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parser.c
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/*
* parser.c : an XML 1.0 parser, namespaces and validity support are mostly
* implemented on top of the SAX interfaces
*
* References:
* The XML specification:
* http://www.w3.org/TR/REC-xml
* Original 1.0 version:
* http://www.w3.org/TR/1998/REC-xml-19980210
* XML second edition working draft
* http://www.w3.org/TR/2000/WD-xml-2e-20000814
*
* Okay this is a big file, the parser core is around 7000 lines, then it
* is followed by the progressive parser top routines, then the various
* high level APIs to call the parser and a few miscellaneous functions.
* A number of helper functions and deprecated ones have been moved to
* parserInternals.c to reduce this file size.
* As much as possible the functions are associated with their relative
* production in the XML specification. A few productions defining the
* different ranges of character are actually implanted either in
* parserInternals.h or parserInternals.c
* The DOM tree build is realized from the default SAX callbacks in
* the module SAX.c.
* The routines doing the validation checks are in valid.c and called either
* from the SAX callbacks or as standalone functions using a preparsed
* document.
*
* See Copyright for the status of this software.
*
*/
#define IN_LIBXML
#include "libxml.h"
#if defined(WIN32) && !defined (__CYGWIN__)
#define XML_DIR_SEP '\\'
#else
#define XML_DIR_SEP '/'
#endif
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdarg.h>
#include <libxml/xmlmemory.h>
#include <libxml/threads.h>
#include <libxml/globals.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/valid.h>
#include <libxml/entities.h>
#include <libxml/xmlerror.h>
#include <libxml/encoding.h>
#include <libxml/xmlIO.h>
#include <libxml/uri.h>
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
#include <libxml/xmlschemastypes.h>
#include <libxml/relaxng.h>
#endif
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#ifdef HAVE_LZMA_H
#include <lzma.h>
#endif
#include "buf.h"
#include "enc.h"
static void
xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info);
static xmlParserCtxtPtr
xmlCreateEntityParserCtxtInternal(const xmlChar *URL, const xmlChar *ID,
const xmlChar *base, xmlParserCtxtPtr pctx);
static void xmlHaltParser(xmlParserCtxtPtr ctxt);
/************************************************************************
* *
* Arbitrary limits set in the parser. See XML_PARSE_HUGE *
* *
************************************************************************/
#define XML_PARSER_BIG_ENTITY 1000
#define XML_PARSER_LOT_ENTITY 5000
/*
* XML_PARSER_NON_LINEAR is the threshold where the ratio of parsed entity
* replacement over the size in byte of the input indicates that you have
* and eponential behaviour. A value of 10 correspond to at least 3 entity
* replacement per byte of input.
*/
#define XML_PARSER_NON_LINEAR 10
/*
* xmlParserEntityCheck
*
* Function to check non-linear entity expansion behaviour
* This is here to detect and stop exponential linear entity expansion
* This is not a limitation of the parser but a safety
* boundary feature. It can be disabled with the XML_PARSE_HUGE
* parser option.
*/
static int
xmlParserEntityCheck(xmlParserCtxtPtr ctxt, size_t size,
xmlEntityPtr ent, size_t replacement)
{
size_t consumed = 0;
if ((ctxt == NULL) || (ctxt->options & XML_PARSE_HUGE))
return (0);
if (ctxt->lastError.code == XML_ERR_ENTITY_LOOP)
return (1);
/*
* This may look absurd but is needed to detect
* entities problems
*/
if ((ent != NULL) && (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY) &&
(ent->content != NULL) && (ent->checked == 0)) {
unsigned long oldnbent = ctxt->nbentities;
xmlChar *rep;
ent->checked = 1;
rep = xmlStringDecodeEntities(ctxt, ent->content,
XML_SUBSTITUTE_REF, 0, 0, 0);
ent->checked = (ctxt->nbentities - oldnbent + 1) * 2;
if (rep != NULL) {
if (xmlStrchr(rep, '<'))
ent->checked |= 1;
xmlFree(rep);
rep = NULL;
}
}
if (replacement != 0) {
if (replacement < XML_MAX_TEXT_LENGTH)
return(0);
/*
* If the volume of entity copy reaches 10 times the
* amount of parsed data and over the large text threshold
* then that's very likely to be an abuse.
