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@@ -1,429 +1,429 b'' | |||||
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 | Authors: |
|
4 | Authors: | |
5 |
|
5 | |||
6 | * Fernando Perez |
|
6 | * Fernando Perez | |
7 | * Brian Granger |
|
7 | * Brian Granger | |
8 | * Thomas Kluyver |
|
8 | * Thomas Kluyver | |
9 | """ |
|
9 | """ | |
10 |
|
10 | |||
11 | #----------------------------------------------------------------------------- |
|
11 | #----------------------------------------------------------------------------- | |
12 | # Copyright (C) 2008-2011 The IPython Development Team |
|
12 | # Copyright (C) 2008-2011 The IPython Development Team | |
13 | # Copyright (C) 2001-2007 Fernando Perez <fperez@colorado.edu> |
|
13 | # Copyright (C) 2001-2007 Fernando Perez <fperez@colorado.edu> | |
14 | # |
|
14 | # | |
15 | # Distributed under the terms of the BSD License. The full license is in |
|
15 | # Distributed under the terms of the BSD License. The full license is in | |
16 | # the file COPYING, distributed as part of this software. |
|
16 | # the file COPYING, distributed as part of this software. | |
17 | #----------------------------------------------------------------------------- |
|
17 | #----------------------------------------------------------------------------- | |
18 |
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18 | |||
19 | #----------------------------------------------------------------------------- |
|
19 | #----------------------------------------------------------------------------- | |
20 | # Imports |
|
20 | # Imports | |
21 | #----------------------------------------------------------------------------- |
|
21 | #----------------------------------------------------------------------------- | |
22 |
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22 | |||
23 | import os |
|
23 | import os | |
24 | import re |
|
24 | import re | |
25 | import socket |
|
25 | import socket | |
26 | import sys |
|
26 | import sys | |
27 | import time |
|
27 | import time | |
28 |
|
28 | |||
29 | from string import Formatter |
|
29 | from string import Formatter | |
30 |
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30 | |||
31 | from IPython.config.configurable import Configurable |
|
31 | from IPython.config.configurable import Configurable | |
32 | from IPython.core import release |
|
32 | from IPython.core import release | |
33 | from IPython.utils import coloransi |
|
33 | from IPython.utils import coloransi | |
34 | from IPython.utils.traitlets import (Unicode, Instance, Dict, Bool, Int) |
|
34 | from IPython.utils.traitlets import (Unicode, Instance, Dict, Bool, Int) | |
35 |
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35 | |||
36 | #----------------------------------------------------------------------------- |
|
36 | #----------------------------------------------------------------------------- | |
37 | # Color schemes for prompts |
|
37 | # Color schemes for prompts | |
38 | #----------------------------------------------------------------------------- |
|
38 | #----------------------------------------------------------------------------- | |
39 |
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39 | |||
40 | InputColors = coloransi.InputTermColors # just a shorthand |
|
40 | InputColors = coloransi.InputTermColors # just a shorthand | |
41 | Colors = coloransi.TermColors # just a shorthand |
|
41 | Colors = coloransi.TermColors # just a shorthand | |
42 |
|
42 | |||
43 | color_lists = dict(normal=Colors(), inp=InputColors(), nocolor=coloransi.NoColors()) |
|
43 | color_lists = dict(normal=Colors(), inp=InputColors(), nocolor=coloransi.NoColors()) | |
44 |
|
44 | |||
45 | PColNoColors = coloransi.ColorScheme( |
|
45 | PColNoColors = coloransi.ColorScheme( | |
46 | 'NoColor', |
|
46 | 'NoColor', | |
47 | in_prompt = InputColors.NoColor, # Input prompt |
|
47 | in_prompt = InputColors.NoColor, # Input prompt | |
48 | in_number = InputColors.NoColor, # Input prompt number |
|
48 | in_number = InputColors.NoColor, # Input prompt number | |
49 | in_prompt2 = InputColors.NoColor, # Continuation prompt |
|
49 | in_prompt2 = InputColors.NoColor, # Continuation prompt | |
50 | in_normal = InputColors.NoColor, # color off (usu. Colors.Normal) |
|
50 | in_normal = InputColors.NoColor, # color off (usu. Colors.Normal) | |
51 |
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51 | |||
52 | out_prompt = Colors.NoColor, # Output prompt |
|
52 | out_prompt = Colors.NoColor, # Output prompt | |
53 | out_number = Colors.NoColor, # Output prompt number |
|
53 | out_number = Colors.NoColor, # Output prompt number | |
54 |
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54 | |||
55 | normal = Colors.NoColor # color off (usu. Colors.Normal) |
