i3-color-rofi

#!/usr/bin/env python

# Fetches the current i3 wm colors and provides an options string to color rofi
# Usage: rofi <your-options> $(i3-color-rofi)
# by Oliver Kraitschy - http://okraits.de

from os import getenv

# SETTINGS
config_path = getenv("HOME") + "/.i3/config"

# variables
config_file = None
lines = None
normal_bg = None
normal_fg = None
selected_bg = None
selected_fg = None
normal_bg_var = False
normal_fg_var = False
selected_bg_var = False
selected_fg_var = False
cmd_string = ""

if __name__ == "__main__":
    
    # open config file
    try:
        config_file = open(config_path, "r")
    except IOError:
        print("Error: i3 config file could not be opened.")
        exit(1)
    # read all lines into a list
    lines = config_file.readlines()
    config_file.close()
    
    # loop over lines and find matches
    for line in lines:
        cols = line.split()
        
        # for all lines not empty
        if len(cols) > 0:
            # normal background
            if cols[0] == "client.unfocused":
                normal_bg = cols[2]
                if normal_bg[0] == "$":
                    normal_bg_var = True
                # normal foreground
                normal_fg = cols[3]
                if normal_fg[0] == "$":
                    normal_fg_var = True
            # selected background
            if cols[0] == "client.focused":
                selected_bg = cols[2]
                if selected_bg[0] == "$":
                    selected_bg_var = True
                # selected foreground
                selected_fg = cols[3]
                if selected_fg[0] == "$":
                    selected_fg_var = True
    
    # at least one variable was used, we need to find the real values
    if normal_bg_var or normal_fg_var or selected_bg_var or selected_fg_var:
        for line in lines:
            cols = line.split()
            
            # for all lines starting with "set"
            if len(cols) > 0 and cols[0] == "set":
                if normal_bg_var and cols[1] == normal_bg:
                    normal_bg = cols[2]
                if normal_fg_var and cols[1] == normal_fg:
                    normal_fg = cols[2]
                if selected_bg_var and cols[1] == selected_bg:
                    selected_bg = cols[2]
                if selected_fg_var and cols[1] == selected_fg:
                    selected_fg = cols[2]
    
    if normal_bg is not None:
        cmd_string += "-bg " + normal_bg + " "
    if normal_fg is not None:
        cmd_string += "-fg " + normal_fg + " "
    if selected_bg is not None:
        cmd_string += "-hlbg " + selected_bg + " "
    if selected_fg is not None:
        cmd_string += "-hlfg " + selected_fg + " "
    print(cmd_string)
    exit(0)