39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
// Copyright 2015 Google Inc. All rights reserved
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build ignore
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#include "stringprintf.h"
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#include <assert.h>
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#include <stdarg.h>
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string StringPrintf(const char* format, ...) {
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string str;
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str.resize(128);
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for (int i = 0; i < 2; i++) {
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va_list args;
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va_start(args, format);
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int ret = vsnprintf(&str[0], str.size(), format, args);
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va_end(args);
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assert(ret >= 0);
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if (static_cast<size_t>(ret) < str.size()) {
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str.resize(ret);
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return str;
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}
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str.resize(ret + 1);
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}
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assert(false);
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__builtin_unreachable();
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}
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