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#!/usr/bin/env python3
# Copyright 2013 The Servo Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.
import json
import os
import subprocess
import sys
def main(crate=None):
os.chdir(os.path.join(os.path.dirname(__file__), ".."))
meta = json.loads(subprocess.check_output(["cargo", "metadata", "--format-version", "1"]))
graph = {}
for package in meta["packages"]:
if package["source"] is None: # Lives in this repo
for dependency in package["dependencies"]:
if dependency["source"] is None: # Also lives in this repo
graph.setdefault(package["name"], []).append(dependency["name"])
if crate:
filtered = {}
seen = set()
def traverse(name):
if name not in seen:
seen.add(name)
for dependency in graph.get(name, []):
filtered.setdefault(name, []).append(dependency)
traverse(dependency)
traverse(crate)
else:
filtered = graph
print("// This is in Graphviz DOT format.")
print("// Use the 'dot' or 'xdot' tool to visualize.")
print('digraph "local crates" {')
for package, dependencies in filtered.items():
for dependency in dependencies:
print(' "%s" -> "%s";' % (package, dependency))
print("}")
if __name__ == "__main__":
sys.exit(main(*sys.argv[1:]))
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