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@@ -1,412 +1,412 | |||||
1 | # -*- coding: utf-8 -*- |
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1 | # -*- coding: utf-8 -*- | |
2 | """Classes for handling input/output prompts.""" |
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2 | """Classes for handling input/output prompts.""" | |
3 |
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3 | |||
4 | # Copyright (c) 2001-2007 Fernando Perez <fperez@colorado.edu> |
|
4 | # Copyright (c) 2001-2007 Fernando Perez <fperez@colorado.edu> | |
5 | # Copyright (c) IPython Development Team. |
|
5 | # Copyright (c) IPython Development Team. | |
6 | # Distributed under the terms of the Modified BSD License. |
|
6 | # Distributed under the terms of the Modified BSD License. | |
7 |
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7 | |||
8 | import os |
|
8 | import os | |
9 | import re |
|
9 | import re | |
10 | import socket |
|
10 | import socket | |
11 | import sys |
|
11 | import sys | |
12 | import time |
|
12 | import time | |
13 |
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13 | |||
14 | from string import Formatter |
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14 | from string import Formatter | |
15 |
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15 | |||
16 | from traitlets.config.configurable import Configurable |
|
16 | from traitlets.config.configurable import Configurable | |
17 | from IPython.core import release |
|
17 | from IPython.core import release | |
18 | from IPython.utils import coloransi, py3compat |
|
18 | from IPython.utils import coloransi, py3compat | |
19 | from traitlets import Unicode, Instance, Dict, Bool, Int, observe, default |
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19 | from traitlets import Unicode, Instance, Dict, Bool, Int, observe, default | |
20 |
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20 | |||
21 | from IPython.utils.PyColorize import LightBGColors, LinuxColors, NoColor |
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21 | from IPython.utils.PyColorize import LightBGColors, LinuxColors, NoColor | |
22 |
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22 | |||
23 | #----------------------------------------------------------------------------- |
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23 | #----------------------------------------------------------------------------- | |
24 | # Color schemes for prompts |
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24 | # Color schemes for prompts | |
25 | #----------------------------------------------------------------------------- |
|
25 | #----------------------------------------------------------------------------- | |
26 |
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26 | |||
27 | InputColors = coloransi.InputTermColors # just a shorthand |
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27 | InputColors = coloransi.InputTermColors # just a shorthand | |
28 | Colors = coloransi.TermColors # just a shorthand |
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28 | Colors = coloransi.TermColors # just a shorthand | |
29 |
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29 | |||
30 | color_lists = dict(normal=Colors(), inp=InputColors(), nocolor=coloransi.NoColors()) |
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30 | color_lists = dict(normal=Colors(), inp=InputColors(), nocolor=coloransi.NoColors()) | |
31 |
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31 | |||
32 | #----------------------------------------------------------------------------- |
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32 | #----------------------------------------------------------------------------- | |
33 | # Utilities |
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33 | # Utilities | |
34 | #----------------------------------------------------------------------------- |
|
34 | #----------------------------------------------------------------------------- | |
35 |
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35 | |||
36 | class LazyEvaluate(object): |
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36 | class LazyEvaluate(object): | |
37 | """This is used for formatting strings with values that need to be updated |
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37 | """This is used for formatting strings with values that need to be updated | |
38 | at that time, such as the current time or working directory.""" |
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38 | at that time, such as the current time or working directory.""" | |
39 | def __init__(self, func, *args, **kwargs): |
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39 | def __init__(self, func, *args, **kwargs): | |
40 | self.func = func |
|
40 | self.func = func | |
41 | self.args = args |
|
41 | self.args = args | |
42 | self.kwargs = kwargs |
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42 | self.kwargs = kwargs | |
43 |
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43 | |||
44 | def __call__(self, **kwargs): |
|
44 | def __call__(self, **kwargs): | |
45 | self.kwargs.update(kwargs) |
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45 | self.kwargs.update(kwargs) | |
46 | return self.func(*self.args, **self.kwargs) |
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46 | return self.func(*self.args, **self.kwargs) | |
