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- #include <u.h>
- #include <libc.h>
- #include <bio.h>
- #include <regexp.h>
- #include "/sys/src/libregexp/regcomp.h"
- #include "dfa.h"
- #define DUMP
- void
- dump(Dreprog *pp)
- {
- int i, j;
- Dreinst *l;
- print("start %ld %ld %ld %ld\n",
- pp->start[0]-pp->inst,
- pp->start[1]-pp->inst,
- pp->start[2]-pp->inst,
- pp->start[3]-pp->inst);
- for(i=0; i<pp->ninst; i++){
- l = &pp->inst[i];
- print("%d:", i);
- for(j=0; j<l->nc; j++){
- print(" [");
- if(j == 0)
- if(l->c[j].start > 1)
- print("<bad start %d>\n", l->c[j].start);
- if(j != 0)
- print("%C%s", l->c[j].start&0xFFFF, (l->c[j].start&0x10000) ? "$" : "");
- print("-");
- if(j != l->nc-1)
- print("%C%s", (l->c[j+1].start&0xFFFF)-1, (l->c[j+1].start&0x10000) ? "$" : "");
- print("] %ld", l->c[j].next - pp->inst);
- }
- if(l->isfinal)
- print(" final");
- if(l->isloop)
- print(" loop");
- print("\n");
- }
- }
- void
- main(int argc, char **argv)
- {
- int i;
- Reprog *p;
- Dreprog *dp;
- i = 1;
- p = regcomp(argv[i]);
- if(p == 0){
- print("=== %s: bad regexp\n", argv[i]);
- }
- // print("=== %s\n", argv[i]);
- // rdump(p);
- dp = dregcvt(p);
- print("=== dfa\n");
- dump(dp);
-
- for(i=2; i<argc; i++)
- print("match %d\n", dregexec(dp, argv[i], 1));
- exits(0);
- }
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