/
util.cpp
executable file
·771 lines (664 loc) · 18.5 KB
/
util.cpp
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
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
// vim: set ts=4 sw=4 tw=99 noet:
//
// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
// Copyright (C) The AMX Mod X Development Team.
//
// This software is licensed under the GNU General Public License, version 3 or higher.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
// https://alliedmods.net/amxmodx-license
#include <time.h>
#include "amxmodx.h"
#include <utf8rewind.h>
int UTIL_ReadFlags(const char* c)
{
int flags = 0;
while (*c)
flags |= (1<<(*c++ - 'a'));
return flags;
}
void UTIL_GetFlags(char* f, int a)
{
for (int i = 'a'; i <= 'z'; ++i)
{
if (a & 1) *f++ = i;
a >>= 1;
}
*f = 0;
}
/* warning - don't pass here const string */
void UTIL_ShowMenu(edict_t* pEdict, int slots, int time, char *menu, int mlen)
{
char *n = menu;
char c = 0;
int a;
if (!gmsgShowMenu)
return; // some games don't support ShowMenu (Firearms)
do
{
a = mlen;
if (a > 175) a = 175;
mlen -= a;
c = *(n+=a);
*n = 0;
MESSAGE_BEGIN(MSG_ONE, gmsgShowMenu, NULL, pEdict);
WRITE_SHORT(slots);
WRITE_CHAR(time);
WRITE_BYTE(c ? TRUE : FALSE);
WRITE_STRING(menu);
MESSAGE_END();
*n = c;
menu = n;
}
while (*n);
}
/* warning - don't pass here const string */
void UTIL_ShowMOTD(edict_t *client, char *motd, int mlen, const char *name)
{
if (!gmsgMOTD)
return; // :TODO: Maybe output a warning log?
if (gmsgServerName)
{
MESSAGE_BEGIN(MSG_ONE, gmsgServerName, NULL, client);
WRITE_STRING(name);
MESSAGE_END();
}
char *n = motd;
char c = 0;
int a;
while (*n)
{
a = mlen;
if (a > 175) a = 175;
mlen -= a;
c = *(n += a);
*n = 0;
MESSAGE_BEGIN(MSG_ONE, gmsgMOTD, NULL, client);
WRITE_BYTE(c ? FALSE : TRUE);
WRITE_STRING(motd);
MESSAGE_END();
*n = c;
motd = n;
}
if (gmsgServerName)
{
MESSAGE_BEGIN(MSG_ONE, gmsgServerName, NULL, client);
WRITE_STRING(hostname->string);
MESSAGE_END();
}
}
void UTIL_IntToString(int value, char *output)
{
static const char *words[] =
{"zero ","one ","two ","three ","four ",
"five ", "six ","seven ","eight ","nine ","ten ",
"eleven ","twelve ","thirteen ","fourteen ","fifteen ",
"sixteen ","seventeen ","eighteen ","nineteen ",
"twenty ","thirty ","fourty ", "fifty ","sixty ",
"seventy ","eighty ","ninety ",
"hundred ","thousand "};
*output = 0;
if (value < 0) value = -value;
int tho = value / 1000;
int aaa = 0;
if (tho)
{
aaa += sprintf(&output[aaa], "%s", words[tho]);
aaa += sprintf(&output[aaa], "%s", words[29]);
value = value % 1000;
}
int hun = value / 100;
if (hun)
{
aaa += sprintf(&output[aaa], "%s", words[hun]);
aaa += sprintf(&output[aaa], "%s", words[28]);
value = value % 100;
}
int ten = value / 10;
int unit = value % 10;
if (ten)
aaa += sprintf(&output[aaa], "%s", words[(ten > 1) ? (ten + 18) : (unit + 10)]);
if (ten != 1 && (unit || (!value && !hun && !tho)))
sprintf(&output[aaa], "%s", words[unit]);
}
char* UTIL_SplitHudMessage(const char *src)
{
static char message[512];
short b = 0, d = 0, e = 0, c = -1;
while (src[d] && e < 480)
{
if (src[d] == ' ')
{
c = e;
}
else if (src[d] == '\n')
{
c = -1;
b = 0;
}
message[e++] = src[d++];
if (++b == 69)
{
if (c == -1)
{
message[e++] = '\n';
