dockapps/wmweather+/getLine.c

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1.7 KiB
C
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#include "config.h"
/* Copyright (C) 2000 Brad Jorsch <anomie@users.sourceforge.net>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
/* inspired by read_line from Eric S. Raymond's fetchmail program, by
* way of Aaron Sethman's odsclient. */
int getLine(char **s, FILE *fd){
int len=8196;
int toread=len;
int l=0;
char *ptr, *p, *q;
*s=NULL;
if(feof(fd)) return -1;
q=ptr=malloc(len);
if(ptr==NULL) return -1;
*q=0;
p=q=ptr;
while(fgets(p, toread, fd)!=NULL){
l=strlen(ptr);
q=strchr(p, '\n');
if(q!=NULL){ l=q-ptr+1; break; }
len*=2;
toread=len-l;
p=realloc(ptr, len);
if(p==NULL){
free(ptr);
return -1;
}
ptr=p;
q=p=ptr+l;
}
while(q>ptr && (*q=='\0' || isspace(*q))){
*q='\0';
l--;
q--;
}
for(p=ptr; isspace(*p); p++, l--);
if((*s=malloc(l+1))==NULL){
free(ptr);
return -1;
}
memcpy(*s, p, l+1);
free(ptr);
return l;
}