--- parser3/src/classes/xnode.C 2001/10/16 14:44:40 1.8 +++ parser3/src/classes/xnode.C 2002/01/11 12:24:27 1.22 @@ -2,25 +2,93 @@ Parser: @b dom parser class. Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) + Author: Alexander Petrosyan (http://paf.design.ru) - $Id: xnode.C,v 1.8 2001/10/16 14:44:40 parser Exp $ + $Id: xnode.C,v 1.22 2002/01/11 12:24:27 paf Exp $ */ #include "classes.h" #ifdef XML +#include "pa_charset.h" #include "pa_request.h" #include "pa_vxnode.h" #include "xnode.h" -#include -#include -#include -#include -#include -#include -#include +extern "C" { +#include "gdomecore/gdome-xml-node.h" +}; +#include "gdomecore/gdome-xml-document.h" +#include "gdome.h" +#include "libxml/xpath.h" + +// classes + +class xmlXPathObject_auto_ptr { +public: + explicit xmlXPathObject_auto_ptr(xmlXPathObject *_P = 0) + : _Owns(_P != 0), _Ptr(_P) {} + xmlXPathObject_auto_ptr(const xmlXPathObject_auto_ptr& _Y) + : _Owns(_Y._Owns), _Ptr(_Y.release()) {} + xmlXPathObject_auto_ptr& operator=(const xmlXPathObject_auto_ptr& _Y) + {if (this != &_Y) + {if (_Ptr != _Y.get()) + {if (_Owns && _Ptr) + xmlXPathFreeObject(_Ptr); + _Owns = _Y._Owns; } + else if (_Y._Owns) + _Owns = true; + _Ptr = _Y.release(); } + return (*this); } + ~xmlXPathObject_auto_ptr() + {if (_Owns && _Ptr) + xmlXPathFreeObject(_Ptr); } + xmlXPathObject& operator*() const + {return (*get()); } + xmlXPathObject *operator->() const + {return (get()); } + xmlXPathObject *get() const + {return (_Ptr); } + xmlXPathObject *release() const + {((xmlXPathObject_auto_ptr *)this)->_Owns = false; + return (_Ptr); } +private: + bool _Owns; + xmlXPathObject *_Ptr; +}; + +class xmlXPathContext_auto_ptr { +public: + explicit xmlXPathContext_auto_ptr(xmlXPathContext *_P = 0) + : _Owns(_P != 0), _Ptr(_P) {} + xmlXPathContext_auto_ptr(const xmlXPathContext_auto_ptr& _Y) + : _Owns(_Y._Owns), _Ptr(_Y.release()) {} + xmlXPathContext_auto_ptr& operator=(const xmlXPathContext_auto_ptr& _Y) + {if (this != &_Y) + {if (_Ptr != _Y.get()) + {if (_Owns && _Ptr) + xmlXPathFreeContext(_Ptr); + _Owns = _Y._Owns; } + else if (_Y._Owns) + _Owns = true; + _Ptr = _Y.release(); } + return (*this); } + ~xmlXPathContext_auto_ptr() + {if (_Owns && _Ptr) + xmlXPathFreeContext(_Ptr); } + xmlXPathContext& operator*() const + {return (*get()); } + xmlXPathContext *operator->() const + {return (get()); } + xmlXPathContext *get() const + {return (_Ptr); } + xmlXPathContext *release() const + {((xmlXPathContext_auto_ptr *)this)->_Owns = false; + return (_Ptr); } +private: + bool _Owns; + xmlXPathContext *_Ptr; +}; // defines @@ -28,30 +96,30 @@ // helpers -XalanNode& as_node(Pool& pool, const String& method_name, MethodParams *params, +GdomeNode *as_node(Pool& pool, const String& method_name, MethodParams *params, int index, const char *msg) { Value& value=params->as_no_junction(index, msg); if(strcmp(value.type(), VXNODE_TYPE)!=0) - PTHROW(0, 0, + throw Exception(0, 0, &method_name, msg); VXnode& vnode=*static_cast(&value); - return vnode.get_node(pool, &method_name); + return vnode.get_node(&method_name); } // helpers -XalanAttr& as_attr(Pool& pool, const String& method_name, MethodParams *params, +GdomeAttr * as_attr(Pool& pool, const String& method_name, MethodParams *params, int index, const char *msg) { - XalanNode& node=as_node(pool, method_name, params, index, msg); - - if(node.getNodeType()!=XalanNode::ATTRIBUTE_NODE) - PTHROW(0, 0, + GdomeNode *node=as_node(pool, method_name, params, index, msg); + GdomeException exc; + if(gdome_n_nodeType(node, &exc)!