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LibXML.xs
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LibXML.xs
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/* $Id$
*
* This is free software, you may use it and distribute it under the same terms as
* Perl itself.
*
* Copyright 2001-2003 AxKit.com Ltd., 2002-2006 Christian Glahn, 2006-2009 Petr Pajas
*/
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_MSC_VER)
#define _CRT_SECURE_NO_DEPRECATE 1
#define _CRT_NONSTDC_NO_DEPRECATE 1
#endif
/* perl stuff */
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define NEED_newRV_noinc_GLOBAL
#define NEED_sv_2pv_flags
#include "ppport.h"
#include "Av_CharPtrPtr.h" /* XS_*_charPtrPtr() */
#include <fcntl.h>
#ifndef WIN32
#include <unistd.h>
#endif
/* libxml2 configuration properties */
#include <libxml/xmlversion.h>
#define DEBUG_C14N
/* libxml2 stuff */
#include <libxml/xmlversion.h>
#include <libxml/globals.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/HTMLparser.h>
#include <libxml/HTMLtree.h>
#include <libxml/c14n.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include <libxml/xmlIO.h>
/* #include <libxml/debugXML.h> */
#include <libxml/xmlerror.h>
#include <libxml/xinclude.h>
#include <libxml/valid.h>
#ifdef LIBXML_PATTERN_ENABLED
#include <libxml/pattern.h>
#endif
#ifdef LIBXML_REGEXP_ENABLED
#include <libxml/xmlregexp.h>
#endif
#if LIBXML_VERSION >= 20510
#define HAVE_SCHEMAS
#include <libxml/relaxng.h>
#include <libxml/xmlschemas.h>
#endif
#if LIBXML_VERSION >= 20621
#define WITH_SERRORS
#ifdef LIBXML_READER_ENABLED
#define HAVE_READER_SUPPORT
#include <libxml/xmlreader.h>
#endif
#endif
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
#ifdef HAVE_READER_SUPPORT
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,
XML_TEXTREADER_VALIDATE_XSD = 4
} xmlTextReaderValidate;
#endif /* HAVE_READER_SUPPORT */
/* GDOME support
* libgdome installs only the core functions to the system.
* this is not enough for XML::LibXML <-> XML::GDOME conversion.
* therefore there is the need to ship as well the GDOME core headers.
*/
#ifdef XML_LIBXML_GDOME_SUPPORT
#include <libgdome/gdome.h>
#include <libgdome/gdome-libxml-util.h>
#endif
#if LIBXML_VERSION < 20621
/* HTML_PARSE_RECOVER was added in libxml2 2.6.21 */
# define HTML_PARSE_RECOVER XML_PARSE_RECOVER
#endif
/* XML::LibXML stuff */
#include "perl-libxml-mm.h"
#include "perl-libxml-sax.h"
#include "dom.h"
#include "xpath.h"
#include "xpathcontext.h"
#ifdef __cplusplus
}
#endif
#define TEST_PERL_FLAG(flag) \
SvTRUE(get_sv(flag, FALSE)) ? 1 : 0
#ifdef HAVE_READER_SUPPORT
#define LIBXML_READER_TEST_ELEMENT(reader,name,nsURI) \
(xmlTextReaderNodeType(reader) == XML_READER_TYPE_ELEMENT) && \
((!nsURI && !name) \
|| \
(!nsURI && xmlStrcmp((const xmlChar*)name, xmlTextReaderConstName(reader) ) == 0 ) \
|| \
(nsURI && xmlStrcmp((const xmlChar*)nsURI, xmlTextReaderConstNamespaceUri(reader))==0 \
&& \
(!name || xmlStrcmp((const xmlChar*)name, xmlTextReaderConstLocalName(reader)) == 0)))
#endif
/* this should keep the default */
static xmlExternalEntityLoader LibXML_old_ext_ent_loader = NULL;
/* global external entity loader */
