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1 | """Shell mode for IPython. |
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1 | """Shell mode for IPython. | |
2 |
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2 | |||
3 | Start ipython in shell mode by invoking "ipython -p sh" |
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3 | Start ipython in shell mode by invoking "ipython -p sh" | |
4 |
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4 | |||
5 | (the old version, "ipython -p pysh" still works but this is the more "modern" |
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5 | (the old version, "ipython -p pysh" still works but this is the more "modern" | |
6 | shell mode and is recommended for users who don't care about pysh-mode |
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6 | shell mode and is recommended for users who don't care about pysh-mode | |
7 | compatibility) |
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7 | compatibility) | |
8 | """ |
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8 | """ | |
9 |
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9 | |||
10 | from IPython import ipapi |
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10 | from IPython import ipapi | |
11 | import os,textwrap |
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11 | import os,textwrap | |
12 |
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12 | |||
13 | # The import below effectively obsoletes your old-style ipythonrc[.ini], |
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13 | # The import below effectively obsoletes your old-style ipythonrc[.ini], | |
14 | # so consider yourself warned! |
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14 | # so consider yourself warned! | |
15 |
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15 | |||
16 | import ipy_defaults |
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16 | import ipy_defaults | |
17 |
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17 | |||
18 | def main(): |
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18 | def main(): | |
19 | ip = ipapi.get() |
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19 | ip = ipapi.get() | |
20 | o = ip.options |
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20 | o = ip.options | |
21 | # autocall to "full" mode (smart mode is default, I like full mode) |
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21 | # autocall to "full" mode (smart mode is default, I like full mode) | |
22 |
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22 | |||
23 | o.autocall = 2 |
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23 | o.autocall = 2 | |
24 |
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24 | |||
25 | # Jason Orendorff's path class is handy to have in user namespace |
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25 | # Jason Orendorff's path class is handy to have in user namespace | |
26 | # if you are doing shell-like stuff |
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26 | # if you are doing shell-like stuff | |
27 | try: |
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27 | try: | |
28 | ip.ex("from path import path" ) |
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28 | ip.ex("from path import path" ) | |
29 | except ImportError: |
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29 | except ImportError: | |
30 | pass |
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30 | pass | |
31 |
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31 | |||
32 | # beefed up %env is handy in shell mode |
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32 | # beefed up %env is handy in shell mode | |
33 | import envpersist |
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33 | import envpersist | |
34 | import ipy_which |
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34 | import ipy_which | |
35 | import ipy_app_completers |
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35 | import ipy_app_completers | |
36 | import ipy_rehashdir |
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36 | import ipy_rehashdir | |
37 | import ipy_signals |
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37 | import ipy_signals | |
38 |
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38 | |||
39 |
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39 | |||
40 | ip.ex('import os') |
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40 | ip.ex('import os') | |
41 | ip.ex("def up(): os.chdir('..')") |
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41 | ip.ex("def up(): os.chdir('..')") | |
42 |
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42 | |||
43 | # Nice prompt |
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43 | # Nice prompt | |
44 |
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44 | |||
45 | o.prompt_in1= r'\C_LightBlue[\C_LightCyan\Y2\C_LightBlue]\C_Green|\#> ' |
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45 | o.prompt_in1= r'\C_LightBlue[\C_LightCyan\Y2\C_LightBlue]\C_Green|\#> ' | |
46 | o.prompt_in2= r'\C_Green|\C_LightGreen\D\C_Green> ' |
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46 | o.prompt_in2= r'\C_Green|\C_LightGreen\D\C_Green> ' | |
47 | o.prompt_out= '<\#> ' |
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47 | o.prompt_out= '<\#> ' | |
48 |
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48 | |||
49 | from IPython import Release |
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49 | from IPython import Release | |
50 |
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50 | |||
51 | import sys |
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51 | import sys | |
52 | # I like my banner minimal. |
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52 | # I like my banner minimal. | |
53 | o.banner = "IPython %s [on Py %s]\n" % (Release.version,sys.version.split(None,1)[0]) |
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53 | o.banner = "IPython %s [on Py %s]\n" % (Release.version,sys.version.split(None,1)[0]) | |
54 |
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54 | |||
55 | # make 'd' an alias for ls -F |
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55 | # make 'd' an alias for ls -F | |
56 |
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56 | |||
57 | # ip.magic('alias d ls -F --color=auto') |
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57 | # ip.magic('alias d ls -F --color=auto') | |
