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bk@work.mysql.com
243
regex/debug.c
Normal file
243
regex/debug.c
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@ -0,0 +1,243 @@
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#include <global.h>
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#include <m_ctype.h>
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#include <m_string.h>
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#include <sys/types.h>
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#include <regex.h>
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#include "utils.h"
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#include "regex2.h"
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#include "debug.ih"
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/* Added extra paramter to regchar to remove static buffer ; Monty 96.11.27 */
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/*
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- regprint - print a regexp for debugging
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== void regprint(regex_t *r, FILE *d);
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*/
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void
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regprint(r, d)
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regex_t *r;
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FILE *d;
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{
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register struct re_guts *g = r->re_g;
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register int i;
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register int c;
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register int last;
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int nincat[NC];
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char buf[10];
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fprintf(d, "%ld states, %d categories", (long)g->nstates,
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g->ncategories);
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fprintf(d, ", first %ld last %ld", (long)g->firststate,
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(long)g->laststate);
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if (g->iflags&USEBOL)
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fprintf(d, ", USEBOL");
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if (g->iflags&USEEOL)
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fprintf(d, ", USEEOL");
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if (g->iflags&BAD)
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fprintf(d, ", BAD");
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if (g->nsub > 0)
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fprintf(d, ", nsub=%ld", (long)g->nsub);
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if (g->must != NULL)
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fprintf(d, ", must(%ld) `%*s'", (long)g->mlen, (int)g->mlen,
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g->must);
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if (g->backrefs)
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fprintf(d, ", backrefs");
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if (g->nplus > 0)
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fprintf(d, ", nplus %ld", (long)g->nplus);
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fprintf(d, "\n");
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s_print(g, d);
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for (i = 0; i < g->ncategories; i++) {
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nincat[i] = 0;
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for (c = CHAR_MIN; c <= CHAR_MAX; c++)
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if (g->categories[c] == i)
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nincat[i]++;
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}
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fprintf(d, "cc0#%d", nincat[0]);
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for (i = 1; i < g->ncategories; i++)
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if (nincat[i] == 1) {
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for (c = CHAR_MIN; c <= CHAR_MAX; c++)
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if (g->categories[c] == i)
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break;
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fprintf(d, ", %d=%s", i, regchar(c,buf));
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}
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fprintf(d, "\n");
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for (i = 1; i < g->ncategories; i++)
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if (nincat[i] != 1) {
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fprintf(d, "cc%d\t", i);
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last = -1;
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for (c = CHAR_MIN; c <= CHAR_MAX+1; c++) /* +1 does flush */
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if (c <= CHAR_MAX && g->categories[c] == i) {
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if (last < 0) {
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fprintf(d, "%s", regchar(c,buf));
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last = c;
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}
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} else {
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if (last >= 0) {
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if (last != c-1)
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fprintf(d, "-%s",
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regchar(c-1,buf));
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last = -1;
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}
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}
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fprintf(d, "\n");
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}
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}
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/*
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- s_print - print the strip for debugging
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== static void s_print(register struct re_guts *g, FILE *d);
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*/
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static void
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s_print(g, d)
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register struct re_guts *g;
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FILE *d;
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{
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register sop *s;
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register cset *cs;
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register int i;
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register int done = 0;
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register sop opnd;
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register int col = 0;
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register int last;
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register sopno offset = 2;
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char buf[10];
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# define GAP() { if (offset % 5 == 0) { \
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if (col > 40) { \
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fprintf(d, "\n\t"); \
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col = 0; \
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} else { \
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fprintf(d, " "); \
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col++; \
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} \
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} else \
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col++; \
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offset++; \
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}
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if (OP(g->strip[0]) != OEND)
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fprintf(d, "missing initial OEND!\n");
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for (s = &g->strip[1]; !done; s++) {
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opnd = OPND(*s);
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switch (OP(*s)) {
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case OEND:
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fprintf(d, "\n");
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done = 1;
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break;
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case OCHAR:
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if (strchr("\\|()^$.[+*?{}!<> ", (char)opnd) != NULL)
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fprintf(d, "\\%c", (char)opnd);
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else
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fprintf(d, "%s", regchar((char)opnd,buf));
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break;
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case OBOL:
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fprintf(d, "^");
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break;
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case OEOL:
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fprintf(d, "$");
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break;
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case OBOW:
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fprintf(d, "\\{");
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break;
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case OEOW:
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fprintf(d, "\\}");
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break;
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case OANY:
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fprintf(d, ".");
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break;
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case OANYOF:
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fprintf(d, "[(%ld)", (long)opnd);
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cs = &g->sets[opnd];
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last = -1;
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for (i = 0; i < g->csetsize+1; i++) /* +1 flushes */
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if (CHIN(cs, i) && i < g->csetsize) {
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if (last < 0) {
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fprintf(d, "%s", regchar(i,buf));
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last = i;
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}
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} else {
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if (last >= 0) {
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if (last != i-1)
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fprintf(d, "-%s",
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regchar(i-1,buf));
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last = -1;
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}
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}
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fprintf(d, "]");
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break;
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case OBACK_:
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fprintf(d, "(\\<%ld>", (long)opnd);
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break;
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case O_BACK:
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fprintf(d, "<%ld>\\)", (long)opnd);
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break;
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case OPLUS_:
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fprintf(d, "(+");
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if (OP(*(s+opnd)) != O_PLUS)
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fprintf(d, "<%ld>", (long)opnd);
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break;
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case O_PLUS:
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if (OP(*(s-opnd)) != OPLUS_)
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fprintf(d, "<%ld>", (long)opnd);
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fprintf(d, "+)");
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break;
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case OQUEST_:
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fprintf(d, "(?");
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if (OP(*(s+opnd)) != O_QUEST)
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fprintf(d, "<%ld>", (long)opnd);
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break;
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case O_QUEST:
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if (OP(*(s-opnd)) != OQUEST_)
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fprintf(d, "<%ld>", (long)opnd);
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fprintf(d, "?)");
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break;
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case OLPAREN:
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fprintf(d, "((<%ld>", (long)opnd);
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break;
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case ORPAREN:
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fprintf(d, "<%ld>))", (long)opnd);
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break;
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case OCH_:
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fprintf(d, "<");
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if (OP(*(s+opnd)) != OOR2)
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fprintf(d, "<%ld>", (long)opnd);
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break;
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case OOR1:
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if (OP(*(s-opnd)) != OOR1 && OP(*(s-opnd)) != OCH_)
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fprintf(d, "<%ld>", (long)opnd);
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fprintf(d, "|");
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break;
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case OOR2:
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fprintf(d, "|");
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if (OP(*(s+opnd)) != OOR2 && OP(*(s+opnd)) != O_CH)
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fprintf(d, "<%ld>", (long)opnd);
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break;
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case O_CH:
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if (OP(*(s-opnd)) != OOR1)
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fprintf(d, "<%ld>", (long)opnd);
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fprintf(d, ">");
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break;
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default:
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fprintf(d, "!%d(%d)!", OP(*s), opnd);
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break;
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}
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if (!done)
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GAP();
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}
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}
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/*
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- regchar - make a character printable
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== static char *regchar(int ch);
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*/
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static char * /* -> representation */
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regchar(ch,buf)
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int ch;
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char *buf;
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{
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if (isprint(ch) || ch == ' ')
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sprintf(buf, "%c", ch);
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else
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sprintf(buf, "\\%o", ch);
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return(buf);
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}
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