wmweather+/getLine.c

   1 #include "config.h"
   2
   3 /*  Copyright (C) 2000  Brad Jorsch <anomie@users.sourceforge.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18 */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <ctype.h>
  24
  25 /* inspired by read_line from Eric S. Raymond's fetchmail program, by
  26  * way of Aaron Sethman's odsclient.  */
  27 int getLine(char **s, FILE *fd){
  28     int len=8196;
  29     int toread=len;
  30     int l=0;
  31     char *ptr, *p, *q;
  32
  33     *s=NULL;
  34     if(feof(fd)) return -1;
  35
  36     q=ptr=malloc(len);
  37     if(ptr==NULL) return -1;
  38     *q=0;
  39     p=q=ptr;
  40     while(fgets(p, toread, fd)!=NULL){
  41         l=strlen(ptr);
  42         q=strchr(p, '\n');
  43         if(q!=NULL){ l=q-ptr+1; break; }
  44         len*=2;
  45         toread=len-l;
  46         p=realloc(ptr, len);
  47         if(p==NULL){
  48             free(ptr);
  49             return -1;
  50         }
  51         ptr=p;
  52         q=p=ptr+l;
  53     }
  54     while(q>ptr && (*q=='\0' || isspace(*q))){
  55         *q='\0';
  56         l--;
  57         q--;
  58     }
  59     for(p=ptr; isspace(*p); p++, l--);
  60     if((*s=malloc(l+1))==NULL){
  61         free(ptr);
  62         return -1;
  63     }
  64     memcpy(*s, p, l+1);
  65     free(ptr);
  66     return l;
  67 }