summaryrefslogtreecommitdiff
path: root/pcre-7.4/pcretest.c
blob: a222146e5e592b72f078679e4ea2e5b815e1eafb (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
/*************************************************
*             PCRE testing program               *
*************************************************/

/* This program was hacked up as a tester for PCRE. I really should have
written it more tidily in the first place. Will I ever learn? It has grown and
been extended and consequently is now rather, er, *very* untidy in places.

-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

    * Neither the name of the University of Cambridge nor the names of its
      contributors may be used to endorse or promote products derived from
      this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/


#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <locale.h>
#include <errno.h>


/* A number of things vary for Windows builds. Originally, pcretest opened its
input and output without "b"; then I was told that "b" was needed in some
environments, so it was added for release 5.0 to both the input and output. (It
makes no difference on Unix-like systems.) Later I was told that it is wrong
for the input on Windows. I've now abstracted the modes into two macros that
are set here, to make it easier to fiddle with them, and removed "b" from the
input mode under Windows. */

#if defined(_WIN32) || defined(WIN32)
#include <io.h>                /* For _setmode() */
#include <fcntl.h>             /* For _O_BINARY */
#define INPUT_MODE   "r"
#define OUTPUT_MODE  "wb"

#else
#include <sys/time.h>          /* These two includes are needed */
#include <sys/resource.h>      /* for setrlimit(). */
#define INPUT_MODE   "rb"
#define OUTPUT_MODE  "wb"
#endif


/* We have to include pcre_internal.h because we need the internal info for
displaying the results of pcre_study() and we also need to know about the
internal macros, structures, and other internal data values; pcretest has
"inside information" compared to a program that strictly follows the PCRE API.

Although pcre_internal.h does itself include pcre.h, we explicitly include it
here before pcre_internal.h so that the PCRE_EXP_xxx macros get set
appropriately for an application, not for building PCRE. */

#include "pcre.h"
#include "pcre_internal.h"

/* We need access to the data tables that PCRE uses. So as not to have to keep
two copies, we include the source file here, changing the names of the external
symbols to prevent clashes. */

#define _pcre_utf8_table1      utf8_table1
#define _pcre_utf8_table1_size utf8_table1_size
#define _pcre_utf8_table2      utf8_table2
#define _pcre_utf8_table3      utf8_table3
#define _pcre_utf8_table4      utf8_table4
#define _pcre_utt              utt
#define _pcre_utt_size         utt_size
#define _pcre_utt_names        utt_names
#define _pcre_OP_lengths       OP_lengths

#include "pcre_tables.c"

/* We also need the pcre_printint() function for printing out compiled
patterns. This function is in a separate file so that it can be included in
pcre_compile.c when that module is compiled with debugging enabled.

The definition of the macro PRINTABLE, which determines whether to print an
output character as-is or as a hex value when showing compiled patterns, is
contained in this file. We uses it here also, in cases when the locale has not
been explicitly changed, so as to get consistent output from systems that
differ in their output from isprint() even in the "C" locale. */

#include "pcre_printint.src"

#define PRINTHEX(c) (locale_set? isprint(c) : PRINTABLE(c))


/* It is possible to compile this test program without including support for
testing the POSIX interface, though this is not available via the standard
Makefile. */

#if !defined NOPOSIX
#include "pcreposix.h"
#endif

/* It is also possible, for the benefit of the version currently imported into
Exim, to build pcretest without support for UTF8 (define NOUTF8), without the
interface to the DFA matcher (NODFA), and without the doublecheck of the old
"info" function (define NOINFOCHECK). In fact, we automatically cut out the
UTF8 support if PCRE is built without it. */

#ifndef SUPPORT_UTF8
#ifndef NOUTF8
#define NOUTF8
#endif
#endif


/* Other parameters */

#ifndef CLOCKS_PER_SEC
#ifdef CLK_TCK
#define CLOCKS_PER_SEC CLK_TCK
#else
#define CLOCKS_PER_SEC 100
#endif
#endif

/* This is the default loop count for timing. */

#define LOOPREPEAT 500000

/* Static variables */

static FILE *outfile;
static int log_store = 0;
static int callout_count;
static int callout_extra;
static int callout_fail_count;
static int callout_fail_id;
static int debug_lengths;
static int first_callout;
static int locale_set = 0;
static int show_malloc;
static int use_utf8;
static size_t gotten_store;

/* The buffers grow automatically if very long input lines are encountered. */

static int buffer_size = 50000;
static uschar *buffer = NULL;
static uschar *dbuffer = NULL;
static uschar *pbuffer = NULL;



/*************************************************
*        Read or extend an input line            *
*************************************************/

/* Input lines are read into buffer, but both patterns and data lines can be
continued over multiple input lines. In addition, if the buffer fills up, we
want to automatically expand it so as to be able to handle extremely large
lines that are needed for certain stress tests. When the input buffer is
expanded, the other two buffers must also be expanded likewise, and the
contents of pbuffer, which are a copy of the input for callouts, must be
preserved (for when expansion happens for a data line). This is not the most
optimal way of handling this, but hey, this is just a test program!

Arguments:
  f            the file to read
  start        where in buffer to start (this *must* be within buffer)

Returns:       pointer to the start of new data
               could be a copy of start, or could be moved
               NULL if no data read and EOF reached
*/

static uschar *
extend_inputline(FILE *f, uschar *start)
{
uschar *here = start;

for (;;)
  {
  int rlen = buffer_size - (here - buffer);

  if (rlen > 1000)
    {
    int dlen;
    if (fgets((char *)here, rlen,  f) == NULL)
      return (here == start)? NULL : start;
    dlen = (int)strlen((char *)here);
    if (dlen > 0 && here[dlen - 1] == '\n') return start;
    here += dlen;
    }

  else
    {
    int new_buffer_size = 2*buffer_size;
    uschar *new_buffer = (unsigned char *)malloc(new_buffer_size);
    uschar *new_dbuffer = (unsigned char *)malloc(new_buffer_size);
    uschar *new_pbuffer = (unsigned char *)malloc(new_buffer_size);

    if (new_buffer == NULL || new_dbuffer == NULL || new_pbuffer == NULL)
      {
      fprintf(stderr, "pcretest: malloc(%d) failed\n", new_buffer_size);
      exit(1);
      }

    memcpy(new_buffer, buffer, buffer_size);
    memcpy(new_pbuffer, pbuffer, buffer_size);

    buffer_size = new_buffer_size;

    start = new_buffer + (start - buffer);
    here = new_buffer + (here - buffer);

    free(buffer);
    free(dbuffer);
    free(pbuffer);

    buffer = new_buffer;
    dbuffer = new_dbuffer;
    pbuffer = new_pbuffer;
    }
  }

return NULL;  /* Control never gets here */
}







/*************************************************
*          Read number from string               *
*************************************************/

/* We don't use strtoul() because SunOS4 doesn't have it. Rather than mess
around with conditional compilation, just do the job by hand. It is only used
for unpicking arguments, so just keep it simple.

Arguments:
  str           string to be converted
  endptr        where to put the end pointer

Returns:        the unsigned long
*/

static int
get_value(unsigned char *str, unsigned char **endptr)
{
int result = 0;
while(*str != 0 && isspace(*str)) str++;
while (isdigit(*str)) result = result * 10 + (int)(*str++ - '0');
*endptr = str;
return(result);
}




/*************************************************
*            Convert UTF-8 string to value       *
*************************************************/

/* This function takes one or more bytes that represents a UTF-8 character,
and returns the value of the character.

Argument:
  utf8bytes   a pointer to the byte vector
  vptr        a pointer to an int to receive the value

Returns:      >  0 => the number of bytes consumed
              -6 to 0 => malformed UTF-8 character at offset = (-return)
*/

#if !defined NOUTF8

static int
utf82ord(unsigned char *utf8bytes, int *vptr)
{
int c = *utf8bytes++;
int d = c;
int i, j, s;

for (i = -1; i < 6; i++)               /* i is number of additional bytes */
  {
  if ((d & 0x80) == 0) break;
  d <<= 1;
  }

if (i == -1) { *vptr = c; return 1; }  /* ascii character */
if (i == 0 || i == 6) return 0;        /* invalid UTF-8 */

/* i now has a value in the range 1-5 */

s = 6*i;
d = (c & utf8_table3[i]) << s;

for (j = 0; j < i; j++)
  {
  c = *utf8bytes++;
  if ((c & 0xc0) != 0x80) return -(j+1);
  s -= 6;
  d |= (c & 0x3f) << s;
  }

/* Check that encoding was the correct unique one */

for (j = 0; j < utf8_table1_size; j++)
  if (d <= utf8_table1[j]) break;
if (j != i) return -(i+1);

/* Valid value */

*vptr = d;
return i+1;
}

#endif



/*************************************************
*       Convert character value to UTF-8         *
*************************************************/

/* This function takes an integer value in the range 0 - 0x7fffffff
and encodes it as a UTF-8 character in 0 to 6 bytes.

