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Diffstat (limited to 'sdo-cpp/trunk/runtime/core/src/commonj/sdo/SAX2Parser.cpp')
| -rw-r--r-- | sdo-cpp/trunk/runtime/core/src/commonj/sdo/SAX2Parser.cpp | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/sdo-cpp/trunk/runtime/core/src/commonj/sdo/SAX2Parser.cpp b/sdo-cpp/trunk/runtime/core/src/commonj/sdo/SAX2Parser.cpp new file mode 100644 index 0000000000..bd6ddf6d99 --- /dev/null +++ b/sdo-cpp/trunk/runtime/core/src/commonj/sdo/SAX2Parser.cpp @@ -0,0 +1,539 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/* $Rev$ $Date$ */ + +#include "commonj/sdo/SAX2Parser.h" +#include "libxml/SAX2.h" +#include "commonj/sdo/SDORuntimeException.h" +#include "commonj/sdo/SDOUtils.h" + +using namespace commonj::sdo; +using internal::SDOUtils; + +/** + * SAX2Parser holds the methods which will be called back. + * The implementation uses libxml, which provides callbacks for + * errors, warnings , elements etc. These methods correspond to thos + * callbacks. + * Callbacks from libxml to these C methods are converted into calls + * to the C++ equivalent (with some parameter manipulation + * In the callback methods the void* ctx is a pointer to 'this' SAX2Parser + */ + + + +int sdo_isStandalone(void *ctx) +{ + return 0; +} + + +int sdo_hasInternalSubset(void *ctx) +{ + return(0); +} + +int sdo_hasExternalSubset(void *ctx) +{ + return(0); +} + +void sdo_internalSubset(void *ctx, const xmlChar *name, + const xmlChar *ExternalID, const xmlChar *SystemID) +{ +} + + +void sdo_externalSubset(void *ctx, const xmlChar *name, + const xmlChar *ExternalID, const xmlChar *SystemID) +{ +} + +xmlParserInputPtr sdo_resolveEntity(void *ctx, const xmlChar *publicId, const xmlChar *systemId) +{ + return(NULL); +} + + +xmlEntityPtr sdo_getEntity(void *ctx, const xmlChar *name) +{ + return(NULL); +} + + +xmlEntityPtr sdo_getParameterEntity(void *ctx, const xmlChar *name) +{ + return(NULL); +} + + +void sdo_entityDecl(void *ctx, const xmlChar *name, int type, + const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) +{ +} + + +void sdo_attributeDecl(void *ctx, const xmlChar * elem, + const xmlChar * name, int type, int def, + const xmlChar * defaultValue, xmlEnumerationPtr tree) +{ +} + +void sdo_elementDecl(void *ctx, const xmlChar *name, int type, + xmlElementContentPtr content) +{ +} + + +void sdo_notationDecl(void *ctx, const xmlChar *name, + const xmlChar *publicId, const xmlChar *systemId) +{ +} + +void sdo_unparsedEntityDecl(void *ctx, const xmlChar *name, + const xmlChar *publicId, const xmlChar *systemId, + const xmlChar *notationName) +{ +} + + +void sdo_setDocumentLocator(void *ctx, xmlSAXLocatorPtr loc) +{ +} + + +void sdo_startDocument(void *ctx) +{ + if (!((SAX2Parser*)ctx)->parserError) + ((SAX2Parser*)ctx)->startDocument(); +} + + +void sdo_endDocument(void *ctx) +{ + if (!((SAX2Parser*)ctx)->parserError) + ((SAX2Parser*)ctx)->endDocument(); +} + + +void sdo_startElement(void *ctx, const xmlChar *name, const xmlChar **atts) +{ + // ((SAX2Parser*)ctx)->startElement(name, atts); +} + + +void sdo_endElement(void *ctx, const xmlChar *name) +{ + // ((SAX2Parser*)ctx)->endElement(name); +} + + +void sdo_characters(void *ctx, const xmlChar *ch, int len) +{ + if (!((SAX2Parser*)ctx)->parserError) + ((SAX2Parser*)ctx)->characters(SDOXMLString(ch, 0, len)); +} + + +void sdo_reference(void *ctx, const xmlChar *name) +{ +} + + +void sdo_ignorableWhitespace(void *ctx, const xmlChar *ch, int len) +{ +} + + +void sdo_processingInstruction(void *ctx, const xmlChar *target, + const xmlChar *data) +{ +} + + +void sdo_cdataBlock(void *ctx, const xmlChar *value, int len) +{ + if (!