58 |
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58 | |||
59 | ip.IP.default_option('cd','-q') |
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59 | ip.IP.default_option('cd','-q') | |
60 |
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60 | |||
61 | # If you only rarely want to execute the things you %edit... |
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61 | # If you only rarely want to execute the things you %edit... | |
62 |
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62 | |||
63 | #ip.IP.default_option('edit','-x') |
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63 | #ip.IP.default_option('edit','-x') | |
64 |
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64 | |||
65 |
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65 | |||
66 | o.prompts_pad_left="1" |
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66 | o.prompts_pad_left="1" | |
67 | # Remove all blank lines in between prompts, like a normal shell. |
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67 | # Remove all blank lines in between prompts, like a normal shell. | |
68 | o.separate_in="0" |
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68 | o.separate_in="0" | |
69 | o.separate_out="0" |
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69 | o.separate_out="0" | |
70 | o.separate_out2="0" |
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70 | o.separate_out2="0" | |
71 |
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71 | |||
72 | # now alias all syscommands |
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72 | # now alias all syscommands | |
73 |
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73 | |||
74 | db = ip.db |
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74 | db = ip.db | |
75 |
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75 | |||
76 | syscmds = db.get("syscmdlist",[] ) |
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76 | syscmds = db.get("syscmdlist",[] ) | |
77 | if not syscmds: |
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77 | if not syscmds: | |
78 | print textwrap.dedent(""" |
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78 | print textwrap.dedent(""" | |
79 | System command list not initialized, probably the first run... |
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79 | System command list not initialized, probably the first run... | |
80 | running %rehashx to refresh the command list. Run %rehashx |
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80 | running %rehashx to refresh the command list. Run %rehashx | |
81 | again to refresh command list (after installing new software etc.) |
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81 | again to refresh command list (after installing new software etc.) | |
82 | """) |
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82 | """) | |
83 | ip.magic('rehashx') |
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83 | ip.magic('rehashx') | |
84 | syscmds = db.get("syscmdlist") |
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84 | syscmds = db.get("syscmdlist") | |
85 |
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85 | |||
86 | # locase aliases on win#2 only |
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86 | # locase aliases on win#2 only | |
87 | if os.name == 'posix': |
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87 | if os.name == 'posix': | |
88 | mapper = lambda s:s |
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88 | mapper = lambda s:s | |
89 | else: |
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89 | else: | |
90 | def mapper(s): return s.lower() |
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90 | def mapper(s): return s.lower() | |
91 |
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91 | |||
92 | for cmd in syscmds: |
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92 | for cmd in syscmds: | |
93 | #print "al",cmd |
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93 | #print "al",cmd | |
94 | noext, ext = os.path.splitext(cmd) |
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94 | noext, ext = os.path.splitext(cmd) | |
95 | ip.IP.alias_table[mapper(noext)] = (0,cmd) |
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95 | ip.IP.alias_table[mapper(noext)] = (0,cmd) | |
96 |
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96 | |||
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97 | if 'ls' in syscmds: | |||
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98 | # use the colors of cygwin ls (recommended) | |||
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99 | ip.magic('alias d ls -F --color=auto') | |||
97 | # mglob combines 'find', recursion, exclusion... '%mglob?' to learn more |
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100 | # mglob combines 'find', recursion, exclusion... '%mglob?' to learn more | |
98 | ip.load("IPython.external.mglob") |
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101 | ip.load("IPython.external.mglob") | |
99 |
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102 | |||
100 | extend_shell_behavior(ip) |
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103 | extend_shell_behavior(ip) | |
101 |
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104 | |||
102 | # XXX You do not need to understand the next function! |
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105 | # XXX You do not need to understand the next function! | |
103 | # This should probably be moved out of profile |
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106 | # This should probably be moved out of profile | |
104 |
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107 | |||
105 | def extend_shell_behavior(ip): |
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108 | def extend_shell_behavior(ip): | |
106 |
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109 | |||
107 | # Instead of making signature a global variable tie it to IPSHELL. |
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110 | # Instead of making signature a global variable tie it to IPSHELL. | |
108 | # In future if it is required to distinguish between different |
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111 | # In future if it is required to distinguish between different | |
109 | # shells we can assign a signature per shell basis |
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112 | # shells we can assign a signature per shell basis | |
