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allow creating Metadata from file or json

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Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>
This commit is contained in:
Igor Gnatenko 2017-02-03 10:38:49 +01:00
parent c946648932
commit 7399ebee0e
1 changed files with 44 additions and 35 deletions
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79
cargodeps.py
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@ -30,9 +30,9 @@ class Dependency(object):
return "crate({}{}) {} {}".format(self.name, f_part, kind.replace("==", "="), self.spec.spec)
class Metadata(object):
def __init__(self, path):
def __init__(self):
self.name = None
self.version = None
self._version = None
self._provides = []
self._requires = []
self._conflicts = []
@ -41,10 +41,47 @@ class Metadata(object):
self._test_requires = []
self._test_conflicts = []
@classmethod
def from_json(cls, metadata):
self = cls()
md = metadata["packages"][0]
self.name = md["name"]
self._version = semver.SpecItem("={}".format(md["version"]))
# Provides
self._provides = [Dependency(self.name, self._version)]
for feature in md["features"]:
self._provides.append(Dependency(self.name, self._version, feature=feature))
# Dependencies
for dep in md["dependencies"]:
if dep["kind"] is None:
requires = self._requires
conflicts = self._conflicts
elif dep["kind"] == "build":
requires = self._build_requires
conflicts = self._build_conflicts
elif dep["kind"] == "dev":
requires = self._test_requires
conflicts = self._test_conflicts
else:
raise ValueError("Unknown kind: {!r}, please report bug.".format(dep["kind"]))
req, con = self._parse_req(dep["req"])
assert req is not None
for feature in dep["features"] or [None]:
requires.append(Dependency(dep["name"], req, feature=feature))
if con is not None:
conflicts.append(Dependency(dep["name"], con, feature=feature, inverted=True))
return self
@classmethod
def from_file(cls, path):
# --no-deps is to disable recursive scanning of deps
metadata = subprocess.check_output(["cargo", "metadata", "--no-deps",
"--manifest-path={}".format(path)])
self._parse_metadata(json.loads(metadata))
return cls.from_json(json.loads(metadata))
@staticmethod
def _parse_req(s):
@ -87,37 +124,9 @@ class Metadata(object):
"probably something is wrong with metadata")
assert False
def _parse_metadata(self, metadata):
md = metadata["packages"][0]
self.name = md["name"]
self.version = semver.SpecItem("={}".format(md["version"]))
# Provides
self._provides = [Dependency(self.name, self.version)]
for feature in md["features"]:
self._provides.append(Dependency(self.name, self.version, feature=feature))
# Requires, Conflicts
self._requires = []
self._conflicts = []
for dep in md["dependencies"]:
if dep["kind"] is None:
requires = self._requires
conflicts = self._conflicts
elif dep["kind"] == "build":
requires = self._build_requires
conflicts = self._build_conflicts
elif dep["kind"] == "dev":
requires = self._test_requires
conflicts = self._test_conflicts
else:
raise ValueError("Unknown kind: {!r}, please report bug.".format(dep["kind"]))
req, con = self._parse_req(dep["req"])
assert req is not None
for feature in dep["features"] or [None]:
requires.append(Dependency(dep["name"], req, feature=feature))
if con is not None:
conflicts.append(Dependency(dep["name"], con, feature=feature, inverted=True))
@property
def version(self):
return str(self._version.spec) if self._version is not None else None
@property
def provides(self):
@ -168,7 +177,7 @@ if __name__ == "__main__":
for f in files:
f = f.rstrip()
md = Metadata(f)
md = Metadata.from_file(f)
if args.provides:
print_deps(md.provides)
if args.requires: