From 37549b6faae0767ae0813ea1da76a8d6587c4dfe Mon Sep 17 00:00:00 2001 From: Dudemanguy Date: Fri, 15 Oct 2021 22:58:25 -0500 Subject: build: add version.py for generating version.h version.h is essential for building, and its generation was done by a shell script. Strictly speaking, python should in general be more portable (windows), and would be better for the upcoming meson build to simply just execute a python script. version.py has some small differences with version.sh which shouldn't matter but they are noted below. - version.sh accepted several arguments that seemed useless (like --cwd). These were removed from version.py. - version.py takes either no arguments (prints the version) or it takes exactly one argument specifying the complete path of where the header should be generated. - version.sh attempted to read a file named "snapshot_version". The comments noted that this was for "daily tarball snapshots". Such a file does not exist in the source tree, and it's not really clear that anyone actually uses this. This logic was removed from version.py. - version.py reads the SOURCE_DATE_EPOCH environment variable. Some distros use this for reproducible builds. Technically you could also just disable the build date but this is only a couple of extra lines and maybe it's prettier than UNKNOWN. - version.py also doesn't attempt to display timezone information in the build date. It only shows UTC time. --- version.py | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100755 version.py diff --git a/version.py b/version.py new file mode 100755 index 0000000000..7da2d5a459 --- /dev/null +++ b/version.py @@ -0,0 +1,45 @@ +#!/usr/bin/env python3 + +import os +import sys +import time + +from datetime import datetime,timezone +from shutil import which +from subprocess import check_output + +srcdir = os.path.dirname(os.path.abspath(sys.argv[0])) +git_dir = os.path.join(srcdir, ".git") +git = which('git') + +if git and os.path.exists(git_dir): + version = check_output([git, "-C", srcdir, "describe", "--always", "--tags", + "--dirty"], encoding="UTF-8") + version = version[1:].strip() +else: + version_path = os.path.join(srcdir, "VERSION") + with open(version_path, "r") as f: + version = f.readline().strip() + +if len(sys.argv) < 2: + print(version) + sys.exit() + +date = datetime.utcfromtimestamp(int(os.environ.get('SOURCE_DATE_EPOCH', time.time()))) +if date == "": + date = datetime.now(timezone.utc).astimezone() +date_str = date.strftime("%a %b %d %I:%M:%S %Y") + +NEW_REVISION = "#define VERSION \"" + version + "\"\n" +OLD_REVISION = "" +BUILDDATE = "#define BUILDDATE \"" + date_str + "\"\n" +MPVCOPYRIGHT = "#define MPVCOPYRIGHT \"Copyright \u00A9 2000-2021 mpv/MPlayer/mplayer2 projects\"" + "\n" + +if os.path.isfile(sys.argv[1]): + with open(sys.argv[1], "r") as f: + OLD_REVISION = f.readline() + +if NEW_REVISION != OLD_REVISION: + with open(sys.argv[1], "w", encoding="utf-8") as f: + f.writelines([NEW_REVISION, BUILDDATE, MPVCOPYRIGHT]) + -- cgit v1.2.3