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/************************************************************************
* utils.c -- various utilities *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "utils.h"
#define LINEFRAGMENT 32
void *xmalloc(size_t size) /* safe malloc */
{
void *ptr;
ptr=malloc(size);
if (ptr == NULL) {
perror("xmalloc"); exit(1);
}
return ptr;
}
void *xrealloc(void *ptr, size_t size)
{
ptr=realloc(ptr, size);
if (ptr == NULL) {
perror("xrealloc"); exit(1);
}
return ptr;
}
char *gettextline(FILE *stream)
/* Read a line of text without imposing an length limit */
/* From: Bison Manual */
{
char *line;
#ifdef HAVE_GETLINE
line=NULL;
size_t len=0;
ssize_t nread;
nread=getline(&line, &len, stream);
if (nread > 0) {
line[len-1]='\0'; /* remove leading \n */
} else if (nread == -1) {
line=NULL;
}
#else
int c;
size_t i;
line=xmalloc(LINEFRAGMENT+1); i=0;
while (((c=fgetc(stream)) != EOF) && (c != '\n')) {
if ((i > 0) && (i % LINEFRAGMENT) == 0) {
line=xrealloc(line,i+LINEFRAGMENT+1);
}
line[i++]=(char)c;
}
line[i]='\0';
if (c == EOF) {
free(line); line=NULL;
}
#endif
return line;
}
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