1 #include <u.h>
2 #include <libc.h>
3 #include <bio.h>
4 #include <regexp.h>
5 #include "/sys/src/libregexp/regcomp.h"
6 #include "dfa.h"
7 
8 #define DUMP
9 
10 void
11 dump(Dreprog *pp)
12 {
13 	int i, j;
14 	Dreinst *l;
15 
16 	print("start %ld %ld %ld %ld\n",
17 		pp->start[0]-pp->inst,
18 		pp->start[1]-pp->inst,
19 		pp->start[2]-pp->inst,
20 		pp->start[3]-pp->inst);
21 
22 	for(i=0; i<pp->ninst; i++){
23 		l = &pp->inst[i];
24 		print("%d:", i);
25 		for(j=0; j<l->nc; j++){
26 			print(" [");
27 			if(j == 0)
28 				if(l->c[j].start > 1)
29 					print("<bad start %d>\n", l->c[j].start);
30 			if(j != 0)
31 				print("%C%s", l->c[j].start&0xFFFF, (l->c[j].start&0x10000) ? "$" : "");
32 			print("-");
33 			if(j != l->nc-1)
34 				print("%C%s", (l->c[j+1].start&0xFFFF)-1, (l->c[j+1].start&0x10000) ? "$" : "");
35 			print("] %ld", l->c[j].next - pp->inst);
36 		}
37 		if(l->isfinal)
38 			print(" final");
39 		if(l->isloop)
40 			print(" loop");
41 		print("\n");
42 	}
43 }
44 
45 
46 void
47 main(int argc, char **argv)
48 {
49 	int i;
50 	Reprog *p;
51 	Dreprog *dp;
52 
53 	i = 1;
54 		p = regcomp(argv[i]);
55 		if(p == 0){
56 			print("=== %s: bad regexp\n", argv[i]);
57 		}
58 	//	print("=== %s\n", argv[i]);
59 	//	rdump(p);
60 		dp = dregcvt(p);
61 		print("=== dfa\n");
62 		dump(dp);
63 	
64 	for(i=2; i<argc; i++)
65 		print("match %d\n", dregexec(dp, argv[i], 1));
66 	exits(0);
67 }