-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathutil.c
1559 lines (1345 loc) · 38.4 KB
/
util.c
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
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
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
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/***************************************************************************
* Copyright (C) 2018 by John D. Robertson *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
/***************************************************************************
util.h - description
Common utility routines needed by most c and c++ applications.
-------------------
begin : Fri Oct 19 10:09:38 EDT 2018
email : [email protected]
***************************************************************************/
#define _GNU_SOURCE
#ifdef __MINGW32__
# include <winsock2.h>
#else
# include <arpa/inet.h>
# include <netdb.h>
# include <netinet/in.h>
# include <sys/poll.h>
# include <sys/socket.h>
# include <sys/wait.h>
#endif // __MINGW32__
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "ez_libc.h"
#include "ez_libpthread.h"
#include "util.h"
#define MSGBUF_INIT_SZ 1024
/*=========================================================*/
/*================ Forward declarations ===================*/
/*=========================================================*/
static void dflt_eprintf_line (const char *msg);
#ifdef __MINGW32__
static size_t fix_mingw_strftime(char *s, size_t max, const char *format, const struct tm *tm);
#endif // __MINGW32__
/*=========================================================*/
/*======= Static data for all threads =====================*/
/*=========================================================*/
static struct {
/* Members for eprintf() */
struct {
eprintf_line_f prt_f;
STR fmt_sb,
msg_sb;
pthread_mutex_t mtx;
} epr;
} S = {
.epr= {
.prt_f= dflt_eprintf_line,
.mtx= PTHREAD_MUTEX_INITIALIZER
}
};
/* Always initialize struct tm to this before
* using, or you will get unpredicatable results.
* This quirk is a pisser!
*/
const struct tm TM_INITIAL = {
.tm_isdst= -1
/* The rest of the bits are, of course, cleared */
};
/*=========================================================*/
/*======= eprintf() stuff =================================*/
/*=========================================================*/
static void
dflt_eprintf_line (const char *msg)
/***************************************************************
* default line printf()'ing function for eprintf() and friends.
*/
{
ez_fputs(msg, stderr);
ez_fputc ('\n', stderr);
ez_fflush (stderr);
}
eprintf_line_f
set_eprintf_line (eprintf_line_f newFunc)
/****************************************************
* Set the global eprintf line vprintf()'ing function.
*/
{
ez_pthread_mutex_lock(&S.epr.mtx);
eprintf_line_f rtn= S.epr.prt_f;
S.epr.prt_f= newFunc;
ez_pthread_mutex_unlock(&S.epr.mtx);
return rtn;
}
/* Function to print out an error message. Usualy called by eprintf() macro. */
void _eprintf(
#ifdef DEBUG
const char* filename,
int lineno,
const char *func,
#endif
const char *fmt,
...
)
/*********************************************************************************
* Function to simplify printing error messages.
*/
{
va_list args;
ez_pthread_mutex_lock(&S.epr.mtx);
STR_sinit(&S.epr.fmt_sb, MSGBUF_INIT_SZ);
STR_sinit(&S.epr.msg_sb, MSGBUF_INIT_SZ);
#ifdef DEBUG
/* Put the filename, lineno, and function name into a new format string */
STR_sprintf(&S.epr.fmt_sb, "%s line %d, %s(): %s", filename, lineno, func, fmt);
#else
STR_append(&S.epr.fmt_sb, fmt, -1);
#endif
va_start(args, fmt);
STR_vsprintf(&S.epr.msg_sb, STR_str(&S.epr.fmt_sb), args);
va_end(args);
/* Pass on fully formed message to print function */
(* S.epr.prt_f) (STR_str(&S.epr.msg_sb));
ez_pthread_mutex_unlock(&S.epr.mtx);
}
/* Function to print out an error message. Usualy called by sys_eprintf() macro. */
void _sys_eprintf(
const char* (*strerror_f)(int errnum),
#ifdef DEBUG
const char* filename,
int lineno,
const char *func,
#endif
const char *fmt,
...
)
/*********************************************************************************
* Function to simplify printing error messages.