((SAX2Parser*)ctx)->parserError) + { + SDOXMLString valueAsString(value, 0, len); + + SDOXMLString cdata(SDOUtils::CDataStartMarker); + cdata = cdata + valueAsString; + cdata = cdata + SDOUtils::CDataEndMarker; + + ((SAX2Parser*)ctx)->characters(cdata); + } +} + +void sdo_comment(void *ctx, const xmlChar *value) +{ +} + + +void sdo_warning(void *ctx, const char *msg, ...) +{ + va_list args; + va_start(args, msg); + ((SAX2Parser*)ctx)->warning(msg, args); + va_end(args); +} + +void sdo_error(void *ctx, const char *msg, ...) +{ + va_list args; + va_start(args, msg); + ((SAX2Parser*)ctx)->error(msg, args); + va_end(args); + + +} + +void sdo_fatalError(void *ctx, const char *msg, ...) +{ + va_list args; + va_start(args, msg); + ((SAX2Parser*)ctx)->fatalError(msg, args); + va_end(args); +} + + + +// =============== +// SAX2 callbacks +// =============== +void sdo_startElementNs(void *ctx, + const xmlChar *localname, + const xmlChar *prefix, + const xmlChar *URI, + int nb_namespaces, + const xmlChar **namespaces, + int nb_attributes, + int nb_defaulted, + const xmlChar **attributes) +{ + if (!((SAX2Parser*)ctx)->parserError) + ((SAX2Parser*)ctx)->startElementNs( + localname, + prefix, + URI, + SAX2Namespaces(nb_namespaces, namespaces), + SAX2Attributes(nb_attributes, nb_defaulted, attributes)); +} + + +void sdo_endElementNs(void *ctx, + const xmlChar *localname, + const xmlChar *prefix, + const xmlChar *URI) +{ + if (!((SAX2Parser*)ctx)->parserError) + ((SAX2Parser*)ctx)->endElementNs(localname, prefix, URI); +} + + +// The callback method structure +xmlSAXHandler SDOSAX2HandlerStruct = { + sdo_internalSubset, + sdo_isStandalone, + sdo_hasInternalSubset, + sdo_hasExternalSubset, + sdo_resolveEntity, + sdo_getEntity, + sdo_entityDecl, + sdo_notationDecl, + sdo_attributeDecl, + sdo_elementDecl, + sdo_unparsedEntityDecl, + sdo_setDocumentLocator, + sdo_startDocument, + sdo_endDocument, + sdo_startElement, + sdo_endElement, + sdo_reference, + sdo_characters, + sdo_ignorableWhitespace, + sdo_processingInstruction, + sdo_comment, + sdo_warning, + sdo_error, + sdo_fatalError, + sdo_getParameterEntity, + sdo_cdataBlock, + sdo_externalSubset, + XML_SAX2_MAGIC, + NULL, + sdo_startElementNs, + sdo_endElementNs, + NULL +}; + + +namespace commonj +{ + namespace sdo + { + + + + + SAX2Parser::SAX2Parser() + { + setter = 0; + parserError = false; + currentFile = 0; + } + + SAX2Parser::SAX2Parser(ParserErrorSetter* insetter) + { + setter = insetter; + parserError = false; + currentFile = 0; + } + + SAX2Parser::~SAX2Parser() + { + // xmlCleanupParser(); + if (currentFile != 0) + { + delete[] currentFile; + } + } + + const char* SAX2Parser::getCurrentFile() const + { + return currentFile; + } + + + void SAX2Parser::setCurrentFile(const char* filename) + { + if (currentFile != 0) + { + delete[] currentFile; + } + currentFile = new char[strlen(filename)+1]; + strcpy(currentFile,filename); + } + + int SAX2Parser::parse(const char* filename) + { + + parserError = false; + xmlSAXHandlerPtr handler = &SDOSAX2HandlerStruct; + + if (currentFile != 0) + { + delete[] currentFile; + } + currentFile = new char[strlen(filename)+1]; + strcpy(currentFile,filename); + + + int rc = xmlSAXUserParseFile(handler, this, filename); + if (rc == -1) + { + sdo_error(this, "xmlSAXUserParseFile returned an error %d", rc); + throw SDOFileNotFoundException(TUSCANY_SDO_EINFO, + messageBuffer); + } + return rc; + } + + void SAX2Parser::startDocument() + { + } + + void SAX2Parser::endDocument() + { + } + + void SAX2Parser::startElementNs( + const