#include <stdio.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
 
typedef struct
{
   unsigned int version; 
   const char  *name;
   int          id;
   int          not_saved_value; 
} My_Conf_Type;
 
typedef struct
{
   const char *server;
   int         port;
} My_Conf_Subtype;
 
static const char MY_CONF_FILE_ENTRY[] = "config";
 
 
static void
_my_conf_descriptor_init(void)
{
 
   
   
   
   
   
   
   
   
   
   
   
   
 
 
   
   
#define MY_CONF_ADD_BASIC(member, eet_type) \
  EET_DATA_DESCRIPTOR_ADD_BASIC             \
    (_my_conf_descriptor, My_Conf_Type, # member, member, eet_type)
#define MY_CONF_SUB_ADD_BASIC(member, eet_type) \
  EET_DATA_DESCRIPTOR_ADD_BASIC                 \
    (_my_conf_sub_descriptor, My_Conf_Subtype, # member, member, eet_type)
 
 
 
   
     (_my_conf_descriptor, My_Conf_Type, "subs", subs, _my_conf_sub_descriptor);
 
#undef MY_CONF_ADD_BASIC
#undef MY_CONF_SUB_ADD_BASIC
} 
 
static void
_my_conf_descriptor_shutdown(void)
{
} 
 
static My_Conf_Type *
_my_conf_new(void)
{
   My_Conf_Type *my_conf = calloc(1, sizeof(My_Conf_Type));
   My_Conf_Subtype *sub;
   if (!my_conf)
     {
        fprintf(stderr, "ERROR: could not calloc My_Conf_Type\n");
        return NULL;
     }
 
   my_conf->version = 0x112233;
 
   sub = calloc(1, sizeof(My_Conf_Subtype));
   if (sub)
     {
        sub->port = 1234;
     }
 
   return my_conf;
} 
 
static void
_my_conf_free(My_Conf_Type *my_conf)
{
   My_Conf_Subtype *sub;
     {
        free(sub);
     }
 
   free(my_conf);
} 
 
static My_Conf_Type *
_my_conf_load(const char *filename)
{
   My_Conf_Type *my_conf;
   if (!ef)
     {
        fprintf(stderr, "ERROR: could not open '%s' for read\n", filename);
        return NULL;
     }
 
   my_conf = 
eet_data_read(ef, _my_conf_descriptor, MY_CONF_FILE_ENTRY);
   if (!my_conf)
     goto end;
 
   if (my_conf->version < 0x112233)
     {
        fprintf(stderr,
                "WARNING: version %#x was too old, upgrading it to %#x\n",
                my_conf->version, 0x112233);
 
        my_conf->version = 0x112233;
     }
 
end:
   return my_conf;
} 
 
_my_conf_save(const My_Conf_Type *my_conf,
              const char         *filename)
{
   char tmp[PATH_MAX];
   unsigned int i, len;
   struct stat st;
 
   if (len + 12 >= (int)sizeof(tmp))
     {
        fprintf(stderr, "ERROR: file name is too big: %s\n", filename);
     }
 
   i = 0;
   do
     {
        snprintf(tmp + len, 12, ".%u", i);
        i++;
     }
   while (stat(tmp, &st) == 0);
 
   if (!ef)
     {
        fprintf(stderr, "ERROR: could not open '%s' for write\n", tmp);
     }
 
       (ef, _my_conf_descriptor, MY_CONF_FILE_ENTRY, my_conf, 
EINA_TRUE);
 
   if (ret)
     {
        unlink(filename);
        rename(tmp, filename);
     }
 
   return ret;
} 
 
int
main(int   argc,
     char *argv[])
{
   My_Conf_Type *my_conf;
   const My_Conf_Subtype *sub;
   int ret = 0;
 
   if (argc != 3)
     {
        fprintf(stderr, "Usage:\n\t%s <input> <output>\n\n", argv[0]);
        return -1;
     }
 
   _my_conf_descriptor_init();
 
   my_conf = _my_conf_load(argv[1]);
   if (!my_conf)
     {
        printf("creating new configuration.\n");
        my_conf = _my_conf_new();
        if (!my_conf)
          {
             ret = -2;
             goto end;
          }
     }
 
   printf("My_Conf_Type:\n"
          "\tversion: %#x\n"
          "\tname...: '%s'\n"
          "\tid.....: %d\n"
          "\tenabled: %hhu\n"
          "\tsubs...:\n",
          my_conf->version,
          my_conf->name ? my_conf->name : "",
          my_conf->id,
          my_conf->enabled);
 
     printf("\t\tserver: '%s', port: %d\n",
            sub->server ? sub->server : "",
            sub->port);
 
   if (!_my_conf_save(my_conf, argv[2]))
     ret = -3;
 
