genwrap.c 22.7 KB
Newer Older
1
2
3
/* General cross-platform development wrappers */

/* $Id$ */
4
// vi: tabstop=4
5
6
7
8
9

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
10
 * Copyright Rob Swindell - http://www.synchro.net/copyright.html			*
11
 *																			*
12
13
 * This library is free software; you can redistribute it and/or			*
 * modify it under the terms of the GNU Lesser General Public License		*
14
15
 * as published by the Free Software Foundation; either version 2			*
 * of the License, or (at your option) any later version.					*
16
17
 * See the GNU Lesser General Public License for more details: lgpl.txt or	*
 * http://www.fsf.org/copyleft/lesser.html									*
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 *																			*
 * Anonymous FTP access to the most recent released source is available at	*
 * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	*
 *																			*
 * Anonymous CVS access to the development source and modification history	*
 * is available at cvs.synchro.net:/cvsroot/sbbs, example:					*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login			*
 *     (just hit return, no password is necessary)							*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * You are encouraged to submit any modifications (preferably in Unix diff	*
 * format) via e-mail to mods@synchro.net									*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#include <string.h>     /* strlen() */
deuce's avatar
deuce committed
38
#include <stdarg.h>	/* vsnprintf() */
39
40
41
#include <stdlib.h>		/* RAND_MAX */
#include <fcntl.h>		/* O_NOCTTY */
#include <time.h>		/* clock() */
42
#include <errno.h>		/* errno */
43
#include <ctype.h>		/* toupper/tolower */
44
#include <limits.h>		/* CHAR_BIT */
45
#include <math.h>		/* fmod */
rswindell's avatar
rswindell committed
46

47
#if defined(__unix__)
48
	#include <sys/ioctl.h>		/* ioctl() */
49
	#include <sys/utsname.h>	/* uname() */
cyan's avatar
cyan committed
50
	#include <signal.h>
51
#elif defined(_WIN32)
deuce's avatar
deuce committed
52
53
	#include <windows.h>
	#include <lm.h>		/* NetWkstaGetInfo() */
54
#endif
55
56

#include "genwrap.h"	/* Verify prototypes */
rswindell's avatar
rswindell committed
57
#include "xpendian.h"	/* BYTE_SWAP */
58

59
60
61
/****************************************************************************/
/* Used to replace snprintf()  guarantees to terminate.			  			*/
/****************************************************************************/
62
int DLLCALL safe_snprintf(char *dst, size_t size, const char *fmt, ...)
63
64
65
66
67
68
69
{
	va_list argptr;
	int     numchars;

	va_start(argptr,fmt);
	numchars= vsnprintf(dst,size,fmt,argptr);
	va_end(argptr);
deuce's avatar
deuce committed
70
71
	if (size > 0)
		dst[size-1]=0;
72
73
#ifdef _MSC_VER
	if(numchars==-1)
74
		numchars=strlen(dst);
75
#endif
76
	if(numchars>=(int)size && numchars>0)
77
		numchars=size-1;
78
79
80
	return(numchars);
}

81
82
#ifdef _MSC_VER
/****************************************************************************/
83
/* Case insensitive version of strstr()	- currently heavy-handed			*/
84
85
86
/****************************************************************************/
char* DLLCALL strcasestr(const char* haystack, const char* needle)
{
87
88
89
90
91
92
93
94
	const char* p;
	size_t len = strlen(needle);

	for(p = haystack; *p != '\0'; p++) {
		if(strnicmp(p, needle, len) == 0)
			return (char*)p;
	}
	return NULL;
95
96
97
}
#endif

98
/****************************************************************************/
99
100
/* Return last character of string											*/
/****************************************************************************/
101
char* DLLCALL lastchar(const char* str)
102
103
104
105
106
107
{
	size_t	len;

	len = strlen(str);

	if(len)
108
		return((char*)&str[len-1]);
109

110
	return((char*)str);
111
112
113
}

/****************************************************************************/
114
115
/* Return character value of C-escaped (\) character						*/
/****************************************************************************/
116
char DLLCALL c_unescape_char(char ch)
117
118
{
	switch(ch) {
119
		case 'e':	return(ESC);	/* non-standard */
120
121
122
123
124
125
126
127
128
129
130
131
		case 'a':	return('\a');
		case 'b':	return('\b');
		case 'f':	return('\f');
		case 'n':	return('\n');
		case 'r':	return('\r');
		case 't':	return('\t');
		case 'v':	return('\v');
	}
	return(ch);
}