SV *EXTERNAL_ENTITY_LOADER_FUNC = (SV *)NULL;
SV* PROXY_NODE_REGISTRY_MUTEX = NULL;
/* ****************************************************************
* Error handler
* **************************************************************** */
#ifdef WITH_SERRORS
#define INIT_READER_ERROR_HANDLER(reader)
#define PREINIT_SAVED_ERROR SV* saved_error = sv_2mortal(newSV(0));
#define INIT_ERROR_HANDLER \
xmlSetGenericErrorFunc((void *)saved_error, \
(xmlGenericErrorFunc) LibXML_flat_handler); \
xmlSetStructuredErrorFunc((void *)saved_error, \
(xmlStructuredErrorFunc)LibXML_struct_error_handler)
#define REPORT_ERROR(recover) LibXML_report_error_ctx(saved_error, recover)
#define CLEANUP_ERROR_HANDLER xmlSetGenericErrorFunc(NULL,NULL); \
xmlSetStructuredErrorFunc(NULL,NULL)
#else /* WITH_SERRORS */
#define INIT_READER_ERROR_HANDLER(reader) \
if (reader) \
xmlTextReaderSetErrorHandler(reader, LibXML_reader_error_handler, \
sv_2mortal(newSVpv("",0)));
#define PREINIT_SAVED_ERROR SV* saved_error = sv_2mortal(newSVpv("",0));
#define INIT_ERROR_HANDLER \
xmlSetGenericErrorFunc((void *) saved_error, \
(xmlGenericErrorFunc) LibXML_error_handler_ctx)
#define REPORT_ERROR(recover) LibXML_report_error_ctx(saved_error, recover)
#define CLEANUP_ERROR_HANDLER xmlSetGenericErrorFunc(NULL,NULL);
#endif /* WITH_SERRORS */
#ifdef WITH_SERRORS
void
LibXML_struct_error_callback(SV * saved_error, SV * libErr )
{
dTHX;
dSP;
if ( saved_error == NULL ) {
warn( "have no save_error\n" );
}
ENTER;
SAVETMPS;
PUSHMARK(SP);
XPUSHs(sv_2mortal(libErr));
if ( saved_error != NULL && SvOK(saved_error) ) {
XPUSHs(saved_error);
}
PUTBACK;
if ( saved_error != NULL ) {
call_pv( "XML::LibXML::Error::_callback_error", G_SCALAR | G_EVAL );
} else {
call_pv( "XML::LibXML::Error::_instant_error_callback", G_SCALAR );
}
SPAGAIN;
if ( SvTRUE(ERRSV) ) {
(void) POPs;
croak_obj;
} else {
sv_setsv(saved_error, POPs);
}
PUTBACK;
FREETMPS;
LEAVE;
}
void
LibXML_struct_error_handler(SV * saved_error, xmlErrorPtr error )
{
const char * CLASS = "XML::LibXML::LibError";
SV* libErr;
libErr = NEWSV(0,0);
sv_setref_pv( libErr, CLASS, (void*)error );
LibXML_struct_error_callback( saved_error, libErr);
}
void
LibXML_flat_handler(SV * saved_error, const char * msg, ...)
{
SV* sv;
va_list args;
sv = newSVpv("",0);
va_start(args, msg);
sv_vcatpvf(sv, msg, &args);
va_end(args);
xs_warn("flat error\n");
LibXML_struct_error_callback( saved_error, sv);
}
#endif /* WITH_SERRORS */
/* If threads-support is working correctly in libxml2 then
* this method will be called with the correct thread-context */
void
LibXML_error_handler_ctx(void * ctxt, const char * msg, ...)
{
va_list args;
SV * saved_error = (SV *) ctxt;
/* If saved_error is null we croak with the error */
if( NULL == saved_error ) {
SV * sv = sv_2mortal(newSV(0));
va_start(args, msg);
/* vfprintf(stderr, msg, args); */
sv_vsetpvfn(sv, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
croak("%s", SvPV_nolen(sv));
/* Otherwise, save the error */
} else {
va_start(args, msg);
/* vfprintf(stderr, msg, args); */
sv_vcatpvfn(saved_error, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
}
}
static void
LibXML_validity_error_ctx(void * ctxt, const char *msg, ...)