=GDOME_ATTRIBUTE_NODE) + throw Exception(0, 0, &method_name, msg); - return *reinterpret_cast(&node); + return GDOME_A(node); } // methods @@ -62,113 +130,127 @@ XalanAttr& as_attr(Pool& pool, const Str static void _insertBefore(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); - - XalanNode& newChild=as_node(pool, method_name, params, 0, "newChild must be node"); - XalanNode& refChild=as_node(pool, method_name, params, 1, "refChild must be node"); + GdomeNode *selfNode=vnode.get_node(&method_name); + GdomeNode *newChild=as_node(pool, method_name, params, 0, "newChild must be node"); + GdomeNode *refChild=as_node(pool, method_name, params, 1, "refChild must be node"); - try { - node.insertBefore(&newChild, &refChild); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + if(GdomeNode *retNode=gdome_n_insertBefore(selfNode, newChild, refChild, &exc)) { + // write out result + VXnode& result=*new(pool) VXnode(pool, retNode); + r.write_no_lang(result); + } else + throw Exception(0, 0, + &method_name, + exc); } // Node replaceChild(in Node newChild,in Node oldChild) raises(DOMException); static void _replaceChild(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); - - XalanNode& newChild=as_node(pool, method_name, params, 0, "newChild must be node"); - XalanNode& refChild=as_node(pool, method_name, params, 1, "refChild must be node"); + GdomeNode *selfNode=vnode.get_node(&method_name); + GdomeNode *newChild=as_node(pool, method_name, params, 0, "newChild must be node"); + GdomeNode *refChild=as_node(pool, method_name, params, 1, "refChild must be node"); - try { - node.replaceChild(&newChild, &refChild); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + if(GdomeNode *retNode=gdome_n_replaceChild(selfNode, newChild, refChild, &exc)) { + // write out result + r.write_no_lang(*new(pool) VXnode(pool, retNode)); + } else + throw Exception(0, 0, + &method_name, + exc); } // Node removeChild(in Node oldChild) raises(DOMException); static void _removeChild(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); - - XalanNode& oldChild=as_node(pool, method_name, params, 0, "oldChild must be node"); + GdomeNode *selfNode=vnode.get_node(&method_name); + GdomeNode *oldChild=as_node(pool, method_name, params, 0, "oldChild must be node"); - try { - node.removeChild(&oldChild); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + if(GdomeNode *retNode=gdome_n_removeChild(selfNode, oldChild, &exc)) { + // write out result + r.write_no_lang(*new(pool) VXnode(pool, retNode)); + } else + throw Exception(0, 0, + &method_name, + exc); } // Node appendChild(in Node newChild) raises(DOMException); static void _appendChild(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); - - XalanNode& newChild=as_node(pool, method_name, params, 0, "newChild must be node"); + GdomeNode *selfNode=vnode.get_node(&method_name); + GdomeNode *newChild=as_node(pool, method_name, params, 0, "newChild must be node"); - try { - node.appendChild(&newChild); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + if(GdomeNode *retNode=gdome_n_appendChild(selfNode, newChild, &exc)) { + // write out result + r.write_no_lang(*new(pool) VXnode(pool, retNode)); + } else + throw Exception(0, 0, + &method_name, + exc); } // boolean hasChildNodes(); static void _hasChildNodes(Request& r, const String& method_name, MethodParams *) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); + GdomeNode *node=vnode.get_node(&method_name); + GdomeException exc; // write out result - VBool& result=*new(pool) VBool(pool, node.hasChildNodes()); + VBool& result=*new(pool) VBool(pool, gdome_n_hasChildNodes(node, &exc)!=0); result.set_name(method_name); r.write_no_lang(result); } // Node cloneNode(in boolean deep); -/// @test 1. who frees it up? 2. ownerDocument=? +/// @test ownerDocument=? static void _cloneNode(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); + GdomeNode *node=vnode.get_node(&method_name); bool deep=params->as_bool(0, "deep must be bool", r); + GdomeException exc; // write out result - VXnode& result=*new(pool) VXnode(pool, node.cloneNode(deep)); + VXnode& result=*new(pool) VXnode(pool, gdome_n_cloneNode(node, deep, &exc)); result.set_name(method_name); r.write_no_lang(result); } // DOM1 element -XalanElement& get_self_element(Request& r, const String& method_name) { +GdomeElement *get_self_element(Request& r, const String& method_name) { Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); - XalanNode& node=vnode.get_node(pool, &method_name); + GdomeNode *node=vnode.get_node(&method_name); - if(node.getNodeType()!