newsrc.c

   1 /*
   2  * newsrc.c
   3  * Created: Sun Feb 25 22:07:34 2001 by tek@wiw.org
   4  * Revised: Sun Feb 25 22:07:34 2001 (pending)
   5  * Copyright 2001 Julian E. C. Squires (tek@wiw.org)
   6  * This program comes with ABSOLUTELY NO WARRANTY.
   7  * $Id: newsrc.c,v 1.3 2001/02/28 14:52:01 tek Exp $
   8  *
   9  */
  10
  11 #include <errno.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15
  16 #include "noose.h"
  17
  18 int newsrc_filter(char *rcfile, char *group, rangelist_t **rl);
  19 int newsrc_getsubscribedgroups(char *newsrc, int *ngroups, char ***groups);
  20
  21 int newsrc_filter(char *rcfile, char *group, rangelist_t **rl)
  22 {
  23     FILE *fp;
  24     char *buffer, *p;
  25     int buflen = 80, lineno, begin, end;
  26
  27     fp = fopen(rcfile, "r");
  28     if(fp == NULL) {
  29         fprintf(stderr, "%s: %s\n", PROGNAME, strerror(errno));
  30         return -1;
  31     }
  32
  33     buffer = malloc(buflen);
  34     if(buffer == NULL) {
  35         fprintf(stderr, "%s: Out of memory.\n", PROGNAME);
  36         return -1;
  37     }
  38
  39     lineno = 1;
  40     do {
  41         fgets(buffer, buflen, fp);
  42         while(buffer[strlen(buffer)-1] != '\n' && !feof(fp)) {
  43             buflen *= 2;
  44             buffer = realloc(buffer, buflen);
  45             if(buffer == NULL) {
  46                 fprintf(stderr, "%s: Out of memory.\n", PROGNAME);
  47                 return -1;
  48             }
  49             fgets(buffer+strlen(buffer)-1, buflen-strlen(buffer)-1, fp);
  50         }
  51         lineno++;
  52     } while(strncmp(buffer, group, strlen(group)) != 0 && !feof(fp));
  53
  54     if(!feof(fp)) {
  55         for(p = buffer; *p != ' ' && *p; p++);
  56         p++;
  57
  58         p = strtok(p, ",\n");
  59         do {
  60             begin = atoi(p);
  61             if(strchr(p, '-') != NULL) {
  62                 end = atoi(strchr(p, '-')+1);
  63             } else
  64                 end = begin;
  65             rl_exclude(rl, begin, end);
  66         } while(p = strtok(NULL, ",\n"), p != NULL);
  67     }
  68
  69     free(buffer);
  70     fclose(fp);
  71     return 0;
  72 }
  73
  74 int newsrc_getsubscribedgroups(char *rcfile, int *ngroups, char ***groups)
  75 {
  76     FILE *fp;
  77     char *buffer, *p;
  78     int buflen = 80, lineno;
  79
  80     fp = fopen(rcfile, "r");
  81     if(fp == NULL) {
  82         fprintf(stderr, "%s: %s\n", PROGNAME, strerror(errno));
  83         return -1;
  84     }
  85
  86     buffer = malloc(buflen);
  87     if(buffer == NULL) {
  88         fprintf(stderr, "%s: Out of memory.\n", PROGNAME);
  89         return -1;
  90     }
  91
  92     *groups = NULL;
  93     *ngroups = 0;
  94     lineno = 1;
  95     do {
  96         fgets(buffer, buflen, fp);
  97         while(buffer[strlen(buffer)-1] != '\n' && !feof(fp)) {
  98             buflen *= 2;
  99             buffer = realloc(buffer, buflen);
 100             if(buffer == NULL) {
 101                 fprintf(stderr, "%s: Out of memory at %s line %d.\n",
 102                         PROGNAME, rcfile, lineno);
 103                 return -1;
 104             }
 105             fgets(buffer+strlen(buffer)-1, buflen-strlen(buffer)-1, fp);
 106         }
 107
 108         if(buffer[strlen(buffer)-1] == '\n')
 109             buffer[strlen(buffer)-1] = 0;
 110
 111         for(p = buffer; *p != ' ' && *p; p++);
 112         if(*(p-1) == ':') { /* subscribed */
 113             (*ngroups)++;
 114             *groups = realloc(*groups, sizeof(char *)*(*ngroups));
 115             *(p-1) = 0;
 116             (*groups)[*ngroups-1] = strdup(buffer);
 117
 118         } else if(*(p-1) == '!') { /* not subscribed */
 119         } else { /* usually a blank line or similar */
 120         }
 121         lineno++;
 122     } while(!feof(fp));
 123
 124     return 0;
 125 }
 126
 127 /* EOF newsrc.c */