# HG changeset patch
# User Sean Farley <sean.michael.farley@gmail.com>
# Date 1395678061 18000
# Node ID 70cb6ba038fa9fc7a12cb8887296158b5fa9463c
# Parent  3e264851f87998a0e1a24c249e10eb4fad69ff1b
maps: add ability to parse a regex or glob

This code is taken straight from mercurial's hgignore parser. With this patch
we can now understand 'syntax: glob' or 'syntax: re' lines as well as lines
that begin with 'glob:' or 're:'.

diff --git a/hgsubversion/maps.py b/hgsubversion/maps.py
--- a/hgsubversion/maps.py
+++ b/hgsubversion/maps.py
@@ -18,6 +18,7 @@ class BaseMap(dict):
         super(BaseMap, self).__init__()
 
         self._commentre = re.compile(r'((^|[^\\])(\\\\)*)#.*')
+        self.syntaxes = ('re', 'glob')
 
         # trickery: all subclasses have the same name as their file and config
         # names, e.g. AuthorMap is meta.authormap_file for the filename and
@@ -111,6 +112,7 @@ class BaseMap(dict):
 
         self.meta.ui.debug('reading %s from %s\n' % (self.mapname , path))
         f = open(path, 'r')
+        syntax = ''
         for number, line in enumerate(f):
 
             if writing:
@@ -126,6 +128,20 @@ class BaseMap(dict):
             if not line:
                 continue
 
+            if line.startswith('syntax:'):
+                s = line[7:].strip()
+                syntax = ''
+                if s in self.syntaxes:
+                    syntax = s
+                continue
+            pat = syntax
+            for s in self.syntaxes:
+                if line.startswith(s + ':'):
+                    pat = s
+                    line = line[len(s) + 1:]
+                    break
+
+            # split on the first '='
             try:
                 src, dst = line.split('=', 1)
             except (IndexError, ValueError):
@@ -137,6 +153,12 @@ class BaseMap(dict):
             src = src.strip()
             dst = dst.strip()
 
+            if pat != 're':
+                src = re.escape(src)
+            if pat == 'glob':
+                src = src.replace('\\*', '.*')
+            src = re.compile(src)
+
             if src not in self:
                 self.meta.ui.debug('adding %s to %s\n' % (src, self.mapname))
             elif dst != self[src]: