/**
 * @file plist/plist.h
 * @brief Main include of libplist
 * \internal
 *
 * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef LIBPLIST_H
#define LIBPLIST_H

#ifdef __cplusplus
extern "C"
{
#endif

#ifdef _MSC_VER
    typedef __int8 int8_t;
    typedef __int16 int16_t;
    typedef __int32 int32_t;
    typedef __int64 int64_t;

    typedef unsigned __int8 uint8_t;
    typedef unsigned __int16 uint16_t;
    typedef unsigned __int32 uint32_t;
    typedef unsigned __int64 uint64_t;

#ifdef plist_EXPORTS
#define PLIST_API  __declspec( dllexport )
#else
#define PLIST_API  __declspec( dllimport )
#endif
#else
#include <stdint.h>
#define PLIST_API
#endif

#include <sys/types.h>
#include <stdarg.h>

    /**
     * \mainpage libplist : A library to handle Apple Property Lists
     * \defgroup PublicAPI Public libplist API
     */
    /*@{*/


    /**
     * The basic plist abstract data type.
     */
    typedef void *plist_t;

    /**
     * The plist dictionary iterator.
     */
    typedef void *plist_dict_iter;

    /**
     * The enumeration of plist node types.
     */
    typedef enum
    {
        PLIST_BOOLEAN,	/**< Boolean, scalar type */
        PLIST_UINT,	/**< Unsigned integer, scalar type */
        PLIST_REAL,	/**< Real, scalar type */
        PLIST_STRING,	/**< ASCII string, scalar type */
        PLIST_ARRAY,	/**< Ordered array, structured type */
        PLIST_DICT,	/**< Unordered dictionary (key/value pair), structured type */
        PLIST_DATE,	/**< Date, scalar type */
        PLIST_DATA,	/**< Binary data, scalar type */
        PLIST_KEY,	/**< Key in dictionaries (ASCII String), scalar type */
        PLIST_NONE	/**< No type */
    } plist_type;


    /********************************************
     *                                          *
     *          Creation & Destruction          *
     *                                          *
     ********************************************/

    /**
     * Create a new root plist_t type #PLIST_DICT
     *
     * @return the created plist
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_dict(void);

    /**
     * Create a new root plist_t type #PLIST_ARRAY
     *
     * @return the created plist
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_array(void);

    /**
     * Create a new plist_t type #PLIST_STRING
     *
     * @param val the sting value, encoded in UTF8.
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_string(const char *val);

    /**
     * Create a new plist_t type #PLIST_BOOLEAN
     *
     * @param val the boolean value, 0 is false, other values are true.
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_bool(uint8_t val);

    /**
     * Create a new plist_t type #PLIST_UINT
     *
     * @param val the unsigned integer value
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_uint(uint64_t val);

    /**
     * Create a new plist_t type #PLIST_REAL
     *
     * @param val the real value
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_real(double val);

    /**
     * Create a new plist_t type #PLIST_DATA
     *
     * @param val the binary buffer
     * @param length the length of the buffer
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_data(const char *val, uint64_t length);

    /**
     * Create a new plist_t type #PLIST_DATE
     *
     * @param sec the number of seconds since 01/01/2001
     * @param usec the number of microseconds
     * @return the created item
     * @sa #plist_type
     */
    PLIST_API plist_t plist_new_date(int32_t sec, int32_t usec);

    /**
     * Destruct a plist_t node and all its children recursively
     *
     * @param plist the plist to free
     */
    PLIST_API void plist_free(plist_t plist);

    /**
     * Return a copy of passed node and it's children
     *
     * @param node the plist to copy
     * @return copied plist
     */
    PLIST_API plist_t plist_copy(plist_t node);


    /********************************************
     *                                          *
     *            Array functions               *
     *                                          *
     ********************************************/

    /**
     * Get size of a #PLIST_ARRAY node.
     *
     * @param node the node of type #PLIST_ARRAY
     * @return size of the #PLIST_ARRAY node
     */
    PLIST_API uint32_t plist_array_get_size(plist_t node);

