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#!/usr/bin/python3
"""Build a trivial program using the drpm library."""
from __future__ import annotations
import argparse
import dataclasses
import os
import pathlib
import shlex
import subprocess # noqa: S404
import sys
import tempfile
EXPECTED = [
"make standard",
"read standard",
"standard",
"make options",
"make rpm-only",
"read rpm-only",
"rpm-only",
"fine",
]
@dataclasses.dataclass(frozen=True)
class Config:
"""Runtime configuration."""
source: pathlib.Path
testdir: pathlib.Path
env: dict[str, str]
tempd: pathlib.Path
obj: pathlib.Path
program: pathlib.Path
def do_compile(cfg: Config) -> None:
"""Compile the test program."""
print("Fetching the C compiler flags for drpm")
cflags = subprocess.check_output( # noqa: S603
["pkg-config", "--cflags", "drpm"], # noqa: S607
encoding="UTF-8",
shell=False,
env=cfg.env,
).rstrip("\r\n")
if "\r" in cflags or "\n" in cflags:
sys.exit(f"`pkg-config --cflags drpm` returned {cflags!r}")
if cfg.obj.exists():
sys.exit(f"Did not expect {cfg.obj} to exist")
cmd = [
"cc",
"-c",
"-o",
str(cfg.obj),
"-Wall",
"-W",
"-Wextra",
"-Werror",
*shlex.split(cflags),
str(cfg.source),
]
print(f"Running {cmd!r}")
subprocess.check_call(cmd, shell=False, env=cfg.env) # noqa: S603
if not cfg.obj.is_file():
sys.exit(f"{cmd!r} did not create the {cfg.obj} file")
print("Fetching the C linker flags and libraries for drpm")
libs = subprocess.check_output( # noqa: S603
["pkg-config", "--libs", "drpm"], # noqa: S607
encoding="UTF-8",
shell=False,
env=cfg.env,
).rstrip("\r\n")
if "\r" in libs or "\n" in libs:
sys.exit(f"`pkg-config --libs drpm` returned {libs!r}")
if cfg.program.exists():
sys.exit(f"Did not expect {cfg.program} to exist")
cmd = ["cc", "-o", str(cfg.program), str(cfg.obj), *shlex.split(libs)]
print(f"Running {cmd!r}")
subprocess.check_call(cmd, shell=False, env=cfg.env) # noqa: S603
if not cfg.program.is_file():
sys.exit(f"{cmd!r} did not create the {cfg.program} file")
if not os.access(cfg.program, os.X_OK):
sys.exit(f"Not an executable file: {cfg.program}")
print(f"Looks like we got {cfg.program}")
def parse_args(dirname: str) -> Config:
"""Parse the command-line options."""
parser = argparse.ArgumentParser(prog="compile")
parser.add_argument(
"-s",
"--source",
type=str,
required=True,
help="path to the source file to compile",
)
parser.add_argument(
"-t",
"--testdir",
type=str,
required=True,
help="path to the directory containing the test RPM packages",
)
args = parser.parse_args()
env = dict(os.environ)
env["LC_ALL"] = "C.UTF-8"
env["LANGUAGES"] = ""
source = pathlib.Path(args.source).absolute()
if source.suffixes != [".c"]:
sys.exit("The source file should only have a *.c extension.")
progname = source.with_suffix("").name
tempd = pathlib.Path(dirname).absolute()
program = tempd / progname
return Config(
source=pathlib.Path(args.source),
testdir=pathlib.Path(args.testdir),
env=env,
tempd=tempd,
obj=program.with_suffix(".o"),
program=program,
)
def do_run(cfg: Config) -> None:
"""Run the compiled program, examine the result."""
command = [
cfg.program,
cfg.testdir / "cmocka-old.rpm",
cfg.testdir / "cmocka-new.rpm",
cfg.tempd,
]
print(f"Running {command!r}")
lines = subprocess.check_output( # noqa: S603
command,
encoding="UTF-8",
shell=False,
env=cfg.env,
).splitlines()
print(f"Got {lines!r}")
if lines != EXPECTED:
sys.exit(f"The test program output {lines!r} instead of {EXPECTED!r}")
def main() -> None:
"""Parse command-line options, compile a program, run it."""
with tempfile.TemporaryDirectory() as dirname:
cfg = parse_args(dirname)
do_compile(cfg)
do_run(cfg)
print("Seems fine!")
if __name__ == "__main__":
main()
|