*/
if (ctxt->input != NULL) {
consumed = ctxt->input->consumed +
(ctxt->input->cur - ctxt->input->base);
}
consumed += ctxt->sizeentities;
if (replacement < XML_PARSER_NON_LINEAR * consumed)
return(0);
} else if (size != 0) {
/*
* Do the check based on the replacement size of the entity
*/
if (size < XML_PARSER_BIG_ENTITY)
return(0);
/*
* A limit on the amount of text data reasonably used
*/
if (ctxt->input != NULL) {
consumed = ctxt->input->consumed +
(ctxt->input->cur - ctxt->input->base);
}
consumed += ctxt->sizeentities;
if ((size < XML_PARSER_NON_LINEAR * consumed) &&
(ctxt->nbentities * 3 < XML_PARSER_NON_LINEAR * consumed))
return (0);
} else if (ent != NULL) {
/*
* use the number of parsed entities in the replacement
*/
size = ent->checked / 2;
/*
* The amount of data parsed counting entities size only once
*/
if (ctxt->input != NULL) {
consumed = ctxt->input->consumed +
(ctxt->input->cur - ctxt->input->base);
}
consumed += ctxt->sizeentities;
/*
* Check the density of entities for the amount of data
* knowing an entity reference will take at least 3 bytes
*/
if (size * 3 < consumed * XML_PARSER_NON_LINEAR)
return (0);
} else {
/*
* strange we got no data for checking
*/
if (((ctxt->lastError.code != XML_ERR_UNDECLARED_ENTITY) &&
(ctxt->lastError.code != XML_WAR_UNDECLARED_ENTITY)) ||
(ctxt->nbentities <= 10000))
return (0);
}
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
return (1);
}
/**
* xmlParserMaxDepth:
*
* arbitrary depth limit for the XML documents that we allow to
* process. This is not a limitation of the parser but a safety
* boundary feature. It can be disabled with the XML_PARSE_HUGE
* parser option.
*/
unsigned int xmlParserMaxDepth = 256;
#define SAX2 1
#define XML_PARSER_BIG_BUFFER_SIZE 300
#define XML_PARSER_BUFFER_SIZE 100
#define SAX_COMPAT_MODE BAD_CAST "SAX compatibility mode document"
/**
* XML_PARSER_CHUNK_SIZE
*
* When calling GROW that's the minimal amount of data
* the parser expected to have received. It is not a hard
* limit but an optimization when reading strings like Names
* It is not strictly needed as long as inputs available characters
* are followed by 0, which should be provided by the I/O level
*/
#define XML_PARSER_CHUNK_SIZE 100
/*
* List of XML prefixed PI allowed by W3C specs
*/
static const char *xmlW3CPIs[] = {
"xml-stylesheet",
"xml-model",
NULL
};
/* DEPR void xmlParserHandleReference(xmlParserCtxtPtr ctxt); */
static xmlEntityPtr xmlParseStringPEReference(xmlParserCtxtPtr ctxt,
const xmlChar **str);
static xmlParserErrors
xmlParseExternalEntityPrivate(xmlDocPtr doc, xmlParserCtxtPtr oldctxt,
xmlSAXHandlerPtr sax,
void *user_data, int depth, const xmlChar *URL,
const xmlChar *ID, xmlNodePtr *list);
static int
xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options,
const char *encoding);
#ifdef LIBXML_LEGACY_ENABLED
static void
xmlAddEntityReference(xmlEntityPtr ent, xmlNodePtr firstNode,
xmlNodePtr lastNode);
#endif /* LIBXML_LEGACY_ENABLED */
static xmlParserErrors
xmlParseBalancedChunkMemoryInternal(xmlParserCtxtPtr oldctxt,
const xmlChar *string, void *user_data, xmlNodePtr *lst);
static int
xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity);
/************************************************************************
* *
* Some factorized error routines *
* *
************************************************************************/
/**
* xmlErrAttributeDup:
* @ctxt: an XML parser context
* @prefix: the attribute prefix
* @localname: the attribute localname
*
* Handle a redefinition of attribute error
*/
static void
xmlErrAttributeDup(xmlParserCtxtPtr ctxt, const xmlChar * prefix,