47 |
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47 | |||
48 | def __str__(self): |
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48 | def __str__(self): | |
49 | return str(self()) |
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49 | return str(self()) | |
50 |
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50 | |||
51 | def __unicode__(self): |
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51 | def __unicode__(self): | |
52 | return py3compat.unicode_type(self()) |
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52 | return py3compat.unicode_type(self()) | |
53 |
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53 | |||
54 | def __format__(self, format_spec): |
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54 | def __format__(self, format_spec): | |
55 | return format(self(), format_spec) |
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55 | return format(self(), format_spec) | |
56 |
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56 | |||
57 | def multiple_replace(dict, text): |
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57 | def multiple_replace(dict, text): | |
58 | """ Replace in 'text' all occurrences of any key in the given |
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58 | """ Replace in 'text' all occurrences of any key in the given | |
59 | dictionary by its corresponding value. Returns the new string.""" |
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59 | dictionary by its corresponding value. Returns the new string.""" | |
60 |
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60 | |||
61 | # Function by Xavier Defrang, originally found at: |
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61 | # Function by Xavier Defrang, originally found at: | |
62 | # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81330 |
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62 | # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81330 | |
63 |
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63 | |||
64 | # Create a regular expression from the dictionary keys |
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64 | # Create a regular expression from the dictionary keys | |
65 | regex = re.compile("(%s)" % "|".join(map(re.escape, dict.keys()))) |
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65 | regex = re.compile("(%s)" % "|".join(map(re.escape, dict.keys()))) | |
66 | # For each match, look-up corresponding value in dictionary |
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66 | # For each match, look-up corresponding value in dictionary | |
67 | return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text) |
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67 | return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text) | |
68 |
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68 | |||
69 | #----------------------------------------------------------------------------- |
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69 | #----------------------------------------------------------------------------- | |
70 | # Special characters that can be used in prompt templates, mainly bash-like |
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70 | # Special characters that can be used in prompt templates, mainly bash-like | |
71 | #----------------------------------------------------------------------------- |
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71 | #----------------------------------------------------------------------------- | |
72 |
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72 | |||
73 | # If $HOME isn't defined (Windows), make it an absurd string so that it can |
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73 | # If $HOME isn't defined (Windows), make it an absurd string so that it can | |
74 | # never be expanded out into '~'. Basically anything which can never be a |
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74 | # never be expanded out into '~'. Basically anything which can never be a | |
75 | # reasonable directory name will do, we just want the $HOME -> '~' operation |
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75 | # reasonable directory name will do, we just want the $HOME -> '~' operation | |
76 | # to become a no-op. We pre-compute $HOME here so it's not done on every |
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76 | # to become a no-op. We pre-compute $HOME here so it's not done on every | |
77 | # prompt call. |
|
77 | # prompt call. | |
78 |
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78 | |||
79 | # FIXME: |
|
79 | # FIXME: | |
80 |
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80 | |||
81 | # - This should be turned into a class which does proper namespace management, |
|
81 | # - This should be turned into a class which does proper namespace management, | |
82 | # since the prompt specials need to be evaluated in a certain namespace. |
|
82 | # since the prompt specials need to be evaluated in a certain namespace. | |
83 | # Currently it's just globals, which need to be managed manually by code |
|
83 | # Currently it's just globals, which need to be managed manually by code | |
84 | # below. |
|
84 | # below. | |
85 |
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85 | |||
86 | # - I also need to split up the color schemes from the prompt specials |
|
