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1 | # -*- coding: iso-8859-1 -*- | |||
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2 | ||||
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3 | import curses | |||
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4 | ||||
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5 | import astyle, ipipe | |||
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6 | ||||
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7 | ||||
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8 | _ibrowse_help = """ | |||
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9 | down | |||
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10 | Move the cursor to the next line. | |||
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11 | ||||
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12 | up | |||
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13 | Move the cursor to the previous line. | |||
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14 | ||||
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15 | pagedown | |||
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16 | Move the cursor down one page (minus overlap). | |||
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17 | ||||
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18 | pageup | |||
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19 | Move the cursor up one page (minus overlap). | |||
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20 | ||||
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21 | left | |||
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22 | Move the cursor left. | |||
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23 | ||||
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24 | right | |||
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25 | Move the cursor right. | |||
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26 | ||||
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27 | home | |||
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28 | Move the cursor to the first column. | |||
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29 | ||||
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30 | end | |||
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31 | Move the cursor to the last column. | |||
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32 | ||||
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33 | prevattr | |||
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34 | Move the cursor one attribute column to the left. | |||
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35 | ||||
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36 | nextattr | |||
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37 | Move the cursor one attribute column to the right. | |||
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38 | ||||
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39 | pick | |||
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40 | 'Pick' the object under the cursor (i.e. the row the cursor is on). This | |||
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41 | leaves the browser and returns the picked object to the caller. (In IPython | |||
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42 | this object will be available as the '_' variable.) | |||
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43 | ||||
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44 | pickattr | |||
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45 | 'Pick' the attribute under the cursor (i.e. the row/column the cursor is on). | |||
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46 | ||||
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47 | pickallattrs | |||
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48 | Pick' the complete column under the cursor (i.e. the attribute under the | |||
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49 | cursor) from all currently fetched objects. These attributes will be returned | |||
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50 | as a list. | |||
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51 | ||||
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52 | tooglemark | |||
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53 | Mark/unmark the object under the cursor. Marked objects have a '!' after the | |||
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54 | row number). | |||
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55 | ||||
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56 | pickmarked | |||
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57 | 'Pick' marked objects. Marked objects will be returned as a list. | |||
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58 | ||||
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59 | pickmarkedattr | |||
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60 | 'Pick' the attribute under the cursor from all marked objects (This returns a | |||
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61 | list). | |||
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62 | ||||
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63 | enterdefault | |||
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64 | Enter the object under the cursor. (what this mean depends on the object | |||
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65 | itself (i.e. how it implements the '__xiter__' method). This opens a new | |||
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66 | browser 'level'. | |||
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67 | ||||
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68 | enter | |||
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69 | Enter the object under the cursor. If the object provides different enter | |||
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70 | modes a menu of all modes will be presented; choose one and enter it (via the | |||
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71 | 'enter' or 'enterdefault' command). | |||
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72 | ||||
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73 | enterattr | |||
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74 | Enter the attribute under the cursor. | |||
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75 | ||||
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76 | leave | |||
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77 | Leave the current browser level and go back to the previous one. | |||
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78 | ||||
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79 | detail | |||
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80 | Show a detail view of the object under the cursor. This shows the name, type, | |||
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81 | doc string and value of the object attributes (and it might show more | |||
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82 | attributes than in the list view, depending on the object). | |||
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83 | ||||
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84 | detailattr | |||
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85 | Show a detail view of the attribute under the cursor. | |||
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86 | ||||
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87 | markrange | |||
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88 | Mark all objects from the last marked object before the current cursor | |||
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89 | position to the cursor position. | |||
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90 | ||||
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91 | sortattrasc | |||
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92 | Sort the objects (in ascending order) using the attribute under the cursor as | |||
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93 | the sort key. | |||
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94 | ||||
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95 | sortattrdesc | |||
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96 | Sort the objects (in descending order) using the attribute under the cursor as | |||
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97 | the sort key. | |||
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98 | ||||
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99 | goto | |||
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100 | Jump to a row. The row number can be entered at the bottom of the screen. | |||
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101 | ||||
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102 | find | |||
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103 | Search forward for a row. At the bottom of the screen the condition can be | |||
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104 | entered. | |||
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105 | ||||
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106 | findbackwards | |||
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107 | Search backward for a row. At the bottom of the screen the condition can be | |||
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108 | entered. | |||
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109 | ||||
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110 | help | |||
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111 | This screen. | |||
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112 | """ | |||
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113 | ||||
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114 | ||||
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115 | class UnassignedKeyError(Exception): | |||
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116 | """ | |||
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117 | Exception that is used for reporting unassigned keys. | |||
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118 | """ | |||
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119 | ||||
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120 | ||||
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121 | class UnknownCommandError(Exception): | |||
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122 | """ | |||
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123 | Exception that is used for reporting unknown command (this should never | |||
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124 | happen). | |||
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125 | """ | |||
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126 | ||||
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127 | ||||
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128 | class CommandError(Exception): | |||
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129 | """ | |||
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130 | Exception that is used for reporting that a command can't be executed. | |||
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131 | """ | |||
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132 | ||||
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133 | ||||
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134 | class _BrowserCachedItem(object): | |||
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135 | # This is used internally by ``ibrowse`` to store a item together with its | |||
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136 | # marked status. | |||
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137 | __slots__ = ("item", "marked") | |||
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138 | ||||
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139 | def __init__(self, item): | |||
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140 | self.item = item | |||
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141 | self.marked = False | |||
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142 | ||||
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143 | ||||
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144 | class _BrowserHelp(object): | |||
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145 | style_header = astyle.Style.fromstr("red:blacK") | |||
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146 | # This is used internally by ``ibrowse`` for displaying the help screen. | |||
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147 | def __init__(self, browser): | |||
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148 | self.browser = browser | |||
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149 | ||||
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150 | def __xrepr__(self, mode): | |||
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151 | yield (-1, True) | |||
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152 | if mode == "header" or mode == "footer": | |||
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153 | yield (astyle.style_default, "ibrowse help screen") | |||
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154 | else: | |||
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155 | yield (astyle.style_default, repr(self)) | |||
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156 | ||||
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157 | def __xiter__(self, mode): | |||
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158 | # Get reverse key mapping | |||
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159 | allkeys = {} | |||
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160 | for (key, cmd) in self.browser.keymap.iteritems(): | |||
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161 | allkeys.setdefault(cmd, []).append(key) | |||
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162 | ||||
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163 | fields = ("key", "description") | |||
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164 | ||||
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165 | for (i, command) in enumerate(_ibrowse_help.strip().split("\n\n")): | |||
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166 | if i: | |||
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167 | yield Fields(fields, key="", description="") | |||
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168 | ||||
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169 | (name, description) = command.split("\n", 1) | |||
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170 | keys = allkeys.get(name, []) | |||
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171 | lines = textwrap.wrap(description, 60) | |||
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172 | ||||
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173 | yield Fields(fields, description=astyle.Text((self.style_header, name))) | |||
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174 | for i in xrange(max(len(keys), len(lines))): | |||
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175 | try: | |||
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176 | key = self.browser.keylabel(keys[i]) | |||
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177 | except IndexError: | |||
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178 | key = "" | |||
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179 | try: | |||
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180 | line = lines[i] | |||
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181 | except IndexError: | |||
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182 | line = "" | |||
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183 | yield Fields(fields, key=key, description=line) | |||
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184 | ||||
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185 | ||||
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186 | class _BrowserLevel(object): | |||
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187 | # This is used internally to store the state (iterator, fetch items, | |||
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188 | # position of cursor and screen, etc.) of one browser level | |||
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189 | # An ``ibrowse`` object keeps multiple ``_BrowserLevel`` objects in | |||
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190 | # a stack. | |||
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191 | def __init__(self, browser, input, iterator, mainsizey, *attrs): | |||
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192 | self.browser = browser | |||
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193 | self.input = input | |||
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194 | self.header = [x for x in ipipe.xrepr(input, "header") if not isinstance(x[0], int)] | |||
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195 | # iterator for the input | |||
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196 | self.iterator = iterator | |||
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197 | ||||
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198 | # is the iterator exhausted? | |||
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199 | self.exhausted = False | |||
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200 | ||||
