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techpack/i18n.py

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Python
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Script to generate the template file and update the translation files.
# Copy the script into the mod or modpack root folder and run it there.
#
# Copyright (C) 2019 Joachim Stolberg, 2020 FaceDeer, 2020 Louis Royer
# LGPLv2.1+
#
# See https://github.com/minetest-tools/update_translations for
# potential future updates to this script.
from __future__ import print_function
import os, fnmatch, re, shutil, errno
from sys import argv as _argv
from sys import stderr as _stderr
# Running params
params = {"recursive": False,
"help": False,
"mods": False,
"verbose": False,
"folders": [],
"no-old-file": False
}
# Available CLI options
options = {"recursive": ['--recursive', '-r'],
"help": ['--help', '-h'],
"mods": ['--installed-mods'],
"verbose": ['--verbose', '-v'],
"no-old-file": ['--no-old-file']
}
# Strings longer than this will have extra space added between
# them in the translation files to make it easier to distinguish their
# beginnings and endings at a glance
doublespace_threshold = 60
def set_params_folders(tab: list):
'''Initialize params["folders"] from CLI arguments.'''
# Discarding argument 0 (tool name)
for param in tab[1:]:
stop_param = False
for option in options:
if param in options[option]:
stop_param = True
break
if not stop_param:
params["folders"].append(os.path.abspath(param))
def set_params(tab: list):
'''Initialize params from CLI arguments.'''
for option in options:
for option_name in options[option]:
if option_name in tab:
params[option] = True
break
def print_help(name):
'''Prints some help message.'''
print(f'''SYNOPSIS
{name} [OPTIONS] [PATHS...]
DESCRIPTION
{', '.join(options["help"])}
prints this help message
{', '.join(options["recursive"])}
run on all subfolders of paths given
{', '.join(options["mods"])}
run on locally installed modules
{', '.join(options["no-old-file"])}
do not create *.old files
{', '.join(options["verbose"])}
add output information
''')
def main():
'''Main function'''
set_params(_argv)
set_params_folders(_argv)
if params["help"]:
print_help(_argv[0])
elif params["recursive"] and params["mods"]:
print("Option --installed-mods is incompatible with --recursive")
else:
# Add recursivity message
print("Running ", end='')
if params["recursive"]:
print("recursively ", end='')
# Running
if params["mods"]:
print(f"on all locally installed modules in {os.path.abspath('~/.minetest/mods/')}")
run_all_subfolders("~/.minetest/mods")
elif len(params["folders"]) >= 2:
print("on folder list:", params["folders"])
for f in params["folders"]:
if params["recursive"]:
run_all_subfolders(f)
else:
update_folder(f)
elif len(params["folders"]) == 1:
print("on folder", params["folders"][0])
if params["recursive"]:
run_all_subfolders(params["folders"][0])
else:
update_folder(params["folders"][0])
else:
print("on folder", os.path.abspath("./"))
if params["recursive"]:
run_all_subfolders(os.path.abspath("./"))
else:
update_folder(os.path.abspath("./"))
#group 2 will be the string, groups 1 and 3 will be the delimiters (" or ')
#See https://stackoverflow.com/questions/46967465/regex-match-text-in-either-single-or-double-quote
pattern_lua_s = re.compile(r'[\.=^\t,{\(\s]N?S\(\s*(["\'])((?:\\\1|(?:(?!\1)).)*)(\1)[\s,\)]', re.DOTALL)
pattern_lua_fs = re.compile(r'[\.=^\t,{\(\s]N?FS\(\s*(["\'])((?:\\\1|(?:(?!\1)).)*)(\1)[\s,\)]', re.DOTALL)
pattern_lua_bracketed_s = re.compile(r'[\.=^\t,{\(\s]N?S\(\s*\[\[(.*?)\]\][\s,\)]', re.DOTALL)
pattern_lua_bracketed_fs = re.compile(r'[\.=^\t,{\(\s]N?FS\(\s*\[\[(.*?)\]\][\s,\)]', re.DOTALL)
# Handles "concatenation" .. " of strings"
pattern_concat = re.compile(r'["\'][\s]*\.\.[\s]*["\']', re.DOTALL)
pattern_tr = re.compile(r'(.*?[^@])=(.*)')
pattern_name = re.compile(r'^name[ ]*=[ ]*([^ \n]*)')
pattern_tr_filename = re.compile(r'\.tr$')
pattern_po_language_code = re.compile(r'(.*)\.po$')
#attempt to read the mod's name from the mod.conf file. Returns None on failure
def get_modname(folder):
try:
with open(os.path.join(folder, "mod.conf"), "r", encoding='utf-8') as mod_conf:
for line in mod_conf:
match = pattern_name.match(line)
if match:
return match.group(1)
except FileNotFoundError:
pass
return None
#If there are already .tr files in /locale, returns a list of their names
def get_existing_tr_files(folder):
out = []
for root, dirs, files in os.walk(os.path.join(folder, 'locale/')):
for name in files:
if pattern_tr_filename.search(name):
out.append(name)
return out
# A series of search and replaces that massage a .po file's contents into
# a .tr file's equivalent
def process_po_file(text):
# The first three items are for unused matches
text = re.sub(r'#~ msgid "', "", text)
text = re.sub(r'"\n#~ msgstr ""\n"', "=", text)
text = re.sub(r'"\n#~ msgstr "', "=", text)
# comment lines
text = re.sub(r'#.*\n', "", text)
# converting msg pairs into "=" pairs
text = re.sub(r'msgid "', "", text)
text = re.sub(r'"\nmsgstr ""\n"', "=", text)
text = re.sub(r'"\nmsgstr "', "=", text)
# various line breaks and escape codes
text = re.sub(r'"\n"', "", text)
text = re.sub(r'"\n', "\n", text)
text = re.sub(r'\\"', '"', text)
text = re.sub(r'\\n', '@n', text)
# remove header text
text = re.sub(r'=Project-Id-Version:.*\n', "", text)
# remove double-spaced lines
text = re.sub(r'\n\n', '\n', text)
