upstream/mercurial-mirror Files · hgext/highlight/highlight.py

hgweb: provide symrev (symbolic revision) property to the templates...

hgweb: provide symrev (symbolic revision) property to the templates One of the features of hgweb is that current position in repo history is remembered between separate requests. That is, links from /rev/<node_hash> lead to /file/<node_hash> or /log/<node_hash>, so it's easy to dig deep into the history. However, such links could only use node hashes and local revision numbers, so while staying at one exact revision is easy, staying on top of the changes is not, because hashes presumably can't change (local revision numbers can, but probably not in a way you'd find useful for navigating). So while you could use 'tip' or 'default' in a url, links on that page would be permanent. This is not always desired (think /rev/tip or /graph/stable or /log/@) and is sometimes just confusing (i.e. /log/<not the tip hash>, when recent history is not displayed). And if user changed url deliberately to say default instead of <some node hash>, the page ignores that fact and uses node hash in its links, which means that navigation is, in a way, broken. This new property, symrev, is used for storing current revision the way it was specified, so then templates can use it in links and thus "not dereference" the symbolic revision. It is an additional way to produce links, so not every link needs to drop {node|short} in favor of {symrev}, many will still use node hash (log and filelog entries, annotate lines, etc). Some pages (e.g. summary, tags) always use the tip changeset for their context, in such cases symrev is set to 'tip'. This is needed in case the pages want to provide archive links. highlight extension needs to be updated, since _filerevision now takes an additional positional argument (signature "web, req, tmpl" is used by most of webcommands.py functions). More references to symbolic revisions and related gripes: issue2296, issue2826, issue3594, issue3634.

Matt Mackall - - Load All Authors

File last commit:

r23613:7b8ff3fd default


                r25602:85fb416f

default

Download file

             highlight.py
        
                    67 lines
            
             | 2.3 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / hgext / highlight / highlight.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      # 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.ignore.extend(['pkgutil', 'pkg_resources', '__main__'])

      from mercurial import util, encoding

      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 = tmpl.load('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

          # str.splitlines() != unicode.splitlines() because "reasons"

          for c in "\x0c\x1c\x1d\x1e":

              if c in text:

                  text = text.replace(c, '')

          # Pygments is best used with Unicode strings:

          # <http://pygments.org/docs/unicode/>

          text = text.decode(encoding.encoding, 'replace')

          # To get multi-line strings right, we can't format line-by-line

          try:

              lexer = guess_lexer_for_filename(fctx.path(), text[:1024],

                                               stripnl=False)

          except (ClassNotFound, ValueError):

              try:

                  lexer = guess_lexer(text[:1024], stripnl=False)

              except (ClassNotFound, ValueError):

                  lexer = TextLexer(stripnl=False)

          formatter = HtmlFormatter(style=style)

          colorized = highlight(text, lexer, formatter)

          # strip wrapping div

          colorized = colorized[:colorized.find('\n</pre>')]

          colorized = colorized[colorized.find('<pre>') + 5:]

          coloriter = (s.encode(encoding.encoding, 'replace')

                       for s in colorized.splitlines())

          tmpl.filters['colorize'] = lambda x: coloriter.next()

          oldl = tmpl.cache[field]

          newl = oldl.replace('line|escape', 'line|colorize')

          tmpl.cache[field] = newl

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				# 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.ignore.extend(['pkgutil', 'pkg_resources', '__main__'])
				from mercurial import util, encoding

				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 = tmpl.load('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

				# str.splitlines() != unicode.splitlines() because "reasons"
				for c in "\x0c\x1c\x1d\x1e":
				if c in text:
				text = text.replace(c, '')

				# Pygments is best used with Unicode strings:
				# <http://pygments.org/docs/unicode/>
				text = text.decode(encoding.encoding, 'replace')

				# To get multi-line strings right, we can't format line-by-line
				try:
				lexer = guess_lexer_for_filename(fctx.path(), text[:1024],
				stripnl=False)
				except (ClassNotFound, ValueError):
				try:
				lexer = guess_lexer(text[:1024], stripnl=False)
				except (ClassNotFound, ValueError):
				lexer = TextLexer(stripnl=False)

				formatter = HtmlFormatter(style=style)

				colorized = highlight(text, lexer, formatter)
				# strip wrapping div
				colorized = colorized[:colorized.find('\n</pre>')]
				colorized = colorized[colorized.find('<pre>') + 5:]
				coloriter = (s.encode(encoding.encoding, 'replace')
				for s in colorized.splitlines())

				tmpl.filters['colorize'] = lambda x: coloriter.next()

				oldl = tmpl.cache[field]
				newl = oldl.replace('line\|escape', 'line\|colorize')
				tmpl.cache[field] = newl