annotate MoinMoin/util/diff_html.py @ 3123:5cb80bd604b4

refactored _() getText calls to match new api
author Radomir Dopieralski <moindev@sheep.art.pl>
date Wed, 27 Feb 2008 00:28:28 +0100
parents 8974561cc460
children dac434907110
rev   line source
0
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - Side by side diffs
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4
1918
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5 @copyright: 2002 Juergen Hermann <jh@web.de>,
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6 2002 Scott Moonen <smoonen@andstuff.org>
0
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7 @license: GNU GPL, see COPYING for details.
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8 """
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9
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10 from MoinMoin.support import difflib
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11 from MoinMoin.wikiutil import escape
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12
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13 def indent(line):
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14 eol = ''
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15 while line and line[0] == '\n':
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16 eol += '\n'
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17 line = line[1:]
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18 stripped = line.lstrip()
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19 if len(line) - len(stripped):
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20 line = "&nbsp;" * (len(line) - len(stripped)) + stripped
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21 #return "%d / %d / %s" % (len(line), len(stripped), line)
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22 return eol + line
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23
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24
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25 # This code originally by Scott Moonen, used with permission.
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26 def diff(request, old, new):
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27 """ Find changes between old and new and return
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28 HTML markup visualising them.
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29 """
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30 _ = request.getText
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31 t_line = _("Line") + " %d"
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33 seq1 = old.splitlines()
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34 seq2 = new.splitlines()
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35
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36 seqobj = difflib.SequenceMatcher(None, seq1, seq2)
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37 linematch = seqobj.get_matching_blocks()
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38
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39 if len(seq1) == len(seq2) and linematch[0] == (0, 0, len(seq1)):
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40 # No differences.
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41 return " - " + _("No differences found!")
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42
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43 lastmatch = (0, 0)
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44
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45 result = """
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46 <table class="diff">
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47 <tr>
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48 <td class="diff-removed">
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49 <span>
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50 %s
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51 </span>
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52 </td>
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53 <td class="diff-added">
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54 <span>
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55 %s
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56 </span>
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57 </td>
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58 </tr>
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59 """ % (_('Deletions are marked like this.'), _('Additions are marked like this.'), )
0
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60
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61 # Print all differences
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62 for match in linematch:
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63 # Starts of pages identical?
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64 if lastmatch == match[0:2]:
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65 lastmatch = (match[0] + match[2], match[1] + match[2])
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66 continue
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67 llineno, rlineno = lastmatch[0]+1, lastmatch[1]+1
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68 result += """
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69 <tr class="diff-title">
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70 <td>
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71 %s:
0
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72 </td>
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73 <td>
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74 %s:
0
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75 </td>
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76 </tr>
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77 """ % (request.formatter.line_anchorlink(1, llineno) + request.formatter.text(t_line % llineno) + request.formatter.line_anchorlink(0),
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78 request.formatter.line_anchorlink(1, rlineno) + request.formatter.text(t_line % rlineno) + request.formatter.line_anchorlink(0))
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79
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80 leftpane = ''
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81 rightpane = ''
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82 linecount = max(match[0] - lastmatch[0], match[1] - lastmatch[1])
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83 for line in range(linecount):
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84 if line < match[0] - lastmatch[0]:
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85 if line > 0:
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86 leftpane += '\n'
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87 leftpane += seq1[lastmatch[0] + line]
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88 if line < match[1] - lastmatch[1]:
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89 if line > 0:
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90 rightpane += '\n'
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91 rightpane += seq2[lastmatch[1] + line]
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92
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93 charobj = difflib.SequenceMatcher(None, leftpane, rightpane)
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94 charmatch = charobj.get_matching_blocks()
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95
0
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96 if charobj.ratio() < 0.5:
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97 # Insufficient similarity.
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98 if leftpane:
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99 leftresult = """<span>%s</span>""" % indent(escape(leftpane))
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100 else:
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101 leftresult = ''
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102
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103 if rightpane:
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104 rightresult = """<span>%s</span>""" % indent(escape(rightpane))
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105 else:
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106 rightresult = ''
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107 else:
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108 # Some similarities; markup changes.
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109 charlast = (0, 0)
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110
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111 leftresult = ''
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112 rightresult = ''
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113 for thismatch in charmatch:
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114 if thismatch[0] - charlast[0] != 0:
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115 leftresult += """<span>%s</span>""" % indent(
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116 escape(leftpane[charlast[0]:thismatch[0]]))
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117 if thismatch[1] - charlast[1] != 0:
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118 rightresult += """<span>%s</span>""" % indent(
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119 escape(rightpane[charlast[1]:thismatch[1]]))
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120 leftresult += escape(leftpane[thismatch[0]:thismatch[0] + thismatch[2]])
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121 rightresult += escape(rightpane[thismatch[1]:thismatch[1] + thismatch[2]])
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122 charlast = (thismatch[0] + thismatch[2], thismatch[1] + thismatch[2])
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123
1866
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124 leftpane = '<br>\n'.join([indent(x) for x in leftresult.splitlines()])
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125 rightpane = '<br>\n'.join([indent(x) for x in rightresult.splitlines()])
0
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126
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127 # removed width="50%%"
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128 result += """
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129 <tr>
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130 <td class="diff-removed">
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131 %s
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132 </td>
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133 <td class="diff-added">
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134 %s
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135 </td>
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136 </tr>
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137 """ % (leftpane, rightpane)
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138
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139 lastmatch = (match[0] + match[2], match[1] + match[2])
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140
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141 result += '</table>\n'
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142 return result
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143