add hg and python

1 files changed, 80 insertions, 0 deletions

diff --git a/sys/lib/python/hgext/interhg.py b/sys/lib/python/hgext/interhg.py
new file mode 100644
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+++ b/sys/lib/python/hgext/interhg.py
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+# interhg.py - interhg
+#
+# Copyright 2007 OHASHI Hideya <ohachige@gmail.com>
+#
+# Contributor(s):
+#   Edward Lee <edward.lee@engineering.uiuc.edu>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+'''expand expressions into changelog and summaries
+
+This extension allows the use of a special syntax in summaries, which
+will be automatically expanded into links or any other arbitrary
+expression, much like InterWiki does.
+
+A few example patterns (link to bug tracking, etc.) that may be used
+in your hgrc::
+
+  [interhg]
+  issues = s!issue(\\d+)!<a href="http://bts/issue\\1">issue\\1</a>!
+  bugzilla = s!((?:bug|b=|(?=#?\\d{4,}))(?:\\s*#?)(\\d+))!<a..=\\2">\\1</a>!i
+  boldify = s!(^|\\s)#(\\d+)\\b! <b>#\\2</b>!
+'''
+
+import re
+from mercurial.hgweb import hgweb_mod
+from mercurial import templatefilters, extensions
+from mercurial.i18n import _
+
+orig_escape = templatefilters.filters["escape"]
+
+interhg_table = []
+
+def interhg_escape(x):
+    escstr = orig_escape(x)
+    for regexp, format in interhg_table:
+        escstr = regexp.sub(format, escstr)
+    return escstr
+
+templatefilters.filters["escape"] = interhg_escape
+
+def interhg_refresh(orig, self):
+    interhg_table[:] = []
+    for key, pattern in self.repo.ui.configitems('interhg'):
+        # grab the delimiter from the character after the "s"
+        unesc = pattern[1]
+        delim = re.escape(unesc)
+
+        # identify portions of the pattern, taking care to avoid escaped
+        # delimiters. the replace format and flags are optional, but delimiters
+        # are required.
+        match = re.match(r'^s%s(.+)(?:(?<=\\\\)|(?<!\\))%s(.*)%s([ilmsux])*$'
+                         % (delim, delim, delim), pattern)
+        if not match:
+            self.repo.ui.warn(_("interhg: invalid pattern for %s: %s\n")
+                              % (key, pattern))
+            continue
+
+        # we need to unescape the delimiter for regexp and format
+        delim_re = re.compile(r'(?<!\\)\\%s' % delim)
+        regexp = delim_re.sub(unesc, match.group(1))
+        format = delim_re.sub(unesc, match.group(2))
+
+        # the pattern allows for 6 regexp flags, so set them if necessary
+        flagin = match.group(3)
+        flags = 0
+        if flagin:
+            for flag in flagin.upper():
+                flags |= re.__dict__[flag]
+
+        try:
+            regexp = re.compile(regexp, flags)
+            interhg_table.append((regexp, format))
+        except re.error:
+            self.repo.ui.warn(_("interhg: invalid regexp for %s: %s\n")
+                              % (key, regexp))
+    return orig(self)
+
+extensions.wrapfunction(hgweb_mod.hgweb, 'refresh', interhg_refresh)