annotate hgext/highlight.py @ 6297:fed1a9c22076

dirstate.remove: during merges, remember the previous file state We encode the previous state as a negative file size (AFAICS, previous versions of hg always have size == 0 when state == 'r'). We save the state of 'm'erged and dirty files, because they're the two states that indicate that a file has to be committed on a merge to correctly record per-file history.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Tue, 18 Mar 2008 04:07:39 -0300
parents e75aab656f46
children 894875eae49b c30849d4c8ba
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1 """
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2 This is Mercurial extension for syntax highlighting in the file
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3 revision view of hgweb.
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4
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5 It depends on the pygments syntax highlighting library:
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6 http://pygments.org/
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7
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8 To enable the extension add this to hgrc:
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9
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10 [extensions]
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11 hgext.highlight =
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12
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13 There is a single configuration option:
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14
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15 [web]
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16 pygments_style = <style>
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17
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18 The default is 'colorful'. If this is changed the corresponding CSS
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19 file should be re-generated by running
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20
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21 # pygmentize -f html -S <newstyle>
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22
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23
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24 -- Adam Hupp <adam@hupp.org>
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25
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26
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27 """
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28
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29 from mercurial import demandimport
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30 demandimport.ignore.extend(['pkgutil',
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31 'pkg_resources',
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32 '__main__',])
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33
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34 from mercurial.hgweb.hgweb_mod import hgweb
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35 from mercurial import util
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36 from mercurial.templatefilters import filters
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37
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38 from pygments import highlight
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39 from pygments.util import ClassNotFound
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40 from pygments.lexers import guess_lexer, guess_lexer_for_filename, TextLexer
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41 from pygments.formatters import HtmlFormatter
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42
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43 SYNTAX_CSS = ('\n<link rel="stylesheet" href="#staticurl#highlight.css" '
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44 'type="text/css" />')
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45
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46 def pygmentize(self, tmpl, fctx, field):
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47 # append a <link ...> to the syntax highlighting css
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48 old_header = ''.join(tmpl('header'))
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49 if SYNTAX_CSS not in old_header:
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50 new_header = old_header + SYNTAX_CSS
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51 tmpl.cache['header'] = new_header
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52
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53 text = fctx.data()
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54 if util.binary(text):
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55 return
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56
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57 style = self.config("web", "pygments_style", "colorful")
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58 # To get multi-line strings right, we can't format line-by-line
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59 try:
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60 lexer = guess_lexer_for_filename(fctx.path(), text,
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61 encoding=util._encoding)
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62 except ClassNotFound:
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63 try:
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64 lexer = guess_lexer(text, encoding=util._encoding)
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65 except ClassNotFound:
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66 lexer = TextLexer(encoding=util._encoding)
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67
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68 formatter = HtmlFormatter(style=style, encoding=util._encoding)
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69
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70 colorized = highlight(text, lexer, formatter)
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71 # strip wrapping div
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72 colorized = colorized[:colorized.find('\n</pre>')]
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73 colorized = colorized[colorized.find('<pre>')+5:]
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74 coloriter = iter(colorized.splitlines())
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75
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76 filters['colorize'] = lambda x: coloriter.next()
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77
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78 oldl = tmpl.cache[field]
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79 newl = oldl.replace('line|escape', 'line|colorize')
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80 tmpl.cache[field] = newl
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81
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82 def filerevision_highlight(self, tmpl, fctx):
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83 pygmentize(self, tmpl, fctx, 'fileline')
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84
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85 return realrevision(self, tmpl, fctx)
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86
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87 def fileannotate_highlight(self, tmpl, fctx):
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88 pygmentize(self, tmpl, fctx, 'annotateline')
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89
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90 return realannotate(self, tmpl, fctx)
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91
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92 # monkeypatch in the new version
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93 # should be safer than overriding the method in a derived class
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94 # and then patching the class
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95 realrevision = hgweb.filerevision
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96 hgweb.filerevision = filerevision_highlight
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97 realannotate = hgweb.fileannotate
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98 hgweb.fileannotate = fileannotate_highlight