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#!/usr/bin/python3
import argparse
import contextlib
import os
import shutil
import subprocess
import sys
def format_title(title):
box = {
"tl": "╔",
"tr": "╗",
"bl": "╚",
"br": "╝",
"h": "═",
"v": "║",
}
hline = box["h"] * (len(title) + 2)
return "\n".join(
[
f"{box['tl']}{hline}{box['tr']}",
f"{box['v']} {title} {box['v']}",
f"{box['bl']}{hline}{box['br']}",
]
)
def rm_rf(path):
try:
shutil.rmtree(path)
except FileNotFoundError:
pass
def sanitize_path(name):
return name.replace("/", "-")
def get_current_revision():
revision = subprocess.check_output(
["git", "rev-parse", "--abbrev-ref", "HEAD"], encoding="utf-8"
).strip()
if revision == "HEAD":
# This is a detached HEAD, get the commit hash
revision = (
subprocess.check_output(["git", "rev-parse", "HEAD"])
.strip()
.decode("utf-8")
)
return revision
@contextlib.contextmanager
def checkout_git_revision(revision):
current_revision = get_current_revision()
subprocess.check_call(["git", "checkout", "-q", revision])
try:
yield
finally:
subprocess.check_call(["git", "checkout", "-q", current_revision])
def build_install(revision):
build_dir = "_build"
dest_dir = os.path.abspath(sanitize_path(revision))
print(
format_title(f"# Building and installing {revision} in {dest_dir}"),
end="\n\n",
flush=True,
)
with checkout_git_revision(revision):
rm_rf(build_dir)
rm_rf(revision)
subprocess.check_call(
[
"meson",
build_dir,
"--prefix=/usr",
"--libdir=lib",
"-Db_coverage=false",
"-Dgtkdoc=false",
"-Dtests=false",
]
)
subprocess.check_call(["ninja", "-v", "-C", build_dir])
subprocess.check_call(
["ninja", "-v", "-C", build_dir, "install"], env={"DESTDIR": dest_dir}
)
return dest_dir
def compare(old_tree, new_tree):
print(format_title(f"# Comparing the two ABIs"), end="\n\n", flush=True)
old_headers = os.path.join(old_tree, "usr", "include")
old_lib = os.path.join(old_tree, "usr", "lib", "libxmlb.so")
new_headers = os.path.join(new_tree, "usr", "include")
new_lib = os.path.join(new_tree, "usr", "lib", "libxmlb.so")
subprocess.check_call(
[
"abidiff",
"--headers-dir1",
old_headers,
"--headers-dir2",
new_headers,
"--drop-private-types",
"--suppressions",
"contrib/ci/abidiff.suppr",
"--fail-no-debug-info",
"--no-added-syms",
old_lib,
new_lib,
]
)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("old", help="the previous revision, considered the reference")
parser.add_argument("new", help="the new revision, to compare to the reference")
args = parser.parse_args()
if args.old == args.new:
print("Let's not waste time comparing something to itself")
sys.exit(0)
old_tree = build_install(args.old)
new_tree = build_install(args.new)
try:
compare(old_tree, new_tree)
except Exception:
sys.exit(1)
print(f"Hurray! {args.old} and {args.new} are ABI-compatible!")
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