glibc/SOURCES/parse-SUPPORTED.py

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2022-05-17 10:24:40 +00:00
#!/usr/bin/python3
#
# This script turns localedata/SUPPORTED (whose path is passed as the
# first argument) into a normalized list of LANGUAGE "_" REGION pairs.
# (If there is no REGION defined, only LANGUAGE is used.) The list
# is written to standard output, with one element per line.
import sys
supported, = sys.argv[1:]
# Pairs seen so far. Used to suppress duplicates.
seen = set()
with open(supported) as inp:
for line in inp:
if line.startswith("#") or line == "SUPPORTED-LOCALES=\\\n":
# Comment or prefix.
continue
if not line.endswith(" \\\n"):
raise IOError("line without continuation: " + repr(line))
try:
slash = line.index("/")
except ValueError:
raise IOError("line without slash: " + repr(line))
spec = line[:slash]
for separator in ".@":
try:
# Strip charset, variant specifiers.
spec = spec[:spec.index(separator)]
except ValueError:
pass
seen.add(spec)
# The C locale does not correspond to a language.
seen.remove("C")
# The glibc source file is not sorted.
for spec in sorted(seen):
print(spec)
print() # The Lua generator produces a trailing newline.