1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "androidfw/ResourceUtils.h" 18 19 namespace android { 20 21 bool ExtractResourceName(const StringPiece& str, StringPiece* out_package, StringPiece* out_type, 22 StringPiece* out_entry) { 23 *out_package = ""; 24 *out_type = ""; 25 bool has_package_separator = false; 26 bool has_type_separator = false; 27 const char* start = str.data(); 28 const char* end = start + str.size(); 29 if (start[0] == '@') { 30 start++; 31 } 32 const char* current = start; 33 while (current != end) { 34 if (out_type->size() == 0 && *current == '/') { 35 has_type_separator = true; 36 out_type->assign(start, current - start); 37 start = current + 1; 38 } else if (out_package->size() == 0 && *current == ':') { 39 has_package_separator = true; 40 out_package->assign(start, current - start); 41 start = current + 1; 42 } 43 current++; 44 } 45 out_entry->assign(start, end - start); 46 47 return !(has_package_separator && out_package->empty()) && 48 !(has_type_separator && out_type->empty()); 49 } 50 51 bool ToResourceName(const StringPoolRef& type_string_ref, 52 const StringPoolRef& entry_string_ref, 53 const StringPiece& package_name, 54 AssetManager2::ResourceName* out_name) { 55 out_name->package = package_name.data(); 56 out_name->package_len = package_name.size(); 57 58 out_name->type = type_string_ref.string8(&out_name->type_len); 59 out_name->type16 = nullptr; 60 if (out_name->type == nullptr) { 61 out_name->type16 = type_string_ref.string16(&out_name->type_len); 62 if (out_name->type16 == nullptr) { 63 return false; 64 } 65 } 66 67 out_name->entry = entry_string_ref.string8(&out_name->entry_len); 68 out_name->entry16 = nullptr; 69 if (out_name->entry == nullptr) { 70 out_name->entry16 = entry_string_ref.string16(&out_name->entry_len); 71 if (out_name->entry16 == nullptr) { 72 return false; 73 } 74 } 75 76 return true; 77 } 78 79 std::string ToFormattedResourceString(AssetManager2::ResourceName* resource_name) { 80 std::string result; 81 if (resource_name->package != nullptr) { 82 result.append(resource_name->package, resource_name->package_len); 83 } 84 85 if (resource_name->type != nullptr || resource_name->type16 != nullptr) { 86 if (!result.empty()) { 87 result += ":"; 88 } 89 90 if (resource_name->type != nullptr) { 91 result.append(resource_name->type, resource_name->type_len); 92 } else { 93 result += util::Utf16ToUtf8(StringPiece16(resource_name->type16, resource_name->type_len)); 94 } 95 } 96 97 if (resource_name->entry != nullptr || resource_name->entry16 != nullptr) { 98 if (!result.empty()) { 99 result += "/"; 100 } 101 102 if (resource_name->entry != nullptr) { 103 result.append(resource_name->entry, resource_name->entry_len); 104 } else { 105 result += util::Utf16ToUtf8(StringPiece16(resource_name->entry16, resource_name->entry_len)); 106 } 107 } 108 109 return result; 110 } 111 112 } // namespace android 113