{
va_list args;
SV * saved_error = (SV *) ctxt;
/* If saved_error is null we croak with the error */
if( NULL == saved_error ) {
SV * sv = sv_2mortal(newSV(0));
va_start(args, msg);
sv_vsetpvfn(sv, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
croak("%s", SvPV_nolen(sv));
/* Otherwise, save the error */
} else {
va_start(args, msg);
sv_vcatpvfn(saved_error, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
}
}
static void
LibXML_validity_warning_ctx(void * ctxt, const char *msg, ...)
{
va_list args;
SV * saved_error = (SV *) ctxt;
STRLEN len;
/* If saved_error is null we croak with the error */
if( NULL == saved_error ) {
SV * sv = sv_2mortal(newSV(0));
va_start(args, msg);
sv_vsetpvfn(sv, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
croak("LibXML_validity_warning_ctx internal error: context was null (%s)", SvPV_nolen(sv));
/* Otherwise, give the warning */
} else {
va_start(args, msg);
sv_vcatpvfn(saved_error, msg, strlen(msg), &args, NULL, 0, NULL);
va_end(args);
warn("validation error: %s", SvPV(saved_error, len));
}
}
static int
LibXML_will_die_ctx(SV * saved_error, int recover)
{
#ifdef WITH_SERRORS
if( saved_error!=NULL && SvOK(saved_error) ) {
if ( recover == 0 ) {
return 1;
}
}
#else
if( 0 < SvCUR( saved_error ) ) {
if ( recover == 0 ) {
return 1;
}
}
#endif
return 0;
}
static void
LibXML_report_error_ctx(SV * saved_error, int recover)
{
#ifdef WITH_SERRORS
if( saved_error!=NULL && SvOK( saved_error ) ) {
if (!recover || recover==1) {
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 1);
PUSHs(saved_error);
PUTBACK;
if (recover==1) {
call_pv( "XML::LibXML::Error::_report_warning", G_SCALAR | G_DISCARD);
} else {
call_pv( "XML::LibXML::Error::_report_error", G_SCALAR | G_DISCARD);
}
SPAGAIN;
PUTBACK;
FREETMPS;
LEAVE;
}
}
#else
if( 0 < SvCUR( saved_error ) ) {
if( recover ) {
if ( recover == 1 ) {
warn("%s", SvPV_nolen(saved_error));
} /* else recover silently */
} else {
croak("%s", SvPV_nolen(saved_error));
}
}
#endif
}
#ifdef HAVE_READER_SUPPORT
#ifndef WITH_SERRORS
static void
LibXML_reader_error_handler(void * ctxt,
const char * msg,
xmlParserSeverities severity,
xmlTextReaderLocatorPtr locator)
{
int line = xmlTextReaderLocatorLineNumber(locator);
xmlChar * filename = xmlTextReaderLocatorBaseURI(locator);
SV * msg_sv = sv_2mortal(C2Sv((xmlChar*) msg,NULL));
SV * error = sv_2mortal(newSVpv("", 0));
switch (severity) {
case XML_PARSER_SEVERITY_VALIDITY_WARNING:
sv_catpv(error, "Validity WARNING");
break;
case XML_PARSER_SEVERITY_WARNING:
sv_catpv(error, "Reader WARNING");
break;
case XML_PARSER_SEVERITY_VALIDITY_ERROR:
sv_catpv(error, "Validity ERROR");
break;
case XML_PARSER_SEVERITY_ERROR:
sv_catpv(error, "Reader ERROR");
break;
}
if (filename) {
sv_catpvf(error, " in %s", filename);
xmlFree(filename);
}
if (line >= 0) {
sv_catpvf(error, " at line %d", line);
}
sv_catpvf(error, ": %s", SvPV_nolen(msg_sv));
if (severity == XML_PARSER_SEVERITY_VALIDITY_WARNING ||
severity == XML_PARSER_SEVERITY_WARNING ) {
warn("%s", SvPV_nolen(error));
} else {
SV * error_sv = (SV*) ctxt;
if (error_sv) {
sv_catpvf(error_sv, "%s ", SvPV_nolen(error));
} else {
croak("%s",SvPV_nolen(error));
}