86 | # - I also need to split up the color schemes from the prompt specials | |
87 | # somehow. I don't have a clean design for that quite yet. |
|
87 | # somehow. I don't have a clean design for that quite yet. | |
88 |
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88 | |||
89 | HOME = py3compat.str_to_unicode(os.environ.get("HOME","//////:::::ZZZZZ,,,~~~")) |
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89 | HOME = py3compat.str_to_unicode(os.environ.get("HOME","//////:::::ZZZZZ,,,~~~")) | |
90 |
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90 | |||
91 | # This is needed on FreeBSD, and maybe other systems which symlink /home to |
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91 | # This is needed on FreeBSD, and maybe other systems which symlink /home to | |
92 | # /usr/home, but retain the $HOME variable as pointing to /home |
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92 | # /usr/home, but retain the $HOME variable as pointing to /home | |
93 | HOME = os.path.realpath(HOME) |
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93 | HOME = os.path.realpath(HOME) | |
94 |
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94 | |||
95 | # We precompute a few more strings here for the prompt_specials, which are |
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95 | # We precompute a few more strings here for the prompt_specials, which are | |
96 | # fixed once ipython starts. This reduces the runtime overhead of computing |
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96 | # fixed once ipython starts. This reduces the runtime overhead of computing | |
97 | # prompt strings. |
|
97 | # prompt strings. | |
98 | USER = py3compat.str_to_unicode(os.environ.get("USER",'')) |
|
98 | USER = py3compat.str_to_unicode(os.environ.get("USER",'')) | |
99 | HOSTNAME = py3compat.str_to_unicode(socket.gethostname()) |
|
99 | HOSTNAME = py3compat.str_to_unicode(socket.gethostname()) | |
100 | HOSTNAME_SHORT = HOSTNAME.split(".")[0] |
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100 | HOSTNAME_SHORT = HOSTNAME.split(".")[0] | |
101 |
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101 | |||
102 | # IronPython doesn't currently have os.getuid() even if |
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102 | # IronPython doesn't currently have os.getuid() even if | |
103 | # os.name == 'posix'; 2/8/2014 |
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103 | # os.name == 'posix'; 2/8/2014 | |
104 | ROOT_SYMBOL = "#" if (os.name=='nt' or sys.platform=='cli' or os.getuid()==0) else "$" |
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104 | ROOT_SYMBOL = "#" if (os.name=='nt' or sys.platform=='cli' or os.getuid()==0) else "$" | |
105 |
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105 | |||
106 | prompt_abbreviations = { |
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106 | prompt_abbreviations = { | |
107 | # Prompt/history count |
|
107 | # Prompt/history count | |
108 | '%n' : '{color.number}' '{count}' '{color.prompt}', |
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108 | '%n' : '{color.number}' '{count}' '{color.prompt}', | |
109 | r'\#': '{color.number}' '{count}' '{color.prompt}', |
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109 | r'\#': '{color.number}' '{count}' '{color.prompt}', | |
110 | # Just the prompt counter number, WITHOUT any coloring wrappers, so users |
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110 | # Just the prompt counter number, WITHOUT any coloring wrappers, so users | |
111 | # can get numbers displayed in whatever color they want. |
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111 | # can get numbers displayed in whatever color they want. | |
112 | r'\N': '{count}', |
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112 | r'\N': '{count}', | |
113 |
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113 | |||
114 | # Prompt/history count, with the actual digits replaced by dots or |
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114 | # Prompt/history count, with the actual digits replaced by dots or | |
115 | # spaces. Used mainly in continuation prompts (prompt_in2). |
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115 | # spaces. Used mainly in continuation prompts (prompt_in2). | |
116 | r'\D': '{dots}', |
|
116 | r'\D': '{dots}', | |
117 | r'\S': '{spaces}', |
|
117 | r'\S': '{spaces}', | |
118 |
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118 | |||
119 | # Current time |
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119 | # Current time | |
120 | r'\T' : '{time}', |
|
120 | r'\T' : '{time}', | |
121 | # Current working directory |
|
121 | # Current working directory | |
122 | r'\w': '{cwd}', |
|
122 | r'\w': '{cwd}', | |
123 | # Basename of current working directory. |
|
123 | # Basename of current working directory. | |
124 | # (use os.sep to make this portable across OSes) |
|
124 | # (use os.sep to make this portable across OSes) | |
125 | r'\W' : '{cwd_last}', |
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125 | r'\W' : '{cwd_last}', | |
126 | # These X<N> are an extension to the normal bash prompts. They return |
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126 | # These X<N> are an extension to the normal bash prompts. They return | |
127 | # N terms of the path, after replacing $HOME with '~' |
