10ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Ceres Solver - A fast non-linear least squares minimizer 20ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Copyright 2010, 2011, 2012 Google Inc. All rights reserved. 30ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// http://code.google.com/p/ceres-solver/ 40ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 50ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Redistribution and use in source and binary forms, with or without 60ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// modification, are permitted provided that the following conditions are met: 70ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 80ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions of source code must retain the above copyright notice, 90ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer. 100ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions in binary form must reproduce the above copyright notice, 110ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer in the documentation 120ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// and/or other materials provided with the distribution. 130ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Neither the name of Google Inc. nor the names of its contributors may be 140ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// used to endorse or promote products derived from this software without 150ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// specific prior written permission. 160ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 170ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 180ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 190ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 200ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 210ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 220ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 230ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 240ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 250ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 260ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 270ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// POSSIBILITY OF SUCH DAMAGE. 280ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 290ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Author: Sanjay Ghemawat 300ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 311d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include "ceres/stringprintf.h" 321d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling 330ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <cerrno> 340ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <cstdarg> // For va_list and related operations 350ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <cstdio> // MSVC requires this for _vsnprintf 360ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <string> 370ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <vector> 380ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 390ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include "ceres/internal/port.h" 400ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 410ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongnamespace ceres { 420ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongnamespace internal { 430ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 440ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#ifdef _MSC_VER 450ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongenum { IS_COMPILER_MSVC = 1 }; 460ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#define va_copy(d,s) ((d) = (s)) 470ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#else 480ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongenum { IS_COMPILER_MSVC = 0 }; 490ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#endif 500ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 510ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongvoid StringAppendV(string* dst, const char* format, va_list ap) { 520ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // First try with a small fixed size buffer 530ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong char space[1024]; 540ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 550ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // It's possible for methods that use a va_list to invalidate 560ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // the data in it upon use. The fix is to make a copy 570ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // of the structure before using it and use that copy instead. 580ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_list backup_ap; 590ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_copy(backup_ap, ap); 600ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong int result = vsnprintf(space, sizeof(space), format, backup_ap); 610ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(backup_ap); 620ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 630ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong if (result < sizeof(space)) { 640ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong if (result >= 0) { 650ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // Normal case -- everything fit. 660ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong dst->append(space, result); 670ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return; 680ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong } 690ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 700ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong if (IS_COMPILER_MSVC) { 710ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // Error or MSVC running out of space. MSVC 8.0 and higher 720ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // can be asked about space needed with the special idiom below: 730ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_copy(backup_ap, ap); 740ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong result = vsnprintf(NULL, 0, format, backup_ap); 750ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(backup_ap); 760ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong } 770ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 780ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong if (result < 0) { 790ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // Just an error. 800ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return; 810ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong } 820ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong } 830ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 840ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // Increase the buffer size to the size requested by vsnprintf, 850ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // plus one for the closing \0. 860ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong int length = result+1; 870ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong char* buf = new char[length]; 880ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 890ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // Restore the va_list before we use it again 900ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_copy(backup_ap, ap); 910ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong result = vsnprintf(buf, length, format, backup_ap); 920ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(backup_ap); 930ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 940ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong if (result >= 0 && result < length) { 950ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong // It fit 960ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong dst->append(buf, result); 970ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong } 980ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong delete[] buf; 990ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 1000ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 1010ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 1020ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongstring StringPrintf(const char* format, ...) { 1030ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_list ap; 1040ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_start(ap, format); 1050ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong string result; 1060ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong StringAppendV(&result, format, ap); 1070ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(ap); 1080ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return result; 1090ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 1100ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 1110ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongconst string& SStringPrintf(string* dst, const char* format, ...) { 1120ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_list ap; 1130ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_start(ap, format); 1140ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong dst->clear(); 1150ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong StringAppendV(dst, format, ap); 1160ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(ap); 1170ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return *dst; 1180ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 1190ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 1200ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongvoid StringAppendF(string* dst, const char* format, ...) { 1210ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_list ap; 1220ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_start(ap, format); 1230ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong StringAppendV(dst, format, ap); 1240ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong va_end(ap); 1250ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 1260ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 1270ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} // namespace internal 1280ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} // namespace ceres 129