Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / libxml2 / df101d832da9db9efd59ab194b18ccc5a7274bd1 / . / xmlreader.c
blob: 20ff753059edc2acf371f1cba7cfe1f5c5a39460 [file] [log] [blame]
/*
* xmlreader.c: implements the xmlTextReader streaming node API
*
* NOTE:
* XmlTextReader.Normalization Property won't be supported, since
* it makes the parser non compliant to the XML recommendation
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*/
/*
* TODOs:
* - provide an API to preserve part of the tree
* - Streaming XInclude support
* - validation against a provided DTD
* - XML Schemas validation
* - setting(s) for NoBlanks
* - performances and tuning ...
*/
#define IN_LIBXML
#include "libxml.h"
#include <string.h> /* for memset() only ! */
#include <stdarg.h>
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <libxml/xmlmemory.h>
#include <libxml/xmlIO.h>
#include <libxml/xmlreader.h>
#include <libxml/relaxng.h>
/* #define DEBUG_CALLBACKS */
/* #define DEBUG_READER */
/**
* TODO:
*
* macro to flag unimplemented blocks
*/
#define TODO \
xmlGenericError(xmlGenericErrorContext, \
"Unimplemented block at %s:%d\n", \
__FILE__, __LINE__);
#ifdef DEBUG_READER
#define DUMP_READER xmlTextReaderDebug(reader);
#else
#define DUMP_READER
#endif
#define CHUNK_SIZE 512
/************************************************************************
* *
* The parser: maps the Text Reader API on top of the existing *
* parsing routines building a tree *
* *
************************************************************************/
#define XML_TEXTREADER_INPUT 1
#define XML_TEXTREADER_CTXT 2
typedef enum {
XML_TEXTREADER_MODE_INITIAL = 0,
XML_TEXTREADER_MODE_INTERACTIVE = 1,
XML_TEXTREADER_MODE_ERROR = 2,
XML_TEXTREADER_MODE_EOF =3,
XML_TEXTREADER_MODE_CLOSED = 4,
XML_TEXTREADER_MODE_READING = 5
} xmlTextReaderMode;
typedef enum {
XML_TEXTREADER_NONE = -1,
XML_TEXTREADER_START= 0,
XML_TEXTREADER_ELEMENT= 1,
XML_TEXTREADER_END= 2,
XML_TEXTREADER_EMPTY= 3,
XML_TEXTREADER_BACKTRACK= 4,
XML_TEXTREADER_DONE= 5,
XML_TEXTREADER_ERROR= 6
} xmlTextReaderState;
typedef enum {
XML_TEXTREADER_NOT_VALIDATE = 0,
XML_TEXTREADER_VALIDATE_DTD = 1,
XML_TEXTREADER_VALIDATE_RNG = 2
} xmlTextReaderValidate;
struct _xmlTextReader {
int mode; /* the parsing mode */
xmlTextReaderValidate validate;/* is there any validation */
int allocs; /* what structure were deallocated */
xmlTextReaderState state;
xmlParserCtxtPtr ctxt; /* the parser context */
xmlSAXHandlerPtr sax; /* the parser SAX callbacks */
xmlParserInputBufferPtr input; /* the input */
startElementSAXFunc startElement;/* initial SAX callbacks */
endElementSAXFunc endElement; /* idem */
charactersSAXFunc characters;
cdataBlockSAXFunc cdataBlock;
unsigned int base; /* base of the segment in the input */
unsigned int cur; /* current position in the input */
xmlNodePtr node; /* current node */
xmlNodePtr curnode;/* current attribute node */
int depth; /* depth of the current node */
xmlNodePtr faketext;/* fake xmlNs chld */
/* entity stack when traversing entities content */
xmlNodePtr ent; /* Current Entity Ref Node */
int entNr; /* Depth of the entities stack */
int entMax; /* Max depth of the entities stack */
xmlNodePtr *entTab; /* array of entities */
/* error handling */
xmlTextReaderErrorFunc errorFunc; /* callback function */
void *errorFuncArg; /* callback function user argument */
#ifdef LIBXML_SCHEMAS_ENABLED
/* Handling of RelaxNG validation */
xmlRelaxNGPtr rngSchemas; /* The Relax NG schemas */
xmlRelaxNGValidCtxtPtr rngValidCtxt; /* The Relax NG validation context */
int rngValidErrors; /* The number of errors detected */
xmlNodePtr rngFullNode; /* the node if RNG not progressive */
#endif
};
static const char *xmlTextReaderIsEmpty = "This element is empty";
#ifdef DEBUG_READER
static void
xmlTextReaderDebug(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->ctxt == NULL)) {
fprintf(stderr, "xmlTextReader NULL\n");
return;
}
fprintf(stderr, "xmlTextReader: state %d depth %d ",
reader->state, reader->depth);
if (reader->node == NULL) {
fprintf(stderr, "node = NULL\n");
} else {
fprintf(stderr, "node %s\n", reader->node->name);
}
fprintf(stderr, " input: base %d, cur %d, depth %d: ",
reader->base, reader->cur, reader->ctxt->nodeNr);
if (reader->input->buffer == NULL) {
fprintf(stderr, "buffer is NULL\n");
} else {
#ifdef LIBXML_DEBUG_ENABLED
xmlDebugDumpString(stderr,
&reader->input->buffer->content[reader->cur]);
#endif
fprintf(stderr, "\n");
}
}
#endif
/**
* xmlTextReaderEntPush:
* @reader: the xmlTextReaderPtr used
* @value: the entity reference node
*
* Pushes a new entity reference node on top of the entities stack
*
* Returns 0 in case of error, the index in the stack otherwise
*/
static int
xmlTextReaderEntPush(xmlTextReaderPtr reader, xmlNodePtr value)
{
if (reader->entMax <= 0) {
reader->entMax = 10;
reader->entTab = (xmlNodePtr *) xmlMalloc(reader->entMax *
sizeof(reader->entTab[0]));
if (reader->entTab == NULL) {
xmlGenericError(xmlGenericErrorContext, "xmlMalloc failed !\n");
return (0);
}
}
if (reader->entNr >= reader->entMax) {
reader->entMax *= 2;
reader->entTab =
(xmlNodePtr *) xmlRealloc(reader->entTab,
reader->entMax *
sizeof(reader->entTab[0]));
if (reader->entTab == NULL) {
xmlGenericError(xmlGenericErrorContext, "xmlRealloc failed !\n");
return (0);
}
}
reader->entTab[reader->entNr] = value;
reader->ent = value;
return (reader->entNr++);
}
/**
* xmlTextReaderEntPop:
* @reader: the xmlTextReaderPtr used
*
* Pops the top element entity from the entities stack
*
* Returns the entity just removed
*/
static xmlNodePtr
xmlTextReaderEntPop(xmlTextReaderPtr reader)
{
xmlNodePtr ret;
if (reader->entNr <= 0)
return (0);
reader->entNr--;
if (reader->entNr > 0)
reader->ent = reader->entTab[reader->entNr - 1];
else
reader->ent = NULL;
ret = reader->entTab[reader->entNr];
reader->entTab[reader->entNr] = 0;
return (ret);
}
/**
* xmlTextReaderStartElement:
* @ctx: the user data (XML parser context)
* @fullname: The element name, including namespace prefix
* @atts: An array of name/value attributes pairs, NULL terminated
*
* called when an opening tag has been processed.
*/
static void
xmlTextReaderStartElement(void *ctx, const xmlChar *fullname,
const xmlChar **atts) {
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlParserCtxtPtr origctxt;
xmlTextReaderPtr reader = ctxt->_private;
#ifdef DEBUG_CALLBACKS
printf("xmlTextReaderStartElement(%s)\n", fullname);
#endif
if ((reader != NULL) && (reader->startElement != NULL)) {
/*
* when processing an entity, the context may have been changed
*/
origctxt = reader->ctxt;
reader->startElement(ctx, fullname, atts);
if ((ctxt->node != NULL) && (ctxt->input != NULL) &&
(ctxt->input->cur != NULL) && (ctxt->input->cur[0] == '/') &&
(ctxt->input->cur[1] == '>'))
ctxt->node->_private = (void *) xmlTextReaderIsEmpty;
}
if (reader != NULL)
reader->state = XML_TEXTREADER_ELEMENT;
}
/**
* xmlTextReaderEndElement:
* @ctx: the user data (XML parser context)
* @fullname: The element name, including namespace prefix
*
* called when an ending tag has been processed.
*/
static void
xmlTextReaderEndElement(void *ctx, const xmlChar *fullname) {
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlParserCtxtPtr origctxt;
xmlTextReaderPtr reader = ctxt->_private;
#ifdef DEBUG_CALLBACKS
printf("xmlTextReaderEndElement(%s)\n", fullname);
#endif
if ((reader != NULL) && (reader->endElement != NULL)) {
/*
* when processing an entity, the context may have been changed
*/
origctxt = reader->ctxt;
reader->endElement(ctx, fullname);
}
}
/**
* xmlTextReaderCharacters:
* @ctx: the user data (XML parser context)
* @ch: a xmlChar string
* @len: the number of xmlChar
*
* receiving some chars from the parser.