const xmlChar * localname)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = XML_ERR_ATTRIBUTE_REDEFINED;
if (prefix == NULL)
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0,
(const char *) localname, NULL, NULL, 0, 0,
"Attribute %s redefined\n", localname);
else
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
XML_ERR_ATTRIBUTE_REDEFINED, XML_ERR_FATAL, NULL, 0,
(const char *) prefix, (const char *) localname,
NULL, 0, 0, "Attribute %s:%s redefined\n", prefix,
localname);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlFatalErr:
* @ctxt: an XML parser context
* @error: the error number
* @extra: extra information string
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info)
{
const char *errmsg;
char errstr[129] = "";
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
switch (error) {
case XML_ERR_INVALID_HEX_CHARREF:
errmsg = "CharRef: invalid hexadecimal value";
break;
case XML_ERR_INVALID_DEC_CHARREF:
errmsg = "CharRef: invalid decimal value";
break;
case XML_ERR_INVALID_CHARREF:
errmsg = "CharRef: invalid value";
break;
case XML_ERR_INTERNAL_ERROR:
errmsg = "internal error";
break;
case XML_ERR_PEREF_AT_EOF:
errmsg = "PEReference at end of document";
break;
case XML_ERR_PEREF_IN_PROLOG:
errmsg = "PEReference in prolog";
break;
case XML_ERR_PEREF_IN_EPILOG:
errmsg = "PEReference in epilog";
break;
case XML_ERR_PEREF_NO_NAME:
errmsg = "PEReference: no name";
break;
case XML_ERR_PEREF_SEMICOL_MISSING:
errmsg = "PEReference: expecting ';'";
break;
case XML_ERR_ENTITY_LOOP:
errmsg = "Detected an entity reference loop";
break;
case XML_ERR_ENTITY_NOT_STARTED:
errmsg = "EntityValue: \" or ' expected";
break;
case XML_ERR_ENTITY_PE_INTERNAL:
errmsg = "PEReferences forbidden in internal subset";
break;
case XML_ERR_ENTITY_NOT_FINISHED:
errmsg = "EntityValue: \" or ' expected";
break;
case XML_ERR_ATTRIBUTE_NOT_STARTED:
errmsg = "AttValue: \" or ' expected";
break;
case XML_ERR_LT_IN_ATTRIBUTE:
errmsg = "Unescaped '<' not allowed in attributes values";
break;
case XML_ERR_LITERAL_NOT_STARTED:
errmsg = "SystemLiteral \" or ' expected";
break;
case XML_ERR_LITERAL_NOT_FINISHED:
errmsg = "Unfinished System or Public ID \" or ' expected";
break;
case XML_ERR_MISPLACED_CDATA_END:
errmsg = "Sequence ']]>' not allowed in content";
break;
case XML_ERR_URI_REQUIRED:
errmsg = "SYSTEM or PUBLIC, the URI is missing";
break;
case XML_ERR_PUBID_REQUIRED:
errmsg = "PUBLIC, the Public Identifier is missing";
break;
case XML_ERR_HYPHEN_IN_COMMENT:
errmsg = "Comment must not contain '--' (double-hyphen)";
break;
case XML_ERR_PI_NOT_STARTED:
errmsg = "xmlParsePI : no target name";
break;
case XML_ERR_RESERVED_XML_NAME:
errmsg = "Invalid PI name";
break;
case XML_ERR_NOTATION_NOT_STARTED:
errmsg = "NOTATION: Name expected here";
break;
case XML_ERR_NOTATION_NOT_FINISHED:
errmsg = "'>' required to close NOTATION declaration";
break;
case XML_ERR_VALUE_REQUIRED:
errmsg = "Entity value required";
break;
case XML_ERR_URI_FRAGMENT:
errmsg = "Fragment not allowed";
break;
case XML_ERR_ATTLIST_NOT_STARTED:
errmsg = "'(' required to start ATTLIST enumeration";
break;
case XML_ERR_NMTOKEN_REQUIRED:
errmsg = "NmToken expected in ATTLIST enumeration";
break;
case XML_ERR_ATTLIST_NOT_FINISHED:
errmsg = "')' required to finish ATTLIST enumeration";
break;
case XML_ERR_MIXED_NOT_STARTED:
errmsg = "MixedContentDecl : '|' or ')*' expected";
break;
case XML_ERR_PCDATA_REQUIRED:
errmsg = "MixedContentDecl : '#PCDATA' expected";
break;
case XML_ERR_ELEMCONTENT_NOT_STARTED:
errmsg = "ContentDecl : Name or '(' expected";
break;
case XML_ERR_ELEMCONTENT_NOT_FINISHED:
errmsg = "ContentDecl : ',' '|' or ')' expected";
