properties2json-converter/properties2js.py at master · R1G/properties2json-converter · GitHub

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import os
import json
import shutil
import re
import sys
import codecs

# given a valid <your file>.properties, produces <your file>.js in the same folder


def prop2js(inputPath):
    if (".properties" != inputPath[-11:]):
        raise NameError("invalid filename")

    inputText = open(inputPath).read()
    lines = inputText.split("\n")
    objects = {}  # we store every entry as key-value pair within objects

    for line in lines:
        if (len(line) == 0 or line[0] == '#' or line[0] == '!'):
            continue  # skipping comments
        equalIndex = line.find("=")
        if (equalIndex == -1):
            raise NameError(line)

        # Converting [] syntax to . for ease of parsing
        line = line.strip("]").replace("[", ".")
        match = re.split(r'\.', line[0: equalIndex+1], 1)
        level = objects
        oName = line[0:equalIndex]
        subName = line[0:equalIndex]
        # reads nested objects, split on " [ ] . = " symbols
        while(len(match) == 2 and match[1] != ""):
            oName = match[0]
            subName = match[1]
            if (oName not in level):
                level[oName] = {}
            match = re.split(r'\.', subName, 1)
            level = level[oName]
        level[subName.strip("[].=")] = line[equalIndex+1:]

    # preserves utf8 input
    with codecs.open(inputPath.replace(".properties", ".js"), 'w+', encoding='utf8') as output:
        output.write("var obj = {")
        data = json.dumps(objects, ensure_ascii=False,
                          indent=4, encoding='utf8')[1:-1]
        output.write(unicode(data))
        output.write("}")
        output.close()

    return

# recursively produces clone of .properties directories as .js


def convert(folderPath, outputPath):
    shutil.rmtree(outputPath, True)
    shutil.copytree(folderPath, outputPath)
    for (dirName, subdirList, fileList) in os.walk(outputPath):
        for fname in fileList:
            if (".properties" == fname[-11:]):
                prop2js(dirName+"/"+fname)
                os.remove(dirName+"/"+fname)
    return


def main():
    usage = "\nTo convert a file: python properties2js.py <FILE NAME>.properties \nTo convert folder: python properties2js.py <SRC> <DEST>\n"

    if (len(sys.argv) < 2 or len(sys.argv) > 3):
        print(usage)
        raise EnvironmentError("Incorrect number of arguments")

    if (len(sys.argv) == 2 and os.path.isdir(sys.argv[1])):
        print(usage)
        raise EnvironmentError("Expected a file where folder was provided")

    if (len(sys.argv) == 3 and os.path.isfile(sys.argv[1])):
        print(usage)
        raise EnvironmentError("Expected a folder where file was provided")

    if (len(sys.argv) == 3 and os.path.isfile(sys.argv[2])):
        print(usage)
        raise EnvironmentError("Destination must be a folder")

    if (os.path.isdir(sys.argv[1])):
        convert(sys.argv[1], sys.argv[2])
    if (os.path.isfile(sys.argv[1])):
        prop2js(sys.argv[1])
    return


main()