Improve get_tm_snippets.py script:

- add support for importing from local directory via two
	  arguments: "dir/path" and "name"
	- add support for variable translation by fixed map
	- remove decode+encode from unescape(); this did not work with some
	  string from the php.tmbundle
	- handle ElementTree.ParseError

utils/get_tm_snippets.py

@@ -6,6 +6,9 @@ import re
 from xml.etree import ElementTree
 from xml.parsers.expat import ExpatError
 import htmlentitydefs
+import os
+import glob
+
 
 _UNESCAPE = re.compile(ur'&\w+?;', re.UNICODE)
 def unescape(s):
@@ -13,12 +16,43 @@ def unescape(s):
         return ""
     def fixup(m):
         ent = m.group(0)[1:-1]
-        print ent
         return unichr(htmlentitydefs.name2codepoint[ent])
     try:
-        return _UNESCAPE.sub(fixup,s.decode("utf-8")).encode("utf-8")
+        return _UNESCAPE.sub(fixup,s)
     except:
-        print repr(s)
+        print "unescape failed: %s" % repr(s)
+        raise
+
+class UnknownVariable(Exception):
+    pass
+
+class UnsupportedVariableExpression(Exception):
+    pass
+
+def replace_vars(m):
+    """ Replace vars in 'content' portion.
+    :m: match object
+    :returns: string"""
+    var = m.group(1)
+    default = m.group(2)
+
+    if not re.match(r'\w+$', var):
+        raise UnsupportedVariableExpression(var)
+
+    translate_vars = {
+            'TM_PHP_OPEN_TAG_WITH_ECHO': 'g:UltiSnipsOpenTagWithEcho',
+            'TM_PHP_OPEN_TAG': 'g:UltiSnipsOpenTag',
+            'PHPDOC_AUTHOR': 'g:snips_author',
+            }
+    # TODO: TM_SELECTED_TEXT/([\t ]*).*/$1/m
+
+    if var in translate_vars:
+        newvar = translate_vars[var]
+    else:
+        # TODO: this could be autogenerated
+        raise UnknownVariable(var)
+
+    return "`!v exists('%s') ? %s : '%s'`" % (newvar, newvar, default)
 
 def parse_content(c):
     try:
@@ -28,12 +62,22 @@ def parse_content(c):
         for k,v in zip(data[::2], data[1::2]):
             rv[k.text] = unescape(v.text)
 
+        if re.search( r'\$\{\D', rv["content"] ):
+            rv["content"] = re.sub(r'\$\{([^\d}][^}:]*)(?::([^}]*))?\}', replace_vars, rv["content"])
+
         return rv
-    except ExpatError:
-        print "   Syntax Error"
+    except (ExpatError, ElementTree.ParseError) as detail:
+        print "   Syntax Error: %s" % (detail,)
+        print c
+        return None
+    except UnknownVariable as detail:
+        print "   Unknown variable: %s" % (detail,)
+        return None
+    except UnsupportedVariableExpression as detail:
+        print "   Unsupported variable expression: %s" % (detail,)
         return None
 
-def fetch_snippets(name):
+def fetch_snippets_from_svn(name):
     base_url = "http://svn.textmate.org/trunk/Bundles/" + name + ".tmbundle/"
     snippet_idx = base_url + "Snippets/"
 
@@ -57,6 +101,20 @@ def fetch_snippets(name):
 
     return rv
 
+def fetch_snippets_from_dir(path):
+    """ Fetch snippets from a given path"""
+
+    rv = []
+    for filename in glob.glob(os.path.join(path, '*.tmSnippet')):
+        print "Reading file %s" % filename
+        f = open(filename)
+        content = f.read()
+
+        cont = parse_content(content)
+        if cont:
+            name = os.path.splitext(os.path.basename(filename))[0]
+            rv.append((name, cont))
+    return rv
 
 def write_snippets(snip_descr, f):
 
@@ -64,6 +122,10 @@ def write_snippets(snip_descr, f):
         if "tabTrigger" not in d:
             continue
 
+        if "content" not in d or d["content"] is None:
+            print "SKIP: %s (no content)" % (d,)
+            continue
+
         f.write('snippet %s "%s"\n' % (d["tabTrigger"], name))
         f.write(d["content"].encode("utf-8") + "\n")
         f.write("endsnippet\n\n")
@@ -74,6 +136,13 @@ if __name__ == '__main__':
     import sys
 
     bundle = sys.argv[1]
-    rv = fetch_snippets(bundle)
-    write_snippets(rv, open("tm_" + bundle.lower() + ".snippets","w"))
+
+    if os.path.isdir(bundle):
+        name = sys.argv[2]
+        rv = fetch_snippets_from_dir(bundle)
+    else:
+        rv = fetch_snippets_from_svn(bundle)
+        name = bundle.lower()
+
+    write_snippets(rv, open("tm_" + name + ".snippets","w"))