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mxml(3)				 Mini-XML API			       mxml(3)

NAME
       mxml - Mini-XML API

INCLUDE FILE
       #include <mxml.h>

LIBRARY
       -lmxml

DESCRIPTION
       Mini-XML	 is  a	small XML parsing library that you can use to read XML
       and XML-like data files in your	application  without  requiring	 large
       non-standard  libraries.	  Mini-XML  only requires an ANSI C compatible
       compiler (GCC works, as do most vendors' ANSI C compilers) and a "make"
       program.

       Mini-XML provides the following functionality:

       ·   Reading  of UTF-8 and UTF-16 and writing of UTF-8 encoded XML files
	   and strings.

       ·   Data is stored in a linked-list tree structure, preserving the  XML
	   data hierarchy.

       ·   Supports  arbitrary element names, attributes, and attribute values
	   with no preset limits, just available memory.

       ·   Supports integer, real, opaque ("CDATA"), and text  data  types  in
	   "leaf" nodes.

       ·   Functions for creating, indexing, and managing trees of data.

       ·   "Find"  and	"walk"	functions  for	easily locating and navigating
	   trees of data.

       Mini-XML doesn't do validation or other types of processing on the data
       based upon schema files or other sources of definition information, nor
       does it support character entities other than those required by the XML
       specification.

USING MINI-XML
       Mini-XML provides a single header file which you include:

	   #include <mxml.h>

       Nodes  are  defined  by	the "mxml_node_t" structure; the "type" member
       defines the node type (element, integer, opaque, real, or  text)	 which
       determines  which  value you want to look at in the "value" union.  New
       nodes can be created using the "mxmlNewElement()",  "mxmlNewInteger()",
       "mxmlNewOpaque()",   "mxmlNewReal()",  and  "mxmlNewText()"  functions.
       Only elements can have child nodes, and the top node must  be  an  ele‐
       ment, usually "?xml".

       You load an XML file using the "mxmlLoadFile()" function:

	   FILE *fp;
	   mxml_node_t *tree;

	   fp = fopen("filename.xml", "r");
	   tree = mxmlLoadFile(NULL, fp, MXML_NO_CALLBACK);
	   fclose(fp);

       Similarly, you save an XML file using the "mxmlSaveFile()" function:

	   FILE *fp;
	   mxml_node_t *tree;

	   fp = fopen("filename.xml", "w");
	   mxmlSaveFile(tree, fp, MXML_NO_CALLBACK);
	   fclose(fp);

       The "mxmlLoadString()", "mxmlSaveAllocString()", and "mxmlSaveString()"
       functions load XML node trees from and save XML node trees to strings:

	   char buffer[8192];
	   char *ptr;
	   mxml_node_t *tree;

	   ...
	   tree = mxmlLoadString(NULL, buffer, MXML_NO_CALLBACK);

	   ...
	   mxmlSaveString(tree, buffer, sizeof(buffer),
			  MXML_NO_CALLBACK);

	   ...
	   ptr = mxmlSaveAllocString(tree, MXML_NO_CALLBACK);

       You can find a named element/node using the  "mxmlFindElement()"	 func‐
       tion:

	   mxml_node_t *node = mxmlFindElement(tree, tree, "name",
					       "attr", "value",
					       MXML_DESCEND);

       The  "name", "attr", and "value" arguments can be passed as NULL to act
       as wildcards, e.g.:

	   /* Find the first "a" element */
	   node = mxmlFindElement(tree, tree, "a", NULL, NULL,
				  MXML_DESCEND);

	   /* Find the first "a" element with "href" attribute */
	   node = mxmlFindElement(tree, tree, "a", "href", NULL,
				  MXML_DESCEND);

	   /* Find the first "a" element with "href" to a URL */
	   node = mxmlFindElement(tree, tree, "a", "href",
				  "http://www.easysw.com/~mike/mxml/",
				  MXML_DESCEND);

	   /* Find the first element with a "src" attribute*/
	   node = mxmlFindElement(tree, tree, NULL, "src", NULL,
				  MXML_DESCEND);

	   /* Find the first element with a "src" = "foo.jpg" */
	   node = mxmlFindElement(tree, tree, NULL, "src",
				  "foo.jpg", MXML_DESCEND);

       You can also iterate with the same function:

	   mxml_node_t *node;

	   for (node = mxmlFindElement(tree, tree, "name", NULL,
				       NULL, MXML_DESCEND);
		node != NULL;
		node = mxmlFindElement(node, tree, "name", NULL,
				       NULL, MXML_DESCEND))
	   {
	     ... do something ...
	   }

       To find the value of a specific node in the tree,  use  the  "mxmlFind‐
       Path()" function:

	   mxml_node_t *value = mxmlFindPath(tree, "path/to/*/foo/bar");

       The  "mxmlGetInteger()", "mxmlGetOpaque()", "mxmlGetReal()", and "mxml‐
       GetText()" functions retrieve the value from a node:

	   mxml_node_t *node;

	   int intvalue = mxmlGetInteger(node);

	   const char *opaquevalue = mxmlGetOpaque(node);

	   double realvalue = mxmlGetReal(node);

	   int whitespacevalue;
	   const char *textvalue = mxmlGetText(node, &whitespacevalue);

       Finally, once you are done with the XML data,  use  the	"mxmlDelete()"
       function	 to  recursively free the memory that is used for a particular
       node or the entire tree:

	   mxmlDelete(tree);

ENUMERATIONS
   mxml_sax_event_e
       SAX event type.

       MXML_SAX_CDATA
	    CDATA node

       MXML_SAX_COMMENT
	    Comment node

       MXML_SAX_DATA
	    Data node

       MXML_SAX_DIRECTIVE
	    Processing directive node

       MXML_SAX_ELEMENT_CLOSE
	    Element closed

       MXML_SAX_ELEMENT_OPEN
	    Element opened

   mxml_type_e
       The XML node type.

       MXML_CUSTOM
	    Custom data

       MXML_ELEMENT
	    XML element with attributes

       MXML_IGNORE
	    Ignore/throw away node

       MXML_INTEGER
	    Integer value

       MXML_OPAQUE
	    Opaque string

       MXML_REAL
	    Real value

       MXML_TEXT
	    Text fragment

FUNCTIONS
   mxmlAdd
       Add a node to a tree.

       void mxmlAdd (
	   mxml_node_t *parent,
	   int where,
	   mxml_node_t *child,
	   mxml_node_t *node
       );

       Adds the specified node to the parent. If the  child  argument  is  not
       NULL,  puts  the new node before or after the specified child depending
       on the value of the where argument. If the child argument is NULL, puts
       the new node at the beginning of the child list (MXML_ADD_BEFORE) or at
       the  end	  of   the   child   list   (MXML_ADD_AFTER).	The   constant
       MXML_ADD_TO_PARENT can be used to specify a NULL child pointer.

   mxmlDelete
       Delete a node and all of its children.

       void mxmlDelete (
	   mxml_node_t *node
       );

       If  the	specified  node	 has a parent, this function first removes the
       node from its parent using the mxmlRemove() function.

   mxmlElementDeleteAttr
       Delete an attribute.

       void mxmlElementDeleteAttr (
	   mxml_node_t *node,
	   const char *name
       );

   mxmlElementGetAttr
       Get an attribute.

       const char * mxmlElementGetAttr (
	   mxml_node_t *node,
	   const char *name
       );

       This function returns NULL if the node is not an element or  the	 named
       attribute does not exist.

   mxmlElementSetAttr
       Set an attribute.

       void mxmlElementSetAttr (
	   mxml_node_t *node,
	   const char *name,
	   const char *value
       );

       If  the	named  attribute already exists, the value of the attribute is
       replaced by the new string value. The string value is copied  into  the
       element node. This function does nothing if the node is not an element.

   mxmlElementSetAttrf
       Set an attribute with a formatted value.

       void mxmlElementSetAttrf (
	   mxml_node_t *node,
	   const char *name,
	   const char *format,
	   ...
       );

       If  the	named  attribute already exists, the value of the attribute is
       replaced by the new formatted string. The  formatted  string  value  is
       copied into the element node. This function does nothing if the node is
       not an element.

   mxmlEntityAddCallback
       Add a callback to convert entities to Unicode.

       int  mxmlEntityAddCallback (
	   mxml_entity_cb_t cb
       );

   mxmlEntityGetName
       Get the name that corresponds to the character value.

       const char * mxmlEntityGetName (
	   int val
       );

       If val does not need to be represented  by  a  named  entity,  NULL  is
       returned.

   mxmlEntityGetValue
       Get the character corresponding to a named entity.

       int  mxmlEntityGetValue (
	   const char *name
       );

       The  entity  name can also be a numeric constant. -1 is returned if the
       name is not known.

   mxmlEntityRemoveCallback
       Remove a callback.

       void mxmlEntityRemoveCallback (
	   mxml_entity_cb_t cb
       );

   mxmlFindElement
       Find the named element.

       mxml_node_t * mxmlFindElement (
	   mxml_node_t *node,
	   mxml_node_t *top,
	   const char *name,
	   const char *attr,
	   const char *value,
	   int descend
       );

       The search is constrained by the name, attribute name, and  value;  any
       NULL  names  or	values are treated as wildcards, so different kinds of
       searches can be implemented by looking for all elements of a given name
       or  all elements with a specific attribute. The descend argument deter‐
       mines whether the search descends into child nodes; normally  you  will
       use  MXML_DESCEND_FIRST	for  the initial search and MXML_NO_DESCEND to
       find additional direct descendents of the node. The top	node  argument
       constrains the search to a particular node's children.

   mxmlFindPath
       Find a node with the given path.

       mxml_node_t * mxmlFindPath (
	   mxml_node_t *top,
	   const char *path
       );

       The  "path" is a slash-separated list of element names. The name "*" is
       considered a wildcard for one or more levels of elements.  For example,
       "foo/one/two", "bar/two/one", "*/one", and so forth.

       The  first  child  node of the found node is returned if the given node
       has children and the first child is a value node.

   mxmlGetCDATA
       Get the value for a CDATA node.

       const char * mxmlGetCDATA (
	   mxml_node_t *node
       );

       NULL is returned if the node is not a CDATA element.

   mxmlGetCustom
       Get the value for a custom node.

       const void * mxmlGetCustom (
	   mxml_node_t *node
       );

       NULL is returned if the node (or its first child) is not a custom value
       node.

   mxmlGetElement
       Get the name for an element node.

       const char * mxmlGetElement (
	   mxml_node_t *node
       );

       NULL is returned if the node is not an element node.

   mxmlGetFirstChild
       Get the first child of an element node.

       mxml_node_t * mxmlGetFirstChild (
	   mxml_node_t *node
       );

       NULL  is returned if the node is not an element node or if the node has
       no children.

   mxmlGetInteger
       Get the integer value from the specified node or its first child.

       int  mxmlGetInteger (
	   mxml_node_t *node
       );

       0 is returned if the node (or its first child) is not an integer	 value
       node.

   mxmlGetLastChild
       Get the last child of an element node.

       mxml_node_t * mxmlGetLastChild (
	   mxml_node_t *node
       );

       NULL  is returned if the node is not an element node or if the node has
       no children.

   mxmlGetNextSibling
       Return the node type...

       mxml_node_t * mxmlGetNextSibling (
	   mxml_node_t *node
       );

   mxmlGetOpaque
       Get an opaque string value for a node or its first child.

       const char * mxmlGetOpaque (
	   mxml_node_t *node
       );

       NULL is returned if the node (or its first  child)  is  not  an	opaque
       value node.

   mxmlGetParent
       Get the parent node.

       mxml_node_t * mxmlGetParent (
	   mxml_node_t *node
       );

       NULL is returned for a root node.

   mxmlGetPrevSibling
       Get the previous node for the current parent.

       mxml_node_t * mxmlGetPrevSibling (
	   mxml_node_t *node
       );

       NULL is returned if this is the first child for the current parent.

   mxmlGetReal
       Get the real value for a node or its first child.

       double  mxmlGetReal (
	   mxml_node_t *node
       );

       0.0  is	returned  if the node (or its first child) is not a real value
       node.

   mxmlGetRefCount
       Get the current reference (use) count for a node.

       int  mxmlGetRefCount (
	   mxml_node_t *node
       );

       The initial reference count of new nodes is 1. Use the  mxmlRetain  and
       mxmlRelease  functions  to  increment  and decrement a node's reference
       count.

   mxmlGetText
       Get the text value for a node or its first child.

       const char * mxmlGetText (
	   mxml_node_t *node,
	   int *whitespace
       );

       NULL is returned if the node (or its first child) is not a  text	 node.
       The "whitespace" argument can be NULL.

   mxmlGetType
       Get the node type.

       mxml_type_t  mxmlGetType (
	   mxml_node_t *node
       );

       MXML_IGNORE is returned if "node" is NULL.

   mxmlGetUserData
       Get the user data pointer for a node.

       void * mxmlGetUserData (
	   mxml_node_t *node
       );

   mxmlIndexDelete
       Delete an index.

       void mxmlIndexDelete (
	   mxml_index_t *ind
       );

   mxmlIndexEnum
       Return the next node in the index.

       mxml_node_t * mxmlIndexEnum (
	   mxml_index_t *ind
       );

       Nodes are returned in the sorted order of the index.

   mxmlIndexFind
       Find the next matching node.

       mxml_node_t * mxmlIndexFind (
	   mxml_index_t *ind,
	   const char *element,
	   const char *value
       );

       You  should  call mxmlIndexReset() prior to using this function for the
       first time with a particular set	 of  "element"	and  "value"  strings.
       Passing	NULL  for  both "element" and "value" is equivalent to calling
       mxmlIndexEnum().

   mxmlIndexGetCount
       Get the number of nodes in an index.

       int  mxmlIndexGetCount (
	   mxml_index_t *ind
       );

   mxmlIndexNew
       Create a new index.

       mxml_index_t * mxmlIndexNew (
	   mxml_node_t *node,
	   const char *element,
	   const char *attr
       );

       The index will contain all nodes that contain the named element	and/or
       attribute.  If  both "element" and "attr" are NULL, then the index will
       contain a sorted list of the elements in	 the  node  tree.   Nodes  are
       sorted  by element name and optionally by attribute value if the "attr"
       argument is not NULL.

   mxmlIndexReset
       Reset the enumeration/find pointer in the index and  return  the	 first
       node in the index.

       mxml_node_t * mxmlIndexReset (
	   mxml_index_t *ind
       );

       This  function  should be called prior to using mxmlIndexEnum() or mxm‐
       lIndexFind() for the first time.

   mxmlLoadFd
       Load a file descriptor into an XML node tree.

       mxml_node_t * mxmlLoadFd (
	   mxml_node_t *top,
	   int fd,
	   mxml_load_cb_t cb
       );

       The nodes in the specified file are added to the	 specified  top	 node.
       If  no  top  node  is provided, the XML file MUST be well-formed with a
       single parent node like <?xml> for the entire file. The callback	 func‐
       tion  returns  the  value type that should be used for child nodes.  If
       MXML_NO_CALLBACK is specified then  all	child  nodes  will  be	either
       MXML_ELEMENT or MXML_TEXT nodes.

       The	constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK, and	MXML_TEXT_CALLBACK  are	 defined  for  loading
       child nodes of the specified type.

   mxmlLoadFile
       Load a file into an XML node tree.

       mxml_node_t * mxmlLoadFile (
	   mxml_node_t *top,
	   FILE *fp,
	   mxml_load_cb_t cb
       );

       The  nodes  in  the specified file are added to the specified top node.
       If no top node is provided, the XML file MUST  be  well-formed  with  a
       single  parent node like <?xml> for the entire file. The callback func‐
       tion returns the value type that should be used for  child  nodes.   If
       MXML_NO_CALLBACK	 is  specified	then  all  child  nodes will be either
       MXML_ELEMENT or MXML_TEXT nodes.

