hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROIDFW_RESOURCEUTILS_H
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#define ANDROIDFW_RESOURCEUTILS_H
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#include "androidfw/AssetManager2.h"
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#include "androidfw/StringPiece.h"
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namespace android {
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// Extracts the package, type, and name from a string of the format: [[package:]type/]name
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// Validation must be performed on each extracted piece.
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// Returns false if there was a syntax error.
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bool ExtractResourceName(StringPiece str, StringPiece* out_package, StringPiece* out_type,
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StringPiece* out_entry);
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// Convert a type_string_ref, entry_string_ref, and package to AssetManager2::ResourceName.
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// Useful for getting resource name without re-running AssetManager2::FindEntry searches.
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base::expected<AssetManager2::ResourceName, NullOrIOError> ToResourceName(
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const StringPoolRef& type_string_ref, const StringPoolRef& entry_string_ref,
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StringPiece package_name);
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// Formats a ResourceName to "package:type/entry_name".
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std::string ToFormattedResourceString(const AssetManager2::ResourceName& resource_name);
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inline uint32_t fix_package_id(uint32_t resid, uint8_t package_id) {
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return (resid & 0x00ffffffu) | (static_cast<uint32_t>(package_id) << 24);
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}
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inline uint8_t get_package_id(uint32_t resid) {
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return static_cast<uint8_t>((resid >> 24) & 0x000000ffu);
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}
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// The type ID is 1-based, so if the returned value is 0 it is invalid.
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inline uint8_t get_type_id(uint32_t resid) {
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return static_cast<uint8_t>((resid >> 16) & 0x000000ffu);
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}
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inline uint16_t get_entry_id(uint32_t resid) {
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return static_cast<uint16_t>(resid & 0x0000ffffu);
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}
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inline bool is_internal_resid(uint32_t resid) {
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return (resid & 0xffff0000u) != 0 && (resid & 0x00ff0000u) == 0;
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}
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inline bool is_valid_resid(uint32_t resid) {
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return (resid & 0x00ff0000u) != 0 && (resid & 0xff000000u) != 0;
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}
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inline uint32_t make_resid(uint8_t package_id, uint8_t type_id, uint16_t entry_id) {
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return (static_cast<uint32_t>(package_id) << 24) | (static_cast<uint32_t>(type_id) << 16) |
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entry_id;
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}
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} // namespace android
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#endif /* ANDROIDFW_RESOURCEUTILS_H */
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