b = 0;
} else {
message[c] = '\n';
b = e - c - 1;
c = -1;
}
}
}
message[e] = 0;
return message;
}
unsigned short FixedUnsigned16(float value, float scale)
{
int output = (int)(value * scale);
if (output < 0)
output = 0;
else if (output > 0xFFFF)
output = 0xFFFF;
return (unsigned short)output;
}
short FixedSigned16(float value, float scale)
{
int output = (int)(value * scale);
if (output > 32767)
output = 32767;
else if (output < -32768)
output = -32768;
return (short)output;
}
void UTIL_HudMessage(edict_t *pEntity, const hudtextparms_t &textparms, const char *pMessage)
{
if (pEntity)
MESSAGE_BEGIN(MSG_ONE_UNRELIABLE, SVC_TEMPENTITY, NULL, pEntity);
else
MESSAGE_BEGIN(MSG_BROADCAST, SVC_TEMPENTITY);
WRITE_BYTE(29);
WRITE_BYTE(textparms.channel & 0xFF);
WRITE_SHORT(FixedSigned16(textparms.x, (1<<13)));
WRITE_SHORT(FixedSigned16(textparms.y, (1<<13)));
WRITE_BYTE(textparms.effect);
WRITE_BYTE(textparms.r1);
WRITE_BYTE(textparms.g1);
WRITE_BYTE(textparms.b1);
WRITE_BYTE(textparms.a1);
WRITE_BYTE(textparms.r2);
WRITE_BYTE(textparms.g2);
WRITE_BYTE(textparms.b2);
WRITE_BYTE(textparms.a2);
WRITE_SHORT(FixedUnsigned16(textparms.fadeinTime, (1<<8)));
WRITE_SHORT(FixedUnsigned16(textparms.fadeoutTime, (1<<8)));
WRITE_SHORT(FixedUnsigned16(textparms.holdTime, (1<<8)));
if (textparms.effect == 2)
WRITE_SHORT(FixedUnsigned16(textparms.fxTime, (1<<8)));
WRITE_STRING(pMessage);
MESSAGE_END();
}
void UTIL_DHudMessage(edict_t *pEntity, const hudtextparms_t &textparms, const char *pMessage, unsigned int length)
{
#define DRC_CMD_MESSAGE 6
if (pEntity)
MESSAGE_BEGIN(MSG_ONE_UNRELIABLE, SVC_DIRECTOR, NULL, pEntity);
else
MESSAGE_BEGIN(MSG_BROADCAST, SVC_DIRECTOR);
WRITE_BYTE(length + 31); // message length (counting WRITE size)
WRITE_BYTE(DRC_CMD_MESSAGE);
WRITE_BYTE(textparms.effect);
WRITE_LONG(textparms.b1 + (textparms.g1 << 8) + (textparms.r1 << 16)); // pack color.
WRITE_LONG(amx_ftoc(textparms.x));
WRITE_LONG(amx_ftoc(textparms.y));
WRITE_LONG(amx_ftoc(textparms.fadeinTime));
WRITE_LONG(amx_ftoc(textparms.fadeoutTime));
WRITE_LONG(amx_ftoc(textparms.holdTime));
WRITE_LONG(amx_ftoc(textparms.fxTime));
WRITE_STRING(pMessage); // max length: 128. Truncated on the client.
MESSAGE_END();
}
/**
* User message size limit: 192 bytes
* Actual available size: 188 bytes (with EOS)
*/
void UTIL_ClientPrint(edict_t *pEntity, int msg_dest, char *msg)
{
if (!gmsgTextMsg)
return; // :TODO: Maybe output a warning log?
const auto canUseFormatString = g_official_mod && !g_bmod_dod; // Temporary exclusion for DoD until officially supported
const auto index = canUseFormatString ? 187 : 190;
char c = msg[index];
msg[index] = 0; // truncate without checking with strlen()
if (pEntity)
MESSAGE_BEGIN(MSG_ONE, gmsgTextMsg, NULL, pEntity);
else
MESSAGE_BEGIN(MSG_BROADCAST, gmsgTextMsg);
WRITE_BYTE(msg_dest); // 1 byte
if (canUseFormatString)
WRITE_STRING("%s"); // 3 bytes (2 + EOS)
WRITE_STRING(msg); // max 188 bytes (187 + EOS)
MESSAGE_END(); // max 192 bytes
msg[index] = c;
}
/**
* User message size limit: 192 bytes
* Actual available size: 188 bytes (with EOS)
*/
void UTIL_ClientSayText(edict_t *pEntity, int sender, char *msg)
{
if (!gmsgSayText)
return; // :TODO: Maybe output a warning log?
