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