git.sur5r.net Git - i3/i3status/blob - src/config.c

   1 // vim:ts=8:expandtab
   2 #include <sys/stat.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include <ctype.h>
   7
   8 #include "i3status.h"
   9
  10 int highest_order = 0;
  11
  12 /*
  13  * Reads the configuration from the given file
  14  *
  15  */
  16 int load_configuration(const char *configfile) {
  17         #define OPT(x) else if (strcasecmp(dest_name, x) == 0)
  18
  19         /* check if the file exists */
  20         struct stat buf;
  21         if (stat(configfile, &buf) < 0)
  22                 return -1;
  23
  24         int result = 0;
  25         FILE *handle = fopen(configfile, "r");
  26         if (handle == NULL)
  27                 die("Could not open configfile\n");
  28         char dest_name[512], dest_value[512], whole_buffer[1026];
  29
  30         while (!feof(handle)) {
  31                 char *ret;
  32                 if ((ret = fgets(whole_buffer, 1024, handle)) == whole_buffer) {
  33                         /* sscanf implicitly strips whitespace */
  34                         if (sscanf(whole_buffer, "%s %[^\n]", dest_name, dest_value) < 1)
  35                                 continue;
  36                 } else if (ret != NULL)
  37                         die("Could not read line in configuration file\n");
  38
  39                 /* skip comments and empty lines */
  40                 if (dest_name[0] == '#' || strlen(dest_name) < 3)
  41                         continue;
  42
  43                 OPT("wlan")
  44                         wlan_interface = strdup(dest_value);
  45                 OPT("eth")
  46                         eth_interface = strdup(dest_value);
  47                 OPT("time_format")
  48                         time_format = strdup(dest_value);
  49                 OPT("battery") {
  50                         struct battery *new = calloc(1, sizeof(struct battery));
  51                         if (new == NULL)
  52                                 die("Could not allocate memory\n");
  53                         if (asprintf(&(new->path), "/sys/class/power_supply/BAT%d/uevent", atoi(dest_value)) == -1)
  54                                 die("Could not build battery path\n");
  55
  56                         /* check if flags were specified for this battery */
  57                         if (strstr(dest_value, ",") != NULL) {
  58                                 char *flags = strstr(dest_value, ",");
  59                                 flags++;
  60                                 if (*flags == 'f')
  61                                         new->use_last_full = true;
  62                         }
  63                         SIMPLEQ_INSERT_TAIL(&batteries, new, batteries);
  64                 } OPT("color")
  65                         use_colors = true;
  66                 OPT("get_ipv6")
  67                         get_ipv6 = true;
  68                 OPT("get_ethspeed")
  69                         get_ethspeed = true;
  70                 OPT("get_cpu_temperature") {
  71                         get_cpu_temperature = true;
  72                         if (strlen(dest_value) > 0) {
  73                                 if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone%d/temp", atoi(dest_value)) == -1)
  74                                         die("Could not build thermal_zone path\n");
  75                         } else {
  76                                  if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone0/temp") == -1)
  77                                         die("Could not build thermal_zone path\n");
  78                         }
  79                 } OPT("normcolors")
  80                         wmii_normcolors = strdup(dest_value);
  81                 OPT("interval")
  82                         interval = atoi(dest_value);
  83                 OPT("wmii_path")
  84                 {
  85 #ifndef DZEN
  86                         static glob_t globbuf;
  87                         struct stat stbuf;
  88                         if (glob(dest_value, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
  89                                 die("glob() failed\n");
  90                         wmii_path = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : dest_value);
  91                         globfree(&globbuf);
  92
  93                         if ((stat(wmii_path, &stbuf)) == -1) {
  94                                 fprintf(stderr, "Warning: wmii_path contains an invalid path\n");
  95                                 free(wmii_path);
  96                                 wmii_path = strdup(dest_value);
  97                         }
  98                         if (wmii_path[strlen(wmii_path)-1] != '/')
  99                                 die("wmii_path is not terminated by /\n");
 100 #endif
 101                 }
 102                 OPT("run_watch")
 103                 {
 104                         char *name = strdup(dest_value);
 105                         char *path = name;
 106                         while (*path != ' ')
 107                                 path++;
 108                         *(path++) = '\0';
 109                         num_run_watches += 2;
 110                         run_watches = realloc(run_watches, sizeof(char*) * num_run_watches);
 111                         run_watches[num_run_watches-2] = name;
 112                         run_watches[num_run_watches-1] = path;
 113                 }
 114                 OPT("order")
 115                 {
 116                         #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) order[idx] = highest_order++; }
 117                         char *walk, *token;
 118                         walk = token = dest_value;
 119                         while (*walk != '\0') {
 120                                 while ((*walk != ',') && (*walk != '\0'))
 121                                         walk++;
 122                                 *(walk++) = '\0';
 123                                 SET_ORDER("run", ORDER_RUN);
 124                                 SET_ORDER("ipv6", ORDER_IPV6);
 125                                 SET_ORDER("wlan", ORDER_WLAN);
 126                                 SET_ORDER("eth", ORDER_ETH);
 127                                 SET_ORDER("battery", ORDER_BATTERY);
 128                                 SET_ORDER("cpu_temperature", ORDER_CPU_TEMPERATURE);
 129                                 SET_ORDER("load", ORDER_LOAD);
 130                                 SET_ORDER("time", ORDER_TIME);
 131                                 token = walk;
 132                                 while (isspace((int)(*token)))
 133                                         token++;
 134                         }
 135                 }
 136                 else
 137                 {
 138                         result = -2;
 139                         die("Unknown configfile option: %s\n", dest_name);
 140                 }
 141         }
 142         fclose(handle);
 143
 144 #ifndef DZEN
 145         if (wmii_path == NULL)
 146                 exit(EXIT_FAILURE);
 147 #endif
 148
 149         return result;
 150 }