const auto canUseFormatString = g_official_mod && !g_bmod_dod; // Temporary exclusion for DoD until officially supported
const auto index = canUseFormatString ? 187 : 190;
char c = msg[index];
msg[index] = 0; // truncate without checking with strlen()
MESSAGE_BEGIN(MSG_ONE, gmsgSayText, NULL, pEntity);
WRITE_BYTE(sender); // 1 byte
if (canUseFormatString)
WRITE_STRING("%s"); // 3 bytes (2 + EOS)
WRITE_STRING(msg); // max 188 bytes (187 + EOS)
MESSAGE_END(); // max 192 bytes
msg[index] = c;
}
void UTIL_TeamInfo(edict_t *pEntity, int playerIndex, const char *pszTeamName)
{
if (!gmsgTeamInfo)
return;
MESSAGE_BEGIN(MSG_ONE, gmsgTeamInfo, NULL, pEntity);
WRITE_BYTE(playerIndex);
WRITE_STRING(pszTeamName);
MESSAGE_END();
}
// UTIL_FakeClientCommand
// PURPOSE: Sends a fake client command to GameDLL
// HOW DOES IT WORK:
// 1) Stores command and arguments into a global and sets the global "fake" flag to true
// 2) Invokes ClientCommand in GameDLL
// 3) meta_api.cpp overrides Cmd_Args, Cmd_Argv, Cmd_Argc and gives them fake values if the "fake" flag is set
// 4) unsets the global "fake" flag
void UTIL_FakeClientCommand(edict_t *pEdict, const char *cmd, const char *arg1, const char *arg2, bool fwd)
{
if (!cmd)
return; // no command
// store command
g_fakecmd.argv[0] = cmd;
// if only arg2 is passed, swap the arguments
if (!arg1 && arg2)
{
arg1 = arg2;
arg2 = NULL;
}
// store arguments
if (arg2)
{ // both arguments passed
g_fakecmd.argc = 3; // 2 arguments + 1 command
// store arguments
g_fakecmd.argv[1] = arg1;
g_fakecmd.argv[2] = arg2;
// build argument line
ke::SafeSprintf(g_fakecmd.args, sizeof(g_fakecmd.args), "%s %s", arg1, arg2);
}
else if (arg1)
{ // only one argument passed
g_fakecmd.argc = 2; // 1 argument + 1 command
// store argument
g_fakecmd.argv[1] = arg1;
// build argument line
ke::SafeSprintf(g_fakecmd.args, sizeof(g_fakecmd.args), "%s", arg1);
}
else
g_fakecmd.argc = 1; // no argmuents -> only one command
/* Notify plugins about this command */
if (fwd)
{
/* Set flag so read_argc/v/s functions will give proper value */
g_fakecmd.notify = true;
if (executeForwards(FF_ClientCommand, static_cast<cell>(GET_PLAYER_POINTER(pEdict)->index)) > 0)
{
g_fakecmd.notify = false;
return;
}
/* check for command and if needed also for first argument and call proper function */
CmdMngr::iterator aa = g_commands.clcmdprefixbegin(cmd);
if (!aa)
{
aa = g_commands.clcmdbegin();
}
while (aa)
{
if ((*aa).matchCommandLine(cmd, arg1) && (*aa).getPlugin()->isExecutable((*aa).getFunction()))
{
if (executeForwards((*aa).getFunction(), static_cast<cell>(GET_PLAYER_POINTER(pEdict)->index),
static_cast<cell>((*aa).getFlags()), static_cast<cell>((*aa).getId())) > 0)
{
g_fakecmd.notify = false;
return;
}
}
++aa;
}
/* Unset flag */
g_fakecmd.notify = false;
}
// set the global "fake" flag so the Cmd_Arg* functions will be superceded
g_fakecmd.fake = true;
// tell the GameDLL that the client sent a command
MDLL_ClientCommand(pEdict);
// unset the global "fake" flag
g_fakecmd.fake = false;
}
unsigned int UTIL_GetUTF8CharBytes(const char *stream)
{
unsigned char c = *(unsigned char *)stream;
if (c & (1 << 7))
{
if (c & (1 << 5))
{
if (c & (1 << 4))
{
return 4;
}
return 3;
}
return 2;
}
return 1;
}
template int UTIL_CheckValidChar<char>(char *);
template int UTIL_CheckValidChar<cell>(cell *);
template <typename D>
int UTIL_CheckValidChar(D *c)
{
int count;
int bytecount = 0;
for (count = 1; (*c & 0xC0) == 0x80; count++)
{
c--;
}
switch (*c & 0xF0)
{
case 0xC0:
case 0xD0:
{
bytecount = 2;
break;
}
case 0xE0:
{
bytecount = 3;
break;
}
case 0xF0:
{