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127 | # N terms of the path, after replacing $HOME with '~' | |
128 | r'\X0': '{cwd_x[0]}', |
|
128 | r'\X0': '{cwd_x[0]}', | |
129 | r'\X1': '{cwd_x[1]}', |
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129 | r'\X1': '{cwd_x[1]}', | |
130 | r'\X2': '{cwd_x[2]}', |
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130 | r'\X2': '{cwd_x[2]}', | |
131 | r'\X3': '{cwd_x[3]}', |
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131 | r'\X3': '{cwd_x[3]}', | |
132 | r'\X4': '{cwd_x[4]}', |
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132 | r'\X4': '{cwd_x[4]}', | |
133 | r'\X5': '{cwd_x[5]}', |
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133 | r'\X5': '{cwd_x[5]}', | |
134 | # Y<N> are similar to X<N>, but they show '~' if it's the directory |
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134 | # Y<N> are similar to X<N>, but they show '~' if it's the directory | |
135 | # N+1 in the list. Somewhat like %cN in tcsh. |
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135 | # N+1 in the list. Somewhat like %cN in tcsh. | |
136 | r'\Y0': '{cwd_y[0]}', |
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136 | r'\Y0': '{cwd_y[0]}', | |
137 | r'\Y1': '{cwd_y[1]}', |
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137 | r'\Y1': '{cwd_y[1]}', | |
138 | r'\Y2': '{cwd_y[2]}', |
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138 | r'\Y2': '{cwd_y[2]}', | |
139 | r'\Y3': '{cwd_y[3]}', |
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139 | r'\Y3': '{cwd_y[3]}', | |
140 | r'\Y4': '{cwd_y[4]}', |
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140 | r'\Y4': '{cwd_y[4]}', | |
141 | r'\Y5': '{cwd_y[5]}', |
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141 | r'\Y5': '{cwd_y[5]}', | |
142 | # Hostname up to first . |
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142 | # Hostname up to first . | |
143 | r'\h': HOSTNAME_SHORT, |
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143 | r'\h': HOSTNAME_SHORT, | |
144 | # Full hostname |
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144 | # Full hostname | |
145 | r'\H': HOSTNAME, |
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145 | r'\H': HOSTNAME, | |
146 | # Username of current user |
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146 | # Username of current user | |
147 | r'\u': USER, |
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147 | r'\u': USER, | |
148 | # Escaped '\' |
|
148 | # Escaped '\' | |
149 | '\\\\': '\\', |
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149 | '\\\\': '\\', | |
150 | # Newline |
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150 | # Newline | |
151 | r'\n': '\n', |
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151 | r'\n': '\n', | |
152 | # Carriage return |
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152 | # Carriage return | |
153 | r'\r': '\r', |
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153 | r'\r': '\r', | |
154 | # Release version |
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154 | # Release version | |
155 | r'\v': release.version, |
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155 | r'\v': release.version, | |
156 | # Root symbol ($ or #) |
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156 | # Root symbol ($ or #) | |
157 | r'\$': ROOT_SYMBOL, |
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157 | r'\$': ROOT_SYMBOL, | |
158 | } |
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158 | } | |
159 |
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159 | |||
160 | #----------------------------------------------------------------------------- |
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160 | #----------------------------------------------------------------------------- | |
161 | # More utilities |
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161 | # More utilities | |
162 | #----------------------------------------------------------------------------- |
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162 | #----------------------------------------------------------------------------- | |
163 |
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163 | |||
164 | def cwd_filt(depth): |
|
164 | def cwd_filt(depth): | |
165 | """Return the last depth elements of the current working directory. |
|
165 | """Return the last depth elements of the current working directory. | |
166 |
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166 | |||
167 | $HOME is always replaced with '~'. |
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167 | $HOME is always replaced with '~'. | |
168 | If depth==0, the full path is returned.""" |
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168 | If depth==0, the full path is returned.""" | |
169 |
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169 | |||
170 | cwd = py3compat.getcwd().replace(HOME,"~") |
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170 | cwd = py3compat.getcwd().replace(HOME,"~") | |
171 | out = os.sep.join(cwd.split(os.sep)[-depth:]) |
|
171 | out = os.sep.join(cwd.split(os.sep)[-depth:]) | |
172 | return out or os.sep |
|
172 | return out or os.sep | |
173 |
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173 | |||
174 | def cwd_filt2(depth): |
|
174 | def cwd_filt2(depth): | |
175 | """Return the last depth elements of the current working directory. |
|