*/
{
va_list args;
ez_pthread_mutex_lock(&S.epr.mtx);
STR_sinit(&S.epr.fmt_sb, MSGBUF_INIT_SZ);
STR_sinit(&S.epr.msg_sb, MSGBUF_INIT_SZ);
/* Put the filename, lineno, and function name into a new format string */
#ifdef DEBUG
STR_sprintf(&S.epr.fmt_sb, "%s line %d, %s(): %s [ %s ]", filename, lineno, func, fmt, (*strerror_f)(errno));
#else
STR_sprintf(&S.epr.fmt_sb, "%s [ %s ]", fmt, (*strerror_f)(errno));
#endif
va_start(args, fmt);
STR_vsprintf(&S.epr.msg_sb, STR_str(&S.epr.fmt_sb), args);
va_end(args);
/* Pass on fully formed message to print function */
(* S.epr.prt_f) (STR_str(&S.epr.msg_sb));
ez_pthread_mutex_unlock(&S.epr.mtx);
}
/*=========================================================*/
/*======= Other functions =================================*/
/*=========================================================*/
int64_t
timespec2ms(const struct timespec *ts)
/**********************************************************************
* Convert a timespec structure to integer milliseconds.
*/
{
return ts->tv_sec*1000 + ts->tv_nsec/1000000;
}
struct timespec*
ms2timespec(struct timespec *rtnBuf, int64_t ms)
/**********************************************************************
* Load up a timespec struct given number of milliseconds.
*/
{
rtnBuf->tv_sec= ms/1000;
rtnBuf->tv_nsec= (ms%1000)*1000000;
return rtnBuf;
}
const char*
bits2str(int64_t bits, const struct bitTuple *btArr)
/**********************************************************************
* Returns a null terminated buffer with OR'd set bits
* printed out.
*/
{
/* Rotating buffers so this can be used multiple times as arg to printf() */
#define N_BUFS 10
static _Thread_local char bufArr[N_BUFS][1024];
static _Thread_local unsigned count;
const struct bitTuple *t;
unsigned offset;
char *buf= bufArr[++count%N_BUFS];
/* Need this in case no bits are set */
buf[0]= '\0';
for(offset= 0, t= btArr; t->name; ++t) {
if(!(bits & t->bit)) continue;
if(offset) offset += sprintf(buf+offset, "|");
offset += sprintf(buf+offset, "%s", t->name);
}
return buf;
#undef N_BUFS
}
static const struct bitTuple*
findBitTuple(const char *symbol, const struct bitTuple *btArr)
/**********************************************************************
* brute force search for matching symbol.
*/
{
const struct bitTuple *bt;
for(bt= btArr; bt->name; ++bt) {
if(!strcmp(symbol, bt->name)) return bt;
}
return NULL;
}
int
str2bits(int64_t *rtnBuf, const char *str, const struct bitTuple *btArr)
/**********************************************************************
* Convert all OR'd symbolic bits in str into the return value.
*
* RETURNS: 0 for success, -1 for error.
*/
{
*rtnBuf= 0;
if(!strlen(str)) return 0;
int rtn= -1;
char symbolArr[20][60];
memset(symbolArr, 0, sizeof(symbolArr));
int rc= sscanf(str,
"%59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
"| %59[^|] "
,symbolArr[0]
,symbolArr[1]
,symbolArr[2]
,symbolArr[3]
,symbolArr[4]
,symbolArr[5]
,symbolArr[6]
,symbolArr[7]
,symbolArr[8]
,symbolArr[9]
,symbolArr[10]
,symbolArr[11]
,symbolArr[12]
,symbolArr[13]
,symbolArr[14]
,symbolArr[15]
,symbolArr[16]
,symbolArr[17]
,symbolArr[18]
,symbolArr[19]
);
if(-1 == rc) {
sys_eprintf("ERROR: sscanf() failed");
goto abort;
}
for(int i= 0; i < rc; ++i) {
const struct bitTuple *bt= findBitTuple(symbolArr[i], btArr);
if(!bt) {
eprintf("ERROR: \"%s\" not found in bitTuple array.", symbolArr[i]);
goto abort;
}
*rtnBuf |= bt->bit;
}
rtn= 0;
abort:
return rtn;
}
void
printBuffer(FILE *fh, const char *buf)
/************************************************************************************
* Print out the supplied buffer, replacing unprintable characters with the corresponding
* hex value in pointy brackets, e.g. <0x01>
*/
{
const char *pc;
/* Print something for each character */
for(pc= buf; pc && *pc; ++pc) {
if(isprint(*pc)) { /* Character is printable */
fputc(*pc, fh);
} else { /* Character is NOT printable, show hex number instead */
fprintf(fh, "<0x%02X>", *pc);
}
}
}
int64_t
clock_gettime_ms(clockid_t whichClock)
/**********************************************************************
* Returns current value of whichClock in milliseconds, avoiding the
* need for struct timespec.