bytecount = 4;
break;
}
}
if (bytecount != count)
{
return count;
}
return 0;
}
static char OutputBuffer1[MAX_BUFFER_LENGTH];
static char OutputBuffer2[MAX_BUFFER_LENGTH];
char* utf8stristr(const char *string1, const char *string2)
{
auto string1Length = utf8casefold(string1, strlen(string1), OutputBuffer1, MAX_BUFFER_LENGTH - 1, UTF8_LOCALE_DEFAULT, nullptr, TRUE);
auto string2Length = utf8casefold(string2, strlen(string2), OutputBuffer2, MAX_BUFFER_LENGTH - 1, UTF8_LOCALE_DEFAULT, nullptr, TRUE);
OutputBuffer1[string1Length] = '\0';
OutputBuffer2[string2Length] = '\0';
return strstr(OutputBuffer1, OutputBuffer2);
}
int utf8strncasecmp(const char *string1, const char *string2, size_t n)
{
auto string1Length = utf8casefold(string1, strlen(string1), OutputBuffer1, MAX_BUFFER_LENGTH - 1, UTF8_LOCALE_DEFAULT, nullptr, TRUE);
auto string2Length = utf8casefold(string2, strlen(string2), OutputBuffer2, MAX_BUFFER_LENGTH - 1, UTF8_LOCALE_DEFAULT, nullptr, TRUE);
OutputBuffer1[string1Length] = '\0';
OutputBuffer2[string2Length] = '\0';
return n != 0 ? strncmp(OutputBuffer1, OutputBuffer2, n) : strcmp(OutputBuffer1, OutputBuffer2);
}
int utf8strcasecmp(const char *string1, const char *string2)
{
return utf8strncasecmp(string1, string2, 0);
}
size_t UTIL_ReplaceAll(char *subject, size_t maxlength, const char *search, size_t searchLen, const char *replace, size_t replaceLen, bool caseSensitive)
{
char *newptr, *ptr = subject;
unsigned int total = 0;
while ((newptr = UTIL_ReplaceEx(ptr, maxlength, search, searchLen, replace, replaceLen, caseSensitive)) != NULL)
{
total++;
maxlength -= newptr - ptr;
ptr = newptr;
if (*ptr == '\0')
{
break;
}
}
return total;
}
size_t UTIL_ReplaceAll(char *subject, size_t maxlength, const char *search, const char *replace, bool caseSensitive)
{
return UTIL_ReplaceAll(subject, maxlength, search, strlen(search), replace, strlen(replace), caseSensitive);
}
template unsigned int strncopy<char, char>(char *, const char *, size_t);
template unsigned int strncopy<char, cell>(char *, const cell *, size_t);
template unsigned int strncopy<cell, char>(cell *, const char *, size_t);
template unsigned int strncopy<cell, cell>(cell *, const cell *, size_t);
template <typename D, typename S>
unsigned int strncopy(D *dest, const S *src, size_t count)
{
if (!count)
{
return 0;
}
D *start = dest;
while ((*src) && (--count))
{
*dest++ = *(unsigned char*)src++;
}
*dest = '\0';
return (dest - start);
}
/**
* NOTE: Do not edit this for the love of god unless you have
* read the test cases and understand the code behind each one.
* While I don't guarantee there aren't mistakes, I do guarantee
* that plugins will end up relying on tiny idiosyncrasies of this
* function, just like they did with AMX Mod X.
*
* There are explicitly more cases than the AMX Mod X version because
* we're not doing a blind copy. Each case is specifically optimized
* for what needs to be done. Even better, we don't have to error on
* bad buffer sizes. Instead, this function will smartly cut off the
* string in a way that pushes old data out.
*/
char *UTIL_ReplaceEx(char *subject, size_t maxLen, const char *search, size_t searchLen, const char *replace, size_t replaceLen, bool caseSensitive)
{
char *ptr = subject;
size_t browsed = 0;
size_t textLen = strlen(subject);
/* It's not possible to search or replace */
if (searchLen > textLen)
{
return NULL;
}
/* Handle the case of one byte replacement.
* It's only valid in one case.
*/
if (maxLen == 1)
{
/* If the search matches and the replace length is 0,
* we can just terminate the string and be done.
