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#!/usr/bin/env python3
# Copyright (C) 2021 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import re
import lxml.etree as etree
class ResourceLocation:
def __init__(self, file, line=None):
self.file = file
self.line = line
def __str__(self):
if self.line is not None:
return self.file + ':' + str(self.line)
else:
return self.file
class Resource:
def __init__(self, name, type, location=None):
self.name = name
self.type = type
self.locations = []
if location is not None:
self.locations.append(location)
def __eq__(self, other):
if isinstance(other, _Grab):
return other == self
return self.name == other.name and self.type == other.type
def __ne__(self, other):
if isinstance(other, _Grab):
return other != self
return self.name != other.name or self.type != other.type
def __hash__(self):
return hash((self.name, self.type))
def __str__(self):
result = ''
for location in self.locations:
result += str(location) + ': '
result += '<'+self.type+' name="'+self.name+'"'
return result + '>'
def __repr__(self):
return str(self)
def get_all_resources(resDir, excluded_resource_files=[]):
excluded_resource_files = [os.path.abspath(file) for file in excluded_resource_files]
allResDirs = [f for f in os.listdir(resDir) if os.path.isdir(os.path.join(resDir, f))]
valuesDirs = [f for f in allResDirs if f.startswith('values')]
fileDirs = [f for f in allResDirs if not f.startswith('values')]
resources = set()
# Get the filenames of the all the files in all the fileDirs
for dir in fileDirs:
type = dir.split('-')[0]
for file in os.listdir(os.path.join(resDir, dir)):
filePath = os.path.abspath(os.path.join(resDir, dir, file))
if file.endswith('.xml') and filePath not in excluded_resource_files:
add_resource_to_set(resources,
Resource(file[:-4], type,
ResourceLocation(os.path.join(resDir, dir, file))))
if dir.startswith("layout"):
for resource in get_ids_from_layout_file(os.path.join(resDir, dir, file)):
add_resource_to_set(resources, resource)
for dir in valuesDirs:
for file in os.listdir(os.path.join(resDir, dir)):
filePath = os.path.abspath(os.path.join(resDir, dir, file))
if file.endswith('.xml') and filePath not in excluded_resource_files:
for resource in get_resources_from_single_file(os.path.join(resDir, dir, file),
dir != "values"):
add_resource_to_set(resources, resource)
return resources
def get_ids_from_layout_file(filename):
result = set()
with open(filename, 'r') as file:
r = re.compile("@\+id/([a-zA-Z0-9_]+)")
for i in r.findall(file.read()):
add_resource_to_set(result, Resource(i, 'id', ResourceLocation(filename)))
return result
def get_resources_from_single_file(filename, ignore_strings=False):
doc = etree.parse(filename)
root = doc.getroot()
result = set()
for resource in root:
if resource.tag is etree.Comment:
continue
if resource.tag == 'declare-styleable':
for attr in resource:
resName = attr.get('name')
# Skip resources beginning with 'android:' as they are part of the framework
# resources. This script finds only the app's resources.
if resName is None or resName.startswith('android:'):
continue
resType = "attr"
add_resource_to_set(result, Resource(resName, resType, ResourceLocation(filename, attr.sourceline)))
continue
resName = resource.get('name')
resType = resource.tag
if resType == "string-array" or resType == "integer-array":
resType = "array"
if resource.tag == 'item' or resource.tag == 'public':
resType = resource.get('type')
if (resType == 'string' or resType == 'plurals') and ignore_strings:
continue
if resType == 'overlayable':
for policy in resource:
for overlayable in policy:
resName = overlayable.get('name')
resType = overlayable.get('type')
add_resource_to_set(result, Resource(resName, resType,
ResourceLocation(filename, resource.sourceline)))
else:
add_resource_to_set(result, Resource(resName, resType,
ResourceLocation(filename, resource.sourceline)))
return result
# Used to get objects out of sets
class _Grab:
def __init__(self, value):
self.search_value = value
def __hash__(self):
return hash(self.search_value)
def __eq__(self, other):
if self.search_value == other:
self.actual_value = other
return True
return False
def add_resource_to_set(resourceset, resource):
if (resource.name == None):
return
grabber = _Grab(resource)
if grabber in resourceset:
grabber.actual_value.locations.extend(resource.locations)
else:
resourceset.update([resource])
def merge_resources(set1, set2):
for resource in set2:
add_resource_to_set(set1, resource)
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