| #!/usr/bin/env python |
| # Copyright 2018 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| ### Generates symlinks to Rust Cargo.toml output files |
| |
| import argparse |
| import os |
| import sys |
| |
| ROOT_PATH = os.path.abspath(__file__ + "/../../..") |
| CONFIG_PATH = os.path.join(ROOT_PATH, ".config") |
| |
| def main(): |
| parser = argparse.ArgumentParser( |
| "Generate symlinks to Rust Cargo.toml output files") |
| parser.add_argument("gn_target", |
| nargs=1, |
| help="GN target to generate a symlink for. \ |
| Use the absolute path to the target \ |
| (relative to $FUCHSIA_DIR). \ |
| For example: //garnet/bin/foo/bar:baz") |
| parser.add_argument("--output", |
| help="Path to Cargo.toml to generate", |
| required=False) |
| parser.add_argument("--out-dir", |
| help="Path to the Fuchsia output directory", |
| required=False) |
| args = parser.parse_args() |
| |
| if args.out_dir: |
| out_dir = args.out_dir |
| else: |
| out_dir = "" |
| with open(CONFIG_PATH, "r") as config: |
| for line in config.readlines(): |
| if line.startswith("FUCHSIA_BUILD_DIR="): |
| segments = line.split("=") |
| assert(len(segments) == 2) |
| out_dir = segments[1].strip().strip("'") |
| if out_dir == "": |
| print "Invalid fuchsia/.config: no FUCHSIA_BUILD_DIR entry found" |
| |
| gn_target = args.gn_target[0] |
| gn_target = gn_target.lstrip("/") |
| |
| gn_target_parts = gn_target.split(":", 1) |
| if len(gn_target_parts) == 1: |
| # Turn foo/bar into foo/bar/bar |
| path = os.path.join(gn_target, os.path.basename(gn_target)) |
| elif len(gn_target_parts) == 2: |
| # Turn foo/bar:baz into foo/bar/baz |
| path = gn_target.replace(":", os.sep) |
| else: |
| print "Invalid gn_target: explected at most one colon." |
| return 1 |
| |
| path = os.path.join(ROOT_PATH, out_dir, "gen", path, "Cargo.toml") |
| |
| if args.output: |
| output = args.output |
| else: |
| output = os.path.join(ROOT_PATH, gn_target_parts[0], "Cargo.toml") |
| |
| if os.path.exists(path): |
| try: |
| os.remove(output) |
| except OSError: |
| pass |
| print "Creating '{}' pointing to '{}'".format(output, path) |
| os.symlink(path, output) |
| else: |
| print "Internal error: path '{}' does not point to a Cargo.toml file".format(path) |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
| |