*/
static void
xmlTextReaderCharacters(void *ctx, const xmlChar *ch, int len)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlParserCtxtPtr origctxt;
xmlTextReaderPtr reader = ctxt->_private;
#ifdef DEBUG_CALLBACKS
printf("xmlTextReaderCharacters()\n");
#endif
if ((reader != NULL) && (reader->characters != NULL)) {
reader->characters(ctx, ch, len);
/*
* when processing an entity, the context may have been changed
*/
origctxt = reader->ctxt;
}
}
/**
* xmlTextReaderCDataBlock:
* @ctx: the user data (XML parser context)
* @value: The pcdata content
* @len: the block length
*
* called when a pcdata block has been parsed
*/
static void
xmlTextReaderCDataBlock(void *ctx, const xmlChar *ch, int len)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
#ifdef DEBUG_CALLBACKS
printf("xmlTextReaderCDataBlock()\n");
#endif
if ((reader != NULL) && (reader->cdataBlock != NULL)) {
reader->cdataBlock(ctx, ch, len);
}
}
/**
* xmlTextReaderPushData:
* @reader: the xmlTextReaderPtr used
*
* Push data down the progressive parser until a significant callback
* got raised.
*
* Returns -1 in case of failure, 0 otherwise
*/
static int
xmlTextReaderPushData(xmlTextReaderPtr reader) {
xmlBufferPtr inbuf;
int val, s;
int oldstate;
if ((reader->input == NULL) || (reader->input->buffer == NULL))
return(-1);
oldstate = reader->state;
reader->state = XML_TEXTREADER_NONE;
inbuf = reader->input->buffer;
while (reader->state == XML_TEXTREADER_NONE) {
if (inbuf->use < reader->cur + CHUNK_SIZE) {
/*
* Refill the buffer unless we are at the end of the stream
*/
if (reader->mode != XML_TEXTREADER_MODE_EOF) {
val = xmlParserInputBufferRead(reader->input, 4096);
if (val <= 0) {
reader->mode = XML_TEXTREADER_MODE_EOF;
reader->state = oldstate;
if ((oldstate != XML_TEXTREADER_START) ||
(reader->ctxt->myDoc != NULL))
return(val);
}
} else
break;
}
/*
* parse by block of CHUNK_SIZE bytes, various tests show that
* it's the best tradeoff at least on a 1.2GH Duron
*/
if (inbuf->use >= reader->cur + CHUNK_SIZE) {
val = xmlParseChunk(reader->ctxt,
(const char *) &inbuf->content[reader->cur],
CHUNK_SIZE, 0);
reader->cur += CHUNK_SIZE;
if (val != 0)
return(-1);
} else {
s = inbuf->use - reader->cur;
val = xmlParseChunk(reader->ctxt,
(const char *) &inbuf->content[reader->cur],
s, 0);
reader->cur += s;
if (val != 0)
return(-1);
break;
}
}
/*
* Discard the consumed input when needed and possible
*/
if (reader->mode == XML_TEXTREADER_MODE_INTERACTIVE) {
if (reader->cur >= 4096) {
val = xmlBufferShrink(inbuf, reader->cur);
if (val >= 0) {
reader->cur -= val;
}
}
}
/*
* At the end of the stream signal that the work is done to the Push
* parser.
*/
else if (reader->mode == XML_TEXTREADER_MODE_EOF) {
if (reader->mode != XML_TEXTREADER_DONE) {
s = inbuf->use - reader->cur;
val = xmlParseChunk(reader->ctxt,
(const char *) &inbuf->content[reader->cur],
s, 1);
reader->cur = inbuf->use;
reader->mode = XML_TEXTREADER_DONE;
if (val != 0) return(-1);
}
}
reader->state = oldstate;
return(0);
}
/**
* xmlTextReaderValidatePush:
* @reader: the xmlTextReaderPtr used
*
* Push the current node for validation
*/
static void
xmlTextReaderValidatePush(xmlTextReaderPtr reader) {
#ifdef LIBXML_REGEXP_ENABLED
xmlNodePtr node = reader->node;
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, node->name);
} else {
/* TODO use the BuildQName interface */
xmlChar *qname;
qname = xmlStrdup(node->ns->prefix);
qname = xmlStrcat(qname, BAD_CAST ":");
qname = xmlStrcat(qname, node->name);
reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, qname);
if (qname != NULL)
xmlFree(qname);
}
#ifdef LIBXML_SCHEMAS_ENABLED
} else if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) return;
ret = xmlRelaxNGValidatePushElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
if (ret == 0) {
/*
* this element requires a full tree
*/
node = xmlTextReaderExpand(reader);
if (node == NULL) {
printf("Expand failed !\n");
ret = -1;
} else {
ret = xmlRelaxNGValidateFullElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
reader->rngFullNode = node;
}
}
if (ret != 1)
reader->rngValidErrors++;
#endif
}
#endif /* LIBXML_REGEXP_ENABLED */
}
/**
* xmlTextReaderValidateCData:
* @reader: the xmlTextReaderPtr used
* @data: pointer to the CData
* @len: lenght of the CData block in bytes.
*
* Push some CData for validation
*/
static void
xmlTextReaderValidateCData(xmlTextReaderPtr reader,
const xmlChar *data, int len) {
#ifdef LIBXML_REGEXP_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
reader->ctxt->valid &= xmlValidatePushCData(&reader->ctxt->vctxt,
data, len);
#ifdef LIBXML_SCHEMAS_ENABLED
} else if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) return;
ret = xmlRelaxNGValidatePushCData(reader->rngValidCtxt, data, len);
if (ret != 1)
reader->rngValidErrors++;
#endif
}
#endif /* LIBXML_REGEXP_ENABLED */
}
/**
* xmlTextReaderValidatePop:
* @reader: the xmlTextReaderPtr used
*
* Pop the current node from validation
*/
static void
xmlTextReaderValidatePop(xmlTextReaderPtr reader) {
#ifdef LIBXML_REGEXP_ENABLED
xmlNodePtr node = reader->node;
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, node->name);
} else {
/* TODO use the BuildQName interface */
xmlChar *qname;
qname = xmlStrdup(node->ns->prefix);
qname = xmlStrcat(qname, BAD_CAST ":");
qname = xmlStrcat(qname, node->name);
reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, qname);
if (qname != NULL)
xmlFree(qname);
}
#ifdef LIBXML_SCHEMAS_ENABLED
} else if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) {
if (node == reader->rngFullNode)
reader->rngFullNode = NULL;
return;
}
ret = xmlRelaxNGValidatePopElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
if (ret != 1)
reader->rngValidErrors++;
#endif
}
#endif /* LIBXML_REGEXP_ENABLED */
}
/**
* xmlTextReaderValidateEntity:
* @reader: the xmlTextReaderPtr used
*
* Handle the validation when an entity reference is encountered and
* entity substitution is not activated. As a result the parser interface
* must walk through the entity and do the validation calls
*/
static void
xmlTextReaderValidateEntity(xmlTextReaderPtr reader) {
#ifdef LIBXML_REGEXP_ENABLED
xmlNodePtr oldnode = reader->node;
xmlNodePtr node = reader->node;
xmlParserCtxtPtr ctxt = reader->ctxt;
do {
if (node->type == XML_ENTITY_REF_NODE) {
/*
* Case where the underlying tree is not availble, lookup the entity
* and walk it.
*/
if ((node->children == NULL) && (ctxt->sax != NULL) &&
(ctxt->sax->getEntity != NULL)) {
node->children = (xmlNodePtr)
ctxt->sax->getEntity(ctxt, node->name);
}
if ((node->children != NULL) &&
(node->children->type == XML_ENTITY_DECL) &&
(node->children->children != NULL)) {
xmlTextReaderEntPush(reader, node);
node = node->children->children;
continue;
} else {
/*
* The error has probably be raised already.
*/
if (node == oldnode)
break;
node = node->next;
}
} else if (node->type == XML_ELEMENT_NODE) {
reader->node = node;
xmlTextReaderValidatePush(reader);
} else if ((node->type == XML_TEXT_NODE) ||
(node->type == XML_CDATA_SECTION_NODE)) {
xmlTextReaderValidateCData(reader, node->content,
xmlStrlen(node->content));
}
/*
* go to next node
*/
if (node->children != NULL) {
node = node->children;
continue;
} else if (node->type == XML_ELEMENT_NODE) {
xmlTextReaderValidatePop(reader);
}
if (node->next != NULL) {
node = node->next;
continue;
}
do {
node = node->parent;
if (node->type == XML_ELEMENT_NODE) {
reader->node = node;
xmlTextReaderValidatePop(reader);
}
if ((node->type == XML_ENTITY_DECL) &&
(reader->ent != NULL) && (reader->ent->children == node)) {
node = xmlTextReaderEntPop(reader);
}
if (node == oldnode)
break;
if (node->next != NULL) {
node = node->next;
break;
}
} while ((node != NULL) && (node != oldnode));
} while ((node != NULL) && (node != oldnode));
reader->node = oldnode;
#endif /* LIBXML_REGEXP_ENABLED */
}
/**
* xmlTextReaderGetSuccessor:
* @cur: the current node
*
* Get the successor of a node if available.