}
}
#endif /* !defined WITH_SERRORS */
SV *
LibXML_get_reader_error_data(xmlTextReaderPtr reader)
{
SV * saved_error = NULL;
xmlTextReaderErrorFunc f = NULL;
xmlTextReaderGetErrorHandler(reader, &f, (void **) &saved_error);
return saved_error;
}
#ifndef WITH_SERRORS
static void
LibXML_report_reader_error(xmlTextReaderPtr reader)
{
SV * saved_error = NULL;
xmlTextReaderErrorFunc f = NULL;
xmlTextReaderGetErrorHandler(reader, &f, (void **) &saved_error);
if ( saved_error && SvOK( saved_error) && 0 < SvCUR( saved_error ) ) {
croak("%s", SvPV_nolen(saved_error));
}
}
#endif /* !defined WITH_SERRORS */
#endif /* HAVE_READER_SUPPORT */
static int
LibXML_get_recover(HV * real_obj)
{
SV** item = hv_fetch( real_obj, "XML_LIBXML_RECOVER", 18, 0 );
return ( item != NULL && SvTRUE(*item) ) ? SvIV(*item) : 0;
}
static SV *
LibXML_NodeToSv(HV * real_obj, xmlNodePtr real_doc)
{
SV** item = hv_fetch( real_obj, "XML_LIBXML_GDOME", 16, 0 );
if ( item != NULL && SvTRUE(*item) ) {
return PmmNodeToGdomeSv(real_doc);
}
else {
return PmmNodeToSv(real_doc, NULL);
}
}
/* ****************************************************************
* IO callbacks
* **************************************************************** */
int
LibXML_read_perl (SV * ioref, char * buffer, int len)
{
dTHX;
dSP;
int cnt;
SV * read_results;
IV read_results_iv;
STRLEN read_length;
char * chars;
SV * tbuff = NEWSV(0,len);
SV * tsize = newSViv(len);
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 3);
PUSHs(ioref);
PUSHs(sv_2mortal(tbuff));
PUSHs(sv_2mortal(tsize));
PUTBACK;
if (sv_isobject(ioref)) {
cnt = call_method("read", G_SCALAR | G_EVAL);
}
else {
cnt = call_pv("XML::LibXML::__read", G_SCALAR | G_EVAL);
}
SPAGAIN;
if (cnt != 1) {
croak("read method call failed");
}
if (SvTRUE(ERRSV)) {
(void) POPs;
croak_obj;
}
read_results = POPs;
if (!SvOK(read_results)) {
croak("read error");
}
read_results_iv = SvIV(read_results);
chars = SvPV(tbuff, read_length);
/*
* If the file handle uses an encoding layer, the length parameter is
* interpreted as character count, not as byte count. So it's possible
* that more than len bytes are read which would overflow the buffer.
* Check for this condition also by comparing the return value.
*/
if (read_results_iv != read_length || read_length > len) {
croak("Read more bytes than requested. Do you use an encoding-related"
" PerlIO layer?");
}
strncpy(buffer, chars, read_length);
PUTBACK;
FREETMPS;
LEAVE;
return read_length;
}
/* used only by Reader */
int
LibXML_close_perl (SV * ioref)
{
SvREFCNT_dec(ioref);
return 0;
}
int
LibXML_input_match(char const * filename)
{
int results;
int count;
SV * res;
results = 0;
{
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 1);
PUSHs(sv_2mortal(newSVpv((char*)filename, 0)));
PUTBACK;
count = call_pv("XML::LibXML::InputCallback::_callback_match",
G_SCALAR | G_EVAL);
SPAGAIN;
if (count != 1) {
croak("match callback must return a single value");
}
if (SvTRUE(ERRSV)) {
(void) POPs;
croak_obj;
}
res = POPs;
if (SvTRUE(res)) {
results = 1;
}
PUTBACK;
FREETMPS;
LEAVE;
}
return results;
}
void *
LibXML_input_open(char const * filename)
{
SV * results;
int count;
