Mercurial > kallithea
annotate rhodecode/lib/diffs.py @ 4086:4ec370789b3e
added larger buffers for example uwsgi setup
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Tue, 09 Jul 2013 19:48:42 +0200 |
parents | bea9d8be4c7f |
children | a5888ca796b5 |
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1 # -*- coding: utf-8 -*- |
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2 """ |
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3 rhodecode.lib.diffs |
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4 ~~~~~~~~~~~~~~~~~~~ |
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5 |
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6 Set of diffing helpers, previously part of vcs |
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7 |
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8 |
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9 :created_on: Dec 4, 2011 |
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10 :author: marcink |
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2012 copyrights
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11 :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com> |
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12 :original copyright: 2007-2008 by Armin Ronacher |
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13 :license: GPLv3, see COPYING for more details. |
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14 """ |
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15 # This program is free software: you can redistribute it and/or modify |
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16 # it under the terms of the GNU General Public License as published by |
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17 # the Free Software Foundation, either version 3 of the License, or |
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18 # (at your option) any later version. |
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19 # |
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20 # This program is distributed in the hope that it will be useful, |
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21 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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23 # GNU General Public License for more details. |
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24 # |
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25 # You should have received a copy of the GNU General Public License |
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26 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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27 |
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28 import re |
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29 import difflib |
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30 import logging |
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31 |
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32 from itertools import tee, imap |
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33 |
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34 from pylons.i18n.translation import _ |
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35 |
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36 from rhodecode.lib.vcs.exceptions import VCSError |
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37 from rhodecode.lib.vcs.nodes import FileNode, SubModuleNode |
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38 from rhodecode.lib.vcs.backends.base import EmptyChangeset |
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39 from rhodecode.lib.helpers import escape |
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40 from rhodecode.lib.utils2 import safe_unicode, safe_str |
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41 |
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42 log = logging.getLogger(__name__) |
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43 |
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44 |
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45 def wrap_to_table(str_): |
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46 return '''<table class="code-difftable"> |
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47 <tr class="line no-comment"> |
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48 <td class="lineno new"></td> |
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49 <td class="code no-comment"><pre>%s</pre></td> |
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50 </tr> |
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51 </table>''' % str_ |
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52 |
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53 |
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54 def wrapped_diff(filenode_old, filenode_new, cut_off_limit=None, |
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55 ignore_whitespace=True, line_context=3, |
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56 enable_comments=False): |
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57 """ |
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58 returns a wrapped diff into a table, checks for cut_off_limit and presents |
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59 proper message |
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60 """ |
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61 |
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62 if filenode_old is None: |
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63 filenode_old = FileNode(filenode_new.path, '', EmptyChangeset()) |
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64 |
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65 if filenode_old.is_binary or filenode_new.is_binary: |
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66 diff = wrap_to_table(_('Binary file')) |
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67 stats = (0, 0) |
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68 size = 0 |
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69 |
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70 elif cut_off_limit != -1 and (cut_off_limit is None or |
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71 (filenode_old.size < cut_off_limit and filenode_new.size < cut_off_limit)): |
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72 |
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73 f_gitdiff = get_gitdiff(filenode_old, filenode_new, |
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74 ignore_whitespace=ignore_whitespace, |
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75 context=line_context) |
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76 diff_processor = DiffProcessor(f_gitdiff, format='gitdiff') |
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77 |
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78 diff = diff_processor.as_html(enable_comments=enable_comments) |
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79 stats = diff_processor.stat() |
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80 size = len(diff or '') |
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81 else: |
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82 diff = wrap_to_table(_('Changeset was too big and was cut off, use ' |
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83 'diff menu to display this diff')) |
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84 stats = (0, 0) |
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85 size = 0 |
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86 if not diff: |
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87 submodules = filter(lambda o: isinstance(o, SubModuleNode), |
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88 [filenode_new, filenode_old]) |
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89 if submodules: |