*
* Returns the successor node or NULL
*/
static xmlNodePtr
xmlTextReaderGetSuccessor(xmlNodePtr cur) {
if (cur == NULL) return(NULL) ; /* ERROR */
if (cur->next != NULL) return(cur->next) ;
do {
cur = cur->parent;
if (cur == NULL) return(NULL);
if (cur->next != NULL) return(cur->next);
} while (cur != NULL);
return(cur);
}
/**
* xmlTextReaderDoExpand:
* @reader: the xmlTextReaderPtr used
*
* Makes sure that the current node is fully read as well as all its
* descendant. It means the full DOM subtree must be available at the
* end of the call.
*
* Returns 1 if the node was expanded successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
static int
xmlTextReaderDoExpand(xmlTextReaderPtr reader) {
int val;
if ((reader == NULL) || (reader->node == NULL) || (reader->ctxt == NULL))
return(-1);
do {
if (xmlTextReaderGetSuccessor(reader->node) != NULL)
return(1);
if (reader->ctxt->nodeNr <= reader->depth)
return(1);
if (reader->mode == XML_TEXTREADER_MODE_EOF)
return(1);
val = xmlTextReaderPushData(reader);
if (val < 0)
return(-1);
} while(reader->mode != XML_TEXTREADER_MODE_EOF);
return(1);
}
/**
* xmlTextReaderRead:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the next node in
* the stream, exposing its properties.
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
int
xmlTextReaderRead(xmlTextReaderPtr reader) {
int val, olddepth = 0;
xmlTextReaderState oldstate = 0;
xmlNodePtr oldnode = NULL;
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
if (reader->ctxt->wellFormed != 1)
return(-1);
#ifdef DEBUG_READER
fprintf(stderr, "\nREAD ");
DUMP_READER
#endif
reader->curnode = NULL;
if (reader->mode == XML_TEXTREADER_MODE_INITIAL) {
reader->mode = XML_TEXTREADER_MODE_INTERACTIVE;
/*
* Initial state
*/
do {
val = xmlTextReaderPushData(reader);
if (val < 0)
return(-1);
} while ((reader->ctxt->node == NULL) &&
((reader->mode != XML_TEXTREADER_MODE_EOF) &&
(reader->mode != XML_TEXTREADER_DONE)));
if (reader->ctxt->node == NULL) {
if (reader->ctxt->myDoc != NULL) {
reader->node = reader->ctxt->myDoc->children;
}
if (reader->node == NULL)
return(-1);
reader->state = XML_TEXTREADER_ELEMENT;
} else {
if (reader->ctxt->myDoc != NULL) {
reader->node = reader->ctxt->myDoc->children;
}
if (reader->node == NULL)
reader->node = reader->ctxt->nodeTab[0];
reader->state = XML_TEXTREADER_ELEMENT;
}
reader->depth = 0;
goto node_found;
}
oldstate = reader->state;
olddepth = reader->ctxt->nodeNr;
oldnode = reader->node;
get_next_node:
/*
* If we are not backtracking on ancestors or examined nodes,
* that the parser didn't finished or that we arent at the end
* of stream, continue processing.
*/
while ((reader->node->next == NULL) &&
(reader->ctxt->nodeNr == olddepth) &&
((oldstate == XML_TEXTREADER_BACKTRACK) ||
(reader->node->children == NULL) ||
(reader->node->type == XML_ENTITY_REF_NODE) ||
(reader->node->type == XML_DTD_NODE) ||
(reader->node->type == XML_DOCUMENT_NODE) ||
(reader->node->type == XML_HTML_DOCUMENT_NODE)) &&
((reader->ctxt->node == NULL) ||
(reader->ctxt->node == reader->node) ||
(reader->ctxt->node == reader->node->parent)) &&
(reader->ctxt->instate != XML_PARSER_EOF)) {
val = xmlTextReaderPushData(reader);
if (val < 0)
return(-1);
if (reader->node == NULL)
goto node_end;
}
if (oldstate != XML_TEXTREADER_BACKTRACK) {
if ((reader->node->children != NULL) &&
(reader->node->type != XML_ENTITY_REF_NODE) &&
(reader->node->type != XML_DTD_NODE)) {
reader->node = reader->node->children;
reader->depth++;
reader->state = XML_TEXTREADER_ELEMENT;
goto node_found;
}
}
if (reader->node->next != NULL) {
if ((oldstate == XML_TEXTREADER_ELEMENT) &&
(reader->node->type == XML_ELEMENT_NODE) &&
(reader->node->children == NULL) &&
(reader->node->_private != (void *)xmlTextReaderIsEmpty)) {
reader->state = XML_TEXTREADER_END;
goto node_found;
}
if ((reader->validate) &&
(reader->node->type == XML_ELEMENT_NODE))
xmlTextReaderValidatePop(reader);
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_ELEMENT;
/*
* Cleanup of the old node
*/
if ((reader->node->prev != NULL) &&
(reader->node->prev->type != XML_DTD_NODE)) {
xmlNodePtr tmp = reader->node->prev;
xmlUnlinkNode(tmp);
xmlFreeNode(tmp);
}
goto node_found;
}
if ((oldstate == XML_TEXTREADER_ELEMENT) &&
(reader->node->type == XML_ELEMENT_NODE) &&
(reader->node->children == NULL) &&
(reader->node->_private != (void *)xmlTextReaderIsEmpty)) {
reader->state = XML_TEXTREADER_END;
goto node_found;
}
if ((reader->validate) && (reader->node->type == XML_ELEMENT_NODE))
xmlTextReaderValidatePop(reader);
reader->node = reader->node->parent;
if ((reader->node == NULL) ||
(reader->node->type == XML_DOCUMENT_NODE) ||
#ifdef LIBXML_DOCB_ENABLED
(reader->node->type == XML_DOCB_DOCUMENT_NODE) ||
#endif
(reader->node->type == XML_HTML_DOCUMENT_NODE)) {
if (reader->mode != XML_TEXTREADER_DONE) {
val = xmlParseChunk(reader->ctxt, "", 0, 1);
reader->mode = XML_TEXTREADER_DONE;
}
reader->node = NULL;
reader->depth = -1;
/*
* Cleanup of the old node
*/
if (oldnode->type != XML_DTD_NODE) {
xmlUnlinkNode(oldnode);
xmlFreeNode(oldnode);
}
goto node_end;
}
reader->depth--;
reader->state = XML_TEXTREADER_BACKTRACK;
node_found:
DUMP_READER
/*
* If we are in the middle of a piece of CDATA make sure it's finished
*/
if ((reader->node != NULL) &&
((reader->node->type == XML_TEXT_NODE) ||
(reader->node->type == XML_CDATA_SECTION_NODE))) {
xmlTextReaderExpand(reader);
}
/*
* Handle entities enter and exit when in entity replacement mode
*/
if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_REF_NODE) &&
(reader->ctxt != NULL) && (reader->ctxt->replaceEntities == 1)) {
/*
* Case where the underlying tree is not availble, lookup the entity
* and walk it.
*/
if ((reader->node->children == NULL) && (reader->ctxt->sax != NULL) &&
(reader->ctxt->sax->getEntity != NULL)) {
reader->node->children = (xmlNodePtr)
reader->ctxt->sax->getEntity(reader->ctxt, reader->node->name);
}
if ((reader->node->children != NULL) &&
(reader->node->children->type == XML_ENTITY_DECL) &&
(reader->node->children->children != NULL)) {
xmlTextReaderEntPush(reader, reader->node);
reader->node = reader->node->children->children;
}
} else if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_REF_NODE) &&
(reader->ctxt != NULL) && (reader->validate)) {
xmlTextReaderValidateEntity(reader);
}
if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_DECL) &&
(reader->ent != NULL) && (reader->ent->children == reader->node)) {
reader->node = xmlTextReaderEntPop(reader);
reader->depth++;
goto get_next_node;
}
#ifdef LIBXML_REGEXP_ENABLED
if ((reader->validate) && (reader->node != NULL)) {
xmlNodePtr node = reader->node;
if ((node->type == XML_ELEMENT_NODE) &&
((reader->state != XML_TEXTREADER_END) &&
(reader->state != XML_TEXTREADER_BACKTRACK))) {
xmlTextReaderValidatePush(reader);
} else if ((node->type == XML_TEXT_NODE) ||
(node->type == XML_CDATA_SECTION_NODE)) {
xmlTextReaderValidateCData(reader, node->content,
xmlStrlen(node->content));
}
}
#endif /* LIBXML_REGEXP_ENABLED */
return(1);
node_end:
reader->mode = XML_TEXTREADER_DONE;
return(0);
}
/**
* xmlTextReaderReadState:
* @reader: the xmlTextReaderPtr used
*
* Gets the read state of the reader.