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201 | # attributes to be display (autodetected if empty) | |||
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202 | self.attrs = attrs | |||
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203 | ||||
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204 | # fetched items (+ marked flag) | |||
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205 | self.items = ipipe.deque() | |||
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206 | ||||
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207 | # Number of marked objects | |||
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208 | self.marked = 0 | |||
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209 | ||||
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210 | # Vertical cursor position | |||
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211 | self.cury = 0 | |||
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212 | ||||
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213 | # Horizontal cursor position | |||
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214 | self.curx = 0 | |||
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215 | ||||
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216 | # Index of first data column | |||
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217 | self.datastartx = 0 | |||
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218 | ||||
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219 | # Index of first data line | |||
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220 | self.datastarty = 0 | |||
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221 | ||||
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222 | # height of the data display area | |||
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223 | self.mainsizey = mainsizey | |||
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224 | ||||
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225 | # width of the data display area (changes when scrolling) | |||
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226 | self.mainsizex = 0 | |||
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227 | ||||
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228 | # Size of row number (changes when scrolling) | |||
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229 | self.numbersizex = 0 | |||
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230 | ||||
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231 | # Attribute names to display (in this order) | |||
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232 | self.displayattrs = [] | |||
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233 | ||||
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234 | # index and name of attribute under the cursor | |||
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235 | self.displayattr = (None, ipipe._default) | |||
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236 | ||||
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237 | # Maps attribute names to column widths | |||
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238 | self.colwidths = {} | |||
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239 | ||||
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240 | self.fetch(mainsizey) | |||
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241 | self.calcdisplayattrs() | |||
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242 | # formatted attributes for the items on screen | |||
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243 | # (i.e. self.items[self.datastarty:self.datastarty+self.mainsizey]) | |||
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244 | self.displayrows = [self.getrow(i) for i in xrange(len(self.items))] | |||
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245 | self.calcwidths() | |||
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246 | self.calcdisplayattr() | |||
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247 | ||||
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248 | def fetch(self, count): | |||
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249 | # Try to fill ``self.items`` with at least ``count`` objects. | |||
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250 | have = len(self.items) | |||
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251 | while not self.exhausted and have < count: | |||
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252 | try: | |||
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253 | item = self.iterator.next() | |||
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254 | except StopIteration: | |||
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255 | self.exhausted = True | |||
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256 | break | |||
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257 | else: | |||
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258 | have += 1 | |||
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259 | self.items.append(_BrowserCachedItem(item)) | |||
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260 | ||||
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261 | def calcdisplayattrs(self): | |||
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262 | # Calculate which attributes are available from the objects that are | |||
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263 | # currently visible on screen (and store it in ``self.displayattrs``) | |||
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264 | attrnames = set() | |||
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265 | # If the browser object specifies a fixed list of attributes, | |||
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266 | # simply use it. | |||
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267 | if self.attrs: | |||
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268 | self.displayattrs = self.attrs | |||
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269 | else: | |||
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270 | self.displayattrs = [] | |||
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271 | endy = min(self.datastarty+self.mainsizey, len(self.items)) | |||
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272 | for i in xrange(self.datastarty, endy): | |||
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273 | for attrname in ipipe.xattrs(self.items[i].item, "default"): | |||
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274 | if attrname not in attrnames: | |||
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275 | self.displayattrs.append(attrname) | |||
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276 | attrnames.add(attrname) | |||
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277 | ||||
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278 | def getrow(self, i): | |||
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279 | # Return a dictinary with the attributes for the object | |||
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280 | # ``self.items[i]``. Attribute names are taken from | |||
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281 | # ``self.displayattrs`` so ``calcdisplayattrs()`` must have been | |||
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282 | # called before. | |||
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283 | row = {} | |||
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284 | item = self.items[i].item | |||
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285 | for attrname in self.displayattrs: | |||
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286 | try: | |||
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287 | value = ipipe._getattr(item, attrname, ipipe._default) | |||
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288 | except (KeyboardInterrupt, SystemExit): | |||
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289 | raise | |||
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290 | except Exception, exc: | |||
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291 | value = exc | |||
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292 | # only store attribute if it exists (or we got an exception) | |||
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293 | if value is not ipipe._default: | |||
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294 | parts = [] | |||
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295 | totallength = 0 | |||
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296 | align = None | |||
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297 | full = False | |||
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298 | # Collect parts until we have enough | |||
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299 | for part in ipipe.xrepr(value, "cell"): | |||
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300 | # part gives (alignment, stop) | |||
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301 | # instead of (style, text) | |||
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302 | if isinstance(part[0], int): | |||
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303 | # only consider the first occurence | |||
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304 | if align is None: | |||
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305 | align = part[0] | |||
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306 | full = part[1] | |||
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307 | else: | |||
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308 | parts.append(part) | |||
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309 | totallength += len(part[1]) | |||
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310 | if totallength >= self.browser.maxattrlength and not full: | |||
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311 | parts.append((astyle.style_ellisis, "...")) | |||
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312 | totallength += 3 | |||
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313 | break | |||
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314 | # remember alignment, length and colored parts | |||
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315 | row[attrname] = (align, totallength, parts) | |||
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316 | return row | |||
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317 | ||||
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318 | def calcwidths(self): | |||
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319 | # Recalculate the displayed fields and their width. | |||
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320 | # ``calcdisplayattrs()'' must have been called and the cache | |||
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321 | # for attributes of the objects on screen (``self.displayrows``) | |||
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322 | # must have been filled. This returns a dictionary mapping | |||
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323 | # colmn names to width. | |||
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324 | self.colwidths = {} | |||
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325 | for row in self.displayrows: | |||
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326 | for attrname in self.displayattrs: | |||
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327 | try: | |||
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328 | length = row[attrname][1] | |||
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329 | except KeyError: | |||
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330 | length = 0 | |||
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331 | # always add attribute to colwidths, even if it doesn't exist | |||
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332 | if attrname not in self.colwidths: | |||
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333 | self.colwidths[attrname] = len(ipipe._attrname(attrname)) | |||
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334 | newwidth = max(self.colwidths[attrname], length) | |||
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335 | self.colwidths[attrname] = newwidth | |||
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336 | ||||
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337 | # How many characters do we need to paint the item number? | |||
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338 | self.numbersizex = len(str(self.datastarty+self.mainsizey-1)) | |||
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339 | # How must space have we got to display data? | |||
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340 | self.mainsizex = self.browser.scrsizex-self.numbersizex-3 | |||
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341 | # width of all columns | |||
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342 | self.datasizex = sum(self.colwidths.itervalues()) + len(self.colwidths) | |||
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343 | ||||
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344 | def calcdisplayattr(self): | |||
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345 | # Find out on which attribute the cursor is on and store this | |||
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346 | # information in ``self.displayattr``. | |||
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347 | pos = 0 | |||
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348 | for (i, attrname) in enumerate(self.displayattrs): | |||
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349 | if pos+self.colwidths[attrname] >= self.curx: | |||
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350 | self.displayattr = (i, attrname) | |||
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351 | break | |||
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352 | pos += self.colwidths[attrname]+1 | |||
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353 | else: | |||
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354 | self.displayattr = (None, ipipe._default) | |||
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355 | ||||
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356 | def moveto(self, x, y, refresh=False): | |||
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357 | # Move the cursor to the position ``(x,y)`` (in data coordinates, | |||
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358 | # not in screen coordinates). If ``refresh`` is true, all cached | |||
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359 | # values will be recalculated (e.g. because the list has been | |||
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360 | # resorted, so screen positions etc. are no longer valid). | |||
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361 | olddatastarty = self.datastarty | |||
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362 | oldx = self.curx | |||
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363 | oldy = self.cury | |||
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364 | x = int(x+0.5) | |||
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365 | y = int(y+0.5) | |||
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366 | newx = x # remember where we wanted to move | |||
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367 | newy = y # remember where we wanted to move | |||
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368 | ||||
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369 | scrollbordery = min(self.browser.scrollbordery, self.mainsizey//2) | |||
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370 | scrollborderx = min(self.browser.scrollborderx, self.mainsizex//2) | |||
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371 | ||||
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372 | # Make sure that the cursor didn't leave the main area vertically | |||
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373 | if y < 0: | |||
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374 | y = 0 | |||
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375 | self.fetch(y+scrollbordery+1) # try to get more items | |||
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376 | if y >= len(self.items): | |||
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377 | y = max(0, len(self.items)-1) | |||
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378 | ||||
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379 | # Make sure that the cursor stays on screen vertically | |||
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380 | if y < self.datastarty+scrollbordery: | |||
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381 | self.datastarty = max(0, y-scrollbordery) | |||
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382 | elif y >= self.datastarty+self.mainsizey-scrollbordery: | |||
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383 | self.datastarty = max(0, min(y-self.mainsizey+scrollbordery+1, | |||
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384 | len(self.items)-self.mainsizey)) | |||
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385 | ||||
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386 | if refresh: # Do we need to refresh the complete display? | |||
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387 | self.calcdisplayattrs() | |||
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388 | endy = min(self.datastarty+self.mainsizey, len(self.items)) | |||
