update_locale.py

# python3 script to update localization files.

import glob
import subprocess
import json
import os

def update_other_languages(base):
    assert base.endswith(".en.po")
    for other in glob.glob(base[:-5] + "*.po"):
        if other == base:
            continue
        print("Merge %s -> %s" % (base, other))
        cmd = ["msgmerge", "-U", other, base]
        subprocess.run(cmd, check=True)


os.makedirs("scripts/locale", exist_ok=True)
for script in glob.glob("scripts/**/*.lua", recursive=True):
    output = script.replace(".lua", ".en.po").replace("scripts/", "scripts/locale/")
    info = {}
    key = None
    for line in open(script):
        if not line.startswith("--"):
            break
        if line.startswith("---"):
            if key is not None:
                info[key] = info[key] + "\n" + line[3:].strip()
        elif ":" in line:
            key, _, value = line[2:].partition(":")
            if '[' in key and key.endswith(']'):
                additional = key[key.find('[')+1:-1]
                key = key[:key.find('[')].lower().strip()
                key = "%s[%s]" % (key, additional)
            else:
                key = key.strip().lower()
            value = value.strip()
            info[key] = value
    f = open(output, "wt")
    if "name" in info:
        f.write("# Scenario name\n")
        f.write("msgid %s\n" % (json.dumps(info["name"])))
        f.write("msgstr \"\"\n")
        if "description" in info:
            f.write("# Scenario description\n")
            f.write("msgid %s\n" % (json.dumps(info["description"].replace("\r", ""))))
            f.write("msgstr \"\"\n")
        for key, value in info.items():
            if key.startswith("setting[") and key.endswith("]"):
                setting_name = key[8:-1]
                f.write("# Scenario setting\n")
                f.write("msgctxt %s\n" % (json.dumps("setting")))
                f.write("msgid %s\n" % (json.dumps(setting_name)))
                f.write("msgstr \"\"\n")
                f.write("msgctxt %s\n" % (json.dumps("setting")))
                f.write("msgid %s\n" % (json.dumps(value)))
                f.write("msgstr \"\"\n")
                for key2, value2 in info.items():
                    if key2.startswith(setting_name.lower() + "[") and key2.endswith("]"):
                        setting_value = key2[len(setting_name) + 1:-1]
                        if "|" in setting_value:
                            setting_value = setting_value[:setting_value.find("|")]
                        f.write("msgctxt %s\n" % (json.dumps(setting_name)))
                        f.write("msgid %s\n" % (json.dumps(setting_value)))
                        f.write("msgstr \"\"\n")
                        f.write("msgctxt %s\n" % (json.dumps(setting_name)))
                        f.write("msgid %s\n" % (json.dumps(value2)))
                        f.write("msgstr \"\"\n")
    f.close()

    cmd = ["xgettext", "--keyword=_:1c,2", "--keyword=_:1", "--omit-header", "-j", "-d", output[:-3], "-C", "-"]
    subprocess.run(cmd, check=True, input=b"")
    pre = open(output, "rt").read()
    cmd = ["xgettext", "--keyword=_:1c,2", "--keyword=_:1", "--add-comments=TRANSLATORS", "--omit-header", "-j", "-d" , output[:-3], script]
    subprocess.run(cmd, check=True)
    post = open(output, "rt").read()
    if pre == post and "name" not in info:
        os.unlink(output)
        print("Skipped %s" % (script))
    else:
        update_other_languages(output)
        print("Done %s" % (script))

update_other_languages("resources/locale/main.en.po")