*
* Returns the state value, or -1 in case of error
*/
int
xmlTextReaderReadState(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(reader->mode);
}
/**
* xmlTextReaderExpand:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node and the full subtree. It then makes
* the subtree available until the next xmlTextReaderRead() call
*
* Returns a node pointer valid until the next xmlTextReaderRead() call
* or NULL in case of error.
*/
xmlNodePtr
xmlTextReaderExpand(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->node == NULL) || (reader->ctxt == NULL))
return(NULL);
if (xmlTextReaderDoExpand(reader) < 0)
return(NULL);
return(reader->node);
}
/**
* xmlTextReaderNext:
* @reader: the xmlTextReaderPtr used
*
* Skip to the node following the current one in document order while
* avoiding the subtree if any.
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
int
xmlTextReaderNext(xmlTextReaderPtr reader) {
int ret;
xmlNodePtr cur;
if (reader == NULL)
return(-1);
cur = reader->node;
if ((cur == NULL) || (cur->type != XML_ELEMENT_NODE))
return(xmlTextReaderRead(reader));
if (reader->state == XML_TEXTREADER_END)
return(xmlTextReaderRead(reader));
if (cur->_private == (void *)xmlTextReaderIsEmpty)
return(xmlTextReaderRead(reader));
do {
ret = xmlTextReaderRead(reader);
if (ret != 1)
return(ret);
} while (reader->node != cur);
return(xmlTextReaderRead(reader));
}
/**
* xmlTextReaderReadInnerXml:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node, including child nodes and markup.
*
* Returns a string containing the XML content, or NULL if the current node
* is neither an element nor attribute, or has no child nodes. The
* string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderReadInnerXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED) {
TODO
return(NULL);
}
/**
* xmlTextReaderReadOuterXml:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node, including child nodes and markup.
*
* Returns a string containing the XML content, or NULL if the current node
* is neither an element nor attribute, or has no child nodes. The
* string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderReadOuterXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED) {
TODO
return(NULL);
}
/**
* xmlTextReaderReadString:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of an element or a text node as a string.
*
* Returns a string containing the contents of the Element or Text node,
* or NULL if the reader is positioned on any other type of node.
* The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderReadString(xmlTextReaderPtr reader ATTRIBUTE_UNUSED) {
TODO
return(NULL);
}
/**
* xmlTextReaderReadBase64:
* @reader: the xmlTextReaderPtr used
* @array: a byte array to store the content.
* @offset: the zero-based index into array where the method should
* begin to write.
* @len: the number of bytes to write.
*
* Reads and decodes the Base64 encoded contents of an element and
* stores the result in a byte buffer.
*
* Returns the number of bytes written to array, or zero if the current
* instance is not positioned on an element or -1 in case of error.
*/
int
xmlTextReaderReadBase64(xmlTextReaderPtr reader, unsigned char *array,
int offset, int len) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
if (reader->ctxt->wellFormed != 1)
return(-1);
if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
return(0);
TODO
return(0);
}
/**
* xmlTextReaderReadBinHex:
* @reader: the xmlTextReaderPtr used
* @array: a byte array to store the content.
* @offset: the zero-based index into array where the method should
* begin to write.
* @len: the number of bytes to write.
*
* Reads and decodes the BinHex encoded contents of an element and
* stores the result in a byte buffer.
*
* Returns the number of bytes written to array, or zero if the current
* instance is not positioned on an element or -1 in case of error.
*/
int
xmlTextReaderReadBinHex(xmlTextReaderPtr reader, unsigned char *array,
int offset, int len) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
if (reader->ctxt->wellFormed != 1)
return(-1);
if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
return(0);
TODO
return(0);
}
/************************************************************************
* *
* Constructor and destructors *
* *
************************************************************************/
/**
* xmlNewTextReader:
* @input: the xmlParserInputBufferPtr used to read data
* @URI: the URI information for the source if available
*
* Create an xmlTextReader structure fed with @input
*
* Returns the new xmlTextReaderPtr or NULL in case of error
*/
xmlTextReaderPtr
xmlNewTextReader(xmlParserInputBufferPtr input, const char *URI) {
xmlTextReaderPtr ret;
int val;
if (input == NULL)
return(NULL);
ret = xmlMalloc(sizeof(xmlTextReader));
if (ret == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xmlNewTextReader : malloc failed\n");
return(NULL);
}
memset(ret, 0, sizeof(xmlTextReader));
ret->entTab = NULL;
ret->entMax = 0;
ret->entNr = 0;
ret->input = input;
ret->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
if (ret->sax == NULL) {
xmlFree(ret);
xmlGenericError(xmlGenericErrorContext,
"xmlNewTextReader : malloc failed\n");
return(NULL);
}
memcpy(ret->sax, &xmlDefaultSAXHandler, sizeof(xmlSAXHandler));
ret->startElement = ret->sax->startElement;
ret->sax->startElement = xmlTextReaderStartElement;
ret->endElement = ret->sax->endElement;
ret->sax->endElement = xmlTextReaderEndElement;
ret->characters = ret->sax->characters;
ret->sax->characters = xmlTextReaderCharacters;
ret->cdataBlock = ret->sax->cdataBlock;
ret->sax->cdataBlock = xmlTextReaderCDataBlock;
ret->mode = XML_TEXTREADER_MODE_INITIAL;
ret->node = NULL;
ret->curnode = NULL;
val = xmlParserInputBufferRead(input, 4);
if (val >= 4) {
ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL,
(const char *) ret->input->buffer->content, 4, URI);
ret->base = 0;
ret->cur = 4;
} else {
ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL, NULL, 0, URI);
ret->base = 0;
ret->cur = 0;
}
if (ret->ctxt == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xmlNewTextReader : malloc failed\n");
xmlFree(ret->sax);
xmlFree(ret);
return(NULL);
}
ret->ctxt->_private = ret;
ret->ctxt->linenumbers = 1;
ret->allocs = XML_TEXTREADER_CTXT;
return(ret);
}
/**
* xmlNewTextReaderFilename:
* @URI: the URI of the resource to process
*
* Create an xmlTextReader structure fed with the resource at @URI
*
* Returns the new xmlTextReaderPtr or NULL in case of error
*/
xmlTextReaderPtr
xmlNewTextReaderFilename(const char *URI) {
xmlParserInputBufferPtr input;
xmlTextReaderPtr ret;
char *directory = NULL;
input = xmlParserInputBufferCreateFilename(URI, XML_CHAR_ENCODING_NONE);
if (input == NULL)
return(NULL);
ret = xmlNewTextReader(input, URI);
if (ret == NULL) {
xmlFreeParserInputBuffer(input);
return(NULL);
}
ret->allocs |= XML_TEXTREADER_INPUT;
if (ret->ctxt->directory == NULL)
directory = xmlParserGetDirectory(URI);
if ((ret->ctxt->directory == NULL) && (directory != NULL))
ret->ctxt->directory = (char *) xmlStrdup((xmlChar *) directory);
if (directory != NULL)
xmlFree(directory);
return(ret);
}
/**
* xmlFreeTextReader:
* @reader: the xmlTextReaderPtr
*
* Deallocate all the resources associated to the reader
*/
void
xmlFreeTextReader(xmlTextReaderPtr reader) {
if (reader == NULL)
return;
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
#endif
if (reader->ctxt != NULL) {
if (reader->ctxt->myDoc != NULL) {
xmlFreeDoc(reader->ctxt->myDoc);
reader->ctxt->myDoc = NULL;
}
if ((reader->ctxt->vctxt.vstateTab != NULL) &&
(reader->ctxt->vctxt.vstateMax > 0)){
xmlFree(reader->ctxt->vctxt.vstateTab);
reader->ctxt->vctxt.vstateTab = 0;
reader->ctxt->vctxt.vstateMax = 0;
}
if (reader->allocs & XML_TEXTREADER_CTXT)
xmlFreeParserCtxt(reader->ctxt);
}
if (reader->sax != NULL)
xmlFree(reader->sax);
if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT))
xmlFreeParserInputBuffer(reader->input);
if (reader->faketext != NULL) {
xmlFreeNode(reader->faketext);
}
if (reader->entTab != NULL)
xmlFree(reader->entTab);
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->curnode = 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);
if (reader->curnode != 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);
if (reader->curnode != 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);
if (reader->curnode != NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
return(xmlGetNsProp(reader->node, localName, namespaceURI));
}
/**
* xmlTextReaderGetRemainder:
* @reader: the xmlTextReaderPtr used
*
* Method to get the remainder of the buffered XML. this method stops the
* parser, set its state to End Of File and return the input stream with
* what is left that the parser did not use.
