# HG changeset patch
# User Adam Hupp <adam@hupp.org>
# Date 1194735297 18000
# Node ID 40a06e39f010989fb6d53df6e566485d7d9bc75e
# Parent  a3fe91b4f6ebb8f6c276f5010e9243750e3fcf34
extension for synax highlighting in the hgweb file revision view

Depends on the pygments syntax highlighting library:
http://pygments.org/

diff -r a3fe91b4f6eb -r 40a06e39f010 hgext/highlight.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hgext/highlight.py	Sat Nov 10 17:54:57 2007 -0500
@@ -0,0 +1,153 @@
+"""
+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'.  If this is changed the corresponding CSS
+file should be re-generated by running
+
+# pygmentize -f html -S <newstyle>
+
+
+-- Adam Hupp <adam@hupp.org>
+
+
+"""
+
+from mercurial import demandimport
+demandimport.ignore.extend(['pkgutil',
+                            'pkg_resources',
+                            '__main__',])
+
+import mimetypes
+
+from mercurial.hgweb import hgweb_mod
+from mercurial.hgweb.hgweb_mod import hgweb
+from mercurial import util
+from mercurial.hgweb.common import paritygen
+from mercurial.node import hex
+
+from pygments import highlight
+from pygments.util import ClassNotFound
+from pygments.lexers import guess_lexer_for_filename, TextLexer
+from pygments.formatters import HtmlFormatter
+
+SYNTAX_CSS = '\n<link rel="stylesheet" href="#staticurl#highlight.css" type="text/css" />'
+
+class StripedHtmlFormatter(HtmlFormatter):
+
+    def __init__(self, stripecount, *args, **kwargs):
+        super(StripedHtmlFormatter, self).__init__(*args, **kwargs)
+        self.stripecount = stripecount
+        
+    def wrap(self, source, outfile):
+        yield 0, "<div class='highlight'>"
+        yield 0, "<pre>"
+        parity = paritygen(self.stripecount)
+
+        for n, i in source:
+            if n == 1:
+                i = "<div class='parity%s'>%s</div>" % \
+                (parity.next(), i)
+            yield n, i
+
+        yield 0, "</pre>"
+        yield 0, "</div>"
+
+
+def pygments_format(filename, rawtext,
+                    forcetext=False,
+                    stripecount=1,
+                    style='colorful'):
+
+    if not forcetext:
+        try:
+            lexer = guess_lexer_for_filename(filename, rawtext)
+        except ClassNotFound:
+            lexer = TextLexer()
+    else:
+        lexer = TextLexer()
+        
+    formatter = StripedHtmlFormatter(stripecount,
+                                     style=style,
+                                     linenos='inline')
+
+    return highlight(rawtext, lexer, formatter)
+
+
+"""
+This reimplements hgweb.filerevision to use syntax highlighting
+"""
+def filerevision_pygments(self, fctx):
+    filename = fctx.path()
+
+    rawtext = fctx.data()
+    text = rawtext
+
+    mt = mimetypes.guess_type(filename)[0]
+
+    if util.binary(text):
+        mt = mt or 'application/octet-stream'
+        text = "(binary:%s)" % mt
+
+        # don't parse (binary:...) as anything
+        forcetext = True
+    else:
+        mt = mt or 'text/plain'
+        forcetext = False
+
+
+    def lines(text):
+        for line in text.splitlines(True):
+            yield {"line": line}
+
+    style = self.config("web", "pygments_style", "colorful")
+
+    text_formatted = lines(pygments_format(filename, text,
+                                           forcetext=forcetext,
+                                           stripecount=self.stripecount,
+                                           style=style))
+
+    # override per-line template   
+    self.t.cache['fileline'] = '#line#'
+
+    # append a <link ...> to the syntax highlighting css
+    old_header = ''.join(self.t('header'))
+    if SYNTAX_CSS not in old_header:
+        new_header =  old_header + SYNTAX_CSS
+        self.t.cache['header'] = new_header
+
+    
+    yield self.t("filerevision",
+                 file=filename,
+                 path=hgweb_mod._up(filename), # fixme: make public
+                 text=text_formatted,
+                 raw=rawtext,
+                 mimetype=mt,
+                 rev=fctx.rev(),
+                 node=hex(fctx.node()),
+                 author=fctx.user(),
