51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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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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*/
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#include "berberis/base/format_buffer.h"
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#include <cstdarg>
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#include <cstddef> // size_t
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namespace berberis {
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size_t FormatBuffer(char* buf, size_t buf_size, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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size_t n = FormatBufferV(buf, buf_size, format, ap);
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va_end(ap);
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return n;
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}
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size_t FormatBufferV(char* buf, size_t buf_size, const char* format, va_list ap) {
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if (!buf) {
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return 0;
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}
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if (!buf_size) {
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return 0;
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}
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CStrBuffer out(buf, buf_size - 1); // reserve space for '\0'!
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if (format) {
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FormatBufferVaListArgs args(ap);
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FormatBufferImpl<CStrBuffer, FormatBufferVaListArgs>(&out, format, &args);
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}
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size_t n = out.Size();
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buf[n] = '\0';
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return n;
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}
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} // namespace berberis
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