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//===-- Implementation of strfromf ------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/stdlib/strfromf.h"
#include "src/__support/macros/config.h"
#include "src/stdlib/str_from_util.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, strfromf,
(char *__restrict s, size_t n, const char *__restrict format,
float fp)) {
LIBC_ASSERT(s != nullptr);
printf_core::FormatSection section =
internal::parse_format_string(format, fp);
printf_core::WriteBuffer<printf_core::Mode<
printf_core::WriteMode::FILL_BUFF_AND_DROP_OVERFLOW>::value>
wb(s, (n > 0 ? n - 1 : 0));
printf_core::Writer writer(wb);
int result = 0;
if (section.has_conv)
result = internal::strfromfloat_convert<float>(&writer, section);
else
result = writer.write(section.raw_string);
if (result < 0)
return result;
if (n > 0)
wb.buff[wb.buff_cur] = '\0';
return writer.get_chars_written();
}
} // namespace LIBC_NAMESPACE_DECL
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