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90 diff = wrap_to_table(escape('Submodule %r' % submodules[0])) |
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91 else: |
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92 diff = wrap_to_table(_('No changes detected')) |
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93 |
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94 cs1 = filenode_old.changeset.raw_id |
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95 cs2 = filenode_new.changeset.raw_id |
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96 |
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97 return size, cs1, cs2, diff, stats |
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98 |
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99 |
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100 def get_gitdiff(filenode_old, filenode_new, ignore_whitespace=True, context=3): |
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101 """ |
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102 Returns git style diff between given ``filenode_old`` and ``filenode_new``. |
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103 |
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104 :param ignore_whitespace: ignore whitespaces in diff |
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105 """ |
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106 # make sure we pass in default context |
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107 context = context or 3 |
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108 submodules = filter(lambda o: isinstance(o, SubModuleNode), |
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109 [filenode_new, filenode_old]) |
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110 if submodules: |
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111 return '' |
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112 |
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113 for filenode in (filenode_old, filenode_new): |
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114 if not isinstance(filenode, FileNode): |
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115 raise VCSError("Given object should be FileNode object, not %s" |
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116 % filenode.__class__) |
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117 |
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118 repo = filenode_new.changeset.repository |
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119 old_raw_id = getattr(filenode_old.changeset, 'raw_id', repo.EMPTY_CHANGESET) |
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120 new_raw_id = getattr(filenode_new.changeset, 'raw_id', repo.EMPTY_CHANGESET) |
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121 |
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122 vcs_gitdiff = repo.get_diff(old_raw_id, new_raw_id, filenode_new.path, |
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123 ignore_whitespace, context) |
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124 return vcs_gitdiff |
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125 |
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126 NEW_FILENODE = 1 |
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127 DEL_FILENODE = 2 |
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128 MOD_FILENODE = 3 |
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129 RENAMED_FILENODE = 4 |
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130 COPIED_FILENODE = 5 |
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131 CHMOD_FILENODE = 6 |
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132 BIN_FILENODE = 7 |
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133 |
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134 |
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135 class DiffLimitExceeded(Exception): |
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136 pass |
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137 |
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138 |
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139 class LimitedDiffContainer(object): |
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140 |
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141 def __init__(self, diff_limit, cur_diff_size, diff): |
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142 self.diff = diff |
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143 self.diff_limit = diff_limit |
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144 self.cur_diff_size = cur_diff_size |
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145 |
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146 def __iter__(self): |
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147 for l in self.diff: |
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148 yield l |
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149 |
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150 |
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151 class DiffProcessor(object): |
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152 """ |
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153 Give it a unified or git diff and it returns a list of the files that were |
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154 mentioned in the diff together with a dict of meta information that |
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155 can be used to render it in a HTML template. |
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156 """ |
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157 _chunk_re = re.compile(r'^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@(.*)') |
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158 _newline_marker = re.compile(r'^\\ No newline at end of file') |
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159 _git_header_re = re.compile(r""" |
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160 #^diff[ ]--git |
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161 [ ]a/(?P<a_path>.+?)[ ]b/(?P<b_path>.+?)\n |
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162 (?:^similarity[ ]index[ ](?P<similarity_index>\d+)%\n |
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163 ^rename[ ]from[ ](?P<rename_from>\S+)\n |
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164 ^rename[ ]to[ ](?P<rename_to>\S+)(?:\n|$))? |
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165 (?:^old[ ]mode[ ](?P<old_mode>\d+)\n |
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166 ^new[ ]mode[ ](?P<new_mode>\d+)(?:\n|$))? |
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167 (?:^new[ ]file[ ]mode[ ](?P<new_file_mode>.+)(?:\n|$))? |
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168 (?:^deleted[ ]file[ ]mode[ ](?P<deleted_file_mode>.+)(?:\n|$))? |
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169 (?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+) |
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170 \.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))? |
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171 (?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))? |
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172 (?:^---[ ](a/(?P<a_file>.+)|/dev/null)(?:\n|$))? |
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173 (?:^\+\+\+[ ](b/(?P<b_file>.+)|/dev/null)(?:\n|$))? |
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174 """, re.VERBOSE | re.MULTILINE) |
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175 _hg_header_re = re.compile(r""" |
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176 #^diff[ ]--git |
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177 [ ]a/(?P<a_path>.+?)[ ]b/(?P<b_path>.+?)\n |
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178 (?:^old[ ]mode[ ](?P<old_mode>\d+)\n |
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179 ^new[ ]mode[ ](?P<new_mode>\d+)(?:\n|$))? |
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180 (?:^similarity[ ]index[ ](?P<similarity_index>\d+)%(?:\n|$))? |
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181 (?:^rename[ ]from[ ](?P<rename_from>\S+)\n |
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182 ^rename[ ]to[ ](?P<rename_to>\S+)(?:\n|$))? |
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183 (?:^copy[ ]from[ ](?P<copy_from>\S+)\n |
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184 ^copy[ ]to[ ](?P<copy_to>\S+)(?:\n|$))? |
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185 (?:^new[ ]file[ ]mode[ ](?P<new_file_mode>.+)(?:\n|$))? |
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186 (?:^deleted[ ]file[ ]mode[ ](?P<deleted_file_mode>.+)(?:\n|$))? |
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187 (?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+) |
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188 \.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))? |
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189 (?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))? |
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190 (?:^---[ ](a/(?P<a_file>.+)|/dev/null)(?:\n|$))? |
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191 (?:^\+\+\+[ ](b/(?P<b_file>.+)|/dev/null)(?:\n|$))? |
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192 """, re.VERBOSE | re.MULTILINE) |
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193 |
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194 #used for inline highlighter word split |
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195 _token_re = re.compile(r'()(>|<|&|\W+?)') |
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196 |
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197 def __init__(self, diff, vcs='hg', format='gitdiff', diff_limit=None): |
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198 """ |
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199 :param diff: a text in diff format |
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200 :param vcs: type of version controll hg or git |
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201 :param format: format of diff passed, `udiff` or `gitdiff` |
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202 :param diff_limit: define the size of diff that is considered "big" |
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203 based on that parameter cut off will be triggered, set to None |
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204 to show full diff |
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205 """ |
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206 if not isinstance(diff, basestring): |
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207 raise Exception('Diff must be a basestring got %s instead' % type(diff)) |
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208 |
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209 self._diff = diff |
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210 self._format = format |
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211 self.adds = 0 |
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212 self.removes = 0 |
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213 # calculate diff size |
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214 self.diff_size = len(diff) |
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215 self.diff_limit = diff_limit |
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216 self.cur_diff_size = 0 |
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217 self.parsed = False |
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218 self.parsed_diff = [] |
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219 self.vcs = vcs |
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220 |
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221 if format == 'gitdiff': |
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222 self.differ = self._highlight_line_difflib |
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223 self._parser = self._parse_gitdiff |
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224 else: |
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225 self.differ = self._highlight_line_udiff |
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226 self._parser = self._parse_udiff |
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227 |
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228 def _copy_iterator(self): |
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229 """ |
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230 make a fresh copy of generator, we should not iterate thru |
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231 an original as it's needed for repeating operations on |
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232 this instance of DiffProcessor |
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233 """ |
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234 self.__udiff, iterator_copy = tee(self.__udiff) |
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235 return iterator_copy |
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236 |
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237 def _escaper(self, string): |
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238 """ |
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239 Escaper for diff escapes special chars and checks the diff limit |
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240 |
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241 :param string: |
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242 """ |
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243 |
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244 self.cur_diff_size += len(string) |
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245 |
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246 # escaper get's iterated on each .next() call and it checks if each |
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247 # parsed line doesn't exceed the diff limit |
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248 if self.diff_limit is not None and self.cur_diff_size > self.diff_limit: |
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249 raise DiffLimitExceeded('Diff Limit Exceeded') |
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250 |
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251 return safe_unicode(string).replace('&', '&')\ |
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252 .replace('<', '<')\ |
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253 .replace('>', '>') |
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254 |
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255 def _line_counter(self, l): |
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256 """ |
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257 Checks each line and bumps total adds/removes for this diff |
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258 |
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259 :param l: |
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260 """ |
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261 if l.startswith('+') and not l.startswith('+++'): |
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262 self.adds += 1 |
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263 elif l.startswith('-') and not l.startswith('---'): |
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264 self.removes += 1 |
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265 return safe_unicode(l) |
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266 |
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267 def _highlight_line_difflib(self, line, next_): |
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268 """ |
