wmclockmon/wmclockmon-cal/tools.c

   1 /*
   2  * Tools : memory management, file loading and saving
   3  */
   4
   5 #include "../config.h"
   6 #include "defines.h"
   7 #include "tools.h"
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <strings.h>
  12 #include <sys/types.h>
  13 #include <ctype.h>
  14 #include <pwd.h>
  15 #include <unistd.h>
  16 #include <sys/types.h>
  17
  18
  19 void *xmalloc(size_t size) {
  20     void *ret = malloc(size);
  21     if (ret == NULL) {
  22         perror("malloc() ");
  23         exit(-1);
  24     } else
  25         return ret;
  26 }
  27
  28
  29 char *xstrdup(const char *string) {
  30     char *ret = strdup(string);
  31     if (ret == NULL) {
  32         perror("strdup() ");
  33         exit(-1);
  34     } else
  35         return ret;
  36 }
  37
  38
  39 int getbool(const char *value) {
  40     if (strcmp(value, "0") == 0) return FALSE;
  41     if (strcmp(value, "1") == 0) return TRUE;
  42     if (strcasecmp(value, "true") == 0) return TRUE;
  43     if (strcasecmp(value, "false") == 0) return FALSE;
  44     if (strcasecmp(value, "yes") == 0) return TRUE;
  45     if (strcasecmp(value, "no") == 0) return FALSE;
  46     if (strcasecmp(value, "on") == 0) return TRUE;
  47     if (strcasecmp(value, "off") == 0) return FALSE;
  48     printf("Error in converting \"%s\" to boolean value.\n", value);
  49     return FALSE;
  50 }
  51
  52
  53 char *robust_home(void) {
  54     if (getenv("HOME"))
  55         return getenv("HOME");
  56     else if (getenv("USER") && getpwnam(getenv("USER")))
  57         return getpwnam(getenv("USER"))->pw_dir;
  58     else if (getenv("LOGNAME") && getpwnam(getenv("LOGNAME")))
  59         return getpwnam(getenv("LOGNAME"))->pw_dir;
  60     else if (getpwuid(getuid()))
  61         return getpwuid(getuid())->pw_dir;
  62     else
  63         return "/";
  64 }
  65
  66
  67 char *get_file(const char *datestr) {
  68     char *Home = robust_home();
  69     int   len  = strlen(Home) + strlen(DEFAULT_CONFIGDIR) + strlen(datestr);
  70     char *filename = xmalloc(len + 3);
  71
  72     sprintf(filename, "%s/%s/%s", Home, DEFAULT_CONFIGDIR, datestr);
  73     return filename;
  74 }
  75