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1//===-- Format specifier 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_CONVERTER_H
10#define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CONVERTER_H
11
12#include "src/__support/macros/config.h"
13#include "src/stdio/printf_core/core_structs.h"
14#include "src/stdio/printf_core/printf_config.h"
15#include "src/stdio/printf_core/strerror_converter.h"
16#include "src/stdio/printf_core/writer.h"
17
18// This option allows for replacing all of the conversion functions with custom
19// replacements. This allows conversions to be replaced at compile time.
20#ifndef LIBC_COPT_PRINTF_CONV_ATLAS
21#include "src/stdio/printf_core/converter_atlas.h"
22#else
23#include LIBC_COPT_PRINTF_CONV_ATLAS
24#endif
25
26#include <stddef.h>
27
28namespace LIBC_NAMESPACE_DECL {
29namespace printf_core {
30
31// convert will call a conversion function to convert the FormatSection into
32// its string representation, and then that will write the result to the
33// writer.
34template <WriteMode write_mode>
35int convert(Writer<write_mode> *writer, const FormatSection &to_conv) {
36 if (!to_conv.has_conv)
37 return writer->write(to_conv.raw_string);
38
39#if !defined(LIBC_COPT_PRINTF_DISABLE_FLOAT) && \
40 defined(LIBC_COPT_PRINTF_HEX_LONG_DOUBLE)
41 if (to_conv.length_modifier == LengthModifier::L) {
42 switch (to_conv.conv_name) {
43 case 'f':
44 case 'F':
45 case 'e':
46 case 'E':
47 case 'g':
48 case 'G':
49 return convert_float_hex_exp(writer, to_conv);
50 default:
51 break;
52 }
53 }
54#endif // LIBC_COPT_PRINTF_DISABLE_FLOAT
55
56 switch (to_conv.conv_name) {
57 case '%':
58 return writer->write("%");
59 case 'c':
60 return convert_char(writer, to_conv);
61 case 's':
62 return convert_string(writer, to_conv);
63 case 'd':
64 case 'i':
65 case 'u':
66 case 'o':
67 case 'x':
68 case 'X':
69 case 'b':
70 case 'B':
71 return convert_int(writer, to_conv);
72#ifndef LIBC_COPT_PRINTF_DISABLE_FLOAT
73 case 'f':
74 case 'F':
75 return convert_float_decimal(writer, to_conv);
76 case 'e':
77 case 'E':
78 return convert_float_dec_exp(writer, to_conv);
79 case 'a':
80 case 'A':
81 return convert_float_hex_exp(writer, to_conv);
82 case 'g':
83 case 'G':
84 return convert_float_dec_auto(writer, to_conv);
85#endif // LIBC_COPT_PRINTF_DISABLE_FLOAT
86#ifdef LIBC_INTERNAL_PRINTF_HAS_FIXED_POINT
87 case 'r':
88 case 'R':
89 case 'k':
90 case 'K':
91 return convert_fixed(writer, to_conv);
92#endif // LIBC_INTERNAL_PRINTF_HAS_FIXED_POINT
93#ifndef LIBC_COPT_PRINTF_DISABLE_STRERROR
94 case 'm':
95 return convert_strerror(writer, to_conv);
96#endif // LIBC_COPT_PRINTF_DISABLE_STRERROR
97#ifndef LIBC_COPT_PRINTF_DISABLE_WRITE_INT
98 case 'n':
99 return convert_write_int(writer, to_conv);
100#endif // LIBC_COPT_PRINTF_DISABLE_WRITE_INT
101 case 'p':
102 return convert_pointer(writer, to_conv);
103 default:
104 return writer->write(to_conv.raw_string);
105 }
106 return -1;
107}
108
109} // namespace printf_core
110} // namespace LIBC_NAMESPACE_DECL
111
112#endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CONVERTER_H
113

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source code of libc/src/stdio/printf_core/converter.h