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269 Highlight inline changes in both lines. |
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270 """ |
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271 |
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272 if line['action'] == 'del': |
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273 old, new = line, next_ |
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274 else: |
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275 old, new = next_, line |
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276 |
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277 oldwords = self._token_re.split(old['line']) |
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278 newwords = self._token_re.split(new['line']) |
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279 sequence = difflib.SequenceMatcher(None, oldwords, newwords) |
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280 |
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281 oldfragments, newfragments = [], [] |
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282 for tag, i1, i2, j1, j2 in sequence.get_opcodes(): |
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283 oldfrag = ''.join(oldwords[i1:i2]) |
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284 newfrag = ''.join(newwords[j1:j2]) |
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285 if tag != 'equal': |
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286 if oldfrag: |
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287 oldfrag = '<del>%s</del>' % oldfrag |
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288 if newfrag: |
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289 newfrag = '<ins>%s</ins>' % newfrag |
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290 oldfragments.append(oldfrag) |
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291 newfragments.append(newfrag) |
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292 |
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293 old['line'] = "".join(oldfragments) |
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294 new['line'] = "".join(newfragments) |
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295 |
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296 def _highlight_line_udiff(self, line, next_): |
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297 """ |
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298 Highlight inline changes in both lines. |
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299 """ |
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300 start = 0 |
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301 limit = min(len(line['line']), len(next_['line'])) |
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302 while start < limit and line['line'][start] == next_['line'][start]: |
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303 start += 1 |
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304 end = -1 |
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305 limit -= start |
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306 while -end <= limit and line['line'][end] == next_['line'][end]: |
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307 end -= 1 |
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308 end += 1 |
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309 if start or end: |
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310 def do(l): |
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311 last = end + len(l['line']) |
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312 if l['action'] == 'add': |
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313 tag = 'ins' |
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314 else: |
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315 tag = 'del' |
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316 l['line'] = '%s<%s>%s</%s>%s' % ( |
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317 l['line'][:start], |
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318 tag, |
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319 l['line'][start:last], |
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320 tag, |
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321 l['line'][last:] |
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322 ) |
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323 do(line) |
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324 do(next_) |
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325 |
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326 def _get_header(self, diff_chunk): |
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327 """ |
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328 parses the diff header, and returns parts, and leftover diff |
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329 parts consists of 14 elements:: |
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330 |
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331 a_path, b_path, similarity_index, rename_from, rename_to, |
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332 old_mode, new_mode, new_file_mode, deleted_file_mode, |
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333 a_blob_id, b_blob_id, b_mode, a_file, b_file |
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334 |
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335 :param diff_chunk: |
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336 """ |
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337 |
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338 if self.vcs == 'git': |
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339 match = self._git_header_re.match(diff_chunk) |
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340 diff = diff_chunk[match.end():] |
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341 return match.groupdict(), imap(self._escaper, diff.splitlines(1)) |
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342 elif self.vcs == 'hg': |
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343 match = self._hg_header_re.match(diff_chunk) |
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344 diff = diff_chunk[match.end():] |
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345 return match.groupdict(), imap(self._escaper, diff.splitlines(1)) |
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346 else: |
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347 raise Exception('VCS type %s is not supported' % self.vcs) |
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348 |
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349 def _clean_line(self, line, command): |
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350 if command in ['+', '-', ' ']: |
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351 #only modify the line if it's actually a diff thing |
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352 line = line[1:] |
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353 return line |
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354 |
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355 def _parse_gitdiff(self, inline_diff=True): |
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356 _files = [] |
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357 diff_container = lambda arg: arg |
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358 |
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359 ##split the diff in chunks of separate --git a/file b/file chunks |
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360 for raw_diff in ('\n' + self._diff).split('\ndiff --git')[1:]: |
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361 head, diff = self._get_header(raw_diff) |
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362 |
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363 op = None |