Arguments:
  cvalue     the character value
  utf8bytes  pointer to buffer for result - at least 6 bytes long

Returns:     number of characters placed in the buffer
*/

#if !defined NOUTF8

static int
ord2utf8(int cvalue, uschar *utf8bytes)
{
register int i, j;
for (i = 0; i < utf8_table1_size; i++)
  if (cvalue <= utf8_table1[i]) break;
utf8bytes += i;
for (j = i; j > 0; j--)
 {
 *utf8bytes-- = 0x80 | (cvalue & 0x3f);
 cvalue >>= 6;
 }
*utf8bytes = utf8_table2[i] | cvalue;
return i + 1;
}

#endif



/*************************************************
*             Print character string             *
*************************************************/

/* Character string printing function. Must handle UTF-8 strings in utf8
mode. Yields number of characters printed. If handed a NULL file, just counts
chars without printing. */

static int pchars(unsigned char *p, int length, FILE *f)
{
int c = 0;
int yield = 0;

while (length-- > 0)
  {
#if !defined NOUTF8
  if (use_utf8)
    {
    int rc = utf82ord(p, &c);

    if (rc > 0 && rc <= length + 1)   /* Mustn't run over the end */
      {
      length -= rc - 1;
      p += rc;
      if (PRINTHEX(c))
        {
        if (f != NULL) fprintf(f, "%c", c);
        yield++;
        }
      else
        {
        int n = 4;
        if (f != NULL) fprintf(f, "\\x{%02x}", c);
        yield += (n <= 0x000000ff)? 2 :
                 (n <= 0x00000fff)? 3 :
                 (n <= 0x0000ffff)? 4 :
                 (n <= 0x000fffff)? 5 : 6;
        }
      continue;
      }
    }
#endif

   /* Not UTF-8, or malformed UTF-8  */

  c = *p++;
  if (PRINTHEX(c))
    {
    if (f != NULL) fprintf(f, "%c", c);
    yield++;
    }
  else
    {
    if (f != NULL) fprintf(f, "\\x%02x", c);
    yield += 4;
    }
  }

return yield;
}



/*************************************************
*              Callout function                  *
*************************************************/

/* Called from PCRE as a result of the (?C) item. We print out where we are in
the match. Yield zero unless more callouts than the fail count, or the callout
data is not zero. */

static int callout(pcre_callout_block *cb)
{
FILE *f = (first_callout | callout_extra)? outfile : NULL;
int i, pre_start, post_start, subject_length;

if (callout_extra)
  {
  fprintf(f, "Callout %d: last capture = %d\n",
    cb->callout_number, cb->capture_last);

  for (i = 0; i < cb->capture_top * 2; i += 2)
    {
    if (cb->offset_vector[i] < 0)
      fprintf(f, "%2d: <unset>\n", i/2);
    else
      {
      fprintf(f, "%2d: ", i/2);
      (void)pchars((unsigned char *)cb->subject + cb->offset_vector[i],
        cb->offset_vector[i+1] - cb->offset_vector[i], f);
      fprintf(f, "\n");
      }
    }
  }

/* Re-print the subject in canonical form, the first time or if giving full
datails. On subsequent calls in the same match, we use pchars just to find the
printed lengths of the substrings. */

if (f != NULL) fprintf(f, "--->");

pre_start = pchars((unsigned char *)cb->subject, cb->start_match, f);
post_start = pchars((unsigned char *)(cb->subject + cb->start_match),
  cb->current_position - cb->start_match, f);

subject_length = pchars((unsigned char *)cb->subject, cb->subject_length, NULL);

(void)pchars((unsigned char *)(cb->subject + cb->current_position),
  cb->subject_length - cb->current_position, f);

if (f != NULL) fprintf(f, "\n");

/* Always print appropriate indicators, with callout number if not already
shown. For automatic callouts, show the pattern offset. */

if (cb->callout_number == 255)
  {
  fprintf(outfile, "%+3d ", cb->pattern_position);
  if (cb->pattern_position > 99) fprintf(outfile, "\n    ");
  }
else
  {
  if (callout_extra) fprintf(outfile, "    ");
    else fprintf(outfile, "%3d ", cb->callout_number);
  }

for (i = 0; i < pre_start; i++) fprintf(outfile, " ");
fprintf(outfile, "^");

if (post_start > 0)
  {
  for (i = 0; i < post_start - 1; i++) fprintf(outfile, " ");
  fprintf(outfile, "^");
  }

for (i = 0; i < subject_length - pre_start - post_start + 4; i++)
  fprintf(outfile, " ");

fprintf(outfile, "%.*s", (cb->next_item_length == 0)? 1 : cb->next_item_length,
  pbuffer + cb->pattern_position);

fprintf(outfile, "\n");
first_callout = 0;

if (cb->callout_data != NULL)
  {
  int callout_data = *((int *)(cb->callout_data));
  if (callout_data != 0)
    {
    fprintf(outfile, "Callout data = %d\n", callout_data);
    return callout_data;
    }
  }

return (cb->callout_number != callout_fail_id)? 0 :
       (++callout_count >= callout_fail_count)? 1 : 0;
}


/*************************************************
*            Local malloc functions              *
*************************************************/

/* Alternative malloc function, to test functionality and show the size of the
compiled re. */

static void *new_malloc(size_t size)
{
void *block = malloc(size);
gotten_store = size;
if (show_malloc)
  fprintf(outfile, "malloc       %3d %p\n", (int)size, block);
return block;
}

static void new_free(void *block)
{
if (show_malloc)
  fprintf(outfile, "free             %p\n", block);
free(block);
}


/* For recursion malloc/free, to test stacking calls */

static void *stack_malloc(size_t size)
{
void *block = malloc(size);
if (show_malloc)
  fprintf(outfile, "stack_malloc %3d %p\n", (int)size, block);
return block;
}

static void stack_free(void *block)
{
if (show_malloc)
  fprintf(outfile, "stack_free       %p\n", block);
free(block);
}


/*************************************************
*          Call pcre_fullinfo()                  *
*************************************************/

/* Get one piece of information from the pcre_fullinfo() function */

static void new_info(pcre *re, pcre_extra *study, int option, void *ptr)
{
int rc;
if ((rc = pcre_fullinfo(re, study, option, ptr)) < 0)
  fprintf(outfile, "Error %d from pcre_fullinfo(%d)\n", rc, option);
}



/*************************************************
*         Byte flipping function                 *
*************************************************/

static unsigned long int
byteflip(unsigned long int value, int n)
{
if (n == 2) return ((value & 0x00ff) << 8) | ((value & 0xff00) >> 8);
return ((value & 0x000000ff) << 24) |
       ((value & 0x0000ff00) <<  8) |
       ((value & 0x00ff0000) >>  8) |
       ((value & 0xff000000) >> 24);
}




/*************************************************
*        Check match or recursion limit          *
*************************************************/

static int
check_match_limit(pcre *re, pcre_extra *extra, uschar *bptr, int len,
  int start_offset, int options, int *use_offsets, int use_size_offsets,
  int flag, unsigned long int *limit, int errnumber, const char *msg)
{
int count;
int min = 0;
int mid = 64;
int max = -1;

extra->flags |= flag;

for (;;)
  {
  *limit = mid;

  count = pcre_exec(re, extra, (char *)bptr, len, start_offset, options,
    use_offsets, use_size_offsets);

  if (count == errnumber)
    {
    /* fprintf(outfile, "Testing %s limit = %d\n", msg, mid); */
    min = mid;
    mid = (mid == max - 1)? max : (max > 0)? (min + max)/2 : mid*2;
    }

  else if (count >= 0 || count == PCRE_ERROR_NOMATCH ||
                         count == PCRE_ERROR_PARTIAL)
    {
    if (mid == min + 1)
      {
      fprintf(outfile, "Minimum %s limit = %d\n", msg, mid);
      break;
      }
    /* fprintf(outfile, "Testing %s limit = %d\n", msg, mid); */
    max = mid;
    mid = (min + mid)/2;
    }
  else break;    /* Some other error */
  }

extra->flags &= ~flag;
return count;
}



/*************************************************
*         Case-independent strncmp() function    *
*************************************************/

/*
Arguments:
  s         first string
  t         second string
  n         number of characters to compare

Returns:    < 0, = 0, or > 0, according to the comparison
*/

static int
strncmpic(uschar *s, uschar *t, int n)
{
while (n--)
  {
  int c = tolower(*s++) - tolower(*t++);
  if (c) return c;
  }
return 0;
}



/*************************************************
*         Check newline indicator                *
*************************************************/

/* This is used both at compile and run-time to check for <xxx> escapes, where
xxx is LF, CR, CRLF, ANYCRLF, or ANY. Print a message and return 0 if there is
no match.