/****************************************************************************/
132
/* Return character value of C-escaped (\) character literal sequence		*/
133
/* supports \x## (hex) and \### sequences (for octal or decimal)			*/
134
/****************************************************************************/
135
char DLLCALL c_unescape_char_ptr(const char* str, char** endptr)
136
137
138
{
	char	ch;

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
	if(*str == 'x') {
		int digits = 0;		// \x## for hexadecimal character literals (only 2 digits supported)
		++str;
		ch = 0;
		while(digits < 2 && isxdigit(*str)) {
			ch *= 0x10;	
			ch += HEX_CHAR_TO_INT(*str);
			str++;
			digits++;
		}
#ifdef C_UNESCAPE_OCTAL_SUPPORT
	} else if(isodigit(*str)) {
		int digits = 0;		// \### for octal character literals (only 3 digits supported)
		ch = 0;
		while(digits < 3 && isodigit(*str)) {
			ch *= 8;
			ch += OCT_CHAR_TO_INT(*str);
			str++;
			digits++;
		}
#else
	} else if(isdigit(*str)) {
		int digits = 0;		// \### for decimal charater literals (only 3 digits supported)
		ch = 0;
		while(digits < 3 && isdigit(*str)) {
			ch *= 10;
			ch += DEC_CHAR_TO_INT(*str);
			str++;
			digits++;
		}
#endif
	 } else
171
		ch=c_unescape_char(*(str++));
172

173
174
175
176
	if(endptr!=NULL)
		*endptr=(char*)str;

	return ch;
177
178
179
180
181
}

/****************************************************************************/
/* Unescape a C string, in place											*/
/****************************************************************************/
182
char* DLLCALL c_unescape_str(char* str)
183
184
185
186
187
188
189
190
191
192
193
194
195
{
	char	ch;
	char*	buf;
	char*	src;
	char*	dst;

	if(str==NULL || (buf=strdup(str))==NULL)
		return(NULL);

	src=buf;
	dst=str;
	while((ch=*(src++))!=0) {
		if(ch=='\\')	/* escape */
196
			ch=c_unescape_char_ptr(src,&src);
197
198
199
200
201
202
203
		*(dst++)=ch;
	}
	*dst=0;
	free(buf);
	return(str);
}

204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
char* DLLCALL c_escape_char(char ch)
{
	switch(ch) {
		case 0:		return("\\x00");
		case 1:		return("\\x01");
		case ESC:	return("\\e");		/* non-standard */
		case '\a':	return("\\a");
		case '\b':	return("\\b");
		case '\f':	return("\\f");
		case '\n':	return("\\n");
		case '\r':	return("\\r");
		case '\t':	return("\\t");
		case '\v':	return("\\v");
		case '\\':	return("\\\\");
		case '\"':	return("\\\"");
		case '\'':	return("\\'");
	}
	return(NULL);
}

char* DLLCALL c_escape_str(const char* src, char* dst, size_t maxlen, BOOL ctrl_only)
{
	const char*	s;
227
228
	char*		d;
	const char*	e;
229

230
	for(s=src,d=dst;*s && (size_t)(d-dst)<maxlen;s++) {
231
		if((!ctrl_only || (uchar)*s < ' ') && (e=c_escape_char(*s))!=NULL) {
232
233
			strncpy(d,e,maxlen-(d-dst));
			d+=strlen(d);
234
		} else if((uchar)*s < ' ') {
235
			d += safe_snprintf(d, maxlen-(d-dst), "\\x%02X", *s);
236
		} else *d++=*s;
237
238
239
240
241
242
	}
	*d=0;

	return(dst);
}

243
244
245
246
247
248
249
250
251
252
253
254
255
/* Returns a byte count parsed from the 'str' argument, supporting power-of-2
 * short-hands (e.g. 'K' for kibibytes).
 * If 'unit' is specified (greater than 1), result is divided by this amount.
 * 
 * Moved from ini_file.c/parseBytes()
 */
int64_t DLLCALL parse_byte_count(const char* str, ulong unit)
{
	char*	p=NULL;
	double	bytes;

	bytes=strtod(str,&p);
	if(p!=NULL) {
256
		SKIP_WHITESPACE(p);
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
		switch(toupper(*p)) {
			case 'E':
				bytes*=1024;
				/* fall-through */
			case 'P':
				bytes*=1024;
				/* fall-through */
			case 'T':
				bytes*=1024;
				/* fall-through */
			case 'G':
				bytes*=1024;
				/* fall-through */
			case 'M':
				bytes*=1024;
				/* fall-through */
			case 'K':
				bytes*=1024;
				break;
		}
	}
	return((int64_t)(unit>1 ? (bytes/unit):bytes));
}