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 1);
PUSHs(sv_2mortal(newSVpv((char*)filename, 0)));
PUTBACK;
count = call_pv("XML::LibXML::InputCallback::_callback_open",
G_SCALAR | G_EVAL);
SPAGAIN;
if (count != 1) {
croak("open callback must return a single value");
}
if (SvTRUE(ERRSV)) {
(void) POPs;
croak_obj;
}
results = POPs;
(void)SvREFCNT_inc(results);
PUTBACK;
FREETMPS;
LEAVE;
return (void *)results;
}
int
LibXML_input_read(void * context, char * buffer, int len)
{
STRLEN res_len;
const char * output;
SV * ctxt;
SV * output_sv;
res_len = 0;
ctxt = (SV *)context;
{
int count;
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 2);
PUSHs(ctxt);
PUSHs(sv_2mortal(newSViv(len)));
PUTBACK;
count = call_pv("XML::LibXML::InputCallback::_callback_read",
G_SCALAR | G_EVAL);
SPAGAIN;
if (count != 1) {
croak("read callback must return a single value");
}
if (SvTRUE(ERRSV)) {
(void) POPs;
croak_obj;
}
/*
* Handle undef()s gracefully, to avoid using POPpx which warns upon $^W
* being set. See t/49callbacks_returning_undef.t and:
* https://rt.cpan.org/Ticket/Display.html?id=70321
* */
output_sv = POPs;
output = SvOK(output_sv) ? SvPV_nolen(output_sv) : NULL;
if (output != NULL) {
res_len = strlen(output);
if (res_len) {
strncpy(buffer, output, res_len);
}
else {
buffer[0] = 0;
}
}
PUTBACK;
FREETMPS;
LEAVE;
}
return res_len;
}
void
LibXML_input_close(void * context)
{
SV * ctxt;
ctxt = (SV *)context;
{
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 1);
PUSHs(ctxt);
PUTBACK;
call_pv("XML::LibXML::InputCallback::_callback_close",
G_SCALAR | G_EVAL | G_DISCARD);
SvREFCNT_dec(ctxt);
if (SvTRUE(ERRSV)) {
croak_obj;
}
FREETMPS;
LEAVE;
}
}
int
LibXML_output_write_handler(void * ioref, char * buffer, int len)
{
if ( buffer != NULL && len > 0) {
dTHX;
dSP;
SV * tbuff = newSVpv(buffer,len);
SV * tsize = newSViv(len);
ENTER;
SAVETMPS;
PUSHMARK(SP);
EXTEND(SP, 3);
PUSHs((SV*)ioref);
PUSHs(sv_2mortal(tbuff));
PUSHs(sv_2mortal(tsize));
PUTBACK;
call_pv("XML::LibXML::__write", G_SCALAR | G_EVAL | G_DISCARD );
if (SvTRUE(ERRSV)) {
croak_obj;
}
FREETMPS;
LEAVE;
}
return len;
}
int
LibXML_output_close_handler( void * handler )
{
return 1;
}
xmlParserInputPtr
LibXML_load_external_entity(
const char * URL,
const char * ID,
xmlParserCtxtPtr ctxt)
{
SV ** func;
int count;
SV * results;
STRLEN results_len;
const char * results_pv;
xmlParserInputBufferPtr input_buf;
if (ctxt->_private == NULL && EXTERNAL_ENTITY_LOADER_FUNC == NULL)
{
return xmlNewInputFromFile(ctxt, URL);
}
if (URL == NULL) {
URL = "";
}
if (ID == NULL) {
ID = "";
}
/* fetch entity loader function */
if(EXTERNAL_ENTITY_LOADER_FUNC != NULL)
{
func = &EXTERNAL_ENTITY_LOADER_FUNC;
}
else
{
SV * self;
HV * real_obj;
self = (SV *)ctxt->_private;
real_obj = (HV *)SvRV(self);
func = hv_fetch(real_obj, "ext_ent_handler", 15, 0);
}
if (func != NULL && SvTRUE(*func)) {
dTHX;
dSP;
ENTER;
SAVETMPS;
PUSHMARK(SP) ;
XPUSHs(sv_2mortal(newSVpv((char*)URL, 0)));
XPUSHs(sv_2mortal(newSVpv((char*)ID, 0)));
PUTBACK;
count = call_sv(*func, G_SCALAR | G_EVAL);
SPAGAIN;
if (count == 0) {
croak("external entity handler did not return a value");
}
if (SvTRUE(ERRSV)) {
(void) POPs;
croak_obj;
}
results = POPs;