|
55 | normal = Colors.NoColor # color off (usu. Colors.Normal) | |
56 | ) |
|
56 | ) | |
57 |
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57 | |||
58 | # make some schemes as instances so we can copy them for modification easily: |
|
58 | # make some schemes as instances so we can copy them for modification easily: | |
59 | PColLinux = coloransi.ColorScheme( |
|
59 | PColLinux = coloransi.ColorScheme( | |
60 | 'Linux', |
|
60 | 'Linux', | |
61 | in_prompt = InputColors.Green, |
|
61 | in_prompt = InputColors.Green, | |
62 | in_number = InputColors.LightGreen, |
|
62 | in_number = InputColors.LightGreen, | |
63 | in_prompt2 = InputColors.Green, |
|
63 | in_prompt2 = InputColors.Green, | |
64 | in_normal = InputColors.Normal, # color off (usu. Colors.Normal) |
|
64 | in_normal = InputColors.Normal, # color off (usu. Colors.Normal) | |
65 |
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65 | |||
66 | out_prompt = Colors.Red, |
|
66 | out_prompt = Colors.Red, | |
67 | out_number = Colors.LightRed, |
|
67 | out_number = Colors.LightRed, | |
68 |
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68 | |||
69 | normal = Colors.Normal |
|
69 | normal = Colors.Normal | |
70 | ) |
|
70 | ) | |
71 |
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71 | |||
72 | # Slightly modified Linux for light backgrounds |
|
72 | # Slightly modified Linux for light backgrounds | |
73 | PColLightBG = PColLinux.copy('LightBG') |
|
73 | PColLightBG = PColLinux.copy('LightBG') | |
74 |
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74 | |||
75 | PColLightBG.colors.update( |
|
75 | PColLightBG.colors.update( | |
76 | in_prompt = InputColors.Blue, |
|
76 | in_prompt = InputColors.Blue, | |
77 | in_number = InputColors.LightBlue, |
|
77 | in_number = InputColors.LightBlue, | |
78 | in_prompt2 = InputColors.Blue |
|
78 | in_prompt2 = InputColors.Blue | |
79 | ) |
|
79 | ) | |
80 |
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80 | |||
81 | #----------------------------------------------------------------------------- |
|
81 | #----------------------------------------------------------------------------- | |
82 | # Utilities |
|
82 | # Utilities | |
83 | #----------------------------------------------------------------------------- |
|
83 | #----------------------------------------------------------------------------- | |
84 |
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84 | |||
85 | class LazyEvaluate(object): |
|
85 | class LazyEvaluate(object): | |
86 | """This is used for formatting strings with values that need to be updated |
|
86 | """This is used for formatting strings with values that need to be updated | |
87 | at that time, such as the current time or working directory.""" |
|
87 | at that time, such as the current time or working directory.""" | |
88 | def __init__(self, func, *args, **kwargs): |
|
88 | def __init__(self, func, *args, **kwargs): | |
89 | self.func = func |
|
89 | self.func = func | |
90 | self.args = args |
|
90 | self.args = args | |
91 | self.kwargs = kwargs |
|
91 | self.kwargs = kwargs | |
92 |
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92 | |||
93 | def __call__(self, **kwargs): |
|
93 | def __call__(self, **kwargs): | |
94 | self.kwargs.update(kwargs) |
|
94 | self.kwargs.update(kwargs) | |
95 | return self.func(*self.args, **self.kwargs) |
|
95 | return self.func(*self.args, **self.kwargs) | |
96 |
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96 | |||
97 | def __str__(self): |
|
97 | def __str__(self): | |
98 | return str(self()) |
|
98 | return str(self()) | |
99 |
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99 | |||
100 | def multiple_replace(dict, text): |
|
100 | def multiple_replace(dict, text): | |
101 | """ Replace in 'text' all occurences of any key in the given |
|
101 | """ Replace in 'text' all occurences of any key in the given | |
102 | dictionary by its corresponding value. Returns the new string.""" |
|
102 | dictionary by its corresponding value. Returns the new string.""" | |
103 |
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103 | |||
104 | # Function by Xavier Defrang, originally found at: |
|
104 | # Function by Xavier Defrang, originally found at: | |
105 | # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81330 |
|
105 | # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81330 | |
106 |
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106 | |||
107 | # Create a regular expression from the dictionary keys |
|
107 | # Create a regular expression from the dictionary keys | |
108 | regex = re.compile("(%s)" % "|".join(map(re.escape, dict.keys()))) |
|
108 | regex = re.compile("(%s)" % "|".join(map(re.escape, dict.keys()))) | |
109 | # For each match, look-up corresponding value in dictionary |
