codegen/: New --extendpath option for codegenerator so we can add extra path to search for included override files.

Original commit message from CVS:
* codegen/codegen.py:
* codegen/override.py:
New --extendpath option for codegenerator so we can add
extra path to search for included override files.

ChangeLog

@@ -1,3 +1,10 @@
+2006-03-14  Edward Hervey  <edward@fluendo.com>
+
+	* codegen/codegen.py:
+	* codegen/override.py:
+	New --extendpath option for codegenerator so we can add
+	extra path to search for included override files.
+
 2006-03-13  Edward Hervey  <edward@fluendo.com>
 
 	* gst/Makefile.am:

codegen/codegen.py

@@ -1227,17 +1227,24 @@ def register_types(parser):
 
 usage = 'usage: codegen.py [-o overridesfile] [-p prefix] defsfile'
 def main(argv):
-    o = override.Overrides()
     prefix = 'pygtk'
     outfilename = None
     errorfilename = None
-    opts, args = getopt.getopt(argv[1:], "o:p:r:t:D:",
+    extendpath = []
+    opts, args = getopt.getopt(argv[1:], "o:p:r:t:D:x",
                         ["override=", "prefix=", "register=", "outfilename=",
-                         "load-types=", "errorfilename="])
+                         "load-types=", "errorfilename=", "extendpath="])
     defines = {} # -Dkey[=val] options
+
+    for opt, arg in opts:
+        if opt in ('-x', '--extendpath'):
+            extendpath.append(arg)
+    extendpath.insert(0, os.getcwd())
+    o = override.Overrides(path=extendpath)
+    
     for opt, arg in opts:
         if opt in ('-o', '--override'):
-            o = override.Overrides(arg)
+            o = override.Overrides(arg, path=extendpath)
         elif opt in ('-p', '--prefix'):
             prefix = arg
         elif opt in ('-r', '--register'):

codegen/override.py

@@ -22,7 +22,7 @@ def class2cname(klass, method):
 import_pat = re.compile(r'\s*import\s+(\S+)\.([^\s.]+)\s+as\s+(\S+)')
 
 class Overrides:
-    def __init__(self, filename=None):
+    def __init__(self, filename=None, path=[]):
         self.modulename = None
 	self.ignores = {}
 	self.glob_ignores = []
@@ -38,13 +38,24 @@ class Overrides:
         self.imports = []
         self.defines = {}
         self.functions = {}
+        self.path = path
 	if filename:
             self.handle_file(filename)
 
     def handle_file(self, filename):
         oldpath = os.getcwd()
+
+        fp = None
+        for path in self.path:
+            os.chdir(oldpath)
+            os.chdir(os.path.abspath(path))
+            try:
+                fp = open(filename, 'r')
+            except:
+                continue
+        if not fp:
+            raise Exception, "Couldn't find file %s" % filename
         
-        fp = open(filename, 'r')
         dirname = os.path.dirname(os.path.abspath(filename))
 
         if dirname != oldpath: