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/*-------------------------------------------------------------------------------
Name : document.c
Author : Marvin Raaijmakers
Description : Provides functions for XmlDocument
Date of last change: ?
History : ?
Copyright (C) 2005-2006 Marvin Raaijmakers
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
You can contact me at: marvinr(at)users(dot)sf(dot)net
(replace (at) by @ and (dot) by .)
---------------------------------------------------------------------------------*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <mxml.h>
XmlAttributeName
*XmlGetAttributeName ( char *attr_name,
XmlDocument *document,
Boolean create_new )
/*
Input:
attr_name - The name of the XmlAttributeName to get
document - The document that contains the type
create_new - Indicates whether the XmlAttributeName should be created
if it doesn't exist.
Output:
-
Returns:
A pointer that points to the XmlAttributeName which name is attr_name. If
the XmlAttributeName doesn't exist and create_new is FALSE, NULL will be
returned.
Description:
This function returns a pointer to the XmlAttributeName, in document, whos
name is attr_name. If no such XmlAttributeName exists and create_new is TRUE,
it will be created.
*/
{
XmlAttributeName *attr,
*prev_attr,
*next_attr;
for (prev_attr = NULL, attr = document->attribute_names.head;
attr != NULL && strcmp(attr->name, attr_name) < 0;
prev_attr = attr, attr = attr->next)
; /* NULL Statement */
if (attr == NULL || strcmp(attr->name, attr_name) > 0)
{
if (create_new)
{
next_attr = attr;
attr = XmlMalloc(sizeof(XmlAttributeName));
attr->name = XmlMalloc(strlen(attr_name)+1);
strcpy (attr->name, attr_name);
if (prev_attr == NULL)
{
document->attribute_names.head = attr;
}
else
{
prev_attr->next = attr;
}
attr->next = next_attr;
if (next_attr == NULL)
{
document->attribute_names.tail = attr;
}
}
else
{
attr = NULL;
}
}
return (attr);
}
XmlElementType
*XmlGetElementType ( char *type_name,
XmlDocument *document,
Boolean create_new )
/*
Input:
type_name - The name of the XmlElementType to get
document - The document that contains the type
create_new - Indicates whether the XmlElementType should be created if
it doesn't exist.
Output:
-
Returns:
A pointer that points to the XmlElementType which name is type_name. If the
XmlElementType doesn't exist and create_new is FALSE, NULL will be returned.
Description:
This function returns a pointer to the XmlElementType, in document, whos
name is type_name. If no such XmlElementType exists and create_new is TRUE,
it will be created.
*/
{
XmlElementType *type,
*prev_type,
*next_type;
for (prev_type = NULL, type = document->element_types.head;
type != NULL && strcmp(type->type, type_name) < 0;
prev_type = type, type = type->next)
; /* NULL Statement */
if (type == NULL || strcmp(type->type, type_name) > 0)
{
if (create_new)
{
next_type = type;
type = XmlMalloc(sizeof(XmlElementType));
type->type = XmlMalloc(strlen(type_name)+1);
strcpy (type->type, type_name);
if (prev_type == NULL)
{
document->element_types.head = type;
}
else
{
prev_type->next = type;
}
type->next = next_type;
if (next_type == NULL)
{
document->element_types.tail = type;
}
}
else
{
type = NULL;
}
}
return (type);
}
void
XmlFreeDocument (XmlDocument *document)
/*
Input:
document - A pointer to the XmlDocument to free
Output:
-
Returns:
-
Description:
This function frees the contents of document and document itself.
*/
{
XmlAttributeName *attribute_name;
XmlElementType *element_type;
void *next;
XmlClearContentList (&document->contents);
/* Free the element types */
for (element_type = document->element_types.head;
element_type != NULL;
element_type = next)
{
next = element_type->next;
XmlFree (element_type->type);
XmlFree (element_type);
}
/* Free the attribute names */
for (attribute_name = document->attribute_names.head;
attribute_name != NULL;
attribute_name = next)
{
next = attribute_name->next;
XmlFree (attribute_name->name);
XmlFree (attribute_name);
}
XmlFree (document);
}
XmlDocument
*XmlCreateDocument (void)
/*
Input:
-
Output:
-
Returns:
A pointer to a new and initialized XmlDocument.
Description:
This function creates a new and initialized XmlDocument.
*/
{
XmlDocument *document;
/* Create the new document */
document = XmlMalloc(sizeof(XmlDocument));
/* Initialize the new document: */
document->contents.head = document->contents.tail = NULL;
document->contents.num_elements = 0;
document->contents.prev_request.index = INT_MAX;
document->element_types.head = document->element_types.tail = NULL;
document->attribute_names.head = document->attribute_names.tail = NULL;
return (document);
}
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