281
282
283
284
285
286
static const double one_tebibyte = 1024.0*1024.0*1024.0*1024.0;
static const double one_gibibyte = 1024.0*1024.0*1024.0;
static const double one_mebibyte = 1024.0*1024.0;
static const double one_kibibyte = 1024.0;

/* Convert an exact byte count to a string with a floating point value
287
288
289
290
291
   and a single letter multiplier/suffix.
   For values evenly divisible by 1024, no suffix otherwise.
*/
char* DLLCALL byte_count_to_str(int64_t bytes, char* str, size_t size)
{
292
293
294
295
296
297
298
299
	if(bytes && fmod((double)bytes,one_tebibyte)==0)
		safe_snprintf(str, size, "%gT",bytes/one_tebibyte);
	else if(bytes && fmod((double)bytes,one_gibibyte)==0)
		safe_snprintf(str, size, "%gG",bytes/one_gibibyte);
	else if(bytes && fmod((double)bytes,one_mebibyte)==0)
		safe_snprintf(str, size, "%gM",bytes/one_mebibyte);
	else if(bytes && fmod((double)bytes,one_kibibyte)==0)
		safe_snprintf(str, size, "%gK",bytes/one_kibibyte);
300
301
302
303
304
305
	else
		safe_snprintf(str, size, "%"PRIi64, bytes);

	return str;
}

306
307
308
309
310
/* Convert a rounded byte count to a string with a floating point value
   with a single decimal place and a single letter multiplier/suffix.
   This function also appends 'B' for exact byte counts (< 1024).
   'unit' is the smallest divisor used.
*/
311
char* DLLCALL byte_estimate_to_str(int64_t bytes, char* str, size_t size, ulong unit, int precision)
312
313
{
	if(bytes >= one_tebibyte)
314
		safe_snprintf(str, size, "%1.*fT", precision, bytes/one_tebibyte);
315
	else if(bytes >= one_gibibyte || unit == one_gibibyte)
316
		safe_snprintf(str, size, "%1.*fG", precision, bytes/one_gibibyte);
317
	else if(bytes >= one_mebibyte || unit == one_mebibyte)
318
		safe_snprintf(str, size, "%1.*fM", precision, bytes/one_mebibyte);
319
	else if(bytes >= one_kibibyte || unit == one_kibibyte)
320
		safe_snprintf(str, size, "%1.*fK", precision, bytes/one_kibibyte);
321
322
323
324
325
326
327
	else
		safe_snprintf(str, size, "%"PRIi64"B", bytes);

	return str;
}


328
329
/* Parse a duration string, default unit is in seconds */
/* (Y)ears, (W)eeks, (D)ays, (H)ours, and (M)inutes */
deuce's avatar
deuce committed
330
/* suffixes/multipliers are supported. */
331
332
333
334
335
336
337
338
/* Return value is in seconds */
double DLLCALL parse_duration(const char* str)
{
	char*	p=NULL;
	double	t;

	t=strtod(str,&p);
	if(p!=NULL) {
339
		SKIP_WHITESPACE(p);
340
341
342
343
344
345
346
347
348
349
350
		switch(toupper(*p)) {
			case 'Y':	t*=365.0*24.0*60.0*60.0; break;
			case 'W':	t*=  7.0*24.0*60.0*60.0; break;
			case 'D':	t*=		 24.0*60.0*60.0; break;
			case 'H':	t*=			  60.0*60.0; break;
			case 'M':	t*=				   60.0; break;
		}
	}
	return t;
}

