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1 | """Extra magics for terminal use.""" |
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1 | """Extra magics for terminal use.""" | |
2 |
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2 | |||
3 | # Copyright (c) IPython Development Team. |
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3 | # Copyright (c) IPython Development Team. | |
4 | # Distributed under the terms of the Modified BSD License. |
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4 | # Distributed under the terms of the Modified BSD License. | |
5 |
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5 | |||
6 |
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6 | |||
7 | from logging import error |
|
7 | from logging import error | |
8 | import os |
|
8 | import os | |
9 | import sys |
|
9 | import sys | |
10 |
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10 | |||
11 | from IPython.core.error import TryNext, UsageError |
|
11 | from IPython.core.error import TryNext, UsageError | |
12 | from IPython.core.magic import Magics, magics_class, line_magic |
|
12 | from IPython.core.magic import Magics, magics_class, line_magic | |
13 | from IPython.lib.clipboard import ClipboardEmpty |
|
13 | from IPython.lib.clipboard import ClipboardEmpty | |
14 | from IPython.testing.skipdoctest import skip_doctest |
|
14 | from IPython.testing.skipdoctest import skip_doctest | |
15 | from IPython.utils.text import SList, strip_email_quotes |
|
15 | from IPython.utils.text import SList, strip_email_quotes | |
16 | from IPython.utils import py3compat |
|
16 | from IPython.utils import py3compat | |
17 |
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17 | |||
18 | def get_pasted_lines(sentinel, l_input=py3compat.input, quiet=False): |
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18 | def get_pasted_lines(sentinel, l_input=py3compat.input, quiet=False): | |
19 | """ Yield pasted lines until the user enters the given sentinel value. |
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19 | """ Yield pasted lines until the user enters the given sentinel value. | |
20 | """ |
|
20 | """ | |
21 | if not quiet: |
|
21 | if not quiet: | |
22 | print("Pasting code; enter '%s' alone on the line to stop or use Ctrl-D." \ |
|
22 | print("Pasting code; enter '%s' alone on the line to stop or use Ctrl-D." \ | |
23 | % sentinel) |
|
23 | % sentinel) | |
24 | prompt = ":" |
|
24 | prompt = ":" | |
25 | else: |
|
25 | else: | |
26 | prompt = "" |
|
26 | prompt = "" | |
27 | while True: |
|
27 | while True: | |
28 | try: |
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28 | try: | |
29 | l = l_input(prompt) |
|
29 | l = l_input(prompt) | |
30 | if l == sentinel: |
|
30 | if l == sentinel: | |
31 | return |
|
31 | return | |
32 | else: |
|
32 | else: | |
33 | yield l |
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33 | yield l | |
34 | except EOFError: |
|
34 | except EOFError: | |
35 | print('<EOF>') |
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35 | print('<EOF>') | |
36 | return |
|
36 | return | |
37 |
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37 | |||
38 |
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38 | |||
39 | @magics_class |
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39 | @magics_class | |
40 | class TerminalMagics(Magics): |
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40 | class TerminalMagics(Magics): | |
41 | def __init__(self, shell): |
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41 | def __init__(self, shell): | |
42 | super(TerminalMagics, self).__init__(shell) |
|
42 | super(TerminalMagics, self).__init__(shell) | |
43 |
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43 | |||
44 | def store_or_execute(self, block, name, store_history=False): |
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44 | def store_or_execute(self, block, name, store_history=False): | |
45 | """ Execute a block, or store it in a variable, per the user's request. |
|
45 | """ Execute a block, or store it in a variable, per the user's request. | |
46 | """ |
|
46 | """ | |
47 | if name: |
|
47 | if name: | |
48 | # If storing it for further editing |
|
48 | # If storing it for further editing | |
49 | self.shell.user_ns[name] = SList(block.splitlines()) |
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49 | self.shell.user_ns[name] = SList(block.splitlines()) | |
50 | print("Block assigned to '%s'" % name) |
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50 | print("Block assigned to '%s'" % name) | |
51 | else: |
|
51 | else: | |
52 | b = self.preclean_input(block) |
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52 | b = self.preclean_input(block) | |
53 | self.shell.user_ns['pasted_block'] = b |
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53 | self.shell.user_ns['pasted_block'] = b | |
54 | self.shell.using_paste_magics = True |
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54 | self.shell.using_paste_magics = True | |
55 | try: |
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55 | try: | |
56 | self.shell.run_cell(b, store_history) |
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56 | self.shell.run_cell(b, store_history) | |
57 | finally: |
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57 | finally: | |
58 | self.shell.using_paste_magics = False |