    /**
     * Get the nth item in a #PLIST_ARRAY node.
     *
     * @param node the node of type #PLIST_ARRAY
     * @param n the index of the item to get. Range is [0, array_size[
     * @return the nth item or NULL if node is not of type #PLIST_ARRAY
     */
    PLIST_API plist_t plist_array_get_item(plist_t node, uint32_t n);

    /**
     * Get the index of an item. item must be a member of a #PLIST_ARRAY node.
     *
     * @param node the node
     * @return the node index
     */
    PLIST_API uint32_t plist_array_get_item_index(plist_t node);

    /**
     * Set the nth item in a #PLIST_ARRAY node.
     * The previous item at index n will be freed using #plist_free
     *
     * @param node the node of type #PLIST_ARRAY
     * @param item the new item at index n
     * @param n the index of the item to get. Range is [0, array_size[. Assert if n is not in range.
     */
    PLIST_API void plist_array_set_item(plist_t node, plist_t item, uint32_t n);

    /**
     * Append a new item at the end of a #PLIST_ARRAY node.
     *
     * @param node the node of type #PLIST_ARRAY
     * @param item the new item
     */
    PLIST_API void plist_array_append_item(plist_t node, plist_t item);

    /**
     * Insert a new item at position n in a #PLIST_ARRAY node.
     *
     * @param node the node of type #PLIST_ARRAY
     * @param item the new item to insert
     * @param n The position at which the node will be stored. Range is [0, array_size[. Assert if n is not in range.
     */
    PLIST_API void plist_array_insert_item(plist_t node, plist_t item, uint32_t n);

    /**
     * Remove an existing position in a #PLIST_ARRAY node.
     * Removed position will be freed using #plist_free
     *
     * @param node the node of type #PLIST_ARRAY
     * @param n The position to remove. Range is [0, array_size[. Assert if n is not in range.
     */
    PLIST_API void plist_array_remove_item(plist_t node, uint32_t n);

    /********************************************
     *                                          *
     *         Dictionary functions             *
     *                                          *
     ********************************************/

    /**
     * Get size of a #PLIST_DICT node.
     *
     * @param node the node of type #PLIST_DICT
     * @return size of the #PLIST_DICT node
     */
    PLIST_API uint32_t plist_dict_get_size(plist_t node);

    /**
     * Create iterator of a #PLIST_DICT node.
     * The allocated iterator shoult be freed with tandard free function
     *
     * @param node the node of type #PLIST_DICT
     * @param iter iterator of the #PLIST_DICT node
     */
    PLIST_API void plist_dict_new_iter(plist_t node, plist_dict_iter *iter);

    /**
     * Increment iterator of a #PLIST_DICT node.
     *
     * @param node the node of type #PLIST_DICT
     * @param iter iterator of the dictionary
     * @param key a location to store the key, or NULL.
     * @param val a location to store the value, or NULL.
     */
    PLIST_API void plist_dict_next_item(plist_t node, plist_dict_iter iter, char **key, plist_t *val);

    /**
     * Get key associated to an item. Item must be member of a dictionary
     *
     * @param node the node
     * @param key a location to store the key.
     */
    PLIST_API void plist_dict_get_item_key(plist_t node, char **key);

    /**
     * Get the nth item in a #PLIST_DICT node.
     *
     * @param node the node of type #PLIST_DICT
     * @param key the identifier of the item to get.
     * @return the item or NULL if node is not of type #PLIST_DICT
     */
    PLIST_API plist_t plist_dict_get_item(plist_t node, const char* key);

    /**
     * Set item identified by key in a #PLIST_DICT node.
     * The previous item at index n will be freed using #plist_free
     *
     * @param node the node of type #PLIST_DICT
     * @param item the new item associated to key
     * @param key the identifier of the item to get. Assert if identifier is not present.
     */
    PLIST_API void plist_dict_set_item(plist_t node, const char* key, plist_t item);