351
352
/* Convert a duration (in seconds) to a string
 * with a single letter multiplier/suffix: 
353
 * (Y)ears, (W)eeks, (D)ays, (H)ours, (M)inutes, or (S)econds
354
355
356
 */
char* DLLCALL duration_to_str(double value, char* str, size_t size)
{
357
	if(value && fmod(value,365.0*24.0*60.0*60.0)==0)
358
		safe_snprintf(str, size, "%gY",value/(365.0*24.0*60.0*60.0));
359
	else if(value && fmod(value,7.0*24.0*60.0*60.0)==0)
360
		safe_snprintf(str, size, "%gW",value/(7.0*24.0*60.0*60.0));
361
	else if(value && fmod(value,24.0*60.0*60.0)==0)
362
		safe_snprintf(str, size, "%gD",value/(24.0*60.0*60.0));
363
	else if(value && fmod(value,60.0*60.0)==0)
364
		safe_snprintf(str, size, "%gH",value/(60.0*60.0));
365
	else if(value && fmod(value,60.0)==0)
366
367
368
369
370
371
372
		safe_snprintf(str, size, "%gM",value/60.0);
	else
		safe_snprintf(str, size, "%gS",value);

	return str;
}

373
374
375
376
377
378
/* Convert a duration (in seconds) to a verbose string
 * with a word clarifier / modifier: 
 * year[s], week[s], day[s], hour[s], minute[s] or second[s]
 */
char* DLLCALL duration_to_vstr(double value, char* str, size_t size)
{
379
	if(value && fmod(value,365.0*24.0*60.0*60.0)==0) {
380
		value /= (365.0*24.0*60.0*60.0);
381
		safe_snprintf(str, size, "%g year%s", value, value == 1 ? "":"s");
382
	}
383
	else if(value && fmod(value,7.0*24.0*60.0*60.0)==0) {
384
		value /= (7.0*24.0*60.0*60.0);
385
		safe_snprintf(str, size, "%g week%s", value, value == 1 ? "":"s");
386
	}
387
	else if(value && fmod(value,24.0*60.0*60.0)==0) {
388
		value /= (24.0*60.0*60.0);
389
		safe_snprintf(str, size, "%g day%s", value, value == 1 ? "":"s");
390
	}
391
	else if(value && fmod(value,60.0*60.0)==0) {
392
		value /= (60.0*60.0);
393
		safe_snprintf(str, size, "%g hour%s", value, value == 1 ? "":"s");
394
	}
395
	else if(value && fmod(value,60.0)==0) {
396
		value /= 60.0;
397
		safe_snprintf(str, size, "%g minute%s", value, value == 1 ? "":"s");
398
399
	}
	else
400
		safe_snprintf(str, size, "%g second%s", value, value == 1 ? "":"s");
401
402
403
404
405

	return str;
}


406
/****************************************************************************/
407
408
/* Convert ASCIIZ string to upper case										*/
/****************************************************************************/
409
#if defined(__unix__)
410
char* DLLCALL strupr(char* str)
411
412
413
414
415
416
417
418
419
420
421
422
{
	char*	p=str;

	while(*p) {
		*p=toupper(*p);
		p++;
	}
	return(str);
}
/****************************************************************************/
/* Convert ASCIIZ string to lower case										*/
/****************************************************************************/
423
char* DLLCALL strlwr(char* str)
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
{
	char*	p=str;

	while(*p) {
		*p=tolower(*p);
		p++;
	}
	return(str);
}
/****************************************************************************/
/* Reverse characters of a string (provided by amcleod)						*/
/****************************************************************************/
char* strrev(char* str)
{
    char t, *i=str, *j=str+strlen(str);

    while (i<j) {
        t=*i; *(i++)=*(--j); *j=t;
    }
    return str;
}
#endif

447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
#if !defined(__unix__)

/****************************************************************************/
/* Implementations of the recursive (thread-safe) version of strtok			*/
/* Thanks to Apache Portable Runtime (APR)									*/
/****************************************************************************/
char* DLLCALL strtok_r(char *str, const char *delim, char **last)
{
    char* token;

    if (str==NULL)      /* subsequent call */
        str = *last;    /* start where we left off */

    /* skip characters in delimiter (will terminate at '\0') */
    while(*str && strchr(delim, *str))
        ++str;

464
465
    if(!*str) {         /* no more tokens */
		*last = str;
466
        return NULL;
467
	}
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487

    token = str;