       The     constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK,  and	 MXML_TEXT_CALLBACK  are  defined  for loading
       child nodes of the specified type.

   mxmlLoadString
       Load a string into an XML node tree.

       mxml_node_t * mxmlLoadString (
	   mxml_node_t *top,
	   const char *s,
	   mxml_load_cb_t cb
       );

       The nodes in the specified string are added to the specified top	 node.
       If  no  top node is provided, the XML string MUST be well-formed with a
       single parent node like <?xml> for  the	entire	string.	 The  callback
       function	 returns  the  value type that should be used for child nodes.
       If MXML_NO_CALLBACK is specified then all child nodes  will  be	either
       MXML_ELEMENT or MXML_TEXT nodes.

       The	constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK, and	MXML_TEXT_CALLBACK  are	 defined  for  loading
       child nodes of the specified type.

   mxmlNewCDATA
       Create a new CDATA node.

       mxml_node_t * mxmlNewCDATA (
	   mxml_node_t *parent,
	   const char *data
       );

       The  new CDATA node is added to the end of the specified parent's child
       list. The constant MXML_NO_PARENT can be used to specify that  the  new
       CDATA node has no parent. The data string must be nul-terminated and is
       copied into the new node. CDATA nodes use the MXML_ELEMENT type.

   mxmlNewCustom
       Create a new custom data node.

       mxml_node_t * mxmlNewCustom (
	   mxml_node_t *parent,
	   void *data,
	   mxml_custom_destroy_cb_t destroy
       );

       The new custom node is added to the end of the specified parent's child
       list.  The  constant MXML_NO_PARENT can be used to specify that the new
       element node has no parent. NULL can be passed when  the	 data  in  the
       node is not dynamically allocated or is separately managed.

   mxmlNewElement
       Create a new element node.

       mxml_node_t * mxmlNewElement (
	   mxml_node_t *parent,
	   const char *name
       );

       The  new	 element  node	is  added to the end of the specified parent's
       child list. The constant MXML_NO_PARENT can be used to specify that the
       new element node has no parent.

   mxmlNewInteger
       Create a new integer node.

       mxml_node_t * mxmlNewInteger (
	   mxml_node_t *parent,
	   int integer
       );

       The  new	 integer  node	is  added to the end of the specified parent's
       child list. The constant MXML_NO_PARENT can be used to specify that the
       new integer node has no parent.

   mxmlNewOpaque
       Create a new opaque string.

       mxml_node_t * mxmlNewOpaque (
	   mxml_node_t *parent,
	   const char *opaque
       );

       The new opaque node is added to the end of the specified parent's child
       list. The constant MXML_NO_PARENT can be used to specify that  the  new
       opaque node has no parent. The opaque string must be nul-terminated and
       is copied into the new node.

   mxmlNewReal
       Create a new real number node.

       mxml_node_t * mxmlNewReal (
	   mxml_node_t *parent,
	   double real
       );

       The new real number node is added to the end of the specified  parent's
       child list. The constant MXML_NO_PARENT can be used to specify that the
       new real number node has no parent.

   mxmlNewText
       Create a new text fragment node.

       mxml_node_t * mxmlNewText (
	   mxml_node_t *parent,
	   int whitespace,
	   const char *string
       );

       The new text node is added to the end of the specified  parent's	 child
       list.  The  constant MXML_NO_PARENT can be used to specify that the new
       text node has no parent. The whitespace parameter is  used  to  specify
       whether	leading whitespace is present before the node. The text string
       must be nul-terminated and is copied into the new node.

   mxmlNewTextf
       Create a new formatted text fragment node.

       mxml_node_t * mxmlNewTextf (
	   mxml_node_t *parent,
	   int whitespace,
	   const char *format,
	   ...
       );