*
* Returns the xmlParserInputBufferPtr attached to the XML or NULL
* in case of error.
*/
xmlParserInputBufferPtr
xmlTextReaderGetRemainder(xmlTextReaderPtr reader) {
xmlParserInputBufferPtr ret = NULL;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
reader->node = NULL;
reader->curnode = NULL;
reader->mode = XML_TEXTREADER_MODE_EOF;
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->allocs & XML_TEXTREADER_INPUT) {
ret = reader->input;
reader->allocs -= XML_TEXTREADER_INPUT;
} else {
/*
* Hum, one may need to duplicate the data structure because
* without reference counting the input may be freed twice:
* - by the layer which allocated it.
* - by the layer to which would have been returned to.
*/
TODO
return(NULL);
}
return(ret);
}
/**
* xmlTextReaderLookupNamespace:
* @reader: the xmlTextReaderPtr used
* @prefix: the prefix whose namespace URI is to be resolved. To return
* the default namespace, specify NULL
*
* Resolves a namespace prefix in the scope of the current element.
*
* Returns a string containing the namespace URI to which the prefix maps
* or NULL in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderLookupNamespace(xmlTextReaderPtr reader, const xmlChar *prefix) {
xmlNsPtr ns;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
ns = xmlSearchNs(reader->node->doc, reader->node, prefix);
if (ns == NULL)
return(NULL);
return(xmlStrdup(ns->href));
}
/**
* xmlTextReaderMoveToAttributeNo:
* @reader: the xmlTextReaderPtr used
* @no: the zero-based index of the attribute relative to the containing
* element.
*
* Moves the position of the current instance to the attribute with
* the specified index relative to the containing element.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader, int no) {
int i;
xmlAttrPtr cur;
xmlNsPtr ns;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(-1);
reader->curnode = NULL;
ns = reader->node->nsDef;
for (i = 0;(i < no) && (ns != NULL);i++) {
ns = ns->next;
}
if (ns != NULL) {
reader->curnode = (xmlNodePtr) ns;
return(1);
}
cur = reader->node->properties;
if (cur == NULL)
return(0);
for (;i < no;i++) {
cur = cur->next;
if (cur == NULL)
return(0);
}
/* TODO walk the DTD if present */
reader->curnode = (xmlNodePtr) cur;
return(1);
}
/**
* xmlTextReaderMoveToAttribute:
* @reader: the xmlTextReaderPtr used
* @name: the qualified name of the attribute.
*
* Moves the position of the current instance to the attribute with
* the specified qualified name.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
xmlChar *prefix = NULL;
xmlChar *localname;
xmlNsPtr ns;
xmlAttrPtr prop;
if ((reader == NULL) || (name == NULL))
return(-1);
if (reader->node == NULL)
return(-1);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
localname = xmlSplitQName2(name, &prefix);
if (localname == NULL) {
/*
* Namespace default decl
*/
if (xmlStrEqual(name, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if (ns->prefix == NULL) {
reader->curnode = (xmlNodePtr) ns;
return(1);
}
ns = ns->next;
}
return(0);
}
prop = reader->node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if ((xmlStrEqual(prop->name, name)) &&
((prop->ns == NULL) || (prop->ns->prefix == NULL))) {
reader->curnode = (xmlNodePtr) prop;
return(1);
}
prop = prop->next;
}
return(0);
}
/*
* Namespace default decl
*/
if (xmlStrEqual(prefix, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localname))) {
reader->curnode = (xmlNodePtr) ns;
goto found;
}
ns = ns->next;
}
goto not_found;
}
prop = reader->node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if ((xmlStrEqual(prop->name, localname)) &&
(prop->ns != NULL) && (xmlStrEqual(prop->ns->prefix, prefix))) {
reader->curnode = (xmlNodePtr) prop;
goto found;
}
prop = prop->next;
}
not_found:
if (localname != NULL)
xmlFree(localname);
if (prefix != NULL)
xmlFree(prefix);
return(0);
found:
if (localname != NULL)
xmlFree(localname);
if (prefix != NULL)
xmlFree(prefix);
return(1);
}
/**
* xmlTextReaderMoveToAttributeNs:
* @reader: the xmlTextReaderPtr used
* @localName: the local name of the attribute.
* @namespaceURI: the namespace URI of the attribute.
*
* Moves the position of the current instance to the attribute with the
* specified local name and namespace URI.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,
const xmlChar *localName, const xmlChar *namespaceURI) {
xmlAttrPtr prop;
xmlNodePtr node;
if ((reader == NULL) || (localName == NULL) || (namespaceURI == NULL))
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
node = reader->node;
/*
* A priori reading http://www.w3.org/TR/REC-xml-names/ there is no
* namespace name associated to "xmlns"
*/
prop = node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if (xmlStrEqual(prop->name, localName) &&
((prop->ns != NULL) &&
(xmlStrEqual(prop->ns->href, namespaceURI)))) {
reader->curnode = (xmlNodePtr) prop;
return(1);
}
prop = prop->next;
}
return(0);
}
/**
* xmlTextReaderMoveToFirstAttribute:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the first attribute
* associated with the current node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->node->nsDef != NULL) {
reader->curnode = (xmlNodePtr) reader->node->nsDef;
return(1);
}
if (reader->node->properties != NULL) {
reader->curnode = (xmlNodePtr) reader->node->properties;
return(1);
}
return(0);
}
/**
* xmlTextReaderMoveToNextAttribute:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the next attribute
* associated with the current node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode == NULL)
return(xmlTextReaderMoveToFirstAttribute(reader));
if (reader->curnode->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) reader->curnode;
if (ns->next != NULL) {
reader->curnode = (xmlNodePtr) ns->next;
return(1);
}
if (reader->node->properties != NULL) {
reader->curnode = (xmlNodePtr) reader->node->properties;
return(1);
}
return(0);
} else if ((reader->curnode->type == XML_ATTRIBUTE_NODE) &&
(reader->curnode->next != NULL)) {
reader->curnode = reader->curnode->next;
return(1);
}
return(0);
}
/**
* xmlTextReaderMoveToElement:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the node that
* contains the current Attribute node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not moved
*/
int
xmlTextReaderMoveToElement(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode != NULL) {
reader->curnode = NULL;
return(1);
}
return(0);
}
/**
* xmlTextReaderReadAttributeValue:
* @reader: the xmlTextReaderPtr used
*
* Parses an attribute value into one or more Text and EntityReference nodes.
*
* Returns 1 in case of success, 0 if the reader was not positionned on an
* ttribute node or all the attribute values have been read, or -1
* in case of error.
*/
int
xmlTextReaderReadAttributeValue(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->curnode == NULL)
return(0);
if (reader->curnode->type == XML_ATTRIBUTE_NODE) {
if (reader->curnode->children == NULL)
return(0);
reader->curnode = reader->curnode->children;
} else if (reader->curnode->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) reader->curnode;
if (reader->faketext == NULL) {
reader->faketext = xmlNewDocText(reader->node->doc,
ns->href);
} else {
if (reader->faketext->content != NULL)
xmlFree(reader->faketext->content);
reader->faketext->content = xmlStrdup(ns->href);
}
reader->curnode = reader->faketext;
} else {
if (reader->curnode->next == NULL)
return(0);
reader->curnode = reader->curnode->next;
}
return(1);
}
/************************************************************************
* *
* Acces API to the current node *
* *
************************************************************************/
/**
* xmlTextReaderAttributeCount:
* @reader: the xmlTextReaderPtr used
*
* Provides the number of attributes of the current node
*
* Returns 0 i no attributes, -1 in case of error or the attribute count
*/
int
xmlTextReaderAttributeCount(xmlTextReaderPtr reader) {
int ret;
xmlAttrPtr attr;
xmlNsPtr ns;
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type != XML_ELEMENT_NODE)
return(0);
if ((reader->state == XML_TEXTREADER_END) ||
(reader->state == XML_TEXTREADER_BACKTRACK))
return(0);
ret = 0;
attr = node->properties;
while (attr != NULL) {
ret++;
attr = attr->next;
}
ns = node->nsDef;
while (ns != NULL) {
ret++;
ns = ns->next;
}
return(ret);
}
/**
* xmlTextReaderNodeType:
* @reader: the xmlTextReaderPtr used
*
* Get the node type of the current node
* Reference:
* http://dotgnu.org/pnetlib-doc/System/Xml/XmlNodeType.html
*
* Returns the xmlNodeType of the current node or -1 in case of error
*/
int
xmlTextReaderNodeType(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ELEMENT_NODE:
if ((reader->state == XML_TEXTREADER_END) ||
(reader->state == XML_TEXTREADER_BACKTRACK))
return(15);
return(1);
case XML_NAMESPACE_DECL:
case XML_ATTRIBUTE_NODE:
return(2);
case XML_TEXT_NODE:
return(3); /* TODO: SignificantWhitespace == 14 Whitespace == 13 */
case XML_CDATA_SECTION_NODE:
return(4);
case XML_ENTITY_REF_NODE:
return(5);
case XML_ENTITY_NODE:
return(6);
case XML_PI_NODE:
return(7);
case XML_COMMENT_NODE:
return(8);
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
#ifdef LIBXML_DOCB_ENABLED
case XML_DOCB_DOCUMENT_NODE:
#endif
return(9);
case XML_DOCUMENT_FRAG_NODE:
return(11);
case XML_NOTATION_NODE:
return(12);
case XML_DOCUMENT_TYPE_NODE:
case XML_DTD_NODE:
return(10);
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
case XML_ENTITY_DECL:
case XML_XINCLUDE_START:
case XML_XINCLUDE_END:
return(0);
}
return(-1);
}
/**
* xmlTextReaderIsEmptyElement:
* @reader: the xmlTextReaderPtr used
*
* Check if the current node is empty
*
* Returns 1 if empty, 0 if not and -1 in case of error
*/
int
xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->node == NULL))
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode != NULL)
return(0);
if (reader->node->children != NULL)
return(0);
if (reader->state == XML_TEXTREADER_END)
return(0);
return(reader->node->_private == (void *)xmlTextReaderIsEmpty);
}
/**
* xmlTextReaderLocalName:
* @reader: the xmlTextReaderPtr used
*
* The local name of the node.