110 | ip.IP.__sig__ = 0xa005 |
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113 | ip.IP.__sig__ = 0xa005 | |
111 | # mark the IPSHELL with this signature |
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114 | # mark the IPSHELL with this signature | |
112 | ip.IP.user_ns['__builtins__'].__dict__['__sig__'] = ip.IP.__sig__ |
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115 | ip.IP.user_ns['__builtins__'].__dict__['__sig__'] = ip.IP.__sig__ | |
113 |
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116 | |||
114 | from IPython.Itpl import ItplNS |
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117 | from IPython.Itpl import ItplNS | |
115 | from IPython.genutils import shell |
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118 | from IPython.genutils import shell | |
116 | # utility to expand user variables via Itpl |
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119 | # utility to expand user variables via Itpl | |
117 | # xxx do something sensible with depth? |
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120 | # xxx do something sensible with depth? | |
118 | ip.IP.var_expand = lambda cmd, lvars=None, depth=2: \ |
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121 | ip.IP.var_expand = lambda cmd, lvars=None, depth=2: \ | |
119 | str(ItplNS(cmd.replace('#','\#'), ip.IP.user_ns, get_locals())) |
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122 | str(ItplNS(cmd.replace('#','\#'), ip.IP.user_ns, get_locals())) | |
120 |
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123 | |||
121 | def get_locals(): |
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124 | def get_locals(): | |
122 | """ Substituting a variable through Itpl deep inside the IPSHELL stack |
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125 | """ Substituting a variable through Itpl deep inside the IPSHELL stack | |
123 | requires the knowledge of all the variables in scope upto the last |
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126 | requires the knowledge of all the variables in scope upto the last | |
124 | IPSHELL frame. This routine simply merges all the local variables |
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127 | IPSHELL frame. This routine simply merges all the local variables | |
125 | on the IPSHELL stack without worrying about their scope rules |
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128 | on the IPSHELL stack without worrying about their scope rules | |
126 | """ |
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129 | """ | |
127 | import sys |
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130 | import sys | |
128 | # note lambda expression constitues a function call |
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131 | # note lambda expression constitues a function call | |
129 | # hence fno should be incremented by one |
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132 | # hence fno should be incremented by one | |
130 | getsig = lambda fno: sys._getframe(fno+1).f_globals \ |
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133 | getsig = lambda fno: sys._getframe(fno+1).f_globals \ | |
131 | ['__builtins__'].__dict__['__sig__'] |
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134 | ['__builtins__'].__dict__['__sig__'] | |
132 | getlvars = lambda fno: sys._getframe(fno+1).f_locals |
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135 | getlvars = lambda fno: sys._getframe(fno+1).f_locals | |
133 | # trackback until we enter the IPSHELL |
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136 | # trackback until we enter the IPSHELL | |
134 | frame_no = 1 |
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137 | frame_no = 1 | |
135 | sig = ip.IP.__sig__ |
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138 | sig = ip.IP.__sig__ | |
136 | fsig = ~sig |
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139 | fsig = ~sig | |
137 | while fsig != sig : |
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140 | while fsig != sig : | |
138 | try: |
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141 | try: | |
139 | fsig = getsig(frame_no) |
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142 | fsig = getsig(frame_no) | |
140 | except (AttributeError, KeyError): |
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143 | except (AttributeError, KeyError): | |
141 | frame_no += 1 |
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144 | frame_no += 1 | |
142 | except ValueError: |
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145 | except ValueError: | |
143 | # stack is depleted |
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146 | # stack is depleted | |
144 | # call did not originate from IPSHELL |
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147 | # call did not originate from IPSHELL | |
145 | return {} |
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148 | return {} | |
146 | first_frame = frame_no |
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149 | first_frame = frame_no | |
147 | # walk further back until we exit from IPSHELL or deplete stack |
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150 | # walk further back until we exit from IPSHELL or deplete stack | |
148 | try: |
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151 | try: | |
149 | while(sig == getsig(frame_no+1)): |
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152 | while(sig == getsig(frame_no+1)): | |
150 | frame_no += 1 |
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153 | frame_no += 1 | |
151 | except (AttributeError, KeyError, ValueError): |
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154 | except (AttributeError, KeyError, ValueError): | |
152 | pass |
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155 | pass | |
153 | # merge the locals from top down hence overriding |
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156 | # merge the locals from top down hence overriding | |
154 | # any re-definitions of variables, functions etc. |
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157 | # any re-definitions of variables, functions etc. | |
155 | lvars = {} |
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158 | lvars = {} | |
156 | for fno in range(frame_no, first_frame-1, -1): |
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159 | for fno in range(frame_no, first_frame-1, -1): | |
157 | lvars.update(getlvars(fno)) |
