Now i3 theme can be generated from config files.

src/config.py

@@ -1,4 +1,4 @@
-import re,tempfile,shutil
+import re,tempfile,shutil,theme
 
 config_keys=["client.focused",
              "client.focused_inactive",
@@ -67,6 +67,30 @@ def extract(config_file):
     tmp.close()
     return(tmp.name)
 
+
+def extract_theme(config_file):
+    """
+    Return a ThemeBuilder object of the config_file file.
+    """
+    f=open(config_file,"r")
+    build=theme.ThemeBuilder()
+    in_colors=False
+    for line_orig in f:
+        line=no_comment(line_orig)
+        is_theme_line=False
+        for key in config_keys:
+            if contains(".*"+key+"\s",line):
+                is_theme_line=True
+        if contains(".*colors",line):
+            in_colors=True
+        if is_theme_line or in_colors:
+            build.parse(line_orig) # Seems to by strange to have comment here
+        if contains(".*}",line) and in_colors:
+            in_colors=False    
+    f.close()
+    return(build)
+
+
 def write_theme(tmp_config,theme):
     """
     Write the theme in a temporary file

src/i3-colors.py

@@ -9,16 +9,8 @@ def log(msg,title=""):
         print(msg)
 ###########################
 
-
-##### Parse Arguments #####
-args_parser = argparse.ArgumentParser(description='I3 Window Manager Colors Themer.')
-args_parser.add_argument('theme_path', type=str, nargs='?',
-                    help='I3 YAML theme path.')
-args_parser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
-args = args_parser.parse_args()
-###########################
-
 ##### Apply Theme #####
+def apply(args):
     loaded_theme=theme.load(args.theme_path)
     config.apply(os.environ["HOME"]+"/.config/i3/config",loaded_theme)
     for meta_key,meta_value in loaded_theme["meta"].items():
@@ -27,3 +19,26 @@ if args.restart:
             subprocess.Popen("i3-msg restart".split(),stdout=subprocess.PIPE, stderr=subprocess.PIPE) 
 #######################
 
+##### Extract Theme #####
+def extract(args):
+    theme=config.extract_theme(args.config_path)
+    theme.dump()
+#######################
+
+##### Parse Arguments #####
+argsMainParser = argparse.ArgumentParser(description='I3 Window Manager Colors Themer.')
+argsSubParsers = argsMainParser.add_subparsers()
+argsApplyParser = argsSubParsers.add_parser("apply")
+argsApplyParser.add_argument('theme_path', type=str, nargs='?',
+                    help='I3 YAML theme path.')
+argsApplyParser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
+argsApplyParser.set_defaults(func=apply)
+
+argsExtractParser = argsSubParsers.add_parser("extract")
+argsExtractParser.add_argument('config_path', type=str, nargs='?',
+                    help='Extract theme from config file.')
+argsExtractParser.set_defaults(func=extract)
+
+args = argsMainParser.parse_args()
+args.func(args)
+###########################

src/theme.py

@@ -71,3 +71,39 @@ def load(theme_file):
     theme=configure(theme)
     validate(theme)
     return(theme)
+
+class ThemeBuilder:
+    def __init__(self):
+        self.theme={"meta": {"description": "Generated From i3-colors"},
+                        "window_colors":dict(),
+                        "bar_colors":dict()}
+    def dump(self):
+        print(yaml.dump(self.theme))
+
+    def parse(self,line):
+        if re.match("client.*",line):
+            tokens=line.split()
+            key=tokens[0].replace("client.","")
+            tokens.pop(0)
+            subkeys=["border","background","text","indicator","child_border"]
+            self.theme["window_colors"][key]=dict()
+            for token in tokens:
+                self.theme["window_colors"][key][subkeys[0]]=token
+                subkeys.pop(0)
+        elif re.match(".*background.*",line):
+            self.theme["bar_colors"]["background"]=line.split()[1]
+        elif re.match(".*statusline.*",line):
+            self.theme["bar_colors"]["statusline"]=line.split()[1]
+        elif re.match(".*separator.*",line):
+            self.theme["bar_colors"]["separator"]=line.split()[1]
+        elif re.match(".*_workspace.*",line):
+            tokens=line.split()
+            key=tokens[0]
+            tokens.pop(0)
+            subkeys=["border","background","text"]
+            self.theme["bar_colors"][key]=dict()
+            for token in tokens:
+                self.theme["bar_colors"][key][subkeys[0]]=token
+                subkeys.pop(0)
+            
+