1fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// Protocol Buffers - Google's data interchange format 2fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// Copyright 2008 Google Inc. All rights reserved. 3fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// http://code.google.com/p/protobuf/ 4fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// 5fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// Redistribution and use in source and binary forms, with or without 6fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// modification, are permitted provided that the following conditions are 7fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// met: 8fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// 9fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// * Redistributions of source code must retain the above copyright 10fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// notice, this list of conditions and the following disclaimer. 11fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// * Redistributions in binary form must reproduce the above 12fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// copyright notice, this list of conditions and the following disclaimer 13fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// in the documentation and/or other materials provided with the 14fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// distribution. 15fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// * Neither the name of Google Inc. nor the names of its 16fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// contributors may be used to endorse or promote products derived from 17fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// this software without specific prior written permission. 18fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// 19fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 31fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// Author: kenton@google.com (Kenton Varda) 32fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 33fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville#include <google/protobuf/stubs/substitute.h> 34fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville#include <google/protobuf/stubs/strutil.h> 35fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville#include <google/protobuf/stubs/stl_util-inl.h> 36fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 37fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillenamespace google { 38fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillenamespace protobuf { 39fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillenamespace strings { 40fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 41fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savilleusing internal::SubstituteArg; 42fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 43fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// Returns the number of args in arg_array which were passed explicitly 44fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville// to Substitute(). 45fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillestatic int CountSubstituteArgs(const SubstituteArg* const* args_array) { 46fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville int count = 0; 47fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville while (args_array[count] != NULL && args_array[count]->size() != -1) { 48fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++count; 49fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 50fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville return count; 51fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} 52fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 53fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillestring Substitute( 54fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const char* format, 55fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg0, const SubstituteArg& arg1, 56fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg2, const SubstituteArg& arg3, 57fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg4, const SubstituteArg& arg5, 58fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg6, const SubstituteArg& arg7, 59fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg8, const SubstituteArg& arg9) { 60fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville string result; 61fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville SubstituteAndAppend(&result, format, arg0, arg1, arg2, arg3, arg4, 62fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville arg5, arg6, arg7, arg8, arg9); 63fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville return result; 64fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} 65fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 66fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Savillevoid SubstituteAndAppend( 67fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville string* output, const char* format, 68fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg0, const SubstituteArg& arg1, 69fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg2, const SubstituteArg& arg3, 70fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg4, const SubstituteArg& arg5, 71fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg6, const SubstituteArg& arg7, 72fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg& arg8, const SubstituteArg& arg9) { 73fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg* const args_array[] = { 74fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville &arg0, &arg1, &arg2, &arg3, &arg4, &arg5, &arg6, &arg7, &arg8, &arg9, NULL 75fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville }; 76fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 77fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville // Determine total size needed. 78fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville int size = 0; 79fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville for (int i = 0; format[i] != '\0'; i++) { 80fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (format[i] == '$') { 81fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (ascii_isdigit(format[i+1])) { 82fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville int index = format[i+1] - '0'; 83fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (args_array[index]->size() == -1) { 84fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville GOOGLE_LOG(DFATAL) 85fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << "strings::Substitute format string invalid: asked for \"$" 86fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << index << "\", but only " << CountSubstituteArgs(args_array) 87fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << " args were given. Full format string was: \"" 88fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << CEscape(format) << "\"."; 89fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville return; 90fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 91fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville size += args_array[index]->size(); 92fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++i; // Skip next char. 93fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } else if (format[i+1] == '$') { 94fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++size; 95fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++i; // Skip next char. 96fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } else { 97fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville GOOGLE_LOG(DFATAL) 98fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << "Invalid strings::Substitute() format string: \"" 99fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville << CEscape(format) << "\"."; 100fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville return; 101fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 102fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } else { 103fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++size; 104fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 105fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 106fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 107fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (size == 0) return; 108fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 109fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville // Build the string. 110fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville int original_size = output->size(); 111fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville STLStringResizeUninitialized(output, original_size + size); 112fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville char* target = string_as_array(output) + original_size; 113fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville for (int i = 0; format[i] != '\0'; i++) { 114fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (format[i] == '$') { 115fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville if (ascii_isdigit(format[i+1])) { 116fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville const SubstituteArg* src = args_array[format[i+1] - '0']; 117fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville memcpy(target, src->data(), src->size()); 118fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville target += src->size(); 119fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++i; // Skip next char. 120fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } else if (format[i+1] == '$') { 121fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville *target++ = '$'; 122fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville ++i; // Skip next char. 123fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 124fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } else { 125fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville *target++ = format[i]; 126fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 127fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville } 128fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 129fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville GOOGLE_DCHECK_EQ(target - output->data(), output->size()); 130fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} 131fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville 132fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} // namespace strings 133fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} // namespace protobuf 134fbaaef999ba563838ebd00874ed8a1c01fbf286dWink Saville} // namespace google 135