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389 | self.displayrows = map(self.getrow, xrange(self.datastarty, endy)) | |||
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390 | self.calcwidths() | |||
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391 | # Did we scroll vertically => update displayrows | |||
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392 | # and various other attributes | |||
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393 | elif self.datastarty != olddatastarty: | |||
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394 | # Recalculate which attributes we have to display | |||
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395 | olddisplayattrs = self.displayattrs | |||
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396 | self.calcdisplayattrs() | |||
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397 | # If there are new attributes, recreate the cache | |||
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398 | if self.displayattrs != olddisplayattrs: | |||
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399 | endy = min(self.datastarty+self.mainsizey, len(self.items)) | |||
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400 | self.displayrows = map(self.getrow, xrange(self.datastarty, endy)) | |||
|
401 | elif self.datastarty<olddatastarty: # we did scroll up | |||
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402 | # drop rows from the end | |||
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403 | del self.displayrows[self.datastarty-olddatastarty:] | |||
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404 | # fetch new items | |||
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405 | for i in xrange(olddatastarty-1, | |||
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406 | self.datastarty-1, -1): | |||
|
407 | try: | |||
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408 | row = self.getrow(i) | |||
|
409 | except IndexError: | |||
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410 | # we didn't have enough objects to fill the screen | |||
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411 | break | |||
|
412 | self.displayrows.insert(0, row) | |||
|
413 | else: # we did scroll down | |||
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414 | # drop rows from the start | |||
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415 | del self.displayrows[:self.datastarty-olddatastarty] | |||
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416 | # fetch new items | |||
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417 | for i in xrange(olddatastarty+self.mainsizey, | |||
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418 | self.datastarty+self.mainsizey): | |||
|
419 | try: | |||
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420 | row = self.getrow(i) | |||
|
421 | except IndexError: | |||
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422 | # we didn't have enough objects to fill the screen | |||
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423 | break | |||
|
424 | self.displayrows.append(row) | |||
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425 | self.calcwidths() | |||
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426 | ||||
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427 | # Make sure that the cursor didn't leave the data area horizontally | |||
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428 | if x < 0: | |||
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429 | x = 0 | |||
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430 | elif x >= self.datasizex: | |||
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431 | x = max(0, self.datasizex-1) | |||
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432 | ||||
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433 | # Make sure that the cursor stays on screen horizontally | |||
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434 | if x < self.datastartx+scrollborderx: | |||
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435 | self.datastartx = max(0, x-scrollborderx) | |||
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436 | elif x >= self.datastartx+self.mainsizex-scrollborderx: | |||
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437 | self.datastartx = max(0, min(x-self.mainsizex+scrollborderx+1, | |||
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438 | self.datasizex-self.mainsizex)) | |||
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439 | ||||
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440 | if x == oldx and y == oldy and (x != newx or y != newy): # couldn't move | |||
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441 | self.browser.beep() | |||
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442 | else: | |||
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443 | self.curx = x | |||
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444 | self.cury = y | |||
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445 | self.calcdisplayattr() | |||
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446 | ||||
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447 | def sort(self, key, reverse=False): | |||
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448 | """ | |||
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449 | Sort the currently list of items using the key function ``key``. If | |||
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450 | ``reverse`` is true the sort order is reversed. | |||
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451 | """ | |||
|
452 | curitem = self.items[self.cury] # Remember where the cursor is now | |||
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453 | ||||
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454 | # Sort items | |||
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455 | def realkey(item): | |||
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456 | return key(item.item) | |||
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457 | self.items = ipipe.deque(sorted(self.items, key=realkey, reverse=reverse)) | |||
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458 | ||||
|
459 | # Find out where the object under the cursor went | |||
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460 | cury = self.cury | |||
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461 | for (i, item) in enumerate(self.items): | |||
|
462 | if item is curitem: | |||
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463 | cury = i | |||
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464 | break | |||
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465 | ||||
|
466 | self.moveto(self.curx, cury, refresh=True) | |||
|
467 | ||||
|
468 | ||||
|
469 | class ibrowse(ipipe.Display): | |||
|
470 | # Show this many lines from the previous screen when paging horizontally | |||
|
471 | pageoverlapx = 1 | |||
|
472 | ||||
|
473 | # Show this many lines from the previous screen when paging vertically | |||
|
474 | pageoverlapy = 1 | |||
|
475 | ||||
|
476 | # Start scrolling when the cursor is less than this number of columns | |||
|
477 | # away from the left or right screen edge | |||
|
478 | scrollborderx = 10 | |||
|
479 | ||||
|
480 | # Start scrolling when the cursor is less than this number of lines | |||
|
481 | # away from the top or bottom screen edge | |||
|
482 | scrollbordery = 5 | |||
|
483 | ||||
|
484 | # Accelerate by this factor when scrolling horizontally | |||
|
485 | acceleratex = 1.05 | |||
|
486 | ||||
|
487 | # Accelerate by this factor when scrolling vertically | |||
|
488 | acceleratey = 1.05 | |||
|
489 | ||||
|
490 | # The maximum horizontal scroll speed | |||
|
491 | # (as a factor of the screen width (i.e. 0.5 == half a screen width) | |||
|
492 | maxspeedx = 0.5 | |||
|
493 | ||||
|
494 | # The maximum vertical scroll speed | |||
|
495 | # (as a factor of the screen height (i.e. 0.5 == half a screen height) | |||
|
496 | maxspeedy = 0.5 | |||
|
497 | ||||
|
498 | # The maximum number of header lines for browser level | |||
|
499 | # if the nesting is deeper, only the innermost levels are displayed | |||
|
500 | maxheaders = 5 | |||
|
501 | ||||
|
502 | # The approximate maximum length of a column entry | |||
|
503 | maxattrlength = 200 | |||
|
504 | ||||
|
505 | # Styles for various parts of the GUI | |||
|
506 | style_objheadertext = astyle.Style.fromstr("white:black:bold|reverse") | |||
|
507 | style_objheadernumber = astyle.Style.fromstr("white:blue:bold|reverse") | |||
|
508 | style_objheaderobject = astyle.Style.fromstr("white:black:reverse") | |||
|
509 | style_colheader = astyle.Style.fromstr("blue:white:reverse") | |||
|
510 | style_colheaderhere = astyle.Style.fromstr("green:black:bold|reverse") | |||
|
511 | style_colheadersep = astyle.Style.fromstr("blue:black:reverse") | |||
|
512 | style_number = astyle.Style.fromstr("blue:white:reverse") | |||
|
513 | style_numberhere = astyle.Style.fromstr("green:black:bold|reverse") | |||
|
514 | style_sep = astyle.Style.fromstr("blue:black") | |||
|
515 | style_data = astyle.Style.fromstr("white:black") | |||
|
516 | style_datapad = astyle.Style.fromstr("blue:black:bold") | |||
|
517 | style_footer = astyle.Style.fromstr("black:white") | |||
|
518 | style_report = astyle.Style.fromstr("white:black") | |||
|
519 | ||||
|
520 | # Column separator in header | |||
|
521 | headersepchar = "|" | |||
|
522 | ||||
|
523 | # Character for padding data cell entries | |||
|
524 | datapadchar = "." | |||
|
525 | ||||
|
526 | # Column separator in data area | |||
|
527 | datasepchar = "|" | |||
|
528 | ||||
|
529 | # Character to use for "empty" cell (i.e. for non-existing attributes) | |||
|
530 | nodatachar = "-" | |||
|
531 | ||||
|
532 | # Prompts for modes that require keyboard input | |||
|
533 | prompts = { | |||
|
534 | "goto": "goto object #: ", | |||
|
535 | "find": "find expression: ", | |||
|
536 | "findbackwards": "find backwards expression: " | |||
|
537 | } | |||
|
538 | ||||
|
539 | # Maps curses key codes to "function" names | |||
|
540 | keymap = { | |||
|
541 | ord("q"): "quit", | |||
|
542 | curses.KEY_UP: "up", | |||
|
543 | curses.KEY_DOWN: "down", | |||
|
544 | curses.KEY_PPAGE: "pageup", | |||
|
545 | curses.KEY_NPAGE: "pagedown", | |||
|
546 | curses.KEY_LEFT: "left", | |||
|
547 | curses.KEY_RIGHT: "right", | |||
|
548 | curses.KEY_HOME: "home", | |||
|
549 | curses.KEY_END: "end", | |||
|
550 | ord("<"): "prevattr", | |||
|
551 | 0x1b: "prevattr", # SHIFT-TAB | |||
|
552 | ord(">"): "nextattr", | |||
|
553 | ord("\t"):"nextattr", # TAB | |||
|
554 | ord("p"): "pick", | |||
|
555 | ord("P"): "pickattr", | |||
|
556 | ord("C"): "pickallattrs", | |||
|
557 | ord("m"): "pickmarked", | |||
|
558 | ord("M"): "pickmarkedattr", | |||
|
559 | ord("\n"): "enterdefault", | |||
|
560 | # FIXME: What's happening here? | |||
|
561 | 8: "leave", | |||
|
562 | 127: "leave", | |||
|
563 | curses.KEY_BACKSPACE: "leave", | |||
|
564 | ord("x"): "leave", | |||
|
565 | ord("h"): "help", | |||
|
566 | ord("e"): "enter", | |||
|
567 | ord("E"): "enterattr", | |||
|
568 | ord("d"): "detail", | |||
|
569 | ord("D"): "detailattr", | |||
|
570 | ord(" "): "tooglemark", | |||
|
571 | ord("r"): "markrange", | |||
|
572 | ord("v"): "sortattrasc", | |||
|
573 | ord("V"): "sortattrdesc", | |||
|
574 | ord("g"): "goto", | |||
|
575 | ord("f"): "find", | |||
|
576 | ord("b"): "findbackwards", | |||
|
577 | } | |||
|
578 | ||||
|
579 | def __init__(self, *attrs): | |||
|
580 | """ | |||
|
581 | Create a new browser. If ``attrs`` is not empty, it is the list | |||
|
582 | of attributes that will be displayed in the browser, otherwise | |||
|
583 | these will be determined by the objects on screen. | |||
|
584 | """ | |||
|
585 | self.attrs = attrs | |||
|
586 | ||||
|
587 | # Stack of browser levels | |||
|
588 | self.levels = [] | |||
|
589 | # how many colums to scroll (Changes when accelerating) | |||
|
590 | self.stepx = 1. | |||
|
591 | ||||
|
592 | # how many rows to scroll (Changes when accelerating) | |||
|
593 | self.stepy = 1. | |||
|
594 | ||||
|
595 | # Beep on the edges of the data area? (Will be set to ``False`` | |||
|
596 | # once the cursor hits the edge of the screen, so we don't get | |||
|
597 | # multiple beeps). | |||
|
598 | self._dobeep = True | |||
|
599 | ||||
|
600 | # Cache for registered ``curses`` colors and styles. | |||
|
601 | self._styles = {} | |||
|
602 | self._colors = {} | |||
|
603 | self._maxcolor = 1 | |||
|
604 | ||||
|
605 | # How many header lines do we want to paint (the numbers of levels | |||
|
606 | # we have, but with an upper bound) | |||
|
607 | self._headerlines = 1 | |||
|
608 | ||||
|
609 | # Index of first header line | |||
|
610 | self._firstheaderline = 0 | |||
|
611 | ||||
|
612 | # curses window | |||
|
613 | self.scr = None | |||
|
614 | # report in the footer line (error, executed command etc.) | |||
|
615 | self._report = None | |||
|
616 | ||||
|
617 | # value to be returned to the caller (set by commands) | |||
|
618 | self.returnvalue = None | |||
|
619 | ||||
|
620 | # The mode the browser is in | |||
|
621 | # e.g. normal browsing or entering an argument for a command | |||
|
622 | self.mode = "default" | |||
|
623 | ||||
|
624 | # The partially entered row number for the goto command | |||
|
625 | self.goto = "" | |||
|
626 | ||||
|
627 | def nextstepx(self, step): | |||
|
628 | """ | |||
|
629 | Accelerate horizontally. | |||
|
630 | """ | |||
|
631 | return max(1., min(step*self.acceleratex, | |||
|
632 | self.maxspeedx*self.levels[-1].mainsizex)) | |||
|
633 | ||||
|
634 | def nextstepy(self, step): | |||
|
635 | """ | |||
|
636 | Accelerate vertically. | |||
|
637 | """ | |||
|
638 | return max(1., min(step*self.acceleratey, | |||
|
639 | self.maxspeedy*self.levels[-1].mainsizey)) | |||
|
640 | ||||
|
641 | def getstyle(self, style): | |||
|
642 | """ | |||
|
643 | Register the ``style`` with ``curses`` or get it from the cache, | |||
|
644 | if it has been registered before. | |||
|
645 | """ | |||
|
646 | try: | |||
|
647 | return self._styles[style.fg, style.bg, style.attrs] | |||
|
648 | except KeyError: | |||
|
649 | attrs = 0 | |||
|
650 | for b in astyle.A2CURSES: | |||
|
651 | if style.attrs & b: | |||
|
652 | attrs |= astyle.A2CURSES[b] | |||
|
653 | try: | |||
|
654 | color = self._colors[style.fg, style.bg] | |||
|
655 | except KeyError: | |||
|
656 | curses.init_pair( | |||
|
657 | self._maxcolor, | |||
|
658 | astyle.COLOR2CURSES[style.fg], | |||
|
659 | astyle.COLOR2CURSES[style.bg] | |||
|
660 | ) | |||
|
661 | color = curses.color_pair(self._maxcolor) | |||
|
662 | self._colors[style.fg, style.bg] = color | |||
|
663 | self._maxcolor += 1 | |||
|
664 | c = color | attrs | |||
|
665 | self._styles[style.fg, style.bg, style.attrs] = c | |||
|
666 | return c | |||
|
667 | ||||
|
668 | def addstr(self, y, x, begx, endx, text, style): | |||
|
669 | """ | |||
|
670 | A version of ``curses.addstr()`` that can handle ``x`` coordinates | |||
|
671 | that are outside the screen. | |||
|
672 | """ | |||
|
673 | text2 = text[max(0, begx-x):max(0, endx-x)] | |||
|
674 | if text2: | |||
|
675 | self.scr.addstr(y, max(x, begx), text2, self.getstyle(style)) | |||
|
676 | return len(text) | |||
|
677 | ||||
|
678 | def addchr(self, y, x, begx, endx, c, l, style): | |||
|
679 | x0 = max(x, begx) | |||
|
680 | x1 = min(x+l, endx) | |||
|
681 | if x1>x0: | |||
|
682 | self.scr.addstr(y, x0, c*(x1-x0), self.getstyle(style)) | |||
|
683 | return l | |||
|
684 | ||||
|
685 | def _calcheaderlines(self, levels): | |||
|
686 | # Calculate how many headerlines do we have to display, if we have | |||
|
687 | # ``levels`` browser levels | |||
|
688 | if levels is None: | |||
|
689 | levels = len(self.levels) | |||
|
690 | self._headerlines = min(self.maxheaders, levels) | |||
|
691 | self._firstheaderline = levels-self._headerlines | |||
|
692 | ||||
|
693 | def getstylehere(self, style): | |||
|
694 | """ | |||
|
695 | Return a style for displaying the original style ``style`` | |||
|
696 | in the row the cursor is on. | |||
|
697 | """ | |||
|
698 | return astyle.Style(style.fg, style.bg, style.attrs | astyle.A_BOLD) | |||
|
699 | ||||
|
700 | def report(self, msg): | |||
|
701 | """ | |||
|
702 | Store the message ``msg`` for display below the footer line. This | |||
|
703 | will be displayed as soon as the screen is redrawn. | |||
|
704 | """ | |||
|
705 | self._report = msg | |||
|
706 | ||||
|
707 | def enter(self, item, mode, *attrs): | |||
|
708 | """ | |||
|
709 | Enter the object ``item`` in the mode ``mode``. If ``attrs`` is | |||
|
710 | specified, it will be used as a fixed list of attributes to display. | |||
|
711 | """ | |||
|
712 | try: | |||
|
713 | iterator = ipipe.xiter(item, mode) | |||
|
714 | except (KeyboardInterrupt, SystemExit): | |||
|
715 | raise | |||
|
716 | except Exception, exc: | |||
|
717 | curses.beep() | |||
|
718 | self.report(exc) | |||
|
719 | else: | |||
|
720 | self._calcheaderlines(len(self.levels)+1) | |||
|
721 | level = _BrowserLevel( | |||
|
722 | self, | |||
|
723 | item, | |||
|
724 | iterator, | |||
|
725 | self.scrsizey-1-self._headerlines-2, | |||
|
726 | *attrs | |||
|
727 | ) | |||
|
728 | self.levels.append(level) | |||
|
729 | ||||
|
730 | def startkeyboardinput(self, mode): | |||
|
731 | """ | |||
|
732 | Enter mode ``mode``, which requires keyboard input. | |||
|
733 | """ | |||
|
734 | self.mode = mode | |||
|
735 | self.keyboardinput = "" | |||
|
736 | self.cursorpos = 0 | |||
|
737 | ||||
|
738 | def executekeyboardinput(self, mode): | |||
