Data Structures | Typedefs | Enumerations | Functions
Simple_XML

Simplistic relaxed SAX-like XML parser. More...

Data Structures

struct  _Eina_Simple_XML_Attribute
 
struct  _Eina_Simple_XML_Node
 
struct  _Eina_Simple_XML_Node_Tag
 
struct  _Eina_Simple_XML_Node_Data
 

Typedefs

typedef struct _Eina_Simple_XML_Node Eina_Simple_XML_Node
 
typedef struct _Eina_Simple_XML_Node_Tag Eina_Simple_XML_Node_Root
 
typedef struct _Eina_Simple_XML_Node_Tag Eina_Simple_XML_Node_Tag
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_Data
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_CData
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_Processing
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_Doctype
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_Doctype_Child
 
typedef struct _Eina_Simple_XML_Node_Data Eina_Simple_XML_Node_Comment
 
typedef struct _Eina_Simple_XML_Attribute Eina_Simple_XML_Attribute
 
typedef enum _Eina_Simple_XML_Node_Type Eina_Simple_XML_Node_Type
 
typedef enum _Eina_Simple_XML_Type Eina_Simple_XML_Type
 
typedef Eina_Bool(* Eina_Simple_XML_Cb) (void *data, Eina_Simple_XML_Type type, const char *content, unsigned offset, unsigned length)
 
typedef Eina_Bool(* Eina_Simple_XML_Attribute_Cb) (void *data, const char *key, const char *value)
 

Enumerations

enum  _Eina_Simple_XML_Node_Type {
  EINA_SIMPLE_XML_NODE_ROOT = 0,
  EINA_SIMPLE_XML_NODE_TAG,
  EINA_SIMPLE_XML_NODE_DATA,
  EINA_SIMPLE_XML_NODE_CDATA,
  EINA_SIMPLE_XML_NODE_PROCESSING,
  EINA_SIMPLE_XML_NODE_DOCTYPE,
  EINA_SIMPLE_XML_NODE_COMMENT,
  EINA_SIMPLE_XML_NODE_DOCTYPE_CHILD
}
 
enum  _Eina_Simple_XML_Type {
  EINA_SIMPLE_XML_OPEN = 0,
  EINA_SIMPLE_XML_OPEN_EMPTY,
  EINA_SIMPLE_XML_CLOSE,
  EINA_SIMPLE_XML_DATA,
  EINA_SIMPLE_XML_CDATA,
  EINA_SIMPLE_XML_ERROR,
  EINA_SIMPLE_XML_PROCESSING,
  EINA_SIMPLE_XML_DOCTYPE,
  EINA_SIMPLE_XML_COMMENT,
  EINA_SIMPLE_XML_IGNORED,
  EINA_SIMPLE_XML_DOCTYPE_CHILD
}
 a simple XML type. More...
 

Functions

Eina_Bool eina_simple_xml_parse (const char *buf, unsigned buflen, Eina_Bool strip, Eina_Simple_XML_Cb func, const void *data)
 Parses a section of XML string text. More...
 
const char * eina_simple_xml_tag_attributes_find (const char *buf, unsigned buflen)
 Given the contents of a tag, find where the attributes start. More...
 
Eina_Bool eina_simple_xml_attributes_parse (const char *buf, unsigned buflen, Eina_Simple_XML_Attribute_Cb func, const void *data)
 Given a buffer with xml attributes, parse them to key=value pairs. More...
 
Eina_Bool eina_simple_xml_attribute_w3c_parse (const char *buf, Eina_Simple_XML_Attribute_Cb func, const void *data)
 Given a buffer with the xml value of an attributes, parse them to key:value pairs. More...
 
Eina_Simple_XML_Attributeeina_simple_xml_attribute_new (Eina_Simple_XML_Node_Tag *parent, const char *key, const char *value)
 Creates (and appends) new attribute to tag. More...
 
void eina_simple_xml_attribute_free (Eina_Simple_XML_Attribute *attr)
 Removes attribute from parent and deletes it. More...
 
Eina_Simple_XML_Node_Tageina_simple_xml_node_tag_new (Eina_Simple_XML_Node_Tag *parent, const char *name)
 Creates new tag. More...
 
void eina_simple_xml_node_tag_free (Eina_Simple_XML_Node_Tag *tag)
 Removes tag from parent and deletes it. More...
 
Eina_Simple_XML_Node_Dataeina_simple_xml_node_data_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new data. More...
 
void eina_simple_xml_node_data_free (Eina_Simple_XML_Node_Data *node)
 Removes data from parent and deletes it. More...
 