* See man clock_gettime for more information.
*/
{
struct timespec ts;
if(-1 == clock_gettime(whichClock, &ts)) {
sys_eprintf("\tclock_gettime() failed");
abort();
}
return timespec2ms(&ts);
}
const char*
gmt_strftime (const time_t *pWhen, const char *fmt)
/***************************************************
* Get local time in a static string buffer
*/
{
/* Rotating buffers so this can be used multiple times as arg to printf() */
#define N_BUFS 5
#define BUF_SZ 64
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf= bufArr[++count%N_BUFS];
/* Print the local time to a buffer */
struct tm *tm= gmtime (pWhen);
if (!tm) {
sys_eprintf ("gmtime() failed");
return NULL;
}
#ifdef __MINGW32__
if (!fix_mingw_strftime (buf, BUF_SZ-1, fmt, tm)) {
sys_eprintf ("fix_mingw_strftime(\"%s\") failed", fmt);
return NULL;
}
#else
if (!strftime (buf, BUF_SZ-1, fmt, tm)) {
sys_eprintf ("strftime(\"%s\") failed", fmt);
return NULL;
}
#endif
return buf;
#undef BUF_SZ
#undef N_BUFS
}
const char*
local_strftime (const time_t *pWhen, const char *fmt)
/***************************************************
* Get local time in a static string buffer
*/
{
/* Rotating buffers so this can be used multiple times as arg to printf() */
#define N_BUFS 5
#define BUF_SZ 64
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf= bufArr[++count%N_BUFS];
/* Print the local time to a buffer */
struct tm *tm= localtime (pWhen);
if (!tm) {
sys_eprintf ("localtime() failed");
return NULL;
}
#ifdef __MINGW32__
if (!fix_mingw_strftime (buf, BUF_SZ-1, fmt, tm)) {
sys_eprintf ("fix_mingw_strftime(\"%s\") failed", fmt);
return NULL;
}
#else
if (!strftime (buf, BUF_SZ-1, fmt, tm)) {
sys_eprintf ("strftime(\"%s\") failed", fmt);
return NULL;
}
#endif // __MINGW32__
return buf;
#undef BUF_SZ
#undef N_BUFS
}
const char*
strbits(int64_t bits, unsigned nBytes)
/**********************************************************************
* Convert a bits to a null terminated string of '1' and '0' characters.
* Uses rotating per-thread static buffer for return, so it is safe
* to call multiple times in a single printf()ish invocation.
*
* bits: bit field of interest.
* nBytes: Number of bytes to consider.
*
* RETURNS:
* null terminated buffer with a string representing bits as '0' or '1'
*/
{
/* Rotating buffers so this can be used multiple times as arg to printf() */
#define N_BUFS 8
#define BUF_SZ 65
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf= bufArr[++count%N_BUFS];
unsigned pos= 0;
/* order bits from MSbit -> LSbit */
for(unsigned n= nBytes; n--;) {
unsigned char byte= (bits >>(8*n)) << 56 >> 56;
for(unsigned bit= 7; bit--;) {
buf[pos]= byte & 1<<bit ? '1' : '0';
++pos;
}
}
buf[pos]= '\0';
return buf;
#undef BUF_SZ
#undef N_BUFS
}
int
fd_setBLOCKING (int fd, int tf)
/***************************************************
* Change blocking mode of file descriptor based
* on the logical value of tf (true-false).
