Mercurial > hg
view hgext/highlight.py @ 6664:1e3c1f010808
Truncate input to 1K when using pygments guess_lexer.
This function appears to be exponential with input length.
author | Brendan Cully <brendan@kublai.com> |
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date | Thu, 12 Jun 2008 00:11:09 -0700 |
parents | 5c1bb5750558 |
children | 73f49bef13ad |
line wrap: on
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""" This is Mercurial extension for syntax highlighting in the file revision view of hgweb. It depends on the pygments syntax highlighting library: http://pygments.org/ To enable the extension add this to hgrc: [extensions] hgext.highlight = There is a single configuration option: [web] pygments_style = <style> The default is 'colorful'. -- Adam Hupp <adam@hupp.org> """ from mercurial import demandimport demandimport.ignore.extend(['pkgutil', 'pkg_resources', '__main__',]) from mercurial.hgweb import webcommands, webutil, common from mercurial import util from mercurial.templatefilters import filters from pygments import highlight from pygments.util import ClassNotFound from pygments.lexers import guess_lexer, guess_lexer_for_filename, TextLexer from pygments.formatters import HtmlFormatter SYNTAX_CSS = ('\n<link rel="stylesheet" href="{url}highlightcss" ' 'type="text/css" />') def pygmentize(field, fctx, style, tmpl): # append a <link ...> to the syntax highlighting css old_header = ''.join(tmpl('header')) if SYNTAX_CSS not in old_header: new_header = old_header + SYNTAX_CSS tmpl.cache['header'] = new_header text = fctx.data() if util.binary(text): return # To get multi-line strings right, we can't format line-by-line try: lexer = guess_lexer_for_filename(fctx.path(), text[:1024], encoding=util._encoding) except (ClassNotFound, ValueError): try: lexer = guess_lexer(text[:1024], encoding=util._encoding) except (ClassNotFound, ValueError): lexer = TextLexer(encoding=util._encoding) formatter = HtmlFormatter(style=style, encoding=util._encoding) colorized = highlight(text, lexer, formatter) # strip wrapping div colorized = colorized[:colorized.find('\n</pre>')] colorized = colorized[colorized.find('<pre>')+5:] coloriter = iter(colorized.splitlines()) filters['colorize'] = lambda x: coloriter.next() oldl = tmpl.cache[field] newl = oldl.replace('line|escape', 'line|colorize') tmpl.cache[field] = newl web_filerevision = webcommands._filerevision web_annotate = webcommands.annotate def filerevision_highlight(web, tmpl, fctx): style = web.config('web', 'pygments_style', 'colorful') pygmentize('fileline', fctx, style, tmpl) return web_filerevision(web, tmpl, fctx) def annotate_highlight(web, req, tmpl): fctx = webutil.filectx(web.repo, req) style = web.config('web', 'pygments_style', 'colorful') pygmentize('annotateline', fctx, style, tmpl) return web_annotate(web, req, tmpl) def generate_css(web, req, tmpl): pg_style = web.config('web', 'pygments_style', 'colorful') fmter = HtmlFormatter(style = pg_style) req.respond(common.HTTP_OK, 'text/css') return ['/* pygments_style = %s */\n\n' % pg_style, fmter.get_style_defs('')] # monkeypatch in the new version webcommands._filerevision = filerevision_highlight webcommands.annotate = annotate_highlight webcommands.highlightcss = generate_css webcommands.__all__.append('highlightcss')