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- /*
- * Copyright (c) 1992, 1993 Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the name of
- * Silicon Graphics may not be used in any advertising or publicity relating
- * to the software without the specific, prior written permission of
- * Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
- * ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION,
- * ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
- * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
- /*
- * version 1.6
- * Regexp is a class that encapsulates the Regular expression
- * stuff. Hopefully this means I can plug in different regexp
- * libraries without the rest of my code needing to be changed.
- * Written by Jim Morris, jegm@sgi.com
- */
- #ifndef _REGEXP_H
- #define _REGEXP_H
- #include <iostream.h>
- #include <stdlib.h>
- #include <malloc.h>
- #include <string.h>
- #include <assert.h>
- #include <ctype.h>
-
- #include "regex.h"
-
- /*
- * Note this is an inclusive range where it goes
- * from start() to, and including, end()
- */
- class Range
- {
- private:
- int st, en;
-
- public:
- Range()
- {
- st=0; en= -1;
- }
-
- Range(int s, int e)
- {
- st= s; en= e;
- }
-
- int start(void) const { return st;}
- int end(void) const { return en;}
- int length(void) const { return (en-st)+1;}
- };
-
- class Regexp
- {
- public:
- enum options {def=0, nocase=1};
-
- private:
- regexp *repat;
- const char *target; // only used as a base address to get an offset
- int res;
- int iflg;
- #ifndef __TURBOC__
- void strlwr(char *s)
- {
- while(*s){
- *s= tolower(*s);
- s++;
- }
- }
- #endif
- public:
- Regexp(const char *rege, int ifl= 0)
- {
- iflg= ifl;
- if(iflg == nocase){ // lowercase fold
- char *r= new char[strlen(rege)+1];
- strcpy(r, rege);
- strlwr(r);
- if((repat=regcomp(r)) == NULL){
- cerr << "regcomp() error" << endl;
- exit(1);
- }
- delete [] r;
- }else{
- if((repat=regcomp (rege)) == NULL){
- cerr << "regcomp() error" << endl;
- exit(1);
- }
- }
- }
-
- ~Regexp()
- {
- free(repat);
- }
-
- int match(const char *targ)
- {
- int res;
- if(iflg == nocase){ // fold lowercase
- char *r= new char[strlen(targ)+1];
- strcpy(r, targ);
- strlwr(r);
- res= regexec(repat, r);
- target= r; // looks bad but is really ok, really
- delete [] r;
- }else{
- res= regexec(repat, targ);
- target= targ;
- }
-
- return ((res == 0) ? 0 : 1);
- }
-
- int groups(void) const
- {
- int res= 0;
- for (int i=0; i<NSUBEXP; i++) {
- if(repat->startp[i] == NULL) break;
- res++;
- }
- return res;
- }
-
- Range getgroup(int n) const
- {
- assert(n < NSUBEXP);
- return Range((int)(repat->startp[n] - (char *)target),
- (int)(repat->endp[n] - (char *)target) - 1);
- }
- };
- #endif
-