MINI_XML 函数文档

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最新推荐文章于 2023-03-18 20:48:42 发布

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本文提供了一套完整的Mini-XML2.4 XML文档操作指南，包括节点添加、删除、属性设置等核心功能，以及CDATA、实体、元素、属性、回调函数等详细解释。

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中文文档地址 http://blog.youkuaiyun.com/bluesonic/article/details/3887143#comments

Library Reference

Functions
Data Types
Constants
- mxml_sax_event_e
- mxml_type_e

Functions

mxmlAdd

Add a node to a tree.

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

Parameters

parent

Parent node

where

Where to add, MXML_ADD_BEFORE or MXML_ADD_AFTER

child

Child node for where or MXML_ADD_TO_PARENT

node

Node to add

Discussion

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
);

Parameters

node

Node to delete

Discussion

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

Mini-XML 2.4 mxmlElementDeleteAttr

Delete an attribute.

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

Parameters

node

Element

name

Attribute name

mxmlElementGetAttr

Get an attribute.

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

Parameters

node

Element node

name

Name of attribute

Return Value

Attribute value or NULL

Discussion

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
);

Parameters

node

Element node

name

Name of attribute

value

Attribute value

Discussion

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.

Mini-XML 2.3 mxmlElementSetAttrf

Set an attribute with a formatted value.

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

Parameters

node

Element node

name

Name of attribute

format

Printf-style attribute value

...

Additional arguments as needed

Discussion

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
);

Parameters

Callback function to add

Return Value

0 on success, -1 on failure

mxmlEntityGetName

Get the name that corresponds to the character value.

const char *mxmlEntityGetName (
int val
);

Parameters

val

Character value

Return Value

Entity name or NULL

Discussion

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
);

Parameters

name

Entity name

Return Value

Character value or -1 on error

Discussion

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
);

Parameters

Callback function to remove

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
);

Parameters

node

Current node

top

Top node

name

Element name or NULL for any

attr

Attribute name, or NULL for none

value

Attribute value, or NULL for any

descend

Descend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST

Return Value

Element node or NULL

Discussion

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 determines 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.

Mini-XML 2.7 mxmlFindPath

Find a node with the given path.

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

Parameters

top

Top node

path

Path to element

Return Value

Found node or NULL

Discussion

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.

Mini-XML 2.7 mxmlGetCDATA

Get the value for a CDATA node.

const char *mxmlGetCDATA (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

CDATA value or NULL

Discussion

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

Mini-XML 2.7 mxmlGetCustom

Get the value for a custom node.

const void *mxmlGetCustom (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Custom value or NULL

Discussion

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

Mini-XML 2.7 mxmlGetElement

Get the name for an element node.

const char *mxmlGetElement (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Element name or NULL

Discussion

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

Mini-XML 2.7 mxmlGetFirstChild

Get the first child of an element node.

mxml_node_t *mxmlGetFirstChild (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

First child or NULL

Discussion

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

Mini-XML 2.7 mxmlGetInteger

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

int mxmlGetInteger (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Integer value or 0

Discussion

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

Mini-XML 2.7 mxmlGetLastChild

Get the last child of an element node.

mxml_node_t *mxmlGetLastChild (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Last child or NULL

Discussion

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
);

Parameters

node

Node to get

Return Value

Get the next node for the current parent.

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

Mini-XML 2.7 mxmlGetOpaque

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

const char *mxmlGetOpaque (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Opaque string or NULL

Discussion

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

Mini-XML 2.7 mxmlGetParent

Get the parent node.

mxml_node_t *mxmlGetParent (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Parent node or NULL

Discussion

NULL is returned for a root node.

Mini-XML 2.7 mxmlGetPrevSibling

Get the previous node for the current parent.

mxml_node_t *mxmlGetPrevSibling (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Previous node or NULL

Discussion

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

Mini-XML 2.7 mxmlGetReal

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

double mxmlGetReal (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Real value or 0.0

Discussion

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

Mini-XML 2.7 mxmlGetRefCount

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

int mxmlGetRefCount (
mxml_node_t *node
);

Parameters

node

Node

Return Value

Reference count

Discussion

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

Mini-XML 2.7 mxmlGetText

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

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

Parameters

node

Node to get

whitespace

1 if string is preceded by whitespace, 0 otherwise

Return Value

Text string or NULL

Discussion

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

Mini-XML 2.7 mxmlGetType

Get the node type.

mxml_type_t mxmlGetType (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

Type of node

Discussion

MXML_IGNORE is returned if "node" is NULL.

Mini-XML 2.7 mxmlGetUserData

Get the user data pointer for a node.

void *mxmlGetUserData (
mxml_node_t *node
);

Parameters

node

Node to get

Return Value

User data pointer

mxmlIndexDelete

Delete an index.

void mxmlIndexDelete (
mxml_index_t *ind
);

Parameters

ind

Index to delete

mxmlIndexEnum

Return the next node in the index.

mxml_node_t *mxmlIndexEnum (
mxml_index_t *ind
);

Parameters

ind

Index to enumerate

Return Value

Next node or NULL if there is none

Discussion

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
);

Parameters

ind

Index to search

element

Element name to find, if any

value

Attribute value, if any

Return Value

Node or NULL if none found

Discussion

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().

Mini-XML 2.7 mxmlIndexGetCount

Get the number of nodes in an index.

int mxmlIndexGetCount (
mxml_index_t *ind
);

Parameters

ind

Index of nodes

Return Value

Number of nodes in index

mxmlIndexNew

Create a new index.

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

Parameters

node

XML node tree

element

Element to index or NULL for all

attr

Attribute to index or NULL for none

Return Value

New index

Discussion

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
);

Parameters

ind

Index to reset

Return Value

First node or NULL if there is none

Discussion

This function should be called prior to using mxmlIndexEnum() or mxmlIndexFind() 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
);

Parameters

top

Top node

File descriptor to read from

Callback function or MXML_NO_CALLBACK

Return Value

First node or NULL if the file could not be read.

Discussion

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 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.

mxmlLoadFile

Load a file into an XML node tree.

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

Parameters

top

Top node

File to read from

Callback function or MXML_NO_CALLBACK

Return Value

First node or NULL if the file could not be read.

Discussion

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
);

Parameters

top

Top node

String to load

Callback function or MXML_NO_CALLBACK

Return Value

First node or NULL if the string has errors.

Discussion

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.

Mini-XML 2.3 mxmlNewCDATA

Create a new CDATA node.

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

Parameters

parent

Parent node or MXML_NO_PARENT

data

Data string

Return Value

New node

Discussion

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.

Mini-XML 2.1 mxmlNewCustom

Create a new custom data node.

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

Parameters

parent

Parent node or MXML_NO_PARENT

data

Pointer to data

destroy

Function to destroy data

Return Value

New node

Discussion

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
);

Parameters

parent

Parent node or MXML_NO_PARENT

name

Name of element

Return Value

New node

Discussion

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
);

Parameters

parent

Parent node or MXML_NO_PARENT

integer

Integer value

Return Value

New node

Discussion

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
);

Parameters

parent

Parent node or MXML_NO_PARENT

opaque

Opaque string

Return Value

New node

Discussion

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
);

Parameters

parent

Parent node or MXML_NO_PARENT

real

Real number value

Return Value

New node

Discussion

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
);

Parameters

parent

Parent node or MXML_NO_PARENT

whitespace

1 = leading whitespace, 0 = no whitespace

string

String

Return Value

New node

Discussion

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,
    ...
);

Parameters

parent

Parent node or MXML_NO_PARENT

whitespace

1 = leading whitespace, 0 = no whitespace

format

Printf-style frmat string

...

Additional args as needed

Return Value

New node

Discussion

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.