break;
case XML_ERR_PEREF_IN_INT_SUBSET:
errmsg =
"PEReference: forbidden within markup decl in internal subset";
break;
case XML_ERR_GT_REQUIRED:
errmsg = "expected '>'";
break;
case XML_ERR_CONDSEC_INVALID:
errmsg = "XML conditional section '[' expected";
break;
case XML_ERR_EXT_SUBSET_NOT_FINISHED:
errmsg = "Content error in the external subset";
break;
case XML_ERR_CONDSEC_INVALID_KEYWORD:
errmsg =
"conditional section INCLUDE or IGNORE keyword expected";
break;
case XML_ERR_CONDSEC_NOT_FINISHED:
errmsg = "XML conditional section not closed";
break;
case XML_ERR_XMLDECL_NOT_STARTED:
errmsg = "Text declaration '<?xml' required";
break;
case XML_ERR_XMLDECL_NOT_FINISHED:
errmsg = "parsing XML declaration: '?>' expected";
break;
case XML_ERR_EXT_ENTITY_STANDALONE:
errmsg = "external parsed entities cannot be standalone";
break;
case XML_ERR_ENTITYREF_SEMICOL_MISSING:
errmsg = "EntityRef: expecting ';'";
break;
case XML_ERR_DOCTYPE_NOT_FINISHED:
errmsg = "DOCTYPE improperly terminated";
break;
case XML_ERR_LTSLASH_REQUIRED:
errmsg = "EndTag: '</' not found";
break;
case XML_ERR_EQUAL_REQUIRED:
errmsg = "expected '='";
break;
case XML_ERR_STRING_NOT_CLOSED:
errmsg = "String not closed expecting \" or '";
break;
case XML_ERR_STRING_NOT_STARTED:
errmsg = "String not started expecting ' or \"";
break;
case XML_ERR_ENCODING_NAME:
errmsg = "Invalid XML encoding name";
break;
case XML_ERR_STANDALONE_VALUE:
errmsg = "standalone accepts only 'yes' or 'no'";
break;
case XML_ERR_DOCUMENT_EMPTY:
errmsg = "Document is empty";
break;
case XML_ERR_DOCUMENT_END:
errmsg = "Extra content at the end of the document";
break;
case XML_ERR_NOT_WELL_BALANCED:
errmsg = "chunk is not well balanced";
break;
case XML_ERR_EXTRA_CONTENT:
errmsg = "extra content at the end of well balanced chunk";
break;
case XML_ERR_VERSION_MISSING:
errmsg = "Malformed declaration expecting version";
break;
case XML_ERR_NAME_TOO_LONG:
errmsg = "Name too long use XML_PARSE_HUGE option";
break;
#if 0
case:
errmsg = "";
break;
#endif
default:
errmsg = "Unregistered error message";
}
if (info == NULL)
snprintf(errstr, 128, "%s\n", errmsg);
else
snprintf(errstr, 128, "%s: %%s\n", errmsg);
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error,
XML_ERR_FATAL, NULL, 0, info, NULL, NULL, 0, 0, &errstr[0],
info);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlFatalErrMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlFatalErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error,
XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0, "%s", msg);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlWarningMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: extra data
* @str2: extra data
*
* Handle a warning.
*/
static void
xmlWarningMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlStructuredErrorFunc schannel = NULL;
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if ((ctxt != NULL) && (ctxt->sax != NULL) &&
(ctxt->sax->initialized == XML_SAX2_MAGIC))
schannel = ctxt->sax->serror;
if (ctxt != NULL) {
__xmlRaiseError(schannel,
(ctxt->sax) ? ctxt->sax->warning : NULL,
ctxt->userData,
ctxt, NULL, XML_FROM_PARSER, error,
XML_ERR_WARNING, NULL, 0,
(const char *) str1, (const char *) str2, NULL, 0, 0,
msg, (const char *) str1, (const char *) str2);
} else {
__xmlRaiseError(schannel, NULL, NULL,
ctxt, NULL, XML_FROM_PARSER, error,
XML_ERR_WARNING, NULL, 0,
(const char *) str1, (const char *) str2, NULL, 0, 0,
msg, (const char *) str1, (const char *) str2);
}
}
/**
* xmlValidityError:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: extra data
*
* Handle a validity error.
