config.c

   1 #include "config.h"
   2 #include "util.h"
   3
   4 static void parse_option(config_ptr config, char *s1, char *s2)
   5 {
   6     if (!strcmp(s1, "showmoves")) {
   7         config->showmoves = atoi(s2);
   8     }
   9     if (!strcmp(s1, "fontsize")) {
  10         config->fontsize = atoi(s2);
  11     }
  12     if (!strcmp(s1, "font")) {
  13         config->fontname = clonestr(s2);
  14     }
  15     if (!strcmp(s1, "hiscores")) {
  16         config->hsfile = clonestr(s2);
  17     }
  18 }
  19
  20 static int is_whitespace(char c)
  21 {
  22     if (strchr(" \t\r\n", c)) return -1;
  23     return 0;
  24 }
  25
  26 static void skip_whitespace(FILE *fp)
  27 {
  28     for (;;) {
  29         int c;
  30         c = getc(fp);
  31         if (feof(fp)) return;
  32         if (!is_whitespace(c)) {
  33             ungetc(c, fp);
  34             break;
  35         }
  36     }
  37 }
  38
  39 /*
  40 static void read_word(char *s, FILE *fp)
  41 {
  42     int i = 0;
  43
  44     skip_whitespace(fp);
  45     if (feof(fp)) return;
  46
  47     for (;;) {
  48         int c;
  49         c = getc(fp);
  50         if (feof(fp)) return;
  51         if (is_whitespace(c)) {
  52             ungetc(c, fp);
  53             break;
  54         }
  55         s[i] = c;
  56         i++;
  57         if (i >= 128 - 1) break;
  58     }
  59     s[i] = 0;
  60 }
  61 */
  62
  63 static void read_line(char *s, FILE *fp)
  64 {
  65     int i = 0;
  66
  67     for (;;) {
  68         int c;
  69         c = getc(fp);
  70         if (feof(fp)) return;
  71         if (c == '\r') {
  72             //safest thing to do?
  73             continue;
  74         }
  75         if (c == '\n') {
  76             ungetc(c, fp);
  77             break;
  78         }
  79         s[i] = c;
  80         i++;
  81         if (i >= 1024 - 1) break;
  82     }
  83     s[i] = 0;
  84 }
  85
  86 void config_load(config_ptr config)
  87 {
  88     FILE *fp;
  89
  90     fp = config_get_fp();
  91
  92     for(;;) {
  93         int i;
  94         char s1[1024], *s2;
  95
  96         skip_whitespace(fp);
  97         if (feof(fp)) {
  98             break;
  99         }
 100         read_line(s1, fp);
 101         if (feof(fp)) {
 102             break;
 103         }
 104
 105         i = 0;
 106         for(;;) {
 107             if (!s1[i]) {
 108                 s2 = &s1[i];
 109                 break;
 110             }
 111             if (is_whitespace(s1[i])) {
 112                 s1[i] = 0;
 113                 i++;
 114                 for(;;) {
 115                     if (!s1[i] || !is_whitespace(s1[i])) {
 116                         s2 = &s1[i];
 117                         break;
 118                     }
 119                 }
 120                 break;
 121             }
 122             i++;
 123         }
 124
 125         parse_option(config, s1, s2);
 126     }
 127
 128     fclose(fp);
 129 }