Arguments:
  p           points after the leading '<'
  f           file for error message

Returns:      appropriate PCRE_NEWLINE_xxx flags, or 0
*/

static int
check_newline(uschar *p, FILE *f)
{
if (strncmpic(p, (uschar *)"cr>", 3) == 0) return PCRE_NEWLINE_CR;
if (strncmpic(p, (uschar *)"lf>", 3) == 0) return PCRE_NEWLINE_LF;
if (strncmpic(p, (uschar *)"crlf>", 5) == 0) return PCRE_NEWLINE_CRLF;
if (strncmpic(p, (uschar *)"anycrlf>", 8) == 0) return PCRE_NEWLINE_ANYCRLF;
if (strncmpic(p, (uschar *)"any>", 4) == 0) return PCRE_NEWLINE_ANY;
if (strncmpic(p, (uschar *)"bsr_anycrlf>", 12) == 0) return PCRE_BSR_ANYCRLF;
if (strncmpic(p, (uschar *)"bsr_unicode>", 12) == 0) return PCRE_BSR_UNICODE;
fprintf(f, "Unknown newline type at: <%s\n", p);
return 0;
}



/*************************************************
*             Usage function                     *
*************************************************/

static void
usage(void)
{
printf("Usage:     pcretest [options] [<input> [<output>]]\n");
printf("  -b       show compiled code (bytecode)\n");
printf("  -C       show PCRE compile-time options and exit\n");
printf("  -d       debug: show compiled code and information (-b and -i)\n");
#if !defined NODFA
printf("  -dfa     force DFA matching for all subjects\n");
#endif
printf("  -help    show usage information\n");
printf("  -i       show information about compiled patterns\n"
       "  -m       output memory used information\n"
       "  -o <n>   set size of offsets vector to <n>\n");
#if !defined NOPOSIX
printf("  -p       use POSIX interface\n");
#endif
printf("  -q       quiet: do not output PCRE version number at start\n");
printf("  -S <n>   set stack size to <n> megabytes\n");
printf("  -s       output store (memory) used information\n"
       "  -t       time compilation and execution\n");
printf("  -t <n>   time compilation and execution, repeating <n> times\n");
printf("  -tm      time execution (matching) only\n");
printf("  -tm <n>  time execution (matching) only, repeating <n> times\n");
}



/*************************************************
*                Main Program                    *
*************************************************/

/* Read lines from named file or stdin and write to named file or stdout; lines
consist of a regular expression, in delimiters and optionally followed by
options, followed by a set of test data, terminated by an empty line. */

int main(int argc, char **argv)
{
FILE *infile = stdin;
int options = 0;
int study_options = 0;
int op = 1;
int timeit = 0;
int timeitm = 0;
int showinfo = 0;
int showstore = 0;
int quiet = 0;
int size_offsets = 45;
int size_offsets_max;
int *offsets = NULL;
#if !defined NOPOSIX
int posix = 0;
#endif
int debug = 0;
int done = 0;
int all_use_dfa = 0;
int yield = 0;
int stack_size;

/* These vectors store, end-to-end, a list of captured substring names. Assume
that 1024 is plenty long enough for the few names we'll be testing. */

uschar copynames[1024];
uschar getnames[1024];

uschar *copynamesptr;
uschar *getnamesptr;

/* Get buffers from malloc() so that Electric Fence will check their misuse
when I am debugging. They grow automatically when very long lines are read. */

buffer = (unsigned char *)malloc(buffer_size);
dbuffer = (unsigned char *)malloc(buffer_size);
pbuffer = (unsigned char *)malloc(buffer_size);

/* The outfile variable is static so that new_malloc can use it. */

outfile = stdout;

/* The following  _setmode() stuff is some Windows magic that tells its runtime
library to translate CRLF into a single LF character. At least, that's what
I've been told: never having used Windows I take this all on trust. Originally
it set 0x8000, but then I was advised that _O_BINARY was better. */

#if defined(_WIN32) || defined(WIN32)
_setmode( _fileno( stdout ), _O_BINARY );
#endif

/* Scan options */

while (argc > 1 && argv[op][0] == '-')
  {
  unsigned char *endptr;

  if (strcmp(argv[op], "-s") == 0 || strcmp(argv[op], "-m") == 0)
    showstore = 1;
  else if (strcmp(argv[op], "-q") == 0) quiet = 1;
  else if (strcmp(argv[op], "-b") == 0) debug = 1;
  else if (strcmp(argv[op], "-i") == 0) showinfo = 1;
  else if (strcmp(argv[op], "-d") == 0) showinfo = debug = 1;
#if !defined NODFA
  else if (strcmp(argv[op], "-dfa") == 0) all_use_dfa = 1;
#endif
  else if (strcmp(argv[op], "-o") == 0 && argc > 2 &&
      ((size_offsets = get_value((unsigned char *)argv[op+1], &endptr)),
        *endptr == 0))
    {
    op++;
    argc--;
    }
  else if (strcmp(argv[op], "-t") == 0 || strcmp(argv[op], "-tm") == 0)
    {
    int both = argv[op][2] == 0;
    int temp;
    if (argc > 2 && (temp = get_value((unsigned char *)argv[op+1], &endptr),
                     *endptr == 0))
      {
      timeitm = temp;
      op++;
      argc--;
      }
    else timeitm = LOOPREPEAT;
    if (both) timeit = timeitm;
    }
  else if (strcmp(argv[op], "-S") == 0 && argc > 2 &&
      ((stack_size = get_value((unsigned char *)argv[op+1], &endptr)),
        *endptr == 0))
    {
#if defined(_WIN32) || defined(WIN32)
    printf("PCRE: -S not supported on this OS\n");
    exit(1);
#else
    int rc;
    struct rlimit rlim;
    getrlimit(RLIMIT_STACK, &rlim);
    rlim.rlim_cur = stack_size * 1024 * 1024;
    rc = setrlimit(RLIMIT_STACK, &rlim);
    if (rc != 0)
      {
    printf("PCRE: setrlimit() failed with error %d\n", rc);
    exit(1);
      }
    op++;
    argc--;
#endif
    }
#if !defined NOPOSIX
  else if (strcmp(argv[op], "-p") == 0) posix = 1;
#endif
  else if (strcmp(argv[op], "-C") == 0)
    {
    int rc;
    printf("PCRE version %s\n", pcre_version());
    printf("Compiled with\n");
    (void)pcre_config(PCRE_CONFIG_UTF8, &rc);
    printf("  %sUTF-8 support\n", rc? "" : "No ");
    (void)pcre_config(PCRE_CONFIG_UNICODE_PROPERTIES, &rc);
    printf("  %sUnicode properties support\n", rc? "" : "No ");
    (void)pcre_config(PCRE_CONFIG_NEWLINE, &rc);
    printf("  Newline sequence is %s\n", (rc == '\r')? "CR" :
      (rc == '\n')? "LF" : (rc == ('\r'<<8 | '\n'))? "CRLF" :
      (rc == -2)? "ANYCRLF" :
      (rc == -1)? "ANY" : "???");
    (void)pcre_config(PCRE_CONFIG_BSR, &rc);
    printf("  \\R matches %s\n", rc? "CR, LF, or CRLF only" :
                                     "all Unicode newlines");
    (void)pcre_config(PCRE_CONFIG_LINK_SIZE, &rc);
    printf("  Internal link size = %d\n", rc);
    (void)pcre_config(PCRE_CONFIG_POSIX_MALLOC_THRESHOLD, &rc);
    printf("  POSIX malloc threshold = %d\n", rc);
    (void)pcre_config(PCRE_CONFIG_MATCH_LIMIT, &rc);
    printf("  Default match limit = %d\n", rc);
    (void)pcre_config(PCRE_CONFIG_MATCH_LIMIT_RECURSION, &rc);
    printf("  Default recursion depth limit = %d\n", rc);
    (void)pcre_config(PCRE_CONFIG_STACKRECURSE, &rc);
    printf("  Match recursion uses %s\n", rc? "stack" : "heap");
    goto EXIT;
    }
  else if (strcmp(argv[op], "-help") == 0 ||
           strcmp(argv[op], "--help") == 0)
    {
    usage();
    goto EXIT;
    }
  else
    {
    printf("** Unknown or malformed option %s\n", argv[op]);
    usage();
    yield = 1;
    goto EXIT;
    }
  op++;
  argc--;
  }

/* Get the store for the offsets vector, and remember what it was */

size_offsets_max = size_offsets;
offsets = (int *)malloc(size_offsets_max * sizeof(int));
if (offsets == NULL)
  {
  printf("** Failed to get %d bytes of memory for offsets vector\n",
    (int)(size_offsets_max * sizeof(int)));
  yield = 1;
  goto EXIT;
  }

/* Sort out the input and output files */

if (argc > 1)
  {
  infile = fopen(argv[op], INPUT_MODE);
  if (infile == NULL)
    {
    printf("** Failed to open %s\n", argv[op]);
    yield = 1;
    goto EXIT;
    }
  }

if (argc > 2)
  {
  outfile = fopen(argv[op+1], OUTPUT_MODE);
  if (outfile == NULL)
    {
    printf("** Failed to open %s\n", argv[op+1]);
    yield = 1;
    goto EXIT;
    }
  }

/* Set alternative malloc function */

pcre_malloc = new_malloc;
pcre_free = new_free;
pcre_stack_malloc = stack_malloc;
pcre_stack_free = stack_free;

/* Heading line unless quiet, then prompt for first regex if stdin */

if (!quiet) fprintf(outfile, "PCRE version %s\n\n", pcre_version());

