Mercurial > hg
view hgext/highlight/highlight.py @ 49680:40e24d82b513
delta-find: make sure we only use newer full snapshot as candidate
The current code does not needs to protect against this, as there are no older
snapshot in the current cache. However as we are getting ready to reuse this
cache from one revision to another, we need the code to protect itself about
what's coming.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sun, 06 Nov 2022 17:55:55 -0500 |
parents | 5f22c92dcf3d |
children | 493034cc3265 |
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# highlight.py - highlight extension implementation file # # Copyright 2007-2009 Adam Hupp <adam@hupp.org> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # # The original module was split in an interface and an implementation # file to defer pygments loading and speedup extension setup. from mercurial import demandimport demandimport.IGNORES.update(['pkgutil', 'pkg_resources', '__main__']) from mercurial import ( encoding, pycompat, ) from mercurial.utils import stringutil with demandimport.deactivated(): import pygments import pygments.formatters import pygments.lexers import pygments.plugin import pygments.util for unused in pygments.plugin.find_plugin_lexers(): pass highlight = pygments.highlight ClassNotFound = pygments.util.ClassNotFound guess_lexer = pygments.lexers.guess_lexer guess_lexer_for_filename = pygments.lexers.guess_lexer_for_filename TextLexer = pygments.lexers.TextLexer HtmlFormatter = pygments.formatters.HtmlFormatter SYNTAX_CSS = ( b'\n<link rel="stylesheet" href="{url}highlightcss" type="text/css" />' ) def pygmentize(field, fctx, style, tmpl, guessfilenameonly=False): # append a <link ...> to the syntax highlighting css tmpl.load(b'header') old_header = tmpl.cache[b'header'] if SYNTAX_CSS not in old_header: new_header = old_header + SYNTAX_CSS tmpl.cache[b'header'] = new_header text = fctx.data() if stringutil.binary(text): return # str.splitlines() != unicode.splitlines() because "reasons" for c in b"\x0c", b"\x1c", b"\x1d", b"\x1e": if c in text: text = text.replace(c, b'') # Pygments is best used with Unicode strings: # <http://pygments.org/docs/unicode/> text = text.decode(pycompat.sysstr(encoding.encoding), 'replace') # To get multi-line strings right, we can't format line-by-line try: path = pycompat.sysstr(fctx.path()) lexer = guess_lexer_for_filename(path, text[:1024], stripnl=False) except (ClassNotFound, ValueError): # guess_lexer will return a lexer if *any* lexer matches. There is # no way to specify a minimum match score. This can give a high rate of # false positives on files with an unknown filename pattern. if guessfilenameonly: return try: lexer = guess_lexer(text[:1024], stripnl=False) except (ClassNotFound, ValueError): # Don't highlight unknown files return # Don't highlight text files if isinstance(lexer, TextLexer): return formatter = HtmlFormatter(nowrap=True, style=pycompat.sysstr(style)) colorized = highlight(text, lexer, formatter) coloriter = ( s.encode(pycompat.sysstr(encoding.encoding), 'replace') for s in colorized.splitlines() ) tmpl._filters[b'colorize'] = lambda x: next(coloriter) oldl = tmpl.cache[field] newl = oldl.replace(b'line|escape', b'line|colorize') tmpl.cache[field] = newl