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364 stats = { |
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365 'added': 0, |
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366 'deleted': 0, |
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367 'binary': False, |
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368 'ops': {}, |
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369 } |
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370 |
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371 if head['deleted_file_mode']: |
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372 op = 'D' |
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373 stats['binary'] = True |
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374 stats['ops'][DEL_FILENODE] = 'deleted file' |
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375 |
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376 elif head['new_file_mode']: |
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377 op = 'A' |
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378 stats['binary'] = True |
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379 stats['ops'][NEW_FILENODE] = 'new file %s' % head['new_file_mode'] |
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380 else: # modify operation, can be cp, rename, chmod |
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381 # CHMOD |
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382 if head['new_mode'] and head['old_mode']: |
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383 op = 'M' |
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384 stats['binary'] = True |
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385 stats['ops'][CHMOD_FILENODE] = ('modified file chmod %s => %s' |
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386 % (head['old_mode'], head['new_mode'])) |
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387 # RENAME |
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388 if (head['rename_from'] and head['rename_to'] |
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389 and head['rename_from'] != head['rename_to']): |
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390 op = 'M' |
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391 stats['binary'] = True |
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392 stats['ops'][RENAMED_FILENODE] = ('file renamed from %s to %s' |
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393 % (head['rename_from'], head['rename_to'])) |
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394 # COPY |
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395 if head.get('copy_from') and head.get('copy_to'): |
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396 op = 'M' |
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397 stats['binary'] = True |
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398 stats['ops'][COPIED_FILENODE] = ('file copied from %s to %s' |
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399 % (head['copy_from'], head['copy_to'])) |
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400 # FALL BACK: detect missed old style add or remove |
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401 if op is None: |
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402 if not head['a_file'] and head['b_file']: |
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403 op = 'A' |
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404 stats['binary'] = True |
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405 stats['ops'][NEW_FILENODE] = 'new file' |
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406 |
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407 elif head['a_file'] and not head['b_file']: |
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408 op = 'D' |
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409 stats['binary'] = True |
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410 stats['ops'][DEL_FILENODE] = 'deleted file' |
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411 |
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412 # it's not ADD not DELETE |
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413 if op is None: |
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414 op = 'M' |
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415 stats['binary'] = True |
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416 stats['ops'][MOD_FILENODE] = 'modified file' |
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417 |
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418 # a real non-binary diff |
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419 if head['a_file'] or head['b_file']: |
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420 try: |
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421 chunks, _stats = self._parse_lines(diff) |
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422 stats['binary'] = False |
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423 stats['added'] = _stats[0] |
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424 stats['deleted'] = _stats[1] |
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425 # explicit mark that it's a modified file |
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426 if op == 'M': |
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427 stats['ops'][MOD_FILENODE] = 'modified file' |
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428 |
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429 except DiffLimitExceeded: |
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430 diff_container = lambda _diff: \ |
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431 LimitedDiffContainer(self.diff_limit, |
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432 self.cur_diff_size, _diff) |
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433 break |
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434 else: # GIT binary patch (or empty diff) |
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435 # GIT Binary patch |
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436 if head['bin_patch']: |
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437 stats['ops'][BIN_FILENODE] = 'binary diff not shown' |
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438 chunks = [] |
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439 |
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440 if op == 'D' and chunks: |
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Mads Kiilerich <madski@unity3d.com>
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4013
diff
changeset
|
441 chunks = [] |
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diff: don't show content of deleted files
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|
442 |
3821
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diff parser: redefined operations stats for changes
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443 chunks.insert(0, [{ |
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444 'old_lineno': '', |
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445 'new_lineno': '', |
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446 'action': 'context', |
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447 'line': msg, |
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448 } for _op, msg in stats['ops'].iteritems() |
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449 if _op not in [MOD_FILENODE]]) |
1753
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moved soon-to-be-deleted code from vcs to rhodecode
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changeset
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450 |
2995
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451 _files.append({ |
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452 'filename': head['b_path'], |
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453 'old_revision': head['a_blob_id'], |