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160 | lvars.update(getlvars(fno)) | |
158 | #print '\n'*5, first_frame, frame_no, '\n', lvars, '\n'*5 #dbg |
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161 | #print '\n'*5, first_frame, frame_no, '\n', lvars, '\n'*5 #dbg | |
159 | return lvars |
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162 | return lvars | |
160 |
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163 | |||
161 | def _runlines(lines): |
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164 | def _runlines(lines): | |
162 | """Run a string of one or more lines of source. |
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165 | """Run a string of one or more lines of source. | |
163 |
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166 | |||
164 | This method is capable of running a string containing multiple source |
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167 | This method is capable of running a string containing multiple source | |
165 | lines, as if they had been entered at the IPython prompt. Since it |
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168 | lines, as if they had been entered at the IPython prompt. Since it | |
166 | exposes IPython's processing machinery, the given strings can contain |
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169 | exposes IPython's processing machinery, the given strings can contain | |
167 | magic calls (%magic), special shell access (!cmd), etc.""" |
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170 | magic calls (%magic), special shell access (!cmd), etc.""" | |
168 |
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171 | |||
169 | # We must start with a clean buffer, in case this is run from an |
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172 | # We must start with a clean buffer, in case this is run from an | |
170 | # interactive IPython session (via a magic, for example). |
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173 | # interactive IPython session (via a magic, for example). | |
171 | ip.IP.resetbuffer() |
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174 | ip.IP.resetbuffer() | |
172 | lines = lines.split('\n') |
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175 | lines = lines.split('\n') | |
173 | more = 0 |
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176 | more = 0 | |
174 | command = '' |
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177 | command = '' | |
175 | for line in lines: |
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178 | for line in lines: | |
176 | # skip blank lines so we don't mess up the prompt counter, but do |
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179 | # skip blank lines so we don't mess up the prompt counter, but do | |
177 | # NOT skip even a blank line if we are in a code block (more is |
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180 | # NOT skip even a blank line if we are in a code block (more is | |
178 | # true) |
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181 | # true) | |
179 | # if command is not empty trim the line |
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182 | # if command is not empty trim the line | |
180 | if command != '' : |
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183 | if command != '' : | |
181 | line = line.strip() |
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184 | line = line.strip() | |
182 | # add the broken line to the command |
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185 | # add the broken line to the command | |
183 | if line and line[-1] == '\\' : |
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186 | if line and line[-1] == '\\' : | |
184 | command += line[0:-1] + ' ' |
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187 | command += line[0:-1] + ' ' | |
185 | more = True |
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188 | more = True | |
186 | continue |
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189 | continue | |
187 | else : |
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190 | else : | |
188 | # add the last (current) line to the command |
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191 | # add the last (current) line to the command | |
189 | command += line |
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192 | command += line | |
190 | if command or more: |
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193 | if command or more: | |
191 | more = ip.IP.push(ip.IP.prefilter(command,more)) |
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194 | more = ip.IP.push(ip.IP.prefilter(command,more)) | |
192 | command = '' |
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195 | command = '' | |
193 | # IPython's runsource returns None if there was an error |
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196 | # IPython's runsource returns None if there was an error | |
194 | # compiling the code. This allows us to stop processing right |
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197 | # compiling the code. This allows us to stop processing right | |
195 | # away, so the user gets the error message at the right place. |
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198 | # away, so the user gets the error message at the right place. | |
196 | if more is None: |
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199 | if more is None: | |
197 | break |
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200 | break | |
198 | # final newline in case the input didn't have it, so that the code |
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201 | # final newline in case the input didn't have it, so that the code | |
199 | # actually does get executed |
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202 | # actually does get executed | |
200 | if more: |
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203 | if more: | |
201 | ip.IP.push('\n') |
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204 | ip.IP.push('\n') | |
202 |
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205 | |||
203 | ip.IP.runlines = _runlines |
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206 | ip.IP.runlines = _runlines | |
204 |
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207 | |||
205 | main() |
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208 | main() |
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