Python script to convert color resource values in an Android project's `colors.xml` so they instead reference values from my MaterialDesignUtils library - see https://github.com/FarbodSalamat-Zadeh/MaterialDesignUtils

readme.md

MDU File Converter

This Python program can be used to convert colors in your Android project's values.xml file, so that they reference values from the MaterialDesignUtils library.

For example, your file may contain <color name="theme_primary">#F44336</color>, and this will be replaced with <color name="theme_primary">@color/mdu_red_500</color>. This makes it much easier to read what color you have set to theme_primary.

The MDU File Converter program is particularly useful if you have added or are using the MaterialDesignUtils library, as your color values will be referencing that library instead of lots of hex values.

Copyright

Copyright 2016 Farbod Salamat-Zadeh

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

color_file_converter.py

# coding utf-8

# Copyright 2016 Farbod Salamat-Zadeh
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


"""Reads a color xml file and replaces Material Design colors with references to colors from the MaterialDesignUtils
library for Android.
The color xml file is located by its full path from user input, and the new file is created and written in the same
directory, except with the name 'colors_new.xml'
"""

import os.path


def log(message):
    """Prints a log message"""
    #  print("LOG : " + message)
    pass


def convert(path):
    """Reads the specified color XML file and writes a new one, replacing Material Design colors with references to
    colors from the MaterialDesignUtils library for Android.
    :param path: The full path of the file to be 'converted'
    """
    list_file = open("colors_list.csv", "r")
    color_list = {}

    for line in list_file:
        values = line.split(",")
        val_hex = "#" + str(values[2].strip("\n"))  # 3rd column of csv
        new_name = "@color/mdu_" + values[0] + "_" + values[1]
        color_list[val_hex] = new_name
    log("Created dictionary from CSV file")
        
    old_file = open(path, "r+")
    path_pair = os.path.split(path)
    new_file = open(path_pair[0] + "\colors_new.xml", "a")

    small_tab = " " * 2
    tab = " " * 4
    description = "Generated by the MaterialDesignUtils File Converter library, from your previous color XML file"

    new_file.write('<?xml version="1.0" encoding="utf-8"?>\n')
    new_file.write("<!--\n" + small_tab + description + "\n" + small_tab + "-->")
    new_file.write("\n<resources>\n")
    log("Generated start tags")
    
    for line in old_file:
        has_written = False
        log("Processing: " + line.strip("\n"))
        if "<color name=" in line:  # checks for color tag
            for key in color_list:  # iterates through all colors
                if key in line:  # if line contains a hex from the dictionary
                    parts = line.split("#")
                    new_file.write(parts[0] + color_list[key] + "</color>\n")
                    log(tab + "Replaced color with MDU ref: " + color_list[key])
                    has_written = True
            if not has_written:  # if contains color, but is not material design color
                new_file.write(line)
        else:
            if "<?xml" in line \
                    or "<resources>" in line \
                    or "</resources>" in line:
                log(tab + "Cannot rewrite this line")
            else:
                new_file.write(line)

    new_file.write("</resources>")
    log("Generated end tag")

    print("\nThe new file has been created!")


while True:
    f_path = input("\nEnter the full path and name of the XML file to be converted: ")
    if not f_path.endswith(".xml"):
        f_path += ".xml"
    if os.path.isfile(f_path):
        print("\nConverting...")
        convert(f_path)
        break
    else:
        print("This file does not exist!")

colors_list.csv