/usr/lib/python2.7/dist-packages/pygments/lexers/diff.py is in python-pygments 2.2.0+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | # -*- coding: utf-8 -*-
"""
pygments.lexers.diff
~~~~~~~~~~~~~~~~~~~~
Lexers for diff/patch formats.
:copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, bygroups
from pygments.token import Text, Comment, Operator, Keyword, Name, Generic, \
Literal
__all__ = ['DiffLexer', 'DarcsPatchLexer', 'WDiffLexer']
class DiffLexer(RegexLexer):
"""
Lexer for unified or context-style diffs or patches.
"""
name = 'Diff'
aliases = ['diff', 'udiff']
filenames = ['*.diff', '*.patch']
mimetypes = ['text/x-diff', 'text/x-patch']
tokens = {
'root': [
(r' .*\n', Text),
(r'\+.*\n', Generic.Inserted),
(r'-.*\n', Generic.Deleted),
(r'!.*\n', Generic.Strong),
(r'@.*\n', Generic.Subheading),
(r'([Ii]ndex|diff).*\n', Generic.Heading),
(r'=.*\n', Generic.Heading),
(r'.*\n', Text),
]
}
def analyse_text(text):
if text[:7] == 'Index: ':
return True
if text[:5] == 'diff ':
return True
if text[:4] == '--- ':
return 0.9
class DarcsPatchLexer(RegexLexer):
"""
DarcsPatchLexer is a lexer for the various versions of the darcs patch
format. Examples of this format are derived by commands such as
``darcs annotate --patch`` and ``darcs send``.
.. versionadded:: 0.10
"""
name = 'Darcs Patch'
aliases = ['dpatch']
filenames = ['*.dpatch', '*.darcspatch']
DPATCH_KEYWORDS = ('hunk', 'addfile', 'adddir', 'rmfile', 'rmdir', 'move',
'replace')
tokens = {
'root': [
(r'<', Operator),
(r'>', Operator),
(r'\{', Operator),
(r'\}', Operator),
(r'(\[)((?:TAG )?)(.*)(\n)(.*)(\*\*)(\d+)(\s?)(\])',
bygroups(Operator, Keyword, Name, Text, Name, Operator,
Literal.Date, Text, Operator)),
(r'(\[)((?:TAG )?)(.*)(\n)(.*)(\*\*)(\d+)(\s?)',
bygroups(Operator, Keyword, Name, Text, Name, Operator,
Literal.Date, Text), 'comment'),
(r'New patches:', Generic.Heading),
(r'Context:', Generic.Heading),
(r'Patch bundle hash:', Generic.Heading),
(r'(\s*)(%s)(.*\n)' % '|'.join(DPATCH_KEYWORDS),
bygroups(Text, Keyword, Text)),
(r'\+', Generic.Inserted, "insert"),
(r'-', Generic.Deleted, "delete"),
(r'.*\n', Text),
],
'comment': [
(r'[^\]].*\n', Comment),
(r'\]', Operator, "#pop"),
],
'specialText': [ # darcs add [_CODE_] special operators for clarity
(r'\n', Text, "#pop"), # line-based
(r'\[_[^_]*_]', Operator),
],
'insert': [
include('specialText'),
(r'\[', Generic.Inserted),
(r'[^\n\[]+', Generic.Inserted),
],
'delete': [
include('specialText'),
(r'\[', Generic.Deleted),
(r'[^\n\[]+', Generic.Deleted),
],
}
class WDiffLexer(RegexLexer):
"""
A `wdiff <https://www.gnu.org/software/wdiff/>`_ lexer.
Note that:
* only to normal output (without option like -l).
* if target files of wdiff contain "[-", "-]", "{+", "+}",
especially they are unbalanced, this lexer will get confusing.
.. versionadded:: 2.2
"""
name = 'WDiff'
aliases = ['wdiff']
filenames = ['*.wdiff']
mimetypes = []
flags = re.MULTILINE | re.DOTALL
# We can only assume "[-" after "[-" before "-]" is `nested`,
# for instance wdiff to wdiff outputs. We have no way to
# distinct these marker is of wdiff output from original text.
ins_op = r"\{\+"
ins_cl = r"\+\}"
del_op = r"\[\-"
del_cl = r"\-\]"
normal = r'[^{}[\]+-]+' # for performance
tokens = {
'root': [
(ins_op, Generic.Inserted, 'inserted'),
(del_op, Generic.Deleted, 'deleted'),
(normal, Text),
(r'.', Text),
],
'inserted': [
(ins_op, Generic.Inserted, '#push'),
(del_op, Generic.Inserted, '#push'),
(del_cl, Generic.Inserted, '#pop'),
(ins_cl, Generic.Inserted, '#pop'),
(normal, Generic.Inserted),
(r'.', Generic.Inserted),
],
'deleted': [
(del_op, Generic.Deleted, '#push'),
(ins_op, Generic.Deleted, '#push'),
(ins_cl, Generic.Deleted, '#pop'),
(del_cl, Generic.Deleted, '#pop'),
(normal, Generic.Deleted),
(r'.', Generic.Deleted),
],
}
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