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/* SVN FILE INFO
 * $Revision: 174 $ : Last Committed Revision
 * $Date: 2008-06-24 10:50:29 -0700 (Tue, 24 Jun 2008) $ : Last Committed Date */
/*
 * "$Id: mxml.h,v 1.1 2007/05/23 20:43:28 david_ko Exp $"
 *
 * Header file for Mini-XML, a small XML-like file parsing library.
 *
 * Copyright 2003-2005 by Michael Sweet.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 */

/*
 * Prevent multiple inclusion...
 */

#ifndef _mxml_h_
#  define _mxml_h_

/*
 * Include necessary headers...
 */

#  include <stdio.h>
#  include <stdlib.h>
#  include <string.h>
#  include <ctype.h>
#  include <errno.h>


/*
 * Constants...
 */

#  define MXML_WRAP             72      /* Wrap XML output at this column position */
#  define MXML_TAB              8       /* Tabs every N columns */

#  define MXML_NO_CALLBACK      0       /* Don't use a type callback */
#  define MXML_INTEGER_CALLBACK mxml_integer_cb
                                        /* Treat all data as integers */
#  define MXML_OPAQUE_CALLBACK  mxml_opaque_cb
                                        /* Treat all data as opaque */
#  define MXML_REAL_CALLBACK    mxml_real_cb
                                        /* Treat all data as real numbers */
#  define MXML_TEXT_CALLBACK    0       /* Treat all data as text */

#  define MXML_NO_PARENT        0       /* No parent for the node */

#  define MXML_DESCEND          1       /* Descend when finding/walking */
#  define MXML_NO_DESCEND       0       /* Don't descend when finding/walking */
#  define MXML_DESCEND_FIRST    -1      /* Descend for first find */

#  define MXML_WS_BEFORE_OPEN   0       /* Callback for before open tag */
#  define MXML_WS_AFTER_OPEN    1       /* Callback for after open tag */
#  define MXML_WS_BEFORE_CLOSE  2       /* Callback for before close tag */
#  define MXML_WS_AFTER_CLOSE   3       /* Callback for after close tag */

#  define MXML_ADD_BEFORE       0       /* Add node before specified node */
#  define MXML_ADD_AFTER        1       /* Add node after specified node */
#  define MXML_ADD_TO_PARENT    NULL    /* Add node relative to parent */


/*
 * Data types...
 */

typedef enum mxml_type_e                /**** The XML node type. ****/
{
  MXML_ELEMENT,                         /* XML element with attributes */
  MXML_INTEGER,                         /* Integer value */
  MXML_OPAQUE,                          /* Opaque string */
  MXML_REAL,                            /* Real value */
  MXML_TEXT,                            /* Text fragment */
  MXML_CUSTOM                           /* Custom data */
} mxml_type_t;

typedef struct mxml_attr_s              /**** An XML element attribute value. ****/
{
  char                  *name;          /* Attribute name */
  char                  *value;         /* Attribute value */
} mxml_attr_t;

typedef struct mxml_value_s             /**** An XML element value. ****/
{
  char                  *name;          /* Name of element */
  int                   num_attrs;      /* Number of attributes */
  mxml_attr_t           *attrs;         /* Attributes */
} mxml_element_t;

typedef struct mxml_text_s              /**** An XML text value. ****/
{
  int                   whitespace;     /* Leading whitespace? */
  char                  *string;        /* Fragment string */
} mxml_text_t;

typedef struct mxml_custom_s            /**** An XML custom value. ****/
{
  void                  *data;          /* Pointer to (allocated) custom data */
  void                  (*destroy)(void *);
                                        /* Pointer to destructor function */
} mxml_custom_t;

typedef union mxml_value_u              /**** An XML node value. ****/
{
  mxml_element_t        element;        /* Element */
  int                   integer;        /* Integer number */
  char                  *opaque;        /* Opaque string */
  double                real;           /* Real number */
  mxml_text_t           text;           /* Text fragment */
  mxml_custom_t         custom;         /* Custom data */
} mxml_value_t;

typedef struct mxml_node_s              /**** An XML node. ****/
{
  mxml_type_t           type;           /* Node type */
  struct mxml_node_s    *next;          /* Next node under same parent */
  struct mxml_node_s    *prev;          /* Previous node under same parent */
  struct mxml_node_s    *parent;        /* Parent node */
  struct mxml_node_s    *child;         /* First child node */
  struct mxml_node_s    *last_child;    /* Last child node */
  mxml_value_t          value;          /* Node value */
} mxml_node_t;

typedef struct mxml_index_s             /**** An XML node index. ****/
{
  char                  *attr;          /* Attribute used for indexing or NULL */
  int                   num_nodes;      /* Number of nodes in index */
  int                   alloc_nodes;    /* Allocated nodes in index */
  int                   cur_node;       /* Current node */
  mxml_node_t           **nodes;        /* Node array */
} mxml_index_t;

typedef int (*mxml_custom_load_cb_t)(mxml_node_t *, const char *);
                                        /**** Custom data load callback function ****/

typedef char *(*mxml_custom_save_cb_t)(mxml_node_t *);  
                                        /**** Custom data save callback function ****/