|
739 | exe = getattr(self, "exe_%s" % mode, None) | |||
|
740 | if exe is not None: | |||
|
741 | exe() | |||
|
742 | self.mode = "default" | |||
|
743 | ||||
|
744 | def keylabel(self, keycode): | |||
|
745 | """ | |||
|
746 | Return a pretty name for the ``curses`` key ``keycode`` (used in the | |||
|
747 | help screen and in reports about unassigned keys). | |||
|
748 | """ | |||
|
749 | if keycode <= 0xff: | |||
|
750 | specialsnames = { | |||
|
751 | ord("\n"): "RETURN", | |||
|
752 | ord(" "): "SPACE", | |||
|
753 | ord("\t"): "TAB", | |||
|
754 | ord("\x7f"): "DELETE", | |||
|
755 | ord("\x08"): "BACKSPACE", | |||
|
756 | } | |||
|
757 | if keycode in specialsnames: | |||
|
758 | return specialsnames[keycode] | |||
|
759 | return repr(chr(keycode)) | |||
|
760 | for name in dir(curses): | |||
|
761 | if name.startswith("KEY_") and getattr(curses, name) == keycode: | |||
|
762 | return name | |||
|
763 | return str(keycode) | |||
|
764 | ||||
|
765 | def beep(self, force=False): | |||
|
766 | if force or self._dobeep: | |||
|
767 | curses.beep() | |||
|
768 | # don't beep again (as long as the same key is pressed) | |||
|
769 | self._dobeep = False | |||
|
770 | ||||
|
771 | def cmd_quit(self): | |||
|
772 | self.returnvalue = None | |||
|
773 | return True | |||
|
774 | ||||
|
775 | def cmd_up(self): | |||
|
776 | level = self.levels[-1] | |||
|
777 | self.report("up") | |||
|
778 | level.moveto(level.curx, level.cury-self.stepy) | |||
|
779 | ||||
|
780 | def cmd_down(self): | |||
|
781 | level = self.levels[-1] | |||
|
782 | self.report("down") | |||
|
783 | level.moveto(level.curx, level.cury+self.stepy) | |||
|
784 | ||||
|
785 | def cmd_pageup(self): | |||
|
786 | level = self.levels[-1] | |||
|
787 | self.report("page up") | |||
|
788 | level.moveto(level.curx, level.cury-level.mainsizey+self.pageoverlapy) | |||
|
789 | ||||
|
790 | def cmd_pagedown(self): | |||
|
791 | level = self.levels[-1] | |||
|
792 | self.report("page down") | |||
|
793 | level.moveto(level.curx, level.cury+level.mainsizey-self.pageoverlapy) | |||
|
794 | ||||
|
795 | def cmd_left(self): | |||
|
796 | level = self.levels[-1] | |||
|
797 | self.report("left") | |||
|
798 | level.moveto(level.curx-self.stepx, level.cury) | |||
|
799 | ||||
|
800 | def cmd_right(self): | |||
|
801 | level = self.levels[-1] | |||
|
802 | self.report("right") | |||
|
803 | level.moveto(level.curx+self.stepx, level.cury) | |||
|
804 | ||||
|
805 | def cmd_home(self): | |||
|
806 | level = self.levels[-1] | |||
|
807 | self.report("home") | |||
|
808 | level.moveto(0, level.cury) | |||
|
809 | ||||
|
810 | def cmd_end(self): | |||
|
811 | level = self.levels[-1] | |||
|
812 | self.report("end") | |||
|
813 | level.moveto(level.datasizex+level.mainsizey-self.pageoverlapx, level.cury) | |||
|
814 | ||||
|
815 | def cmd_prevattr(self): | |||
|
816 | level = self.levels[-1] | |||
|
817 | if level.displayattr[0] is None or level.displayattr[0] == 0: | |||
|
818 | self.beep() | |||
|
819 | else: | |||
|
820 | self.report("prevattr") | |||
|
821 | pos = 0 | |||
|
822 | for (i, attrname) in enumerate(level.displayattrs): | |||
|
823 | if i == level.displayattr[0]-1: | |||
|
824 | break | |||
|
825 | pos += level.colwidths[attrname] + 1 | |||
|
826 | level.moveto(pos, level.cury) | |||
|
827 | ||||
|
828 | def cmd_nextattr(self): | |||
|
829 | level = self.levels[-1] | |||
|
830 | if level.displayattr[0] is None or level.displayattr[0] == len(level.displayattrs)-1: | |||
|
831 | self.beep() | |||
|
832 | else: | |||
|
833 | self.report("nextattr") | |||
|
834 | pos = 0 | |||
|
835 | for (i, attrname) in enumerate(level.displayattrs): | |||
|
836 | if i == level.displayattr[0]+1: | |||
|
837 | break | |||
|
838 | pos += level.colwidths[attrname] + 1 | |||
|
839 | level.moveto(pos, level.cury) | |||
|
840 | ||||
|
841 | def cmd_pick(self): | |||
|
842 | level = self.levels[-1] | |||
|
843 | self.returnvalue = level.items[level.cury].item | |||
|
844 | return True | |||
|
845 | ||||
|
846 | def cmd_pickattr(self): | |||
|
847 | level = self.levels[-1] | |||
|
848 | attrname = level.displayattr[1] | |||
|
849 | if attrname is ipipe._default: | |||
|
850 | curses.beep() | |||
|
851 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
852 | return | |||
|
853 | attr = ipipe._getattr(level.items[level.cury].item, attrname) | |||
|
854 | if attr is ipipe._default: | |||
|
855 | curses.beep() | |||
|
856 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
857 | else: | |||
|
858 | self.returnvalue = attr | |||
|
859 | return True | |||
|
860 | ||||
|
861 | def cmd_pickallattrs(self): | |||
|
862 | level = self.levels[-1] | |||
|
863 | attrname = level.displayattr[1] | |||
|
864 | if attrname is ipipe._default: | |||
|
865 | curses.beep() | |||
|
866 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
867 | return | |||
|
868 | result = [] | |||
|
869 | for cache in level.items: | |||
|
870 | attr = ipipe._getattr(cache.item, attrname) | |||
|
871 | if attr is not ipipe._default: | |||
|
872 | result.append(attr) | |||
|
873 | self.returnvalue = result | |||
|
874 | return True | |||
|
875 | ||||
|
876 | def cmd_pickmarked(self): | |||
|
877 | level = self.levels[-1] | |||
|
878 | self.returnvalue = [cache.item for cache in level.items if cache.marked] | |||
|
879 | return True | |||
|
880 | ||||
|
881 | def cmd_pickmarkedattr(self): | |||
|
882 | level = self.levels[-1] | |||
|
883 | attrname = level.displayattr[1] | |||
|
884 | if attrname is ipipe._default: | |||
|
885 | curses.beep() | |||
|
886 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
887 | return | |||
|
888 | result = [] | |||
|
889 | for cache in level.items: | |||
|
890 | if cache.marked: | |||
|
891 | attr = ipipe._getattr(cache.item, attrname) | |||
|
892 | if attr is not ipipe._default: | |||
|
893 | result.append(attr) | |||
|
894 | self.returnvalue = result | |||
|
895 | return True | |||
|
896 | ||||
|
897 | def cmd_markrange(self): | |||
|
898 | level = self.levels[-1] | |||
|
899 | self.report("markrange") | |||
|
900 | start = None | |||
|
901 | if level.items: | |||
|
902 | for i in xrange(level.cury, -1, -1): | |||
|
903 | if level.items[i].marked: | |||
|
904 | start = i | |||
|
905 | break | |||
|
906 | if start is None: | |||
|
907 | self.report(CommandError("no mark before cursor")) | |||
|
908 | curses.beep() | |||
|
909 | else: | |||
|
910 | for i in xrange(start, level.cury+1): | |||
|
911 | cache = level.items[i] | |||
|
912 | if not cache.marked: | |||
|
913 | cache.marked = True | |||
|
914 | level.marked += 1 | |||
|
915 | ||||
|
916 | def cmd_enterdefault(self): | |||
|
917 | level = self.levels[-1] | |||
|
918 | try: | |||
|
919 | item = level.items[level.cury].item | |||
|
920 | except IndexError: | |||
|
921 | self.report(CommandError("No object")) | |||
|
922 | curses.beep() | |||
|
923 | else: | |||
|
924 | self.report("entering object (default mode)...") | |||
|
925 | self.enter(item, "default") | |||
|
926 | ||||
|
927 | def cmd_leave(self): | |||
|
928 | self.report("leave") | |||
|
929 | if len(self.levels) > 1: | |||
|
930 | self._calcheaderlines(len(self.levels)-1) | |||
|
931 | self.levels.pop(-1) | |||
|
932 | else: | |||
|
933 | self.report(CommandError("This is the last level")) | |||
|
934 | curses.beep() | |||
|
935 | ||||
|
936 | def cmd_enter(self): | |||
|
937 | level = self.levels[-1] | |||
|
938 | try: | |||
|
939 | item = level.items[level.cury].item | |||
|
940 | except IndexError: | |||
|
941 | self.report(CommandError("No object")) | |||
|
942 | curses.beep() | |||
|
943 | else: | |||
|
944 | self.report("entering object...") | |||
|
945 | self.enter(item, None) | |||
|
946 | ||||
|
947 | def cmd_enterattr(self): | |||
|
948 | level = self.levels[-1] | |||
|
949 | attrname = level.displayattr[1] | |||
|
950 | if attrname is ipipe._default: | |||
|
951 | curses.beep() | |||
|
952 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
953 | return | |||
|
954 | try: | |||
|
955 | item = level.items[level.cury].item | |||
|
956 | except IndexError: | |||
|
957 | self.report(CommandError("No object")) | |||
|
958 | curses.beep() | |||
|
959 | else: | |||
|
960 | attr = ipipe._getattr(item, attrname) | |||
|
961 | if attr is ipipe._default: | |||
|
962 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
963 | else: | |||
|
964 | self.report("entering object attribute %s..." % ipipe._attrname(attrname)) | |||
|
965 | self.enter(attr, None) | |||
|
966 | ||||
|
967 | def cmd_detail(self): | |||
|
968 | level = self.levels[-1] | |||
|
969 | try: | |||
|
970 | item = level.items[level.cury].item | |||
|
971 | except IndexError: | |||
|
972 | self.report(CommandError("No object")) | |||
|
973 | curses.beep() | |||
|
974 | else: | |||
|
975 | self.report("entering detail view for object...") | |||
|
976 | self.enter(item, "detail") | |||
|
977 | ||||
|
978 | def cmd_detailattr(self): | |||
|
979 | level = self.levels[-1] | |||
|
980 | attrname = level.displayattr[1] | |||
|
981 | if attrname is ipipe._default: | |||
|
982 | curses.beep() | |||
|
983 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
984 | return | |||
|
985 | try: | |||
|
986 | item = level.items[level.cury].item | |||
|
987 | except IndexError: | |||
|
988 | self.report(CommandError("No object")) | |||
|
989 | curses.beep() | |||
|
990 | else: | |||
|
991 | attr = ipipe._getattr(item, attrname) | |||
|
992 | if attr is ipipe._default: | |||
|
993 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
994 | else: | |||
|
995 | self.report("entering detail view for attribute...") | |||
|
996 | self.enter(attr, "detail") | |||
|
997 | ||||
|
998 | def cmd_tooglemark(self): | |||
|
999 | level = self.levels[-1] | |||
|
1000 | self.report("toggle mark") | |||
|
1001 | try: | |||
|
1002 | item = level.items[level.cury] | |||
|
1003 | except IndexError: # no items? | |||
|
1004 | pass | |||
|
1005 | else: | |||
|
1006 | if item.marked: | |||
|
1007 | item.marked = False | |||
|
1008 | level.marked -= 1 | |||
|
1009 | else: | |||
|
1010 | item.marked = True | |||
|
1011 | level.marked += 1 | |||
|
1012 | ||||
|
1013 | def cmd_sortattrasc(self): | |||
|
1014 | level = self.levels[-1] | |||
|
1015 | attrname = level.displayattr[1] | |||
|
1016 | if attrname is ipipe._default: | |||
|
1017 | curses.beep() | |||
|
1018 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
1019 | return | |||
|
1020 | self.report("sort by %s (ascending)" % ipipe._attrname(attrname)) | |||
|
1021 | def key(item): | |||
|
1022 | try: | |||
|
1023 | return ipipe._getattr(item, attrname, None) | |||
|
1024 | except (KeyboardInterrupt, SystemExit): | |||
|
1025 | raise | |||
|
1026 | except Exception: | |||
|
1027 | return None | |||
|
1028 | level.sort(key) | |||
|
1029 | ||||
|
1030 | def cmd_sortattrdesc(self): | |||
|
1031 | level = self.levels[-1] | |||
|
1032 | attrname = level.displayattr[1] | |||
|
1033 | if attrname is ipipe._default: | |||
|
1034 | curses.beep() | |||
|
1035 | self.report(AttributeError(ipipe._attrname(attrname))) | |||
|
1036 | return | |||
|
1037 | self.report("sort by %s (descending)" % ipipe._attrname(attrname)) | |||
|
1038 | def key(item): | |||
|
1039 | try: | |||
|
1040 | return ipipe._getattr(item, attrname, None) | |||
|
1041 | except (KeyboardInterrupt, SystemExit): | |||
|
1042 | raise | |||
|
1043 | except Exception: | |||
|
1044 | return None | |||
|
1045 | level.sort(key, reverse=True) | |||
|
1046 | ||||
|
1047 | def cmd_goto(self): | |||
|
1048 | self.startkeyboardinput("goto") | |||
|
1049 | ||||
|
1050 | def exe_goto(self): | |||
|
1051 | level = self.levels[-1] | |||
|
1052 | if self.keyboardinput: | |||
|
1053 | level.moveto(level.curx, int(self.keyboardinput)) | |||
|
1054 | ||||
|
1055 | def cmd_find(self): | |||
|
1056 | self.startkeyboardinput("find") | |||
|
1057 | ||||
|
1058 | def exe_find(self): | |||
|
1059 | level = self.levels[-1] | |||
|
1060 | if self.keyboardinput: | |||
|
1061 | while True: | |||
|
1062 | cury = level.cury | |||
|
1063 | level.moveto(level.curx, cury+1) | |||
|
1064 | if cury == level.cury: | |||
|
1065 | curses.beep() | |||
|
1066 | break | |||
|
1067 | item = level.items[level.cury].item | |||
|
1068 | try: | |||
|
1069 | if eval(self.keyboardinput, globals(), ipipe.AttrNamespace(item)): | |||
|
1070 | break | |||
|
1071 | except (KeyboardInterrupt, SystemExit): | |||
|
1072 | raise | |||
|
1073 | except Exception, exc: | |||
|
1074 | self.report(exc) | |||
|
1075 | curses.beep() | |||
|
1076 | break # break on error | |||
|
1077 | ||||
|
1078 | def cmd_findbackwards(self): | |||
|
1079 | self.startkeyboardinput("findbackwards") | |||
|
1080 | ||||
|
1081 | def exe_findbackwards(self): | |||
|
1082 | level = self.levels[-1] | |||
|
1083 | if self.keyboardinput: | |||
|
1084 | while level.cury: | |||
|
1085 | level.moveto(level.curx, level.cury-1) | |||
|
1086 | item = level.items[level.cury].item | |||
|
1087 | try: | |||
|
1088 | if eval(self.keyboardinput, globals(), ipipe.AttrNamespace(item)): | |||
|
1089 | break | |||
|
1090 | except (KeyboardInterrupt, SystemExit): | |||
|
1091 | raise | |||
|
1092 | except Exception, exc: | |||
|
1093 | self.report(exc) | |||
|
1094 | curses.beep() | |||
|
1095 | break # break on error | |||
|
1096 | else: | |||
|
1097 | curses.beep() | |||
|
1098 | ||||
|
1099 | def cmd_help(self): | |||
|
1100 | """ | |||
|
1101 | The help command | |||
|
1102 | """ | |||
|
1103 | for level in self.levels: | |||
|
1104 | if isinstance(level.input, _BrowserHelp): | |||
|
1105 | curses.beep() | |||
|
1106 | self.report(CommandError("help already active")) | |||
|
1107 | return | |||
|
1108 | ||||
|
1109 | self.enter(_BrowserHelp(self), "default") | |||
|
1110 | ||||
|
1111 | def _dodisplay(self, scr): | |||
|
1112 | """ | |||
|
1113 | This method is the workhorse of the browser. It handles screen | |||
|
1114 | drawing and the keyboard. | |||
|
1115 | """ | |||
|
1116 | self.scr = scr | |||
|
1117 | curses.halfdelay(1) | |||
|
1118 | footery = 2 | |||
|
1119 | ||||
|
1120 | keys = [] | |||
|
1121 | for (key, cmd) in self.keymap.iteritems(): | |||
|
1122 | if cmd == "quit": | |||
|
1123 | keys.append("%s=%s" % (self.keylabel(key), cmd)) | |||
|
1124 | for (key, cmd) in self.keymap.iteritems(): | |||
|
1125 | if cmd == "help": | |||
|
1126 | keys.append("%s=%s" % (self.keylabel(key), cmd)) | |||
|
1127 | helpmsg = " | %s" % " ".join(keys) | |||
|
1128 | ||||
|
1129 | scr.clear() | |||
|
1130 | msg = "Fetching first batch of objects..." | |||
|
1131 | (self.scrsizey, self.scrsizex) = scr.getmaxyx() | |||
|
1132 | scr.addstr(self.scrsizey//2, (self.scrsizex-len(msg))//2, msg) | |||
|
1133 | scr.refresh() | |||
|
1134 | ||||
|
1135 | lastc = -1 | |||
|
1136 | ||||
|
1137 | self.levels = [] | |||
|
1138 | # enter the first level | |||
|
1139 | self.enter(self.input, ipipe.xiter(self.input, "default"), *self.attrs) | |||
|
1140 | ||||
|
1141 | self._calcheaderlines(None) | |||
|
1142 | ||||
|
1143 | while True: | |||
|
1144 | level = self.levels[-1] | |||
|
1145 | (self.scrsizey, self.scrsizex) = scr.getmaxyx() | |||
|
1146 | level.mainsizey = self.scrsizey-1-self._headerlines-footery | |||
|
1147 | ||||
|
1148 | # Paint object header | |||
|
1149 | for i in xrange(self._firstheaderline, self._firstheaderline+self._headerlines): | |||
|
1150 | lv = self.levels[i] | |||
|
1151 | posx = 0 | |||
|
1152 | posy = i-self._firstheaderline | |||
|
1153 | endx = self.scrsizex | |||
|
1154 | if i: # not the first level | |||
|
1155 | msg = " (%d/%d" % (self.levels[i-1].cury, len(self.levels[i-1].items)) | |||
|
1156 | if not self.levels[i-1].exhausted: | |||
|
1157 | msg += "+" | |||
|
1158 | msg += ") " | |||
|
1159 | endx -= len(msg)+1 | |||
|
1160 | posx += self.addstr(posy, posx, 0, endx, " ibrowse #%d: " % i, self.style_objheadertext) | |||
|
1161 | for (style, text) in lv.header: | |||
|
1162 | posx += self.addstr(posy, posx, 0, endx, text, self.style_objheaderobject) | |||
|
1163 | if posx >= endx: | |||
|
1164 | break | |||
|
1165 | if i: | |||
|
1166 | posx += self.addstr(posy, posx, 0, self.scrsizex, msg, self.style_objheadernumber) | |||
|
1167 | posx += self.addchr(posy, posx, 0, self.scrsizex, " ", self.scrsizex-posx, self.style_objheadernumber) | |||
|
1168 | ||||
|
1169 | if not level.items: | |||
|
1170 | self.addchr(self._headerlines, 0, 0, self.scrsizex, " ", self.scrsizex, self.style_colheader) | |||
|
1171 | self.addstr(self._headerlines+1, 0, 0, self.scrsizex, " <empty>", astyle.style_error) | |||
|
1172 | scr.clrtobot() | |||
|
1173 | else: | |||
|
1174 | # Paint column headers | |||
|
1175 | scr.move(self._headerlines, 0) | |||
|
1176 | scr.addstr(" %*s " % (level.numbersizex, "#"), self.getstyle(self.style_colheader)) | |||
|
1177 | scr.addstr(self.headersepchar, self.getstyle(self.style_colheadersep)) | |||
|
1178 | begx = level.numbersizex+3 | |||
|
1179 | posx = begx-level.datastartx | |||
|
1180 | for attrname in level.displayattrs: | |||
|
1181 | strattrname = ipipe._attrname(attrname) | |||
|
1182 | cwidth = level.colwidths[attrname] | |||
|
1183 | header = strattrname.ljust(cwidth) | |||
|
1184 | if attrname == level.displayattr[1]: | |||
|
1185 | style = self.style_colheaderhere | |||
|
1186 | else: | |||
|
1187 | style = self.style_colheader | |||
|
1188 | posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, header, style) | |||
|
1189 | posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, self.headersepchar, self.style_colheadersep) | |||
|
1190 | if posx >= self.scrsizex: | |||
|
1191 | break | |||
|
1192 | else: | |||
|
1193 | scr.addstr(" "*(self.scrsizex-posx), self.getstyle(self.style_colheader)) | |||
|
1194 | ||||
|
1195 | # Paint rows | |||
