/**
 * @page eet_examples EET Examples
 *
 * Here is a page with examples.
 *
 * @ref Example_Eet_Data_Simple
 *
 * @ref Example_Eet_Data_Nested
 *
 * @ref Example_Eet_Data_File_Descriptor_01
 *
 * @ref Example_Eet_Data_File_Descriptor_02
 *
 * @ref Example_Eet_Data_Cipher_Decipher
 */

/**
 * @page Example_Eet_Basic Very basic Eet example
 *
 * @includelineno eet-basic.c
 * @example eet-basic.c
 */

/**
 * @page Example_Eet_File Example of the various ways to interface with an Eet File
 *
 * @includelineno eet-file.c
 * @example eet-file.c
 */

/**
 * @page Example_Eet_Data_Simple Simple data example
 *
 * @includelineno eet-data-simple.c
 * @example eet-data-simple.c
 */

/**
 * @page Example_Eet_Data_Nested Nested data example
 *
 * @includelineno eet-data-nested.c
 * @example eet-data-nested.c
 */

/**
 * @page Example_Eet_Data_File_Descriptor_01 File descriptor data example
 *
 * @includelineno eet-data-file_descriptor_01.c
 * @example eet-data-file_descriptor_01.c
 */

/**
 * @page Example_Eet_Data_File_Descriptor_02 File descriptor data example, with Eet unions and variants
 *
 * This is an example much like the one shown in @ref
 * eet_data_file_descriptor. The difference is that here we're
 * attaining ourselves to two new data types to store in an Eet file
 * -- @b unions and @b variants. We don't try to come with data
 * mapping to real world use cases, here. Instead, we're defining
 * 3 different simple structures to be used throughout the example:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip typedef struct _Example_Struct1
 * @until typedef struct _Example_Struct3
 * @skip struct _Example_Struct1
 * @until int body
 * @until };
 *
 * To identify, for both union and variant data cases, the type of
 * each chunk of data, we're defining types to point to each of those
 * structs:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip typedef enum _Example_Data_Type
 * @until ;
 * @skip enum _Example_Data_Type
 * @until };
 *
 * We have also a mapping from those types to name strings, to be used
 * in the Eet unions and variants @c type_get() and @c type_set() type
 * identifying callbacks:
 * @skip struct
 * @until };
 *
 * In this example, we have no fancy hash to store our data into
 * profiles/accounts, but just two lists for union and variant data
 * nodes:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip typedef struct _Example_Lists
 * @until typedef struct _Example_Lists
 * @skip struct _Example_Lists
 * @until };
 *
 * Let's begin with our unions, then, which look like:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip typedef struct _Example_Union
 * @until typedef struct _Example_Union
 * @skip struct _Example_Union
 * @until };
 *
 * The first interesting part of the code is where we define our data
 * descriptors for the main lists, the unions and all of structures
 * upon which those two depend.
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip declaring types
 * @until _union_descriptor);
 * The code for descriptors on @c Example_Struct1, @c Example_Struct2
 * and @c Example_Struct3 is straightforward, a matter already covered
 * on @ref eet_data_file_descriptor. What is new, here, are the two
 * type matching functions for our unions. There, we must set the @c
 * data pointer to its matching type, on @c _union_type_set and return
 * the correct matching type, on @c _union_type_get:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip union type_get()
 * @until _union_type_set
 * @until _union_type_set
 *
 * With the #EET_DATA_DESCRIPTOR_ADD_MAPPING calls, which follow, we
 * make the the link between our type names and their respective
 * structs. The code handling actual data is pretty much the same as in
 * @ref eet_data_file_descriptor -- one uses command line arguments to
 * enter new data chunks (or just to visualize the contents of an Eet
 * file), signalling if they are unions or variants. One must also
 * pass the type of the data chuck to enter, with integers 1, 2 or
 * 3. Then, come the fields for each type:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip Usage
 * @until argv
 *
 * Variants are very similar to unions, except that data chunks need
 * @b not contain previously allocated space for each of the possible
 * types of data going in them:
 * @dontinclude eet-data-file_descriptor_02.c
 * @skip typedef struct _Example_Variant
 * @until typedef struct _Example_Variant
 * @skip struct _Example_Variant_Type
 * @until };
 * @until };
 *
 * The code declaring the data descriptors and handling the data is
 * very similar to the unions part, and is left for the reader to
 * check for him/herself. The complete code of the example follows.
 *
 * @includelineno eet-data-file_descriptor_02.c
 * @example eet-data-file_descriptor_02.c
 */

/**
 * @page Example_Eet_Data_Cipher_Decipher Eet data cipher/decipher example
 *
 * In this example, we exemplify the usage of eet_write_cipher() and
 * eet_read_cipher(). For it to work, <b>make sure</b> to have your
 * Eet installation with a ciphering backend enabled.
 *
 * We start by defining the information to record in an Eet file (@c
 * buffer), the key to cipher that (@c key) and a dummy wrong key to
 * try to access that information, later (@c key_bad).
 * @dontinclude eet-data-cipher_decipher.c
 * @skip buffer =
 * @until bad =
 *
 * After opening our file, we simply use the first cited function to
 * write our string ciphered:
 * @dontinclude eet-data-cipher_decipher.c
 * @skip eet_open
 * @until eet_close
 *
 * Then, after closing it on purpose, we open it again, to retrieve
 * the encrypted information back, in a readable format:
 * @skip eet_open
 * @until eet_close
 * @until eet_close
 *
 * Note that we do it twice, being the last time with the wrong
 * key. In this last case, if the information is read back and matches
 * the original @c buffer, something wrong is going on (we made it to
 * fail on purpose). The former access is OK, and must work.
 *
 * What we do in sequence is just to delete the file. The complete
 * code of the example follows.
 *
 * @includelineno eet-data-cipher_decipher.c
 * @example eet-data-cipher_decipher.c
 */