*/
{
int rtn= -1;
#ifdef __MINGW32__
u_long iMode= !tf;
int rc= ioctlsocket(fd, FIONBIO, &iMode);
if(SOCKET_ERROR == rc) {
assert(0);
goto abort;
}
rtn= 0;
abort:
return rtn;
#else
int fcntlFlgs;
/* This sets 'status' flags */
fcntlFlgs= fcntl(fd, F_GETFL);
if(-1 == fcntlFlgs)
goto abort;
if(tf) {
/* Clear non-blocking flag */
if(fcntl(fd, F_SETFL, fcntlFlgs & ~O_NONBLOCK))
goto abort;
} else {
/* Set non-blocking flag */
if(fcntl(fd, F_SETFL, fcntlFlgs | O_NONBLOCK))
goto abort;
}
rtn= 0;
abort:
if(rtn)
sys_eprintf("ERRO: fcntl() failed");
return rtn;
#endif
}
int
fd_setNONBLOCK (int fd)
/***************************************************
* Set a file descriptor to non-blocking mode.
*/
{
int rtn= -1;
#ifdef __MINGW32__
static u_long iMode= 1;
int rc= ioctlsocket(fd, FIONBIO, &iMode);
assert(SOCKET_ERROR != rc);
#else
/* Set for non-blocking I/O */
int fcntlFlgs;
/* This sets 'status' flags */
if((fcntlFlgs= fcntl(fd, F_GETFL)) == -1 ||
fcntl(fd, F_SETFL, fcntlFlgs | O_NONBLOCK) == -1 ||
(fcntlFlgs= fcntl(fd, F_GETFD)) == -1 ||
fcntl(fd, F_SETFD, fcntlFlgs | FD_CLOEXEC) == -1) {
sys_eprintf("fcntl() failed");
abort();
}
/* This sets 'descriptor' flags */
fcntlFlgs= fcntl(fd, F_GETFD);
if(fcntl(fd, F_SETFD, fcntlFlgs | FD_CLOEXEC) < 0) {
sys_eprintf("fcntl() failed");
abort();
}
#endif
rtn= 0;
abort:
return rtn;
}
const struct enumTuple*
str2enum(const char *str, const struct enumTuple *etArr)
/**********************************************************************
* Try to match str with an entry in the enumTupeArr.
*/
{
const struct enumTuple *et;
for(et= etArr; et->name; ++et) {
if(!strcmp(str, et->name)) return et;
}
return NULL;
}
const char*
enum2str(int enumVal, const struct enumTuple *etArr)
/**********************************************************************
* Return a the string representing enumVal, or NULL.
*/
{
const struct enumTuple *et;
for(et= etArr; et->name; ++et) {
if(enumVal == et->enumVal) return et->name;
}
return NULL;
}
int
sleep_ms(unsigned msec)
/***************************************************
* Sleep for the specified number of milliseconds.
*/
{
struct timespec ts;
ts.tv_sec= msec/1000;
ts.tv_nsec= (msec%1000)*1000000;
return nanosleep(&ts, NULL);
}
int
tcp_connect(const char *hostName, unsigned short port)
/***************************************************
* Blocking TCP connect for convenience.
*/
{
int rtn= -1, sock;
struct hostent *hp;
struct sockaddr_in sin;
sock = socket(AF_INET, SOCK_STREAM, 0);
if(-1 == sock) {
sys_eprintf("ERROR: socket() failed.");
goto abort;
}
// Initialize socket address structure
hp = gethostbyname(hostName);
if(!hp) {
sys_eprintf("ERROR: gethostbyname(\"%s\") failed.", hostName);
goto abort;
}
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
memcpy(&(sin.sin_addr.s_addr), hp->h_addr, hp->h_length);
int err= connect(sock, (struct sockaddr *)&sin, sizeof(sin));
if(-1 == err) {
sys_eprintf("ERROR: connect(%s:%hu) failed.", hostName, port);
goto abort;
}
rtn= sock;
abort:
if(-1 == rtn) {
if(-1 != sock) {
#ifdef __MINGW32__
closesocket(sock);
#else
ez_close(sock);
#endif
}
}
return rtn;
}
int
tm_normalize(struct tm *buf)
/***************************************************
* Normalize buf so member values are corrected.
* Returns 0 for success, -1 for failure.