    /* skip valid token characters to terminate token and
     * prepare for the next call (will terminate at '\0)
     */
    *last = token + 1;
    while(**last && !strchr(delim, **last))
        ++*last;

    if (**last) {
        **last = '\0';
        ++*last;
    }

    return token;
}

#endif

rswindell's avatar
rswindell committed
488
489
490
/****************************************************************************/
/* Initialize (seed) the random number generator							*/
/****************************************************************************/
491
void DLLCALL xp_randomize(void)
rswindell's avatar
rswindell committed
492
{
493
#if !(defined(HAS_SRANDOMDEV_FUNC) && defined(HAS_RANDOM_FUNC))
rswindell's avatar
rswindell committed
494
	unsigned seed=~0;
495
#if defined(HAS_DEV_URANDOM) && defined(URANDOM_DEV)
496
497
	int		rf;
#endif
498
#endif
rswindell's avatar
rswindell committed
499

500
501
502
#if defined(HAS_SRANDOMDEV_FUNC) && defined(HAS_RANDOM_FUNC)
	srandomdev();
	return;
503
#else
504
505

#if defined(HAS_DEV_URANDOM) && defined(URANDOM_DEV)
506
	if((rf=open(URANDOM_DEV, O_RDONLY))!=-1) {
rswindell's avatar
rswindell committed
507
508
509
		read(rf, &seed, sizeof(seed));
		close(rf);
	}
510
511
512
513
	else {
#endif
		unsigned curtime	= (unsigned)time(NULL);
		unsigned process_id = (unsigned)GetCurrentProcessId();
rswindell's avatar
rswindell committed
514

515
		seed = curtime ^ BYTE_SWAP_INT(process_id);
rswindell's avatar
rswindell committed
516

517
518
519
		#if defined(_WIN32) || defined(GetCurrentThreadId)
			seed ^= (unsigned)GetCurrentThreadId();
		#endif
rswindell's avatar
rswindell committed
520

521
522
#if defined(HAS_DEV_URANDOM) && defined(URANDOM_DEV)
	}
rswindell's avatar
rswindell committed
523
524
#endif

525
526
527
#ifdef HAS_RANDOM_FUNC
 	srandom(seed);
#else
rswindell's avatar
rswindell committed
528
 	srand(seed);
529
#endif
530
#endif
rswindell's avatar
rswindell committed
531
532
}

533
534
535
/****************************************************************************/
/* Return random number between 0 and n-1									*/
/****************************************************************************/
536
long DLLCALL xp_random(int n)
537
{
538
#ifdef HAS_RANDOM_FUNC
539
540
	long			curr;
	unsigned long	limit;
541

542
543
	if(n<2)
		return(0);
544

545
	limit = ((1UL<<((sizeof(long)*CHAR_BIT)-1)) / n) * n - 1;
546

547
548
	while(1) {
		curr=random();
549
		if(curr <= limit)
550
551
			return(curr % n);
	}
552
#else
553
554
	double f=0;
	int ret;
555
556
557

	if(n<2)
		return(0);
558
	do {
559
		f=(double)rand()/(double)(RAND_MAX+1);
560
561
		ret=(int)(n*f);
	} while(ret==n);
562

563
	return(ret);
564
#endif
565
566
}

567
568
569
570
/****************************************************************************/
/* Return ASCII string representation of ulong								*/
/* There may be a native GNU C Library function to this...					*/
/****************************************************************************/
rswindell's avatar
rswindell committed
571
#if !defined(_MSC_VER) && !defined(__BORLANDC__) && !defined(__WATCOMC__)
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
char* DLLCALL ultoa(ulong val, char* str, int radix)
{
	switch(radix) {
		case 8:
			sprintf(str,"%lo",val);
			break;
		case 10:
			sprintf(str,"%lu",val);
			break;
		case 16:
			sprintf(str,"%lx",val);
			break;
		default:
			sprintf(str,"bad radix: %d",radix);
			break;
	}
	return(str);
}
#endif

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
/****************************************************************************/
/* Write the version details of the current operating system into str		*/
/****************************************************************************/
char* DLLCALL os_version(char *str)
{
#if defined(__OS2__) && defined(__BORLANDC__)

	sprintf(str,"OS/2 %u.%u (%u.%u)",_osmajor/10,_osminor/10,_osmajor,_osminor);

#elif defined(_WIN32)