SDOXMLString& localname, + const SDOXMLString& prefix, + const SDOXMLString& URI, + const SAX2Namespaces& namespaces, + const SAX2Attributes& attributes) + { + } + + void SAX2Parser::endElementNs( + const SDOXMLString& localname, + const SDOXMLString& prefix, + const SDOXMLString& URI) + { + } + + void SAX2Parser::characters(const SDOXMLString& chars) + { + } + + + void SAX2Parser::warning(const char* msg, va_list args) + { + // warnings are perhaps too frequent + // vsprintf(messageBuffer, msg, args); + // if (setter != 0)setter->setError(messageBuffer); + } + + void SAX2Parser::fatalError(const char* msg, va_list args) + { + parserError = true; + vsprintf(messageBuffer, msg, args); + if (setter != 0)setter->setError(messageBuffer); + } + + void SAX2Parser::error(const char* msg, va_list args) + { + vsprintf(messageBuffer, msg, args); + if (setter != 0)setter->setError(messageBuffer); + } + + + void SAX2Parser::stream(std::istream& input) + { + char buffer[100]; + xmlSAXHandlerPtr handler = &SDOSAX2HandlerStruct; + parserError = false; + xmlParserCtxtPtr ctxt; + + input.read(buffer,4); + ctxt = xmlCreatePushParserCtxt(handler, this, + buffer, input.gcount(), NULL); + + while (input.read(buffer,100)) + { + xmlParseChunk(ctxt, buffer, input.gcount(), 0); + + } + + xmlParseChunk(ctxt, buffer, input.gcount(), 1); + xmlFreeParserCtxt(ctxt); + + if (parserError) + { + throw SDOXMLParserException(TUSCANY_SDO_EINFO, + messageBuffer); + } + + } + + int SAX2Parser::parse_twice(const char* filename) + { + parserError = false; + xmlSAXHandlerPtr handler = &SDOSAX2HandlerStruct; + + setCurrentFile(filename); + + int rc = xmlSAXUserParseFile(handler, this, filename); + if (rc == -1) + { + sdo_error(this, "xmlSAXUserParseFile returned an error %d", rc); + throw SDOFileNotFoundException(TUSCANY_SDO_EINFO, + messageBuffer); + } + + // parse twice - first was for groups + + if (setter)setter->clearErrors(); + + rc = xmlSAXUserParseFile(handler, this, filename); + if (rc == -1) + { + sdo_error(this, "xmlSAXUserParseFile returned an error %d", rc); + throw SDOFileNotFoundException(TUSCANY_SDO_EINFO, + messageBuffer); + } + return rc; + } + + void SAX2Parser::stream_twice(std::istream& input) + { + + std::vector<parse_buf_element> buffer_vec; + int count = 0; + parserError = false; + + xmlSAXHandlerPtr handler = &SDOSAX2HandlerStruct; + xmlParserCtxtPtr ctxt; + + char bctx[5]; + input.read(bctx,4); + int bcount = input.gcount(); + + + ctxt = xmlCreatePushParserCtxt(handler, this, + bctx, bcount, NULL); + + buffer_vec.push_back(parse_buf_element()); + + while (input.read(buffer_vec[count].buf,1000)) + { + buffer_vec[count].len = input.gcount(); + xmlParseChunk(ctxt, buffer_vec[count].buf, + buffer_vec[count].len, 0); + buffer_vec.push_back(parse_buf_element()); + count++; + + } + + buffer_vec[count].len = input.gcount(); + xmlParseChunk(ctxt, buffer_vec[count].buf, + buffer_vec[count].len, 1); + xmlFreeParserCtxt(ctxt); + + if (parserError) + { + throw SDOXMLParserException(TUSCANY_SDO_EINFO, + messageBuffer); + } + + if (setter)setter->clearErrors(); + + ctxt = xmlCreatePushParserCtxt(handler, this, + bctx, bcount, NULL); + + for (unsigned int i=0;i<buffer_vec.size();i++) + { + if (buffer_vec[i].len > 0) + { + xmlParseChunk(ctxt, buffer_vec[i].buf, + buffer_vec[i].len, 0); + } + } + + if (parserError) + { + throw SDOXMLParserException(TUSCANY_SDO_EINFO, + messageBuffer); + } + + } + + + std::istream& operator>>(std::istream& input, SAX2Parser& parser) + { + parser.stream(input); + return input; + } + + + } // End - namespace sdo +} // End - namespace commonj + |