return text
# Go through existing .po files and, if a .tr file for that language
# *doesn't* exist, convert it and create it.
# The .tr file that results will subsequently be reprocessed so
# any "no longer used" strings will be preserved.
# Note that "fuzzy" tags will be lost in this process.
def process_po_files(folder, modname):
for root, dirs, files in os.walk(os.path.join(folder, 'locale/')):
for name in files:
code_match = pattern_po_language_code.match(name)
if code_match == None:
continue
language_code = code_match.group(1)
tr_name = modname + "." + language_code + ".tr"
tr_file = os.path.join(root, tr_name)
if os.path.exists(tr_file):
if params["verbose"]:
print(f"{tr_name} already exists, ignoring {name}")
continue
fname = os.path.join(root, name)
with open(fname, "r", encoding='utf-8') as po_file:
if params["verbose"]:
print(f"Importing translations from {name}")
text = process_po_file(po_file.read())
with open(tr_file, "wt", encoding='utf-8') as tr_out:
tr_out.write(text)
# from https://stackoverflow.com/questions/600268/mkdir-p-functionality-in-python/600612#600612
# Creates a directory if it doesn't exist, silently does
# nothing if it already exists
def mkdir_p(path):
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else: raise
# Converts the template dictionary to a text to be written as a file
# dKeyStrings is a dictionary of localized string to source file sets
# dOld is a dictionary of existing translations and comments from
# the previous version of this text
def strings_to_text(dkeyStrings, dOld, mod_name, header_comments):
lOut = [f"# textdomain: {mod_name}\n"]
if header_comments is not None:
lOut.append(header_comments)
dGroupedBySource = {}
for key in dkeyStrings:
sourceList = list(dkeyStrings[key])
sourceList.sort()
sourceString = "\n".join(sourceList)
listForSource = dGroupedBySource.get(sourceString, [])
listForSource.append(key)
dGroupedBySource[sourceString] = listForSource
lSourceKeys = list(dGroupedBySource.keys())
lSourceKeys.sort()
for source in lSourceKeys:
localizedStrings = dGroupedBySource[source]
localizedStrings.sort()
lOut.append("")
lOut.append(source)
lOut.append("")
for localizedString in localizedStrings:
val = dOld.get(localizedString, {})
translation = val.get("translation", "")
comment = val.get("comment")
if len(localizedString) > doublespace_threshold and not lOut[-1] == "":
lOut.append("")
if comment != None:
lOut.append(comment)
lOut.append(f"{localizedString}={translation}")
if len(localizedString) > doublespace_threshold:
lOut.append("")
unusedExist = False
for key in dOld:
if key not in dkeyStrings:
val = dOld[key]
translation = val.get("translation")
comment = val.get("comment")
# only keep an unused translation if there was translated
# text or a comment associated with it
if translation != None and (translation != "" or comment):
if not unusedExist:
unusedExist = True
lOut.append("\n\n##### not used anymore #####\n")
if len(key) > doublespace_threshold and not lOut[-1] == "":
lOut.append("")
if comment != None:
lOut.append(comment)
lOut.append(f"{key}={translation}")
if len(key) > doublespace_threshold:
lOut.append("")
return "\n".join(lOut) + '\n'
# Writes a template.txt file
# dkeyStrings is the dictionary returned by generate_template
def write_template(templ_file, dkeyStrings, mod_name):
# read existing template file to preserve comments
existing_template = import_tr_file(templ_file)
text = strings_to_text(dkeyStrings, existing_template[0], mod_name, existing_template[2])
mkdir_p(os.path.dirname(templ_file))
with open(templ_file, "wt", encoding='utf-8') as template_file:
template_file.write(text)
# Gets all translatable strings from a lua file
def read_lua_file_strings(lua_file):
lOut = []
with open(lua_file, encoding='utf-8') as text_file:
text = text_file.read()
#TODO remove comments here
text = re.sub(pattern_concat, "", text)
strings = []
for s in pattern_lua_s.findall(text):
strings.append(s[1])
for s in pattern_lua_bracketed_s.findall(text):
strings.append(s)
for s in pattern_lua_fs.findall(text):
strings.append(s[1])
for s in pattern_lua_bracketed_fs.findall(text):
strings.append(s)
for s in strings:
s = re.sub(r'"\.\.\s+"', "", s)
s = re.sub("@[^@=0-9]", "@@", s)
s = s.replace('\\"', '"')
s = s.replace("\\'", "'")
s = s.replace("\n", "@n")
s = s.replace("\\n", "@n")
s = s.replace("=", "@=")
lOut.append(s)