	/* Windows Version */
	char*			winflavor="";
	OSVERSIONINFO	winver;

	winver.dwOSVersionInfoSize=sizeof(winver);
	GetVersionEx(&winver);

	switch(winver.dwPlatformId) {
		case VER_PLATFORM_WIN32_NT:
			winflavor="NT ";
			break;
		case VER_PLATFORM_WIN32s:
			winflavor="Win32s ";
			break;
		case VER_PLATFORM_WIN32_WINDOWS:
			winver.dwBuildNumber&=0xffff;
			break;
	}

622
623
624
625
626
627
628
629
630
631
632
	/* Work-around Microsoft Windows 8.1 stupidity where GetVersionEx() lies about the current OS version */
	if(winver.dwMajorVersion == 6 && winver.dwMinorVersion == 2) {
		WKSTA_INFO_100* wksta_info;
		if(NetWkstaGetInfo(NULL, 100, (LPBYTE*)&wksta_info) == NERR_Success) {
			winver.dwMajorVersion = wksta_info->wki100_ver_major;
			winver.dwMinorVersion = wksta_info->wki100_ver_minor;
			winver.dwBuildNumber = 0;
		}
	}

	sprintf(str,"Windows %sVersion %u.%u"
633
			,winflavor
634
635
636
637
638
			,winver.dwMajorVersion, winver.dwMinorVersion);
	if(winver.dwBuildNumber)
		sprintf(str+strlen(str), " (Build %u)", winver.dwBuildNumber);
	if(winver.szCSDVersion[0])
		sprintf(str+strlen(str), " %s", winver.szCSDVersion);
639
640
641
642
643

#elif defined(__unix__)

	struct utsname unixver;

644
	if(uname(&unixver)<0)
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
		sprintf(str,"Unix (uname errno: %d)",errno);
	else
		sprintf(str,"%s %s %s"
			,unixver.sysname	/* e.g. "Linux" */
			,unixver.release	/* e.g. "2.2.14-5.0" */
			,unixver.machine	/* e.g. "i586" */
			);

#else	/* DOS */

	sprintf(str,"DOS %u.%02u",_osmajor,_osminor);

#endif

	return(str);
}
661

662
663
664
665
char* DLLCALL os_cmdshell(void)
{
	char*	shell=getenv(OS_CMD_SHELL_ENV_VAR);

deuce's avatar
deuce committed
666
#if defined(__unix__)
667
668
669
670
671
672
673
674
675
676
677
	if(shell==NULL)
#ifdef _PATH_BSHELL
		shell=_PATH_BSHELL;
#else
		shell="/bin/sh";
#endif
#endif

	return(shell);
}

rswindell's avatar
rswindell committed
678
679
680
/****************************************************************/
/* Microsoft (DOS/Win32) real-time system clock implementation.	*/
/****************************************************************/
681
682
683
684
685
686
687
#ifdef __unix__
clock_t DLLCALL msclock(void)
{
	long long int usecs;
	struct timeval tv;
	if(gettimeofday(&tv,NULL)==1)
		return(-1);
688
	usecs=((long long int)tv.tv_sec)*((long long int)1000000)+tv.tv_usec;
689
690
691
	return((clock_t)(usecs/(1000000/MSCLOCKS_PER_SEC)));
}
#endif
692

693
694
695
696
697
698
699
700
701
/****************************************************************************/
/* Skips all white-space chars at beginning of 'str'						*/
/****************************************************************************/
char* DLLCALL skipsp(char* str)
{
	SKIP_WHITESPACE(str);
	return(str);
}

702
703
704
705
706
/****************************************************************************/
/* Truncates all white-space chars off end of 'str'	(needed by STRERRROR)	*/
/****************************************************************************/
char* DLLCALL truncsp(char* str)
{
707
	size_t i,len;
708

709
710
	if(str!=NULL) {
		i=len=strlen(str);
711
		while(i && isspace((unsigned char)str[i-1]))
712
713
714
715
			i--;
		if(i!=len)
			str[i]=0;	/* truncate */
	}
716
717
718
	return(str);
}