*/
{
buf->tm_isdst= -1;
time_t tt= mktime(buf);
if(!localtime_r(&tt, buf)) {
sys_eprintf ("localtime() failed");
return -1;
}
return 0;
}
time_t
tv2sec(const struct timeval *h_when)
/***************************************************
* Return the value of h_when in calendar seconds, rounded
* to the closest second.
*/
{
return h_when->tv_sec + (h_when->tv_usec >= 500000 ? 1 : 0);
}
unsigned
tv2tod_ms(const struct timeval *h_when)
/***************************************************
* Return the Time of Day in milliseconds given h_when.
*/
{
unsigned rtn= 0;
/* Get the local time breakdown in a buffer */
struct tm tm_when= TM_INITIAL;
time_t secs= h_when->tv_sec;
if(!localtime_r(&secs, &tm_when)) {
sys_eprintf ("localtime_r() failed");
abort();
}
rtn = tm_when.tm_hour * 3600*1000;
rtn += tm_when.tm_min * 60*1000;
rtn += tm_when.tm_sec * 1000;
rtn += lround(h_when->tv_usec/1000.);
return rtn;
}
#ifdef __MINGW32__
/* MinGW doesn't have localtime_r(), but localtime() is thread safe. */
struct tm*
localtime_r(const time_t *timep, struct tm *result)
{
struct tm *p= localtime(timep);
*result= *p;
return result;
}
struct tm*
gmtime_r(const time_t *timep, struct tm *result)
{
struct tm *p= gmtime(timep);
*result= *p;
return result;
}
char*
canonicalize_file_name(const char *path)
{
return _fullpath(NULL, path, PATH_MAX);
}
static int
days_from_civil(int y, int m, int d)
{
y -= m <= 2;
int era = y / 400;
int yoe = y - era * 400; // [0, 399]
int doy = (153 * (m + (m > 2 ? -3 : 9)) + 2) / 5 + d - 1; // [0, 365]
int doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; // [0, 146096]
return era * 146097 + doe - 719468;
}
time_t
timegm(struct tm const* t) // It does not modify broken-down time
{
int year = t->tm_year + 1900;
int month = t->tm_mon; // 0-11
if (month > 11)
{
year += month / 12;
month %= 12;
}
else if (month < 0)
{
int years_diff = (11 - month) / 12;
year -= years_diff;
month += 12 * years_diff;
}
int days_since_1970 = days_from_civil(year, month + 1, t->tm_mday);
return 60 * (60 * (24L * days_since_1970 + t->tm_hour) + t->tm_min) + t->tm_sec;
}
const char *strsignal(int sig)
{
const static struct enumTuple et_arr[]= {
{.name= "SIGINT", .enumVal= SIGINT },
{.name= "SIGILL", .enumVal= SIGILL},
{.name= "SIGABRT_COMPAT", .enumVal= SIGABRT_COMPAT},
{.name= "SIGFPE", .enumVal= SIGFPE},
{.name= "SIGSEGV", .enumVal= SIGSEGV},
{.name= "SIGTERM", .enumVal= SIGTERM},
{.name= "SIGBREAK", .enumVal= SIGBREAK},
{.name= "SIGABRT", .enumVal= SIGABRT},
{/* Terminating member */}
};
return enum2str(sig, et_arr);
}
/* Implementation for missing functionality */
int
mkstemps(char *template, int suffixlen)
{
/* Dump the suffix for now */
int tmpl_len= strlen(template);
char buf[tmpl_len+1];
snprintf(buf, sizeof(buf), "%.*s", tmpl_len - suffixlen, template);
/* Make a temporary file */
int fd= ez_mkstemp(buf);
/* If we get a good return, copy result back to template */
if(-1 != fd)
strncpy(template, buf, tmpl_len);
return fd;
}
static size_t
fix_mingw_strftime(char *s, size_t max, const char *format, const struct tm *tm)
/********************************************************************************
* mingw fails to implement some conversion specifications.