*/
if ((caseSensitive ? strcmp(subject, search) : utf8strcasecmp(subject, search)) == 0 && replaceLen == 0)
{
*subject = '\0';
return subject;
}
else
{
return NULL;
}
}
/* Subtract one off the maxlength so we can include the null terminator */
maxLen--;
while (*ptr != '\0' && (browsed <= textLen - searchLen))
{
/* See if we get a comparison */
if ((caseSensitive ? strncmp(ptr, search, searchLen) : utf8strncasecmp(ptr, search, searchLen)) == 0)
{
if (replaceLen > searchLen)
{
/* First, see if we have enough space to do this operation */
if (maxLen - textLen < replaceLen - searchLen)
{
/* First, see if the replacement length goes out of bounds. */
if (browsed + replaceLen >= maxLen)
{
/* EXAMPLE CASE:
* Subject: AABBBCCC
* Buffer : 12 bytes
* Search : BBB
* Replace: DDDDDDDDDD
* OUTPUT : AADDDDDDDDD
* POSITION: ^
*/
/* If it does, we'll just bound the length and do a strcpy. */
replaceLen = maxLen - browsed;
/* Note, we add one to the final result for the null terminator */
strncopy(ptr, replace, replaceLen + 1);
/* Don't truncate a multi-byte character */
if (*(ptr + replaceLen - 1) & 1 << 7)
{
replaceLen -= UTIL_CheckValidChar(ptr + replaceLen - 1);
*(ptr + replaceLen) = '\0';
}
}
else
{
/* EXAMPLE CASE:
* Subject: AABBBCCC
* Buffer : 12 bytes
* Search : BBB
* Replace: DDDDDDD
* OUTPUT : AADDDDDDDCC
* POSITION: ^
*/
/* We're going to have some bytes left over... */
size_t origBytesToCopy = (textLen - (browsed + searchLen)) + 1;
size_t realBytesToCopy = (maxLen - (browsed + replaceLen)) + 1;
char *moveFrom = ptr + searchLen + (origBytesToCopy - realBytesToCopy);
char *moveTo = ptr + replaceLen;
/* First, move our old data out of the way. */
memmove(moveTo, moveFrom, realBytesToCopy);
/* Now, do our replacement. */
memcpy(ptr, replace, replaceLen);
}
}
else
{
/* EXAMPLE CASE:
* Subject: AABBBCCC
* Buffer : 12 bytes
* Search : BBB
* Replace: DDDD
* OUTPUT : AADDDDCCC
* POSITION: ^
*/
/* Yes, we have enough space. Do a normal move operation. */
char *moveFrom = ptr + searchLen;
char *moveTo = ptr + replaceLen;
/* First move our old data out of the way. */
size_t bytesToCopy = (textLen - (browsed + searchLen)) + 1;
memmove(moveTo, moveFrom, bytesToCopy);
/* Now do our replacement. */
memcpy(ptr, replace, replaceLen);
}
}
else if (replaceLen < searchLen)
{
/* EXAMPLE CASE:
* Subject: AABBBCCC
* Buffer : 12 bytes
* Search : BBB
* Replace: D
* OUTPUT : AADCCC
* POSITION: ^
*/
/* If the replacement does not grow the string length, we do not
* need to do any fancy checking at all. Yay!
*/
char *moveFrom = ptr + searchLen; /* Start after the search pointer */
char *moveTo = ptr + replaceLen; /* Copy to where the replacement ends */
/* Copy our replacement in, if any */
if (replaceLen)
{
memcpy(ptr, replace, replaceLen);
}
/* Figure out how many bytes to move down, including null terminator */
size_t bytesToCopy = (textLen - (browsed + searchLen)) + 1;
/* Move the rest of the string down */
memmove(moveTo, moveFrom, bytesToCopy);
}
else
{
/* EXAMPLE CASE:
* Subject: AABBBCCC
* Buffer : 12 bytes
* Search : BBB
* Replace: DDD
* OUTPUT : AADDDCCC
* POSITION: ^
*/
/* We don't have to move anything around, just do a straight copy */
memcpy(ptr, replace, replaceLen);
}
return ptr + replaceLen;
}
ptr++;
browsed++;
}
return NULL;
}
// From Metamod:Source
void UTIL_TrimLeft(char *buffer)
{
/* Let's think of this as our iterator */
char *i = buffer;
/* Make sure the buffer isn't null */
if (i && *i)
{
/* Add up number of whitespace characters */
while (isspace(static_cast<unsigned char>(*i)))
{
i++;
}
/* If whitespace chars in buffer then adjust string so first non-whitespace char is at start of buffer */
if (i != buffer)
{
memmove(buffer, i, (strlen(i) + 1) * sizeof(char));
}
}
}
void UTIL_TrimRight(char *buffer)
{
/* Make sure buffer isn't null */
if (buffer)
{
size_t len = strlen(buffer);
/* Loop through buffer backwards while replacing whitespace chars with null chars */
for (size_t i = len - 1; i < len; i--)
{
if (isspace(static_cast<unsigned char>(buffer[i])))
{
buffer[i] = '\0';
}
else
{
break;
}
}
}
}