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454 'new_revision': head['b_blob_id'], |
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455 'chunks': chunks, |
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456 'operation': op, |
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457 'stats': stats, |
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458 }) |
1753
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moved soon-to-be-deleted code from vcs to rhodecode
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changeset
|
459 |
2385
a455b2c79c85
Improved RSS/ATOM feeds
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2360
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|
460 sorter = lambda info: {'A': 0, 'M': 1, 'D': 2}.get(info['operation']) |
2995
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|
461 |
3625
260a7a01b054
follow Python conventions for boolean values
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462 if not inline_diff: |
2995
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463 return diff_container(sorted(_files, key=sorter)) |
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Improved RSS/ATOM feeds
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changeset
|
464 |
1753
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moved soon-to-be-deleted code from vcs to rhodecode
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465 # highlight inline changes |
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466 for diff_data in _files: |
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467 for chunk in diff_data['chunks']: |
1753
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moved soon-to-be-deleted code from vcs to rhodecode
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468 lineiter = iter(chunk) |
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moved soon-to-be-deleted code from vcs to rhodecode
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469 try: |
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|
470 while 1: |
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471 line = lineiter.next() |
2566
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fix strikethrough issues on `No new line at end of file`
Marcin Kuzminski <marcin@python-works.com>
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2552
diff
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472 if line['action'] not in ['unmod', 'context']: |
1753
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moved soon-to-be-deleted code from vcs to rhodecode
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473 nextline = lineiter.next() |
2360
c15c3430df74
fixed issue with git's `no new line..` messages inside diff block. It might sometimes happen that showed html diff was short one line because of this
Marcin Kuzminski <marcin@python-works.com>
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changeset
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474 if nextline['action'] in ['unmod', 'context'] or \ |
1753
1d1ccb873d00
moved soon-to-be-deleted code from vcs to rhodecode
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475 nextline['action'] == line['action']: |
1d1ccb873d00
moved soon-to-be-deleted code from vcs to rhodecode
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476 continue |
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|
477 self.differ(line, nextline) |
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moved soon-to-be-deleted code from vcs to rhodecode
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478 except StopIteration: |
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479 pass |
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|
480 |
2995
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481 return diff_container(sorted(_files, key=sorter)) |
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changeset
|
482 |
2995
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483 def _parse_udiff(self, inline_diff=True): |
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484 raise NotImplementedError() |
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485 |
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486 def _parse_lines(self, diff): |
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487 """ |
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488 Parse the diff an return data for the template. |
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489 """ |
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490 |
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491 lineiter = iter(diff) |
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492 stats = [0, 0] |
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|
493 |
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494 try: |
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495 chunks = [] |
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496 line = lineiter.next() |
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|
497 |
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498 while line: |
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|
499 lines = [] |
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500 chunks.append(lines) |
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|
501 |
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|
502 match = self._chunk_re.match(line) |
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changeset
|
503 |
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changeset
|
504 if not match: |
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changeset
|
505 break |
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diff
changeset
|
506 |
32471bd1f4ee
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|
507 gr = match.groups() |
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diff
changeset
|
508 (old_line, old_end, |
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changeset
|
509 new_line, new_end) = [int(x or 1) for x in gr[:-1]] |
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|
510 old_line -= 1 |
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|
511 new_line -= 1 |
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|
512 |
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changeset
|
513 context = len(gr) == 5 |
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|
514 old_end += old_line |
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|
515 new_end += new_line |
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changeset
|
516 |
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Implemented generation of changesets based
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changeset
|
517 if context: |
32471bd1f4ee
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changeset
|
518 # skip context only if it's first line |
32471bd1f4ee
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|
519 if int(gr[0]) > 1: |
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changeset
|
520 lines.append({ |
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changeset
|
521 'old_lineno': '...', |
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diff
changeset
|
522 'new_lineno': '...', |
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|
523 'action': 'context', |
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changeset
|
524 'line': line, |
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changeset
|
525 }) |
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changeset
|
526 |
32471bd1f4ee
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|
527 line = lineiter.next() |
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diff
changeset
|
528 |
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changeset
|
529 while old_line < old_end or new_line < new_end: |
3022
0ed42ca7ff9e
Fixed issue with inproper handling of diff parsing that could lead to infinit loops.
