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Differential D10315 Diff 31744 head/lib/libc/regex/regcomp.c

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head/lib/libc/regex/regcomp.c

Show First 20 Lines • Show All 406 Lines • ▼ Show 20 Lines case '$':
p->g->neol++; p->g->neol++;
break; break;
case '|': case '|':
SETERROR(REG_EMPTY); SETERROR(REG_EMPTY);
break; break;
case '*': case '*':
case '+': case '+':
case '?': case '?':
case '{':
SETERROR(REG_BADRPT); SETERROR(REG_BADRPT);
break; break;
case '.': case '.':
if (p->g->cflags&REG_NEWLINE) if (p->g->cflags&REG_NEWLINE)
nonnewline(p); nonnewline(p);
else else
EMIT(OANY, 0); EMIT(OANY, 0);
break; break;
Show All 10 Lines case '\\':
case '>': case '>':
EMIT(OEOW, 0); EMIT(OEOW, 0);
break; break;
default: default:
ordinary(p, wc); ordinary(p, wc);
break; break;
} }
break; break;
case '{': /* okay as ordinary except if digit follows */
(void)REQUIRE(!MORE() || !isdigit((uch)PEEK()), REG_BADRPT);
/* FALLTHROUGH */
default: default:
if (p->error != 0) if (p->error != 0)
return (false); return (false);
p->next--; p->next--;
wc = WGETNEXT(); wc = WGETNEXT();
ordinary(p, wc); ordinary(p, wc);
break; break;
} }
if (!MORE()) if (!MORE())
return (false); return (false);
c = PEEK(); c = PEEK();
/* we call { a repetition if followed by a digit */ /* we call { a repetition if followed by a digit */
if (!( c == '*' || c == '+' || c == '?' || if (!( c == '*' || c == '+' || c == '?' || c == '{'))
(c == '{' && MORE2() && isdigit((uch)PEEK2())) ))
return (false); /* no repetition, we're done */ return (false); /* no repetition, we're done */
else if (c == '{')
(void)REQUIRE(MORE2() && \
(isdigit((uch)PEEK2()) || PEEK2() == ','), REG_BADRPT);
NEXT(); NEXT();
(void)REQUIRE(!wascaret, REG_BADRPT); (void)REQUIRE(!wascaret, REG_BADRPT);
switch (c) { switch (c) {
case '*': /* implemented as +? */ case '*': /* implemented as +? */
/* this case does not require the (y|) trick, noKLUDGE */ /* this case does not require the (y|) trick, noKLUDGE */
INSERT(OPLUS_, pos); INSERT(OPLUS_, pos);
ASTERN(O_PLUS, pos); ASTERN(O_PLUS, pos);
▲ Show 20 Lines • Show All 284 Lines • ▼ Show 20 Lines case BACKSL|'(':
if (subno < NPAREN) { if (subno < NPAREN) {
p->pend[subno] = HERE(); p->pend[subno] = HERE();
assert(p->pend[subno] != 0); assert(p->pend[subno] != 0);
} }
EMIT(ORPAREN, subno); EMIT(ORPAREN, subno);
(void)REQUIRE(EATTWO('\\', ')'), REG_EPAREN); (void)REQUIRE(EATTWO('\\', ')'), REG_EPAREN);
break; break;
case BACKSL|')': /* should not get here -- must be user */ case BACKSL|')': /* should not get here -- must be user */
case BACKSL|'}':
SETERROR(REG_EPAREN); SETERROR(REG_EPAREN);
break; break;
case BACKSL|'1': case BACKSL|'1':
case BACKSL|'2': case BACKSL|'2':
case BACKSL|'3': case BACKSL|'3':
case BACKSL|'4': case BACKSL|'4':
case BACKSL|'5': case BACKSL|'5':
case BACKSL|'6': case BACKSL|'6':
▲ Show 20 Lines • Show All 1,191 Lines • Show Last 20 Lines