*
* Returns the local name or NULL if not available
*/
xmlChar *
xmlTextReaderLocalName(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(xmlStrdup(BAD_CAST "xmlns"));
else
return(xmlStrdup(ns->prefix));
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(xmlTextReaderName(reader));
return(xmlStrdup(node->name));
}
/**
* xmlTextReaderName:
* @reader: the xmlTextReaderPtr used
*
* The qualified name of the node, equal to Prefix :LocalName.
*
* Returns the local name or NULL if not available
*/
xmlChar *
xmlTextReaderName(xmlTextReaderPtr reader) {
xmlNodePtr node;
xmlChar *ret;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ELEMENT_NODE:
case XML_ATTRIBUTE_NODE:
if ((node->ns == NULL) ||
(node->ns->prefix == NULL))
return(xmlStrdup(node->name));
ret = xmlStrdup(node->ns->prefix);
ret = xmlStrcat(ret, BAD_CAST ":");
ret = xmlStrcat(ret, node->name);
return(ret);
case XML_TEXT_NODE:
return(xmlStrdup(BAD_CAST "#text"));
case XML_CDATA_SECTION_NODE:
return(xmlStrdup(BAD_CAST "#cdata-section"));
case XML_ENTITY_NODE:
case XML_ENTITY_REF_NODE:
return(xmlStrdup(node->name));
case XML_PI_NODE:
return(xmlStrdup(node->name));
case XML_COMMENT_NODE:
return(xmlStrdup(BAD_CAST "#comment"));
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
#ifdef LIBXML_DOCB_ENABLED
case XML_DOCB_DOCUMENT_NODE:
#endif
return(xmlStrdup(BAD_CAST "#document"));
case XML_DOCUMENT_FRAG_NODE:
return(xmlStrdup(BAD_CAST "#document-fragment"));
case XML_NOTATION_NODE:
return(xmlStrdup(node->name));
case XML_DOCUMENT_TYPE_NODE:
case XML_DTD_NODE:
return(xmlStrdup(node->name));
case XML_NAMESPACE_DECL: {
xmlNsPtr ns = (xmlNsPtr) node;
ret = xmlStrdup(BAD_CAST "xmlns");
if (ns->prefix == NULL)
return(ret);
ret = xmlStrcat(ret, BAD_CAST ":");
ret = xmlStrcat(ret, ns->prefix);
return(ret);
}
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
case XML_ENTITY_DECL:
case XML_XINCLUDE_START:
case XML_XINCLUDE_END:
return(NULL);
}
return(NULL);
}
/**
* xmlTextReaderPrefix:
* @reader: the xmlTextReaderPtr used
*
* A shorthand reference to the namespace associated with the node.
*
* Returns the prefix or NULL if not available
*/
xmlChar *
xmlTextReaderPrefix(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(NULL);
return(xmlStrdup(BAD_CAST "xmlns"));
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if ((node->ns != NULL) && (node->ns->prefix != NULL))
return(xmlStrdup(node->ns->prefix));
return(NULL);
}
/**
* xmlTextReaderNamespaceUri:
* @reader: the xmlTextReaderPtr used
*
* The URI defining the namespace associated with the node.
*
* Returns the namespace URI or NULL if not available
*/
xmlChar *
xmlTextReaderNamespaceUri(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL)
return(xmlStrdup(BAD_CAST "http://www.w3.org/2000/xmlns/"));
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if (node->ns != NULL)
return(xmlStrdup(node->ns->href));
return(NULL);
}
/**
* xmlTextReaderBaseUri:
* @reader: the xmlTextReaderPtr used
*
* The base URI of the node.
*
* Returns the base URI or NULL if not available
*/
xmlChar *
xmlTextReaderBaseUri(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
return(xmlNodeGetBase(NULL, reader->node));
}
/**
* xmlTextReaderDepth:
* @reader: the xmlTextReaderPtr used
*
* The depth of the node in the tree.
*
* Returns the depth or -1 in case of error
*/
int
xmlTextReaderDepth(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL) {
if ((reader->curnode->type == XML_ATTRIBUTE_NODE) ||
(reader->curnode->type == XML_NAMESPACE_DECL))
return(reader->depth + 1);
return(reader->depth + 2);
}
return(reader->depth);
}
/**
* xmlTextReaderHasAttributes:
* @reader: the xmlTextReaderPtr used
*
* Whether the node has attributes.
*
* Returns 1 if true, 0 if false, and -1 in case or error
*/
int
xmlTextReaderHasAttributes(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if ((node->type == XML_ELEMENT_NODE) &&
(node->properties != NULL))
return(1);
/* TODO: handle the xmlDecl */
return(0);
}
/**
* xmlTextReaderHasValue:
* @reader: the xmlTextReaderPtr used
*
* Whether the node can have a text value.
*
* Returns 1 if true, 0 if false, and -1 in case or error
*/
int
xmlTextReaderHasValue(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ATTRIBUTE_NODE:
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
case XML_NAMESPACE_DECL:
return(1);
default:
break;
}
return(0);
}
/**
* xmlTextReaderValue:
* @reader: the xmlTextReaderPtr used
*
* Provides the text value of the node if present
*
* Returns the string or NULL if not available. The retsult must be deallocated
* with xmlFree()
*/
xmlChar *
xmlTextReaderValue(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_NAMESPACE_DECL:
return(xmlStrdup(((xmlNsPtr) node)->href));
case XML_ATTRIBUTE_NODE:{
xmlAttrPtr attr = (xmlAttrPtr) node;
if (attr->parent != NULL)
return (xmlNodeListGetString
(attr->parent->doc, attr->children, 1));
else
return (xmlNodeListGetString(NULL, attr->children, 1));
break;
}
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
if (node->content != NULL)
return (xmlStrdup(node->content));
default:
break;
}
return(NULL);
}
/**
* xmlTextReaderIsDefault:
* @reader: the xmlTextReaderPtr used
*
* Whether an Attribute node was generated from the default value
* defined in the DTD or schema.
*
* Returns 0 if not defaulted, 1 if defaulted, and -1 in case of error
*/
int
xmlTextReaderIsDefault(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(0);
}
/**
* xmlTextReaderQuoteChar:
* @reader: the xmlTextReaderPtr used
*
* The quotation mark character used to enclose the value of an attribute.
*
* Returns " or ' and -1 in case of error
*/
int
xmlTextReaderQuoteChar(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
/* TODO maybe lookup the attribute value for " first */
return((int) '"');
}
/**
* xmlTextReaderXmlLang:
* @reader: the xmlTextReaderPtr used
*
* The xml:lang scope within which the node resides.
*
* Returns the xml:lang value or NULL if none exists.
*/
xmlChar *
xmlTextReaderXmlLang(xmlTextReaderPtr reader) {
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
return(xmlNodeGetLang(reader->node));
}
/**
* xmlTextReaderNormalization:
* @reader: the xmlTextReaderPtr used
*
* The value indicating whether to normalize white space and attribute values.
* Since attribute value and end of line normalizations are a MUST in the XML
* specification only the value true is accepted. The broken bahaviour of
* accepting out of range character entities like &#0; is of course not
* supported either.
*
* Returns 1 or -1 in case of error.
*/
int
xmlTextReaderNormalization(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(1);
}
/************************************************************************
* *
* Extensions to the base APIs *
* *
************************************************************************/
/**
* xmlTextReaderSetParserProp:
* @reader: the xmlTextReaderPtr used
* @prop: the xmlParserProperties to set
* @value: usually 0 or 1 to (de)activate it
*
* Change the parser processing behaviour by changing some of its internal
* properties. Note that some properties can only be changed before any
* read has been done.