Marcin Kuzminski <marcin@python-works.com>
parents:
3015
diff
changeset
|
530 command = ' ' |
2995
32471bd1f4ee
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diff
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|
531 if line: |
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changeset
|
532 command = line[0] |
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parents:
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diff
changeset
|
533 |
32471bd1f4ee
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parents:
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diff
changeset
|
534 affects_old = affects_new = False |
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changeset
|
535 |
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parents:
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changeset
|
536 # ignore those if we don't expect them |
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|
537 if command in '#@': |
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diff
changeset
|
538 continue |
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Implemented generation of changesets based
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changeset
|
539 elif command == '+': |
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diff
changeset
|
540 affects_new = True |
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changeset
|
541 action = 'add' |
32471bd1f4ee
Implemented generation of changesets based
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changeset
|
542 stats[0] += 1 |
32471bd1f4ee
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changeset
|
543 elif command == '-': |
32471bd1f4ee
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diff
changeset
|
544 affects_old = True |
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changeset
|
545 action = 'del' |
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diff
changeset
|
546 stats[1] += 1 |
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|
547 else: |
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2967
diff
changeset
|
548 affects_old = affects_new = True |
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changeset
|
549 action = 'unmod' |
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2967
diff
changeset
|
550 |
3022
0ed42ca7ff9e
Fixed issue with inproper handling of diff parsing that could lead to infinit loops.
Marcin Kuzminski <marcin@python-works.com>
parents:
3015
diff
changeset
|
551 if not self._newline_marker.match(line): |
2995
32471bd1f4ee
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|
552 old_line += affects_old |
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diff
changeset
|
553 new_line += affects_new |
32471bd1f4ee
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changeset
|
554 lines.append({ |
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changeset
|
555 'old_lineno': affects_old and old_line or '', |
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|
556 'new_lineno': affects_new and new_line or '', |
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diff
changeset
|
557 'action': action, |
3022
0ed42ca7ff9e
Fixed issue with inproper handling of diff parsing that could lead to infinit loops.
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diff
changeset
|
558 'line': self._clean_line(line, command) |
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diff
changeset
|
559 }) |
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changeset
|
560 |
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changeset
|
561 line = lineiter.next() |
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changeset
|
562 |
3022
0ed42ca7ff9e
Fixed issue with inproper handling of diff parsing that could lead to infinit loops.
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563 if self._newline_marker.match(line): |
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564 # we need to append to lines, since this is not |
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|
565 # counted in the line specs of diff |
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|
566 lines.append({ |
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567 'old_lineno': '...', |
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568 'new_lineno': '...', |
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|
569 'action': 'context', |
3022
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Fixed issue with inproper handling of diff parsing that could lead to infinit loops.
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|
570 'line': self._clean_line(line, command) |
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|
571 }) |
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|
572 |
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573 except StopIteration: |
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|
574 pass |
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|
575 return chunks, stats |
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576 |
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577 def _safe_id(self, idstring): |
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578 """Make a string safe for including in an id attribute. |
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|
579 |
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580 The HTML spec says that id attributes 'must begin with |
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581 a letter ([A-Za-z]) and may be followed by any number |
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582 of letters, digits ([0-9]), hyphens ("-"), underscores |
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583 ("_"), colons (":"), and periods (".")'. These regexps |
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584 are slightly over-zealous, in that they remove colons |
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|
585 and periods unnecessarily. |
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|
586 |
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|
587 Whitespace is transformed into underscores, and then |
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|
588 anything which is not a hyphen or a character that |
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|
589 matches \w (alphanumerics and underscore) is removed. |
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|
590 |
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591 """ |
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592 # Transform all whitespace to underscore |
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593 idstring = re.sub(r'\s', "_", '%s' % idstring) |
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594 # Remove everything that is not a hyphen or a member of \w |
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|
595 idstring = re.sub(r'(?!-)\W', "", idstring).lower() |
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|
596 return idstring |
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|
597 |
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598 def prepare(self, inline_diff=True): |
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599 """ |
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|
600 Prepare the passed udiff for HTML rendering. It'l return a list |
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|
601 of dicts with diff information |
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602 """ |
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603 parsed = self._parser(inline_diff=inline_diff) |
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604 self.parsed = True |
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605 self.parsed_diff = parsed |
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|
606 return parsed |
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607 |
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|
608 def as_raw(self, diff_lines=None): |
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|
609 """ |
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610 Returns raw string diff |
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611 """ |
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612 return self._diff |
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613 #return u''.join(imap(self._line_counter, self._diff.splitlines(1))) |
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614 |
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|
615 def as_html(self, table_class='code-difftable', line_class='line', |
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616 old_lineno_class='lineno old', new_lineno_class='lineno new', |
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617 code_class='code', enable_comments=False, parsed_lines=None): |