Eina_Simple_XML_Node_CDataeina_simple_xml_node_cdata_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new cdata. More...
 
void eina_simple_xml_node_cdata_free (Eina_Simple_XML_Node_Data *node)
 Removes cdata from parent and deletes it. More...
 
Eina_Simple_XML_Node_Doctype_Childeina_simple_xml_node_doctype_child_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new doctype child. More...
 
void eina_simple_xml_node_doctype_child_free (Eina_Simple_XML_Node_Data *node)
 Removes doctype child from parent and deletes it. More...
 
Eina_Simple_XML_Node_Processingeina_simple_xml_node_processing_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new processing. More...
 
void eina_simple_xml_node_processing_free (Eina_Simple_XML_Node_Data *node)
 Removes processing from parent and deletes it. More...
 
Eina_Simple_XML_Node_Doctypeeina_simple_xml_node_doctype_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new doctype. More...
 
void eina_simple_xml_node_doctype_free (Eina_Simple_XML_Node_Data *node)
 Removes doctype from parent and deletes it. More...
 
Eina_Simple_XML_Node_Commenteina_simple_xml_node_comment_new (Eina_Simple_XML_Node_Tag *parent, const char *contents, size_t length)
 Creates new comment. More...
 
void eina_simple_xml_node_comment_free (Eina_Simple_XML_Node_Data *node)
 Removes comment from parent and deletes it. More...
 
Eina_Simple_XML_Node_Rooteina_simple_xml_node_load (const char *buf, unsigned buflen, Eina_Bool strip)
 Loads a XML node tree based on the given string. More...
 
void eina_simple_xml_node_root_free (Eina_Simple_XML_Node_Root *root)
 Frees node tree build with eina_simple_xml_node_load() More...
 
char * eina_simple_xml_node_dump (Eina_Simple_XML_Node *node, const char *indent)
 Converts the node tree under the given element to a XML string. More...
 

Detailed Description

Simplistic relaxed SAX-like XML parser.

This parser is far from being compliant with XML standard, but will do for most XMLs out there. If you know that your format is simple and will not vary in future with strange corner cases, then you can use it safely.

The parser is SAX like, that is, it will tokenize contents and call you back so you can take some action. No contents are allocated during this parser work and it's not recursive, so you can use it with a very large document without worries.

It will not validate the document anyhow, neither it will create a tree hierarchy. That's up to you.

Accordingly to XML, open tags may contain attributes. This parser will not tokenize this. If you want you can use eina_simple_xml_tag_attributes_find() and then eina_simple_xml_attributes_parse().

For more information, see this example.

Typedef Documentation

◆ Eina_Simple_XML_Node_Doctype_Child

Since
1.8

Enumeration Type Documentation

◆ _Eina_Simple_XML_Node_Type

Enumerator
EINA_SIMPLE_XML_NODE_DOCTYPE_CHILD 
Since
1.8

◆ _Eina_Simple_XML_Type

a simple XML type.

Enumerator
EINA_SIMPLE_XML_OPEN 

<tag attribute="value">

EINA_SIMPLE_XML_OPEN_EMPTY 

<tag attribute="value" />

EINA_SIMPLE_XML_CLOSE 

</tag>

EINA_SIMPLE_XML_DATA 

tag text data

EINA_SIMPLE_XML_CDATA 

<![CDATA[something]]>

EINA_SIMPLE_XML_ERROR 

error contents

EINA_SIMPLE_XML_PROCESSING 

<?xml ... ?> <?php .. ?>

EINA_SIMPLE_XML_DOCTYPE 

<!DOCTYPE html

EINA_SIMPLE_XML_COMMENT 

<!-- something –>

EINA_SIMPLE_XML_IGNORED 

whatever is ignored by parser, like whitespace

EINA_SIMPLE_XML_DOCTYPE_CHILD 

<!DOCTYPE_CHILD

Since
1.8

Function Documentation

◆ eina_simple_xml_parse()

Eina_Bool eina_simple_xml_parse ( const char *  buf,
unsigned  buflen,
Eina_Bool  strip,
Eina_Simple_XML_Cb  func,
const void *  data 
)

Parses a section of XML string text.

