regsub.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* regsub
*
* Copyright (c) 1986 by University of Toronto.
* Written by Henry Spencer. Not derived from licensed software.
*
* Permission is granted to anyone to use this software for any
* purpose on any computer system, and to redistribute it freely,
* subject to the following restrictions:
*
* 1. The author is not responsible for the consequences of use of
* this software, no matter how awful, even if they arise
* from defects in it.
*
* 2. The origin of this software must not be misrepresented, either
* by explicit claim or by omission.
*
* 3. Altered versions must be plainly marked as such, and must not
* be misrepresented as being the original software.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <tptregexp.h>
#include "regmagic.h"
#ifndef CHARBITS
#define UCHARAT(p) ((int)*(unsigned char *)(p))
#else
#endif
/*
- regsub - perform substitutions after a regexp match
*/
void
char *source;
char *dest;
{
register char *src;
register char *dst;
register char c;
register int no;
register int len;
extern char *strncpy();
tpt_regerror("NULL parm to regsub");
return;
}
tpt_regerror("damaged regexp fed to regsub");
return;
}
while ((c = *src++) != '\0') {
if (c == '&')
no = 0;
else
no = -1;
if (no < 0) { /* Ordinary character. */
c = *src++;
*dst++ = c;
tpt_regerror("damaged match string");
return;
}
}
}
*dst++ = '\0';
}