src/filedata.c

   1 // --------------------------------------------------------
   2 // filedata.c
   3 // --------------------------------------------------------
   4 // Copyright (c) Kronoman
   5 // En memoria de mi querido padre
   6 // --------------------------------------------------------
   7 // This file is used as a wrapper for load_datafile and other similar
   8 // I use this for reach the datafile searching in common paths
   9 // Is specially useful for datafiles in Windows, because most
  10 // of the time Windows don't start the program in the executable path,
  11 // and the program is unable to find the datafile.
  12 // --------------------------------------------------------
  13
  14 #include <allegro.h>
  15 #include <stdio.h>
  16 #include "filedata.h"
  17 // --------------------------------------------------------
  18 // This checks for the filename in several places.
  19 // Returns where the filename is located in buffer
  20 // buffer should be a 2048 bytes char
  21 // If the file is not found, return the filename...
  22 // --------------------------------------------------------
  23 char *where_is_the_filename(char *buffer, const char *filename)
  24 {
  25 char str[2048], str2[2048]; // buffer for path making
  26
  27 // check in current executable path
  28 get_executable_name(str, 2048);
  29 replace_filename(str2, str, filename, 2048);
  30
  31 if (! exists(filename) )
  32  {
  33         if (exists(str2))
  34         {
  35                 sprintf(buffer,"%s", str2);
  36                 return buffer;
  37         }
  38         else
  39         {
  40                 get_executable_name(str, 2048);
  41                 replace_filename(str, str, "", 2048);
  42                 if (! find_allegro_resource(str2, filename, get_extension(filename), NULL, NULL, NULL, str, 2048) )
  43                 {
  44                         sprintf(buffer,"%s", str2);
  45                         return buffer;
  46                 }
  47         }
  48  }
  49
  50 // default
  51 sprintf(buffer,"%s", filename);
  52 return buffer;
  53 }
  54
  55 // --------------------------------------------------------
  56 // This functions is a wrapper of load_datafile
  57 // Just pass a file name (without path), and this will try to seach and load it
  58 // Will return a pointer to the DATAFILE or NULL if error.
  59 // --------------------------------------------------------
  60 DATAFILE *krono_load_datafile(const char *filename)
  61 {
  62 char str[2048];
  63
  64 return load_datafile(where_is_the_filename(str, filename)); // return what we found...
  65 }
  66
  67
  68 DATAFILE *krono_load_datafile_callback(const char *filename, void (*callback)(DATAFILE *d))
  69 {
  70 char str[2048];
  71
  72 return load_datafile_callback(where_is_the_filename(str, filename), callback); // return what we found...
  73 }
  74
  75 DATAFILE *krono_load_datafile_object(const char *filename, const char *objectname)
  76 {
  77 char str[2048];
  78
  79 return load_datafile_object(where_is_the_filename(str, filename), objectname); // return what we found...
  80 }