*
* Returns 0 if the call was successful, or -1 in case of error
*/
int
xmlTextReaderSetParserProp(xmlTextReaderPtr reader, int prop, int value) {
xmlParserProperties p = (xmlParserProperties) prop;
xmlParserCtxtPtr ctxt;
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
ctxt = reader->ctxt;
switch (p) {
case XML_PARSER_LOADDTD:
if (value != 0) {
if (ctxt->loadsubset == 0) {
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
ctxt->loadsubset = XML_DETECT_IDS;
}
} else {
ctxt->loadsubset = 0;
}
return(0);
case XML_PARSER_DEFAULTATTRS:
if (value != 0) {
ctxt->loadsubset |= XML_COMPLETE_ATTRS;
} else {
if (ctxt->loadsubset & XML_COMPLETE_ATTRS)
ctxt->loadsubset -= XML_COMPLETE_ATTRS;
}
return(0);
case XML_PARSER_VALIDATE:
if (value != 0) {
ctxt->validate = 1;
reader->validate = XML_TEXTREADER_VALIDATE_DTD;
} else {
ctxt->validate = 0;
}
return(0);
case XML_PARSER_SUBST_ENTITIES:
if (value != 0) {
ctxt->replaceEntities = 1;
} else {
ctxt->replaceEntities = 0;
}
return(0);
}
return(-1);
}
/**
* xmlTextReaderGetParserProp:
* @reader: the xmlTextReaderPtr used
* @prop: the xmlParserProperties to get
*
* Read the parser internal property.
*
* Returns the value, usually 0 or 1, or -1 in case of error.
*/
int
xmlTextReaderGetParserProp(xmlTextReaderPtr reader, int prop) {
xmlParserProperties p = (xmlParserProperties) prop;
xmlParserCtxtPtr ctxt;
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
ctxt = reader->ctxt;
switch (p) {
case XML_PARSER_LOADDTD:
if ((ctxt->loadsubset != 0) || (ctxt->validate != 0))
return(1);
return(0);
case XML_PARSER_DEFAULTATTRS:
if (ctxt->loadsubset & XML_COMPLETE_ATTRS)
return(1);
return(0);
case XML_PARSER_VALIDATE:
return(reader->validate);
case XML_PARSER_SUBST_ENTITIES:
return(ctxt->replaceEntities);
}
return(-1);
}
/**
* xmlTextReaderCurrentNode:
* @reader: the xmlTextReaderPtr used
*
* Hacking interface allowing to get the xmlNodePtr correponding to the
* current node being accessed by the xmlTextReader. This is dangerous
* because the underlying node may be destroyed on the next Reads.
*
* Returns the xmlNodePtr or NULL in case of error.
*/
xmlNodePtr
xmlTextReaderCurrentNode(xmlTextReaderPtr reader) {
if (reader == NULL)
return(NULL);
if (reader->curnode != NULL)
return(reader->curnode);
return(reader->node);
}
/**
* xmlTextReaderCurrentDoc:
* @reader: the xmlTextReaderPtr used
*
* Hacking interface allowing to get the xmlDocPtr correponding to the
* current document being accessed by the xmlTextReader. This is dangerous
* because the associated node may be destroyed on the next Reads.
*
* Returns the xmlDocPtr or NULL in case of error.
*/
xmlDocPtr
xmlTextReaderCurrentDoc(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(NULL);
return(reader->ctxt->myDoc);
}
#ifdef LIBXML_SCHEMAS_ENABLED
/**
* xmlTextReaderRelaxNGSetSchema:
* @reader: the xmlTextReaderPtr used
* @schema: a precompiled RelaxNG schema
*
* Use RelaxNG to validate the document as it is processed.
* Activation is only possible before the first Read().
* if @schema is NULL, then RelaxNG validation is desactivated.
@ The @schema should not be freed until the reader is deallocated
* or its use has been deactivated.
*
* Returns 0 in case the RelaxNG validation could be (des)activated and
* -1 in case of error.
*/
int
xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader, xmlRelaxNGPtr schema) {
if (schema == NULL) {
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
return(0);
}
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(schema);
if (reader->rngValidCtxt == NULL)
return(-1);
if (reader->errorFunc != NULL) {
xmlRelaxNGSetValidErrors(reader->rngValidCtxt,
(xmlRelaxNGValidityErrorFunc)reader->errorFunc,
(xmlRelaxNGValidityWarningFunc) reader->errorFunc,
reader->errorFuncArg);
}
reader->rngValidErrors = 0;
reader->rngFullNode = NULL;
reader->validate = XML_TEXTREADER_VALIDATE_RNG;
return(0);
}
/**
* xmlTextReaderRelaxNGValidate:
* @reader: the xmlTextReaderPtr used
* @rng: the path to a RelaxNG schema or NULL
*
* Use RelaxNG to validate the document as it is processed.
* Activation is only possible before the first Read().
* if @rng is NULL, then RelaxNG validation is desactivated.
*
* Returns 0 in case the RelaxNG validation could be (des)activated and
* -1 in case of error.
*/
int
xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader, const char *rng) {
xmlRelaxNGParserCtxtPtr ctxt;
if (reader == NULL)
return(-1);
if (rng == NULL) {
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
return(0);
}
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
ctxt = xmlRelaxNGNewParserCtxt(rng);
if (reader->errorFunc != NULL) {
xmlRelaxNGSetParserErrors(ctxt,
(xmlRelaxNGValidityErrorFunc) reader->errorFunc,
(xmlRelaxNGValidityWarningFunc) reader->errorFunc,
reader->errorFuncArg);
}
reader->rngSchemas = xmlRelaxNGParse(ctxt);
xmlRelaxNGFreeParserCtxt(ctxt);
if (reader->rngSchemas == NULL)
return(-1);
reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(reader->rngSchemas);
if (reader->rngValidCtxt == NULL)
return(-1);
if (reader->errorFunc != NULL) {
xmlRelaxNGSetValidErrors(reader->rngValidCtxt,
(xmlRelaxNGValidityErrorFunc)reader->errorFunc,
(xmlRelaxNGValidityWarningFunc) reader->errorFunc,
reader->errorFuncArg);
}
reader->rngValidErrors = 0;
reader->rngFullNode = NULL;
reader->validate = XML_TEXTREADER_VALIDATE_RNG;
return(0);
}
#endif
/************************************************************************
* *
* Error Handling Extensions *
* *
************************************************************************/
/* helper to build a xmlMalloc'ed string from a format and va_list */
static char *
xmlTextReaderBuildMessage(const char *msg, va_list ap) {
int size;
int chars;
char *larger;
char *str;
str = (char *) xmlMallocAtomic(150);
if (str == NULL) {
xmlGenericError(xmlGenericErrorContext, "xmlMalloc failed !\n");
return NULL;
}
size = 150;
while (1) {
chars = vsnprintf(str, size, msg, ap);
if ((chars > -1) && (chars < size))
break;
if (chars > -1)
size += chars + 1;
else
size += 100;
if ((larger = (char *) xmlRealloc(str, size)) == NULL) {
xmlGenericError(xmlGenericErrorContext, "xmlRealloc failed !\n");
xmlFree(str);
return NULL;
}
str = larger;
}
return str;
}
/**
* xmlTextReaderLocatorLineNumber:
* @locator: the xmlTextReaderLocatorPtr used
*
* Obtain the line number for the given locator.
*
* Returns the line number or -1 in case of error.
*/
int
xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator) {
/* we know that locator is a xmlParserCtxtPtr */
xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
int ret = -1;
if (ctx->node != NULL) {
ret = xmlGetLineNo(ctx->node);
}
else {
/* inspired from error.c */
xmlParserInputPtr input;
input = ctx->input;
if ((input->filename == NULL) && (ctx->inputNr > 1))
input = ctx->inputTab[ctx->inputNr - 2];
if (input != NULL) {
ret = input->line;
}
else {
ret = -1;
}
}
return ret;
}
/**
* xmlTextReaderLocatorBaseURI:
* @locator: the xmlTextReaderLocatorPtr used
*
* Obtain the base URI for the given locator.
*
* Returns the base URI or NULL in case of error.