/* Main loop */

while (!done)
  {
  pcre *re = NULL;
  pcre_extra *extra = NULL;

#if !defined NOPOSIX  /* There are still compilers that require no indent */
  regex_t preg;
  int do_posix = 0;
#endif

  const char *error;
  unsigned char *p, *pp, *ppp;
  unsigned char *to_file = NULL;
  const unsigned char *tables = NULL;
  unsigned long int true_size, true_study_size = 0;
  size_t size, regex_gotten_store;
  int do_study = 0;
  int do_debug = debug;
  int do_G = 0;
  int do_g = 0;
  int do_showinfo = showinfo;
  int do_showrest = 0;
  int do_flip = 0;
  int erroroffset, len, delimiter, poffset;

  use_utf8 = 0;
  debug_lengths = 1;

  if (infile == stdin) printf("  re> ");
  if (extend_inputline(infile, buffer) == NULL) break;
  if (infile != stdin) fprintf(outfile, "%s", (char *)buffer);
  fflush(outfile);

  p = buffer;
  while (isspace(*p)) p++;
  if (*p == 0) continue;

  /* See if the pattern is to be loaded pre-compiled from a file. */

  if (*p == '<' && strchr((char *)(p+1), '<') == NULL)
    {
    unsigned long int magic, get_options;
    uschar sbuf[8];
    FILE *f;

    p++;
    pp = p + (int)strlen((char *)p);
    while (isspace(pp[-1])) pp--;
    *pp = 0;

    f = fopen((char *)p, "rb");
    if (f == NULL)
      {
      fprintf(outfile, "Failed to open %s: %s\n", p, strerror(errno));
      continue;
      }

    if (fread(sbuf, 1, 8, f) != 8) goto FAIL_READ;

    true_size =
      (sbuf[0] << 24) | (sbuf[1] << 16) | (sbuf[2] << 8) | sbuf[3];
    true_study_size =
      (sbuf[4] << 24) | (sbuf[5] << 16) | (sbuf[6] << 8) | sbuf[7];

    re = (real_pcre *)new_malloc(true_size);
    regex_gotten_store = gotten_store;

    if (fread(re, 1, true_size, f) != true_size) goto FAIL_READ;

    magic = ((real_pcre *)re)->magic_number;
    if (magic != MAGIC_NUMBER)
      {
      if (byteflip(magic, sizeof(magic)) == MAGIC_NUMBER)
        {
        do_flip = 1;
        }
      else
        {
        fprintf(outfile, "Data in %s is not a compiled PCRE regex\n", p);
        fclose(f);
        continue;
        }
      }

    fprintf(outfile, "Compiled regex%s loaded from %s\n",
      do_flip? " (byte-inverted)" : "", p);

    /* Need to know if UTF-8 for printing data strings */

    new_info(re, NULL, PCRE_INFO_OPTIONS, &get_options);
    use_utf8 = (get_options & PCRE_UTF8) != 0;

    /* Now see if there is any following study data */

    if (true_study_size != 0)
      {
      pcre_study_data *psd;

      extra = (pcre_extra *)new_malloc(sizeof(pcre_extra) + true_study_size);
      extra->flags = PCRE_EXTRA_STUDY_DATA;

      psd = (pcre_study_data *)(((char *)extra) + sizeof(pcre_extra));
      extra->study_data = psd;

      if (fread(psd, 1, true_study_size, f) != true_study_size)
        {
        FAIL_READ:
        fprintf(outfile, "Failed to read data from %s\n", p);
        if (extra != NULL) new_free(extra);
        if (re != NULL) new_free(re);
        fclose(f);
        continue;
        }
      fprintf(outfile, "Study data loaded from %s\n", p);
      do_study = 1;     /* To get the data output if requested */
      }
    else fprintf(outfile, "No study data\n");

    fclose(f);
    goto SHOW_INFO;
    }

  /* In-line pattern (the usual case). Get the delimiter and seek the end of
  the pattern; if is isn't complete, read more. */

  delimiter = *p++;

  if (isalnum(delimiter) || delimiter == '\\')
    {
    fprintf(outfile, "** Delimiter must not be alphameric or \\\n");
    goto SKIP_DATA;
    }

  pp = p;
  poffset = p - buffer;

  for(;;)
    {
    while (*pp != 0)
      {
      if (*pp == '\\' && pp[1] != 0) pp++;
        else if (*pp == delimiter) break;
      pp++;
      }
    if (*pp != 0) break;
    if (infile == stdin) printf("    > ");
    if ((pp = extend_inputline(infile, pp)) == NULL)
      {
      fprintf(outfile, "** Unexpected EOF\n");
      done = 1;
      goto CONTINUE;
      }
    if (infile != stdin) fprintf(outfile, "%s", (char *)pp);
    }

  /* The buffer may have moved while being extended; reset the start of data
  pointer to the correct relative point in the buffer. */

  p = buffer + poffset;

  /* If the first character after the delimiter is backslash, make
  the pattern end with backslash. This is purely to provide a way
  of testing for the error message when a pattern ends with backslash. */

  if (pp[1] == '\\') *pp++ = '\\';

  /* Terminate the pattern at the delimiter, and save a copy of the pattern
  for callouts. */

  *pp++ = 0;
  strcpy((char *)pbuffer, (char *)p);

  /* Look for options after final delimiter */

  options = 0;
  study_options = 0;
  log_store = showstore;  /* default from command line */

  while (*pp != 0)
    {
    switch (*pp++)
      {
      case 'f': options |= PCRE_FIRSTLINE; break;
      case 'g': do_g = 1; break;
      case 'i': options |= PCRE_CASELESS; break;
      case 'm': options |= PCRE_MULTILINE; break;
      case 's': options |= PCRE_DOTALL; break;
      case 'x': options |= PCRE_EXTENDED; break;

      case '+': do_showrest = 1; break;
      case 'A': options |= PCRE_ANCHORED; break;
      case 'B': do_debug = 1; break;
      case 'C': options |= PCRE_AUTO_CALLOUT; break;
      case 'D': do_debug = do_showinfo = 1; break;
      case 'E': options |= PCRE_DOLLAR_ENDONLY; break;
      case 'F': do_flip = 1; break;
      case 'G': do_G = 1; break;
      case 'I': do_showinfo = 1; break;
      case 'J': options |= PCRE_DUPNAMES; break;
      case 'M': log_store = 1; break;
      case 'N': options |= PCRE_NO_AUTO_CAPTURE; break;

#if !defined NOPOSIX
      case 'P': do_posix = 1; break;
#endif

      case 'S': do_study = 1; break;
      case 'U': options |= PCRE_UNGREEDY; break;
      case 'X': options |= PCRE_EXTRA; break;
      case 'Z': debug_lengths = 0; break;
      case '8': options |= PCRE_UTF8; use_utf8 = 1; break;
      case '?': options |= PCRE_NO_UTF8_CHECK; break;

      case 'L':
      ppp = pp;
      /* The '\r' test here is so that it works on Windows. */
      /* The '0' test is just in case this is an unterminated line. */
      while (*ppp != 0 && *ppp != '\n' && *ppp != '\r' && *ppp != ' ') ppp++;
      *ppp = 0;
      if (setlocale(LC_CTYPE, (const char *)pp) == NULL)
        {
        fprintf(outfile, "** Failed to set locale \"%s\"\n", pp);
        goto SKIP_DATA;
        }
      locale_set = 1;
      tables = pcre_maketables();
      pp = ppp;
      break;

      case '>':
      to_file = pp;
      while (*pp != 0) pp++;
      while (isspace(pp[-1])) pp--;
      *pp = 0;
      break;

      case '<':
        {
        int x = check_newline(pp, outfile);
        if (x == 0) goto SKIP_DATA;
        options |= x;
        while (*pp++ != '>');
        }
      break;

      case '\r':                      /* So that it works in Windows */
      case '\n':
      case ' ':
      break;

      default:
      fprintf(outfile, "** Unknown option '%c'\n", pp[-1]);
      goto SKIP_DATA;
      }
    }

  /* Handle compiling via the POSIX interface, which doesn't support the
  timing, showing, or debugging options, nor the ability to pass over
  local character tables. */

#if !defined NOPOSIX
  if (posix || do_posix)
    {
    int rc;
    int cflags = 0;

    if ((options & PCRE_CASELESS) != 0) cflags |= REG_ICASE;
    if ((options & PCRE_MULTILINE) != 0) cflags |= REG_NEWLINE;
    if ((options & PCRE_DOTALL) != 0) cflags |= REG_DOTALL;
    if ((options & PCRE_NO_AUTO_CAPTURE) != 0) cflags |= REG_NOSUB;
    if ((options & PCRE_UTF8) != 0) cflags |= REG_UTF8;

    rc = regcomp(&preg, (char *)p, cflags);

    /* Compilation failed; go back for another re, skipping to blank line
    if non-interactive. */

    if (rc != 0)
      {
      (void)regerror(rc, &preg, (char *)buffer, buffer_size);
      fprintf(outfile, "Failed: POSIX code %d: %s\n", rc, buffer);
      goto SKIP_DATA;
      }
    }

