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//===-- String Converter for printf -----------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H
#define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H
#include "src/__support/CPP/string_view.h"
#include "src/__support/common.h"
#include "src/stdio/printf_core/converter_utils.h"
#include "src/stdio/printf_core/core_structs.h"
#include "src/stdio/printf_core/writer.h"
namespace __llvm_libc {
namespace printf_core {
LIBC_INLINE int convert_char(Writer *writer, const FormatSection &to_conv) {
char c = static_cast<uint8_t>(to_conv.conv_val_raw);
constexpr int string_len = 1;
size_t padding_spaces =
to_conv.min_width > string_len ? to_conv.min_width - string_len : 0;
// If the padding is on the left side, write the spaces first.
if (padding_spaces > 0 &&
(to_conv.flags & FormatFlags::LEFT_JUSTIFIED) == 0) {
RET_IF_RESULT_NEGATIVE(writer->write(' ', to_conv.min_width - string_len));
}
RET_IF_RESULT_NEGATIVE(writer->write(c));
// If the padding is on the right side, write the spaces last.
if (padding_spaces > 0 &&
(to_conv.flags & FormatFlags::LEFT_JUSTIFIED) != 0) {
RET_IF_RESULT_NEGATIVE(writer->write(' ', to_conv.min_width - string_len));
}
return WRITE_OK;
}
} // namespace printf_core
} // namespace __llvm_libc
#endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H
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