|
1196 | posy = self._headerlines+1+level.datastarty | |||
|
1197 | for i in xrange(level.datastarty, min(level.datastarty+level.mainsizey, len(level.items))): | |||
|
1198 | cache = level.items[i] | |||
|
1199 | if i == level.cury: | |||
|
1200 | style = self.style_numberhere | |||
|
1201 | else: | |||
|
1202 | style = self.style_number | |||
|
1203 | ||||
|
1204 | posy = self._headerlines+1+i-level.datastarty | |||
|
1205 | posx = begx-level.datastartx | |||
|
1206 | ||||
|
1207 | scr.move(posy, 0) | |||
|
1208 | scr.addstr(" %*d%s" % (level.numbersizex, i, " !"[cache.marked]), self.getstyle(style)) | |||
|
1209 | scr.addstr(self.headersepchar, self.getstyle(self.style_sep)) | |||
|
1210 | ||||
|
1211 | for attrname in level.displayattrs: | |||
|
1212 | cwidth = level.colwidths[attrname] | |||
|
1213 | try: | |||
|
1214 | (align, length, parts) = level.displayrows[i-level.datastarty][attrname] | |||
|
1215 | except KeyError: | |||
|
1216 | align = 2 | |||
|
1217 | style = astyle.style_nodata | |||
|
1218 | padstyle = self.style_datapad | |||
|
1219 | sepstyle = self.style_sep | |||
|
1220 | if i == level.cury: | |||
|
1221 | padstyle = self.getstylehere(padstyle) | |||
|
1222 | sepstyle = self.getstylehere(sepstyle) | |||
|
1223 | if align == 2: | |||
|
1224 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.nodatachar, cwidth, style) | |||
|
1225 | else: | |||
|
1226 | if align == 1: | |||
|
1227 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle) | |||
|
1228 | elif align == 0: | |||
|
1229 | pad1 = (cwidth-length)//2 | |||
|
1230 | pad2 = cwidth-length-len(pad1) | |||
|
1231 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad1, padstyle) | |||
|
1232 | for (style, text) in parts: | |||
|
1233 | if i == level.cury: | |||
|
1234 | style = self.getstylehere(style) | |||
|
1235 | posx += self.addstr(posy, posx, begx, self.scrsizex, text, style) | |||
|
1236 | if posx >= self.scrsizex: | |||
|
1237 | break | |||
|
1238 | if align == -1: | |||
|
1239 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle) | |||
|
1240 | elif align == 0: | |||
|
1241 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad2, padstyle) | |||
|
1242 | posx += self.addstr(posy, posx, begx, self.scrsizex, self.datasepchar, sepstyle) | |||
|
1243 | else: | |||
|
1244 | scr.clrtoeol() | |||
|
1245 | ||||
|
1246 | # Add blank row headers for the rest of the screen | |||
|
1247 | for posy in xrange(posy+1, self.scrsizey-2): | |||
|
1248 | scr.addstr(posy, 0, " " * (level.numbersizex+2), self.getstyle(self.style_colheader)) | |||
|
1249 | scr.clrtoeol() | |||
|
1250 | ||||
|
1251 | posy = self.scrsizey-footery | |||
|
1252 | # Display footer | |||
|
1253 | scr.addstr(posy, 0, " "*self.scrsizex, self.getstyle(self.style_footer)) | |||
|
1254 | ||||
|
1255 | if level.exhausted: | |||
|
1256 | flag = "" | |||
|
1257 | else: | |||
|
1258 | flag = "+" | |||
|
1259 | ||||
|
1260 | endx = self.scrsizex-len(helpmsg)-1 | |||
|
1261 | scr.addstr(posy, endx, helpmsg, self.getstyle(self.style_footer)) | |||
|
1262 | ||||
|
1263 | posx = 0 | |||
|
1264 | msg = " %d%s objects (%d marked): " % (len(level.items), flag, level.marked) | |||
|
1265 | posx += self.addstr(posy, posx, 0, endx, msg, self.style_footer) | |||
|
1266 | try: | |||
|
1267 | item = level.items[level.cury].item | |||
|
1268 | except IndexError: # empty | |||
|
1269 | pass | |||
|
1270 | else: | |||
|
1271 | for (nostyle, text) in ipipe.xrepr(item, "footer"): | |||
|
1272 | if not isinstance(nostyle, int): | |||
|
1273 | posx += self.addstr(posy, posx, 0, endx, text, self.style_footer) | |||
|
1274 | if posx >= endx: | |||
|
1275 | break | |||
|
1276 | ||||
|
1277 | attrstyle = [(astyle.style_default, "no attribute")] | |||
|
1278 | attrname = level.displayattr[1] | |||
|
1279 | if attrname is not ipipe._default and attrname is not None: | |||
|
1280 | posx += self.addstr(posy, posx, 0, endx, " | ", self.style_footer) | |||
|
1281 | posx += self.addstr(posy, posx, 0, endx, ipipe._attrname(attrname), self.style_footer) | |||
|
1282 | posx += self.addstr(posy, posx, 0, endx, ": ", self.style_footer) | |||
|
1283 | try: | |||
|
1284 | attr = ipipe._getattr(item, attrname) | |||
|
1285 | except (SystemExit, KeyboardInterrupt): | |||
|
1286 | raise | |||
|
1287 | except Exception, exc: | |||
|
1288 | attr = exc | |||
|
1289 | if attr is not ipipe._default: | |||
|
1290 | attrstyle = ipipe.xrepr(attr, "footer") | |||
|
1291 | for (nostyle, text) in attrstyle: | |||
|
1292 | if not isinstance(nostyle, int): | |||
|
1293 | posx += self.addstr(posy, posx, 0, endx, text, self.style_footer) | |||
|
1294 | if posx >= endx: | |||
|
1295 | break | |||
|
1296 | ||||
|
1297 | try: | |||
|
1298 | # Display input prompt | |||
|
1299 | if self.mode in self.prompts: | |||
|
1300 | scr.addstr(self.scrsizey-1, 0, | |||
|
1301 | self.prompts[self.mode] + self.keyboardinput, | |||
|
1302 | self.getstyle(astyle.style_default)) | |||
|
1303 | # Display report | |||
|
1304 | else: | |||
|
1305 | if self._report is not None: | |||
|
1306 | if isinstance(self._report, Exception): | |||
|
1307 | style = self.getstyle(astyle.style_error) | |||
|
1308 | if self._report.__class__.__module__ == "exceptions": | |||
|
1309 | msg = "%s: %s" % \ | |||
|
1310 | (self._report.__class__.__name__, self._report) | |||
|
1311 | else: | |||
|
1312 | msg = "%s.%s: %s" % \ | |||
|
1313 | (self._report.__class__.__module__, | |||
|
1314 | self._report.__class__.__name__, self._report) | |||
|
1315 | else: | |||
|
1316 | style = self.getstyle(self.style_report) | |||
|
1317 | msg = self._report | |||
|
1318 | scr.addstr(self.scrsizey-1, 0, msg[:self.scrsizex], style) | |||
|
1319 | self._report = None | |||
|
1320 | else: | |||
|
1321 | scr.move(self.scrsizey-1, 0) | |||
|
1322 | except curses.error: | |||
|
1323 | # Protect against error from writing to the last line | |||
|
1324 | pass | |||
|
1325 | scr.clrtoeol() | |||
|
1326 | ||||
|
1327 | # Position cursor | |||
|
1328 | if self.mode in self.prompts: | |||
|
1329 | scr.move(self.scrsizey-1, len(self.prompts[self.mode])+self.cursorpos) | |||
|
1330 | else: | |||
|
1331 | scr.move( | |||
|
1332 | 1+self._headerlines+level.cury-level.datastarty, | |||
|
1333 | level.numbersizex+3+level.curx-level.datastartx | |||
|
1334 | ) | |||
|
1335 | scr.refresh() | |||
|
1336 | ||||
|
1337 | # Check keyboard | |||
|
1338 | while True: | |||
|
1339 | c = scr.getch() | |||
|
1340 | if self.mode in self.prompts: | |||
|
1341 | if c in (8, 127, curses.KEY_BACKSPACE): | |||
|
1342 | if self.cursorpos: | |||
|
1343 | self.keyboardinput = self.keyboardinput[:self.cursorpos-1] + self.keyboardinput[self.cursorpos:] | |||
|
1344 | self.cursorpos -= 1 | |||
|
1345 | break | |||
|
1346 | else: | |||
|
1347 | curses.beep() | |||
|
1348 | elif c == curses.KEY_LEFT: | |||
|
1349 | if self.cursorpos: | |||
|
1350 | self.cursorpos -= 1 | |||
|
1351 | break | |||
|
1352 | else: | |||
|
1353 | curses.beep() | |||
|
1354 | elif c == curses.KEY_RIGHT: | |||
|
1355 | if self.cursorpos < len(self.keyboardinput): | |||
|
1356 | self.cursorpos += 1 | |||
|
1357 | break | |||
|
1358 | else: | |||
|
1359 | curses.beep() | |||
|
1360 | elif c in (curses.KEY_UP, curses.KEY_DOWN): # cancel | |||
|
1361 | self.mode = "default" | |||
|
1362 | break | |||
|
1363 | elif c == ord("\n"): | |||
|
1364 | self.executekeyboardinput(self.mode) | |||
|
1365 | break | |||
|
1366 | elif c != -1: | |||
|
1367 | try: | |||
|
1368 | c = chr(c) | |||
|
1369 | except ValueError: | |||
|
1370 | curses.beep() | |||
|
1371 | else: | |||
|
1372 | if (self.mode == "goto" and not "0" <= c <= "9"): | |||
|
1373 | curses.beep() | |||
|
1374 | else: | |||
|
1375 | self.keyboardinput = self.keyboardinput[:self.cursorpos] + c + self.keyboardinput[self.cursorpos:] | |||
|
1376 | self.cursorpos += 1 | |||
|
1377 | break # Redisplay | |||
|
1378 | else: | |||
|
1379 | # if no key is pressed slow down and beep again | |||
|
1380 | if c == -1: | |||
|
1381 | self.stepx = 1. | |||
|
1382 | self.stepy = 1. | |||
|
1383 | self._dobeep = True | |||
|
1384 | else: | |||
|
1385 | # if a different key was pressed slow down and beep too | |||
|
1386 | if c != lastc: | |||
|
1387 | lastc = c | |||
|
1388 | self.stepx = 1. | |||
|
1389 | self.stepy = 1. | |||
|
1390 | self._dobeep = True | |||
|
1391 | cmdname = self.keymap.get(c, None) | |||
|
1392 | if cmdname is None: | |||
|
1393 | self.report( | |||
|
1394 | UnassignedKeyError("Unassigned key %s" % | |||
|
1395 | self.keylabel(c))) | |||
|
1396 | else: | |||
|
1397 | cmdfunc = getattr(self, "cmd_%s" % cmdname, None) | |||
|
1398 | if cmdfunc is None: | |||
|
1399 | self.report( | |||
|
1400 | UnknownCommandError("Unknown command %r" % | |||
|
1401 | (cmdname,))) | |||
|
1402 | elif cmdfunc(): | |||
|
1403 | returnvalue = self.returnvalue | |||
|
1404 | self.returnvalue = None | |||
|
1405 | return returnvalue | |||
|
1406 | self.stepx = self.nextstepx(self.stepx) | |||
|
1407 | self.stepy = self.nextstepy(self.stepy) | |||
|
1408 | curses.flushinp() # get rid of type ahead | |||
|
1409 | break # Redisplay | |||
|
1410 | self.scr = None | |||
|
1411 | ||||
|
1412 | def display(self): | |||
|
1413 | return curses.wrapper(self._dodisplay) |
This diff has been collapsed as it changes many lines, (1432 lines changed) Show them Hide them | |||||
@@ -152,11 +152,6 b' try:' | |||||
152 | except ImportError: |
|
152 | except ImportError: | |
153 | grp = None |
|
153 | grp = None | |
154 |
|
154 | |||
155 | try: |
|
|||
156 | import curses |
|
|||
157 | except ImportError: |
|
|||
158 | curses = None |
|
|||
159 |
|
||||
160 | import path |
|
155 | import path | |
161 | try: |
|
156 | try: | |
162 | from IPython import genutils |
|
157 | from IPython import genutils | |
@@ -176,10 +171,10 b' __all__ = [' | |||||
176 | os.stat_float_times(True) # enable microseconds |
|
171 | os.stat_float_times(True) # enable microseconds | |
177 |
|
172 | |||
178 |
|
173 | |||
179 |
class |
|
174 | class AttrNamespace(object): | |
180 | """ |
|
175 | """ | |
181 |
|
|
176 | Helper class that is used for providing a namespace for evaluating | |
182 | expressions containg attribute names of an object. |
|
177 | expressions containing attribute names of an object. | |
183 | """ |
|
178 | """ | |
184 | def __init__(self, wrapped): |
|
179 | def __init__(self, wrapped): | |
185 | self.wrapped = wrapped |
|
180 | self.wrapped = wrapped | |
@@ -198,7 +193,7 b' class _AttrNamespace(object):' | |||||
198 | # normal uses case, bizarre ones like accessing the locals() |
|
193 | # normal uses case, bizarre ones like accessing the locals() | |
199 | # will fail |
|
194 | # will fail | |
200 | try: |
|
195 | try: | |
201 |
eval("_", None, |
|
196 | eval("_", None, AttrNamespace(None)) | |
202 | except TypeError: |
|
197 | except TypeError: | |
203 | real_eval = eval |
|
198 | real_eval = eval | |
204 | def eval(codestring, _globals, _locals): |
|
199 | def eval(codestring, _globals, _locals): | |
@@ -1355,7 +1350,7 b' class ifilter(Pipe):' | |||||
1355 | return self.expr(item) |
|
1350 | return self.expr(item) | |
1356 | else: |
|
1351 | else: | |
1357 | def test(item): |
|
1352 | def test(item): | |
1358 |
return eval(self.expr, globals(), |
|
1353 | return eval(self.expr, globals(), AttrNamespace(item)) | |
1359 |
|
1354 | |||
1360 | ok = 0 |
|
1355 | ok = 0 | |
1361 | exc_info = None |
|
1356 | exc_info = None | |
@@ -1426,7 +1421,7 b' class ieval(Pipe):' | |||||
1426 | return self.expr(item) |
|
1421 | return self.expr(item) | |
1427 | else: |
|
1422 | else: | |
1428 | def do(item): |
|
1423 | def do(item): | |
1429 |
return eval(self.expr, globals(), |
|
1424 | return eval(self.expr, globals(), AttrNamespace(item)) | |
1430 |
|
1425 | |||
1431 | ok = 0 |
|
1426 | ok = 0 | |
1432 | exc_info = None |
|
1427 | exc_info = None | |
@@ -1514,7 +1509,7 b' class isort(Pipe):' | |||||
1514 | ) |
|
1509 | ) | |
1515 | else: |
|
1510 | else: | |
1516 | def key(item): |
|
1511 | def key(item): | |
1517 |
return eval(self.key, globals(), |
|
1512 | return eval(self.key, globals(), AttrNamespace(item)) | |
1518 | items = sorted( |
|
1513 | items = sorted( | |
1519 | xiter(self.input, mode), |
|
1514 | xiter(self.input, mode), | |
1520 | key=key, |
|
1515 | key=key, | |
@@ -1779,1419 +1774,14 b' class XAttr(object):' | |||||
1779 | return ("name", "type", "doc", "value") |
|
1774 | return ("name", "type", "doc", "value") | |
1780 |
|
1775 | |||
1781 |
|
1776 | |||
1782 | _ibrowse_help = """ |
|
|||
1783 | down |
|
|||
1784 | Move the cursor to the next line. |
|
|||
1785 |
|
||||
1786 | up |
|
|||
1787 | Move the cursor to the previous line. |
|
|||
1788 |
|
||||
1789 | pagedown |
|
|||
1790 | Move the cursor down one page (minus overlap). |
|
|||
1791 |
|
||||
1792 | pageup |
|
|||
1793 | Move the cursor up one page (minus overlap). |
|
|||
1794 |
|
||||
1795 | left |
|
|||
1796 | Move the cursor left. |
|
|||
1797 |
|
||||
1798 | right |
|
|||
1799 | Move the cursor right. |
|
|||
1800 |
|
||||
1801 | home |
|
|||
1802 | Move the cursor to the first column. |
|
|||
1803 |
|
||||
1804 | end |
|
|||
1805 | Move the cursor to the last column. |
|
|||
1806 |
|
||||
1807 | prevattr |
|
|||
1808 | Move the cursor one attribute column to the left. |
|
|||
1809 |
|
||||
1810 | nextattr |
|
|||
1811 | Move the cursor one attribute column to the right. |
|
|||
1812 |
|
||||
1813 | pick |
|
|||
1814 | 'Pick' the object under the cursor (i.e. the row the cursor is on). This |
|
|||
1815 | leaves the browser and returns the picked object to the caller. (In IPython |
|
|||
1816 | this object will be available as the '_' variable.) |
|
|||
1817 |
|
||||
1818 | pickattr |
|
|||
1819 | 'Pick' the attribute under the cursor (i.e. the row/column the cursor is on). |
|
|||
1820 |
|
||||
1821 | pickallattrs |
|
|||
1822 | Pick' the complete column under the cursor (i.e. the attribute under the |
|
|||
1823 | cursor) from all currently fetched objects. These attributes will be returned |
|
|||
1824 | as a list. |
|
|||
1825 |
|
||||
1826 | tooglemark |
|
|||
1827 | Mark/unmark the object under the cursor. Marked objects have a '!' after the |
|
|||
1828 | row number). |
|
|||
1829 |
|
||||
1830 | pickmarked |
|
|||
1831 | 'Pick' marked objects. Marked objects will be returned as a list. |
|
|||
1832 |
|
||||
1833 | pickmarkedattr |
|
|||
1834 | 'Pick' the attribute under the cursor from all marked objects (This returns a |
|
|||
1835 | list). |
|
|||
1836 |
|
||||
1837 | enterdefault |
|
|||
1838 | Enter the object under the cursor. (what this mean depends on the object |
|
|||
1839 | itself (i.e. how it implements the '__xiter__' method). This opens a new |
|
|||
1840 | browser 'level'. |
|
|||
1841 |
|
||||
1842 | enter |
|
|||
1843 | Enter the object under the cursor. If the object provides different enter |
|
|||
1844 | modes a menu of all modes will be presented; choose one and enter it (via the |
|
|||
1845 | 'enter' or 'enterdefault' command). |
|
|||
1846 |
|
||||
1847 | enterattr |
|
|||
1848 | Enter the attribute under the cursor. |
|
|||
1849 |
|
||||
1850 | leave |
|
|||
1851 | Leave the current browser level and go back to the previous one. |
|
|||
1852 |
|
||||
1853 | detail |
|
|||
1854 | Show a detail view of the object under the cursor. This shows the name, type, |
|
|||
1855 | doc string and value of the object attributes (and it might show more |
|
|||
1856 | attributes than in the list view, depending on the object). |
|
|||
1857 |
|
||||
1858 | detailattr |
|
|||
1859 | Show a detail view of the attribute under the cursor. |
|
|||
1860 |
|
||||
1861 | markrange |
|
|||
1862 | Mark all objects from the last marked object before the current cursor |
|
|||
1863 | position to the cursor position. |
|
|||
1864 |
|
||||
1865 | sortattrasc |
|
|||
1866 | Sort the objects (in ascending order) using the attribute under the cursor as |
|
|||
1867 | the sort key. |
|
|||
1868 |
|
||||
1869 | sortattrdesc |
|
|||
1870 | Sort the objects (in descending order) using the attribute under the cursor as |
|
|||
1871 | the sort key. |
|
|||
1872 |
|
||||
1873 | goto |
|
|||
1874 | Jump to a row. The row number can be entered at the bottom of the screen. |
|
|||
1875 |
|
||||
1876 | find |
|
|||
1877 | Search forward for a row. At the bottom of the screen the condition can be |
|
|||
1878 | entered. |
|
|||
1879 |
|
||||
1880 | findbackwards |
|
|||
1881 | Search backward for a row. At the bottom of the screen the condition can be |
|
|||
1882 | entered. |
|
|||
1883 |
|
||||
1884 | help |
|
|||
1885 | This screen. |
|
|||
1886 | """ |
|
|||
1887 |
|
||||
1888 |
|
||||
1889 | if curses is not None: |
|
|||
1890 | class UnassignedKeyError(Exception): |
|
|||
1891 | """ |
|
|||
1892 | Exception that is used for reporting unassigned keys. |
|
|||
1893 | """ |
|
|||
1894 |
|
||||
1895 |
|
||||
1896 | class UnknownCommandError(Exception): |
|
|||
1897 | """ |
|
|||
1898 | Exception that is used for reporting unknown command (this should never |
|
|||
1899 | happen). |
|
|||
1900 | """ |
|
|||
1901 |
|
||||
1902 |
|
||||
1903 | class CommandError(Exception): |
|
|||
1904 | """ |
|
|||
1905 | Exception that is used for reporting that a command can't be executed. |
|
|||
1906 | """ |
|
|||
1907 |
|
||||
1908 |
|
||||
1909 | class _BrowserCachedItem(object): |
|
|||
1910 | # This is used internally by ``ibrowse`` to store a item together with its |
|
|||
1911 | # marked status. |
|
|||
1912 | __slots__ = ("item", "marked") |
|
|||
1913 |
|
||||
1914 | def __init__(self, item): |
|
|||
1915 | self.item = item |
|
|||
1916 | self.marked = False |
|
|||
1917 |
|
||||
1918 |
|
||||
1919 | class _BrowserHelp(object): |
|
|||
