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#!/usr/bin/env python
# Copyright 2014 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
Script to set v8's version file to the version given by the latest tag.
"""
import os
import re
import subprocess
import sys
CWD = os.path.abspath(
os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
VERSION_CC = os.path.join(CWD, "src", "version.cc")
def main():
tag = subprocess.check_output(
"git describe --tags",
shell=True,
cwd=CWD,
).strip()
assert tag
# Check for commits not exactly matching a tag. Those are candidate builds
# for the next version. The output has the form
# <tag name>-<n commits>-<hash>.
if "-" in tag:
version = tag.split("-")[0]
candidate = "1"
else:
version = tag
candidate = "0"
version_levels = version.split(".")
# Set default patch level if none is given.
if len(version_levels) == 3:
version_levels.append("0")
assert len(version_levels) == 4
major, minor, build, patch = version_levels
# Increment build level for candidate builds.
if candidate == "1":
build = str(int(build) + 1)
patch = "0"
# Modify version.cc with the new values.
with open(VERSION_CC, "r") as f:
text = f.read()
output = []
for line in text.split("\n"):
for definition, substitute in (
("MAJOR_VERSION", major),
("MINOR_VERSION", minor),
("BUILD_NUMBER", build),
("PATCH_LEVEL", patch),
("IS_CANDIDATE_VERSION", candidate)):
if line.startswith("#define %s" % definition):
line = re.sub("\d+$", substitute, line)
output.append(line)
with open(VERSION_CC, "w") as f:
f.write("\n".join(output))
# Log what was done.
candidate_txt = " (candidate)" if candidate == "1" else ""
patch_txt = ".%s" % patch if patch != "0" else ""
version_txt = ("%s.%s.%s%s%s" %
(major, minor, build, patch_txt, candidate_txt))
print "Modified version.cc. Set V8 version to %s" % version_txt
return 0
if __name__ == "__main__":
sys.exit(main())
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