|
109 | # For each match, look-up corresponding value in dictionary | |
110 | return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text) |
|
110 | return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text) | |
111 |
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111 | |||
112 | #----------------------------------------------------------------------------- |
|
112 | #----------------------------------------------------------------------------- | |
113 | # Special characters that can be used in prompt templates, mainly bash-like |
|
113 | # Special characters that can be used in prompt templates, mainly bash-like | |
114 | #----------------------------------------------------------------------------- |
|
114 | #----------------------------------------------------------------------------- | |
115 |
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115 | |||
116 | # If $HOME isn't defined (Windows), make it an absurd string so that it can |
|
116 | # If $HOME isn't defined (Windows), make it an absurd string so that it can | |
117 | # never be expanded out into '~'. Basically anything which can never be a |
|
117 | # never be expanded out into '~'. Basically anything which can never be a | |
118 | # reasonable directory name will do, we just want the $HOME -> '~' operation |
|
118 | # reasonable directory name will do, we just want the $HOME -> '~' operation | |
119 | # to become a no-op. We pre-compute $HOME here so it's not done on every |
|
119 | # to become a no-op. We pre-compute $HOME here so it's not done on every | |
120 | # prompt call. |
|
120 | # prompt call. | |
121 |
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121 | |||
122 | # FIXME: |
|
122 | # FIXME: | |
123 |
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123 | |||
124 | # - This should be turned into a class which does proper namespace management, |
|
124 | # - This should be turned into a class which does proper namespace management, | |
125 | # since the prompt specials need to be evaluated in a certain namespace. |
|
125 | # since the prompt specials need to be evaluated in a certain namespace. | |
126 | # Currently it's just globals, which need to be managed manually by code |
|
126 | # Currently it's just globals, which need to be managed manually by code | |
127 | # below. |
|
127 | # below. | |
128 |
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128 | |||
129 | # - I also need to split up the color schemes from the prompt specials |
|
129 | # - I also need to split up the color schemes from the prompt specials | |
130 | # somehow. I don't have a clean design for that quite yet. |
|
130 | # somehow. I don't have a clean design for that quite yet. | |
131 |
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131 | |||
132 | HOME = os.environ.get("HOME","//////:::::ZZZZZ,,,~~~") |
|
132 | HOME = os.environ.get("HOME","//////:::::ZZZZZ,,,~~~") | |
133 |
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133 | |||
134 | # We precompute a few more strings here for the prompt_specials, which are |
|
134 | # We precompute a few more strings here for the prompt_specials, which are | |
135 | # fixed once ipython starts. This reduces the runtime overhead of computing |
|
135 | # fixed once ipython starts. This reduces the runtime overhead of computing | |
136 | # prompt strings. |
|
136 | # prompt strings. | |
137 | USER = os.environ.get("USER") |
|
137 | USER = os.environ.get("USER") | |
138 | HOSTNAME = socket.gethostname() |
|
138 | HOSTNAME = socket.gethostname() | |
139 | HOSTNAME_SHORT = HOSTNAME.split(".")[0] |
|
139 | HOSTNAME_SHORT = HOSTNAME.split(".")[0] | |
140 | ROOT_SYMBOL = "#" if (os.name=='nt' or os.getuid()==0) else "$" |
|
140 | ROOT_SYMBOL = "#" if (os.name=='nt' or os.getuid()==0) else "$" | |
141 |
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141 | |||
142 | prompt_abbreviations = { |
|
142 | prompt_abbreviations = { | |
143 | # Prompt/history count |
|
143 | # Prompt/history count | |
144 | '%n' : '{color.number}' '{count}' '{color.prompt}', |
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144 | '%n' : '{color.number}' '{count}' '{color.prompt}', | |
145 | r'\#': '{color.number}' '{count}' '{color.prompt}', |
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145 | r'\#': '{color.number}' '{count}' '{color.prompt}', | |
146 | # Just the prompt counter number, WITHOUT any coloring wrappers, so users |
|
146 | # Just the prompt counter number, WITHOUT any coloring wrappers, so users | |
147 | # can get numbers displayed in whatever color they want. |
|
147 | # can get numbers displayed in whatever color they want. | |
148 | r'\N': '{count}', |
|
148 | r'\N': '{count}', | |
149 |
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149 | |||
