blob: 854a3ef09496878918fb731ae0cca8c7b8c18647 [file] [log] [blame]
#!/usr/bin/env python
#
# Copyright 2014 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.
"""
Utilities for the modular DevTools build.
"""
from os import path
import os
try:
import simplejson as json
except ImportError:
import json
def read_file(filename):
with open(path.normpath(filename), 'rt') as input:
return input.read()
def write_file(filename, content):
if path.exists(filename):
os.remove(filename)
with open(filename, 'wt') as output:
output.write(content)
def bail_error(message):
raise Exception(message)
def concatenate_scripts(file_names, module_dir, output_dir, output):
for file_name in file_names:
output.write('/* %s */\n' % file_name)
file_path = path.join(module_dir, file_name)
if not path.isfile(file_path):
file_path = path.join(output_dir, path.basename(module_dir), file_name)
output.write(read_file(file_path))
output.write(';')
class Descriptors:
def __init__(self, application_dir, application_descriptor, module_descriptors, application_json):
self.application_dir = application_dir
self.application = application_descriptor
self.modules = module_descriptors
self.application_json = application_json
def all_compiled_files(self):
files = {}
for name in self.modules:
module = self.modules[name]
skipped_files = set(module.get('skip_compilation', []))
for script in module.get('scripts', []):
if script not in skipped_files:
files[path.normpath(path.join(self.application_dir, name, script))] = True
return files.keys()
def module_compiled_files(self, name):
files = []
module = self.modules[name]
skipped_files = set(module.get('skip_compilation', []))
for script in module.get('scripts', []):
if script not in skipped_files:
files.append(script)
return files
def sorted_modules(self):
result = []
unvisited_modules = set(self.modules)
temp_modules = set()
def visit(parent, name):
if name not in unvisited_modules:
return None
if name not in self.modules:
return (parent, name)
if name in temp_modules:
bail_error('Dependency cycle found at module "%s"' % name)
temp_modules.add(name)
deps = self.modules[name].get('dependencies')
if deps:
for dep_name in deps:
bad_dep = visit(name, dep_name)
if bad_dep:
return bad_dep
unvisited_modules.remove(name)
temp_modules.remove(name)
result.append(name)
return None
while len(unvisited_modules):
for next in unvisited_modules:
break
failure = visit(None, next)
if failure:
# failure[0] can never be None
bail_error('Unknown module "%s" encountered in dependencies of "%s"' % (failure[1], failure[0]))
return result
class DescriptorLoader:
def __init__(self, application_dir):
self.application_dir = application_dir
def load_application(self, application_descriptor_name):
application_descriptor_filename = path.join(self.application_dir, application_descriptor_name)
application_descriptor_json = read_file(application_descriptor_filename)
application_descriptor = {desc['name']: desc for desc in json.loads(application_descriptor_json)}
module_descriptors = {}
for (module_name, module) in application_descriptor.items():
if module_descriptors.get(module_name):
bail_error('Duplicate definition of module "%s" in %s' % (module_name, application_descriptor_filename))
module_json_filename = path.join(self.application_dir, module_name, 'module.json')
module_descriptors[module_name] = self._read_module_descriptor(module_name, application_descriptor_filename)
return Descriptors(self.application_dir, application_descriptor, module_descriptors, application_descriptor_json)
def _read_module_descriptor(self, module_name, application_descriptor_filename):
json_filename = path.join(self.application_dir, module_name, 'module.json')
if not path.exists(json_filename):
bail_error('Module descriptor %s referenced in %s is missing' % (json_filename, application_descriptor_filename))
module_json = json.loads(read_file(json_filename))
module_json['name'] = module_name
return module_json