       The new text node is added to the end of the specified  parent's	 child
       list.  The  constant MXML_NO_PARENT can be used to specify that the new
       text node has no parent. The whitespace parameter is  used  to  specify
       whether	leading	 whitespace  is	 present  before  the node. The format
       string must be nul-terminated and is formatted into the new node.

   mxmlNewXML
       Create a new XML document tree.

       mxml_node_t * mxmlNewXML (
	   const char *version
       );

       The "version" argument specifies the version number to put in the  ?xml
       element node. If NULL, version 1.0 is assumed.

   mxmlRelease
       Release a node.

       int  mxmlRelease (
	   mxml_node_t *node
       );

       When  the  reference count reaches zero, the node (and any children) is
       deleted via mxmlDelete().

   mxmlRemove
       Remove a node from its parent.

       void mxmlRemove (
	   mxml_node_t *node
       );

       Does not free memory used by the node  -	 use  mxmlDelete()  for	 that.
       This function does nothing if the node has no parent.

   mxmlRetain
       Retain a node.

       int  mxmlRetain (
	   mxml_node_t *node
       );

   mxmlSAXLoadFd
       Load a file descriptor into an XML node tree using a SAX callback.

       mxml_node_t * mxmlSAXLoadFd (
	   mxml_node_t *top,
	   int fd,
	   mxml_load_cb_t cb,
	   mxml_sax_cb_t sax_cb,
	   void *sax_data
       );

       The  nodes  in  the specified file are added to the specified top node.
       If no top node is provided, the XML file MUST  be  well-formed  with  a
       single  parent node like <?xml> for the entire file. The callback func‐
       tion returns the value type that should be used for  child  nodes.   If
       MXML_NO_CALLBACK	 is  specified	then  all  child  nodes will be either
       MXML_ELEMENT or MXML_TEXT nodes.

       The     constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK,  and	 MXML_TEXT_CALLBACK  are  defined  for loading
       child nodes of the specified type.

       The SAX callback must call mxmlRetain() for any nodes that need	to  be
       kept  for  later use. Otherwise, nodes are deleted when the parent node
       is closed or after each data, comment, CDATA, or directive node.

   mxmlSAXLoadFile
       Load a file into an XML node tree using a SAX callback.

       mxml_node_t * mxmlSAXLoadFile (
	   mxml_node_t *top,
	   FILE *fp,
	   mxml_load_cb_t cb,
	   mxml_sax_cb_t sax_cb,
	   void *sax_data
       );

       The nodes in the specified file are added to the	 specified  top	 node.
       If  no  top  node  is provided, the XML file MUST be well-formed with a
       single parent node like <?xml> for the entire file. The callback	 func‐
       tion  returns  the  value type that should be used for child nodes.  If
       MXML_NO_CALLBACK is specified then  all	child  nodes  will  be	either
       MXML_ELEMENT or MXML_TEXT nodes.

       The	constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK, and	MXML_TEXT_CALLBACK  are	 defined  for  loading
       child nodes of the specified type.

       The  SAX	 callback must call mxmlRetain() for any nodes that need to be
       kept for later use. Otherwise, nodes are deleted when the  parent  node
       is closed or after each data, comment, CDATA, or directive node.

   mxmlSAXLoadString
       Load a string into an XML node tree using a SAX callback.

       mxml_node_t * mxmlSAXLoadString (
	   mxml_node_t *top,
	   const char *s,
	   mxml_load_cb_t cb,
	   mxml_sax_cb_t sax_cb,
	   void *sax_data
       );

       The  nodes in the specified string are added to the specified top node.
       If no top node is provided, the XML string MUST be well-formed  with  a
       single  parent  node  like  <?xml>  for the entire string. The callback
       function returns the value type that should be used  for	 child	nodes.
       If  MXML_NO_CALLBACK  is	 specified then all child nodes will be either
       MXML_ELEMENT or MXML_TEXT nodes.