    /**
     * Insert a new item at position n in a #PLIST_DICT node.
     *
     * @param node the node of type #PLIST_DICT
     * @param item the new item to insert
     * @param key The identifier of the item to insert. Assert if identifier already present.
     */
    PLIST_API void plist_dict_insert_item(plist_t node, const char* key, plist_t item);

    /**
     * Remove an existing position in a #PLIST_DICT node.
     * Removed position will be freed using #plist_free
     *
     * @param node the node of type #PLIST_DICT
     * @param key The identifier of the item to remove. Assert if identifier is not present.
     */
    PLIST_API void plist_dict_remove_item(plist_t node, const char* key);


    /********************************************
     *                                          *
     *                Getters                   *
     *                                          *
     ********************************************/

    /**
     * Get the parent of a node
     *
     * @param node the parent (NULL if node is root)
     */
    PLIST_API plist_t plist_get_parent(plist_t node);

    /**
     * Get the #plist_type of a node.
     *
     * @param node the node
     * @return the type of the node
     */
    PLIST_API plist_type plist_get_node_type(plist_t node);

    /**
     * Get the value of a #PLIST_KEY node.
     * This function does nothing if node is not of type #PLIST_KEY
     *
     * @param node the node
     * @param val a pointer to a C-string. This function allocates the memory,
     *            caller is responsible for freeing it.
     */
    PLIST_API void plist_get_key_val(plist_t node, char **val);

    /**
     * Get the value of a #PLIST_STRING node.
     * This function does nothing if node is not of type #PLIST_STRING
     *
     * @param node the node
     * @param val a pointer to a C-string. This function allocates the memory,
     *            caller is responsible for freeing it. Data is UTF-8 encoded.
     */
    PLIST_API void plist_get_string_val(plist_t node, char **val);

    /**
     * Get the value of a #PLIST_BOOLEAN node.
     * This function does nothing if node is not of type #PLIST_BOOLEAN
     *
     * @param node the node
     * @param val a pointer to a uint8_t variable.
     */
    PLIST_API void plist_get_bool_val(plist_t node, uint8_t * val);

    /**
     * Get the value of a #PLIST_UINT node.
     * This function does nothing if node is not of type #PLIST_UINT
     *
     * @param node the node
     * @param val a pointer to a uint64_t variable.
     */
    PLIST_API void plist_get_uint_val(plist_t node, uint64_t * val);

    /**
     * Get the value of a #PLIST_REAL node.
     * This function does nothing if node is not of type #PLIST_REAL
     *
     * @param node the node
     * @param val a pointer to a double variable.
     */
    PLIST_API void plist_get_real_val(plist_t node, double *val);

    /**
     * Get the value of a #PLIST_DATA node.
     * This function does nothing if node is not of type #PLIST_DATA
     *
     * @param node the node
     * @param val a pointer to an unallocated char buffer. This function allocates the memory,
     *            caller is responsible for freeing it.
     * @param length the length of the buffer
     */
    PLIST_API void plist_get_data_val(plist_t node, char **val, uint64_t * length);

    /**
     * Get the value of a #PLIST_DATE node.
     * This function does nothing if node is not of type #PLIST_DATE
     *
     * @param node the node
     * @param sec a pointer to an int32_t variable. Represents the number of seconds since 01/01/2001.
     * @param usec a pointer to an int32_t variable. Represents the number of microseconds
     */
    PLIST_API void plist_get_date_val(plist_t node, int32_t * sec, int32_t * usec);


    /********************************************
     *                                          *
     *                Setters                   *
     *                                          *
     ********************************************/

