| 1 | //===-- String Converter for printf -----------------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H |
| 10 | #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H |
| 11 | |
| 12 | #include "src/stdio/printf_core/converter_utils.h" |
| 13 | #include "src/stdio/printf_core/core_structs.h" |
| 14 | #include "src/stdio/printf_core/writer.h" |
| 15 | |
| 16 | namespace LIBC_NAMESPACE { |
| 17 | namespace printf_core { |
| 18 | |
| 19 | LIBC_INLINE int convert_char(Writer *writer, const FormatSection &to_conv) { |
| 20 | char c = static_cast<char>(to_conv.conv_val_raw); |
| 21 | |
| 22 | constexpr int STRING_LEN = 1; |
| 23 | |
| 24 | size_t padding_spaces = |
| 25 | to_conv.min_width > STRING_LEN ? to_conv.min_width - STRING_LEN : 0; |
| 26 | |
| 27 | // If the padding is on the left side, write the spaces first. |
| 28 | if (padding_spaces > 0 && |
| 29 | (to_conv.flags & FormatFlags::LEFT_JUSTIFIED) == 0) { |
| 30 | RET_IF_RESULT_NEGATIVE(writer->write(' ', padding_spaces)); |
| 31 | } |
| 32 | |
| 33 | RET_IF_RESULT_NEGATIVE(writer->write(c)); |
| 34 | |
| 35 | // If the padding is on the right side, write the spaces last. |
| 36 | if (padding_spaces > 0 && |
| 37 | (to_conv.flags & FormatFlags::LEFT_JUSTIFIED) != 0) { |
| 38 | RET_IF_RESULT_NEGATIVE(writer->write(' ', padding_spaces)); |
| 39 | } |
| 40 | |
| 41 | return WRITE_OK; |
| 42 | } |
| 43 | |
| 44 | } // namespace printf_core |
| 45 | } // namespace LIBC_NAMESPACE |
| 46 | |
| 47 | #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CHAR_CONVERTER_H |
| 48 |