Make Android GUI localizable (move hardcoded android:text to res/values/string.xml and rename in .java)

android_gui_localizer.py

#!/usr/bin/env python3

try:
    import sys
    import readline
    import re
    import fileinput
    from bs4 import BeautifulSoup
except Exception as e:
    print("Please install BeautifulSoup: pip3 install beautifulsoup4")
    sys.exit(1)


def to_camel_case(name):
    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()

type_conversion = {
    "button": "btn",
    "checkbox": "box",
    "org.runnerup.widget.titlespinner": "",
    "textview": "txt",
}


def layout_to_values(filelayout, filestrings):
    y = BeautifulSoup(open(filelayout).read())
    z = BeautifulSoup("xml")

    for line in fileinput.input(filestrings, inplace=True):
        if line != "</resources>\n":
            sys.stdout.write(line)

    for e in y.findAll(attrs={'android:id': not None}):
        is_text = e.has_attr("android:text")

        if is_text:
            if e["android:text"].startswith("@string/"):
                is_text = False  # no need to treat it
            if e.name not in type_conversion:
                print(filelayout + ": not handled type: {}".format(e.name))

        previous_id = e["android:id"][e["android:id"].find('/') + 1:]
        camel_case_id = to_camel_case(previous_id)

        if previous_id != camel_case_id:
            # new line separator
            print()
            print(filelayout + ": %sID:   %25s -----------> %s" %
                  ("TEXT" if is_text else "", previous_id, camel_case_id))
            # s = input(
            #     "Want to use another ID? (empty to keep this ID{})".format(
            #         "." if is_text else ", * to remove it"))
            # if not is_text and s == "*":
            #     print(filelayout + ": Remove ID:  %25s" %
            #          (camel_case_id))
            #     camel_case_id = None
            # elif s:
            #     print(filelayout + ": New ID:  %25s -----------> %s" %
            #          (camel_case_id, s))
            #     camel_case_id = s

        if is_text and e["android:text"]:  # check not empty too
            new_text_id = camel_case_id
            if type_conversion[e.name]:
                new_text_id += "_" + type_conversion[e.name]

            print(filelayout + ": Text: %25s -----------> %s" %
                  (e["android:text"], "@string/" + new_text_id))
            tag = z.new_tag("string")
            tag.string = e["android:text"]
            tag["name"] = new_text_id

            with open(filestrings, "ab") as strings_file:
                strings_file.write(bytes("\t" + str(tag) + "\n", 'UTF-8'))

        for line in fileinput.input(filelayout, inplace=True):
            # we want to delete it
            if camel_case_id is None:
                line = line.replace('android:id="@+id/' + previous_id + '"', '')
            else:
                line = line.replace(previous_id + '"', camel_case_id + '"')

            if is_text and e["android:text"]:
                line = line.replace(
                    "android:text=\"" + e["android:text"] + "\"",
                    "android:text=\"" + "@string/" + new_text_id + "\"")
            # this is used to write within file
            print(line, end="")

    with open(filestrings, "ab") as strings_file:
        strings_file.write(bytes("</resources>\n", 'UTF-8'))


def file_converter(filep):
    for line in fileinput.input(filep, inplace=True):
        pattern = "findViewById(R.id."
        if line.find(pattern) != -1:
            cast_type = line[line.find('(') + 1:line.find(')')]
            name = line[line.find(pattern) + len(pattern) - 5:]
            name = name[:name.find(')')]
            new_name = "R.id." + to_camel_case(name[5:])

            line = line.replace(name, new_name)
        print(line, end="")


if len(sys.argv) < 2:
    print(
        """Give me some args (.xml or .java)
    Example: {} res/values/strings.xml res/layout*/*.xml $(find src -name '*.java')
    """.format(sys.argv[0])
    )
    sys.exit(1)

xml_file = None
for arg in sys.argv[1:]:
    if arg[-5:] == ".java":
        file_converter(arg)
    elif arg[-4:] == ".xml":
        if not xml_file:
            xml_file = arg
        else:
            layout_to_values(arg, xml_file)