  /* Handle compiling via the native interface */

  else
#endif  /* !defined NOPOSIX */

    {
    if (timeit > 0)
      {
      register int i;
      clock_t time_taken;
      clock_t start_time = clock();
      for (i = 0; i < timeit; i++)
        {
        re = pcre_compile((char *)p, options, &error, &erroroffset, tables);
        if (re != NULL) free(re);
        }
      time_taken = clock() - start_time;
      fprintf(outfile, "Compile time %.4f milliseconds\n",
        (((double)time_taken * 1000.0) / (double)timeit) /
          (double)CLOCKS_PER_SEC);
      }

    re = pcre_compile((char *)p, options, &error, &erroroffset, tables);

    /* Compilation failed; go back for another re, skipping to blank line
    if non-interactive. */

    if (re == NULL)
      {
      fprintf(outfile, "Failed: %s at offset %d\n", error, erroroffset);
      SKIP_DATA:
      if (infile != stdin)
        {
        for (;;)
          {
          if (extend_inputline(infile, buffer) == NULL)
            {
            done = 1;
            goto CONTINUE;
            }
          len = (int)strlen((char *)buffer);
          while (len > 0 && isspace(buffer[len-1])) len--;
          if (len == 0) break;
          }
        fprintf(outfile, "\n");
        }
      goto CONTINUE;
      }

    /* Compilation succeeded; print data if required. There are now two
    info-returning functions. The old one has a limited interface and
    returns only limited data. Check that it agrees with the newer one. */

    if (log_store)
      fprintf(outfile, "Memory allocation (code space): %d\n",
        (int)(gotten_store -
              sizeof(real_pcre) -
              ((real_pcre *)re)->name_count * ((real_pcre *)re)->name_entry_size));

    /* Extract the size for possible writing before possibly flipping it,
    and remember the store that was got. */

    true_size = ((real_pcre *)re)->size;
    regex_gotten_store = gotten_store;

    /* If /S was present, study the regexp to generate additional info to
    help with the matching. */

    if (do_study)
      {
      if (timeit > 0)
        {
        register int i;
        clock_t time_taken;
        clock_t start_time = clock();
        for (i = 0; i < timeit; i++)
          extra = pcre_study(re, study_options, &error);
        time_taken = clock() - start_time;
        if (extra != NULL) free(extra);
        fprintf(outfile, "  Study time %.4f milliseconds\n",
          (((double)time_taken * 1000.0) / (double)timeit) /
            (double)CLOCKS_PER_SEC);
        }
      extra = pcre_study(re, study_options, &error);
      if (error != NULL)
        fprintf(outfile, "Failed to study: %s\n", error);
      else if (extra != NULL)
        true_study_size = ((pcre_study_data *)(extra->study_data))->size;
      }

    /* If the 'F' option was present, we flip the bytes of all the integer
    fields in the regex data block and the study block. This is to make it
    possible to test PCRE's handling of byte-flipped patterns, e.g. those
    compiled on a different architecture. */

    if (do_flip)
      {
      real_pcre *rre = (real_pcre *)re;
      rre->magic_number =
        byteflip(rre->magic_number, sizeof(rre->magic_number));
      rre->size = byteflip(rre->size, sizeof(rre->size));
      rre->options = byteflip(rre->options, sizeof(rre->options));
      rre->flags = (pcre_uint16)byteflip(rre->flags, sizeof(rre->flags));
      rre->top_bracket =
        (pcre_uint16)byteflip(rre->top_bracket, sizeof(rre->top_bracket));
      rre->top_backref =
        (pcre_uint16)byteflip(rre->top_backref, sizeof(rre->top_backref));
      rre->first_byte =
        (pcre_uint16)byteflip(rre->first_byte, sizeof(rre->first_byte));
      rre->req_byte =
        (pcre_uint16)byteflip(rre->req_byte, sizeof(rre->req_byte));
      rre->name_table_offset = (pcre_uint16)byteflip(rre->name_table_offset,
        sizeof(rre->name_table_offset));
      rre->name_entry_size = (pcre_uint16)byteflip(rre->name_entry_size,
        sizeof(rre->name_entry_size));
      rre->name_count = (pcre_uint16)byteflip(rre->name_count,
        sizeof(rre->name_count));

      if (extra != NULL)
        {
        pcre_study_data *rsd = (pcre_study_data *)(extra->study_data);
        rsd->size = byteflip(rsd->size, sizeof(rsd->size));
        rsd->options = byteflip(rsd->options, sizeof(rsd->options));
        }
      }

    /* Extract information from the compiled data if required */

    SHOW_INFO:

    if (do_debug)
      {
      fprintf(outfile, "------------------------------------------------------------------\n");
      pcre_printint(re, outfile, debug_lengths);
      }

    if (do_showinfo)
      {
      unsigned long int get_options, all_options;
#if !defined NOINFOCHECK
      int old_first_char, old_options, old_count;
#endif
      int count, backrefmax, first_char, need_char, okpartial, jchanged,
        hascrorlf;
      int nameentrysize, namecount;
      const uschar *nametable;

      new_info(re, NULL, PCRE_INFO_OPTIONS, &get_options);
      new_info(re, NULL, PCRE_INFO_SIZE, &size);
      new_info(re, NULL, PCRE_INFO_CAPTURECOUNT, &count);
      new_info(re, NULL, PCRE_INFO_BACKREFMAX, &backrefmax);
      new_info(re, NULL, PCRE_INFO_FIRSTBYTE, &first_char);
      new_info(re, NULL, PCRE_INFO_LASTLITERAL, &need_char);
      new_info(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &nameentrysize);
      new_info(re, NULL, PCRE_INFO_NAMECOUNT, &namecount);
      new_info(re, NULL, PCRE_INFO_NAMETABLE, (void *)&nametable);
      new_info(re, NULL, PCRE_INFO_OKPARTIAL, &okpartial);
      new_info(re, NULL, PCRE_INFO_JCHANGED, &jchanged);
      new_info(re, NULL, PCRE_INFO_HASCRORLF, &hascrorlf);

#if !defined NOINFOCHECK
      old_count = pcre_info(re, &old_options, &old_first_char);
      if (count < 0) fprintf(outfile,
        "Error %d from pcre_info()\n", count);
      else
        {
        if (old_count != count) fprintf(outfile,
          "Count disagreement: pcre_fullinfo=%d pcre_info=%d\n", count,
            old_count);

        if (old_first_char != first_char) fprintf(outfile,
          "First char disagreement: pcre_fullinfo=%d pcre_info=%d\n",
            first_char, old_first_char);

        if (old_options != (int)get_options) fprintf(outfile,
          "Options disagreement: pcre_fullinfo=%ld pcre_info=%d\n",
            get_options, old_options);
        }
#endif

      if (size != regex_gotten_store) fprintf(outfile,
        "Size disagreement: pcre_fullinfo=%d call to malloc for %d\n",
        (int)size, (int)regex_gotten_store);

      fprintf(outfile, "Capturing subpattern count = %d\n", count);
      if (backrefmax > 0)
        fprintf(outfile, "Max back reference = %d\n", backrefmax);

      if (namecount > 0)
        {
        fprintf(outfile, "Named capturing subpatterns:\n");
        while (namecount-- > 0)
          {
          fprintf(outfile, "  %s %*s%3d\n", nametable + 2,
            nameentrysize - 3 - (int)strlen((char *)nametable + 2), "",
            GET2(nametable, 0));
          nametable += nameentrysize;
          }
        }

      if (!okpartial) fprintf(outfile, "Partial matching not supported\n");
      if (hascrorlf) fprintf(outfile, "Contains explicit CR or LF match\n");

      all_options = ((real_pcre *)re)->options;
      if (do_flip) all_options = byteflip(all_options, sizeof(all_options));

      if (get_options == 0) fprintf(outfile, "No options\n");
        else fprintf(outfile, "Options:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
          ((get_options & PCRE_ANCHORED) != 0)? " anchored" : "",
          ((get_options & PCRE_CASELESS) != 0)? " caseless" : "",
          ((get_options & PCRE_EXTENDED) != 0)? " extended" : "",
          ((get_options & PCRE_MULTILINE) != 0)? " multiline" : "",
          ((get_options & PCRE_FIRSTLINE) != 0)? " firstline" : "",
          ((get_options & PCRE_DOTALL) != 0)? " dotall" : "",
          ((get_options & PCRE_BSR_ANYCRLF) != 0)? " bsr_anycrlf" : "",
          ((get_options & PCRE_BSR_UNICODE) != 0)? " bsr_unicode" : "",
          ((get_options & PCRE_DOLLAR_ENDONLY) != 0)? " dollar_endonly" : "",
          ((get_options & PCRE_EXTRA) != 0)? " extra" : "",
          ((get_options & PCRE_UNGREEDY) != 0)? " ungreedy" : "",
          ((get_options & PCRE_NO_AUTO_CAPTURE) != 0)? " no_auto_capture" : "",
          ((get_options & PCRE_UTF8) != 0)? " utf8" : "",
          ((get_options & PCRE_NO_UTF8_CHECK) != 0)? " no_utf8_check" : "",
          ((get_options & PCRE_DUPNAMES) != 0)? " dupnames" : "");

