mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-29 16:40:38 +08:00
Keir Mierle
7492b0d8de
Since Ceres is moving to using GitHub for issues, and the Google Code URL in the current copyright header will soon become invalid, update all the headers. Change-Id: I1fce70375d1bcf098591f07b4d8f01a5c1e0789c
133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
// Ceres Solver - A fast non-linear least squares minimizer
|
|
// Copyright 2015 Google Inc. All rights reserved.
|
|
// http://ceres-solver.org/
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without
|
|
// specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Author: Sanjay Ghemawat
|
|
|
|
#include "ceres/stringprintf.h"
|
|
|
|
#include <cerrno>
|
|
#include <cstdarg> // For va_list and related operations
|
|
#include <cstdio> // MSVC requires this for _vsnprintf
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "ceres/internal/port.h"
|
|
|
|
namespace ceres {
|
|
namespace internal {
|
|
|
|
using std::string;
|
|
|
|
#ifdef _MSC_VER
|
|
enum { IS_COMPILER_MSVC = 1 };
|
|
#if _MSC_VER < 1800
|
|
#define va_copy(d, s) ((d) = (s))
|
|
#endif
|
|
#else
|
|
enum { IS_COMPILER_MSVC = 0 };
|
|
#endif
|
|
|
|
void StringAppendV(string* dst, const char* format, va_list ap) {
|
|
// First try with a small fixed size buffer
|
|
char space[1024];
|
|
|
|
// It's possible for methods that use a va_list to invalidate
|
|
// the data in it upon use. The fix is to make a copy
|
|
// of the structure before using it and use that copy instead.
|
|
va_list backup_ap;
|
|
va_copy(backup_ap, ap);
|
|
int result = vsnprintf(space, sizeof(space), format, backup_ap);
|
|
va_end(backup_ap);
|
|
|
|
if (result < sizeof(space)) {
|
|
if (result >= 0) {
|
|
// Normal case -- everything fit.
|
|
dst->append(space, result);
|
|
return;
|
|
}
|
|
|
|
if (IS_COMPILER_MSVC) {
|
|
// Error or MSVC running out of space. MSVC 8.0 and higher
|
|
// can be asked about space needed with the special idiom below:
|
|
va_copy(backup_ap, ap);
|
|
result = vsnprintf(NULL, 0, format, backup_ap);
|
|
va_end(backup_ap);
|
|
}
|
|
|
|
if (result < 0) {
|
|
// Just an error.
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Increase the buffer size to the size requested by vsnprintf,
|
|
// plus one for the closing \0.
|
|
int length = result+1;
|
|
char* buf = new char[length];
|
|
|
|
// Restore the va_list before we use it again
|
|
va_copy(backup_ap, ap);
|
|
result = vsnprintf(buf, length, format, backup_ap);
|
|
va_end(backup_ap);
|
|
|
|
if (result >= 0 && result < length) {
|
|
// It fit
|
|
dst->append(buf, result);
|
|
}
|
|
delete[] buf;
|
|
}
|
|
|
|
|
|
string StringPrintf(const char* format, ...) {
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
string result;
|
|
StringAppendV(&result, format, ap);
|
|
va_end(ap);
|
|
return result;
|
|
}
|
|
|
|
const string& SStringPrintf(string* dst, const char* format, ...) {
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
dst->clear();
|
|
StringAppendV(dst, format, ap);
|
|
va_end(ap);
|
|
return *dst;
|
|
}
|
|
|
|
void StringAppendF(string* dst, const char* format, ...) {
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
StringAppendV(dst, format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
} // namespace internal
|
|
} // namespace ceres
|