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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_STRING_CONVERTER_H
#define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_STRING_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"
#include <stddef.h>
namespace __llvm_libc {
namespace printf_core {
LIBC_INLINE int convert_string(Writer *writer, const FormatSection &to_conv) {
size_t string_len = 0;
for (char *cur_str = reinterpret_cast<char *>(to_conv.conv_val_ptr);
cur_str[string_len]; ++string_len) {
;
}
if (to_conv.precision >= 0 &&
static_cast<size_t>(to_conv.precision) < string_len)
string_len = to_conv.precision;
size_t padding_spaces = to_conv.min_width > static_cast<int>(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(
{reinterpret_cast<const char *>(to_conv.conv_val_ptr), string_len}));
// 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_STRING_CONVERTER_H
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