      if (jchanged) fprintf(outfile, "Duplicate name status changes\n");

      switch (get_options & PCRE_NEWLINE_BITS)
        {
        case PCRE_NEWLINE_CR:
        fprintf(outfile, "Forced newline sequence: CR\n");
        break;

        case PCRE_NEWLINE_LF:
        fprintf(outfile, "Forced newline sequence: LF\n");
        break;

        case PCRE_NEWLINE_CRLF:
        fprintf(outfile, "Forced newline sequence: CRLF\n");
        break;

        case PCRE_NEWLINE_ANYCRLF:
        fprintf(outfile, "Forced newline sequence: ANYCRLF\n");
        break;

        case PCRE_NEWLINE_ANY:
        fprintf(outfile, "Forced newline sequence: ANY\n");
        break;

        default:
        break;
        }

      if (first_char == -1)
        {
        fprintf(outfile, "First char at start or follows newline\n");
        }
      else if (first_char < 0)
        {
        fprintf(outfile, "No first char\n");
        }
      else
        {
        int ch = first_char & 255;
        const char *caseless = ((first_char & REQ_CASELESS) == 0)?
          "" : " (caseless)";
        if (PRINTHEX(ch))
          fprintf(outfile, "First char = \'%c\'%s\n", ch, caseless);
        else
          fprintf(outfile, "First char = %d%s\n", ch, caseless);
        }

      if (need_char < 0)
        {
        fprintf(outfile, "No need char\n");
        }
      else
        {
        int ch = need_char & 255;
        const char *caseless = ((need_char & REQ_CASELESS) == 0)?
          "" : " (caseless)";
        if (PRINTHEX(ch))
          fprintf(outfile, "Need char = \'%c\'%s\n", ch, caseless);
        else
          fprintf(outfile, "Need char = %d%s\n", ch, caseless);
        }

      /* Don't output study size; at present it is in any case a fixed
      value, but it varies, depending on the computer architecture, and
      so messes up the test suite. (And with the /F option, it might be
      flipped.) */

      if (do_study)
        {
        if (extra == NULL)
          fprintf(outfile, "Study returned NULL\n");
        else
          {
          uschar *start_bits = NULL;
          new_info(re, extra, PCRE_INFO_FIRSTTABLE, &start_bits);

          if (start_bits == NULL)
            fprintf(outfile, "No starting byte set\n");
          else
            {
            int i;
            int c = 24;
            fprintf(outfile, "Starting byte set: ");
            for (i = 0; i < 256; i++)
              {
              if ((start_bits[i/8] & (1<<(i&7))) != 0)
                {
                if (c > 75)
                  {
                  fprintf(outfile, "\n  ");
                  c = 2;
                  }
                if (PRINTHEX(i) && i != ' ')
                  {
                  fprintf(outfile, "%c ", i);
                  c += 2;
                  }
                else
                  {
                  fprintf(outfile, "\\x%02x ", i);
                  c += 5;
                  }
                }
              }
            fprintf(outfile, "\n");
            }
          }
        }
      }

    /* If the '>' option was present, we write out the regex to a file, and
    that is all. The first 8 bytes of the file are the regex length and then
    the study length, in big-endian order. */

    if (to_file != NULL)
      {
      FILE *f = fopen((char *)to_file, "wb");
      if (f == NULL)
        {
        fprintf(outfile, "Unable to open %s: %s\n", to_file, strerror(errno));
        }
      else
        {
        uschar sbuf[8];
        sbuf[0] = (uschar)((true_size >> 24) & 255);
        sbuf[1] = (uschar)((true_size >> 16) & 255);
        sbuf[2] = (uschar)((true_size >>  8) & 255);
        sbuf[3] = (uschar)((true_size) & 255);

        sbuf[4] = (uschar)((true_study_size >> 24) & 255);
        sbuf[5] = (uschar)((true_study_size >> 16) & 255);
        sbuf[6] = (uschar)((true_study_size >>  8) & 255);
        sbuf[7] = (uschar)((true_study_size) & 255);

        if (fwrite(sbuf, 1, 8, f) < 8 ||
            fwrite(re, 1, true_size, f) < true_size)
          {
          fprintf(outfile, "Write error on %s: %s\n", to_file, strerror(errno));
          }
        else
          {
          fprintf(outfile, "Compiled regex written to %s\n", to_file);
          if (extra != NULL)
            {
            if (fwrite(extra->study_data, 1, true_study_size, f) <
                true_study_size)
              {
              fprintf(outfile, "Write error on %s: %s\n", to_file,
                strerror(errno));
              }
            else fprintf(outfile, "Study data written to %s\n", to_file);

            }
          }
        fclose(f);
        }

      new_free(re);
      if (extra != NULL) new_free(extra);
      if (tables != NULL) new_free((void *)tables);
      continue;  /* With next regex */
      }
    }        /* End of non-POSIX compile */

  /* Read data lines and test them */

  for (;;)
    {
    uschar *q;
    uschar *bptr;
    int *use_offsets = offsets;
    int use_size_offsets = size_offsets;
    int callout_data = 0;
    int callout_data_set = 0;
    int count, c;
    int copystrings = 0;
    int find_match_limit = 0;
    int getstrings = 0;
    int getlist = 0;
    int gmatched = 0;
    int start_offset = 0;
    int g_notempty = 0;
    int use_dfa = 0;

    options = 0;

    *copynames = 0;
    *getnames = 0;

    copynamesptr = copynames;
    getnamesptr = getnames;

    pcre_callout = callout;
    first_callout = 1;
    callout_extra = 0;
    callout_count = 0;
    callout_fail_count = 999999;
    callout_fail_id = -1;
    show_malloc = 0;

    if (extra != NULL) extra->flags &=
      ~(PCRE_EXTRA_MATCH_LIMIT|PCRE_EXTRA_MATCH_LIMIT_RECURSION);

    len = 0;
    for (;;)
      {
      if (infile == stdin) printf("data> ");
      if (extend_inputline(infile, buffer + len) == NULL)
        {
        if (len > 0) break;
        done = 1;
        goto CONTINUE;
        }
      if (infile != stdin) fprintf(outfile, "%s", (char *)buffer);
      len = (int)strlen((char *)buffer);
      if (buffer[len-1] == '\n') break;
      }

    while (len > 0 && isspace(buffer[len-1])) len--;
    buffer[len] = 0;
    if (len == 0) break;

    p = buffer;
    while (isspace(*p)) p++;

    bptr = q = dbuffer;
    while ((c = *p++) != 0)
      {
      int i = 0;
      int n = 0;

      if (c == '\\') switch ((c = *p++))
        {
        case 'a': c =    7; break;
        case 'b': c = '\b'; break;
        case 'e': c =   27; break;
        case 'f': c = '\f'; break;
        case 'n': c = '\n'; break;
        case 'r': c = '\r'; break;
        case 't': c = '\t'; break;
        case 'v': c = '\v'; break;

        case '0': case '1': case '2': case '3':
        case '4': case '5': case '6': case '7':
        c -= '0';
        while (i++ < 2 && isdigit(*p) && *p != '8' && *p != '9')
          c = c * 8 + *p++ - '0';

#if !defined NOUTF8
        if (use_utf8 && c > 255)
          {
          unsigned char buff8[8];
          int ii, utn;
          utn = ord2utf8(c, buff8);
          for (ii = 0; ii < utn - 1; ii++) *q++ = buff8[ii];
          c = buff8[ii];   /* Last byte */
          }
#endif
        break;

        case 'x':

        /* Handle \x{..} specially - new Perl thing for utf8 */

#if !defined NOUTF8
        if (*p == '{')
          {
          unsigned char *pt = p;
          c = 0;
          while (isxdigit(*(++pt)))
            c = c * 16 + tolower(*pt) - ((isdigit(*pt))? '0' : 'W');
          if (*pt == '}')
            {
            unsigned char buff8[8];
            int ii, utn;
            utn = ord2utf8(c, buff8);
            for (ii = 0; ii < utn - 1; ii++) *q++ = buff8[ii];
            c = buff8[ii];   /* Last byte */
            p = pt + 1;
            break;
            }
          /* Not correct form; fall through */
          }
#endif