*/
static void
xmlValidityError(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlStructuredErrorFunc schannel = NULL;
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL) {
ctxt->errNo = error;
if ((ctxt->sax != NULL) && (ctxt->sax->initialized == XML_SAX2_MAGIC))
schannel = ctxt->sax->serror;
}
if (ctxt != NULL) {
__xmlRaiseError(schannel,
ctxt->vctxt.error, ctxt->vctxt.userData,
ctxt, NULL, XML_FROM_DTD, error,
XML_ERR_ERROR, NULL, 0, (const char *) str1,
(const char *) str2, NULL, 0, 0,
msg, (const char *) str1, (const char *) str2);
ctxt->valid = 0;
} else {
__xmlRaiseError(schannel, NULL, NULL,
ctxt, NULL, XML_FROM_DTD, error,
XML_ERR_ERROR, NULL, 0, (const char *) str1,
(const char *) str2, NULL, 0, 0,
msg, (const char *) str1, (const char *) str2);
}
}
/**
* xmlFatalErrMsgInt:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: an integer value
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlFatalErrMsgInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, int val)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL,
ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
NULL, 0, NULL, NULL, NULL, val, 0, msg, val);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlFatalErrMsgStrIntStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an string info
* @val: an integer value
* @str2: an string info
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlFatalErrMsgStrIntStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, int val,
const xmlChar *str2)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL,
ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
NULL, 0, (const char *) str1, (const char *) str2,
NULL, val, 0, msg, str1, val, str2);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlFatalErrMsgStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: a string value
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlFatalErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar * val)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL,
XML_FROM_PARSER, error, XML_ERR_FATAL,
NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg,
val);
if (ctxt != NULL) {
ctxt->wellFormed = 0;
if (ctxt->recovery == 0)
ctxt->disableSAX = 1;
}
}
/**
* xmlErrMsgStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: a string value
*
* Handle a non fatal parser error
*/
static void
xmlErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar * val)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL,
XML_FROM_PARSER, error, XML_ERR_ERROR,
NULL, 0, (const char *) val, NULL, NULL, 0, 0, msg,
val);
}
/**
* xmlNsErr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the message
* @info1: extra information string
* @info2: extra information string
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
xmlNsErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg,
const xmlChar * info1, const xmlChar * info2,
const xmlChar * info3)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if (ctxt != NULL)
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error,
XML_ERR_ERROR, NULL, 0, (const char *) info1,
(const char *) info2, (const char *) info3, 0, 0, msg,
info1, info2, info3);
if (ctxt != NULL)
ctxt->nsWellFormed = 0;
}
/**
* xmlNsWarn
* @ctxt: an XML parser context
* @error: the error number
* @msg: the message
* @info1: extra information string
* @info2: extra information string
*
* Handle a namespace warning error
*/
static void
xmlNsWarn(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg,
const xmlChar * info1, const xmlChar * info2,
const xmlChar * info3)
{
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_NAMESPACE, error,
XML_ERR_WARNING, NULL, 0, (const char *) info1,
(const char *) info2, (const char *) info3, 0, 0, msg,
info1, info2, info3);
}
/************************************************************************
* *
* Library wide options *
* *
************************************************************************/
/**
* xmlHasFeature:
* @feature: the feature to be examined
*
* Examines if the library has been compiled with a given feature.
*
* Returns a non-zero value if the feature exist, otherwise zero.
* Returns zero (0) if the feature does not exist or an unknown
* unknown feature is requested, non-zero otherwise.
*/
int
xmlHasFeature(xmlFeature feature)
{
switch (feature) {
case XML_WITH_THREAD:
#ifdef LIBXML_THREAD_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_TREE:
#ifdef LIBXML_TREE_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_OUTPUT:
#ifdef LIBXML_OUTPUT_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_PUSH:
#ifdef LIBXML_PUSH_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_READER:
#ifdef LIBXML_READER_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_PATTERN:
#ifdef LIBXML_PATTERN_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_WRITER:
#ifdef LIBXML_WRITER_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SAX1:
#ifdef LIBXML_SAX1_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_FTP:
#ifdef LIBXML_FTP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_HTTP:
#ifdef LIBXML_HTTP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_VALID:
#ifdef LIBXML_VALID_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_HTML:
#ifdef LIBXML_HTML_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_LEGACY:
#ifdef LIBXML_LEGACY_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_C14N:
#ifdef LIBXML_C14N_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_CATALOG:
#ifdef LIBXML_CATALOG_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XPATH:
#ifdef LIBXML_XPATH_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XPTR:
#ifdef LIBXML_XPTR_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XINCLUDE:
#ifdef LIBXML_XINCLUDE_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_ICONV:
#ifdef LIBXML_ICONV_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_ISO8859X:
#ifdef LIBXML_ISO8859X_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_UNICODE:
#ifdef LIBXML_UNICODE_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_REGEXP:
#ifdef LIBXML_REGEXP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_AUTOMATA:
#ifdef LIBXML_AUTOMATA_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_EXPR:
#ifdef LIBXML_EXPR_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SCHEMAS:
#ifdef LIBXML_SCHEMAS_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SCHEMATRON:
#ifdef LIBXML_SCHEMATRON_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_MODULES:
#ifdef LIBXML_MODULES_ENABLED
return(1);