150 | # Prompt/history count, with the actual digits replaced by dots. Used |
|
150 | # Prompt/history count, with the actual digits replaced by dots. Used | |
151 | # mainly in continuation prompts (prompt_in2) |
|
151 | # mainly in continuation prompts (prompt_in2) | |
152 | r'\D': '{dots}', |
|
152 | r'\D': '{dots}', | |
153 |
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153 | |||
154 | # Current time |
|
154 | # Current time | |
155 | r'\T' : '{time}', |
|
155 | r'\T' : '{time}', | |
156 | # Current working directory |
|
156 | # Current working directory | |
157 | r'\w': '{cwd}', |
|
157 | r'\w': '{cwd}', | |
158 | # Basename of current working directory. |
|
158 | # Basename of current working directory. | |
159 | # (use os.sep to make this portable across OSes) |
|
159 | # (use os.sep to make this portable across OSes) | |
160 | r'\W' : '{cwd_last}', |
|
160 | r'\W' : '{cwd_last}', | |
161 | # These X<N> are an extension to the normal bash prompts. They return |
|
161 | # These X<N> are an extension to the normal bash prompts. They return | |
162 | # N terms of the path, after replacing $HOME with '~' |
|
162 | # N terms of the path, after replacing $HOME with '~' | |
163 | r'\X0': '{cwd_x[0]}', |
|
163 | r'\X0': '{cwd_x[0]}', | |
164 | r'\X1': '{cwd_x[1]}', |
|
164 | r'\X1': '{cwd_x[1]}', | |
165 | r'\X2': '{cwd_x[2]}', |
|
165 | r'\X2': '{cwd_x[2]}', | |
166 | r'\X3': '{cwd_x[3]}', |
|
166 | r'\X3': '{cwd_x[3]}', | |
167 | r'\X4': '{cwd_x[4]}', |
|
167 | r'\X4': '{cwd_x[4]}', | |
168 | r'\X5': '{cwd_x[5]}', |
|
168 | r'\X5': '{cwd_x[5]}', | |
169 | # Y<N> are similar to X<N>, but they show '~' if it's the directory |
|
169 | # Y<N> are similar to X<N>, but they show '~' if it's the directory | |
170 | # N+1 in the list. Somewhat like %cN in tcsh. |
|
170 | # N+1 in the list. Somewhat like %cN in tcsh. | |
171 | r'\Y0': '{cwd_y[0]}', |
|
171 | r'\Y0': '{cwd_y[0]}', | |
172 | r'\Y1': '{cwd_y[1]}', |
|
172 | r'\Y1': '{cwd_y[1]}', | |
173 | r'\Y2': '{cwd_y[2]}', |
|
173 | r'\Y2': '{cwd_y[2]}', | |
174 | r'\Y3': '{cwd_y[3]}', |
|
174 | r'\Y3': '{cwd_y[3]}', | |
175 | r'\Y4': '{cwd_y[4]}', |
|
175 | r'\Y4': '{cwd_y[4]}', | |
176 | r'\Y5': '{cwd_y[5]}', |
|
176 | r'\Y5': '{cwd_y[5]}', | |
177 | # Hostname up to first . |
|
177 | # Hostname up to first . | |
178 | r'\h': HOSTNAME_SHORT, |
|
178 | r'\h': HOSTNAME_SHORT, | |
179 | # Full hostname |
|
179 | # Full hostname | |
180 | r'\H': HOSTNAME, |
|
180 | r'\H': HOSTNAME, | |
181 | # Username of current user |
|
181 | # Username of current user | |
182 | r'\u': USER, |
|
182 | r'\u': USER, | |
183 | # Escaped '\' |
|
183 | # Escaped '\' | |
184 | '\\\\': '\\', |
|
184 | '\\\\': '\\', | |
185 | # Newline |
|
185 | # Newline | |
186 | r'\n': '\n', |
|
186 | r'\n': '\n', | |
187 | # Carriage return |
|
187 | # Carriage return | |
188 | r'\r': '\r', |
|
188 | r'\r': '\r', | |
189 | # Release version |
|
189 | # Release version | |
190 | r'\v': release.version, |
|
190 | r'\v': release.version, | |
191 | # Root symbol ($ or #) |
|
191 | # Root symbol ($ or #) | |
192 | r'\$': ROOT_SYMBOL, |
|
192 | r'\$': ROOT_SYMBOL, | |
193 | } |
|
193 | } | |
194 |
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194 | |||
195 | #----------------------------------------------------------------------------- |
|
195 | #----------------------------------------------------------------------------- | |
196 | # More utilities |
|
196 | # More utilities | |
197 | #----------------------------------------------------------------------------- |
|
197 | #----------------------------------------------------------------------------- | |
198 |
|
198 | |||
199 | def cwd_filt(depth): |
|
199 | def cwd_filt(depth): | |
200 | """Return the last depth elements of the current working directory. |
|
200 | """Return the last depth elements of the current working directory. | |
201 |
|
201 | |||
202 | $HOME is always replaced with '~'. |
|
202 | $HOME is always replaced with '~'. | |
203 | If depth==0, the full path is returned.""" |
|
203 | If depth==0, the full path is returned.""" | |
204 |
|
204 | |||
205 | cwd = os.getcwd().replace(HOME,"~") |
|
205 | cwd = os.getcwd().replace(HOME,"~") | |
206 | out = os.sep.join(cwd.split(os.sep)[-depth:]) |
|
206 | out = os.sep.join(cwd.split(os.sep)[-depth:]) | |
207 | return out or os.sep |
|
207 | return out or os.sep | |
208 |
|
208 | |||
209 | def cwd_filt2(depth): |
|
209 | def cwd_filt2(depth): | |
210 | """Return the last depth elements of the current working directory. |
|
210 | """Return the last depth elements of the current working directory. | |
211 |
|
211 | |||
212 | $HOME is always replaced with '~'. |
|
212 | $HOME is always replaced with '~'. | |
213 | If depth==0, the full path is returned.""" |
