1 // Copyright 2015 Google Inc. All rights reserved 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // +build ignore 16 17 #include "stringprintf.h" 18 19 #include <assert.h> 20 #include <stdarg.h> 21 22 string StringPrintf(const char* format, ...) { 23 string str; 24 str.resize(128); 25 for (int i = 0; i < 2; i++) { 26 va_list args; 27 va_start(args, format); 28 int ret = vsnprintf(&str[0], str.size(), format, args); 29 va_end(args); 30 assert(ret >= 0); 31 if (static_cast<size_t>(ret) < str.size()) { 32 str.resize(ret); 33 return str; 34 } 35 str.resize(ret + 1); 36 } 37 assert(false); 38 __builtin_unreachable(); 39 } 40