    /**
     * Forces type of node. Changing type of structured nodes is only allowed if node is empty.
     * Reset value of node;
     * @param node the node
     * @param type the key value
     */
    PLIST_API void plist_set_type(plist_t node, plist_type type);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_KEY
     *
     * @param node the node
     * @param val the key value
     */
    PLIST_API void plist_set_key_val(plist_t node, const char *val);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_STRING
     *
     * @param node the node
     * @param val the string value
     */
    PLIST_API void plist_set_string_val(plist_t node, const char *val);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_BOOLEAN
     *
     * @param node the node
     * @param val the boolean value
     */
    PLIST_API void plist_set_bool_val(plist_t node, uint8_t val);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_UINT
     *
     * @param node the node
     * @param val the unsigned integer value
     */
    PLIST_API void plist_set_uint_val(plist_t node, uint64_t val);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_REAL
     *
     * @param node the node
     * @param val the real value
     */
    PLIST_API void plist_set_real_val(plist_t node, double val);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_DATA
     *
     * @param node the node
     * @param val the binary buffer
     * @param length the length of the buffer
     */
    PLIST_API void plist_set_data_val(plist_t node, const char *val, uint64_t length);

    /**
     * Set the value of a node.
     * Forces type of node to #PLIST_DATE
     *
     * @param node the node
     * @param sec the number of seconds since 01/01/2001
     * @param usec the number of microseconds
     */
    PLIST_API void plist_set_date_val(plist_t node, int32_t sec, int32_t usec);


    /********************************************
     *                                          *
     *            Import & Export               *
     *                                          *
     ********************************************/

    /**
     * Export the #plist_t structure to XML format.
     *
     * @param plist the root node to export
     * @param plist_xml a pointer to a C-string. This function allocates the memory,
     *            caller is responsible for freeing it. Data is UTF-8 encoded.
     * @param length a pointer to an uint32_t variable. Represents the length of the allocated buffer.
     */
    PLIST_API void plist_to_xml(plist_t plist, char **plist_xml, uint32_t * length);

    /**
     * Export the #plist_t structure to binary format.
     *
     * @param plist the root node to export
     * @param plist_bin a pointer to a char* buffer. This function allocates the memory,
     *            caller is responsible for freeing it.
     * @param length a pointer to an uint32_t variable. Represents the length of the allocated buffer.
     */
    PLIST_API void plist_to_bin(plist_t plist, char **plist_bin, uint32_t * length);

    /**
     * Import the #plist_t structure from XML format.
     *
     * @param plist_xml a pointer to the xml buffer.
     * @param length length of the buffer to read.
     * @param plist a pointer to the imported plist.
     */
    PLIST_API void plist_from_xml(const char *plist_xml, uint32_t length, plist_t * plist);

    /**
     * Import the #plist_t structure from binary format.
     *
     * @param plist_bin a pointer to the xml buffer.
     * @param length length of the buffer to read.
     * @param plist a pointer to the imported plist.
     */
    PLIST_API void plist_from_bin(const char *plist_bin, uint32_t length, plist_t * plist);


    /********************************************
     *                                          *
     *                 Utils                    *
     *                                          *
     ********************************************/

    /**
     * Get a node from its path. Each path element depends on the associated father node type.
     * For Dictionaries, var args are casted to const char*, for arrays, var args are caster to uint32_t
     * Search is breath first order.
     *
     * @param plist the node to access result from.
     * @param length length of the path to access
     * @return the value to access.
     */
    PLIST_API plist_t plist_access_path(plist_t plist, uint32_t length, ...);

    /**
     * Variadic version of #plist_access_path.
     *
     * @param plist the node to access result from.
     * @param length length of the path to access
     * @param v list of array's index and dic'st key
     * @return the value to access.
     */
    PLIST_API plist_t plist_access_pathv(plist_t plist, uint32_t length, va_list v);

    /**
     * Compare two node values
     *
     * @param node_l left node to compare
     * @param node_r rigth node to compare
     * @return TRUE is type and value match, FALSE otherwise.
     */
    PLIST_API char plist_compare_node_value(plist_t node_l, plist_t node_r);

    /*@}*/

#ifdef __cplusplus
}
#endif
#endif