Mercurial > hg
annotate hgext/highlight/highlight.py @ 28011:8abd9f785030
merge: add file ancestor linknode to mergestate
During a merge, each file has a current commitnode+filenode, an other
commitnode+filenode, and an ancestor commitnode+filenode. The ancestor
commitnode is not stored though, and we rely on the ability for the filectx() to
look up the commitnode by using the filenode's linkrev. In alternative backends
(like remotefilelog), linkrevs may have restriction that prevent arbitrary
linkrev look up given a filenode.
This patch accounts for that by storing the ancestor commitnode in
the merge state so that it is available later at resolve time.
This results in some test changes because the ancestor commitnode we're using at
resolve time changes slightly. Before, we used the linkrev commit, which is the
earliest commit that introduced that particular filenode (which may not be the
latest common ancestor of the commits being merged). Now we use the latest
common ancestor of the merged commits as the commitnode. This is fine though,
because that commit contains the same filenode as the linkrev'd commit.
author | Durham Goode <durham@fb.com> |
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date | Fri, 05 Feb 2016 10:22:14 -0800 |
parents | b502138f5faa |
children | ead25aa27a43 |
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1 # highlight.py - highlight extension implementation file |
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2 # |
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3 # Copyright 2007-2009 Adam Hupp <adam@hupp.org> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 # |
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8 # The original module was split in an interface and an implementation |
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9 # file to defer pygments loading and speedup extension setup. |
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10 |
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11 from mercurial import demandimport |
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12 demandimport.ignore.extend(['pkgutil', 'pkg_resources', '__main__']) |
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13 from mercurial import util, encoding |
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14 |
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15 from pygments import highlight |
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16 from pygments.util import ClassNotFound |
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17 from pygments.lexers import guess_lexer, guess_lexer_for_filename, TextLexer |
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18 from pygments.formatters import HtmlFormatter |
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19 |
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20 SYNTAX_CSS = ('\n<link rel="stylesheet" href="{url}highlightcss" ' |
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21 'type="text/css" />') |
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22 |
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23 def pygmentize(field, fctx, style, tmpl, guessfilenameonly=False): |
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24 |
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25 # append a <link ...> to the syntax highlighting css |
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26 old_header = tmpl.load('header') |
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27 if SYNTAX_CSS not in old_header: |
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28 new_header = old_header + SYNTAX_CSS |
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29 tmpl.cache['header'] = new_header |
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30 |
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31 text = fctx.data() |
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32 if util.binary(text): |
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33 return |
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34 |
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35 # str.splitlines() != unicode.splitlines() because "reasons" |
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36 for c in "\x0c\x1c\x1d\x1e": |
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37 if c in text: |
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38 text = text.replace(c, '') |
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39 |
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40 # Pygments is best used with Unicode strings: |
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41 # <http://pygments.org/docs/unicode/> |
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42 text = text.decode(encoding.encoding, 'replace') |
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43 |
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44 # To get multi-line strings right, we can't format line-by-line |
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45 try: |
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46 lexer = guess_lexer_for_filename(fctx.path(), text[:1024], |
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47 stripnl=False) |
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48 except (ClassNotFound, ValueError): |
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49 # guess_lexer will return a lexer if *any* lexer matches. There is |
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50 # no way to specify a minimum match score. This can give a high rate of |
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51 # false positives on files with an unknown filename pattern. |
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52 if guessfilenameonly: |
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53 return |
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54 |
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55 try: |
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56 lexer = guess_lexer(text[:1024], stripnl=False) |
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57 except (ClassNotFound, ValueError): |
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58 # Don't highlight unknown files |
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59 return |
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60 |
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61 # Don't highlight text files |
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62 if isinstance(lexer, TextLexer): |
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63 return |
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64 |
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65 formatter = HtmlFormatter(nowrap=True, style=style) |
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66 |
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67 colorized = highlight(text, lexer, formatter) |
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68 coloriter = (s.encode(encoding.encoding, 'replace') |
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69 for s in colorized.splitlines()) |
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70 |
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71 tmpl.filters['colorize'] = lambda x: coloriter.next() |
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72 |
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73 oldl = tmpl.cache[field] |
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74 newl = oldl.replace('line|escape', 'line|colorize') |
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75 tmpl.cache[field] = newl |