       The     constants     MXML_INTEGER_CALLBACK,	 MXML_OPAQUE_CALLBACK,
       MXML_REAL_CALLBACK,  and	 MXML_TEXT_CALLBACK  are  defined  for loading
       child nodes of the specified type.

       The SAX callback must call mxmlRetain() for any nodes that need	to  be
       kept  for  later use. Otherwise, nodes are deleted when the parent node
       is closed or after each data, comment, CDATA, or directive node.

   mxmlSaveAllocString
       Save an XML tree to an allocated string.

       char * mxmlSaveAllocString (
	   mxml_node_t *node,
	   mxml_save_cb_t cb
       );

       This function returns a pointer to a string containing the textual rep‐
       resentation of the XML node tree.  The string should be freed using the
       free() function when you are done with it.  NULL	 is  returned  if  the
       node  would  produce  an	 empty string or if the string cannot be allo‐
       cated.

       The callback argument specifies a function that	returns	 a  whitespace
       string  or  NULL	 before and after each element. If MXML_NO_CALLBACK is
       specified, whitespace will only be added before	MXML_TEXT  nodes  with
       leading	whitespace  and	 before attribute names inside opening element
       tags.

   mxmlSaveFd
       Save an XML tree to a file descriptor.

       int  mxmlSaveFd (
	   mxml_node_t *node,
	   int fd,
	   mxml_save_cb_t cb
       );

       The callback argument specifies a function that	returns	 a  whitespace
       string  or  NULL	 before and after each element. If MXML_NO_CALLBACK is
       specified, whitespace will only be added before	MXML_TEXT  nodes  with
       leading	whitespace  and	 before attribute names inside opening element
       tags.

   mxmlSaveFile
       Save an XML tree to a file.

       int  mxmlSaveFile (
	   mxml_node_t *node,
	   FILE *fp,
	   mxml_save_cb_t cb
       );

       The callback argument specifies a function that	returns	 a  whitespace
       string  or  NULL	 before and after each element. If MXML_NO_CALLBACK is
       specified, whitespace will only be added before	MXML_TEXT  nodes  with
       leading	whitespace  and	 before attribute names inside opening element
       tags.

   mxmlSaveString
       Save an XML node tree to a string.

       int  mxmlSaveString (
	   mxml_node_t *node,
	   char *buffer,
	   int bufsize,
	   mxml_save_cb_t cb
       );

       This function returns the total number of bytes that would be  required
       for the string but only copies (bufsize - 1) characters into the speci‐
       fied buffer.

       The callback argument specifies a function that	returns	 a  whitespace
       string  or  NULL	 before and after each element. If MXML_NO_CALLBACK is
       specified, whitespace will only be added before	MXML_TEXT  nodes  with
       leading	whitespace  and	 before attribute names inside opening element
       tags.

   mxmlSetCDATA
       Set the element name of a CDATA node.

       int  mxmlSetCDATA (
	   mxml_node_t *node,
	   const char *data
       );

       The node is not changed if it (or its first child) is not a CDATA  ele‐
       ment node.

   mxmlSetCustom
       Set the data and destructor of a custom data node.

       int  mxmlSetCustom (
	   mxml_node_t *node,
	   void *data,
	   mxml_custom_destroy_cb_t destroy
       );

       The  node  is  not  changed  if it (or its first child) is not a custom
       node.

   mxmlSetCustomHandlers
       Set the handling functions for custom data.

       void mxmlSetCustomHandlers (
	   mxml_custom_load_cb_t load,
	   mxml_custom_save_cb_t save
       );

       The load function accepts a node pointer and a  data  string  and  must
       return 0 on success and non-zero on error.

