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//===-- Implementation of vprintf -------------------------------*- 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/stdio/vprintf.h"
#include "src/__support/CPP/limits.h"
#include "src/__support/File/file.h"
#include "src/__support/arg_list.h"
#include "src/__support/macros/config.h"
#include "src/stdio/printf_core/core_structs.h"
#include "src/stdio/printf_core/error_mapper.h"
#include "src/stdio/printf_core/vfprintf_internal.h"
#include "hdr/types/FILE.h"
#include <stdarg.h>
#ifndef LIBC_COPT_STDIO_USE_SYSTEM_FILE
#define PRINTF_STDOUT LIBC_NAMESPACE::stdout
#else // LIBC_COPT_STDIO_USE_SYSTEM_FILE
#define PRINTF_STDOUT ::stdout
#endif // LIBC_COPT_STDIO_USE_SYSTEM_FILE
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, vprintf,
(const char *__restrict format, va_list vlist)) {
internal::ArgList args(vlist); // This holder class allows for easier copying
// and pointer semantics, as well as handling
// destruction automatically.
auto ret_val = printf_core::vfprintf_internal(
reinterpret_cast<::FILE *>(PRINTF_STDOUT), format, args);
if (!ret_val.has_value()) {
libc_errno = printf_core::internal_error_to_errno(ret_val.error());
return -1;
}
if (ret_val.value() > cpp::numeric_limits<int>::max()) {
libc_errno =
printf_core::internal_error_to_errno(-printf_core::OVERFLOW_ERROR);
return -1;
}
return static_cast<int>(ret_val.value());
}
} // namespace LIBC_NAMESPACE_DECL
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