Parameters
[in]bufThe input string. May not contain \0 terminator.
[in]buflenThe input string size.
[in]stripWhenever this parser should strip leading and trailing whitespace. These whitespace will still be issued, but as type EINA_SIMPLE_XML_IGNORED.
[in]funcWhat to call back while parse to do some action. The first parameter is the given user data, the second is the token type, the third is the pointer to content start (it's not a NULL terminated string!), the fourth is where this content is located inside buf (does not include tag start, for instance "<!DOCTYPE value>" the offset points at "value"), the fifth is the size of the content. Whenever this function return EINA_FALSE the parser will abort.
[in]dataWhat to give as context to func.
Returns
EINA_TRUE on success, or EINA_FALSE if it was aborted by user or parsing error.

◆ eina_simple_xml_tag_attributes_find()

const char* eina_simple_xml_tag_attributes_find ( const char *  buf,
unsigned  buflen 
)

Given the contents of a tag, find where the attributes start.

Parameters
[in]bufThe input string. May not contain \0 terminator.
[in]buflenThe input string size.
Returns
Pointer to the start of attributes, it can be used to feed eina_simple_xml_attributes_parse(). NULL is returned if no attributes were found.

The tag contents is returned by eina_simple_xml_parse() when type is EINA_SIMPLE_XML_OPEN or EINA_SIMPLE_XML_OPEN_EMPTY.

◆ eina_simple_xml_attributes_parse()

Eina_Bool eina_simple_xml_attributes_parse ( const char *  buf,
unsigned  buflen,
Eina_Simple_XML_Attribute_Cb  func,
const void *  data 
)

Given a buffer with xml attributes, parse them to key=value pairs.

Parameters
[in]bufThe input string. May not contain \0 terminator.
[in]buflenThe input string size.
[in]funcWhat to call back while parse to do some action. The first parameter is the given user data, the second is the key (null-terminated) and the last is the value (null terminated). These strings should not be modified and reference is just valid until the function return.
[in]dataData to pass to the callback function.
Returns
EINA_TRUE on success, or EINA_FALSE if it was aborted by user or parsing error.

◆ eina_simple_xml_attribute_w3c_parse()

Eina_Bool eina_simple_xml_attribute_w3c_parse ( const char *  buf,
Eina_Simple_XML_Attribute_Cb  func,
const void *  data 
)

Given a buffer with the xml value of an attributes, parse them to key:value pairs.

Parameters
[in]bufthe input string. Need to contain \0 terminator.
[in]funcwhat to call back while parse to do some action. The first parameter is the given user data, the second is the key (null-terminated) and the last is the value (null terminated). These strings should not be modified and reference is just valid until the function return.
[in]datadata to pass to the callback function.
Returns
EINA_TRUE on success or EINA_FALSE if it was aborted by user or parsing error.
Since
1.14

◆ eina_simple_xml_attribute_new()

Eina_Simple_XML_Attribute* eina_simple_xml_attribute_new ( Eina_Simple_XML_Node_Tag parent,
const char *  key,
const char *  value 
)

Creates (and appends) new attribute to tag.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the attribute will be appended to attributes list.
[in]keyNull-terminated string. Must not be NULL.
[in]valueNull-terminated string. If NULL, the empty string will be used.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_attribute_free() or indirectly with eina_simple_xml_node_tag_free().

References eina_inlist_append(), EINA_INLIST_GET, EINA_MAGIC_SET, eina_mempool_malloc(), eina_stringshare_add(), and ERR.

◆ eina_simple_xml_attribute_free()

void eina_simple_xml_attribute_free ( Eina_Simple_XML_Attribute attr)

Removes attribute from parent and deletes it.

Parameters
[in]attrattribute to release memory.

References EINA_INLIST_GET, eina_inlist_remove(), EINA_MAGIC_NONE, EINA_MAGIC_SET, eina_mempool_free(), and eina_stringshare_del().

◆ eina_simple_xml_node_tag_new()

Eina_Simple_XML_Node_Tag* eina_simple_xml_node_tag_new ( Eina_Simple_XML_Node_Tag parent,
const char *  name 
)

Creates new tag.

If parent is provided, it is automatically appended.

Parameters
[in]parentIf provided, will be set in the resulting structure as well as the tag will be appended to children list.
[in]nameNull-terminated string. Must not be NULL.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_tag_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

References EINA_MAGIC_SET, eina_mempool_malloc(), and ERR.

◆ eina_simple_xml_node_tag_free()

void eina_simple_xml_node_tag_free ( Eina_Simple_XML_Node_Tag tag)

Removes tag from parent and deletes it.

Parameters
[in]tagto release memory.

