Index: build/clobber.py |
diff --git a/build/clobber.py b/build/clobber.py |
deleted file mode 100755 |
index 785011a171d836f9cbf8dc0ddd101a015b3335de..0000000000000000000000000000000000000000 |
--- a/build/clobber.py |
+++ /dev/null |
@@ -1,110 +0,0 @@ |
-#!/usr/bin/env python |
-# Copyright 2015 The Chromium Authors. All rights reserved. |
-# Use of this source code is governed by a BSD-style license that can be |
-# found in the LICENSE file. |
- |
-"""This script provides methods for clobbering build directories.""" |
- |
-import argparse |
-import os |
-import shutil |
-import sys |
- |
- |
-def extract_gn_build_commands(build_ninja_file): |
- """Extracts from a build.ninja the commands to run GN. |
- |
- The commands to run GN are the gn rule and build.ninja build step at the |
- top of the build.ninja file. We want to keep these when deleting GN builds |
- since we want to preserve the command-line flags to GN. |
- |
- On error, returns the empty string.""" |
- result = "" |
- with open(build_ninja_file, 'r') as f: |
- # Read until the second blank line. The first thing GN writes to the file |
- # is the "rule gn" and the second is the section for "build build.ninja", |
- # separated by blank lines. |
- num_blank_lines = 0 |
- while num_blank_lines < 2: |
- line = f.readline() |
- if len(line) == 0: |
- return '' # Unexpected EOF. |
- result += line |
- if line[0] == '\n': |
- num_blank_lines = num_blank_lines + 1 |
- return result |
- |
- |
-def delete_build_dir(build_dir): |
- # GN writes a build.ninja.d file. Note that not all GN builds have args.gn. |
- build_ninja_d_file = os.path.join(build_dir, 'build.ninja.d') |
- if not os.path.exists(build_ninja_d_file): |
- shutil.rmtree(build_dir) |
- return |
- |
- # GN builds aren't automatically regenerated when you sync. To avoid |
- # messing with the GN workflow, erase everything but the args file, and |
- # write a dummy build.ninja file that will automatically rerun GN the next |
- # time Ninja is run. |
- build_ninja_file = os.path.join(build_dir, 'build.ninja') |
- build_commands = extract_gn_build_commands(build_ninja_file) |
- |
- try: |
- gn_args_file = os.path.join(build_dir, 'args.gn') |
- with open(gn_args_file, 'r') as f: |
- args_contents = f.read() |
- except IOError: |
- args_contents = '' |
- |
- shutil.rmtree(build_dir) |
- |
- # Put back the args file (if any). |
- os.mkdir(build_dir) |
- if args_contents != '': |
- with open(gn_args_file, 'w') as f: |
- f.write(args_contents) |
- |
- # Write the build.ninja file sufficiently to regenerate itself. |
- with open(os.path.join(build_dir, 'build.ninja'), 'w') as f: |
- if build_commands != '': |
- f.write(build_commands) |
- else: |
- # Couldn't parse the build.ninja file, write a default thing. |
- f.write('''rule gn |
-command = gn -q gen //out/%s/ |
-description = Regenerating ninja files |
- |
-build build.ninja: gn |
-generator = 1 |
-depfile = build.ninja.d |
-''' % (os.path.split(build_dir)[1])) |
- |
- # Write a .d file for the build which references a nonexistant file. This |
- # will make Ninja always mark the build as dirty. |
- with open(build_ninja_d_file, 'w') as f: |
- f.write('build.ninja: nonexistant_file.gn\n') |
- |
- |
-def clobber(out_dir): |
- """Clobber contents of build directory. |
- |
- Don't delete the directory itself: some checkouts have the build directory |
- mounted.""" |
- for f in os.listdir(out_dir): |
- path = os.path.join(out_dir, f) |
- if os.path.isfile(path): |
- os.unlink(path) |
- elif os.path.isdir(path): |
- delete_build_dir(path) |
- |
- |
-def main(): |
- parser = argparse.ArgumentParser() |
- parser.add_argument('out_dir', help='The output directory to clobber') |
- args = parser.parse_args() |
- clobber(args.out_dir) |
- return 0 |
- |
- |
-if __name__ == '__main__': |
- sys.exit(main()) |