175 | """Return the last depth elements of the current working directory. | |
176 |
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176 | |||
177 | $HOME is always replaced with '~'. |
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177 | $HOME is always replaced with '~'. | |
178 | If depth==0, the full path is returned.""" |
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178 | If depth==0, the full path is returned.""" | |
179 |
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179 | |||
180 | full_cwd = py3compat.getcwd() |
|
180 | full_cwd = py3compat.getcwd() | |
181 | cwd = full_cwd.replace(HOME,"~").split(os.sep) |
|
181 | cwd = full_cwd.replace(HOME,"~").split(os.sep) | |
182 | if '~' in cwd and len(cwd) == depth+1: |
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182 | if '~' in cwd and len(cwd) == depth+1: | |
183 | depth += 1 |
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183 | depth += 1 | |
184 | drivepart = '' |
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184 | drivepart = '' | |
185 | if sys.platform == 'win32' and len(cwd) > depth: |
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185 | if sys.platform == 'win32' and len(cwd) > depth: | |
186 | drivepart = os.path.splitdrive(full_cwd)[0] |
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186 | drivepart = os.path.splitdrive(full_cwd)[0] | |
187 | out = drivepart + '/'.join(cwd[-depth:]) |
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187 | out = drivepart + '/'.join(cwd[-depth:]) | |
188 |
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188 | |||
189 | return out or os.sep |
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189 | return out or os.sep | |
190 |
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190 | |||
191 | #----------------------------------------------------------------------------- |
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191 | #----------------------------------------------------------------------------- | |
192 | # Prompt classes |
|
192 | # Prompt classes | |
193 | #----------------------------------------------------------------------------- |
|
193 | #----------------------------------------------------------------------------- | |
194 |
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194 | |||
195 | lazily_evaluate = {'time': LazyEvaluate(time.strftime, "%H:%M:%S"), |
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195 | lazily_evaluate = {'time': LazyEvaluate(time.strftime, "%H:%M:%S"), | |
196 | 'cwd': LazyEvaluate(py3compat.getcwd), |
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196 | 'cwd': LazyEvaluate(py3compat.getcwd), | |
197 | 'cwd_last': LazyEvaluate(lambda: py3compat.getcwd().split(os.sep)[-1]), |
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197 | 'cwd_last': LazyEvaluate(lambda: py3compat.getcwd().split(os.sep)[-1]), | |
198 | 'cwd_x': [LazyEvaluate(lambda: py3compat.getcwd().replace(HOME,"~"))] +\ |
|
198 | 'cwd_x': [LazyEvaluate(lambda: py3compat.getcwd().replace(HOME,"~"))] +\ | |
199 | [LazyEvaluate(cwd_filt, x) for x in range(1,6)], |
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199 | [LazyEvaluate(cwd_filt, x) for x in range(1,6)], | |
200 | 'cwd_y': [LazyEvaluate(cwd_filt2, x) for x in range(6)] |
|
200 | 'cwd_y': [LazyEvaluate(cwd_filt2, x) for x in range(6)] | |
201 | } |
|
201 | } | |
202 |
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202 | |||
203 | def _lenlastline(s): |
|
203 | def _lenlastline(s): | |
204 | """Get the length of the last line. More intelligent than |
|
204 | """Get the length of the last line. More intelligent than | |
205 | len(s.splitlines()[-1]). |
|
205 | len(s.splitlines()[-1]). | |
206 | """ |
|
206 | """ | |
207 | if not s or s.endswith(('\n', '\r')): |
|
207 | if not s or s.endswith(('\n', '\r')): | |
208 | return 0 |
|
208 | return 0 | |
209 | return len(s.splitlines()[-1]) |
|
209 | return len(s.splitlines()[-1]) | |
210 |
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210 | |||
211 |
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211 | |||
212 | invisible_chars_re = re.compile('\001[^\001\002]*\002') |
|
212 | invisible_chars_re = re.compile('\001[^\001\002]*\002') | |
213 | def _invisible_characters(s): |
|
213 | def _invisible_characters(s): | |
214 | """ |
|
214 | """ | |
215 | Get the number of invisible ANSI characters in s. Invisible characters |
|
215 | Get the number of invisible ANSI characters in s. Invisible characters | |
216 | must be delimited by \001 and \002. |
|
216 | must be delimited by \001 and \002. | |
217 | """ |
|
217 | """ | |
218 | return _lenlastline(s) - _lenlastline(invisible_chars_re.sub('', s)) |
|
218 | return _lenlastline(s) - _lenlastline(invisible_chars_re.sub('', s)) | |
219 |
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219 | |||
220 | class UserNSFormatter(Formatter): |
|
220 | class UserNSFormatter(Formatter): | |
221 | """A Formatter that falls back on a shell's user_ns and __builtins__ for name resolution""" |
|
221 | """A Formatter that falls back on a shell's user_ns and __builtins__ for name resolution""" | |
222 | def __init__(self, shell): |
|
222 | def __init__(self, shell): | |
223 | self.shell = shell |
|
223 | self.shell = shell | |
224 |
|
224 | |||
225 | def get_value(self, key, args, kwargs): |
|
225 | def get_value(self, key, args, kwargs): | |
226 | # try regular formatting first: |
|
226 | # try regular formatting first: | |