|
213 | If depth==0, the full path is returned.""" | |
214 |
|
214 | |||
215 | full_cwd = os.getcwd() |
|
215 | full_cwd = os.getcwd() | |
216 | cwd = full_cwd.replace(HOME,"~").split(os.sep) |
|
216 | cwd = full_cwd.replace(HOME,"~").split(os.sep) | |
217 | if '~' in cwd and len(cwd) == depth+1: |
|
217 | if '~' in cwd and len(cwd) == depth+1: | |
218 | depth += 1 |
|
218 | depth += 1 | |
219 | drivepart = '' |
|
219 | drivepart = '' | |
220 | if sys.platform == 'win32' and len(cwd) > depth: |
|
220 | if sys.platform == 'win32' and len(cwd) > depth: | |
221 | drivepart = os.path.splitdrive(full_cwd)[0] |
|
221 | drivepart = os.path.splitdrive(full_cwd)[0] | |
222 | out = drivepart + '/'.join(cwd[-depth:]) |
|
222 | out = drivepart + '/'.join(cwd[-depth:]) | |
223 |
|
223 | |||
224 | return out or os.sep |
|
224 | return out or os.sep | |
225 |
|
225 | |||
226 | #----------------------------------------------------------------------------- |
|
226 | #----------------------------------------------------------------------------- | |
227 | # Prompt classes |
|
227 | # Prompt classes | |
228 | #----------------------------------------------------------------------------- |
|
228 | #----------------------------------------------------------------------------- | |
229 |
|
229 | |||
230 | lazily_evaluate = {'time': LazyEvaluate(time.strftime, "%H:%M:%S"), |
|
230 | lazily_evaluate = {'time': LazyEvaluate(time.strftime, "%H:%M:%S"), | |
231 | 'cwd': LazyEvaluate(os.getcwd), |
|
231 | 'cwd': LazyEvaluate(os.getcwd), | |
232 | 'cwd_last': LazyEvaluate(lambda: os.getcwd().split(os.sep)[-1]), |
|
232 | 'cwd_last': LazyEvaluate(lambda: os.getcwd().split(os.sep)[-1]), | |
233 | 'cwd_x': [LazyEvaluate(lambda: os.getcwd().replace("%s","~"))] +\ |
|
233 | 'cwd_x': [LazyEvaluate(lambda: os.getcwd().replace("%s","~"))] +\ | |
234 | [LazyEvaluate(cwd_filt, x) for x in range(1,6)], |
|
234 | [LazyEvaluate(cwd_filt, x) for x in range(1,6)], | |
235 | 'cwd_y': [LazyEvaluate(cwd_filt2, x) for x in range(6)] |
|
235 | 'cwd_y': [LazyEvaluate(cwd_filt2, x) for x in range(6)] | |
236 | } |
|
236 | } | |
237 |
|
237 | |||
238 | def _lenlastline(s): |
|
238 | def _lenlastline(s): | |
239 | """Get the length of the last line. More intelligent than |
|
239 | """Get the length of the last line. More intelligent than | |
240 | len(s.splitlines()[-1]). |
|
240 | len(s.splitlines()[-1]). | |
241 | """ |
|
241 | """ | |
242 | if not s or s.endswith(('\n', '\r')): |
|
242 | if not s or s.endswith(('\n', '\r')): | |
243 | return 0 |
|
243 | return 0 | |
244 | return len(s.splitlines()[-1]) |
|
244 | return len(s.splitlines()[-1]) | |
245 |
|
245 | |||
246 |
|
246 | |||
247 | class UserNSFormatter(Formatter): |
|
247 | class UserNSFormatter(Formatter): | |
248 | """A Formatter that falls back on a shell's user_ns and __builtins__ for name resolution""" |
|
248 | """A Formatter that falls back on a shell's user_ns and __builtins__ for name resolution""" | |
249 | def __init__(self, shell): |
|
249 | def __init__(self, shell): | |
250 | self.shell = shell |
|
250 | self.shell = shell | |
251 |
|
251 | |||
252 | def get_value(self, key, args, kwargs): |
|
252 | def get_value(self, key, args, kwargs): | |
253 | # try regular formatting first: |
|
253 | # try regular formatting first: | |
254 | try: |
|
254 | try: | |
255 | return Formatter.get_value(self, key, args, kwargs) |
|
255 | return Formatter.get_value(self, key, args, kwargs) | |
256 | except Exception: |
|
256 | except Exception: | |
257 | pass |
|
257 | pass | |
258 | # next, look in user_ns and builtins: |
|
258 | # next, look in user_ns and builtins: | |
259 | for container in (self.shell.user_ns, __builtins__): |
|
259 | for container in (self.shell.user_ns, __builtins__): | |
260 | if key in container: |
|
260 | if key in container: | |
261 | return container[key] |
|
261 | return container[key] | |
262 | # nothing found, put error message in its place |
|
262 | # nothing found, put error message in its place | |
263 | return "<ERROR: '%s' not found>" % key |
|
263 | return "<ERROR: '%s' not found>" % key | |
264 |
|
264 | |||
265 |
|
265 | |||
266 | class PromptManager(Configurable): |
|
266 | class PromptManager(Configurable): | |
267 | """This is the primary interface for producing IPython's prompts.""" |
|
267 | """This is the primary interface for producing IPython's prompts.""" | |
268 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') |
|
268 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') | |
269 |
|
269 | |||
270 | color_scheme_table = Instance(coloransi.ColorSchemeTable) |
|
270 | color_scheme_table = Instance(coloransi.ColorSchemeTable) | |
271 | color_scheme = Unicode('Linux', config=True) |
|