=XalanNode::ELEMENT_NODE) - PTHROW(0, 0, + GdomeException exc; + if(gdome_n_nodeType(node, &exc)!=GDOME_ELEMENT_NODE) + throw Exception(0, 0, &method_name, "method can be called on node of ELEMENT type"); - return *reinterpret_cast(&node); + return GDOME_EL(node); } // DOMString getAttribute(in DOMString name); static void _getAttribute(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - const char *name=params->as_string(0, "name must not be code").cstr(String::UL_AS_IS); + GdomeElement *element=get_self_element(r, method_name); + const String& name=params->as_string(0, "name must be string"); - const XalanDOMString& attribute_value=element.getAttribute(XalanDOMString(name)); + GdomeException exc; + GdomeDOMString *attribute_value= + gdome_el_getAttribute(element, pool.transcode(name).get(), &exc); // write out result r.write_no_lang(*new(pool) VString(pool.transcode(attribute_value))); } @@ -176,86 +258,96 @@ static void _getAttribute(Request& r, co // void setAttribute(in DOMString name, in DOMString value) raises(DOMException); static void _setAttribute(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - const char *name=params->as_string(0, "name must not be code").cstr(String::UL_AS_IS); - const char *attribute_value=params->as_string(1, "value must not be code").cstr(String::UL_AS_IS); - - try { - element.setAttribute( - XalanDOMString(name), - XalanDOMString(attribute_value)); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeElement *element=get_self_element(r, method_name); + const String& name=params->as_string(0, "name must be string"); + const String& attribute_value=params->as_string(1, "value must be string"); + + GdomeException exc; + gdome_el_setAttribute(element, + pool.transcode(name).get(), + pool.transcode(attribute_value).get(), + &exc); + if(exc) + throw Exception(0, 0, + &method_name, + exc); } // void removeAttribute(in DOMString name) raises(DOMException); static void _removeAttribute(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - const char *name=params->as_string(0, "name must not be code").cstr(String::UL_AS_IS); + GdomeElement *element=get_self_element(r, method_name); + const String& name=params->as_string(0, "name must be string"); - try { - element.removeAttribute(XalanDOMString(name)); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + gdome_el_removeAttribute(element, pool.transcode(name).get(), &exc); + if(exc) + throw Exception(0, 0, + &method_name, + exc); } // Attr getAttributeNode(in DOMString name); static void _getAttributeNode(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - const char *name=params->as_string(0, "name must not be code").cstr(String::UL_AS_IS); + GdomeElement *element=get_self_element(r, method_name); + const String& name=params->as_string(0, "name must be string"); - if(XalanAttr *attr=element.getAttributeNode(XalanDOMString(name))) { + GdomeException exc; + if(GdomeAttr *attr=gdome_el_getAttributeNode(element, pool.transcode(name).get(), &exc)) { // write out result - VXnode& result=*new(pool) VXnode(pool, attr); + VXnode& result=*new(pool) VXnode(pool, (GdomeNode *)attr); r.write_no_lang(result); - } + } else if(exc) + throw Exception(0, 0, + &method_name, + exc); } // Attr setAttributeNode(in Attr newAttr) raises(DOMException); static void _setAttributeNode(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - XalanAttr& newAttr=as_attr(pool, method_name, params, 0, "newAttr must be ATTRIBUTE node"); + GdomeElement *element=get_self_element(r, method_name); + GdomeAttr * newAttr=as_attr(pool, method_name, params, 0, "newAttr must be ATTRIBUTE node"); - try { - if(XalanAttr *returnAttr=element.setAttributeNode(&newAttr)) { - // write out result - VXnode& result=*new(pool) VXnode(pool, returnAttr); - r.write_no_lang(result); - } - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + if(GdomeAttr *returnAttr=gdome_el_setAttributeNode(element, newAttr, &exc)) { + // write out result + VXnode& result=*new(pool) VXnode(pool, (GdomeNode *)returnAttr); + r.write_no_lang(result); + } else + throw Exception(0, 0, + &method_name, + exc); } // Attr removeAttributeNode(in Attr oldAttr) raises(DOMException); static void _removeAttributeNode(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); - XalanAttr& oldAttr=as_attr(pool, method_name, params, 0, "oldAttr must be ATTRIBUTE node"); + GdomeElement *element=get_self_element(r, method_name); + GdomeAttr * oldAttr=as_attr(pool, method_name, params, 0, "oldAttr must be ATTRIBUTE node"); - try { - /*XalanAttr *returnAttr*/element.removeAttributeNode(&oldAttr); - } catch(const XalanDOMException& e) { - pool.exception()._throw(pool, &method_name, e); - } + GdomeException exc; + gdome_el_removeAttributeNode(element, oldAttr, &exc); + if(exc) + throw Exception(0, 0, + &method_name, + exc); } // NodeList getElementsByTagName(in DOMString name); static void _getElementsByTagName(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - XalanElement& element=get_self_element(r, method_name); + GdomeElement *element=get_self_element(r, method_name); - const char *name=params->as_string(0, "name must not be code").cstr(String::UL_AS_IS); + const String& name=params->as_string(0, "name must be string"); VHash& result=*new(pool) VHash(pool); - if(const XalanNodeList *nodes= - element.getElementsByTagName(XalanDOMString(name))) { - for(int i=0; igetLength(); i++) { + GdomeException exc; + if(GdomeNodeList *nodes= + gdome_el_getElementsByTagName(element, pool.transcode(name).get(), &exc)) { + gulong length=gdome_nl_length(nodes, &exc); + for(gulong i=0; iitem(i))); + result.hash(0).put(skey, new(pool) VXnode(pool, gdome_nl_item(nodes, i, &exc))); } - } + } else if(exc) + throw Exception(0, 0, + &method_name, + exc); // write out result r.write_no_lang(result); @@ -273,20 +368,26 @@ static void _getElementsByTagName(Reques // void normalize(); static void _normalize(Request& r, const String& method_name, MethodParams *) { - XalanElement& element=get_self_element(r, method_name); + Pool& pool=r.pool(); + VXnode& vnode=*static_cast(r.self); + GdomeNode *selfNode=vnode.get_node(&method_name); - element.normalize(); + GdomeException exc; + gdome_n_normalize(selfNode, &exc); + if(exc) + throw Exception(0, 0, + &method_name, + exc); } - - +/* static void _select(Request& r, const String& method_name, MethodParams *params) { // _asm int 3; Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); // expression - const String& expression=params->as_string(0, "expression must not be code"); - const char *expression_cstr=expression.cstr(String::UL_AS_IS); + const String& expression=params->as_string(0, "expression must be string"); + const char *expression_cstr=expression.cstr(); XalanDOMString dstring(expression_cstr); const XalanDOMChar *expression_dcstr=dstring.c_str(); @@ -296,7 +397,7 @@ static void _select(Request& r, const St try { NodeRefList list=evaluator.selectNodeList(dom_support, - &vnode.get_node(pool, &method_name), + &vnode.get_node(&method_name), expression_dcstr); VHash& result=*new(pool) VHash(pool); @@ -308,44 +409,61 @@ static void _select(Request& r, const St skey << buf; } - result.hash().put(skey, new(pool) VXnode(pool, list.item(i))); + result.hash(0).put(skey, new(pool) VXnode(pool, list.item(i), false)); } result.set_name(method_name); r.write_no_lang(result); } catch(const