/*
 * C++ support...
 */

#  ifdef __cplusplus
extern "C" {
#  endif /* __cplusplus */

/*
 * Prototypes...
 */

extern void             mxmlAdd(mxml_node_t *parent, int where,
                                mxml_node_t *child, mxml_node_t *node);
extern void             mxmlDelete(mxml_node_t *node);
extern const char       *mxmlElementGetAttr(mxml_node_t *node, const char *name);
extern void             mxmlElementSetAttr(mxml_node_t *node, const char *name,
                                           const char *value);
extern int              mxmlEntityAddCallback(int (*cb)(const char *name));
extern const char       *mxmlEntityGetName(int val);
extern int              mxmlEntityGetValue(const char *name);
extern void             mxmlEntityRemoveCallback(int (*cb)(const char *name));
extern mxml_node_t      *mxmlFindElement(mxml_node_t *node, mxml_node_t *top,
                                         const char *name, const char *attr,
                                         const char *value, int descend);
extern void             mxmlIndexDelete(mxml_index_t *ind);
extern mxml_node_t      *mxmlIndexEnum(mxml_index_t *ind);
extern mxml_node_t      *mxmlIndexFind(mxml_index_t *ind,
                                       const char *element,
                                       const char *value);
extern mxml_index_t     *mxmlIndexNew(mxml_node_t *node, const char *element,
                                      const char *attr);
extern mxml_node_t      *mxmlIndexReset(mxml_index_t *ind);
extern mxml_node_t      *mxmlLoadFd(mxml_node_t *top, int fd,
                                    mxml_type_t (*cb)(mxml_node_t *));
extern mxml_node_t      *mxmlLoadFile(mxml_node_t *top, FILE *fp,
                                      mxml_type_t (*cb)(mxml_node_t *));
extern mxml_node_t      *mxmlLoadString(mxml_node_t *top, const char *s,
                                        mxml_type_t (*cb)(mxml_node_t *));
extern mxml_node_t      *mxmlNewCustom(mxml_node_t *parent, void *data,
                                       void (*destroy)(void *));
extern mxml_node_t      *mxmlNewElement(mxml_node_t *parent, const char *name);
extern mxml_node_t      *mxmlNewInteger(mxml_node_t *parent, int integer);
extern mxml_node_t      *mxmlNewOpaque(mxml_node_t *parent, const char *opaque);
extern mxml_node_t      *mxmlNewReal(mxml_node_t *parent, double real);
extern mxml_node_t      *mxmlNewText(mxml_node_t *parent, int whitespace,
                                     const char *string);
extern mxml_node_t      *mxmlNewTextf(mxml_node_t *parent, int whitespace,
                                      const char *format, ...)
#    ifdef __GNUC__
__attribute__ ((__format__ (__printf__, 3, 4)))
#    endif /* __GNUC__ */
;
extern void             mxmlRemove(mxml_node_t *node);
extern char             *mxmlSaveAllocString(mxml_node_t *node,
                                             const char *(*cb)(mxml_node_t *, int));
extern int              mxmlSaveFd(mxml_node_t *node, int fd,
                                   const char *(*cb)(mxml_node_t *, int));
extern int              mxmlSaveFile(mxml_node_t *node, FILE *fp,
                                     const char *(*cb)(mxml_node_t *, int));
extern int              mxmlSaveString(mxml_node_t *node, char *buffer,
                                       int bufsize,
                                       const char *(*cb)(mxml_node_t *, int));
extern int              mxmlSetCustom(mxml_node_t *node, void *data,
                                      void (*destroy)(void *));
extern void             mxmlSetCustomHandlers(mxml_custom_load_cb_t load,
                                              mxml_custom_save_cb_t save);
extern int              mxmlSetElement(mxml_node_t *node, const char *name);
extern void             mxmlSetErrorCallback(void (*cb)(const char *));
extern int              mxmlSetInteger(mxml_node_t *node, int integer);
extern int              mxmlSetOpaque(mxml_node_t *node, const char *opaque);
extern int              mxmlSetReal(mxml_node_t *node, double real);
extern int              mxmlSetText(mxml_node_t *node, int whitespace,
                                    const char *string);
extern int              mxmlSetTextf(mxml_node_t *node, int whitespace,
                                     const char *format, ...)
#    ifdef __GNUC__
__attribute__ ((__format__ (__printf__, 3, 4)))
#    endif /* __GNUC__ */
;
extern mxml_node_t      *mxmlWalkNext(mxml_node_t *node, mxml_node_t *top,
                                      int descend);
extern mxml_node_t      *mxmlWalkPrev(mxml_node_t *node, mxml_node_t *top,
                                      int descend);


/*
 * Private functions...
 */

extern void             mxml_error(const char *format, ...);
extern mxml_type_t      mxml_integer_cb(mxml_node_t *node);
extern mxml_type_t      mxml_opaque_cb(mxml_node_t *node);
extern mxml_type_t      mxml_real_cb(mxml_node_t *node);


/*
 * C++ support...
 */

#  ifdef __cplusplus
}
#  endif /* __cplusplus */
#endif /* !_mxml_h_ */


/*
 * End of "$Id: mxml.h,v 1.1 2007/05/23 20:43:28 david_ko Exp $".
 */

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