271 | color_scheme = Unicode('Linux', config=True) | |
272 | def _color_scheme_changed(self, name, new_value): |
|
272 | def _color_scheme_changed(self, name, new_value): | |
273 | self.color_scheme_table.set_active_scheme(new_value) |
|
273 | self.color_scheme_table.set_active_scheme(new_value) | |
274 | for pname in ['in', 'in2', 'out', 'rewrite']: |
|
274 | for pname in ['in', 'in2', 'out', 'rewrite']: | |
275 | # We need to recalculate the number of invisible characters |
|
275 | # We need to recalculate the number of invisible characters | |
276 | self.update_prompt(pname) |
|
276 | self.update_prompt(pname) | |
277 |
|
277 | |||
278 | lazy_evaluate_fields = Dict(help=""" |
|
278 | lazy_evaluate_fields = Dict(help=""" | |
279 | This maps field names used in the prompt templates to functions which |
|
279 | This maps field names used in the prompt templates to functions which | |
280 | will be called when the prompt is rendered. This allows us to include |
|
280 | will be called when the prompt is rendered. This allows us to include | |
281 | things like the current time in the prompts. Functions are only called |
|
281 | things like the current time in the prompts. Functions are only called | |
282 | if they are used in the prompt. |
|
282 | if they are used in the prompt. | |
283 | """) |
|
283 | """) | |
284 | def _lazy_evaluate_fields_default(self): return lazily_evaluate.copy() |
|
284 | def _lazy_evaluate_fields_default(self): return lazily_evaluate.copy() | |
285 |
|
285 | |||
286 | in_template = Unicode('In [\\#]: ', config=True, |
|
286 | in_template = Unicode('In [\\#]: ', config=True, | |
287 | help="Input prompt. '\\#' will be transformed to the prompt number") |
|
287 | help="Input prompt. '\\#' will be transformed to the prompt number") | |
288 | in2_template = Unicode(' .\\D.: ', config=True, |
|
288 | in2_template = Unicode(' .\\D.: ', config=True, | |
289 | help="Continuation prompt.") |
|
289 | help="Continuation prompt.") | |
290 | out_template = Unicode('Out[\\#]: ', config=True, |
|
290 | out_template = Unicode('Out[\\#]: ', config=True, | |
291 | help="Output prompt. '\\#' will be transformed to the prompt number") |
|
291 | help="Output prompt. '\\#' will be transformed to the prompt number") | |
292 |
|
292 | |||
293 | justify = Bool(True, config=True, help=""" |
|
293 | justify = Bool(True, config=True, help=""" | |
294 | If True (default), each prompt will be right-aligned with the |
|
294 | If True (default), each prompt will be right-aligned with the | |
295 | preceding one. |
|
295 | preceding one. | |
296 | """) |
|
296 | """) | |
297 |
|
297 | |||
298 | # We actually store the expanded templates here: |
|
298 | # We actually store the expanded templates here: | |
299 | templates = Dict() |
|
299 | templates = Dict() | |
300 |
|
300 | |||
301 | # The number of characters in the last prompt rendered, not including |
|
301 | # The number of characters in the last prompt rendered, not including | |
302 | # colour characters. |
|
302 | # colour characters. | |
303 | width = Int() |
|
303 | width = Int() | |
304 | txtwidth = Int() # Not including right-justification |
|
304 | txtwidth = Int() # Not including right-justification | |
305 |
|
305 | |||
306 | # The number of characters in each prompt which don't contribute to width |
|
306 | # The number of characters in each prompt which don't contribute to width | |
307 | invisible_chars = Dict() |
|
307 | invisible_chars = Dict() | |
308 | def _invisible_chars_default(self): |
|
308 | def _invisible_chars_default(self): | |
309 | return {'in': 0, 'in2': 0, 'out': 0, 'rewrite':0} |
|
309 | return {'in': 0, 'in2': 0, 'out': 0, 'rewrite':0} | |
310 |
|
310 | |||
311 | def __init__(self, shell, config=None): |
|
311 | def __init__(self, shell, config=None): | |
312 | super(PromptManager, self).__init__(shell=shell, config=config) |
|
312 | super(PromptManager, self).__init__(shell=shell, config=config) | |
313 |
|
313 | |||
314 | # Prepare colour scheme table |
|
314 | # Prepare colour scheme table | |
315 | self.color_scheme_table = coloransi.ColorSchemeTable([PColNoColors, |
|
315 | self.color_scheme_table = coloransi.ColorSchemeTable([PColNoColors, | |
316 | PColLinux, PColLightBG], self.color_scheme) |
|
316 | PColLinux, PColLightBG], self.color_scheme) | |
317 |
|
317 | |||
318 | self._formatter = UserNSFormatter(shell) |
|
318 | self._formatter = UserNSFormatter(shell) | |
319 | # Prepare templates & numbers of invisible characters |
|
319 | # Prepare templates & numbers of invisible characters | |
320 | self.update_prompt('in', self.in_template) |
|
320 | self.update_prompt('in', self.in_template) | |
321 | self.update_prompt('in2', self.in2_template) |
|
321 | self.update_prompt('in2', self.in2_template) | |