results_pv = SvPV(results, results_len);
input_buf = xmlParserInputBufferCreateMem(
results_pv,
results_len,
XML_CHAR_ENCODING_NONE
);
PUTBACK;
FREETMPS;
LEAVE;
return xmlNewIOInputStream(ctxt, input_buf, XML_CHAR_ENCODING_NONE);
}
else {
if (URL == NULL) {
return NULL;
}
return xmlNewInputFromFile(ctxt, URL);
}
}
/* ****************************************************************
* Helper functions
* **************************************************************** */
HV*
LibXML_init_parser( SV * self, xmlParserCtxtPtr ctxt ) {
/* we fetch all switches and callbacks from the hash */
HV* real_obj = NULL;
SV** item = NULL;
int parserOptions = XML_PARSE_NODICT;
/* A NOTE ABOUT xmlInitParser(); */
/* xmlInitParser() should be used only at startup and*/
/* not for initializing a single parser. libxml2's */
/* documentation is quite clear about this. If */
/* something fails it is a problem elsewhere. Simply */
/* resetting the entire module will lead to unwanted */
/* results in server environments, such as if */
/* mod_perl is used together with php's xml module. */
/* calling xmlInitParser() here is definitely wrong! */
/* xmlInitParser(); */
#ifndef WITH_SERRORS
xmlGetWarningsDefaultValue = 0;
#endif
if ( self != NULL ) {
/* first fetch the values from the hash */
real_obj = (HV *)SvRV(self);
item = hv_fetch( real_obj, "XML_LIBXML_PARSER_OPTIONS", 25, 0 );
if (item != NULL && SvOK(*item)) parserOptions = sv_2iv(*item);
/* compatibility with old implementation:
absence of XML_PARSE_DTDLOAD (load_ext_dtd) implies absence of
all DTD related flags
*/
if ((parserOptions & XML_PARSE_DTDLOAD) == 0) {
parserOptions &= ~(XML_PARSE_DTDVALID | XML_PARSE_DTDATTR | XML_PARSE_NOENT );
}
if (ctxt) xmlCtxtUseOptions(ctxt, parserOptions ); /* Note: sets ctxt->linenumbers = 1 */
/*
* Without this if/else conditional, NOBLANKS has no effect.
*
* For more information, see:
*
* https://rt.cpan.org/Ticket/Display.html?id=76696
*
* */
if (parserOptions & XML_PARSE_NOBLANKS) {
xmlKeepBlanksDefault(0);
}
else {
xmlKeepBlanksDefault(1);
}
item = hv_fetch( real_obj, "XML_LIBXML_LINENUMBERS", 22, 0 );
if ( item != NULL && SvTRUE(*item) ) {
if (ctxt) ctxt->linenumbers = 1;
}
else {
if (ctxt) ctxt->linenumbers = 0;
}
if(EXTERNAL_ENTITY_LOADER_FUNC == NULL)
{
item = hv_fetch(real_obj, "ext_ent_handler", 15, 0);
if (item != NULL && SvTRUE(*item)) {
LibXML_old_ext_ent_loader = xmlGetExternalEntityLoader();
xmlSetExternalEntityLoader( (xmlExternalEntityLoader)LibXML_load_external_entity );
}
else
{
if (parserOptions & XML_PARSE_NONET)
{
LibXML_old_ext_ent_loader = xmlGetExternalEntityLoader();
xmlSetExternalEntityLoader( xmlNoNetExternalEntityLoader );
}
/* LibXML_old_ext_ent_loader = NULL; */
}
}
}
return real_obj;
}
void
LibXML_cleanup_parser() {
#ifndef WITH_SERRORS
xmlGetWarningsDefaultValue = 0;
#endif
if (EXTERNAL_ENTITY_LOADER_FUNC == NULL && LibXML_old_ext_ent_loader != NULL)
{
xmlSetExternalEntityLoader( (xmlExternalEntityLoader)LibXML_old_ext_ent_loader );
}
}
int
LibXML_test_node_name( xmlChar * name )
{
xmlChar * cur = name;
int tc = 0;
int len = 0;
if ( cur == NULL || *cur == 0 ) {
/* warn("name is empty" ); */
return(0);
}