   _my_conf_free(my_conf);
 
end:
   _my_conf_descriptor_shutdown();
 
   return ret;
} 
 
The file that provides the eet functions.
#define EET_T_UCHAR
Data type: unsigned char.
Definition: Eet.h:2585
#define EET_T_STRING
Data type: char *.
Definition: Eet.h:2589
EAPI void eet_data_descriptor_free(Eet_Data_Descriptor *edd)
This function frees a data descriptor when it is not needed anymore.
Definition: eet_data.c:2102
struct _Eet_Data_Descriptor Eet_Data_Descriptor
Opaque handle that have information on a type members.
Definition: Eet.h:2631
EAPI void * eet_data_read(Eet_File *ef, Eet_Data_Descriptor *edd, const char *name)
Reads a data structure from an eet file and decodes it.
Definition: eet_data.c:2377
#define EET_T_INT
Data type: int.
Definition: Eet.h:2581
#define EET_EINA_STREAM_DATA_DESCRIPTOR_CLASS_SET(clas, type)
This macro is an helper that set all the parameter of an Eet_Data_Descriptor_Class correctly when you...
Definition: Eet.h:3034
#define EET_DATA_DESCRIPTOR_ADD_LIST(edd, struct_type, name, member, subtype)
Adds a linked list type to a data descriptor.
Definition: Eet.h:3511
EAPI int eet_data_write(Eet_File *ef, Eet_Data_Descriptor *edd, const char *name, const void *data, int compress)
Writes a data structure from memory and store in an eet file.
Definition: eet_data.c:2414
#define EET_T_UINT
Data type: unsigned int.
Definition: Eet.h:2587
EAPI Eet_Data_Descriptor * eet_data_descriptor_stream_new(const Eet_Data_Descriptor_Class *eddc)
This function creates a new data descriptor and returns a handle to the new data descriptor.
Definition: eet_data.c:2082
EAPI Eet_Error eet_close(Eet_File *ef)
Closes an eet file handle and flush pending writes.
Definition: eet_lib.c:1899
EAPI Eet_File * eet_open(const char *file, Eet_File_Mode mode)
Opens an eet file on disk, and returns a handle to it.
Definition: eet_lib.c:1499
struct _Eet_File Eet_File
Opaque handle that defines an Eet file (or memory).
Definition: Eet.h:527
@ EET_FILE_MODE_READ
File is read-only.
Definition: Eet.h:479
@ EET_FILE_MODE_WRITE
File is write-only.
Definition: Eet.h:480
EAPI int eet_init(void)
Initializes the EET library.
Definition: eet_lib.c:540
EAPI int eet_shutdown(void)
Shuts down the EET library.
Definition: eet_lib.c:594
Eina_List * eina_list_append(Eina_List *list, const void *data)
Appends the given data to the given linked list.
Definition: eina_list.c:584
#define EINA_LIST_FOREACH(list, l, _data)
Definition for the macro to iterate over a list.
Definition: eina_list.h:1415
#define EINA_LIST_FREE(list, data)
Definition for the macro to remove each list node while having access to each node's data.
Definition: eina_list.h:1629
int eina_shutdown(void)
Shuts down the Eina library.
Definition: eina_main.c:350
int eina_init(void)
Initializes the Eina library.
Definition: eina_main.c:279
size_t eina_strlcpy(char *dst, const char *src, size_t siz)
Copies a c-string to another.
Definition: eina_str.c:317
void eina_stringshare_del(Eina_Stringshare *str)
Notes that the given string has lost an instance.
Definition: eina_stringshare.c:533
Eina_Stringshare * eina_stringshare_add(const char *str)
Retrieves an instance of a string for use in a program.
Definition: eina_stringshare.c:606
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition: eina_types.h:533
unsigned char Eina_Bool
Type to mimic a boolean.
Definition: eina_types.h:527
Instructs Eet about memory management for different needs under serialization and parse process.
Definition: Eet.h:2828
Type for a generic double linked list.
Definition: eina_list.h:318