Annotation of parser3/src/classes/dom.C, revision 1.23
1.2 parser 1: /** @file
2: Parser: @b dom parser class.
3:
4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
5:
6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7: */
1.23 ! parser 8: static const char *RCSId="$Id: dom.C,v 1.22 2001/09/15 14:22:47 parser Exp $";
1.2 parser 9:
10: #if _MSC_VER
11: # pragma warning(disable:4291) // disable warning
12: // "no matching operator delete found; memory will not be freed if initialization throws an exception
13: #endif
14:
15: #include "classes.h"
16: #include "pa_request.h"
17: #include "pa_vdom.h"
1.9 parser 18: #include "pa_vfile.h"
1.20 parser 19: #include "pa_xslt_stylesheet_manager.h"
20: #include "pa_stylesheet_connection.h"
1.23 ! parser 21: #include "dnode.h"
1.2 parser 22:
1.16 parser 23: #include <strstream>
1.2 parser 24: #include <Include/PlatformDefinitions.hpp>
25: #include <util/PlatformUtils.hpp>
26: #include <XalanTransformer/XalanTransformer.hpp>
1.4 parser 27: #include <XalanTransformer/XalanParsedSource.hpp>
28: #include <PlatformSupport/XalanFileOutputStream.hpp>
29: #include <PlatformSupport/XalanOutputStreamPrintWriter.hpp>
1.6 parser 30: #include <PlatformSupport/DOMStringPrintWriter.hpp>
1.4 parser 31: #include <XMLSupport/FormatterToXML.hpp>
1.13 parser 32: #include <XMLSupport/FormatterToHTML.hpp>
33: #include <XMLSupport/FormatterToText.hpp>
1.4 parser 34: #include <XMLSupport/FormatterTreeWalker.hpp>
1.6 parser 35:
1.2 parser 36: // defines
37:
1.4 parser 38: #define DOM_CLASS_NAME "dom"
1.2 parser 39:
1.13 parser 40: #define DOM_OUTPUT_METHOD_OPTION_NAME "method"
41: #define DOM_OUTPUT_METHOD_OPTION_VALUE_XML "xml"
42: #define DOM_OUTPUT_METHOD_OPTION_VALUE_HTML "html"
43: #define DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT "text"
44:
45: #define DOM_OUTPUT_ENCODING_OPTION_NAME "encoding"
46:
47: #define DOM_OUTPUT_DEFAULT_INDENT 4
48:
1.2 parser 49: // class
50:
1.23 ! parser 51: class MDom : public MDNode {
1.2 parser 52: public: // VStateless_class
1.11 parser 53: Value *create_new_value(Pool& pool) { return new(pool) VDom(pool); }
1.2 parser 54:
55: public:
56: MDom(Pool& pool);
57:
58: public: // