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//
// Node get functions for Mini-XML, a small XML file parsing library.
//
// https://www.msweet.org/mxml
//
// Copyright © 2014-2024 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#include "mxml-private.h"
//
// 'mxmlGetCDATA()' - Get the value for a CDATA node.
//
// This function gets the string value of a CDATA node. `NULL` is returned if
// the node is not a CDATA element.
//
const char * // O - CDATA value or `NULL`
mxmlGetCDATA(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node || node->type != MXML_TYPE_CDATA)
return (NULL);
// Return the CDATA string...
return (node->value.cdata);
}
//
// 'mxmlGetComment()' - Get the value for a comment node.
//
// This function gets the string value of a comment node. `NULL` is returned
// if the node is not a comment.
//
const char * // O - Comment value or `NULL`
mxmlGetComment(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node || node->type != MXML_TYPE_COMMENT)
return (NULL);
// Return the comment string...
return (node->value.comment);
}
//
// 'mxmlGetCustom()' - Get the value for a custom node.
//
// This function gets the binary value of a custom node. `NULL` is returned if
// the node (or its first child) is not a custom value node.
//
const void * // O - Custom value or `NULL`
mxmlGetCustom(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (NULL);
// Return the custom value...
if (node->type == MXML_TYPE_CUSTOM)
return (node->value.custom.data);
else if (node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_CUSTOM)
return (node->child->value.custom.data);
else
return (NULL);
}
//
// 'mxmlGetDeclaration()' - Get the value for a declaration node.
//
// This function gets the string value of a declaraction node. `NULL` is
// returned if the node is not a declaration.
//
const char * // O - Declaraction value or `NULL`
mxmlGetDeclaration(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node || node->type != MXML_TYPE_DECLARATION)
return (NULL);
// Return the comment string...
return (node->value.declaration);
}
//
// 'mxmlGetDirective()' - Get the value for a processing instruction node.
//
// This function gets the string value of a processing instruction. `NULL` is
// returned if the node is not a processing instruction.
//
const char * // O - Comment value or `NULL`
mxmlGetDirective(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node || node->type != MXML_TYPE_DIRECTIVE)
return (NULL);
// Return the comment string...
return (node->value.directive);
}
//
// 'mxmlGetElement()' - Get the name for an element node.
//
// This function gets the name of an element node. `NULL` is returned if the
// node is not an element node.
//
const char * // O - Element name or `NULL`
mxmlGetElement(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node || node->type != MXML_TYPE_ELEMENT)
return (NULL);
// Return the element name...
return (node->value.element.name);
}
//
// 'mxmlGetFirstChild()' - Get the first child of a node.
//
// This function gets the first child of a node. `NULL` is returned if the node
// has no children.
//
mxml_node_t * // O - First child or `NULL`
mxmlGetFirstChild(mxml_node_t *node) // I - Node to get
{
// Return the first child node...
return (node ? node->child : NULL);
}
//
// 'mxmlGetInteger()' - Get the integer value from the specified node or its
// first child.
//
// This function gets the value of an integer node. `0` is returned if the node
// (or its first child) is not an integer value node.
//
long // O - Integer value or `0`
mxmlGetInteger(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (0);
// Return the integer value...
if (node->type == MXML_TYPE_INTEGER)
return (node->value.integer);
else if (node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_INTEGER)
return (node->child->value.integer);
else
return (0);
}
//
// 'mxmlGetLastChild()' - Get the last child of a node.
//
// This function gets the last child of a node. `NULL` is returned if the node
// has no children.
//
mxml_node_t * // O - Last child or `NULL`
mxmlGetLastChild(mxml_node_t *node) // I - Node to get
{
return (node ? node->last_child : NULL);
}
//
// 'mxmlGetNextSibling()' - Get the next node for the current parent.
//
// This function gets the next node for the current parent. `NULL` is returned
// if this is the last child for the current parent.
//
mxml_node_t *
mxmlGetNextSibling(mxml_node_t *node) // I - Node to get
{
return (node ? node->next : NULL);
}
//
// 'mxmlGetOpaque()' - Get an opaque string value for a node or its first child.
//
// This function gets the string value of an opaque node. `NULL` is returned if
// the node (or its first child) is not an opaque value node.
//
const char * // O - Opaque string or `NULL`
mxmlGetOpaque(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (NULL);
// Return the opaque value...
if (node->type == MXML_TYPE_OPAQUE)
return (node->value.opaque);
else if (node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_OPAQUE)
return (node->child->value.opaque);
else
return (NULL);
}
//
// 'mxmlGetParent()' - Get the parent node.
//
// This function gets the parent of a node. `NULL` is returned for a root node.
//
mxml_node_t * // O - Parent node or `NULL`
mxmlGetParent(mxml_node_t *node) // I - Node to get
{
return (node ? node->parent : NULL);
}
//
// 'mxmlGetPrevSibling()' - Get the previous node for the current parent.
//
// This function gets the previous node for the current parent. `NULL` is
// returned if this is the first child for the current parent.
//
mxml_node_t * // O - Previous node or `NULL`
mxmlGetPrevSibling(mxml_node_t *node) // I - Node to get
{
return (node ? node->prev : NULL);
}
//
// 'mxmlGetReal()' - Get the real value for a node or its first child.
//
// This function gets the value of a real value node. `0.0` is returned if the
// node (or its first child) is not a real value node.
//
double // O - Real value or 0.0
mxmlGetReal(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (0.0);
// Return the real value...
if (node->type == MXML_TYPE_REAL)
return (node->value.real);
else if (node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_REAL)
return (node->child->value.real);
else
return (0.0);
}
//
// 'mxmlGetText()' - Get the text value for a node or its first child.
//
// This function gets the string and whitespace values of a text node. `NULL`
// and `false` are returned if the node (or its first child) is not a text node.
// The `whitespace` argument can be `NULL` if you don't want to know the
// whitespace value.
//
// Note: Text nodes consist of whitespace-delimited words. You will only get
// single words of text when reading an XML file with `MXML_TYPE_TEXT` nodes.
// If you want the entire string between elements in the XML file, you MUST read
// the XML file with `MXML_TYPE_OPAQUE` nodes and get the resulting strings
// using the @link mxmlGetOpaque@ function instead.
//
const char * // O - Text string or `NULL`
mxmlGetText(mxml_node_t *node, // I - Node to get
bool *whitespace) // O - `true` if string is preceded by whitespace, `false` otherwise
{
// Range check input...
if (!node)
{
if (whitespace)
*whitespace = false;
return (NULL);
}
// Return the integer value...
if (node->type == MXML_TYPE_TEXT)
{
if (whitespace)
*whitespace = node->value.text.whitespace;
return (node->value.text.string);
}
else if (node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_TEXT)
{
if (whitespace)
*whitespace = node->child->value.text.whitespace;
return (node->child->value.text.string);
}
else
{
if (whitespace)
*whitespace = false;
return (NULL);
}
}
//
// 'mxmlGetType()' - Get the node type.
//
// This function gets the type of `node`. `MXML_TYPE_IGNORE` is returned if
// `node` is `NULL`.
//
mxml_type_t // O - Type of node
mxmlGetType(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (MXML_TYPE_IGNORE);
// Return the node type...
return (node->type);
}
//
// 'mxmlGetUserData()' - Get the user data pointer for a node.
//
// This function gets the user data pointer associated with `node`.
//
void * // O - User data pointer
mxmlGetUserData(mxml_node_t *node) // I - Node to get
{
// Range check input...
if (!node)
return (NULL);
// Return the user data pointer...
return (node->user_data);
}
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