        /* Ordinary \x */

        c = 0;
        while (i++ < 2 && isxdigit(*p))
          {
          c = c * 16 + tolower(*p) - ((isdigit(*p))? '0' : 'W');
          p++;
          }
        break;

        case 0:   /* \ followed by EOF allows for an empty line */
        p--;
        continue;

        case '>':
        while(isdigit(*p)) start_offset = start_offset * 10 + *p++ - '0';
        continue;

        case 'A':  /* Option setting */
        options |= PCRE_ANCHORED;
        continue;

        case 'B':
        options |= PCRE_NOTBOL;
        continue;

        case 'C':
        if (isdigit(*p))    /* Set copy string */
          {
          while(isdigit(*p)) n = n * 10 + *p++ - '0';
          copystrings |= 1 << n;
          }
        else if (isalnum(*p))
          {
          uschar *npp = copynamesptr;
          while (isalnum(*p)) *npp++ = *p++;
          *npp++ = 0;
          *npp = 0;
          n = pcre_get_stringnumber(re, (char *)copynamesptr);
          if (n < 0)
            fprintf(outfile, "no parentheses with name \"%s\"\n", copynamesptr);
          copynamesptr = npp;
          }
        else if (*p == '+')
          {
          callout_extra = 1;
          p++;
          }
        else if (*p == '-')
          {
          pcre_callout = NULL;
          p++;
          }
        else if (*p == '!')
          {
          callout_fail_id = 0;
          p++;
          while(isdigit(*p))
            callout_fail_id = callout_fail_id * 10 + *p++ - '0';
          callout_fail_count = 0;
          if (*p == '!')
            {
            p++;
            while(isdigit(*p))
              callout_fail_count = callout_fail_count * 10 + *p++ - '0';
            }
          }
        else if (*p == '*')
          {
          int sign = 1;
          callout_data = 0;
          if (*(++p) == '-') { sign = -1; p++; }
          while(isdigit(*p))
            callout_data = callout_data * 10 + *p++ - '0';
          callout_data *= sign;
          callout_data_set = 1;
          }
        continue;

#if !defined NODFA
        case 'D':
#if !defined NOPOSIX
        if (posix || do_posix)
          printf("** Can't use dfa matching in POSIX mode: \\D ignored\n");
        else
#endif
          use_dfa = 1;
        continue;

        case 'F':
        options |= PCRE_DFA_SHORTEST;
        continue;
#endif

        case 'G':
        if (isdigit(*p))
          {
          while(isdigit(*p)) n = n * 10 + *p++ - '0';
          getstrings |= 1 << n;
          }
        else if (isalnum(*p))
          {
          uschar *npp = getnamesptr;
          while (isalnum(*p)) *npp++ = *p++;
          *npp++ = 0;
          *npp = 0;
          n = pcre_get_stringnumber(re, (char *)getnamesptr);
          if (n < 0)
            fprintf(outfile, "no parentheses with name \"%s\"\n", getnamesptr);
          getnamesptr = npp;
          }
        continue;

        case 'L':
        getlist = 1;
        continue;

        case 'M':
        find_match_limit = 1;
        continue;

        case 'N':
        options |= PCRE_NOTEMPTY;
        continue;

        case 'O':
        while(isdigit(*p)) n = n * 10 + *p++ - '0';
        if (n > size_offsets_max)
          {
          size_offsets_max = n;
          free(offsets);
          use_offsets = offsets = (int *)malloc(size_offsets_max * sizeof(int));
          if (offsets == NULL)
            {
            printf("** Failed to get %d bytes of memory for offsets vector\n",
              (int)(size_offsets_max * sizeof(int)));
            yield = 1;
            goto EXIT;
            }
          }
        use_size_offsets = n;
        if (n == 0) use_offsets = NULL;   /* Ensures it can't write to it */
        continue;

        case 'P':
        options |= PCRE_PARTIAL;
        continue;

        case 'Q':
        while(isdigit(*p)) n = n * 10 + *p++ - '0';
        if (extra == NULL)
          {
          extra = (pcre_extra *)malloc(sizeof(pcre_extra));
          extra->flags = 0;
          }
        extra->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
        extra->match_limit_recursion = n;
        continue;

        case 'q':
        while(isdigit(*p)) n = n * 10 + *p++ - '0';
        if (extra == NULL)
          {
          extra = (pcre_extra *)malloc(sizeof(pcre_extra));
          extra->flags = 0;
          }
        extra->flags |= PCRE_EXTRA_MATCH_LIMIT;
        extra->match_limit = n;
        continue;

#if !defined NODFA
        case 'R':
        options |= PCRE_DFA_RESTART;
        continue;
#endif

        case 'S':
        show_malloc = 1;
        continue;

        case 'Z':
        options |= PCRE_NOTEOL;
        continue;

        case '?':
        options |= PCRE_NO_UTF8_CHECK;
        continue;

        case '<':
          {
          int x = check_newline(p, outfile);
          if (x == 0) goto NEXT_DATA;
          options |= x;
          while (*p++ != '>');
          }
        continue;
        }
      *q++ = c;
      }
    *q = 0;
    len = q - dbuffer;

    if ((all_use_dfa || use_dfa) && find_match_limit)
      {
      printf("**Match limit not relevant for DFA matching: ignored\n");
      find_match_limit = 0;
      }

    /* Handle matching via the POSIX interface, which does not
    support timing or playing with the match limit or callout data. */

#if !defined NOPOSIX
    if (posix || do_posix)
      {
      int rc;
      int eflags = 0;
      regmatch_t *pmatch = NULL;
      if (use_size_offsets > 0)
        pmatch = (regmatch_t *)malloc(sizeof(regmatch_t) * use_size_offsets);
      if ((options & PCRE_NOTBOL) != 0) eflags |= REG_NOTBOL;
      if ((options & PCRE_NOTEOL) != 0) eflags |= REG_NOTEOL;

      rc = regexec(&preg, (const char *)bptr, use_size_offsets, pmatch, eflags);

      if (rc != 0)
        {
        (void)regerror(rc, &preg, (char *)buffer, buffer_size);
        fprintf(outfile, "No match: POSIX code %d: %s\n", rc, buffer);
        }
      else if ((((const pcre *)preg.re_pcre)->options & PCRE_NO_AUTO_CAPTURE)
              != 0)
        {
        fprintf(outfile, "Matched with REG_NOSUB\n");
        }
      else
        {
        size_t i;
        for (i = 0; i < (size_t)use_size_offsets; i++)
          {
          if (pmatch[i].rm_so >= 0)
            {
            fprintf(outfile, "%2d: ", (int)i);
            (void)pchars(dbuffer + pmatch[i].rm_so,
              pmatch[i].rm_eo - pmatch[i].rm_so, outfile);
            fprintf(outfile, "\n");
            if (i == 0 && do_showrest)
              {
              fprintf(outfile, " 0+ ");
              (void)pchars(dbuffer + pmatch[i].rm_eo, len - pmatch[i].rm_eo,
                outfile);
              fprintf(outfile, "\n");
              }
            }
          }
        }
      free(pmatch);
      }

    /* Handle matching via the native interface - repeats for /g and /G */

    else
#endif  /* !defined NOPOSIX */

    for (;; gmatched++)    /* Loop for /g or /G */
      {
      if (timeitm > 0)
        {
        register int i;
        clock_t time_taken;
        clock_t start_time = clock();

#if !defined NODFA
        if (all_use_dfa || use_dfa)
          {
          int workspace[1000];
          for (i = 0; i < timeitm; i++)
            count = pcre_dfa_exec(re, NULL, (char *)bptr, len, start_offset,
              options | g_notempty, use_offsets, use_size_offsets, workspace,
              sizeof(workspace)/sizeof(int));
          }
        else
#endif

        for (i = 0; i < timeitm; i++)
          count = pcre_exec(re, extra, (char *)bptr, len,
            start_offset, options | g_notempty, use_offsets, use_size_offsets);

        time_taken = clock() - start_time;
        fprintf(outfile, "Execute time %.4f milliseconds\n",
          (((double)time_taken * 1000.0) / (double)timeitm) /
            (double)CLOCKS_PER_SEC);
        }

      /* If find_match_limit is set, we want to do repeated matches with
      varying limits in order to find the minimum value for the match limit and
      for the recursion limit. */

      if (find_match_limit)
        {
        if (extra == NULL)
          {
          extra = (pcre_extra *)malloc(sizeof(pcre_extra));
          extra->flags = 0;
          }

        (void)check_match_limit(re, extra, bptr, len, start_offset,
          options|g_notempty, use_offsets, use_size_offsets,
          PCRE_EXTRA_MATCH_LIMIT, &(extra->match_limit),
          PCRE_ERROR_MATCHLIMIT, "match()");

        count = check_match_limit(re, extra, bptr, len, start_offset,
          options|g_notempty, use_offsets, use_size_offsets,
          PCRE_EXTRA_MATCH_LIMIT_RECURSION, &(extra->match_limit_recursion),
          PCRE_ERROR_RECURSIONLIMIT, "match() recursion");
        }

      /* If callout_data is set, use the interface with additional data */

      else if (callout_data_set)
        {
        if (extra == NULL)
          {
          extra = (pcre_extra *)malloc(sizeof(pcre_extra));
          extra->flags = 0;
          }
        extra->flags |= PCRE_EXTRA_CALLOUT_DATA;
        extra->callout_data = &callout_data;
        count = pcre_exec(re, extra, (char *)bptr, len, start_offset,
          options | g_notempty, use_offsets, use_size_offsets);
        extra->flags &= ~PCRE_EXTRA_CALLOUT_DATA;
        }

      /* The normal case is just to do the match once, with the default
      value of match_limit. */

