+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <glob.h>
+#include <unistd.h>
+
+#define _IS_CONFIG_C
+#include "config.h"
+#undef _IS_CONFIG_C
+
+const char *wlan_interface;
+const char *eth_interface;
+const char *wmii_path;
+const char *time_format;
+const char *battery_path;
+bool use_colors;
+const char *wmii_normcolors;
+char order[MAX_ORDER][2];
+const char **run_watches;
+unsigned int num_run_watches;
+
+void die(const char *fmt, ...);
+
+/*
+ * This function exists primarily for resolving ~ in pathnames. However, you
+ * can also specify ~/Movies/ *, which will only return the first match!
+ *
+ */
+char *glob_path(const char *path) {
+ static glob_t globbuf;
+ if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
+ die("glob() failed");
+ char *result = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
+ globfree(&globbuf);
+ return result;
+}
+
+/*
+ * Loads configuration from configfile
+ *
+ */
+static void get_next_config_entry(FILE *handle, char **dest_name, char **dest_value, char *whole_buffer, int whole_buffer_size) {
+ char *ret;
+ if ((ret = fgets(whole_buffer, whole_buffer_size, handle)) == whole_buffer) {
+ char *c = whole_buffer;
+ /* Skip whitespaces in the beginning */
+ while (isspace((int)*c) && *c != '\0')
+ c++;
+ *dest_name = c;
+ while (!isspace((int)*c))
+ c++;
+ /* Terminate string as soon as whitespaces begin or it's terminated anyway */
+ *(c++) = '\0';
+
+ /* Same for the value: strip whitespaces */
+ while (isspace((int)*c) && *c != '\0')
+ c++;
+ *dest_value = c;
+ /* Whitespace is allowed, newline/carriage return is not */
+ while ((*c != '\n') && (*c != '\r') && (*c != '\0'))
+ c++;
+ *c = 0;
+ } else if (ret != NULL)
+ die("Could not read line in configuration file");
+}
+
+/*
+ * Reads the configuration from the given file
+ *
+ */
+int load_configuration(const char *configfile) {
+ #define OPT(x) else if (strcasecmp(dest_name, x) == 0)
+
+ /* Check if the file exists */
+ struct stat buf;
+ if (stat(configfile, &buf) < 0)
+ return -1;
+
+ int result = 0;
+ FILE *handle = fopen(configfile, "r");
+ if (handle == NULL)
+ die("Could not open configfile");
+ char *dest_name = NULL, *dest_value = NULL, whole_buffer[1026];
+ struct stat stbuf;
+ while (!feof(handle)) {
+ get_next_config_entry(handle, &dest_name, &dest_value, whole_buffer, 1024);
+ /* No more entries? We're done! */
+ if (dest_name == NULL)
+ break;
+ /* Skip comments and empty lines */
+ if (dest_name[0] == '#' || strlen(dest_name) < 3)
+ continue;
+
+ OPT("wlan")
+ {
+ wlan_interface = strdup(dest_value);
+ }
+ OPT("eth")
+ {
+ eth_interface = strdup(dest_value);
+ }
+ OPT("wmii_path")
+ {
+ char *globbed = glob_path(dest_value);
+ if ((stat(globbed, &stbuf)) == -1)
+ die("wmii_path contains an invalid path");
+ if (globbed[strlen(globbed)-1] != '/')
+ die("wmii_path is not terminated by /");
+ wmii_path = globbed;
+ }
+ OPT("time_format")
+ {
+ time_format = strdup(dest_value);
+ }
+ OPT("battery_path")
+ {
+ if ((stat(dest_value, &stbuf)) == -1)
+ die("battery_path contains an invalid path");
+ battery_path = strdup(dest_value);
+ }
+ OPT("run_watch")
+ {
+ char *name = strdup(dest_value);
+ char *path = name;
+ while (*path != ' ')
+ path++;
+ *(path++) = '\0';
+ num_run_watches += 2;
+ run_watches = realloc(run_watches, sizeof(char*) * num_run_watches);
+ run_watches[num_run_watches-2] = name;
+ run_watches[num_run_watches-1] = path;
+ }
+ OPT("order")
+ {
+ #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) sprintf(order[idx], "%d", c++); }
+ char *walk, *token;
+ int c = 0;
+ walk = token = dest_value;
+ while (*walk != '\0') {
+ while ((*walk != ',') && (*walk != '\0'))
+ walk++;
+ *(walk++) = '\0';
+ SET_ORDER("run", ORDER_RUN);
+ SET_ORDER("wlan", ORDER_WLAN);
+ SET_ORDER("eth", ORDER_ETH);
+ SET_ORDER("battery", ORDER_BATTERY);
+ SET_ORDER("load", ORDER_LOAD);
+ SET_ORDER("time", ORDER_TIME);
+ token = walk;
+ }
+ }
+ OPT("color")
+ {
+ use_colors = true;
+ }
+ OPT("normcolors")
+ {
+ wmii_normcolors = strdup(dest_value);
+ }
+ else
+ {
+ result = -2;
+ die("Unknown configfile option: %s\n", dest_name);
+ }
+ dest_name = dest_value = NULL;
+ }
+ fclose(handle);
+
+ if (wmii_path == NULL)
+ die("No wmii_path specified in configuration file");
+
+ return result;
+}
projects / i3 / i3status / commitdiff