322 | self.update_prompt('out', self.out_template) |
|
322 | self.update_prompt('out', self.out_template) | |
323 | self.update_prompt('rewrite') |
|
323 | self.update_prompt('rewrite') | |
324 | self.on_trait_change(self._update_prompt_trait, ['in_template', |
|
324 | self.on_trait_change(self._update_prompt_trait, ['in_template', | |
325 | 'in2_template', 'out_template']) |
|
325 | 'in2_template', 'out_template']) | |
326 |
|
326 | |||
327 | def update_prompt(self, name, new_template=None): |
|
327 | def update_prompt(self, name, new_template=None): | |
328 | """This is called when a prompt template is updated. It processes |
|
328 | """This is called when a prompt template is updated. It processes | |
329 | abbreviations used in the prompt template (like \#) and calculates how |
|
329 | abbreviations used in the prompt template (like \#) and calculates how | |
330 | many invisible characters (ANSI colour escapes) the resulting prompt |
|
330 | many invisible characters (ANSI colour escapes) the resulting prompt | |
331 | contains. |
|
331 | contains. | |
332 |
|
332 | |||
333 | It is also called for each prompt on changing the colour scheme. In both |
|
333 | It is also called for each prompt on changing the colour scheme. In both | |
334 | cases, traitlets should take care of calling this automatically. |
|
334 | cases, traitlets should take care of calling this automatically. | |
335 | """ |
|
335 | """ | |
336 | if new_template is not None: |
|
336 | if new_template is not None: | |
337 | self.templates[name] = multiple_replace(prompt_abbreviations, new_template) |
|
337 | self.templates[name] = multiple_replace(prompt_abbreviations, new_template) | |
338 | # We count invisible characters (colour escapes) on the last line of the |
|
338 | # We count invisible characters (colour escapes) on the last line of the | |
339 | # prompt, to calculate the width for lining up subsequent prompts. |
|
339 | # prompt, to calculate the width for lining up subsequent prompts. | |
340 | invis_chars = _lenlastline(self._render(name, color=True)) - \ |
|
340 | invis_chars = _lenlastline(self._render(name, color=True)) - \ | |
341 | _lenlastline(self._render(name, color=False)) |
|
341 | _lenlastline(self._render(name, color=False)) | |
342 | self.invisible_chars[name] = invis_chars |
|
342 | self.invisible_chars[name] = invis_chars | |
343 |
|
343 | |||
344 | def _update_prompt_trait(self, traitname, new_template): |
|
344 | def _update_prompt_trait(self, traitname, new_template): | |
345 | name = traitname[:-9] # Cut off '_template' |
|
345 | name = traitname[:-9] # Cut off '_template' | |
346 | self.update_prompt(name, new_template) |
|
346 | self.update_prompt(name, new_template) | |
347 |
|
347 | |||
348 | def _render(self, name, color=True, **kwargs): |
|
348 | def _render(self, name, color=True, **kwargs): | |
349 | """Render but don't justify, or update the width or txtwidth attributes. |
|
349 | """Render but don't justify, or update the width or txtwidth attributes. | |
350 | """ |
|
350 | """ | |
351 | if name == 'rewrite': |
|
351 | if name == 'rewrite': | |
352 | return self._render_rewrite(color=color) |
|
352 | return self._render_rewrite(color=color) | |
353 |
|
353 | |||
354 | if color: |
|
354 | if color: | |
355 | scheme = self.color_scheme_table.active_colors |
|
355 | scheme = self.color_scheme_table.active_colors | |
356 | if name=='out': |
|
356 | if name=='out': | |
357 | colors = color_lists['normal'] |
|
357 | colors = color_lists['normal'] | |
358 | colors.number, colors.prompt, colors.normal = \ |
|
358 | colors.number, colors.prompt, colors.normal = \ | |
359 | scheme.out_number, scheme.out_prompt, scheme.normal |
|
359 | scheme.out_number, scheme.out_prompt, scheme.normal | |
360 | else: |
|
360 | else: | |
361 | colors = color_lists['inp'] |
|
361 | colors = color_lists['inp'] | |
362 | colors.number, colors.prompt, colors.normal = \ |
|
362 | colors.number, colors.prompt, colors.normal = \ | |
363 | scheme.in_number, scheme.in_prompt, scheme.in_normal |
|
363 | scheme.in_number, scheme.in_prompt, scheme.in_normal | |
364 | if name=='in2': |
|
364 | if name=='in2': | |
365 | colors.prompt = scheme.in_prompt2 |
|
365 | colors.prompt = scheme.in_prompt2 | |
366 | else: |
|
366 | else: | |
367 | # No color |
|
367 | # No color | |
368 | colors = color_lists['nocolor'] |
|
368 | colors = color_lists['nocolor'] | |
369 | colors.number, colors.prompt, colors.normal = '', '', '' |
|
369 | colors.number, colors.prompt, colors.normal = '', '', '' | |
370 |
|
370 | |||
371 | count = self.shell.execution_count # Shorthand |
|
371 | count = self.shell.execution_count # Shorthand | |
372 | # Build the dictionary to be passed to string formatting |
|
372 | # Build the dictionary to be passed to string formatting | |