1920 | style_header = astyle.Style.fromstr("red:blacK") |
|
|||
1921 | # This is used internally by ``ibrowse`` for displaying the help screen. |
|
|||
1922 | def __init__(self, browser): |
|
|||
1923 | self.browser = browser |
|
|||
1924 |
|
||||
1925 | def __xrepr__(self, mode): |
|
|||
1926 | yield (-1, True) |
|
|||
1927 | if mode == "header" or mode == "footer": |
|
|||
1928 | yield (astyle.style_default, "ibrowse help screen") |
|
|||
1929 | else: |
|
|||
1930 | yield (astyle.style_default, repr(self)) |
|
|||
1931 |
|
||||
1932 | def __xiter__(self, mode): |
|
|||
1933 | # Get reverse key mapping |
|
|||
1934 | allkeys = {} |
|
|||
1935 | for (key, cmd) in self.browser.keymap.iteritems(): |
|
|||
1936 | allkeys.setdefault(cmd, []).append(key) |
|
|||
1937 |
|
||||
1938 | fields = ("key", "description") |
|
|||
1939 |
|
||||
1940 | for (i, command) in enumerate(_ibrowse_help.strip().split("\n\n")): |
|
|||
1941 | if i: |
|
|||
1942 | yield Fields(fields, key="", description="") |
|
|||
1943 |
|
||||
1944 | (name, description) = command.split("\n", 1) |
|
|||
1945 | keys = allkeys.get(name, []) |
|
|||
1946 | lines = textwrap.wrap(description, 60) |
|
|||
1947 |
|
||||
1948 | yield Fields(fields, description=astyle.Text((self.style_header, name))) |
|
|||
1949 | for i in xrange(max(len(keys), len(lines))): |
|
|||
1950 | try: |
|
|||
1951 | key = self.browser.keylabel(keys[i]) |
|
|||
1952 | except IndexError: |
|
|||
1953 | key = "" |
|
|||
1954 | try: |
|
|||
1955 | line = lines[i] |
|
|||
1956 | except IndexError: |
|
|||
1957 | line = "" |
|
|||
1958 | yield Fields(fields, key=key, description=line) |
|
|||
1959 |
|
||||
1960 |
|
||||
1961 | class _BrowserLevel(object): |
|
|||
1962 | # This is used internally to store the state (iterator, fetch items, |
|
|||
1963 | # position of cursor and screen, etc.) of one browser level |
|
|||
1964 | # An ``ibrowse`` object keeps multiple ``_BrowserLevel`` objects in |
|
|||
1965 | # a stack. |
|
|||
1966 | def __init__(self, browser, input, iterator, mainsizey, *attrs): |
|
|||
1967 | self.browser = browser |
|
|||
1968 | self.input = input |
|
|||
1969 | self.header = [x for x in xrepr(input, "header") if not isinstance(x[0], int)] |
|
|||
1970 | # iterator for the input |
|
|||
1971 | self.iterator = iterator |
|
|||
1972 |
|
||||
1973 | # is the iterator exhausted? |
|
|||
1974 | self.exhausted = False |
|
|||
1975 |
|
||||
1976 | # attributes to be display (autodetected if empty) |
|
|||
1977 | self.attrs = attrs |
|
|||
1978 |
|
||||
1979 | # fetched items (+ marked flag) |
|
|||
1980 | self.items = deque() |
|
|||
1981 |
|
||||
1982 | # Number of marked objects |
|
|||
1983 | self.marked = 0 |
|
|||
1984 |
|
||||
1985 | # Vertical cursor position |
|
|||
1986 | self.cury = 0 |
|
|||
1987 |
|
||||
1988 | # Horizontal cursor position |
|
|||
1989 | self.curx = 0 |
|
|||
1990 |
|
||||
1991 | # Index of first data column |
|
|||
1992 | self.datastartx = 0 |
|
|||
1993 |
|
||||
1994 | # Index of first data line |
|
|||
1995 | self.datastarty = 0 |
|
|||
1996 |
|
||||
1997 | # height of the data display area |
|
|||
1998 | self.mainsizey = mainsizey |
|
|||
1999 |
|
||||
2000 | # width of the data display area (changes when scrolling) |
|
|||
2001 | self.mainsizex = 0 |
|
|||
2002 |
|
||||
2003 | # Size of row number (changes when scrolling) |
|
|||
2004 | self.numbersizex = 0 |
|
|||
2005 |
|
||||
2006 | # Attribute names to display (in this order) |
|
|||
2007 | self.displayattrs = [] |
|
|||
2008 |
|
||||
2009 | # index and name of attribute under the cursor |
|
|||
2010 | self.displayattr = (None, _default) |
|
|||
2011 |
|
||||
2012 | # Maps attribute names to column widths |
|
|||
2013 | self.colwidths = {} |
|
|||
2014 |
|
||||
2015 | self.fetch(mainsizey) |
|
|||
2016 | self.calcdisplayattrs() |
|
|||
2017 | # formatted attributes for the items on screen |
|
|||
2018 | # (i.e. self.items[self.datastarty:self.datastarty+self.mainsizey]) |
|
|||
2019 | self.displayrows = [self.getrow(i) for i in xrange(len(self.items))] |
|
|||
2020 | self.calcwidths() |
|
|||
2021 | self.calcdisplayattr() |
|
|||
2022 |
|
||||
2023 | def fetch(self, count): |
|
|||
2024 | # Try to fill ``self.items`` with at least ``count`` objects. |
|
|||
2025 | have = len(self.items) |
|
|||
2026 | while not self.exhausted and have < count: |
|
|||
2027 | try: |
|
|||
2028 | item = self.iterator.next() |
|
|||
2029 | except StopIteration: |
|
|||
2030 | self.exhausted = True |
|
|||
2031 | break |
|
|||
2032 | else: |
|
|||
2033 | have += 1 |
|
|||
2034 | self.items.append(_BrowserCachedItem(item)) |
|
|||
2035 |
|
||||
2036 | def calcdisplayattrs(self): |
|
|||
2037 | # Calculate which attributes are available from the objects that are |
|
|||
2038 | # currently visible on screen (and store it in ``self.displayattrs``) |
|
|||
2039 | attrnames = set() |
|
|||
2040 | # If the browser object specifies a fixed list of attributes, |
|
|||
2041 | # simply use it. |
|
|||
2042 | if self.attrs: |
|
|||
2043 | self.displayattrs = self.attrs |
|
|||
2044 | else: |
|
|||
2045 | self.displayattrs = [] |
|
|||
2046 | endy = min(self.datastarty+self.mainsizey, len(self.items)) |
|
|||
2047 | for i in xrange(self.datastarty, endy): |
|
|||
2048 | for attrname in xattrs(self.items[i].item, "default"): |
|
|||
2049 | if attrname not in attrnames: |
|
|||
2050 | self.displayattrs.append(attrname) |
|
|||
2051 | attrnames.add(attrname) |
|
|||
2052 |
|
||||
2053 | def getrow(self, i): |
|
|||
2054 | # Return a dictinary with the attributes for the object |
|
|||
2055 | # ``self.items[i]``. Attribute names are taken from |
|
|||
2056 | # ``self.displayattrs`` so ``calcdisplayattrs()`` must have been |
|
|||
2057 | # called before. |
|
|||
2058 | row = {} |
|
|||
2059 | item = self.items[i].item |
|
|||
2060 | for attrname in self.displayattrs: |
|
|||
2061 | try: |
|
|||
2062 | value = _getattr(item, attrname, _default) |
|
|||
2063 | except (KeyboardInterrupt, SystemExit): |
|
|||
2064 | raise |
|
|||
2065 | except Exception, exc: |
|
|||
2066 | value = exc |
|
|||
2067 | # only store attribute if it exists (or we got an exception) |
|
|||
2068 | if value is not _default: |
|
|||
2069 | parts = [] |
|
|||
2070 | totallength = 0 |
|
|||
2071 | align = None |
|
|||
2072 | full = False |
|
|||
2073 | # Collect parts until we have enough |
|
|||
2074 | for part in xrepr(value, "cell"): |
|
|||
2075 | # part gives (alignment, stop) |
|
|||
2076 | # instead of (style, text) |
|
|||
2077 | if isinstance(part[0], int): |
|
|||
2078 | # only consider the first occurence |
|
|||
2079 | if align is None: |
|
|||
2080 | align = part[0] |
|
|||
2081 | full = part[1] |
|
|||
2082 | else: |
|
|||
2083 | parts.append(part) |
|
|||
2084 | totallength += len(part[1]) |
|
|||
2085 | if totallength >= self.browser.maxattrlength and not full: |
|
|||
2086 | parts.append((astyle.style_ellisis, "...")) |
|
|||
2087 | totallength += 3 |
|
|||
2088 | break |
|
|||
2089 | # remember alignment, length and colored parts |
|
|||
2090 | row[attrname] = (align, totallength, parts) |
|
|||
2091 | return row |
|
|||
2092 |
|
||||
2093 | def calcwidths(self): |
|
|||
2094 | # Recalculate the displayed fields and their width. |
|
|||
2095 | # ``calcdisplayattrs()'' must have been called and the cache |
|
|||
2096 | # for attributes of the objects on screen (``self.displayrows``) |
|
|||
2097 | # must have been filled. This returns a dictionary mapping |
|
|||
2098 | # colmn names to width. |
|
|||
2099 | self.colwidths = {} |
|
|||
2100 | for row in self.displayrows: |
|
|||
2101 | for attrname in self.displayattrs: |
|
|||
2102 | try: |
|
|||
2103 | length = row[attrname][1] |
|
|||
2104 | except KeyError: |
|
|||
2105 | length = 0 |
|
|||
2106 | # always add attribute to colwidths, even if it doesn't exist |
|
|||
2107 | if attrname not in self.colwidths: |
|
|||
2108 | self.colwidths[attrname] = len(_attrname(attrname)) |
|
|||
2109 | newwidth = max(self.colwidths[attrname], length) |
|
|||
2110 | self.colwidths[attrname] = newwidth |
|
|||
2111 |
|
||||
2112 | # How many characters do we need to paint the item number? |
|
|||
2113 | self.numbersizex = len(str(self.datastarty+self.mainsizey-1)) |
|
|||
2114 | # How must space have we got to display data? |
|
|||
2115 | self.mainsizex = self.browser.scrsizex-self.numbersizex-3 |
|
|||
2116 | # width of all columns |
|
|||
2117 | self.datasizex = sum(self.colwidths.itervalues()) + len(self.colwidths) |
|
|||
2118 |
|
||||
2119 | def calcdisplayattr(self): |
|
|||
2120 | # Find out on which attribute the cursor is on and store this |
|
|||
2121 | # information in ``self.displayattr``. |
|
|||
2122 | pos = 0 |
|
|||
2123 | for (i, attrname) in enumerate(self.displayattrs): |
|
|||
2124 | if pos+self.colwidths[attrname] >= self.curx: |
|
|||
2125 | self.displayattr = (i, attrname) |
|
|||
2126 | break |
|
|||
2127 | pos += self.colwidths[attrname]+1 |
|
|||
2128 | else: |
|
|||
2129 | self.displayattr = (None, _default) |
|
|||
2130 |
|
||||
2131 | def moveto(self, x, y, refresh=False): |
|
|||
2132 | # Move the cursor to the position ``(x,y)`` (in data coordinates, |
|
|||
2133 | # not in screen coordinates). If ``refresh`` is true, all cached |
|
|||
2134 | # values will be recalculated (e.g. because the list has been |
|
|||
2135 | # resorted, so screen positions etc. are no longer valid). |
|
|||
2136 | olddatastarty = self.datastarty |
|
|||
2137 | oldx = self.curx |
|
|||
2138 | oldy = self.cury |
|
|||
2139 | x = int(x+0.5) |
|
|||
2140 | y = int(y+0.5) |
|
|||
2141 | newx = x # remember where we wanted to move |
|
|||
2142 | newy = y # remember where we wanted to move |
|
|||
2143 |
|
||||
2144 | scrollbordery = min(self.browser.scrollbordery, self.mainsizey//2) |
|
|||
2145 | scrollborderx = min(self.browser.scrollborderx, self.mainsizex//2) |
|
|||
2146 |
|
||||
2147 | # Make sure that the cursor didn't leave the main area vertically |
|
|||
2148 | if y < 0: |
|
|||
2149 | y = 0 |
|
|||
2150 | self.fetch(y+scrollbordery+1) # try to get more items |
|
|||
2151 | if y >= len(self.items): |
|
|||
2152 | y = max(0, len(self.items)-1) |
|
|||
2153 |
|
||||
2154 | # Make sure that the cursor stays on screen vertically |
|
|||
2155 | if y < self.datastarty+scrollbordery: |
|
|||
2156 | self.datastarty = max(0, y-scrollbordery) |
|
|||
2157 | elif y >= self.datastarty+self.mainsizey-scrollbordery: |
|
|||
2158 | self.datastarty = max(0, min(y-self.mainsizey+scrollbordery+1, |
|
|||
2159 | len(self.items)-self.mainsizey)) |
|
|||
2160 |
|
||||
2161 | if refresh: # Do we need to refresh the complete display? |
|
|||
2162 | self.calcdisplayattrs() |
|
|||
2163 | endy = min(self.datastarty+self.mainsizey, len(self.items)) |
|
|||
2164 | self.displayrows = map(self.getrow, xrange(self.datastarty, endy)) |
|
|||
2165 | self.calcwidths() |
|
|||
2166 | # Did we scroll vertically => update displayrows |
|
|||
2167 | # and various other attributes |
|
|||
2168 | elif self.datastarty != olddatastarty: |
|
|||
2169 | # Recalculate which attributes we have to display |
|
|||
2170 | olddisplayattrs = self.displayattrs |
|
|||
2171 | self.calcdisplayattrs() |
|
|||
2172 | # If there are new attributes, recreate the cache |
|
|||
2173 | if self.displayattrs != olddisplayattrs: |
|
|||
2174 | endy = min(self.datastarty+self.mainsizey, len(self.items)) |
|
|||
2175 | self.displayrows = map(self.getrow, xrange(self.datastarty, endy)) |
|
|||
2176 | elif self.datastarty<olddatastarty: # we did scroll up |
|
|||
2177 | # drop rows from the end |
|
|||
2178 | del self.displayrows[self.datastarty-olddatastarty:] |
|
|||
2179 | # fetch new items |
|
|||
2180 | for i in xrange(olddatastarty-1, |
|
|||
2181 | self.datastarty-1, -1): |
|
|||
2182 | try: |
|
|||
2183 | row = self.getrow(i) |
|
|||
2184 | except IndexError: |
|
|||
2185 | # we didn't have enough objects to fill the screen |
|
|||
2186 | break |
|
|||
2187 | self.displayrows.insert(0, row) |
|
|||
2188 | else: # we did scroll down |
|
|||
2189 | # drop rows from the start |
|
|||
2190 | del self.displayrows[:self.datastarty-olddatastarty] |
|
|||
2191 | # fetch new items |
|
|||
2192 | for i in xrange(olddatastarty+self.mainsizey, |
|
|||
2193 | self.datastarty+self.mainsizey): |
|
|||
2194 | try: |
|
|||
2195 | row = self.getrow(i) |
|
|||
2196 | except IndexError: |
|
|||
2197 | # we didn't have enough objects to fill the screen |
|
|||
2198 | break |
|
|||
2199 | self.displayrows.append(row) |
|
|||
2200 | self.calcwidths() |
|
|||
2201 |
|
||||
2202 | # Make sure that the cursor didn't leave the data area horizontally |
|
|||
2203 | if x < 0: |
|
|||
2204 | x = 0 |
|
|||
2205 | elif x >= self.datasizex: |
|
|||
2206 | x = max(0, self.datasizex-1) |
|
|||
2207 |
|
||||
2208 | # Make sure that the cursor stays on screen horizontally |
|
|||
2209 | if x < self.datastartx+scrollborderx: |
|
|||
2210 | self.datastartx = max(0, x-scrollborderx) |
|
|||
2211 | elif x >= self.datastartx+self.mainsizex-scrollborderx: |
|
|||
2212 | self.datastartx = max(0, min(x-self.mainsizex+scrollborderx+1, |
|
|||
2213 | self.datasizex-self.mainsizex)) |
|
|||
2214 |
|
||||
2215 | if x == oldx and y == oldy and (x != newx or y != newy): # couldn't move |
|
|||
2216 | self.browser.beep() |
|
|||
2217 | else: |
|
|||
2218 | self.curx = x |
|
|||
2219 | self.cury = y |
|
|||
2220 | self.calcdisplayattr() |
|
|||
2221 |
|
||||
2222 | def sort(self, key, reverse=False): |
|
|||
2223 | """ |
|
|||
2224 | Sort the currently list of items using the key function ``key``. If |
|
|||
2225 | ``reverse`` is true the sort order is reversed. |
|
|||
2226 | """ |
|
|||
2227 | curitem = self.items[self.cury] # Remember where the cursor is now |
|
|||
2228 |
|
||||
2229 | # Sort items |
|
|||
2230 | def realkey(item): |
|
|||
2231 | return key(item.item) |
|
|||
2232 | self.items = deque(sorted(self.items, key=realkey, reverse=reverse)) |
|
|||
2233 |
|
||||
2234 | # Find out where the object under the cursor went |
|
|||
2235 | cury = self.cury |
|
|||
2236 | for (i, item) in enumerate(self.items): |
|
|||
2237 | if item is curitem: |
|
|||
2238 | cury = i |
|
|||
2239 | break |
|
|||
2240 |
|
||||
2241 | self.moveto(self.curx, cury, refresh=True) |
|
|||
2242 |
|
||||
2243 |
|
||||
2244 | class ibrowse(Display): |
|
|||
2245 | # Show this many lines from the previous screen when paging horizontally |
|
|||
2246 | pageoverlapx = 1 |
|
|||
2247 |
|
||||
2248 | # Show this many lines from the previous screen when paging vertically |
|
|||
2249 | pageoverlapy = 1 |
|
|||
2250 |
|
||||
2251 | # Start scrolling when the cursor is less than this number of columns |
|
|||
2252 | # away from the left or right screen edge |
|
|||
2253 | scrollborderx = 10 |
|
|||
2254 |
|
||||
2255 | # Start scrolling when the cursor is less than this number of lines |
|
|||
2256 | # away from the top or bottom screen edge |
|
|||
2257 | scrollbordery = 5 |
|
|||
2258 |
|
||||
2259 | # Accelerate by this factor when scrolling horizontally |
|
|||
2260 | acceleratex = 1.05 |
|
|||
2261 |
|
||||
2262 | # Accelerate by this factor when scrolling vertically |
|
|||
2263 | acceleratey = 1.05 |
|
|||
2264 |
|
||||
2265 | # The maximum horizontal scroll speed |
|
|||
2266 | # (as a factor of the screen width (i.e. 0.5 == half a screen width) |
|
|||
2267 | maxspeedx = 0.5 |
|
|||
2268 |
|
||||
2269 | # The maximum vertical scroll speed |
|
|||
2270 | # (as a factor of the screen height (i.e. 0.5 == half a screen height) |
|
|||
2271 | maxspeedy = 0.5 |
|
|||
2272 |
|
||||
2273 | # The maximum number of header lines for browser level |
|
|||
2274 | # if the nesting is deeper, only the innermost levels are displayed |
|
|||
2275 | maxheaders = 5 |
|
|||
2276 |
|
||||
2277 | # The approximate maximum length of a column entry |
|
|||
2278 | maxattrlength = 200 |
|
|||
2279 |
|
||||
2280 | # Styles for various parts of the GUI |
|
|||
2281 | style_objheadertext = astyle.Style.fromstr("white:black:bold|reverse") |
|
|||
2282 | style_objheadernumber = astyle.Style.fromstr("white:blue:bold|reverse") |
|
|||
2283 | style_objheaderobject = astyle.Style.fromstr("white:black:reverse") |
|
|||
2284 | style_colheader = astyle.Style.fromstr("blue:white:reverse") |
|
|||
2285 | style_colheaderhere = astyle.Style.fromstr("green:black:bold|reverse") |
|
|||
2286 | style_colheadersep = astyle.Style.fromstr("blue:black:reverse") |
|
|||
2287 | style_number = astyle.Style.fromstr("blue:white:reverse") |
|
|||
2288 | style_numberhere = astyle.Style.fromstr("green:black:bold|reverse") |
|
|||
2289 | style_sep = astyle.Style.fromstr("blue:black") |
|
|||
2290 | style_data = astyle.Style.fromstr("white:black") |
|
|||
2291 | style_datapad = astyle.Style.fromstr("blue:black:bold") |
|
|||
2292 | style_footer = astyle.Style.fromstr("black:white") |
|
|||
2293 | style_report = astyle.Style.fromstr("white:black") |
|
|||
2294 |
|
||||
2295 | # Column separator in header |
|
|||
2296 | headersepchar = "|" |
|
|||
2297 |
|
||||
2298 | # Character for padding data cell entries |
|
|||
2299 | datapadchar = "." |
|
|||
2300 |
|
||||
2301 | # Column separator in data area |
|
|||
2302 | datasepchar = "|" |
|
|||
2303 |
|
||||
2304 | # Character to use for "empty" cell (i.e. for non-existing attributes) |
|
|||
2305 | nodatachar = "-" |
|
|||
2306 |
|
||||
2307 | # Prompts for modes that require keyboard input |
|
|||
2308 | prompts = { |
|
|||
2309 | "goto": "goto object #: ", |
|
|||
2310 | "find": "find expression: ", |
|
|||
2311 | "findbackwards": "find backwards expression: " |
|
|||
2312 | } |
|
|||
2313 |
|
||||
2314 | # Maps curses key codes to "function" names |
|
|||
2315 | keymap = { |
|
|||
2316 | ord("q"): "quit", |