*/
xmlChar *
xmlTextReaderLocatorBaseURI(xmlTextReaderLocatorPtr locator) {
/* we know that locator is a xmlParserCtxtPtr */
xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
xmlChar *ret = NULL;
if (ctx->node != NULL) {
ret = xmlNodeGetBase(NULL,ctx->node);
}
else {
/* inspired from error.c */
xmlParserInputPtr input;
input = ctx->input;
if ((input->filename == NULL) && (ctx->inputNr > 1))
input = ctx->inputTab[ctx->inputNr - 2];
if (input != NULL) {
ret = xmlStrdup(BAD_CAST input->filename);
}
else {
ret = NULL;
}
}
return ret;
}
static void
xmlTextReaderGenericError(void *ctxt, int severity, char *str) {
xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)ctxt;
xmlTextReaderPtr reader = (xmlTextReaderPtr)ctx->_private;
if (str != NULL) {
reader->errorFunc(reader->errorFuncArg,
str,
severity,
(xmlTextReaderLocatorPtr)ctx);
xmlFree(str);
}
}
static void
xmlTextReaderError(void *ctxt, const char *msg, ...) {
va_list ap;
va_start(ap,msg);
xmlTextReaderGenericError(ctxt,
XML_PARSER_SEVERITY_ERROR,
xmlTextReaderBuildMessage(msg,ap));
va_end(ap);
}
static void
xmlTextReaderWarning(void *ctxt, const char *msg, ...) {
va_list ap;
va_start(ap,msg);
xmlTextReaderGenericError(ctxt,
XML_PARSER_SEVERITY_WARNING,
xmlTextReaderBuildMessage(msg,ap));
va_end(ap);
}
static void
xmlTextReaderValidityError(void *ctxt, const char *msg, ...) {
va_list ap;
int len = xmlStrlen((const xmlChar *) msg);
if ((len > 1) && (msg[len - 2] != ':')) {
/*
* some callbacks only report locator information:
* skip them (mimicking behaviour in error.c)
*/
va_start(ap,msg);
xmlTextReaderGenericError(ctxt,
XML_PARSER_SEVERITY_VALIDITY_ERROR,
xmlTextReaderBuildMessage(msg,ap));
va_end(ap);
}
}
static void
xmlTextReaderValidityWarning(void *ctxt, const char *msg, ...) {
va_list ap;
int len = xmlStrlen((const xmlChar *) msg);
if ((len != 0) && (msg[len - 1] != ':')) {
/*
* some callbacks only report locator information:
* skip them (mimicking behaviour in error.c)
*/
va_start(ap,msg);
xmlTextReaderGenericError(ctxt,
XML_PARSER_SEVERITY_VALIDITY_WARNING,
xmlTextReaderBuildMessage(msg,ap));
va_end(ap);
}
}
/**
* xmlTextReaderSetErrorHandler:
* @reader: the xmlTextReaderPtr used
* @f: the callback function to call on error and warnings
* @arg: a user argument to pass to the callback function
*
* Register a callback function that will be called on error and warnings.
*
* If @f is NULL, the default error and warning handlers are restored.
*/
void
xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader,
xmlTextReaderErrorFunc f,
void *arg) {
if (f != NULL) {
reader->ctxt->sax->error = xmlTextReaderError;
reader->ctxt->vctxt.error = xmlTextReaderValidityError;
reader->ctxt->sax->warning = xmlTextReaderWarning;
reader->ctxt->vctxt.warning = xmlTextReaderValidityWarning;
reader->errorFunc = f;
reader->errorFuncArg = arg;
}
else {
/* restore defaults */
reader->ctxt->sax->error = xmlParserError;
reader->ctxt->vctxt.error = xmlParserValidityError;
reader->ctxt->sax->warning = xmlParserWarning;
reader->ctxt->vctxt.warning = xmlParserValidityWarning;
reader->errorFunc = NULL;
reader->errorFuncArg = NULL;
}
}
/**
* xmlTextReaderIsValid:
* @reader: the xmlTextReaderPtr used
*
* Retrieve the validity status from the parser context
*
* Returns the flag value 1 if valid, 0 if no, and -1 in case of error
*/
int
xmlTextReaderIsValid(xmlTextReaderPtr reader) {
if (reader == NULL) return(-1);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->validate == XML_TEXTREADER_VALIDATE_RNG)
return(reader->rngValidErrors == 0);
#endif
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL))
return(reader->ctxt->valid);
return(0);
}
/**
* xmlTextReaderGetErrorHandler:
* @reader: the xmlTextReaderPtr used
* @f: the callback function or NULL is no callback has been registered
* @arg: a user argument
*
* Retrieve the error callback function and user argument.
*/
void
xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader,
xmlTextReaderErrorFunc *f,
void **arg) {
*f = reader->errorFunc;
*arg = reader->errorFuncArg;
}
/************************************************************************
* *
* Utilities *
* *
************************************************************************/
/**
* xmlBase64Decode:
* @in: the input buffer
* @inlen: the size of the input (in), the size read from it (out)
* @to: the output buffer
* @tolen: the size of the output (in), the size written to (out)
*
* Base64 decoder, reads from @in and save in @to
* TODO: tell jody when this is actually exported
*
* Returns 0 if all the input was consumer, 1 if the Base64 end was reached,
* 2 if there wasn't enough space on the output or -1 in case of error.
*/
static int
xmlBase64Decode(const unsigned char *in, unsigned long *inlen,
unsigned char *to, unsigned long *tolen) {
unsigned long incur; /* current index in in[] */
unsigned long inblk; /* last block index in in[] */
unsigned long outcur; /* current index in out[] */
unsigned long inmax; /* size of in[] */
unsigned long outmax; /* size of out[] */
unsigned char cur; /* the current value read from in[] */
unsigned char intmp[3], outtmp[4]; /* temporary buffers for the convert */
int nbintmp; /* number of byte in intmp[] */
int is_ignore; /* cur should be ignored */
int is_end = 0; /* the end of the base64 was found */
int retval = 1;
int i;
if ((in == NULL) || (inlen == NULL) || (to == NULL) || (tolen == NULL))
return(-1);
incur = 0;
inblk = 0;
outcur = 0;
inmax = *inlen;
outmax = *tolen;
nbintmp = 0;
while (1) {
if (incur >= inmax)
break;
cur = in[incur++];
is_ignore = 0;
if ((cur >= 'A') && (cur <= 'Z'))
cur = cur - 'A';
else if ((cur >= 'a') && (cur <= 'z'))
cur = cur - 'a' + 26;
else if ((cur >= '0') && (cur <= '9'))
cur = cur - '0' + 52;
else if (cur == '+')
cur = 62;
else if (cur == '/')
cur = 63;
else if (cur == '.')
cur = 0;
else if (cur == '=') /*no op , end of the base64 stream */
is_end = 1;
else {
is_ignore = 1;
if (nbintmp == 0)
inblk = incur;
}
if (!is_ignore) {
int nbouttmp = 3;
int is_break = 0;
if (is_end) {
if (nbintmp == 0)
break;
if ((nbintmp == 1) || (nbintmp == 2))
nbouttmp = 1;
else
nbouttmp = 2;
nbintmp = 3;
is_break = 1;
}
intmp[nbintmp++] = cur;
/*
* if intmp is full, push the 4byte sequence as a 3 byte
* sequence out
*/
if (nbintmp == 4) {
nbintmp = 0;
outtmp[0] = (intmp[0] << 2) | ((intmp[1] & 0x30) >> 4);
outtmp[1] =
((intmp[1] & 0x0F) << 4) | ((intmp[2] & 0x3C) >> 2);
outtmp[2] = ((intmp[2] & 0x03) << 6) | (intmp[3] & 0x3F);
if (outcur + 3 >= outmax) {
retval = 2;
break;
}
for (i = 0; i < nbouttmp; i++)
to[outcur++] = outtmp[i];
inblk = incur;
}
if (is_break) {
retval = 0;
break;
}
}
}
*tolen = outcur;
*inlen = inblk;
return (retval);
}
/*
* Test routine for the xmlBase64Decode function
*/
#if 0
int main(int argc, char **argv) {
char *input = " VW4 gcGV0 \n aXQgdGVzdCAuCg== ";
char output[100];
char output2[100];
char output3[100];
unsigned long inlen = strlen(input);
unsigned long outlen = 100;
int ret;
unsigned long cons, tmp, tmp2, prod;
/*
* Direct
*/
ret = xmlBase64Decode(input, &inlen, output, &outlen);
output[outlen] = 0;
printf("ret: %d, inlen: %ld , outlen: %ld, output: '%s'\n", ret, inlen, outlen, output);
/*
* output chunking
*/
cons = 0;
prod = 0;
while (cons < inlen) {
tmp = 5;
tmp2 = inlen - cons;
printf("%ld %ld\n", cons, prod);
ret = xmlBase64Decode(&input[cons], &tmp2, &output2[prod], &tmp);
cons += tmp2;
prod += tmp;
printf("%ld %ld\n", cons, prod);
}
output2[outlen] = 0;
printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons, prod, output2);
/*
* input chunking
*/
cons = 0;
prod = 0;
while (cons < inlen) {
tmp = 100 - prod;
tmp2 = inlen - cons;
if (tmp2 > 5)
tmp2 = 5;
printf("%ld %ld\n", cons, prod);
ret = xmlBase64Decode(&input[cons], &tmp2, &output3[prod], &tmp);
cons += tmp2;
prod += tmp;
printf("%ld %ld\n", cons, prod);
}
output3[outlen] = 0;
printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons, prod, output3);
return(0);
}
#endif