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
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
|
/*
* Copyright 2010-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
*/
#include <bx/bx.h>
#include <bx/readerwriter.h>
#include <bx/debug.h>
namespace bx
{
void* memCopyRef(void* _dst, const void* _src, size_t _numBytes)
{
uint8_t* dst = (uint8_t*)_dst;
const uint8_t* end = dst + _numBytes;
const uint8_t* src = (const uint8_t*)_src;
while (dst != end)
{
*dst++ = *src++;
}
return _dst;
}
void* memCopy(void* _dst, const void* _src, size_t _numBytes)
{
#if BX_CRT_NONE
return memCopyRef(_dst, _src, _numBytes);
#else
return ::memcpy(_dst, _src, _numBytes);
#endif // BX_CRT_NONE
}
void memCopy(void* _dst, const void* _src, uint32_t _size, uint32_t _num, uint32_t _srcPitch, uint32_t _dstPitch)
{
const uint8_t* src = (const uint8_t*)_src;
uint8_t* dst = (uint8_t*)_dst;
for (uint32_t ii = 0; ii < _num; ++ii)
{
memCopy(dst, src, _size);
src += _srcPitch;
dst += _dstPitch;
}
}
///
void gather(void* _dst, const void* _src, uint32_t _size, uint32_t _num, uint32_t _srcPitch)
{
memCopy(_dst, _src, _size, _num, _srcPitch, _size);
}
///
void scatter(void* _dst, const void* _src, uint32_t _size, uint32_t _num, uint32_t _dstPitch)
{
memCopy(_dst, _src, _size, _num, _size, _dstPitch);
}
void* memMoveRef(void* _dst, const void* _src, size_t _numBytes)
{
uint8_t* dst = (uint8_t*)_dst;
const uint8_t* src = (const uint8_t*)_src;
if (_numBytes == 0
|| dst == src)
{
return dst;
}
// if (src+_numBytes <= dst || end <= src)
if (dst < src)
{
return memcpy(_dst, _src, _numBytes);
}
for (intptr_t ii = _numBytes-1; ii >= 0; --ii)
{
dst[ii] = src[ii];
}
return _dst;
}
void* memMove(void* _dst, const void* _src, size_t _numBytes)
{
#if BX_CRT_NONE
return memMoveRef(_dst, _src, _numBytes);
#else
return ::memmove(_dst, _src, _numBytes);
#endif // BX_CRT_NONE
}
void* memSetRef(void* _dst, uint8_t _ch, size_t _numBytes)
{
uint8_t* dst = (uint8_t*)_dst;
const uint8_t* end = dst + _numBytes;
while (dst != end)
{
*dst++ = char(_ch);
}
return _dst;
}
void* memSet(void* _dst, uint8_t _ch, size_t _numBytes)
{
#if BX_CRT_NONE
return memSetRef(_dst, _ch, _numBytes);
#else
return ::memset(_dst, _ch, _numBytes);
#endif // BX_CRT_NONE
}
namespace
{
struct Param
{
int32_t width;
uint32_t base;
uint32_t prec;
char fill;
bool left;
};
static int32_t write(WriterI* _writer, const char* _str, int32_t _len, const Param& _param, Error* _err)
{
int32_t size = 0;
int32_t len = (int32_t)strnlen(_str, _len);
int32_t padding = _param.width > len ? _param.width - len : 0;
if (!_param.left)
{
size += writeRep(_writer, _param.fill, padding, _err);
}
size += write(_writer, _str, len, _err);
if (_param.left)
{
size += writeRep(_writer, _param.fill, padding, _err);
}
return size;
}
static int32_t write(WriterI* _writer, const char* _str, const Param& _param, Error* _err)
{
return write(_writer, _str, INT32_MAX, _param, _err);
}
static int32_t write(WriterI* _writer, int32_t _i, const Param& _param, Error* _err)
{
char str[33];
int32_t len = toString(str, sizeof(str), _i, _param.base);
if (len == 0)
{
return 0;
}
return write(_writer, str, len, _param, _err);
