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#!/usr/bin/env python3
# Parses all the .po files and generates binary language strings to be loaded
# at runtime via embedded data.
import os, sys
BUILD_LANGS = ['en', 'es', 'fi', 'ru', 'zh_Hans']
MODE = 'compile'
ESCAPES = {
'\\': '\\',
'"': '"',
'n': '\n',
'r': '\r',
't': '\t'
}
BASE_STRINGS = {}
if '--new' in sys.argv:
MODE = 'new'
def unquote(string):
txt = string.strip()
if txt[0] != '"' or txt[-1] != '"':
raise Exception("invalid quoted string: " + string)
txt = txt[1:-1]
out = ''
is_escape = False
for c in txt:
if is_escape:
out += ESCAPES[c]
is_escape = False
continue
if c == '\\':
is_escape = True
else:
out += c
return out
def parse_po(src):
messages = []
is_multi = False # string is multiple lines
is_plural = False
msg_id, msg_str, msg_index = None, None, None
for line in open(src, 'rt', encoding='utf-8').readlines():
line = line.strip()
if is_multi:
if len(line) == 0 or line[0] != '"':
if msg_id:
messages.append((msg_id, msg_str, msg_index))
is_multi = False
else:
msg_str += unquote(line)
if line.startswith('msgid_plural'):
msg_id = unquote(line[12:])
is_plural = True
elif line.startswith('msgid'):
msg_id = unquote(line[6:])
is_plural = False
elif line.startswith('msgstr'):
if line[6] == '[':
msg_index = int(line[7])
line = line[9:]
else:
msg_index = None
line = line[6:]
if line.endswith(' ""'):
is_multi = True
msg_str = ''
else:
msg_str = unquote(line)
if msg_id:
messages.append((msg_id, msg_str, msg_index))
# Apply plural indices to ids.
pluralized = []
for msg_id, msg_str, msg_index in messages:
if not msg_index is None:
msg_id = f'{msg_id[:-1]}{msg_index}'
pluralized.append((msg_id, msg_str))
#print(msg_id, '=>', msg_str)
return pluralized
def compile_string(msg_id, msg_str):
return msg_id.encode('utf-8') + bytes([0]) + \
msg_str.encode('utf-8') + bytes([0])
if MODE == 'compile':
for msg_id, msg_str in parse_po('en.po'):
BASE_STRINGS[msg_id] = msg_str
for src in os.listdir('.'):
if src.endswith('.po') and src.split('.')[0] in BUILD_LANGS:
# Make a binary blob with strings sorted by ID.
have_ids = set()
compiled = bytes()
lang = parse_po(src)
for msg_id, _ in lang:
have_ids.add(msg_id)
# Take missing strings from the base language.
for msg_id in BASE_STRINGS:
if msg_id not in have_ids:
print(src, 'missing:', msg_id)
lang.append((msg_id, BASE_STRINGS[msg_id]))
for msg_id, msg_str in sorted(lang):
compiled += compile_string(msg_id, msg_str)
open(f'../res/lang/{src[:-3]}.bin', 'wb').write(compiled)
elif MODE == 'new':
messages = parse_po('en.po')
f = open('new.po', 'wt', encoding='utf-8')
for msg_id, _ in messages:
print(f'\nmsgid "{msg_id}"\nmsgstr ""\n', file=f)
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