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 int fexist(const char *filename) {
  20     FILE *file;
  21
  22     if ( (file = fopen(filename, "r") ) == NULL) return FALSE;
  23     fclose(file);
  24
  25     return TRUE;
  26 }
  27
  28
  29 void *xmalloc(size_t size) {
  30     void *ret = malloc(size);
  31     if (ret == NULL) {
  32         perror("malloc() ");
  33         exit(-1);
  34     } else
  35         return ret;
  36 }
  37
  38
  39 char *xstrdup(const char *string) {
  40     char *ret = strdup(string);
  41     if (ret == NULL) {
  42         perror("strdup() ");
  43         exit(-1);
  44     } else
  45         return ret;
  46 }
  47
  48
  49 int getbool(char *value) {
  50     int i;
  51     for (i = 0 ; value[i] ; i++) value[i] = tolower(value[i]);
  52     if (strcmp(value, "0") == 0) return FALSE;
  53     if (strcmp(value, "1") == 0) return TRUE;
  54     if (strcmp(value, "true") == 0) return TRUE;
  55     if (strcmp(value, "false") == 0) return FALSE;
  56     if (strcmp(value, "yes") == 0) return TRUE;
  57     if (strcmp(value, "no") == 0) return FALSE;
  58     if (strcmp(value, "on") == 0) return TRUE;
  59     if (strcmp(value, "off") == 0) return FALSE;
  60     printf("Error in converting \"%s\" to boolean value.\n", value);
  61     return FALSE;
  62 }
  63
  64
  65 char *robust_home() {
  66     if (getenv("HOME"))
  67         return getenv("HOME");
  68     else if (getenv("USER") && getpwnam(getenv("USER")))
  69         return getpwnam (getenv ("USER") )->pw_dir;
  70     else if (getenv ("LOGNAME") && getpwnam(getenv("LOGNAME")))
  71         return getpwnam(getenv("LOGNAME"))->pw_dir;
  72     else if ((getuid() != -1) && (getpwuid(getuid())))
  73         return getpwuid(getuid())->pw_dir;
  74     else
  75         return "/";
  76 }
  77
  78
  79 char *get_file(const char *datestr) {
  80     char *Home = robust_home();
  81     int   len  = strlen(Home) + strlen(DEFAULT_CONFIGDIR) + strlen(datestr);
  82     char *filename = xmalloc(len + 3);
  83
  84     sprintf(filename, "%s/%s/%s", Home, DEFAULT_CONFIGDIR, datestr);
  85     return filename;
  86 }
  87