Mini-XML 2.3 mxmlNewXML

Create a new XML document tree.

mxml_node_t *mxmlNewXML (
const char *version
);

Parameters

version

Version number to use

Return Value

New ?xml node

Discussion

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

Mini-XML 2.3 mxmlRelease

Release a node.

int mxmlRelease (
mxml_node_t *node
);

Parameters

node

Node

Return Value

New reference count

Discussion

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
);

Parameters

node

Node to remove

Discussion

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

Mini-XML 2.3 mxmlRetain

Retain a node.

int mxmlRetain (
mxml_node_t *node
);

Parameters

node

Node

Return Value

New reference count

Mini-XML 2.3 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
);

Parameters

top

Top node

File descriptor to read from

Callback function or MXML_NO_CALLBACK

sax_cb

SAX callback or MXML_NO_CALLBACK

sax_data

SAX user data

Return Value

First node or NULL if the file could not be read.

Discussion

Mini-XML 2.3 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
);

Parameters

top

Top node

File to read from

Callback function or MXML_NO_CALLBACK

sax_cb

SAX callback or MXML_NO_CALLBACK

sax_data

SAX user data

Return Value

First node or NULL if the file could not be read.

Discussion

Mini-XML 2.3 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
);

Parameters

top

Top node

String to load

Callback function or MXML_NO_CALLBACK

sax_cb

SAX callback or MXML_NO_CALLBACK

sax_data

SAX user data

Return Value

First node or NULL if the string has errors.

Discussion

mxmlSaveAllocString

Save an XML tree to an allocated string.

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

Parameters

node

Node to write

Whitespace callback or MXML_NO_CALLBACK

Return Value

Allocated string or NULL

Discussion

This function returns a pointer to a string containing the textual representation 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 allocated.

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
);

Parameters

node

Node to write

File descriptor to write to

Whitespace callback or MXML_NO_CALLBACK

Return Value

0 on success, -1 on error.

Discussion

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
);

Parameters

node

Node to write

File to write to

Whitespace callback or MXML_NO_CALLBACK

Return Value

0 on success, -1 on error.

Discussion

mxmlSaveString

Save an XML node tree to a string.

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

Parameters

node

Node to write

buffer

String buffer

bufsize

Size of string buffer

Whitespace callback or MXML_NO_CALLBACK

Return Value

Size of string

Discussion

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

Mini-XML 2.3 mxmlSetCDATA

Set the element name of a CDATA node.

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

Parameters

node

Node to set

data

New data string

Return Value

0 on success, -1 on failure

Discussion

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

Mini-XML 2.1 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
);

Parameters

node

Node to set

data

New data pointer

destroy

New destructor function

Return Value

0 on success, -1 on failure

Discussion

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
);

Parameters

load

Load function

save

Save function

Discussion

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
);

Parameters

node

Node to set

name

New name string

Return Value

0 on success, -1 on failure

Discussion

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
);

Parameters

Error callback function

mxmlSetInteger

Set the value of an integer node.

int mxmlSetInteger (
mxml_node_t *node,
int integer
);

Parameters

node

Node to set

integer

Integer value

Return Value

0 on success, -1 on failure

Discussion

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
);

Parameters

node

Node to set

opaque

Opaque string

Return Value

0 on success, -1 on failure

Discussion

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
);

Parameters

node

Node to set

real

Real number value

Return Value

0 on success, -1 on failure

Discussion

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
);

Parameters

node

Node to set

whitespace

1 = leading whitespace, 0 = no whitespace

string

String

Return Value

0 on success, -1 on failure

Discussion

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,
    ...
);

Parameters

node

Node to set

whitespace

1 = leading whitespace, 0 = no whitespace

format

Printf-style format string

...

Additional arguments as needed

Return Value

0 on success, -1 on failure

Discussion

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

Mini-XML 2.7 mxmlSetUserData

Set the user data pointer for a node.

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

Parameters

node

Node to set

data

User data pointer

Return Value

0 on success, -1 on failure

Mini-XML 2.3 mxmlSetWrapMargin

Set the wrap margin when saving XML data.

void mxmlSetWrapMargin (
int column
);

Parameters

column

Column for wrapping, 0 to disable wrapping

Discussion

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
);

Parameters

node

Current node

top

Top node

descend

Descend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST

Return Value

Next node or NULL

Discussion

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
);

Parameters

node

Current node

top

Top node

descend

Descend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST

Return Value

Previous node or NULL

Discussion

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.