XSLException& e) { - pool.exception()._throw(pool, &expression, e); + Exception::provide_source(pool, &expression, e); } } - -static void _select_single(Request& r, const String& method_name, MethodParams *params) { +*/ +static void _selectSingle(Request& r, const String& method_name, MethodParams *params) { // _asm int 3; Pool& pool=r.pool(); VXnode& vnode=*static_cast(r.self); // expression - const String& expression=params->as_string(0, "expression must not be code"); - const char *expression_cstr=expression.cstr(String::UL_AS_IS); - XalanDOMString dstring(expression_cstr); - const XalanDOMChar *expression_dcstr=dstring.c_str(); - - XPathEvaluator evaluator; - // Initialize the XalanSourceTree subsystem... -// XalanSourceTreeInit theSourceTreeInit; - // We'll use these to parse the XML file. - XalanSourceTreeDOMSupport dom_support; + const String& expression=params->as_string(0, "expression must be string"); - try { - if(XalanNode *node=evaluator.selectSingleNode(dom_support, - &vnode.get_node(pool, &method_name), - expression_dcstr)) { - - VXnode& result=*new(pool) VXnode(pool, node); - result.set_name(method_name); - r.write_no_lang(result); + GdomeException exc; + GdomeNode *dome_node=vnode.get_node(&method_name); + GdomeDocument *dome_document=gdome_n_ownerDocument(dome_node, &exc); + if(!dome_document) + dome_document=GDOME_DOC(dome_node); + xmlDoc *xml_document=((_Gdome_xml_Document *)dome_document)->n; + xmlXPathContext_auto_ptr ctxt(xmlXPathNewContext(xml_document)); + ctxt->node=xmlDocGetRootElement(xml_document); + /*error to stderr for now*/ + xmlXPathObject_auto_ptr res( + xmlXPathEvalExpression(BAD_CAST pool.transcode(expression)->str, ctxt.get())); + + if(res.get()) + switch(res->type) { + case XPATH_UNDEFINED: break; + case XPATH_NODESET: + { + if(res->nodesetval->nodeNr>1) + throw Exception(0, 0, + &expression, + "resulted not in a single node (%d)", res->nodesetval->nodeNr); + + VXnode& result=*new(pool) VXnode( + pool, + gdome_xml_n_mkref(res->nodesetval->nodeTab[0])); + result.set_name(method_name); + r.write_no_lang(result); + break; + } + //case XPATH_BOOLEAN: nothing; break; + //case XPATH_NUMBER: nothing; break; + //case XPATH_STRING: nothing; break; + default: + throw Exception(0, 0, + &expression, + "unrecognized xmlXPathEvalExpression result type (%d)", res->type); + break; // never } - } catch(const XSLException& e) { - pool.exception()._throw(pool, &expression, e); - } } // constructor @@ -389,30 +507,29 @@ MXnode::MXnode(Pool& apool) : Methoded(a add_native_method("normalize", Method::CT_DYNAMIC, _normalize, 0, 0); /// parser - // ^node.select[/some/xpath/query] = hash $.#[dnode] - add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1); +// add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1); // ^node.selectSingle[/some/xpath/query] = first dnode - add_native_method("selectSingle", Method::CT_DYNAMIC, _select_single, 1, 1); + add_native_method("selectSingle", Method::CT_DYNAMIC, _selectSingle, 1, 1); // consts -#define CONST(name, value) \ - consts.put(*new(pool()) String(pool(), #name), new(pool()) VInt(pool(), value)) +#define CONST(name) \ + consts.put(*new(pool()) String(pool(), #name), new(pool()) VInt(pool(), GDOME_##name)) - CONST(ELEMENT_NODE, 1); - CONST(ATTRIBUTE_NODE, 2); - CONST(TEXT_NODE, 3); - CONST(CDATA_SECTION_NODE, 4); - CONST(ENTITY_REFERENCE_NODE, 5); - CONST(ENTITY_NODE, 6); - CONST(PROCESSING_INSTRUCTION_NODE, 7); - CONST(COMMENT_NODE, 8); - CONST(DOCUMENT_NODE, 9); - CONST(DOCUMENT_TYPE_NODE, 10); - CONST(DOCUMENT_FRAGMENT_NODE, 11); - CONST(NOTATION_NODE, 12); + CONST(ELEMENT_NODE); + CONST(ATTRIBUTE_NODE); + CONST(TEXT_NODE); + CONST(CDATA_SECTION_NODE); + CONST(ENTITY_REFERENCE_NODE); + CONST(ENTITY_NODE); + CONST(PROCESSING_INSTRUCTION_NODE); + CONST(COMMENT_NODE); + CONST(DOCUMENT_NODE); + CONST(DOCUMENT_TYPE_NODE); + CONST(DOCUMENT_FRAGMENT_NODE); + CONST(NOTATION_NODE); }