Reuse the git helper for `meson wrap` and `meson subprojects` so we
don't need to maintain the same git-colors-on-windows workarounds in
multiple places.
The 'output' field of the subprocess.CalledProcessError exception is
valid only when subprocess.check_output() is called, trying to access it
after calling subprocess.check_call() results in an unwanted exception
when commands return non-zero exit code, e.g.:
-----------------------------------------------------------------------
$ meson subprojects foreach false
Executing command in ./subprojects/sqlite-amalgamation-3250100
-> Not downloaded yet
Executing command in ./subprojects/gstreamer
Traceback (most recent call last):
File "/home/ao2/meson/meson/mesonbuild/msubprojects.py", line 177, in foreach
subprocess.check_call([options.command] + options.args, cwd=repo_dir)
File "/usr/lib/python3.7/subprocess.py", line 363, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['false']' returned non-zero exit status 1.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/ao2/meson/meson/mesonbuild/mesonmain.py", line 129, in run
return options.run_func(options)
File "/home/ao2/meson/meson/mesonbuild/msubprojects.py", line 248, in run
options.subprojects_func(wrap, repo_dir, options)
File "/home/ao2/meson/meson/mesonbuild/msubprojects.py", line 180, in foreach
out = e.output.decode().strip()
AttributeError: 'NoneType' object has no attribute 'decode'
-----------------------------------------------------------------------
Use subprocess.check_output() instead and behave more like git commands
in handling stderr.
This makes it possible to actually run commands on all subprojects
allowing them to fail on some subprojects and succeed on others.
Also catch the case of missing commands and print an error message in
this case as well.
Sometimes it is convenient to run an arbitrary command (e.g. 'git diff')
on all subprojects.
Add a 'meson subprojects foreach' command to take care of that.
For this command the common argument 'subprojects' does not make sense,
so only add '--sourcedir' and cover the case of a missing
options.subprojects in run().
* If clone-recursive is specified, populate submodules only after
the specified revision/branch has been checked out. Fixes#4996
* Update submodules recursively on `meson subprojects update`
Xavier Claessens