227 | try: |
|
227 | try: | |
228 | return Formatter.get_value(self, key, args, kwargs) |
|
228 | return Formatter.get_value(self, key, args, kwargs) | |
229 | except Exception: |
|
229 | except Exception: | |
230 | pass |
|
230 | pass | |
231 | # next, look in user_ns and builtins: |
|
231 | # next, look in user_ns and builtins: | |
232 | for container in (self.shell.user_ns, __builtins__): |
|
232 | for container in (self.shell.user_ns, __builtins__): | |
233 | if key in container: |
|
233 | if key in container: | |
234 | return container[key] |
|
234 | return container[key] | |
235 | # nothing found, put error message in its place |
|
235 | # nothing found, put error message in its place | |
236 | return "<ERROR: '%s' not found>" % key |
|
236 | return "<ERROR: '%s' not found>" % key | |
237 |
|
237 | |||
238 |
|
238 | |||
239 | class PromptManager(Configurable): |
|
239 | class PromptManager(Configurable): | |
240 | """This is the primary interface for producing IPython's prompts.""" |
|
240 | """This is the primary interface for producing IPython's prompts.""" | |
241 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC', allow_none=True) |
|
241 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC', allow_none=True) | |
242 |
|
242 | |||
243 | color_scheme_table = Instance(coloransi.ColorSchemeTable, allow_none=True) |
|
243 | color_scheme_table = Instance(coloransi.ColorSchemeTable, allow_none=True) | |
244 | color_scheme = Unicode('Linux').tag(config=True) |
|
244 | color_scheme = Unicode('Linux').tag(config=True) | |
245 |
|
245 | |||
246 | @observe('color_scheme') |
|
246 | @observe('color_scheme') | |
247 | def _color_scheme_changed(self, change): |
|
247 | def _color_scheme_changed(self, change): | |
248 | self.color_scheme_table.set_active_scheme(change['new']) |
|
248 | self.color_scheme_table.set_active_scheme(change['new']) | |
249 | for pname in ['in', 'in2', 'out', 'rewrite']: |
|
249 | for pname in ['in', 'in2', 'out', 'rewrite']: | |
250 | # We need to recalculate the number of invisible characters |
|
250 | # We need to recalculate the number of invisible characters | |
251 | self.update_prompt(pname) |
|
251 | self.update_prompt(pname) | |
252 |
|
252 | |||
253 | lazy_evaluate_fields = Dict(help=""" |
|
253 | lazy_evaluate_fields = Dict(help=""" | |
254 | This maps field names used in the prompt templates to functions which |
|
254 | This maps field names used in the prompt templates to functions which | |
255 | will be called when the prompt is rendered. This allows us to include |
|
255 | will be called when the prompt is rendered. This allows us to include | |
256 | things like the current time in the prompts. Functions are only called |
|
256 | things like the current time in the prompts. Functions are only called | |
257 | if they are used in the prompt. |
|
257 | if they are used in the prompt. | |
258 | """) |
|
258 | """) | |
259 |
|
259 | |||
260 | in_template = Unicode('In [\\#]: ', |
|
260 | in_template = Unicode('In [\\#]: ', | |
261 | help="Input prompt. '\\#' will be transformed to the prompt number" |
|
261 | help="Input prompt. '\\#' will be transformed to the prompt number" | |
262 | ).tag(config=True) |
|
262 | ).tag(config=True) | |
263 | in2_template = Unicode(' .\\D.: ', |
|
263 | in2_template = Unicode(' .\\D.: ', | |
264 | help="Continuation prompt.").tag(config=True) |
|
264 | help="Continuation prompt.").tag(config=True) | |
265 | out_template = Unicode('Out[\\#]: ', |
|
265 | out_template = Unicode('Out[\\#]: ', | |
266 | help="Output prompt. '\\#' will be transformed to the prompt number" |
|
266 | help="Output prompt. '\\#' will be transformed to the prompt number" | |
267 | ).tag(config=True) |
|
267 | ).tag(config=True) | |
268 |
|
268 | |||
269 | @default('lazy_evaluate_fields') |
|
269 | @default('lazy_evaluate_fields') | |
270 | def _lazy_evaluate_fields_default(self): |
|
270 | def _lazy_evaluate_fields_default(self): | |
271 | return lazily_evaluate.copy() |
|
271 | return lazily_evaluate.copy() | |
272 |
|
272 | |||
273 | justify = Bool(True, help=""" |
|
273 | justify = Bool(True, help=""" | |
274 | If True (default), each prompt will be right-aligned with the |
|
274 | If True (default), each prompt will be right-aligned with the | |
275 | preceding one. |
|
275 | preceding one. | |
276 | """).tag(config=True) |
|
276 | """).tag(config=True) | |
277 |
|
277 | |||
278 | # We actually store the expanded templates here: |
|
278 | # We actually store the expanded templates here: | |
279 | templates = Dict() |
|
279 | templates = Dict() | |
280 |
|
280 | |||
281 | # The number of characters in the last prompt rendered, not including |
|
281 | # The number of characters in the last prompt rendered, not including | |
282 | # colour characters. |
|
282 | # colour characters. | |
283 | width = Int() |
|
283 | width = Int() | |
284 | txtwidth = Int() # Not including right-justification |
|
284 | txtwidth = Int() # Not including right-justification | |
285 |
|
285 | |||
286 | # The number of characters in each prompt which don't contribute to width |
|
286 | # The number of characters in each prompt which don't contribute to width | |
287 | invisible_chars = Dict() |
|
287 | invisible_chars = Dict() | |
288 |
|
288 | |||
289 | @default('invisible_chars') |
|
289 | @default('invisible_chars') | |
290 | def _invisible_chars_default(self): |
|
290 | def _invisible_chars_default(self): | |
