feat: automate text direction extracting from CLDR

This fills is the data for all CLDR languages making issues like #1477
less likely to happen.

Makefile

@@ -4,7 +4,7 @@
 
 all: weblate_language_data/languages.py weblate_language_data/plural_tags.py PLURALS_DIFF.md $(wildcard weblate_language_data/locale/*/LC_MESSAGES/django.po) $(filter-out $(patsubst modules/cldr-json/cldr-json/cldr-localenames-full/main/%/languages.json,languages-po/%.po,$(wildcard modules/cldr-json/cldr-json/cldr-localenames-full/main/*/languages.json)),languages-po/en.po)
 
-weblate_language_data/languages.py: languages.csv aliases.csv cldr.csv extraplurals.csv default_countries.csv population.csv qt.csv $(wildcard modules/iso-codes/data/iso_*.json) scripts/generate-language-data
+weblate_language_data/languages.py: languages.csv aliases.csv cldr.csv extraplurals.csv default_countries.csv population.csv qt.csv rtl.csv $(wildcard modules/iso-codes/data/iso_*.json) scripts/generate-language-data
 	./scripts/generate-language-data
 
 PLURALS_DIFF.md: languages.csv cldr.csv gettext.csv l10n-guide.csv translate.csv scripts/list-diff
@@ -14,6 +14,9 @@ PLURALS_DIFF.md: languages.csv cldr.csv gettext.csv l10n-guide.csv translate.csv
 cldr.csv: modules/cldr-json/cldr-json/cldr-core/supplemental/plurals.json modules/cldr-json/cldr-json/cldr-localenames-full/main/en/languages.json scripts/export-cldr
 	./scripts/export-cldr
 
+rtl.csv: modules/cldr-json/cldr-json/cldr-misc-full/main/*/layout.json scripts/export-cldr-orientation languages.csv
+	./scripts/export-cldr-orientation
+
 qt.csv: modules/qttools/src/linguist/shared/numerus.cpp scripts/export-qt languages.csv
 	./scripts/export-qt
 

rtl.csv

@@ -0,0 +1,53 @@
+code
+ae
+aii
+ajp
+apc
+ar
+ar_BH
+ar_DZ
+ar_EG
+ar_KW
+ar_LY
+ar_MA
+ar_SA
+ar_YE
+ara
+arc
+ave
+bal
+bgn
+bqi
+ckb
+ckb_IR
+dv
+egy
+fa
+fa_AF
+fas
+ha
+he
+heb
+khw
+ks
+lrc
+luz
+ms_Arab
+mzn
+nqo
+pal
+per
+phn
+ps
+rhg
+sam
+sd
+sdh
+skr
+syc
+syr
+ug
+ur
+ur_IN
+urd
+yi

scripts/export-cldr-orientation

@@ -0,0 +1,45 @@
+#! /usr/bin/env python3
+
+# Copyright © Michal Čihař <michal@weblate.org>
+#
+# SPDX-License-Identifier: MIT
+
+import json
+from pathlib import Path
+import csv
+
+# Read languages
+with open("languages.csv") as csvfile:
+    reader = csv.reader(csvfile, delimiter=",")
+    next(reader)
+    LANGUAGES = list(reader)
+    LANGUAGE_CODES = {lang[0] for lang in LANGUAGES}
+
+# Read RTL
+with open("rtl.csv") as csvfile:
+    reader = csv.reader(csvfile, delimiter=",")
+    next(reader)
+    RTLS = list(reader)
+    RTL_CODES = {lang[0] for lang in RTLS}
+
+LAYOUTDIR = Path("modules/cldr-json/cldr-json/cldr-misc-full/main/")
+
+for layout_file in LAYOUTDIR.glob("*/layout.json"):
+    json_text = layout_file.read_text()
+    data = json.loads(json_text)
+    for key, value in data["main"].items():
+        code = key.replace("-", "_")
+        if code not in LANGUAGE_CODES:
+            continue
+        character_order = value["layout"]["orientation"]["characterOrder"]
+        if character_order == "right-to-left":
+            RTL_CODES.add(code)
+        elif character_order != "left-to-right":
+            print(f"Uknown order for {code}: {character_order})")
+
+print(RTL_CODES)
+
+with open("rtl.csv", "w") as handle:
+    handle.write("code\n")
+    for code in sorted(RTL_CODES):
+        handle.write(f"{code}\n")

scripts/generate-language-data

@@ -132,12 +132,19 @@ with open("cldr.csv") as csvfile:
         if existing != number:
             CLDRPLURALS.append((code, LANGUAGE_NAMES[code], number, equation))
 
-# Read extra plurals
+# Read default countries
 with open("default_countries.csv") as csvfile:
     reader = csv.reader(csvfile, delimiter=",")
     next(reader)
     DEFAULT_COUNTRIES = list(reader)
 
+# Read RTL
+with open("rtl.csv") as csvfile:
+    reader = csv.reader(csvfile, delimiter=",")
+    next(reader)
+    RTLS = list(reader)
+    RTL_CODES = {lang[0] for lang in RTLS}
+
 # Write language definitions
 with open("weblate_language_data/languages.py", "w") as output:
     output.write(HEADER)
@@ -195,6 +202,13 @@ with open("weblate_language_data/countries.py", "w") as output:
     for row in DEFAULT_COUNTRIES:
         output.write("    '{}',\n".format(*row))
     output.write(")\n")
+with open("weblate_language_data/rtl.py", "w") as output:
+    output.write(HEADER)
+    output.write("# List of RTL languages\n")
+    output.write("RTL_LANGS = {\n")
+    for code in sorted(RTL_CODES):
+        output.write(f'    "{code}",\n')
+    output.write("}\n")
 
 # Generate same check blacklist
 words = set()
@@ -322,6 +336,7 @@ subprocess.run(
         "pre-commit",
         "run",
         "--files",
+        "weblate_language_data/rtl.py",
         "weblate_language_data/countries.py",
         "weblate_language_data/aliases.py",
         "weblate_language_data/plurals.py",

weblate_language_data/rtl.py

@@ -2,21 +2,43 @@
 #
 # SPDX-License-Identifier: MIT
 
+"""
+Language data definitions.
+
+This is an automatically generated file, see scripts/generate-language-data
+
+Do not edit, please adjust language definitions in following repository:
+https://github.com/WeblateOrg/language-data
+"""
+# pylint: disable=line-too-long,too-many-lines
+
 # List of RTL languages
 RTL_LANGS = {
+    "ae",
+    "aii",
     "ajp",
     "apc",
     "ar",
+    "ar_BH",
+    "ar_DZ",
+    "ar_EG",
+    "ar_KW",
+    "ar_LY",
+    "ar_MA",
+    "ar_SA",
+    "ar_YE",
     "ara",
     "arc",
-    "ae",
-    "aii",
     "ave",
+    "bal",
+    "bgn",
     "bqi",
     "ckb",
+    "ckb_IR",
     "dv",
     "egy",
     "fa",
+    "fa_AF",
     "fas",
     "ha",
     "he",
@@ -26,18 +48,22 @@
     "lrc",
     "luz",
     "ms_Arab",
+    "mzn",
     "nqo",
     "pal",
     "per",
     "phn",
     "ps",
+    "rhg",
     "sam",
     "sd",
+    "sdh",
     "skr",
     "syc",
     "syr",
     "ug",
     "ur",
+    "ur_IN",
     "urd",
     "yi",
 }