1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2012 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 // from google3/base/stringprintf.h 32 // 33 // Printf variants that place their output in a C++ string. 34 // 35 // Usage: 36 // string result = StringPrintf("%d %s\n", 10, "hello"); 37 // SStringPrintf(&result, "%d %s\n", 10, "hello"); 38 // StringAppendF(&result, "%d %s\n", 20, "there"); 39 40 #ifndef GOOGLE_PROTOBUF_STUBS_STRINGPRINTF_H 41 #define GOOGLE_PROTOBUF_STUBS_STRINGPRINTF_H 42 43 #include <stdarg.h> 44 #include <string> 45 #include <vector> 46 47 #include <google/protobuf/stubs/common.h> 48 49 namespace google { 50 namespace protobuf { 51 52 // Return a C++ string 53 LIBPROTOBUF_EXPORT extern string StringPrintf(const char* format, ...); 54 55 // Store result into a supplied string and return it 56 LIBPROTOBUF_EXPORT extern const string& SStringPrintf(string* dst, const char* format, ...); 57 58 // Append result to a supplied string 59 LIBPROTOBUF_EXPORT extern void StringAppendF(string* dst, const char* format, ...); 60 61 // Lower-level routine that takes a va_list and appends to a specified 62 // string. All other routines are just convenience wrappers around it. 63 LIBPROTOBUF_EXPORT extern void StringAppendV(string* dst, const char* format, va_list ap); 64 65 // The max arguments supported by StringPrintfVector 66 LIBPROTOBUF_EXPORT extern const int kStringPrintfVectorMaxArgs; 67 68 // You can use this version when all your arguments are strings, but 69 // you don't know how many arguments you'll have at compile time. 70 // StringPrintfVector will LOG(FATAL) if v.size() > kStringPrintfVectorMaxArgs 71 LIBPROTOBUF_EXPORT extern string StringPrintfVector(const char* format, const vector<string>& v); 72 73 } // namespace protobuf 74 } // namespace google 75 76 #endif // GOOGLE_PROTOBUF_STUBS_STRINGPRINTF_H 77
