1 /* 2 * Copyright (C) 2005 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 "Utils.h" 18 19 #include <utils/Compat.h> 20 21 // Separator used by resource paths. This is not platform dependent contrary 22 // to OS_PATH_SEPARATOR. 23 #define RES_PATH_SEPARATOR '/' 24 25 using android::String8; 26 convertToResPath(String8 & s)27void convertToResPath([[maybe_unused]] String8& s) { 28 #if OS_PATH_SEPARATOR != RES_PATH_SEPARATOR 29 size_t len = s.length(); 30 if (len > 0) { 31 char* buf = s.lockBuffer(len); 32 for (char* end = buf + len; buf < end; ++buf) { 33 if (*buf == OS_PATH_SEPARATOR) *buf = RES_PATH_SEPARATOR; 34 } 35 s.unlockBuffer(len); 36 } 37 #endif 38 } 39 walkPath(const String8 & path,String8 * outRemains)40String8 walkPath(const String8& path, String8* outRemains) { 41 const char* cp; 42 const char* const str = path.c_str(); 43 const char* buf = str; 44 45 cp = strchr(buf, OS_PATH_SEPARATOR); 46 if (cp == buf) { 47 // don't include a leading '/'. 48 buf = buf + 1; 49 cp = strchr(buf, OS_PATH_SEPARATOR); 50 } 51 52 if (cp == nullptr) { 53 String8 res = buf != str ? String8(buf) : path; 54 if (outRemains) *outRemains = String8(); 55 return res; 56 } 57 58 String8 res(buf, cp - buf); 59 if (outRemains) *outRemains = String8(cp + 1); 60 return res; 61 } 62