mirror of
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b71edfaa4e
This is the first commit in a series that will reformat all the python files in the LLVM repository. Reformatting is done with `black`. See more information here: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Reviewed By: jhenderson, JDevlieghere, MatzeB Differential Revision: https://reviews.llvm.org/D150545
111 lines
3.4 KiB
Python
Executable File
111 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Gets the current revision and writes it to VCSRevision.h."""
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import argparse
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import os
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import subprocess
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import sys
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THIS_DIR = os.path.abspath(os.path.dirname(__file__))
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LLVM_DIR = os.path.dirname(os.path.dirname(os.path.dirname(THIS_DIR)))
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def which(program):
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# distutils.spawn.which() doesn't find .bat files,
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# https://bugs.python.org/issue2200
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for path in os.environ["PATH"].split(os.pathsep):
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candidate = os.path.join(path, program)
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if os.path.isfile(candidate) and os.access(candidate, os.X_OK):
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return candidate
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return None
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument(
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"-d",
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"--depfile",
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help="if set, writes a depfile that causes this script "
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"to re-run each time the current revision changes",
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)
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parser.add_argument(
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"--write-git-rev",
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action="store_true",
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help="if set, writes git revision, else writes #undef",
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)
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parser.add_argument(
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"--name",
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action="append",
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help="if set, writes a depfile that causes this script "
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"to re-run each time the current revision changes",
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)
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parser.add_argument("vcs_header", help="path to the output file to write")
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args = parser.parse_args()
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vcsrevision_contents = ""
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if args.write_git_rev:
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git, use_shell = which("git"), False
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if not git:
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git = which("git.exe")
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if not git:
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git, use_shell = which("git.bat"), True
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git_dir = (
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subprocess.check_output(
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[git, "rev-parse", "--git-dir"], cwd=LLVM_DIR, shell=use_shell
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)
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.decode()
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.strip()
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)
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if not os.path.isdir(git_dir):
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print('.git dir not found at "%s"' % git_dir, file=sys.stderr)
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return 1
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rev = (
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subprocess.check_output(
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[git, "rev-parse", "--short", "HEAD"], cwd=git_dir, shell=use_shell
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)
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.decode()
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.strip()
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)
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url = (
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subprocess.check_output(
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[git, "remote", "get-url", "origin"], cwd=git_dir, shell=use_shell
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)
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.decode()
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.strip()
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)
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for name in args.name:
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vcsrevision_contents += '#define %s_REVISION "%s"\n' % (name, rev)
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vcsrevision_contents += '#define %s_REPOSITORY "%s"\n' % (name, url)
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else:
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for name in args.name:
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vcsrevision_contents += "#undef %s_REVISION\n" % name
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vcsrevision_contents += "#undef %s_REPOSITORY\n" % name
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# If the output already exists and is identical to what we'd write,
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# return to not perturb the existing file's timestamp.
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if (
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os.path.exists(args.vcs_header)
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and open(args.vcs_header).read() == vcsrevision_contents
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):
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return 0
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# http://neugierig.org/software/blog/2014/11/binary-revisions.html
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if args.depfile:
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build_dir = os.getcwd()
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with open(args.depfile, "w") as depfile:
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depfile.write(
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"%s: %s\n"
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% (
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args.vcs_header,
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os.path.relpath(os.path.join(git_dir, "logs", "HEAD"), build_dir),
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)
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)
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open(args.vcs_header, "w").write(vcsrevision_contents)
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if __name__ == "__main__":
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sys.exit(main())
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