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# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import subprocess
import zmake.util as util
def _get_num_commits(repo):
"""Get the number of commits that have been made.
If a Git repository is available, return the number of commits that have
been made. Otherwise return a fixed count.
Args:
repo: The path to the git repo.
Returns:
An integer, the number of commits that have been made.
"""
try:
result = subprocess.run(
["git", "-C", repo, "rev-list", "HEAD", "--count"],
check=True,
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
encoding="utf-8",
)
except subprocess.CalledProcessError:
commits = "9999"
else:
commits = result.stdout
return int(commits)
def _get_revision(repo):
"""Get the current revision hash.
If a Git repository is available, return the hash of the current index.
Otherwise return the hash of the VCSID environment variable provided by
the packaging system.
Args:
repo: The path to the git repo.
Returns:
A string, of the current revision.
"""
try:
result = subprocess.run(
["git", "-C", repo, "log", "-n1", "--format=%H"],
check=True,
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
encoding="utf-8",
)
except subprocess.CalledProcessError:
# Fall back to the VCSID provided by the packaging system.
# Format is 0.0.1-r425-032666c418782c14fe912ba6d9f98ffdf0b941e9 for
# releases and 9999-032666c418782c14fe912ba6d9f98ffdf0b941e9 for
# 9999 ebuilds.
vcsid = os.environ.get("VCSID", "9999-unknown")
revision = vcsid.rsplit("-", 1)[1]
else:
revision = result.stdout
return revision
def get_version_string(project, zephyr_base, modules, static=False):
"""Get the version string associated with a build.
Args:
project: a zmake.project.Project object
zephyr_base: the path to the zephyr directory
modules: a dictionary mapping module names to module paths
static: if set, create a version string not dependent on git
commits, thus allowing binaries to be compared between two
commits.
Returns:
A version string which can be placed in FRID, FWID, or used in
the build for the OS.
"""
major_version, minor_version, *_ = util.read_zephyr_version(zephyr_base)
project_id = project.project_dir.parts[-1]
num_commits = 0
if static:
vcs_hashes = "STATIC"
else:
repos = {
"os": zephyr_base,
**modules,
}
for repo in repos.values():
num_commits += _get_num_commits(repo)
vcs_hashes = ",".join(
"{}:{}".format(name, _get_revision(repo)[:6])
for name, repo in sorted(repos.items())
)
return "{}_v{}.{}.{}-{}".format(
project_id, major_version, minor_version, num_commits, vcs_hashes
)
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