def cleanup_out():
if file_size(prod_path_out) == 0:
remove_file(prod_path_out)
else:
warnF(target_path, 'wrote data directly to `{}`;\n ignoring output captured in `{}`', prod_path_tmp, prod_path_out)
def build_product(ctx, target_path: str, src_path: str, prod_path: str) -> bool:
'''
Run a source file, producing zero or more products.
Return a list of produced product paths.
'''
src_ext = path_ext(src_path)
try:
build_tool = build_tools[src_ext]
except KeyError:
# TODO: fall back to generic .deps file.
failF(target_path, 'unsupported source file extension: `{}`', src_ext)
prod_path_out = prod_path + out_ext
prod_path_tmp = prod_path + tmp_ext
remove_file_if_exists(prod_path_out)
remove_file_if_exists(prod_path_tmp)
if not build_tool:
noteF(target_path, 'no op.')
return False # no product.
prod_dir = path_dir(prod_path)
make_dirs(prod_dir)
# Extract args from the combination of wilds in the source and the matching target.
m = match_wilds(target_path_for_source(src_path), target_path)
if m is None:
failF(target_path, 'internal error: match failed; src_path: {!r}', src_path)
argv = [src_path] + list(m.groups())
cmd = build_tool + argv
try: env_fn = build_tool_env_fns[src_ext]
except KeyError: env = None
else:
env = os.environ.copy()
custom_env = env_fn()
env.update(custom_env)
noteF(target_path, 'building: `{}`', ' '.join(shlex.quote(w) for w in cmd))
out_file = open(prod_path_out, 'wb')
time_start = time.time()
code = runC(cmd, env=env, out=out_file)
time_elapsed = time.time() - time_start
out_file.close()
if code != 0:
failF(target_path, 'build failed with code: {}', code)
def cleanup_out():
if file_size(prod_path_out) == 0:
remove_file(prod_path_out)
else:
warnF(target_path, 'wrote data directly to `{}`;\n ignoring output captured in `{}`', prod_path_tmp, prod_path_out)
manif_path = manifest_path(argv)
try: f = open(manif_path)
except FileNotFoundError: # no list.
if not path_exists(prod_path_tmp):
via = 'stdout'
tmp_paths = [prod_path_out]
else:
via = 'tmp'
tmp_paths = [prod_path_tmp]
cleanup_out()
else:
via = 'manifest'
tmp_paths = list(line[:-1] for line in f) # strip newlines.
cleanup_out()
if ('%' not in prod_path_tmp) and prod_path_tmp not in tmp_paths:
failF(target_path, 'product does not appear in manifest ({} records): {}',
len(tmp_paths), manif_path)
remove_file(manif_path)
time_msg = '{:0.2f} seconds '.format(time_elapsed) if ctx.report_times else ''
noteF(target_path, 'finished: {}(via {}).', time_msg, via)
return tmp_paths