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58 | self.shell.using_paste_magics = False | |
59 |
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59 | |||
60 | def preclean_input(self, block): |
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60 | def preclean_input(self, block): | |
61 | lines = block.splitlines() |
|
61 | lines = block.splitlines() | |
62 | while lines and not lines[0].strip(): |
|
62 | while lines and not lines[0].strip(): | |
63 | lines = lines[1:] |
|
63 | lines = lines[1:] | |
64 | return strip_email_quotes('\n'.join(lines)) |
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64 | return strip_email_quotes('\n'.join(lines)) | |
65 |
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65 | |||
66 | def rerun_pasted(self, name='pasted_block'): |
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66 | def rerun_pasted(self, name='pasted_block'): | |
67 | """ Rerun a previously pasted command. |
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67 | """ Rerun a previously pasted command. | |
68 | """ |
|
68 | """ | |
69 | b = self.shell.user_ns.get(name) |
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69 | b = self.shell.user_ns.get(name) | |
70 |
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70 | |||
71 | # Sanity checks |
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71 | # Sanity checks | |
72 | if b is None: |
|
72 | if b is None: | |
73 | raise UsageError('No previous pasted block available') |
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73 | raise UsageError('No previous pasted block available') | |
74 | if not isinstance(b, str): |
|
74 | if not isinstance(b, str): | |
75 | raise UsageError( |
|
75 | raise UsageError( | |
76 | "Variable 'pasted_block' is not a string, can't execute") |
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76 | "Variable 'pasted_block' is not a string, can't execute") | |
77 |
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77 | |||
78 | print("Re-executing '%s...' (%d chars)"% (b.split('\n',1)[0], len(b))) |
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78 | print("Re-executing '%s...' (%d chars)"% (b.split('\n',1)[0], len(b))) | |
79 | self.shell.run_cell(b) |
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79 | self.shell.run_cell(b) | |
80 |
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80 | |||
81 | @line_magic |
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81 | @line_magic | |
82 | def autoindent(self, parameter_s = ''): |
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82 | def autoindent(self, parameter_s = ''): | |
83 | """Toggle autoindent on/off (deprecated)""" |
|
83 | """Toggle autoindent on/off (deprecated)""" | |
84 | self.shell.set_autoindent() |
|
84 | self.shell.set_autoindent() | |
85 | print("Automatic indentation is:",['OFF','ON'][self.shell.autoindent]) |
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85 | print("Automatic indentation is:",['OFF','ON'][self.shell.autoindent]) | |
86 |
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86 | |||
87 | @skip_doctest |
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87 | @skip_doctest | |
88 | @line_magic |
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88 | @line_magic | |
89 | def cpaste(self, parameter_s=''): |
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89 | def cpaste(self, parameter_s=''): | |
90 | """Paste & execute a pre-formatted code block from clipboard. |
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90 | """Paste & execute a pre-formatted code block from clipboard. | |
91 |
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91 | |||
92 | You must terminate the block with '--' (two minus-signs) or Ctrl-D |
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92 | You must terminate the block with '--' (two minus-signs) or Ctrl-D | |
93 | alone on the line. You can also provide your own sentinel with '%paste |
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93 | alone on the line. You can also provide your own sentinel with '%paste | |
94 | -s %%' ('%%' is the new sentinel for this operation). |
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94 | -s %%' ('%%' is the new sentinel for this operation). | |
95 |
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95 | |||
96 | The block is dedented prior to execution to enable execution of method |
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96 | The block is dedented prior to execution to enable execution of method | |
97 | definitions. '>' and '+' characters at the beginning of a line are |
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97 | definitions. '>' and '+' characters at the beginning of a line are | |
98 | ignored, to allow pasting directly from e-mails, diff files and |
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98 | ignored, to allow pasting directly from e-mails, diff files and | |
99 | doctests (the '...' continuation prompt is also stripped). The |
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99 | doctests (the '...' continuation prompt is also stripped). The | |
100 | executed block is also assigned to variable named 'pasted_block' for |
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100 | executed block is also assigned to variable named 'pasted_block' for | |
101 | later editing with '%edit pasted_block'. |
