Converts a TSV file into Xcode Localizable strings

tsv2localizable.py

#!/usr/bin/python3

import argparse
import csv
import datetime

# A simple script that converts a TSV file into Xcode Localizable strings
# TSV format:
'''
id, comment, en, ja
hello, comment, Hello, こんにちは
world, comment, World, 世界
'''

# Then convert to Xcode Localizable strings like this:
# ja.lproj/Localizable.strings
'''
/* comment */
"hello" = "こんにちは";
/* comment */
"world" = "世界";
'''
# en.lproj/Localizable.strings
'''
/* comment */
"hello" = "Hello";
/* comment */
"world" = "World";
'''

# Note: This script overrides the existing Localizable.strings

def main(input: str, out_dir: str):
    with open(input, 'r') as f:
        reader = csv.reader(f, delimiter="\t")
        header = next(reader)
        languages = header[2:]

        header_comment = f"""/*
Generated from {input}
Use tsv2localizable.py to update
Last Updated: {datetime.date.today()}
*/
"""
        localizables = [[header_comment] for _ in range(len(languages))]
        print(f"Found {len(languages)} languages: {languages}")

        for row in reader:
            id = row[0]
            comment = row[1]
            for i, _ in enumerate(languages):
                localizables[i].append(f'/* {comment} */')
                localizables[i].append(f'"{id}" = "{row[i+2]}";')

        print(localizables)
        # Write localizables to files
        for i, language in enumerate(languages):
            with open(f"{out_dir}/{language}.lproj/Localizable.strings", 'w') as f:
                f.write('\n'.join(localizables[i]))

if __name__ == '__main__':
    parser = argparse.ArgumentParser("Convert TSV to Xcode Localizable.strings")
    parser.add_argument("-i", "--input", type=str, help="Input TSV file")
    parser.add_argument("-o", "--out_dir", type=str, default='.', help="Output Xcode Localizable.strings file")

    args = parser.parse_args()
    main(args.input, args.out_dir)