+                 date=fctx.date(),
+                 desc=fctx.description(),
+                 parent=self.siblings(fctx.parents()),
+                 child=self.siblings(fctx.children()),
+                 rename=self.renamelink(fctx.filelog(),
+                                        fctx.filenode()),
+                 permissions=fctx.manifest().flags(filename))
+
+# monkeypatch in the new version
+# should be safer than overriding the method in a derived class
+# and then patching the class
+hgweb.filerevision = filerevision_pygments
diff -r a3fe91b4f6eb -r 40a06e39f010 templates/static/highlight.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/templates/static/highlight.css	Sat Nov 10 17:54:57 2007 -0500
@@ -0,0 +1,59 @@
+.c { color: #808080 } /* Comment */
+.err { color: #F00000; background-color: #F0A0A0 } /* Error */
+.k { color: #008000; font-weight: bold } /* Keyword */
+.o { color: #303030 } /* Operator */
+.cm { color: #808080 } /* Comment.Multiline */
+.cp { color: #507090 } /* Comment.Preproc */
+.c1 { color: #808080 } /* Comment.Single */
+.cs { color: #cc0000; font-weight: bold } /* Comment.Special */
+.gd { color: #A00000 } /* Generic.Deleted */
+.ge { font-style: italic } /* Generic.Emph */
+.gr { color: #FF0000 } /* Generic.Error */
+.gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.gi { color: #00A000 } /* Generic.Inserted */
+.go { color: #808080 } /* Generic.Output */
+.gp { color: #c65d09; font-weight: bold } /* Generic.Prompt */
+.gs { font-weight: bold } /* Generic.Strong */
+.gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.gt { color: #0040D0 } /* Generic.Traceback */
+.kc { color: #008000; font-weight: bold } /* Keyword.Constant */
+.kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
+.kp { color: #003080; font-weight: bold } /* Keyword.Pseudo */
+.kr { color: #008000; font-weight: bold } /* Keyword.Reserved */
+.kt { color: #303090; font-weight: bold } /* Keyword.Type */
+.m { color: #6000E0; font-weight: bold } /* Literal.Number */
+.s { background-color: #fff0f0 } /* Literal.String */
+.na { color: #0000C0 } /* Name.Attribute */
+.nb { color: #007020 } /* Name.Builtin */
+.nc { color: #B00060; font-weight: bold } /* Name.Class */
+.no { color: #003060; font-weight: bold } /* Name.Constant */
+.nd { color: #505050; font-weight: bold } /* Name.Decorator */
+.ni { color: #800000; font-weight: bold } /* Name.Entity */
+.ne { color: #F00000; font-weight: bold } /* Name.Exception */
+.nf { color: #0060B0; font-weight: bold } /* Name.Function */
+.nl { color: #907000; font-weight: bold } /* Name.Label */
+.nn { color: #0e84b5; font-weight: bold } /* Name.Namespace */
+.nt { color: #007000 } /* Name.Tag */
+.nv { color: #906030 } /* Name.Variable */
+.ow { color: #000000; font-weight: bold } /* Operator.Word */
+.w { color: #bbbbbb } /* Text.Whitespace */
+.mf { color: #6000E0; font-weight: bold } /* Literal.Number.Float */
+.mh { color: #005080; font-weight: bold } /* Literal.Number.Hex */
+.mi { color: #0000D0; font-weight: bold } /* Literal.Number.Integer */
+.mo { color: #4000E0; font-weight: bold } /* Literal.Number.Oct */
+.sb { background-color: #fff0f0 } /* Literal.String.Backtick */
+.sc { color: #0040D0 } /* Literal.String.Char */
+.sd { color: #D04020 } /* Literal.String.Doc */
+.s2 { background-color: #fff0f0 } /* Literal.String.Double */
+.se { color: #606060; font-weight: bold; background-color: #fff0f0 } /* Literal.String.Escape */
+.sh { background-color: #fff0f0 } /* Literal.String.Heredoc */
+.si { background-color: #e0e0e0 } /* Literal.String.Interpol */
+.sx { color: #D02000; background-color: #fff0f0 } /* Literal.String.Other */
+.sr { color: #000000; background-color: #fff0ff } /* Literal.String.Regex */
+.s1 { background-color: #fff0f0 } /* Literal.String.Single */
+.ss { color: #A06000 } /* Literal.String.Symbol */
+.bp { color: #007020 } /* Name.Builtin.Pseudo */
+.vc { color: #306090 } /* Name.Variable.Class */
+.vg { color: #d07000; font-weight: bold } /* Name.Variable.Global */
+.vi { color: #3030B0 } /* Name.Variable.Instance */
+.il { color: #0000D0; font-weight: bold } /* Literal.Number.Integer.Long */