|
|||
2317 | curses.KEY_UP: "up", |
|
|||
2318 | curses.KEY_DOWN: "down", |
|
|||
2319 | curses.KEY_PPAGE: "pageup", |
|
|||
2320 | curses.KEY_NPAGE: "pagedown", |
|
|||
2321 | curses.KEY_LEFT: "left", |
|
|||
2322 | curses.KEY_RIGHT: "right", |
|
|||
2323 | curses.KEY_HOME: "home", |
|
|||
2324 | curses.KEY_END: "end", |
|
|||
2325 | ord("<"): "prevattr", |
|
|||
2326 | 0x1b: "prevattr", # SHIFT-TAB |
|
|||
2327 | ord(">"): "nextattr", |
|
|||
2328 | ord("\t"):"nextattr", # TAB |
|
|||
2329 | ord("p"): "pick", |
|
|||
2330 | ord("P"): "pickattr", |
|
|||
2331 | ord("C"): "pickallattrs", |
|
|||
2332 | ord("m"): "pickmarked", |
|
|||
2333 | ord("M"): "pickmarkedattr", |
|
|||
2334 | ord("\n"): "enterdefault", |
|
|||
2335 | # FIXME: What's happening here? |
|
|||
2336 | 8: "leave", |
|
|||
2337 | 127: "leave", |
|
|||
2338 | curses.KEY_BACKSPACE: "leave", |
|
|||
2339 | ord("x"): "leave", |
|
|||
2340 | ord("h"): "help", |
|
|||
2341 | ord("e"): "enter", |
|
|||
2342 | ord("E"): "enterattr", |
|
|||
2343 | ord("d"): "detail", |
|
|||
2344 | ord("D"): "detailattr", |
|
|||
2345 | ord(" "): "tooglemark", |
|
|||
2346 | ord("r"): "markrange", |
|
|||
2347 | ord("v"): "sortattrasc", |
|
|||
2348 | ord("V"): "sortattrdesc", |
|
|||
2349 | ord("g"): "goto", |
|
|||
2350 | ord("f"): "find", |
|
|||
2351 | ord("b"): "findbackwards", |
|
|||
2352 | } |
|
|||
2353 |
|
||||
2354 | def __init__(self, *attrs): |
|
|||
2355 | """ |
|
|||
2356 | Create a new browser. If ``attrs`` is not empty, it is the list |
|
|||
2357 | of attributes that will be displayed in the browser, otherwise |
|
|||
2358 | these will be determined by the objects on screen. |
|
|||
2359 | """ |
|
|||
2360 | self.attrs = attrs |
|
|||
2361 |
|
||||
2362 | # Stack of browser levels |
|
|||
2363 | self.levels = [] |
|
|||
2364 | # how many colums to scroll (Changes when accelerating) |
|
|||
2365 | self.stepx = 1. |
|
|||
2366 |
|
||||
2367 | # how many rows to scroll (Changes when accelerating) |
|
|||
2368 | self.stepy = 1. |
|
|||
2369 |
|
||||
2370 | # Beep on the edges of the data area? (Will be set to ``False`` |
|
|||
2371 | # once the cursor hits the edge of the screen, so we don't get |
|
|||
2372 | # multiple beeps). |
|
|||
2373 | self._dobeep = True |
|
|||
2374 |
|
||||
2375 | # Cache for registered ``curses`` colors and styles. |
|
|||
2376 | self._styles = {} |
|
|||
2377 | self._colors = {} |
|
|||
2378 | self._maxcolor = 1 |
|
|||
2379 |
|
||||
2380 | # How many header lines do we want to paint (the numbers of levels |
|
|||
2381 | # we have, but with an upper bound) |
|
|||
2382 | self._headerlines = 1 |
|
|||
2383 |
|
||||
2384 | # Index of first header line |
|
|||
2385 | self._firstheaderline = 0 |
|
|||
2386 |
|
||||
2387 | # curses window |
|
|||
2388 | self.scr = None |
|
|||
2389 | # report in the footer line (error, executed command etc.) |
|
|||
2390 | self._report = None |
|
|||
2391 |
|
||||
2392 | # value to be returned to the caller (set by commands) |
|
|||
2393 | self.returnvalue = None |
|
|||
2394 |
|
||||
2395 | # The mode the browser is in |
|
|||
2396 | # e.g. normal browsing or entering an argument for a command |
|
|||
2397 | self.mode = "default" |
|
|||
2398 |
|
||||
2399 | # The partially entered row number for the goto command |
|
|||
2400 | self.goto = "" |
|
|||
2401 |
|
||||
2402 | def nextstepx(self, step): |
|
|||
2403 | """ |
|
|||
2404 | Accelerate horizontally. |
|
|||
2405 | """ |
|
|||
2406 | return max(1., min(step*self.acceleratex, |
|
|||
2407 | self.maxspeedx*self.levels[-1].mainsizex)) |
|
|||
2408 |
|
||||
2409 | def nextstepy(self, step): |
|
|||
2410 | """ |
|
|||
2411 | Accelerate vertically. |
|
|||
2412 | """ |
|
|||
2413 | return max(1., min(step*self.acceleratey, |
|
|||
2414 | self.maxspeedy*self.levels[-1].mainsizey)) |
|
|||
2415 |
|
||||
2416 | def getstyle(self, style): |
|
|||
2417 | """ |
|
|||
2418 | Register the ``style`` with ``curses`` or get it from the cache, |
|
|||
2419 | if it has been registered before. |
|
|||
2420 | """ |
|
|||
2421 | try: |
|
|||
2422 | return self._styles[style.fg, style.bg, style.attrs] |
|
|||
2423 | except KeyError: |
|
|||
2424 | attrs = 0 |
|
|||
2425 | for b in astyle.A2CURSES: |
|
|||
2426 | if style.attrs & b: |
|
|||
2427 | attrs |= astyle.A2CURSES[b] |
|
|||
2428 | try: |
|
1777 | try: | |
2429 | color = self._colors[style.fg, style.bg] |
|
1778 | from ibrowse import ibrowse | |
2430 | except KeyError: |
|
1779 | except ImportError: | |
2431 | curses.init_pair( |
|
1780 | # No curses (probably Windows) => use ``idump`` as the default display. | |
2432 | self._maxcolor, |
|
1781 | defaultdisplay = idump | |
2433 | astyle.COLOR2CURSES[style.fg], |
|
|||
2434 | astyle.COLOR2CURSES[style.bg] |
|
|||
2435 | ) |
|
|||
2436 | color = curses.color_pair(self._maxcolor) |
|
|||
2437 | self._colors[style.fg, style.bg] = color |
|
|||
2438 | self._maxcolor += 1 |
|
|||
2439 | c = color | attrs |
|
|||
2440 | self._styles[style.fg, style.bg, style.attrs] = c |
|
|||
2441 | return c |
|
|||
2442 |
|
||||
2443 | def addstr(self, y, x, begx, endx, text, style): |
|
|||
2444 | """ |
|
|||
2445 | A version of ``curses.addstr()`` that can handle ``x`` coordinates |
|
|||
2446 | that are outside the screen. |
|
|||
2447 | """ |
|
|||
2448 | text2 = text[max(0, begx-x):max(0, endx-x)] |
|
|||
2449 | if text2: |
|
|||
2450 | self.scr.addstr(y, max(x, begx), text2, self.getstyle(style)) |
|
|||
2451 | return len(text) |
|
|||
2452 |
|
||||
2453 | def addchr(self, y, x, begx, endx, c, l, style): |
|
|||
2454 | x0 = max(x, begx) |
|
|||
2455 | x1 = min(x+l, endx) |
|
|||
2456 | if x1>x0: |
|
|||
2457 | self.scr.addstr(y, x0, c*(x1-x0), self.getstyle(style)) |
|
|||
2458 | return l |
|
|||
2459 |
|
||||
2460 | def _calcheaderlines(self, levels): |
|
|||
2461 | # Calculate how many headerlines do we have to display, if we have |
|
|||
2462 | # ``levels`` browser levels |
|
|||
2463 | if levels is None: |
|
|||
2464 | levels = len(self.levels) |
|
|||
2465 | self._headerlines = min(self.maxheaders, levels) |
|
|||
2466 | self._firstheaderline = levels-self._headerlines |
|
|||
2467 |
|
||||
2468 | def getstylehere(self, style): |
|
|||
2469 | """ |
|
|||
2470 | Return a style for displaying the original style ``style`` |
|
|||
2471 | in the row the cursor is on. |
|
|||
2472 | """ |
|
|||
2473 | return astyle.Style(style.fg, style.bg, style.attrs | astyle.A_BOLD) |
|
|||
2474 |
|
||||
2475 | def report(self, msg): |
|
|||
2476 | """ |
|
|||
2477 | Store the message ``msg`` for display below the footer line. This |
|
|||
2478 | will be displayed as soon as the screen is redrawn. |
|
|||
2479 | """ |
|
|||
2480 | self._report = msg |
|
|||
2481 |
|
||||
2482 | def enter(self, item, mode, *attrs): |
|
|||
2483 | """ |
|
|||
2484 | Enter the object ``item`` in the mode ``mode``. If ``attrs`` is |
|
|||
2485 | specified, it will be used as a fixed list of attributes to display. |
|
|||
2486 | """ |
|
|||
2487 | try: |
|
|||
2488 | iterator = xiter(item, mode) |
|
|||
2489 | except (KeyboardInterrupt, SystemExit): |
|
|||
2490 | raise |
|
|||
2491 | except Exception, exc: |
|
|||
2492 | curses.beep() |
|
|||
2493 | self.report(exc) |
|
|||
2494 | else: |
|
|||
2495 | self._calcheaderlines(len(self.levels)+1) |
|
|||
2496 | level = _BrowserLevel( |
|
|||
2497 | self, |
|
|||
2498 | item, |
|
|||
2499 | iterator, |
|
|||
2500 | self.scrsizey-1-self._headerlines-2, |
|
|||
2501 | *attrs |
|
|||
2502 | ) |
|
|||
2503 | self.levels.append(level) |
|
|||
2504 |
|
||||
2505 | def startkeyboardinput(self, mode): |
|
|||
2506 | """ |
|
|||
2507 | Enter mode ``mode``, which requires keyboard input. |
|
|||
2508 | """ |
|
|||
2509 | self.mode = mode |
|
|||
2510 | self.keyboardinput = "" |
|
|||
2511 | self.cursorpos = 0 |
|
|||
2512 |
|
||||
2513 | def executekeyboardinput(self, mode): |
|
|||
2514 | exe = getattr(self, "exe_%s" % mode, None) |
|
|||
2515 | if exe is not None: |
|
|||
2516 | exe() |
|
|||
2517 | self.mode = "default" |
|
|||
2518 |
|
||||
2519 | def keylabel(self, keycode): |
|
|||
2520 | """ |
|
|||
2521 | Return a pretty name for the ``curses`` key ``keycode`` (used in the |
|
|||
2522 | help screen and in reports about unassigned keys). |
|
|||
2523 | """ |
|
|||
2524 | if keycode <= 0xff: |
|
|||
2525 | specialsnames = { |
|
|||
2526 | ord("\n"): "RETURN", |
|
|||
2527 | ord(" "): "SPACE", |
|
|||
2528 | ord("\t"): "TAB", |
|
|||
2529 | ord("\x7f"): "DELETE", |
|
|||
2530 | ord("\x08"): "BACKSPACE", |
|
|||
2531 | } |
|
|||
2532 | if keycode in specialsnames: |
|
|||
2533 | return specialsnames[keycode] |
|
|||
2534 | return repr(chr(keycode)) |
|
|||
2535 | for name in dir(curses): |
|
|||
2536 | if name.startswith("KEY_") and getattr(curses, name) == keycode: |
|
|||
2537 | return name |
|
|||
2538 | return str(keycode) |
|
|||
2539 |
|
||||
2540 | def beep(self, force=False): |
|
|||
2541 | if force or self._dobeep: |
|
|||
2542 | curses.beep() |
|
|||
2543 | # don't beep again (as long as the same key is pressed) |
|
|||
2544 | self._dobeep = False |
|
|||
2545 |
|
||||
2546 | def cmd_quit(self): |
|
|||
2547 | self.returnvalue = None |
|
|||
2548 | return True |
|
|||
2549 |
|
||||
2550 | def cmd_up(self): |
|
|||
2551 | level = self.levels[-1] |
|
|||
2552 | self.report("up") |
|
|||
2553 | level.moveto(level.curx, level.cury-self.stepy) |
|
|||
2554 |
|
||||
2555 | def cmd_down(self): |
|
|||
2556 | level = self.levels[-1] |
|
|||
2557 | self.report("down") |
|
|||
2558 | level.moveto(level.curx, level.cury+self.stepy) |
|
|||
2559 |
|
||||
2560 | def cmd_pageup(self): |
|
|||
2561 | level = self.levels[-1] |
|
|||
2562 | self.report("page up") |
|
|||
2563 | level.moveto(level.curx, level.cury-level.mainsizey+self.pageoverlapy) |
|
|||
2564 |
|
||||
2565 | def cmd_pagedown(self): |
|
|||
2566 | level = self.levels[-1] |
|
|||
2567 | self.report("page down") |
|
|||
2568 | level.moveto(level.curx, level.cury+level.mainsizey-self.pageoverlapy) |
|
|||
2569 |
|
||||
2570 | def cmd_left(self): |
|
|||
2571 | level = self.levels[-1] |
|
|||
2572 | self.report("left") |
|
|||
2573 | level.moveto(level.curx-self.stepx, level.cury) |
|
|||
2574 |
|
||||
2575 | def cmd_right(self): |
|
|||
2576 | level = self.levels[-1] |
|
|||
2577 | self.report("right") |
|
|||
2578 | level.moveto(level.curx+self.stepx, level.cury) |
|
|||
2579 |
|
||||
2580 | def cmd_home(self): |
|
|||
2581 | level = self.levels[-1] |
|
|||
2582 | self.report("home") |
|
|||
2583 | level.moveto(0, level.cury) |
|
|||
2584 |
|
||||
2585 | def cmd_end(self): |
|
|||
2586 | level = self.levels[-1] |
|
|||
2587 | self.report("end") |
|
|||
2588 | level.moveto(level.datasizex+level.mainsizey-self.pageoverlapx, level.cury) |
|
|||
2589 |
|
||||
2590 | def cmd_prevattr(self): |
|
|||
2591 | level = self.levels[-1] |
|
|||
2592 | if level.displayattr[0] is None or level.displayattr[0] == 0: |
|
|||
2593 | self.beep() |
|
|||
2594 | else: |
|
|||
2595 | self.report("prevattr") |
|
|||
2596 | pos = 0 |
|
|||
2597 | for (i, attrname) in enumerate(level.displayattrs): |
|
|||
2598 | if i == level.displayattr[0]-1: |
|
|||
2599 | break |
|
|||
2600 | pos += level.colwidths[attrname] + 1 |
|
|||
2601 | level.moveto(pos, level.cury) |
|
|||
2602 |
|
||||
2603 | def cmd_nextattr(self): |
|
|||
2604 | level = self.levels[-1] |
|
|||
2605 | if level.displayattr[0] is None or level.displayattr[0] == len(level.displayattrs)-1: |
|
|||
2606 | self.beep() |
|
|||
2607 | else: |
|
|||
2608 | self.report("nextattr") |
|
|||
2609 | pos = 0 |
|
|||
2610 | for (i, attrname) in enumerate(level.displayattrs): |
|
|||
2611 | if i == level.displayattr[0]+1: |
|
|||
2612 | break |
|
|||
2613 | pos += level.colwidths[attrname] + 1 |
|
|||
2614 | level.moveto(pos, level.cury) |
|
|||
2615 |
|
||||
2616 | def cmd_pick(self): |
|
|||
2617 | level = self.levels[-1] |
|
|||
2618 | self.returnvalue = level.items[level.cury].item |
|
|||
2619 | return True |
|
|||
2620 |
|
||||
2621 | def cmd_pickattr(self): |
|
|||
2622 | level = self.levels[-1] |
|
|||
2623 | attrname = level.displayattr[1] |
|
|||
2624 | if attrname is _default: |
|
|||
2625 | curses.beep() |
|
|||
2626 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2627 | return |
|
|||
2628 | attr = _getattr(level.items[level.cury].item, attrname) |
|
|||
2629 | if attr is _default: |
|
|||
2630 | curses.beep() |
|
|||
2631 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2632 | else: |
|
|||
2633 | self.returnvalue = attr |
|
|||
2634 | return True |
|
|||
2635 |
|
||||
2636 | def cmd_pickallattrs(self): |
|
|||
2637 | level = self.levels[-1] |
|
|||
2638 | attrname = level.displayattr[1] |
|
|||
2639 | if attrname is _default: |
|
|||
2640 | curses.beep() |
|
|||
2641 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2642 | return |
|
|||
2643 | result = [] |
|
|||
2644 | for cache in level.items: |
|
|||
2645 | attr = _getattr(cache.item, attrname) |
|
|||
2646 | if attr is not _default: |
|
|||
2647 | result.append(attr) |
|
|||
2648 | self.returnvalue = result |
|
|||
2649 | return True |
|
|||
2650 |
|
||||
2651 | def cmd_pickmarked(self): |
|
|||
2652 | level = self.levels[-1] |
|
|||
2653 | self.returnvalue = [cache.item for cache in level.items if cache.marked] |
|
|||
2654 | return True |
|
|||
2655 |
|
||||
2656 | def cmd_pickmarkedattr(self): |
|
|||
2657 | level = self.levels[-1] |
|
|||
2658 | attrname = level.displayattr[1] |
|
|||
2659 | if attrname is _default: |
|
|||
2660 | curses.beep() |
|
|||
2661 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2662 | return |
|
|||
2663 | result = [] |
|
|||
2664 | for cache in level.items: |
|
|||
2665 | if cache.marked: |
|
|||
2666 | attr = _getattr(cache.item, attrname) |
|
|||
2667 | if attr is not _default: |
|
|||
2668 | result.append(attr) |
|
|||
2669 | self.returnvalue = result |
|
|||
2670 | return True |
|
|||
2671 |
|
||||
2672 | def cmd_markrange(self): |
|
|||
2673 | level = self.levels[-1] |
|
|||
2674 | self.report("markrange") |
|
|||
2675 | start = None |
|
|||
2676 | if level.items: |
|
|||
2677 | for i in xrange(level.cury, -1, -1): |
|
|||
2678 | if level.items[i].marked: |
|
|||
2679 | start = i |
|
|||
2680 | break |
|
|||
2681 | if start is None: |
|
|||
2682 | self.report(CommandError("no mark before cursor")) |
|
|||
2683 | curses.beep() |
|
|||
2684 | else: |
|
|||
2685 | for i in xrange(start, level.cury+1): |
|
|||
2686 | cache = level.items[i] |
|
|||
2687 | if not cache.marked: |
|
|||
2688 | cache.marked = True |
|
|||
2689 | level.marked += 1 |
|
|||
2690 |
|
||||
2691 | def cmd_enterdefault(self): |
|
|||
2692 | level = self.levels[-1] |
|
|||
2693 | try: |
|
|||
2694 | item = level.items[level.cury].item |
|
|||
2695 | except IndexError: |
|
|||
2696 | self.report(CommandError("No object")) |
|
|||
2697 | curses.beep() |
|
|||
2698 | else: |
|
|||
2699 | self.report("entering object (default mode)...") |
|
|||
2700 | self.enter(item, "default") |
|
|||
2701 |
|
||||
2702 | def cmd_leave(self): |
|
|||
2703 | self.report("leave") |
|
|||
2704 | if len(self.levels) > 1: |
|
|||
2705 | self._calcheaderlines(len(self.levels)-1) |
|
|||
2706 | self.levels.pop(-1) |
|
|||
2707 | else: |
|
|||
2708 | self.report(CommandError("This is the last level")) |
|
|||
2709 | curses.beep() |
|
|||
2710 |
|
||||
2711 | def cmd_enter(self): |
|
|||
2712 | level = self.levels[-1] |
|
|||
2713 | try: |
|
|||
2714 | item = level.items[level.cury].item |
|
|||
2715 | except IndexError: |
|
|||
2716 | self.report(CommandError("No object")) |
|
|||
2717 | curses.beep() |
|
|||
2718 | else: |
|
|||
2719 | self.report("entering object...") |
|
|||
2720 | self.enter(item, None) |
|
|||
2721 |
|
||||
2722 | def cmd_enterattr(self): |
|
|||
2723 | level = self.levels[-1] |
|
|||
2724 | attrname = level.displayattr[1] |
|
|||
2725 | if attrname is _default: |
|
|||
2726 | curses.beep() |
|
|||
2727 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2728 | return |
|
|||
2729 | try: |
|
|||
2730 | item = level.items[level.cury].item |
|
|||
2731 | except IndexError: |
|
|||
2732 | self.report(CommandError("No object")) |
|
|||
2733 | curses.beep() |
|
|||
2734 | else: |
|
|||
2735 | attr = _getattr(item, attrname) |
|
|||
2736 | if attr is _default: |
|
|||
2737 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2738 | else: |
|
|||
2739 | self.report("entering object attribute %s..." % _attrname(attrname)) |
|
|||
2740 | self.enter(attr, None) |
|
|||
2741 |
|
||||
2742 | def cmd_detail(self): |
|
|||
2743 | level = self.levels[-1] |
|
|||
2744 | try: |
|
|||
2745 | item = level.items[level.cury].item |
|
|||
2746 | except IndexError: |
|
|||
2747 | self.report(CommandError("No object")) |
|
|||
2748 | curses.beep() |
|
|||
2749 | else: |
|
|||
2750 | self.report("entering detail view for object...") |
|
|||
2751 | self.enter(item, "detail") |
|
|||
2752 |
|
||||
2753 | def cmd_detailattr(self): |
|
|||
2754 | level = self.levels[-1] |
|
|||
2755 | attrname = level.displayattr[1] |
|
|||
2756 | if attrname is _default: |
|
|||
2757 | curses.beep() |
|
|||
2758 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2759 | return |
|
|||
2760 | try: |
|
|||
2761 | item = level.items[level.cury].item |
|
|||
2762 | except IndexError: |
|
|||
2763 | self.report(CommandError("No object")) |
|
|||
2764 | curses.beep() |
|
|||
2765 | else: |
|
|||
2766 | attr = _getattr(item, attrname) |
|
|||
2767 | if attr is _default: |
|
|||
2768 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2769 | else: |
|
|||
2770 | self.report("entering detail view for attribute...") |
|
|||
2771 | self.enter(attr, "detail") |
|
|||
2772 |
|
||||
2773 | def cmd_tooglemark(self): |