719
/****************************************************************************/
720
721
/* Truncates common white-space chars off end of \n-terminated lines in		*/
/* 'dst' and retains original line break format	(e.g. \r\n or \n)			*/
722
723
724
725
726
727
728
729
730
731
732
/****************************************************************************/
char* DLLCALL truncsp_lines(char* dst)
{
	char* sp;
	char* dp;
	char* src;

	if((src=strdup(dst))==NULL)
		return(dst);

	for(sp=src, dp=dst; *sp!=0; sp++) {
733
		if(*sp=='\n') {
734
			while(dp!=dst
735
				&& (*(dp-1)==' ' || *(dp-1)=='\t' || *(dp-1)=='\r'))
736
					dp--;
737
738
739
			if(sp!=src && *(sp-1)=='\r')
				*(dp++)='\r';
		}
740
741
742
743
744
745
746
747
		*(dp++)=*sp;
	}
	*dp=0;

	free(src);
	return(dst);
}

748
749
750
751
752
/****************************************************************************/
/* Truncates carriage-return and line-feed chars off end of 'str'			*/
/****************************************************************************/
char* DLLCALL truncnl(char* str)
{
753
	size_t i,len;
754

755
756
	if(str!=NULL) {
		i=len=strlen(str);
757
		while(i && (str[i-1]=='\r' || str[i-1]=='\n'))
758
759
760
761
			i--;
		if(i!=len)
			str[i]=0;	/* truncate */
	}
762
763
	return(str);
}
764
765
766
767
768
769
770
771

/****************************************************************************/
/* Return errno from the proper C Library implementation					*/
/* (single/multi-threaded)													*/
/****************************************************************************/
int DLLCALL	get_errno(void)
{
	return(errno);
772
}
773
774
775
776
777

/****************************************************************************/
/* Returns the current value of the systems best timer (in SECONDS)			*/
/* Any value < 0 indicates an error											*/
/****************************************************************************/
778
long double	DLLCALL	xp_timer(void)
779
{
780
	long double ret;
781
#if defined(__unix__)
782
783
784
785
786
787
	struct timeval tv;
	if(gettimeofday(&tv,NULL)==1)
		return(-1);
	ret=tv.tv_usec;
	ret /= 1000000;
	ret += tv.tv_sec;
788
#elif defined(_WIN32)
789
	LARGE_INTEGER	freq;
deuce's avatar
deuce committed
790
791
	LARGE_INTEGER	tick;
	if(QueryPerformanceFrequency(&freq) && QueryPerformanceCounter(&tick)) {
792
#if 0
793
794
		ret=((long double)tick.HighPart*4294967296)+((long double)tick.LowPart);
		ret /= ((long double)freq.HighPart*4294967296)+((long double)freq.LowPart);
795
#else
796
		/* In MSVC, a long double does NOT have 19 decimals of precision */
797
		ret=(((long double)(tick.QuadPart%freq.QuadPart))/freq.QuadPart);
798
		ret+=tick.QuadPart/freq.QuadPart;
799
#endif
800
801
802
803
804
805
	}
	else {
		ret=GetTickCount();
		ret /= 1000;
	}
#else
806
	ret=time(NULL);	/* Weak implementation */
807
808
809
#endif
	return(ret);
}
810
811
812
813
814
815
816
817
818
819
820
821

/* Returns TRUE if specified process is running */
BOOL DLLCALL check_pid(pid_t pid)
{
#if defined(__unix__)
	return(kill(pid,0)==0);
#elif defined(_WIN32)
	HANDLE	h;
	BOOL	result=FALSE;

	if((h=OpenProcess(PROCESS_QUERY_INFORMATION,/* inheritable: */FALSE, pid)) != NULL) {
		DWORD	code;
822
		if(GetExitCodeProcess(h,(PDWORD)&code)==TRUE && code==STILL_ACTIVE)
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
			result=TRUE;
		CloseHandle(h);
	}
	return result;
#else
	return FALSE;	/* Need check_pid() definition! */
#endif
}

/* Terminate (unconditionally) the specified process */
BOOL DLLCALL terminate_pid(pid_t pid)
{
#if defined(__unix__)
	return(kill(pid,SIGKILL)==0);
#elif defined(_WIN32)
	HANDLE	h;
	BOOL	result=FALSE;

	if((h=OpenProcess(PROCESS_TERMINATE,/* inheritable: */FALSE, pid)) != NULL) {
		if(TerminateProcess(h,255))
			result=TRUE;
		CloseHandle(h);
	}
	return result;
#else
	return FALSE;	/* Need check_pid() definition! */
#endif
}