}
static int32_t write(WriterI* _writer, uint32_t _i, const Param& _param, Error* _err)
{
char str[33];
int32_t len = toString(str, sizeof(str), _i, _param.base);
if (len == 0)
{
return 0;
}
return write(_writer, str, len, _param, _err);
}
static int32_t write(WriterI* _writer, double _d, const Param& _param, Error* _err)
{
char str[1024];
int32_t len = toString(str, sizeof(str), _d);
if (len == 0)
{
return 0;
}
const char* dot = strnchr(str, '.');
const int32_t precLen = int32_t(dot + 1 + _param.prec - str);
if (precLen > len)
{
for (int32_t ii = len; ii < precLen; ++ii)
{
str[ii] = '0';
}
str[precLen] = '\0';
}
len = precLen;
return write(_writer, str, len, _param, _err);
}
static int32_t write(WriterI* _writer, const void* _ptr, const Param& _param, Error* _err)
{
char str[35] = "0x";
int32_t len = toString(str + 2, sizeof(str) - 2, uint32_t(uintptr_t(_ptr) ), 16);
if (len == 0)
{
return 0;
}
len += 2;
return write(_writer, str, len, _param, _err);
}
} // anonymous namespace
int32_t write(WriterI* _writer, const char* _format, va_list _argList, Error* _err)
{
MemoryReader reader(_format, strnlen(_format) );
int32_t size = 0;
while (_err->isOk() )
{
char ch = '\0';
read(&reader, ch, _err);
if (!_err->isOk() )
{
break;
}
else if ('%' == ch)
{
// %[ -0][<width>][.<precision>]
read(&reader, ch);
Param param;
param.base = 10;
param.prec = 6;
param.left = false;
param.fill = ' ';
param.width = 0;
while (' ' == ch
|| '-' == ch
|| '0' == ch)
{
switch (ch)
{
case '-': param.left = true; break;
case ' ': param.fill = ' '; break;
case '0': param.fill = '0'; break;
}
if (param.left)
{
param.fill = ' ';
}
read(&reader, ch);
}
if ('*' == ch)
{
read(&reader, ch);
param.width = va_arg(_argList, int32_t);
if (0 > param.width)
{
param.left = true;
param.width = -param.width;
}
}
else
{
while (isNumeric(ch) )
{
param.width = param.width * 10 + ch - '0';
read(&reader, ch);
}
}
if ('.' == ch)
{
read(&reader, ch);
if ('*' == ch)
{
read(&reader, ch);
param.prec = va_arg(_argList, int32_t);
}
else
{
param.prec = 0;
while (isNumeric(ch) )
{
param.prec = param.prec * 10 + ch - '0';
read(&reader, ch);
}
}
}
switch (toLower(ch) )
{
case 'c':
size += write(_writer, char(va_arg(_argList, int32_t) ), _err);
break;
case 's':
size += write(_writer, va_arg(_argList, const char*), param, _err);
break;
case 'd':
param.base = 10;
size += write(_writer, va_arg(_argList, int32_t), param, _err);
break;
case 'f':
size += write(_writer, va_arg(_argList, double), param, _err);
break;
case 'p':
size += write(_writer, va_arg(_argList, void*), param, _err);
break;
case 'x':
param.base = 16;
size += write(_writer, va_arg(_argList, uint32_t), param, _err);
break;
case 'u':
param.base = 10;
size += write(_writer, va_arg(_argList, uint32_t), param, _err);
break;
default:
size += write(_writer, ch, _err);
break;
}
}
else
{
size += write(_writer, ch, _err);
}
}
size += write(_writer, '\0', _err);
return size;
}
int32_t write(WriterI* _writer, Error* _err, const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
int32_t size = write(_writer, _format, argList, _err);
va_end(argList);
return size;
}
} // namespace bx
|