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618 """ |
2349
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|
619 Return given diff as html table with customized css classes |
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620 """ |
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621 def _link_to_if(condition, label, url): |
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622 """ |
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623 Generates a link if condition is meet or just the label if not. |
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624 """ |
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|
625 |
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626 if condition: |
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627 return '''<a href="%(url)s">%(label)s</a>''' % { |
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628 'url': url, |
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629 'label': label |
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630 } |
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631 else: |
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632 return label |
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633 if not self.parsed: |
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634 self.prepare() |
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635 |
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636 diff_lines = self.parsed_diff |
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637 if parsed_lines: |
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638 diff_lines = parsed_lines |
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639 |
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640 _html_empty = True |
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641 _html = [] |
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642 _html.append('''<table class="%(table_class)s">\n''' % { |
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643 'table_class': table_class |
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644 }) |
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645 |
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646 for diff in diff_lines: |
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647 for line in diff['chunks']: |
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648 _html_empty = False |
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649 for change in line: |
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650 _html.append('''<tr class="%(lc)s %(action)s">\n''' % { |
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651 'lc': line_class, |
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652 'action': change['action'] |
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653 }) |
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654 anchor_old_id = '' |
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|
655 anchor_new_id = '' |
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656 anchor_old = "%(filename)s_o%(oldline_no)s" % { |
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657 'filename': self._safe_id(diff['filename']), |
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658 'oldline_no': change['old_lineno'] |
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659 } |
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660 anchor_new = "%(filename)s_n%(oldline_no)s" % { |
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661 'filename': self._safe_id(diff['filename']), |
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662 'oldline_no': change['new_lineno'] |
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663 } |
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664 cond_old = (change['old_lineno'] != '...' and |
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665 change['old_lineno']) |
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666 cond_new = (change['new_lineno'] != '...' and |
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667 change['new_lineno']) |
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|
668 if cond_old: |
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|
669 anchor_old_id = 'id="%s"' % anchor_old |
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670 if cond_new: |
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|
671 anchor_new_id = 'id="%s"' % anchor_new |
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|
672 ########################################################### |
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|
673 # OLD LINE NUMBER |
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|
674 ########################################################### |
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675 _html.append('''\t<td %(a_id)s class="%(olc)s">''' % { |
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676 'a_id': anchor_old_id, |
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677 'olc': old_lineno_class |
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678 }) |
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679 |
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680 _html.append('''%(link)s''' % { |
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681 'link': _link_to_if(True, change['old_lineno'], |
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682 '#%s' % anchor_old) |
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683 }) |
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684 _html.append('''</td>\n''') |
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685 ########################################################### |
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686 # NEW LINE NUMBER |
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687 ########################################################### |
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688 |
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689 _html.append('''\t<td %(a_id)s class="%(nlc)s">''' % { |
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690 'a_id': anchor_new_id, |
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691 'nlc': new_lineno_class |
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692 }) |
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693 |
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694 _html.append('''%(link)s''' % { |
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695 'link': _link_to_if(True, change['new_lineno'], |
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696 '#%s' % anchor_new) |
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697 }) |
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698 _html.append('''</td>\n''') |
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699 ########################################################### |
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700 # CODE |
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701 ########################################################### |
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702 comments = '' if enable_comments else 'no-comment' |
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703 _html.append('''\t<td class="%(cc)s %(inc)s">''' % { |
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704 'cc': code_class, |
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705 'inc': comments |
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706 }) |
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707 _html.append('''\n\t\t<pre>%(code)s</pre>\n''' % { |
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708 'code': change['line'] |
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709 }) |
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710 |
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711 _html.append('''\t</td>''') |
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712 _html.append('''\n</tr>\n''') |
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713 _html.append('''</table>''') |
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714 if _html_empty: |
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715 return None |
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716 return ''.join(_html) |
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717 |
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718 def stat(self): |
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719 """ |
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720 Returns tuple of added, and removed lines for this instance |
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721 """ |
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722 return self.adds, self.removes |