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