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/* $FreeBSD$ */
/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id: getline.c,v 1.3 2001/06/09 17:09:24 darrenr Exp $
*/
#include <stdio.h>
#if !defined(__SVR4) && !defined(__GNUC__)
#include <strings.h>
#endif
#include <string.h>
#include "ipf.h"
/*
* Similar to fgets(3) but can handle '\\' and NL is converted to NUL.
* Returns NULL if error occured, EOF encounterd or input line is too long.
*/
char *getline(str, size, file, linenum)
register char *str;
size_t size;
FILE *file;
int *linenum;
{
char *p;
int s, len;
do {
for (p = str, s = size;; p += (len - 1), s -= (len - 1)) {
/*
* if an error occured, EOF was encounterd, or there
* was no room to put NUL, return NULL.
*/
if (fgets(p, s, file) == NULL)
return (NULL);
len = strlen(p);
if (p[len - 1] != '\n') {
p[len] = '\0';
break;
}
(*linenum)++;
p[len - 1] = '\0';
if (len < 2 || p[len - 2] != '\\')
break;
else
/*
* Convert '\\' to a space so words don't
* run together
*/
p[len - 2] = ' ';
}
} while (*str == '\0');
return (str);
}
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