1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
/***************************************************************************************************
Zyan Core Library (Zycore-C)
Original Author : Florian Bernd
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
/**
* @file
* Provides helper functions for performant number to string conversion.
*/
#ifndef ZYCORE_FORMAT_H
#define ZYCORE_FORMAT_H
#include "ZycoreExportConfig.h"
#include "ZycoreStatus.h"
#include "ZycoreString.h"
#include "ZycoreTypes.h"
#include <wtf/Compiler.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#ifdef __cplusplus
extern "C" {
#endif
/* ============================================================================================== */
/* Exported functions */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Helpers */
/* ---------------------------------------------------------------------------------------------- */
/**
* Get the absolute value of a 64 bit int.
*
* @param x The value to process.
* @return The absolute, unsigned value.
*
* This gracefully deals with the special case of `x` being `INT_MAX`.
*/
ZYAN_INLINE ZyanU64 ZyanAbsI64(ZyanI64 x)
{
// INT_MIN special case. Can't use the value directly because GCC thinks
// it's too big for an INT64 literal, however is perfectly happy to accept
// this expression. This is also hit INT64_MIN is defined in `stdint.h`.
if (x == (-0x7fffffffffffffff - 1))
{
return 0x8000000000000000u;
}
return (ZyanU64)(x < 0 ? -x : x);
}
/* ---------------------------------------------------------------------------------------------- */
/* Insertion */
/* ---------------------------------------------------------------------------------------------- */
/**
* Inserts formatted text in the destination string at the given `index`.
*
* @param string The destination string.
* @param index The insert index.
* @param format The format string.
* @param ... The format arguments.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYAN_PRINTF_ATTR(3, 4)
ZYCORE_EXPORT ZyanStatus ZyanStringInsertFormat(ZyanString* string, ZyanUSize index,
const char* format, ...);
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given unsigned ordinal `value` to its decimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertDecU(ZyanString* string, ZyanUSize index, ZyanU64 value,
ZyanU8 padding_length);
/**
* Formats the given signed ordinal `value` to its decimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertDecS(ZyanString* string, ZyanUSize index, ZyanI64 value,
ZyanU8 padding_length, ZyanBool force_sign, const ZyanString* prefix);
/**
* Formats the given unsigned ordinal `value` to its hexadecimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertHexU(ZyanString* string, ZyanUSize index, ZyanU64 value,
ZyanU8 padding_length, ZyanBool uppercase);
/**
* Formats the given signed ordinal `value` to its hexadecimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertHexS(ZyanString* string, ZyanUSize index, ZyanI64 value,
ZyanU8 padding_length, ZyanBool uppercase, ZyanBool force_sign, const ZyanString* prefix);
/* ---------------------------------------------------------------------------------------------- */
/* Appending */
/* ---------------------------------------------------------------------------------------------- */
#ifndef ZYAN_NO_LIBC
/**
* Appends formatted text to the destination string.
*
* @param string The destination string.
* @param format The format string.
* @param ... The format arguments.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYAN_PRINTF_ATTR(2, 3)
ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanStringAppendFormat(
ZyanString* string, const char* format, ...);
#endif // ZYAN_NO_LIBC
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given unsigned ordinal `value` to its decimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendDecU(ZyanString* string, ZyanU64 value,
ZyanU8 padding_length);
/**
* Formats the given signed ordinal `value` to its decimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendDecS(ZyanString* string, ZyanI64 value,
ZyanU8 padding_length, ZyanBool force_sign, const ZyanStringView* prefix);
/**
* Formats the given unsigned ordinal `value` to its hexadecimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendHexU(ZyanString* string, ZyanU64 value,
ZyanU8 padding_length, ZyanBool uppercase);
/**
* Formats the given signed ordinal `value` to its hexadecimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendHexS(ZyanString* string, ZyanI64 value,
ZyanU8 padding_length, ZyanBool uppercase, ZyanBool force_sign, const ZyanStringView* prefix);
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
#ifdef __cplusplus
}
#endif
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ZYCORE_FORMAT_H
|