|
|||
2774 | level = self.levels[-1] |
|
|||
2775 | self.report("toggle mark") |
|
|||
2776 | try: |
|
|||
2777 | item = level.items[level.cury] |
|
|||
2778 | except IndexError: # no items? |
|
|||
2779 | pass |
|
|||
2780 | else: |
|
|||
2781 | if item.marked: |
|
|||
2782 | item.marked = False |
|
|||
2783 | level.marked -= 1 |
|
|||
2784 | else: |
|
|||
2785 | item.marked = True |
|
|||
2786 | level.marked += 1 |
|
|||
2787 |
|
||||
2788 | def cmd_sortattrasc(self): |
|
|||
2789 | level = self.levels[-1] |
|
|||
2790 | attrname = level.displayattr[1] |
|
|||
2791 | if attrname is _default: |
|
|||
2792 | curses.beep() |
|
|||
2793 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2794 | return |
|
|||
2795 | self.report("sort by %s (ascending)" % _attrname(attrname)) |
|
|||
2796 | def key(item): |
|
|||
2797 | try: |
|
|||
2798 | return _getattr(item, attrname, None) |
|
|||
2799 | except (KeyboardInterrupt, SystemExit): |
|
|||
2800 | raise |
|
|||
2801 | except Exception: |
|
|||
2802 | return None |
|
|||
2803 | level.sort(key) |
|
|||
2804 |
|
||||
2805 | def cmd_sortattrdesc(self): |
|
|||
2806 | level = self.levels[-1] |
|
|||
2807 | attrname = level.displayattr[1] |
|
|||
2808 | if attrname is _default: |
|
|||
2809 | curses.beep() |
|
|||
2810 | self.report(AttributeError(_attrname(attrname))) |
|
|||
2811 | return |
|
|||
2812 | self.report("sort by %s (descending)" % _attrname(attrname)) |
|
|||
2813 | def key(item): |
|
|||
2814 | try: |
|
|||
2815 | return _getattr(item, attrname, None) |
|
|||
2816 | except (KeyboardInterrupt, SystemExit): |
|
|||
2817 | raise |
|
|||
2818 | except Exception: |
|
|||
2819 | return None |
|
|||
2820 | level.sort(key, reverse=True) |
|
|||
2821 |
|
||||
2822 | def cmd_goto(self): |
|
|||
2823 | self.startkeyboardinput("goto") |
|
|||
2824 |
|
||||
2825 | def exe_goto(self): |
|
|||
2826 | level = self.levels[-1] |
|
|||
2827 | if self.keyboardinput: |
|
|||
2828 | level.moveto(level.curx, int(self.keyboardinput)) |
|
|||
2829 |
|
||||
2830 | def cmd_find(self): |
|
|||
2831 | self.startkeyboardinput("find") |
|
|||
2832 |
|
||||
2833 | def exe_find(self): |
|
|||
2834 | level = self.levels[-1] |
|
|||
2835 | if self.keyboardinput: |
|
|||
2836 | while True: |
|
|||
2837 | cury = level.cury |
|
|||
2838 | level.moveto(level.curx, cury+1) |
|
|||
2839 | if cury == level.cury: |
|
|||
2840 | curses.beep() |
|
|||
2841 | break |
|
|||
2842 | item = level.items[level.cury].item |
|
|||
2843 | try: |
|
|||
2844 | if eval(self.keyboardinput, globals(), _AttrNamespace(item)): |
|
|||
2845 | break |
|
|||
2846 | except (KeyboardInterrupt, SystemExit): |
|
|||
2847 | raise |
|
|||
2848 | except Exception, exc: |
|
|||
2849 | self.report(exc) |
|
|||
2850 | curses.beep() |
|
|||
2851 | break # break on error |
|
|||
2852 |
|
||||
2853 | def cmd_findbackwards(self): |
|
|||
2854 | self.startkeyboardinput("findbackwards") |
|
|||
2855 |
|
||||
2856 | def exe_findbackwards(self): |
|
|||
2857 | level = self.levels[-1] |
|
|||
2858 | if self.keyboardinput: |
|
|||
2859 | while level.cury: |
|
|||
2860 | level.moveto(level.curx, level.cury-1) |
|
|||
2861 | item = level.items[level.cury].item |
|
|||
2862 | try: |
|
|||
2863 | if eval(self.keyboardinput, globals(), _AttrNamespace(item)): |
|
|||
2864 | break |
|
|||
2865 | except (KeyboardInterrupt, SystemExit): |
|
|||
2866 | raise |
|
|||
2867 | except Exception, exc: |
|
|||
2868 | self.report(exc) |
|
|||
2869 | curses.beep() |
|
|||
2870 | break # break on error |
|
|||
2871 | else: |
|
|||
2872 | curses.beep() |
|
|||
2873 |
|
||||
2874 | def cmd_help(self): |
|
|||
2875 | """ |
|
|||
2876 | The help command |
|
|||
2877 | """ |
|
|||
2878 | for level in self.levels: |
|
|||
2879 | if isinstance(level.input, _BrowserHelp): |
|
|||
2880 | curses.beep() |
|
|||
2881 | self.report(CommandError("help already active")) |
|
|||
2882 | return |
|
|||
2883 |
|
||||
2884 | self.enter(_BrowserHelp(self), "default") |
|
|||
2885 |
|
||||
2886 | def _dodisplay(self, scr): |
|
|||
2887 | """ |
|
|||
2888 | This method is the workhorse of the browser. It handles screen |
|
|||
2889 | drawing and the keyboard. |
|
|||
2890 | """ |
|
|||
2891 | self.scr = scr |
|
|||
2892 | curses.halfdelay(1) |
|
|||
2893 | footery = 2 |
|
|||
2894 |
|
||||
2895 | keys = [] |
|
|||
2896 | for (key, cmd) in self.keymap.iteritems(): |
|
|||
2897 | if cmd == "quit": |
|
|||
2898 | keys.append("%s=%s" % (self.keylabel(key), cmd)) |
|
|||
2899 | for (key, cmd) in self.keymap.iteritems(): |
|
|||
2900 | if cmd == "help": |
|
|||
2901 | keys.append("%s=%s" % (self.keylabel(key), cmd)) |
|
|||
2902 | helpmsg = " | %s" % " ".join(keys) |
|
|||
2903 |
|
||||
2904 | scr.clear() |
|
|||
2905 | msg = "Fetching first batch of objects..." |
|
|||
2906 | (self.scrsizey, self.scrsizex) = scr.getmaxyx() |
|
|||
2907 | scr.addstr(self.scrsizey//2, (self.scrsizex-len(msg))//2, msg) |
|
|||
2908 | scr.refresh() |
|
|||
2909 |
|
||||
2910 | lastc = -1 |
|
|||
2911 |
|
||||
2912 | self.levels = [] |
|
|||
2913 | # enter the first level |
|
|||
2914 | self.enter(self.input, xiter(self.input, "default"), *self.attrs) |
|
|||
2915 |
|
||||
2916 | self._calcheaderlines(None) |
|
|||
2917 |
|
||||
2918 | while True: |
|
|||
2919 | level = self.levels[-1] |
|
|||
2920 | (self.scrsizey, self.scrsizex) = scr.getmaxyx() |
|
|||
2921 | level.mainsizey = self.scrsizey-1-self._headerlines-footery |
|
|||
2922 |
|
||||
2923 | # Paint object header |
|
|||
2924 | for i in xrange(self._firstheaderline, self._firstheaderline+self._headerlines): |
|
|||
2925 | lv = self.levels[i] |
|
|||
2926 | posx = 0 |
|
|||
2927 | posy = i-self._firstheaderline |
|
|||
2928 | endx = self.scrsizex |
|
|||
2929 | if i: # not the first level |
|
|||
2930 | msg = " (%d/%d" % (self.levels[i-1].cury, len(self.levels[i-1].items)) |
|
|||
2931 | if not self.levels[i-1].exhausted: |
|
|||
2932 | msg += "+" |
|
|||
2933 | msg += ") " |
|
|||
2934 | endx -= len(msg)+1 |
|
|||
2935 | posx += self.addstr(posy, posx, 0, endx, " ibrowse #%d: " % i, self.style_objheadertext) |
|
|||
2936 | for (style, text) in lv.header: |
|
|||
2937 | posx += self.addstr(posy, posx, 0, endx, text, self.style_objheaderobject) |
|
|||
2938 | if posx >= endx: |
|
|||
2939 | break |
|
|||
2940 | if i: |
|
|||
2941 | posx += self.addstr(posy, posx, 0, self.scrsizex, msg, self.style_objheadernumber) |
|
|||
2942 | posx += self.addchr(posy, posx, 0, self.scrsizex, " ", self.scrsizex-posx, self.style_objheadernumber) |
|
|||
2943 |
|
||||
2944 | if not level.items: |
|
|||
2945 | self.addchr(self._headerlines, 0, 0, self.scrsizex, " ", self.scrsizex, self.style_colheader) |
|
|||
2946 | self.addstr(self._headerlines+1, 0, 0, self.scrsizex, " <empty>", style_error) |
|
|||
2947 | scr.clrtobot() |
|
|||
2948 | else: |
|
|||
2949 | # Paint column headers |
|
|||
2950 | scr.move(self._headerlines, 0) |
|
|||
2951 | scr.addstr(" %*s " % (level.numbersizex, "#"), self.getstyle(self.style_colheader)) |
|
|||
2952 | scr.addstr(self.headersepchar, self.getstyle(self.style_colheadersep)) |
|
|||
2953 | begx = level.numbersizex+3 |
|
|||
2954 | posx = begx-level.datastartx |
|
|||
2955 | for attrname in level.displayattrs: |
|
|||
2956 | strattrname = _attrname(attrname) |
|
|||
2957 | cwidth = level.colwidths[attrname] |
|
|||
2958 | header = strattrname.ljust(cwidth) |
|
|||
2959 | if attrname == level.displayattr[1]: |
|
|||
2960 | style = self.style_colheaderhere |
|
|||
2961 | else: |
|
|||
2962 | style = self.style_colheader |
|
|||
2963 | posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, header, style) |
|
|||
2964 | posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, self.headersepchar, self.style_colheadersep) |
|
|||
2965 | if posx >= self.scrsizex: |
|
|||
2966 | break |
|
|||
2967 | else: |
|
|||
2968 | scr.addstr(" "*(self.scrsizex-posx), self.getstyle(self.style_colheader)) |
|
|||
2969 |
|
||||
2970 | # Paint rows |
|
|||
2971 | posy = self._headerlines+1+level.datastarty |
|
|||
2972 | for i in xrange(level.datastarty, min(level.datastarty+level.mainsizey, len(level.items))): |
|
|||
2973 | cache = level.items[i] |
|
|||
2974 | if i == level.cury: |
|
|||
2975 | style = self.style_numberhere |
|
|||
2976 | else: |
|
|||
2977 | style = self.style_number |
|
|||
2978 |
|
||||
2979 | posy = self._headerlines+1+i-level.datastarty |
|
|||
2980 | posx = begx-level.datastartx |
|
|||
2981 |
|
||||
2982 | scr.move(posy, 0) |
|
|||
2983 | scr.addstr(" %*d%s" % (level.numbersizex, i, " !"[cache.marked]), self.getstyle(style)) |
|
|||
2984 | scr.addstr(self.headersepchar, self.getstyle(self.style_sep)) |
|
|||
2985 |
|
||||
2986 | for attrname in level.displayattrs: |
|
|||
2987 | cwidth = level.colwidths[attrname] |
|
|||
2988 | try: |
|
|||
2989 | (align, length, parts) = level.displayrows[i-level.datastarty][attrname] |
|
|||
2990 | except KeyError: |
|
|||
2991 | align = 2 |
|
|||
2992 | style = style_nodata |
|
|||
2993 | padstyle = self.style_datapad |
|
|||
2994 | sepstyle = self.style_sep |
|
|||
2995 | if i == level.cury: |
|
|||
2996 | padstyle = self.getstylehere(padstyle) |
|
|||
2997 | sepstyle = self.getstylehere(sepstyle) |
|
|||
2998 | if align == 2: |
|
|||
2999 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.nodatachar, cwidth, style) |
|
|||
3000 | else: |
|
|||
3001 | if align == 1: |
|
|||
3002 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle) |
|
|||
3003 | elif align == 0: |
|
|||
3004 | pad1 = (cwidth-length)//2 |
|
|||
3005 | pad2 = cwidth-length-len(pad1) |
|
|||
3006 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad1, padstyle) |
|
|||
3007 | for (style, text) in parts: |
|
|||
3008 | if i == level.cury: |
|
|||
3009 | style = self.getstylehere(style) |
|
|||
3010 | posx += self.addstr(posy, posx, begx, self.scrsizex, text, style) |
|
|||
3011 | if posx >= self.scrsizex: |
|
|||
3012 | break |
|
|||
3013 | if align == -1: |
|
|||
3014 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle) |
|
|||
3015 | elif align == 0: |
|
|||
3016 | posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad2, padstyle) |
|
|||
3017 | posx += self.addstr(posy, posx, begx, self.scrsizex, self.datasepchar, sepstyle) |
|
|||
3018 | else: |
|
|||
3019 | scr.clrtoeol() |
|
|||
3020 |
|
||||
3021 | # Add blank row headers for the rest of the screen |
|
|||
3022 | for posy in xrange(posy+1, self.scrsizey-2): |
|
|||
3023 | scr.addstr(posy, 0, " " * (level.numbersizex+2), self.getstyle(self.style_colheader)) |
|
|||
3024 | scr.clrtoeol() |
|
|||
3025 |
|
||||
3026 | posy = self.scrsizey-footery |
|
|||
3027 | # Display footer |
|
|||
3028 | scr.addstr(posy, 0, " "*self.scrsizex, self.getstyle(self.style_footer)) |
|
|||
3029 |
|
||||
3030 | if level.exhausted: |
|
|||
3031 | flag = "" |
|
|||
3032 | else: |
|
|||
3033 | flag = "+" |
|
|||
3034 |
|
||||
3035 | endx = self.scrsizex-len(helpmsg)-1 |
|
|||
3036 | scr.addstr(posy, endx, helpmsg, self.getstyle(self.style_footer)) |
|
|||
3037 |
|
||||
3038 | posx = 0 |
|
|||
3039 | msg = " %d%s objects (%d marked): " % (len(level.items), flag, level.marked) |
|
|||
3040 | posx += self.addstr(posy, posx, 0, endx, msg, self.style_footer) |
|
|||
3041 | try: |
|
|||
3042 | item = level.items[level.cury].item |
|
|||
3043 | except IndexError: # empty |
|
|||
3044 | pass |
|
|||
3045 | else: |
|
|||
3046 | for (nostyle, text) in xrepr(item, "footer"): |
|
|||
3047 | if not isinstance(nostyle, int): |
|
|||
3048 | posx += self.addstr(posy, posx, 0, endx, text, self.style_footer) |
|
|||
3049 | if posx >= endx: |
|
|||
3050 | break |
|
|||
3051 |
|
||||
3052 | attrstyle = [(astyle.style_default, "no attribute")] |
|
|||
3053 | attrname = level.displayattr[1] |
|
|||
3054 | if attrname is not _default and attrname is not None: |
|
|||
3055 | posx += self.addstr(posy, posx, 0, endx, " | ", self.style_footer) |
|
|||
3056 | posx += self.addstr(posy, posx, 0, endx, _attrname(attrname), self.style_footer) |
|
|||
3057 | posx += self.addstr(posy, posx, 0, endx, ": ", self.style_footer) |
|
|||
3058 | try: |
|
|||
3059 | attr = _getattr(item, attrname) |
|
|||
3060 | except (SystemExit, KeyboardInterrupt): |
|
|||
3061 | raise |
|
|||
3062 | except Exception, exc: |
|
|||
3063 | attr = exc |
|
|||
3064 | if attr is not _default: |
|
|||
3065 | attrstyle = xrepr(attr, "footer") |
|
|||
3066 | for (nostyle, text) in attrstyle: |
|
|||
3067 | if not isinstance(nostyle, int): |
|
|||
3068 | posx += self.addstr(posy, posx, 0, endx, text, self.style_footer) |
|
|||
3069 | if posx >= endx: |
|
|||
3070 | break |
|
|||
3071 |
|
||||
3072 | try: |
|
|||
3073 | # Display input prompt |
|
|||
3074 | if self.mode in self.prompts: |
|
|||
3075 | scr.addstr(self.scrsizey-1, 0, |
|
|||
3076 | self.prompts[self.mode] + self.keyboardinput, |
|
|||
3077 | self.getstyle(style_default)) |
|
|||
3078 | # Display report |
|
|||
3079 | else: |
|
|||
3080 | if self._report is not None: |
|
|||
3081 | if isinstance(self._report, Exception): |
|
|||
3082 | style = self.getstyle(style_error) |
|
|||
3083 | if self._report.__class__.__module__ == "exceptions": |
|
|||
3084 | msg = "%s: %s" % \ |
|
|||
3085 | (self._report.__class__.__name__, self._report) |
|
|||
3086 | else: |
|
|||
3087 | msg = "%s.%s: %s" % \ |
|
|||
3088 | (self._report.__class__.__module__, |
|
|||
3089 | self._report.__class__.__name__, self._report) |
|
|||
3090 | else: |
|
|||
3091 | style = self.getstyle(self.style_report) |
|
|||
3092 | msg = self._report |
|
|||
3093 | scr.addstr(self.scrsizey-1, 0, msg[:self.scrsizex], style) |
|
|||
3094 | self._report = None |
|
|||
3095 | else: |
|
|||
3096 | scr.move(self.scrsizey-1, 0) |
|
|||
3097 | except curses.error: |
|
|||
3098 | # Protect against error from writing to the last line |
|
|||
3099 | pass |
|
|||
3100 | scr.clrtoeol() |
|
|||
3101 |
|
||||
3102 | # Position cursor |
|
|||
3103 | if self.mode in self.prompts: |
|
|||
3104 | scr.move(self.scrsizey-1, len(self.prompts[self.mode])+self.cursorpos) |
|
|||
3105 | else: |
|
|||
3106 | scr.move( |
|
|||
3107 | 1+self._headerlines+level.cury-level.datastarty, |
|
|||
3108 | level.numbersizex+3+level.curx-level.datastartx |
|
|||
3109 | ) |
|
|||
3110 | scr.refresh() |
|
|||
3111 |
|
||||
3112 | # Check keyboard |
|
|||
3113 | while True: |
|
|||
3114 | c = scr.getch() |
|
|||
3115 | if self.mode in self.prompts: |
|
|||
3116 | if c in (8, 127, curses.KEY_BACKSPACE): |
|
|||
3117 | if self.cursorpos: |
|
|||
3118 | self.keyboardinput = self.keyboardinput[:self.cursorpos-1] + self.keyboardinput[self.cursorpos:] |
|
|||
3119 | self.cursorpos -= 1 |
|
|||
3120 | break |
|
|||
3121 | else: |
|
|||
3122 | curses.beep() |
|
|||
3123 | elif c == curses.KEY_LEFT: |
|
|||
3124 | if self.cursorpos: |
|
|||
3125 | self.cursorpos -= 1 |
|
|||
3126 | break |
|
|||
3127 | else: |
|
|||
3128 | curses.beep() |
|
|||
3129 | elif c == curses.KEY_RIGHT: |
|
|||
3130 | if self.cursorpos < len(self.keyboardinput): |
|
|||
3131 | self.cursorpos += 1 |
|
|||
3132 | break |
|
|||
3133 | else: |
|
1782 | else: | |
3134 | curses.beep() |
|
|||
3135 | elif c in (curses.KEY_UP, curses.KEY_DOWN): # cancel |
|
|||
3136 | self.mode = "default" |
|
|||
3137 | break |
|
|||
3138 | elif c == ord("\n"): |
|
|||
3139 | self.executekeyboardinput(self.mode) |
|
|||
3140 | break |
|
|||
3141 | elif c != -1: |
|
|||
3142 | try: |
|
|||
3143 | c = chr(c) |
|
|||
3144 | except ValueError: |
|
|||
3145 | curses.beep() |
|
|||
3146 | else: |
|
|||
3147 | if (self.mode == "goto" and not "0" <= c <= "9"): |
|
|||
3148 | curses.beep() |
|
|||
3149 | else: |
|
|||
3150 | self.keyboardinput = self.keyboardinput[:self.cursorpos] + c + self.keyboardinput[self.cursorpos:] |
|
|||
3151 | self.cursorpos += 1 |
|
|||
3152 | break # Redisplay |
|
|||
3153 | else: |
|
|||
3154 | # if no key is pressed slow down and beep again |
|
|||
3155 | if c == -1: |
|
|||
3156 | self.stepx = 1. |
|
|||
3157 | self.stepy = 1. |
|
|||
3158 | self._dobeep = True |
|
|||
3159 | else: |
|
|||
3160 | # if a different key was pressed slow down and beep too |
|
|||
3161 | if c != lastc: |
|
|||
3162 | lastc = c |
|
|||
3163 | self.stepx = 1. |
|
|||
3164 | self.stepy = 1. |
|
|||
3165 | self._dobeep = True |
|
|||
3166 | cmdname = self.keymap.get(c, None) |
|
|||
3167 | if cmdname is None: |
|
|||
3168 | self.report( |
|
|||
3169 | UnassignedKeyError("Unassigned key %s" % |
|
|||
3170 | self.keylabel(c))) |
|
|||
3171 | else: |
|
|||
3172 | cmdfunc = getattr(self, "cmd_%s" % cmdname, None) |
|
|||
3173 | if cmdfunc is None: |
|
|||
3174 | self.report( |
|
|||
3175 | UnknownCommandError("Unknown command %r" % |
|
|||
3176 | (cmdname,))) |
|
|||
3177 | elif cmdfunc(): |
|
|||
3178 | returnvalue = self.returnvalue |
|
|||
3179 | self.returnvalue = None |
|
|||
3180 | return returnvalue |
|
|||
3181 | self.stepx = self.nextstepx(self.stepx) |
|
|||
3182 | self.stepy = self.nextstepy(self.stepy) |
|
|||
3183 | curses.flushinp() # get rid of type ahead |
|
|||
3184 | break # Redisplay |
|
|||
3185 | self.scr = None |
|
|||
3186 |
|
||||
3187 | def display(self): |
|
|||
3188 | return curses.wrapper(self._dodisplay) |
|
|||
3189 |
|
||||
3190 | defaultdisplay = ibrowse |
|
1783 | defaultdisplay = ibrowse | |
3191 | __all__.append("ibrowse") |
|
1784 | __all__.append("ibrowse") | |
3192 | else: |
|
|||
3193 | # No curses (probably Windows) => use ``idump`` as the default display. |
|
|||
3194 | defaultdisplay = idump |
|
|||
3195 |
|
1785 | |||
3196 |
|
1786 | |||
3197 | # If we're running under IPython, install an IPython displayhook that |
|
1787 | # If we're running under IPython, install an IPython displayhook that |
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