return lOut
# Gets strings from an existing translation file
# returns both a dictionary of translations
# and the full original source text so that the new text
# can be compared to it for changes.
# Returns also header comments in the third return value.
def import_tr_file(tr_file):
dOut = {}
text = None
header_comment = None
if os.path.exists(tr_file):
with open(tr_file, "r", encoding='utf-8') as existing_file :
# save the full text to allow for comparison
# of the old version with the new output
text = existing_file.read()
existing_file.seek(0)
# a running record of the current comment block
# we're inside, to allow preceeding multi-line comments
# to be retained for a translation line
latest_comment_block = None
for line in existing_file.readlines():
line = line.rstrip('\n')
if line[:3] == "###":
if header_comment is None:
# Save header comments
header_comment = latest_comment_block
# Stip textdomain line
tmp_h_c = ""
for l in header_comment.split('\n'):
if not l.startswith("# textdomain:"):
tmp_h_c += l + '\n'
header_comment = tmp_h_c
# Reset comment block if we hit a header
latest_comment_block = None
continue
if line[:1] == "#":
# Save the comment we're inside
if not latest_comment_block:
latest_comment_block = line
else:
latest_comment_block = latest_comment_block + "\n" + line
continue
match = pattern_tr.match(line)
if match:
# this line is a translated line
outval = {}
outval["translation"] = match.group(2)
if latest_comment_block:
# if there was a comment, record that.
outval["comment"] = latest_comment_block
latest_comment_block = None
dOut[match.group(1)] = outval
return (dOut, text, header_comment)
# Walks all lua files in the mod folder, collects translatable strings,
# and writes it to a template.txt file
# Returns a dictionary of localized strings to source file sets
# that can be used with the strings_to_text function.
def generate_template(folder, mod_name):
dOut = {}
for root, dirs, files in os.walk(folder):
for name in files:
if fnmatch.fnmatch(name, "*.lua"):
fname = os.path.join(root, name)
found = read_lua_file_strings(fname)
if params["verbose"]:
print(f"{fname}: {str(len(found))} translatable strings")
for s in found:
sources = dOut.get(s, set())
sources.add(f"### {os.path.basename(fname)} ###")
dOut[s] = sources
if len(dOut) == 0:
return None
templ_file = os.path.join(folder, "locale/template.txt")
write_template(templ_file, dOut, mod_name)
return dOut
# Updates an existing .tr file, copying the old one to a ".old" file
# if any changes have happened
# dNew is the data used to generate the template, it has all the
# currently-existing localized strings
def update_tr_file(dNew, mod_name, tr_file):
if params["verbose"]:
print(f"updating {tr_file}")
tr_import = import_tr_file(tr_file)
dOld = tr_import[0]
textOld = tr_import[1]
textNew = strings_to_text(dNew, dOld, mod_name, tr_import[2])
if textOld and textOld != textNew:
print(f"{tr_file} has changed.")
if not params["no-old-file"]:
shutil.copyfile(tr_file, f"{tr_file}.old")
with open(tr_file, "w", encoding='utf-8') as new_tr_file:
new_tr_file.write(textNew)
# Updates translation files for the mod in the given folder
def update_mod(folder):
print(folder)
modname = get_modname(folder)
if modname is not None:
process_po_files(folder, modname)
print(f"Updating translations for {modname}")
data = generate_template(folder, modname)
if data == None:
print(f"No translatable strings found in {modname}")
else:
for tr_file in get_existing_tr_files(folder):
update_tr_file(data, modname, os.path.join(folder, "locale/", tr_file))
else:
print(f"\033[31mUnable to find modname in folder {folder}.\033[0m", file=_stderr)
#exit(1)
# Determines if the folder being pointed to is a mod or a mod pack
# and then runs update_mod accordingly
def update_folder(folder):
is_modpack = os.path.exists(os.path.join(folder, "modpack.txt")) or os.path.exists(os.path.join(folder, "modpack.conf"))
if is_modpack:
subfolders = [f.path for f in os.scandir(folder) if f.is_dir()]
for subfolder in subfolders:
update_mod(subfolder + "/")
else:
update_mod(folder)
print("Done.")
def run_all_subfolders(folder):
for modfolder in [f.path for f in os.scandir(folder) if f.is_dir()]:
update_folder(modfolder + "/")
main()
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