Process file; icons test drawing; new icons.

process.py

@@ -0,0 +1,69 @@
+import copy
+
+def get_color(color, scheme):
+    if color in scheme['colors']:
+        return scheme['colors'][color]
+    else:
+        m = re.match('^(\\#)?(?P<color1>[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f])' + \
+            '(?P<color2>[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f])?$', color)
+        if m:
+            if 'color2' in m.groups():
+                return m.group('color1') + m.group('color2')
+            else:
+                return ''.join(map(lambda x: x + x, m.group('color1')))
+    return '444444'
+
+def get_icon(tags, scheme, fill='444444'):
+    tags_hash = ','.join(tags.keys()) + ':' + \
+        ','.join(map(lambda x: str(x), tags.values()))
+    if tags_hash in scheme['cache']:
+        return scheme['cache'][tags_hash]
+    main_icon = None
+    extra_icons = []
+    processed = set()
+    for matcher in scheme['tags']:
+        matched = True
+        for key in matcher['tags']:
+            if not key in tags:
+                matched = False
+                break
+            if matcher['tags'][key] != '*' and matcher['tags'][key] != tags[key]:
+                matched = False
+                break
+        if 'no_tags' in matcher:
+            for no_tag in matcher['no_tags']:
+                if no_tag in tags.keys():
+                    matched = False
+                    break
+        if matched:
+            if 'draw' in matcher and not matcher['draw']:
+                processed = set(matcher['tags'].keys())
+            if 'icon' in matcher:
+                main_icon = copy.deepcopy(matcher['icon'])
+                processed = set(matcher['tags'].keys())
+            if 'over_icon' in matcher:
+                main_icon += matcher['over_icon']
+                for key in matcher['tags'].keys():
+                    processed.add(key)
+            if 'add_icon' in matcher:
+                extra_icons += matcher['add_icon']
+                for key in matcher['tags'].keys():
+                    processed.add(key)
+            if 'color' in matcher:
+                fill = scheme['colors'][matcher['color']]
+                for key in matcher['tags'].keys():
+                    processed.add(key)
+    for color_name in ['color', 'colour', 'building:colour']:
+        if color_name in tags:
+            fill = get_color(tags[color_name], scheme)
+            if fill != '444444':
+                processed.add(color_name)
+            else:
+                print 'No color ' + tags[color_name] + '.'
+    if main_icon:
+        returned = [main_icon] + extra_icons, fill, processed
+    else:
+        returned = [], fill, processed
+    scheme['cache'][tags_hash] = returned
+    return returned
+