291 | return {'in': 0, 'in2': 0, 'out': 0, 'rewrite':0} |
|
291 | return {'in': 0, 'in2': 0, 'out': 0, 'rewrite':0} | |
292 |
|
292 | |||
293 | def __init__(self, shell, **kwargs): |
|
293 | def __init__(self, shell, **kwargs): | |
294 | super(PromptManager, self).__init__(shell=shell, **kwargs) |
|
294 | super(PromptManager, self).__init__(shell=shell, **kwargs) | |
295 |
|
295 | |||
296 | # Prepare colour scheme table |
|
296 | # Prepare colour scheme table | |
297 | self.color_scheme_table = coloransi.ColorSchemeTable([NoColor, |
|
297 | self.color_scheme_table = coloransi.ColorSchemeTable([NoColor, | |
298 | LinuxColors, LightBGColors], self.color_scheme) |
|
298 | LinuxColors, LightBGColors], self.color_scheme) | |
299 |
|
299 | |||
300 | self._formatter = UserNSFormatter(shell) |
|
300 | self._formatter = UserNSFormatter(shell) | |
301 | # Prepare templates & numbers of invisible characters |
|
301 | # Prepare templates & numbers of invisible characters | |
302 | self.update_prompt('in', self.in_template) |
|
302 | self.update_prompt('in', self.in_template) | |
303 | self.update_prompt('in2', self.in2_template) |
|
303 | self.update_prompt('in2', self.in2_template) | |
304 | self.update_prompt('out', self.out_template) |
|
304 | self.update_prompt('out', self.out_template) | |
305 | self.update_prompt('rewrite') |
|
305 | self.update_prompt('rewrite') | |
306 | self.observe(self._update_prompt_trait, |
|
306 | self.observe(self._update_prompt_trait, | |
307 | names=['in_template', 'in2_template', 'out_template']) |
|
307 | names=['in_template', 'in2_template', 'out_template']) | |
308 |
|
308 | |||
309 | def update_prompt(self, name, new_template=None): |
|
309 | def update_prompt(self, name, new_template=None): | |
310 | """This is called when a prompt template is updated. It processes |
|
310 | """This is called when a prompt template is updated. It processes | |
311 | abbreviations used in the prompt template (like \#) and calculates how |
|
311 | abbreviations used in the prompt template (like \#) and calculates how | |
312 | many invisible characters (ANSI colour escapes) the resulting prompt |
|
312 | many invisible characters (ANSI colour escapes) the resulting prompt | |
313 | contains. |
|
313 | contains. | |
314 |
|
314 | |||
315 | It is also called for each prompt on changing the colour scheme. In both |
|
315 | It is also called for each prompt on changing the colour scheme. In both | |
316 | cases, traitlets should take care of calling this automatically. |
|
316 | cases, traitlets should take care of calling this automatically. | |
317 | """ |
|
317 | """ | |
318 | if new_template is not None: |
|
318 | if new_template is not None: | |
319 | self.templates[name] = multiple_replace(prompt_abbreviations, new_template) |
|
319 | self.templates[name] = multiple_replace(prompt_abbreviations, new_template) | |
320 | # We count invisible characters (colour escapes) on the last line of the |
|
320 | # We count invisible characters (colour escapes) on the last line of the | |
321 | # prompt, to calculate the width for lining up subsequent prompts. |
|
321 | # prompt, to calculate the width for lining up subsequent prompts. | |
322 | invis_chars = _invisible_characters(self._render(name, color=True)) |
|
322 | invis_chars = _invisible_characters(self._render(name, color=True)) | |
323 | self.invisible_chars[name] = invis_chars |
|
323 | self.invisible_chars[name] = invis_chars | |
324 |
|
324 | |||
325 | def _update_prompt_trait(self, changes): |
|
325 | def _update_prompt_trait(self, changes): | |
326 | traitname = changes['name'] |
|
326 | traitname = changes['name'] | |
327 | new_template = changes['new'] |
|
327 | new_template = changes['new'] | |
328 | name = traitname[:-9] # Cut off '_template' |
|
328 | name = traitname[:-9] # Cut off '_template' | |
329 | self.update_prompt(name, new_template) |
|
329 | self.update_prompt(name, new_template) | |
330 |
|
330 | |||
331 | def _render(self, name, color=True, **kwargs): |
|
331 | def _render(self, name, color=True, **kwargs): | |
332 | """Render but don't justify, or update the width or txtwidth attributes. |
|
332 | """Render but don't justify, or update the width or txtwidth attributes. | |
333 | """ |
|
333 | """ | |
334 | if name == 'rewrite': |
|
334 | if name == 'rewrite': | |
335 | return self._render_rewrite(color=color) |
|
335 | return self._render_rewrite(color=color) | |
336 |
|
336 | |||
337 | if color: |
|
337 | if color: | |
338 | scheme = self.color_scheme_table.active_colors |
|
338 | scheme = self.color_scheme_table.active_colors | |
339 | if name=='out': |
|
339 | if name=='out': | |
340 | colors = color_lists['normal'] |
|
340 | colors = color_lists['normal'] | |
341 | colors.number, colors.prompt, colors.normal = \ |
|
341 | colors.number, colors.prompt, colors.normal = \ | |
342 | scheme.out_number, scheme.out_prompt, scheme.normal |
|
342 | scheme.out_number, scheme.out_prompt, scheme.normal | |
343 | else: |
|
343 | else: | |
344 | colors = color_lists['inp'] |
|
344 | colors = color_lists['inp'] | |
345 | colors.number, colors.prompt, colors.normal = \ |
|
345 | colors.number, colors.prompt, colors.normal = \ | |
346 | scheme.in_number, scheme.in_prompt, scheme.in_normal |
|
346 | scheme.in_number, scheme.in_prompt, scheme.in_normal | |
347 | if name=='in2': |
|
347 | if name=='in2': | |
348 | colors.prompt = scheme.in_prompt2 |
|
348 | colors.prompt = scheme.in_prompt2 | |
349 | else: |
|
349 | else: | |
350 | # No color |
|
350 | # No color | |
351 | colors = color_lists['nocolor'] |
|
351 | colors = color_lists['nocolor'] | |
352 | colors.number, colors.prompt, colors.normal = '', '', '' |
|
352 | colors.number, colors.prompt, colors.normal = '', '', '' | |
353 |
|
353 | |||
354 | count = self.shell.execution_count # Shorthand |
|
354 | count = self.shell.execution_count # Shorthand | |
355 | # Build the dictionary to be passed to string formatting |
|
355 | # Build the dictionary to be passed to string formatting | |
356 | fmtargs = dict(color=colors, count=count, |
|
356 | fmtargs = dict(color=colors, count=count, | |
357 | dots="."*len(str(count)), spaces=" "*len(str(count)), |
|
357 | dots="."*len(str(count)), spaces=" "*len(str(count)), | |
358 | width=self.width, txtwidth=self.txtwidth) |
|
358 | width=self.width, txtwidth=self.txtwidth) | |
359 | fmtargs.update(self.lazy_evaluate_fields) |
|
359 | fmtargs.update(self.lazy_evaluate_fields) | |
360 | fmtargs.update(kwargs) |
|
360 | fmtargs.update(kwargs) | |
361 |
|
361 | |||
362 | # Prepare the prompt |
|
362 | # Prepare the prompt | |
363 | prompt = colors.prompt + self.templates[name] + colors.normal |
|
363 | prompt = colors.prompt + self.templates[name] + colors.normal | |
364 |
|
364 | |||
365 | # Fill in required fields |
|
365 | # Fill in required fields | |
366 | return self._formatter.format(prompt, **fmtargs) |
|
366 | return self._formatter.format(prompt, **fmtargs) | |
367 |
|
367 | |||
368 | def _render_rewrite(self, color=True): |
|
368 | def _render_rewrite(self, color=True): | |
369 | """Render the ---> rewrite prompt.""" |
|
369 | """Render the ---> rewrite prompt.""" | |
370 | if color: |
|
370 | if color: | |
371 | scheme = self.color_scheme_table.active_colors |
|
371 | scheme = self.color_scheme_table.active_colors | |
372 | # We need a non-input version of these escapes |
|
372 | # We need a non-input version of these escapes | |
373 | color_prompt = scheme.in_prompt.replace("\001","").replace("\002","") |
|
373 | color_prompt = scheme.in_prompt.replace("\001","").replace("\002","") | |
374 | color_normal = scheme.normal |
|
374 | color_normal = scheme.normal | |
375 | else: |
|
375 | else: | |
376 | color_prompt, color_normal = '', '' |
|
376 | color_prompt, color_normal = '', '' | |
377 |
|
377 | |||
378 | return color_prompt + "-> ".rjust(self.txtwidth, "-") + color_normal |
|
378 | return color_prompt + "-> ".rjust(self.txtwidth, "-") + color_normal | |
379 |
|
379 | |||
380 | def render(self, name, color=True, just=None, **kwargs): |
|
380 | def render(self, name, color=True, just=None, **kwargs): | |
381 | """ |
|
381 | """ | |
382 | Render the selected prompt. |
|
382 | Render the selected prompt. | |
383 |
|
383 | |||
384 | Parameters |
|
384 | Parameters | |
385 | ---------- |
|
385 | ---------- | |
386 | name : str |
|
386 | name : str | |
387 | Which prompt to render. One of 'in', 'in2', 'out', 'rewrite' |
|
387 | Which prompt to render. One of 'in', 'in2', 'out', 'rewrite' | |
388 | color : bool |
|
388 | color : bool | |
389 | If True (default), include ANSI escape sequences for a coloured prompt. |
|
389 | If True (default), include ANSI escape sequences for a coloured prompt. | |
390 | just : bool |
|
390 | just : bool | |
391 | If True, justify the prompt to the width of the last prompt. The |
|
391 | If True, justify the prompt to the width of the last prompt. The | |
392 | default is stored in self.justify. |
|
392 | default is stored in self.justify. | |
393 | **kwargs : |
|
393 | **kwargs : | |
394 | Additional arguments will be passed to the string formatting operation, |
|
394 | Additional arguments will be passed to the string formatting operation, | |
395 | so they can override the values that would otherwise fill in the |
|
395 | so they can override the values that would otherwise fill in the | |
396 | template. |
|
396 | template. | |
397 |
|
397 | |||
398 | Returns |
|
398 | Returns | |
399 | ------- |
|
399 | ------- | |
400 | A string containing the rendered prompt. |
|
400 | A string containing the rendered prompt. | |
401 | """ |
|
401 | """ | |
402 | res = self._render(name, color=color, **kwargs) |
|
402 | res = self._render(name, color=color, **kwargs) | |
403 |
|
403 | |||
404 | # Handle justification of prompt |
|
404 | # Handle justification of prompt | |
405 | invis_chars = self.invisible_chars[name] if color else 0 |
|
405 | invis_chars = self.invisible_chars[name] if color else 0 | |
406 | self.txtwidth = _lenlastline(res) - invis_chars |
|
406 | # self.txtwidth = _lenlastline(res) - invis_chars | |
407 | just = self.justify if (just is None) else just |
|
407 | just = self.justify if (just is None) else just | |
408 | # If the prompt spans more than one line, don't try to justify it: |
|
408 | # If the prompt spans more than one line, don't try to justify it: | |
409 | if just and name != 'in' and ('\n' not in res) and ('\r' not in res): |
|
409 | if just and name != 'in' and ('\n' not in res) and ('\r' not in res): | |
410 | res = res.rjust(self.width + invis_chars) |
|
410 | res = res.rjust(self.width + invis_chars) | |
411 | self.width = _lenlastline(res) - invis_chars |
|
411 | # self.width = _lenlastline(res) - invis_chars | |
412 | return res |
|
412 | return res |
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