373 | fmtargs = dict(color=colors, count=count, |
|
373 | fmtargs = dict(color=colors, count=count, | |
374 | dots="."*len(str(count)), |
|
374 | dots="."*len(str(count)), | |
375 | width=self.width, txtwidth=self.txtwidth ) |
|
375 | width=self.width, txtwidth=self.txtwidth ) | |
376 | fmtargs.update(self.lazy_evaluate_fields) |
|
376 | fmtargs.update(self.lazy_evaluate_fields) | |
377 | fmtargs.update(kwargs) |
|
377 | fmtargs.update(kwargs) | |
378 |
|
378 | |||
379 | # Prepare the prompt |
|
379 | # Prepare the prompt | |
380 | prompt = colors.prompt + self.templates[name] + colors.normal |
|
380 | prompt = colors.prompt + self.templates[name] + colors.normal | |
381 |
|
381 | |||
382 | # Fill in required fields |
|
382 | # Fill in required fields | |
383 | return self._formatter.format(prompt, **fmtargs) |
|
383 | return self._formatter.format(prompt, **fmtargs) | |
384 |
|
384 | |||
385 | def _render_rewrite(self, color=True): |
|
385 | def _render_rewrite(self, color=True): | |
386 | """Render the ---> rewrite prompt.""" |
|
386 | """Render the ---> rewrite prompt.""" | |
387 | if color: |
|
387 | if color: | |
388 | scheme = self.color_scheme_table.active_colors |
|
388 | scheme = self.color_scheme_table.active_colors | |
389 | # We need a non-input version of these escapes |
|
389 | # We need a non-input version of these escapes | |
390 | color_prompt = scheme.in_prompt.replace("\001","").replace("\002","") |
|
390 | color_prompt = scheme.in_prompt.replace("\001","").replace("\002","") | |
391 | color_normal = scheme.normal |
|
391 | color_normal = scheme.normal | |
392 | else: |
|
392 | else: | |
393 | color_prompt, color_normal = '', '' |
|
393 | color_prompt, color_normal = '', '' | |
394 |
|
394 | |||
395 | return color_prompt + "-> ".rjust(self.txtwidth, "-") + color_normal |
|
395 | return color_prompt + "-> ".rjust(self.txtwidth, "-") + color_normal | |
396 |
|
396 | |||
397 | def render(self, name, color=True, just=None, **kwargs): |
|
397 | def render(self, name, color=True, just=None, **kwargs): | |
398 | """ |
|
398 | """ | |
399 | Render the selected prompt. |
|
399 | Render the selected prompt. | |
400 |
|
400 | |||
401 | Parameters |
|
401 | Parameters | |
402 | ---------- |
|
402 | ---------- | |
403 | name : str |
|
403 | name : str | |
404 | Which prompt to render. One of 'in', 'in2', 'out', 'rewrite' |
|
404 | Which prompt to render. One of 'in', 'in2', 'out', 'rewrite' | |
405 | color : bool |
|
405 | color : bool | |
406 | If True (default), include ANSI escape sequences for a coloured prompt. |
|
406 | If True (default), include ANSI escape sequences for a coloured prompt. | |
407 | just : bool |
|
407 | just : bool | |
408 | If True, justify the prompt to the width of the last prompt. The |
|
408 | If True, justify the prompt to the width of the last prompt. The | |
409 | default is stored in self.justify. |
|
409 | default is stored in self.justify. | |
410 | **kwargs : |
|
410 | **kwargs : | |
411 | Additional arguments will be passed to the string formatting operation, |
|
411 | Additional arguments will be passed to the string formatting operation, | |
412 | so they can override the values that would otherwise fill in the |
|
412 | so they can override the values that would otherwise fill in the | |
413 | template. |
|
413 | template. | |
414 |
|
414 | |||
415 | Returns |
|
415 | Returns | |
416 | ------- |
|
416 | ------- | |
417 | A string containing the rendered prompt. |
|
417 | A string containing the rendered prompt. | |
418 | """ |
|
418 | """ | |
419 | res = self._render(name, color=color, **kwargs) |
|
419 | res = self._render(name, color=color, **kwargs) | |
420 |
|
420 | |||
421 | # Handle justification of prompt |
|
421 | # Handle justification of prompt | |
422 | invis_chars = self.invisible_chars[name] if color else 0 |
|
422 | invis_chars = self.invisible_chars[name] if color else 0 | |
423 | self.txtwidth = _lenlastline(res) - invis_chars |
|
423 | self.txtwidth = _lenlastline(res) - invis_chars | |
424 | just = self.justify if (just is None) else just |
|
424 | just = self.justify if (just is None) else just | |
425 | # If the prompt spans more than one line, don't try to justify it: |
|
425 | # If the prompt spans more than one line, don't try to justify it: | |
426 | if just and ('\n' not in res) and ('\r' not in res): |
|
426 | if just and name != 'in' and ('\n' not in res) and ('\r' not in res): | |
427 | res = res.rjust(self.width + invis_chars) |
|
427 | res = res.rjust(self.width + invis_chars) | |
428 | self.width = _lenlastline(res) - invis_chars |
|
428 | self.width = _lenlastline(res) - invis_chars | |
429 | return res |
|
429 | return res |
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