mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-29 16:40:38 +08:00
Sameer Agarwal
ae65219e04
1. NULL -> nullptr 2. foo.reset(new Bar) -> = foo = std::make_unique<Bar>() 3. Missing std library includes & prefixes Change-Id: I260b261b484554be681ee5a7398126fdb3b3a789
123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
// Ceres Solver - A fast non-linear least squares minimizer
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// Copyright 2015 Google Inc. All rights reserved.
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// http://ceres-solver.org/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: Sanjay Ghemawat
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#include "ceres/stringprintf.h"
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#include <cerrno>
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#include <cstdarg> // For va_list and related operations
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#include <cstdio> // MSVC requires this for _vsnprintf
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#include <string>
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#include <vector>
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#include "ceres/internal/port.h"
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namespace ceres {
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namespace internal {
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using std::string;
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void StringAppendV(string* dst, const char* format, va_list ap) {
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// First try with a small fixed size buffer
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char space[1024];
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// It's possible for methods that use a va_list to invalidate
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// the data in it upon use. The fix is to make a copy
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// of the structure before using it and use that copy instead.
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va_list backup_ap;
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va_copy(backup_ap, ap);
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int result = vsnprintf(space, sizeof(space), format, backup_ap);
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va_end(backup_ap);
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if (result < sizeof(space)) {
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if (result >= 0) {
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// Normal case -- everything fit.
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dst->append(space, result);
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return;
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}
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#if defined(_MSC_VER)
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// Error or MSVC running out of space. MSVC 8.0 and higher
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// can be asked about space needed with the special idiom below:
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va_copy(backup_ap, ap);
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result = vsnprintf(nullptr, 0, format, backup_ap);
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va_end(backup_ap);
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#endif
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if (result < 0) {
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// Just an error.
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return;
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}
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}
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// Increase the buffer size to the size requested by vsnprintf,
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// plus one for the closing \0.
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int length = result + 1;
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char* buf = new char[length];
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// Restore the va_list before we use it again
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va_copy(backup_ap, ap);
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result = vsnprintf(buf, length, format, backup_ap);
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va_end(backup_ap);
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if (result >= 0 && result < length) {
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// It fit
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dst->append(buf, result);
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}
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delete[] buf;
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}
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string StringPrintf(const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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string result;
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StringAppendV(&result, format, ap);
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va_end(ap);
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return result;
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}
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const string& SStringPrintf(string* dst, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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dst->clear();
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StringAppendV(dst, format, ap);
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va_end(ap);
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return *dst;
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}
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void StringAppendF(string* dst, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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StringAppendV(dst, format, ap);
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va_end(ap);
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}
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} // namespace internal
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} // namespace ceres
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