*/
{
static _Thread_local STR sb;
STR_sinit(&sb, 1024);
const char *c= format;
assert(*c && *(c+1));
/* Expand conversion specifiers to something that works */
while (*(c+1)) {
if('%' == *c && 'F' == *(c+1)) {
STR_append(&sb, "%Y-%m-%d", 8);
++c;
} else if('%' == *c && 'T' == *(c+1)) {
STR_append(&sb, "%H:%M:%S", 8);
++c;
} else {
STR_putc(&sb, *c);
}
++c;
}
STR_putc(&sb, *c);
return strftime (s, max, STR_str(&sb), tm);
}
#endif // __MINGW32__
int
secs2tod(const time_t *pFrom, int tod_sec)
/***************************************************
* Return the smallest number of seconds in the future
* remaining between from and tod_sec time-of-day, without
* respect to which day of the week/month/year.
*/
{
assert(0 <= tod_sec && (23*3600+59*60+59) >= tod_sec);
if(0 > tod_sec || (23*3600+59*60+59) < tod_sec) return -1;
/* Get the local time breakdown in a buffer */
struct tm tm_from= TM_INITIAL;
if(!localtime_r(pFrom, &tm_from)) {
sys_eprintf ("localtime_r() failed");
abort();
}
/* We'll look at today and tomorrow */
for(int day= 0; day <= 1; ++day) {
struct tm tm= tm_from;
tm.tm_mday += day;
if(-1 == tm_normalize(&tm)) assert(0);
tm.tm_hour= tod_sec / 3600;
tm.tm_min= (tod_sec % 3600) / 60;
tm.tm_sec= (tod_sec % 3600) % 60;
// time_t dptime= timelocal(&tm);
time_t dptime= mktime(&tm);
if(dptime > *pFrom) return (int)(dptime - *pFrom);
}
assert(0);
/* Can't find a time (should be impossible to get here) */
return -1;
}
const char*
indentStr(unsigned lvl, const char *pfix)
/***************************************************
* Return a string with lvl concatenated pfix strings.
*/
{
#define N_BUFS 10
#define BUF_SZ 128
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf= bufArr[++count%N_BUFS];
size_t len= strlen(pfix);
buf[0]= '\0';
for(unsigned i= 0; (i+1)*len < BUF_SZ && i < lvl; ++i) {
strncpy(buf+i*len, pfix, len+1);
}
return buf;
#undef BUF_SZ
#undef N_BUFS
}
int
regex_compile(regex_t *preg, const char *pattern, int cflags)
/***************************************************
* Regular expression compile with error reporting.
*/
{
int rc, rtn= -1;
rc= regcomp(preg, pattern, cflags);
if(rc) {
#define BUF_SZ 1024
char buf[BUF_SZ];
regerror(rc, preg, buf, BUF_SZ);
eprintf("ERROR: %s", buf);
goto abort;
#undef BUF_SZ
}
rtn= 0;
abort:
return rtn;
}
FILE*
pager_open(void)
/***************************************************
* popen() the caller's pager.
*/
{
char *cmd= getenv("PAGER");
if(!cmd)
cmd= "/bin/more";
return ez_popen(cmd, "w");
}
const char*
prefix_home(const char *fname)
/***************************************************
* return $HOME/fname in a static buffer.
*/
{
#define N_BUFS 4
#define BUF_SZ PATH_MAX+1
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf = bufArr[++count % N_BUFS];
const char *home_env= getenv("HOME");
if(home_env) {
snprintf(buf, BUF_SZ-1, "%s/%s", home_env, fname);
} else {
snprintf(buf, BUF_SZ-1, "%s", fname);
}
return buf;
#undef BUF_SZ
#undef N_BUFS
}
const char*
pthread_t_str(pthread_t tid)
/***************************************************
* return a hexidecimal representation of tid in
* a rotating static buffer.
*/
{
#define N_BUFS 10
#define BUF_SZ (sizeof(tid)*2+3)
static _Thread_local char bufArr[N_BUFS][BUF_SZ];
static _Thread_local unsigned count;
char *buf = bufArr[++count % N_BUFS];
strcpy(buf, "0x");
char *dst= buf+2;
unsigned i, byte;
size_t sz= sizeof(tid);
for(i= 0; i < sz; ++i) {
byte= *((unsigned char *)(&tid) + sz - i - 1);
dst += sprintf(dst, "%02x", byte);
}
*dst= '\0';
return buf;
#undef BUF_SZ
#undef N_BUFS
}