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101 | later editing with '%edit pasted_block'. | |
102 |
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102 | |||
103 | You can also pass a variable name as an argument, e.g. '%cpaste foo'. |
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103 | You can also pass a variable name as an argument, e.g. '%cpaste foo'. | |
104 | This assigns the pasted block to variable 'foo' as string, without |
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104 | This assigns the pasted block to variable 'foo' as string, without | |
105 | dedenting or executing it (preceding >>> and + is still stripped) |
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105 | dedenting or executing it (preceding >>> and + is still stripped) | |
106 |
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106 | |||
107 | '%cpaste -r' re-executes the block previously entered by cpaste. |
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107 | '%cpaste -r' re-executes the block previously entered by cpaste. | |
108 | '%cpaste -q' suppresses any additional output messages. |
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108 | '%cpaste -q' suppresses any additional output messages. | |
109 |
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109 | |||
110 | Do not be alarmed by garbled output on Windows (it's a readline bug). |
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110 | Do not be alarmed by garbled output on Windows (it's a readline bug). | |
111 | Just press enter and type -- (and press enter again) and the block |
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111 | Just press enter and type -- (and press enter again) and the block | |
112 | will be what was just pasted. |
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112 | will be what was just pasted. | |
113 |
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113 | |||
114 | Shell escapes are not supported (yet). |
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114 | Shell escapes are not supported (yet). | |
115 |
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115 | |||
116 | See Also |
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116 | See Also | |
117 | -------- |
|
117 | -------- | |
118 | paste : automatically pull code from clipboard. |
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118 | paste : automatically pull code from clipboard. | |
119 |
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119 | |||
120 | Examples |
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120 | Examples | |
121 | -------- |
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121 | -------- | |
122 | :: |
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122 | :: | |
123 |
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123 | |||
124 | In [8]: %cpaste |
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124 | In [8]: %cpaste | |
125 | Pasting code; enter '--' alone on the line to stop. |
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125 | Pasting code; enter '--' alone on the line to stop. | |
126 | :>>> a = ["world!", "Hello"] |
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126 | :>>> a = ["world!", "Hello"] | |
127 | :>>> print(" ".join(sorted(a))) |
|
127 | :>>> print(" ".join(sorted(a))) | |
128 | :-- |
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128 | :-- | |
129 | Hello world! |
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129 | Hello world! | |
130 |
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130 | |||
131 | :: |
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131 | :: | |
132 | In [8]: %cpaste |
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132 | In [8]: %cpaste | |
133 | Pasting code; enter '--' alone on the line to stop. |
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133 | Pasting code; enter '--' alone on the line to stop. | |
134 | :>>> %alias_magic t timeit |
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134 | :>>> %alias_magic t timeit | |
135 | :>>> %t -n1 pass |
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135 | :>>> %t -n1 pass | |
136 | :-- |
|
136 | :-- | |
137 | Created `%t` as an alias for `%timeit`. |
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137 | Created `%t` as an alias for `%timeit`. | |
138 | Created `%%t` as an alias for `%%timeit`. |
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138 | Created `%%t` as an alias for `%%timeit`. | |
139 | 354 ns ± 224 ns per loop (mean ± std. dev. of 7 runs, 1 loop each) |
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139 | 354 ns ± 224 ns per loop (mean ± std. dev. of 7 runs, 1 loop each) | |
140 | """ |
|
140 | """ | |
141 | opts, name = self.parse_options(parameter_s, 'rqs:', mode='string') |
|
141 | opts, name = self.parse_options(parameter_s, 'rqs:', mode='string') | |
142 | if 'r' in opts: |
|
142 | if 'r' in opts: | |
143 | self.rerun_pasted() |
|
143 | self.rerun_pasted() | |
144 | return |
|
144 | return | |
145 |
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145 | |||
146 | quiet = ('q' in opts) |
|
146 | quiet = ('q' in opts) | |
147 |
|
147 | |||
148 | sentinel = opts.get('s', u'--') |
|
148 | sentinel = opts.get('s', u'--') | |
149 | block = '\n'.join(get_pasted_lines(sentinel, quiet=quiet)) |
|
149 | block = '\n'.join(get_pasted_lines(sentinel, quiet=quiet)) | |
150 |
self.store_or_execute(block, name, store_history= |
|