◆ eina_simple_xml_node_data_new()

Eina_Simple_XML_Node_Data* eina_simple_xml_node_data_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new data.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the data will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthSize in bytes of contents.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_data_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

◆ eina_simple_xml_node_data_free()

void eina_simple_xml_node_data_free ( Eina_Simple_XML_Node_Data node)

Removes data from parent and deletes it.

Parameters
[in]nodeto release memory.

◆ eina_simple_xml_node_cdata_new()

Eina_Simple_XML_Node_CData* eina_simple_xml_node_cdata_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new cdata.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the cdata will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthSize in bytes of content.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_cdata_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

◆ eina_simple_xml_node_cdata_free()

void eina_simple_xml_node_cdata_free ( Eina_Simple_XML_Node_Data node)

Removes cdata from parent and deletes it.

Parameters
[in]nodeto release memory.

◆ eina_simple_xml_node_doctype_child_new()

Eina_Simple_XML_Node_Doctype_Child* eina_simple_xml_node_doctype_child_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new doctype child.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the doctype child will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthsize in bytes of content.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_doctype_child_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.
Since
1.8

References EINA_SIMPLE_XML_NODE_DOCTYPE_CHILD.

◆ eina_simple_xml_node_doctype_child_free()

void eina_simple_xml_node_doctype_child_free ( Eina_Simple_XML_Node_Data node)

Removes doctype child from parent and deletes it.

Parameters
[in]nodeto release memory.
Since
1.8

References EINA_SIMPLE_XML_NODE_DOCTYPE_CHILD, and ERR.

◆ eina_simple_xml_node_processing_new()

Eina_Simple_XML_Node_Processing* eina_simple_xml_node_processing_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new processing.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the processing will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthSize in bytes of contents.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_processing_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

◆ eina_simple_xml_node_processing_free()

void eina_simple_xml_node_processing_free ( Eina_Simple_XML_Node_Data node)

Removes processing from parent and deletes it.

Parameters
[in]nodeprocessing to release memory.

◆ eina_simple_xml_node_doctype_new()

Eina_Simple_XML_Node_Doctype* eina_simple_xml_node_doctype_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new doctype.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the doctype will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthSize in bytes of contents.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_doctype_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

◆ eina_simple_xml_node_doctype_free()

void eina_simple_xml_node_doctype_free ( Eina_Simple_XML_Node_Data node)

Removes doctype from parent and deletes it.

Parameters
[in]nodedoctype to release memory.

◆ eina_simple_xml_node_comment_new()

Eina_Simple_XML_Node_Comment* eina_simple_xml_node_comment_new ( Eina_Simple_XML_Node_Tag parent,
const char *  contents,
size_t  length 
)

Creates new comment.

If parent is provided, it is automatically appended.

Parameters
[in,out]parentIf provided, will be set in the resulting structure as well as the comment will be appended to children list.
[in]contentsString to be used. Must not be NULL.
[in]lengthSize in bytes of contents.
Returns
Newly allocated memory or NULL on error. This memory should be released with eina_simple_xml_node_comment_free() or indirectly with eina_simple_xml_node_tag_free() of the parent.

◆ eina_simple_xml_node_comment_free()

void eina_simple_xml_node_comment_free ( Eina_Simple_XML_Node_Data node)

Removes comment from parent and deletes it.

Parameters
[in]nodecomment to release memory.

◆ eina_simple_xml_node_load()

Eina_Simple_XML_Node_Root* eina_simple_xml_node_load ( const char *  buf,
unsigned  buflen,
Eina_Bool  strip 
)

Loads a XML node tree based on the given string.

Parameters
[in]bufThe input string. May not contain \0 terminator.
[in]buflenThe input string size.
[in]stripWhenever this parser should strip leading and trailing whitespace.
Returns
Document root with children tags, or NULL on errors. Document with errors may return partial tree instead of NULL, we'll do our best to avoid returning nothing.

References EINA_MAGIC_SET, and eina_mempool_malloc().

◆ eina_simple_xml_node_root_free()

void eina_simple_xml_node_root_free ( Eina_Simple_XML_Node_Root root)

Frees node tree build with eina_simple_xml_node_load()

Parameters
[in]rootMemory returned by eina_simple_xml_node_load()

◆ eina_simple_xml_node_dump()

char* eina_simple_xml_node_dump ( Eina_Simple_XML_Node node,
const char *  indent 
)

Converts the node tree under the given element to a XML string.

Parameters
[in,out]nodeThe base node to convert.
[in]indentIndentation string, or NULL to disable it.
Returns
NULL on errors, or a newly allocated string on success.

References eina_strbuf_free(), eina_strbuf_new(), and eina_strbuf_string_steal().