gen-hb-version.py - mozsearch

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#!/usr/bin/env python3

"This tool is intended to be used from meson"

import os, sys, shutil, re

if len (sys.argv) < 4:

	sys.exit(__doc__)

version = sys.argv[1]

major, minor, micro = version.split (".")

OUTPUT = sys.argv[2]

INPUT = sys.argv[3]

CURRENT_SOURCE_DIR = os.path.dirname(INPUT)

try:

	with open (OUTPUT, "r", encoding='utf-8') as old_output:

		for line in old_output:

			old_version = re.match (r"#define HB_VERSION_STRING \"(\d.\d.\d)\"", line)

			if old_version and old_version[1] == version:

				sys.exit ()

except IOError:

	pass

with open (INPUT, "r", encoding='utf-8') as template:

	with open (OUTPUT, "wb") as output:

		output.write (template.read ()

			.replace ("@HB_VERSION_MAJOR@", major)

			.replace ("@HB_VERSION_MINOR@", minor)

			.replace ("@HB_VERSION_MICRO@", micro)

			.replace ("@HB_VERSION@", version)

			.encode ())

# copy it also to the source tree, but only if it has changed

baseline_filename = os.path.join (CURRENT_SOURCE_DIR, os.path.basename (OUTPUT))

with open(baseline_filename, "rb") as baseline:

	with open(OUTPUT, "rb") as generated:

		if baseline.read() != generated.read():

			shutil.copyfile (OUTPUT, baseline_filename)