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added the close and getattribute methods of XmlTextReader. added the

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* xmlreader.c doc/libxml2-api.xml: added the close and getattribute
  methods of XmlTextReader.
* python/generator.py python/libxml_wrap.h python/types.c
  python/libxml2class.txt: added the reader to the Python bindings
* python/tests/Makefile.am python/tests/reader.py: added a specific
  test for the Python bindings of the Reader APIs
* parser.c: small cleanup.
Daniel
This commit is contained in:
Daniel Veillard
2002-12-14 23:00:35 +00:00
parent 7ef0fcb8a8
commit 0eb38c7259
11 changed files with 394 additions and 5 deletions
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160
xmlreader.c
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@ -53,7 +53,8 @@
typedef enum {
XML_TEXTREADER_MODE_NORMAL = 0,
XML_TEXTREADER_MODE_EOF = 1
XML_TEXTREADER_MODE_EOF = 1,
XML_TEXTREADER_MODE_CLOSED = 1
} xmlTextReaderMode;
typedef enum {
@ -473,6 +474,163 @@ xmlFreeTextReader(xmlTextReaderPtr reader) {
xmlFree(reader);
}
/************************************************************************
* *
* Methods for XmlTextReader *
* *
************************************************************************/
/**
* xmlTextReaderClose:
* @reader: the xmlTextReaderPtr used
*
* This method releases any resources allocated by the current instance
* changes the state to Closed and close any underlying input.
*
* Returns 0 or -1 in case of error
*/
int
xmlTextReaderClose(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
reader->node = NULL;
reader->mode = XML_TEXTREADER_MODE_CLOSED;
if (reader->ctxt != NULL) {
if (reader->ctxt->myDoc != NULL) {
xmlFreeDoc(reader->ctxt->myDoc);
reader->ctxt->myDoc = NULL;
}
if (reader->allocs & XML_TEXTREADER_CTXT) {
xmlFreeParserCtxt(reader->ctxt);
reader->allocs -= XML_TEXTREADER_CTXT;
}
}
if (reader->sax != NULL) {
xmlFree(reader->sax);
reader->sax = NULL;
}
if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT)) {
xmlFreeParserInputBuffer(reader->input);
reader->allocs -= XML_TEXTREADER_INPUT;
}
return(0);
}
/**
* xmlTextReaderGetAttributeNo:
* @reader: the xmlTextReaderPtr used
* @no: the zero-based index of the attribute relative to the containing element
*
* Provides the value of the attribute with the specified index relative
* to the containing element.
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttributeNo(xmlTextReaderPtr reader, int no) {
xmlChar *ret;
int i;
xmlAttrPtr cur;
xmlNsPtr ns;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
ns = reader->node->nsDef;
for (i = 0;(i < no) && (ns != NULL);i++) {
ns = ns->next;
}
if (ns != NULL)
return(xmlStrdup(ns->href));
cur = reader->node->properties;
if (cur == NULL)
return(NULL);
for (;i < no;i++) {
cur = cur->next;
if (cur == NULL)
return(NULL);
}
/* TODO walk the DTD if present */
ret = xmlNodeListGetString(reader->node->doc, cur->children, 1);
if (ret == NULL) return(xmlStrdup((xmlChar *)""));
return(ret);
}
/**
* xmlTextReaderGetAttribute:
* @reader: the xmlTextReaderPtr used
* @name: the qualified name of the attribute.
*
* Provides the value of the attribute with the specified qualified name.
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
xmlChar *prefix = NULL;
xmlChar *localname;
xmlNsPtr ns;
xmlChar *ret = NULL;
if ((reader == NULL) || (name == NULL))
return(NULL);
if (reader->node == NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
localname = xmlSplitQName2(name, &prefix);
if (localname == NULL)
return(xmlGetProp(reader->node, name));
ns = xmlSearchNs(reader->node->doc, reader->node, prefix);
if (ns != NULL)
ret = xmlGetNsProp(reader->node, localname, ns->href);
if (localname != NULL)
xmlFree(localname);
if (prefix != NULL)
xmlFree(prefix);
return(ret);
}
/**
* xmlTextReaderGetAttributeNs:
* @reader: the xmlTextReaderPtr used
* @localName: the local name of the attribute.
* @namespaceURI: the namespace URI of the attribute.
*
* Provides the value of the specified attribute
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttributeNs(xmlTextReaderPtr reader, const xmlChar *localName,
const xmlChar *namespaceURI) {
if ((reader == NULL) || (localName == NULL))
return(NULL);
if (reader->node == NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
return(xmlGetNsProp(reader->node, localName, namespaceURI));
}
/************************************************************************
* *
* Acces API to the current node *