       The  save  function  accepts  a node pointer and must return a malloc'd
       string on success and NULL on error.

   mxmlSetElement
       Set the name of an element node.

       int  mxmlSetElement (
	   mxml_node_t *node,
	   const char *name
       );

       The node is not changed if it is not an element node.

   mxmlSetErrorCallback
       Set the error message callback.

       void mxmlSetErrorCallback (
	   mxml_error_cb_t cb
       );

   mxmlSetInteger
       Set the value of an integer node.

       int  mxmlSetInteger (
	   mxml_node_t *node,
	   int integer
       );

       The node is not changed if it (or its first child) is  not  an  integer
       node.

   mxmlSetOpaque
       Set the value of an opaque node.

       int  mxmlSetOpaque (
	   mxml_node_t *node,
	   const char *opaque
       );

       The  node  is  not  changed if it (or its first child) is not an opaque
       node.

   mxmlSetReal
       Set the value of a real number node.

       int  mxmlSetReal (
	   mxml_node_t *node,
	   double real
       );

       The node is not changed if it (or its first child) is not a real number
       node.

   mxmlSetText
       Set the value of a text node.

       int  mxmlSetText (
	   mxml_node_t *node,
	   int whitespace,
	   const char *string
       );

       The node is not changed if it (or its first child) is not a text node.

   mxmlSetTextf
       Set the value of a text node to a formatted string.

       int  mxmlSetTextf (
	   mxml_node_t *node,
	   int whitespace,
	   const char *format,
	   ...
       );

       The node is not changed if it (or its first child) is not a text node.

   mxmlSetUserData
       Set the user data pointer for a node.

       int  mxmlSetUserData (
	   mxml_node_t *node,
	   void *data
       );

   mxmlSetWrapMargin
       Set the wrap margin when saving XML data.

       void mxmlSetWrapMargin (
	   int column
       );

       Wrapping is disabled when "column" is 0.

   mxmlWalkNext
       Walk to the next logical node in the tree.

       mxml_node_t * mxmlWalkNext (
	   mxml_node_t *node,
	   mxml_node_t *top,
	   int descend
       );

       The  descend argument controls whether the first child is considered to
       be the next node. The top node argument	constrains  the	 walk  to  the
       node's children.

   mxmlWalkPrev
       Walk to the previous logical node in the tree.

       mxml_node_t * mxmlWalkPrev (
	   mxml_node_t *node,
	   mxml_node_t *top,
	   int descend
       );

       The descend argument controls whether the previous node's last child is
       considered to be the previous node. The top  node  argument  constrains
       the walk to the node's children.

TYPES
   mxml_custom_destroy_cb_t
       Custom data destructor

       typedef void(*)(void *) mxml_custom_destroy_cb_t;

   mxml_custom_load_cb_t
       Custom data load callback function

       typedef int(*)(mxml_node_t *, const char *) mxml_custom_load_cb_t;

   mxml_custom_save_cb_t
       Custom data save callback function

       typedef char *(*)(mxml_node_t *) mxml_custom_save_cb_t;

   mxml_entity_cb_t
       Entity callback function

       typedef int(*)(const char *) mxml_entity_cb_t;

   mxml_error_cb_t
       Error callback function

       typedef void(*)(const char *) mxml_error_cb_t;

   mxml_index_t
       An XML node index.

       typedef struct mxml_index_s mxml_index_t;

   mxml_load_cb_t
       Load callback function

       typedef mxml_type_t(*)(mxml_node_t *) mxml_load_cb_t;

   mxml_node_t
       An XML node.

       typedef struct mxml_node_s mxml_node_t;

   mxml_save_cb_t
       Save callback function

       typedef const char *(*)(mxml_node_t *, int) mxml_save_cb_t;

   mxml_sax_cb_t
       SAX callback function

       typedef void(*)(mxml_node_t *, mxml_sax_event_t, void *) mxml_sax_cb_t;

   mxml_sax_event_t
       SAX event type.

       typedef enum mxml_sax_event_e mxml_sax_event_t;

   mxml_type_t
       The XML node type.

       typedef enum mxml_type_e mxml_type_t;

SEE ALSO
       mxmldoc(1), Mini-XML Programmers Manual, http://www.minixml.org/

COPYRIGHT
       Copyright 2003-2011 by Michael Sweet.

08/30/15			 Mini-XML API			       mxml(3)
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