150 | self.store_or_execute(block, name, store_history=True) | |
151 |
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151 | |||
152 | @line_magic |
|
152 | @line_magic | |
153 | def paste(self, parameter_s=''): |
|
153 | def paste(self, parameter_s=''): | |
154 | """Paste & execute a pre-formatted code block from clipboard. |
|
154 | """Paste & execute a pre-formatted code block from clipboard. | |
155 |
|
155 | |||
156 | The text is pulled directly from the clipboard without user |
|
156 | The text is pulled directly from the clipboard without user | |
157 | intervention and printed back on the screen before execution (unless |
|
157 | intervention and printed back on the screen before execution (unless | |
158 | the -q flag is given to force quiet mode). |
|
158 | the -q flag is given to force quiet mode). | |
159 |
|
159 | |||
160 | The block is dedented prior to execution to enable execution of method |
|
160 | The block is dedented prior to execution to enable execution of method | |
161 | definitions. '>' and '+' characters at the beginning of a line are |
|
161 | definitions. '>' and '+' characters at the beginning of a line are | |
162 | ignored, to allow pasting directly from e-mails, diff files and |
|
162 | ignored, to allow pasting directly from e-mails, diff files and | |
163 | doctests (the '...' continuation prompt is also stripped). The |
|
163 | doctests (the '...' continuation prompt is also stripped). The | |
164 | executed block is also assigned to variable named 'pasted_block' for |
|
164 | executed block is also assigned to variable named 'pasted_block' for | |
165 | later editing with '%edit pasted_block'. |
|
165 | later editing with '%edit pasted_block'. | |
166 |
|
166 | |||
167 | You can also pass a variable name as an argument, e.g. '%paste foo'. |
|
167 | You can also pass a variable name as an argument, e.g. '%paste foo'. | |
168 | This assigns the pasted block to variable 'foo' as string, without |
|
168 | This assigns the pasted block to variable 'foo' as string, without | |
169 | executing it (preceding >>> and + is still stripped). |
|
169 | executing it (preceding >>> and + is still stripped). | |
170 |
|
170 | |||
171 | Options: |
|
171 | Options: | |
172 |
|
172 | |||
173 | -r: re-executes the block previously entered by cpaste. |
|
173 | -r: re-executes the block previously entered by cpaste. | |
174 |
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174 | |||
175 | -q: quiet mode: do not echo the pasted text back to the terminal. |
|
175 | -q: quiet mode: do not echo the pasted text back to the terminal. | |
176 |
|
176 | |||
177 | IPython statements (magics, shell escapes) are not supported (yet). |
|
177 | IPython statements (magics, shell escapes) are not supported (yet). | |
178 |
|
178 | |||
179 | See Also |
|
179 | See Also | |
180 | -------- |
|
180 | -------- | |
181 | cpaste : manually paste code into terminal until you mark its end. |
|
181 | cpaste : manually paste code into terminal until you mark its end. | |
182 | """ |
|
182 | """ | |
183 | opts, name = self.parse_options(parameter_s, 'rq', mode='string') |
|
183 | opts, name = self.parse_options(parameter_s, 'rq', mode='string') | |
184 | if 'r' in opts: |
|
184 | if 'r' in opts: | |
185 | self.rerun_pasted() |
|
185 | self.rerun_pasted() | |
186 | return |
|
186 | return | |
187 | try: |
|
187 | try: | |
188 | block = self.shell.hooks.clipboard_get() |
|
188 | block = self.shell.hooks.clipboard_get() | |
189 | except TryNext as clipboard_exc: |
|
189 | except TryNext as clipboard_exc: | |
190 | message = getattr(clipboard_exc, 'args') |
|
190 | message = getattr(clipboard_exc, 'args') | |
191 | if message: |
|
191 | if message: | |
192 | error(message[0]) |
|
192 | error(message[0]) | |
193 | else: |
|
193 | else: | |
194 | error('Could not get text from the clipboard.') |
|
194 | error('Could not get text from the clipboard.') | |
195 | return |
|
195 | return | |
196 | except ClipboardEmpty as e: |
|
196 | except ClipboardEmpty as e: | |
197 | raise UsageError("The clipboard appears to be empty") from e |
|
197 | raise UsageError("The clipboard appears to be empty") from e | |
198 |
|
198 | |||
199 | # By default, echo back to terminal unless quiet mode is requested |
|
199 | # By default, echo back to terminal unless quiet mode is requested | |
200 | if 'q' not in opts: |
|
200 | if 'q' not in opts: | |
201 | sys.stdout.write(self.shell.pycolorize(block)) |
|
201 | sys.stdout.write(self.shell.pycolorize(block)) | |
202 | if not block.endswith("\n"): |
|
202 | if not block.endswith("\n"): | |
203 | sys.stdout.write("\n") |
|
203 | sys.stdout.write("\n") | |
204 | sys.stdout.write("## -- End pasted text --\n") |
|
204 | sys.stdout.write("## -- End pasted text --\n") | |
205 |
|
205 | |||
206 | self.store_or_execute(block, name, store_history=True) |
|
206 | self.store_or_execute(block, name, store_history=True) | |
207 |
|
207 | |||
208 | # Class-level: add a '%cls' magic only on Windows |
|
208 | # Class-level: add a '%cls' magic only on Windows | |
209 | if sys.platform == 'win32': |
|
209 | if sys.platform == 'win32': | |
210 | @line_magic |
|
210 | @line_magic | |
211 | def cls(self, s): |
|
211 | def cls(self, s): | |
212 | """Clear screen. |
|
212 | """Clear screen. | |
213 | """ |
|
213 | """ | |
214 | os.system("cls") |
|
214 | os.system("cls") |
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