#if !defined NODFA
      else if (all_use_dfa || use_dfa)
        {
        int workspace[1000];
        count = pcre_dfa_exec(re, NULL, (char *)bptr, len, start_offset,
          options | g_notempty, use_offsets, use_size_offsets, workspace,
          sizeof(workspace)/sizeof(int));
        if (count == 0)
          {
          fprintf(outfile, "Matched, but too many subsidiary matches\n");
          count = use_size_offsets/2;
          }
        }
#endif

      else
        {
        count = pcre_exec(re, extra, (char *)bptr, len,
          start_offset, options | g_notempty, use_offsets, use_size_offsets);
        if (count == 0)
          {
          fprintf(outfile, "Matched, but too many substrings\n");
          count = use_size_offsets/3;
          }
        }

      /* Matched */

      if (count >= 0)
        {
        int i, maxcount;

#if !defined NODFA
        if (all_use_dfa || use_dfa) maxcount = use_size_offsets/2; else
#endif
          maxcount = use_size_offsets/3;

        /* This is a check against a lunatic return value. */

        if (count > maxcount)
          {
          fprintf(outfile,
            "** PCRE error: returned count %d is too big for offset size %d\n",
            count, use_size_offsets);
          count = use_size_offsets/3;
          if (do_g || do_G)
            {
            fprintf(outfile, "** /%c loop abandoned\n", do_g? 'g' : 'G');
            do_g = do_G = FALSE;        /* Break g/G loop */
            }
          }

        for (i = 0; i < count * 2; i += 2)
          {
          if (use_offsets[i] < 0)
            fprintf(outfile, "%2d: <unset>\n", i/2);
          else
            {
            fprintf(outfile, "%2d: ", i/2);
            (void)pchars(bptr + use_offsets[i],
              use_offsets[i+1] - use_offsets[i], outfile);
            fprintf(outfile, "\n");
            if (i == 0)
              {
              if (do_showrest)
                {
                fprintf(outfile, " 0+ ");
                (void)pchars(bptr + use_offsets[i+1], len - use_offsets[i+1],
                  outfile);
                fprintf(outfile, "\n");
                }
              }
            }
          }

        for (i = 0; i < 32; i++)
          {
          if ((copystrings & (1 << i)) != 0)
            {
            char copybuffer[256];
            int rc = pcre_copy_substring((char *)bptr, use_offsets, count,
              i, copybuffer, sizeof(copybuffer));
            if (rc < 0)
              fprintf(outfile, "copy substring %d failed %d\n", i, rc);
            else
              fprintf(outfile, "%2dC %s (%d)\n", i, copybuffer, rc);
            }
          }

        for (copynamesptr = copynames;
             *copynamesptr != 0;
             copynamesptr += (int)strlen((char*)copynamesptr) + 1)
          {
          char copybuffer[256];
          int rc = pcre_copy_named_substring(re, (char *)bptr, use_offsets,
            count, (char *)copynamesptr, copybuffer, sizeof(copybuffer));
          if (rc < 0)
            fprintf(outfile, "copy substring %s failed %d\n", copynamesptr, rc);
          else
            fprintf(outfile, "  C %s (%d) %s\n", copybuffer, rc, copynamesptr);
          }

        for (i = 0; i < 32; i++)
          {
          if ((getstrings & (1 << i)) != 0)
            {
            const char *substring;
            int rc = pcre_get_substring((char *)bptr, use_offsets, count,
              i, &substring);
            if (rc < 0)
              fprintf(outfile, "get substring %d failed %d\n", i, rc);
            else
              {
              fprintf(outfile, "%2dG %s (%d)\n", i, substring, rc);
              pcre_free_substring(substring);
              }
            }
          }

        for (getnamesptr = getnames;
             *getnamesptr != 0;
             getnamesptr += (int)strlen((char*)getnamesptr) + 1)
          {
          const char *substring;
          int rc = pcre_get_named_substring(re, (char *)bptr, use_offsets,
            count, (char *)getnamesptr, &substring);
          if (rc < 0)
            fprintf(outfile, "copy substring %s failed %d\n", getnamesptr, rc);
          else
            {
            fprintf(outfile, "  G %s (%d) %s\n", substring, rc, getnamesptr);
            pcre_free_substring(substring);
            }
          }

        if (getlist)
          {
          const char **stringlist;
          int rc = pcre_get_substring_list((char *)bptr, use_offsets, count,
            &stringlist);
          if (rc < 0)
            fprintf(outfile, "get substring list failed %d\n", rc);
          else
            {
            for (i = 0; i < count; i++)
              fprintf(outfile, "%2dL %s\n", i, stringlist[i]);
            if (stringlist[i] != NULL)
              fprintf(outfile, "string list not terminated by NULL\n");
            /* free((void *)stringlist); */
            pcre_free_substring_list(stringlist);
            }
          }
        }

      /* There was a partial match */

      else if (count == PCRE_ERROR_PARTIAL)
        {
        fprintf(outfile, "Partial match");
#if !defined NODFA
        if ((all_use_dfa || use_dfa) && use_size_offsets > 2)
          fprintf(outfile, ": %.*s", use_offsets[1] - use_offsets[0],
            bptr + use_offsets[0]);
#endif
        fprintf(outfile, "\n");
        break;  /* Out of the /g loop */
        }

      /* Failed to match. If this is a /g or /G loop and we previously set
      g_notempty after a null match, this is not necessarily the end. We want
      to advance the start offset, and continue. We won't be at the end of the
      string - that was checked before setting g_notempty.

      Complication arises in the case when the newline option is "any" or
      "anycrlf". If the previous match was at the end of a line terminated by
      CRLF, an advance of one character just passes the \r, whereas we should
      prefer the longer newline sequence, as does the code in pcre_exec().
      Fudge the offset value to achieve this.

      Otherwise, in the case of UTF-8 matching, the advance must be one
      character, not one byte. */

      else
        {
        if (g_notempty != 0)
          {
          int onechar = 1;
          unsigned int obits = ((real_pcre *)re)->options;
          use_offsets[0] = start_offset;
          if ((obits & PCRE_NEWLINE_BITS) == 0)
            {
            int d;
            (void)pcre_config(PCRE_CONFIG_NEWLINE, &d);
            obits = (d == '\r')? PCRE_NEWLINE_CR :
                    (d == '\n')? PCRE_NEWLINE_LF :
                    (d == ('\r'<<8 | '\n'))? PCRE_NEWLINE_CRLF :
                    (d == -2)? PCRE_NEWLINE_ANYCRLF :
                    (d == -1)? PCRE_NEWLINE_ANY : 0;
            }
          if (((obits & PCRE_NEWLINE_BITS) == PCRE_NEWLINE_ANY ||
               (obits & PCRE_NEWLINE_BITS) == PCRE_NEWLINE_ANYCRLF)
              &&
              start_offset < len - 1 &&
              bptr[start_offset] == '\r' &&
              bptr[start_offset+1] == '\n')
            onechar++;
          else if (use_utf8)
            {
            while (start_offset + onechar < len)
              {
              int tb = bptr[start_offset+onechar];
              if (tb <= 127) break;
              tb &= 0xc0;
              if (tb != 0 && tb != 0xc0) onechar++;
              }
            }
          use_offsets[1] = start_offset + onechar;
          }
        else
          {
          if (count == PCRE_ERROR_NOMATCH)
            {
            if (gmatched == 0) fprintf(outfile, "No match\n");
            }
          else fprintf(outfile, "Error %d\n", count);
          break;  /* Out of the /g loop */
          }
        }

      /* If not /g or /G we are done */

      if (!do_g && !do_G) break;

      /* If we have matched an empty string, first check to see if we are at
      the end of the subject. If so, the /g loop is over. Otherwise, mimic
      what Perl's /g options does. This turns out to be rather cunning. First
      we set PCRE_NOTEMPTY and PCRE_ANCHORED and try the match again at the
      same point. If this fails (picked up above) we advance to the next
      character. */

      g_notempty = 0;

      if (use_offsets[0] == use_offsets[1])
        {
        if (use_offsets[0] == len) break;
        g_notempty = PCRE_NOTEMPTY | PCRE_ANCHORED;
        }

      /* For /g, update the start offset, leaving the rest alone */

      if (do_g) start_offset = use_offsets[1];

      /* For /G, update the pointer and length */

      else
        {
        bptr += use_offsets[1];
        len -= use_offsets[1];
        }
      }  /* End of loop for /g and /G */

    NEXT_DATA: continue;
    }    /* End of loop for data lines */

  CONTINUE:

#if !defined NOPOSIX
  if (posix || do_posix) regfree(&preg);
#endif

  if (re != NULL) new_free(re);
  if (extra != NULL) new_free(extra);
  if (tables != NULL)
    {
    new_free((void *)tables);
    setlocale(LC_CTYPE, "C");
    locale_set = 0;
    }
  }

if (infile == stdin) fprintf(outfile, "\n");

EXIT:

if (infile != NULL && infile != stdin) fclose(infile);
if (outfile != NULL && outfile != stdout) fclose(outfile);

free(buffer);
free(dbuffer);
free(pbuffer);
free(offsets);

return yield;
}

/* End of pcretest.c */