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refactor(make): backticks: return output directly ()

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The previous fix allowed us to return values directly from
implementations of Engine. Here we take advantage of this
possibility by immediately refactoring how backticks work.

Part of https://github.com/ooni/probe/issues/1466.
This commit is contained in:
Simone Basso 2021-05-05 10:42:39 +02:00 committed by GitHub
parent 80ef3e4b1b
commit 42dd9cb55e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 13 deletions

23
make

@ -258,9 +258,9 @@ class Engine(Protocol):
self, self,
output_variable: str, output_variable: str,
cmdline: List[str], cmdline: List[str],
output: List[bytes], ) -> bytes:
) -> None: """backticks executes output_variable=`*cmdline` and returns
"""backticks executes output_variable=`*cmdline`.""" the output emitted by the command to the caller."""
def cat_sed_redirect( def cat_sed_redirect(
self, patterns: List[Tuple[str, str]], source: str, dest: str self, patterns: List[Tuple[str, str]], source: str, dest: str
@ -300,12 +300,12 @@ class CommandExecutor:
self, self,
output_variable: str, output_variable: str,
cmdline: List[str], cmdline: List[str],
output: List[bytes], ) -> bytes:
) -> None:
"""backticks implements Engine.backticks""" """backticks implements Engine.backticks"""
self._dry_runner.backticks(output_variable, cmdline, output) out = self._dry_runner.backticks(output_variable, cmdline)
# Nothing else to do, because backticks is fully # Nothing else to do, because backticks is fully
# implemented by CommandDryRunner. # implemented by CommandDryRunner.
return out
def cat_sed_redirect( def cat_sed_redirect(
self, patterns: List[Tuple[str, str]], source: str, dest: str self, patterns: List[Tuple[str, str]], source: str, dest: str
@ -371,8 +371,7 @@ class CommandDryRunner:
self, self,
output_variable: str, output_variable: str,
cmdline: List[str], cmdline: List[str],
output: List[bytes], ) -> bytes:
) -> None:
"""backticks implements Engine.backticks""" """backticks implements Engine.backticks"""
log("./make: {}=`{}`".format(output_variable, shlex.join(cmdline))) log("./make: {}=`{}`".format(output_variable, shlex.join(cmdline)))
# implemented here because we want to see the result of backticks # implemented here because we want to see the result of backticks
@ -381,7 +380,7 @@ class CommandDryRunner:
stdout = popen.communicate()[0] stdout = popen.communicate()[0]
if popen.returncode != 0: if popen.returncode != 0:
raise RuntimeError(popen.returncode) raise RuntimeError(popen.returncode)
output.append(stdout) return stdout
def cat_sed_redirect( def cat_sed_redirect(
self, patterns: List[Tuple[str, str]], source: str, dest: str self, patterns: List[Tuple[str, str]], source: str, dest: str
@ -437,7 +436,6 @@ class CommandDryRunner:
log("./make: unset {}".format(key)) log("./make: unset {}".format(key))
def new_engine(options: Options) -> Engine: def new_engine(options: Options) -> Engine:
"""new_engine creates a new engine instance""" """new_engine creates a new engine instance"""
out: Engine = CommandDryRunner() out: Engine = CommandDryRunner()
@ -1008,9 +1006,8 @@ class OONIMKAllPodspec:
if os.path.isfile(self.__name) and not options.dry_run(): if os.path.isfile(self.__name) and not options.dry_run():
log("./make: {}: already built".format(self.__name)) log("./make: {}: already built".format(self.__name))
return return
output: List[bytes] = [] output = engine.backticks("RELEASE", ["git", "describe", "--tags"])
engine.backticks("RELEASE", ["git", "describe", "--tags"], output) release = output.decode("utf-8").strip()
release = output[0].decode("utf-8").strip()
version = datetime.datetime.now().strftime("%Y.%m.%d-%H%M%S") version = datetime.datetime.now().strftime("%Y.%m.%d-%H%M%S")
engine.cat_sed_redirect( engine.cat_sed_redirect(
[("@VERSION@", version), ("@RELEASE@", release)], [("@VERSION@", version), ("@RELEASE@", release)],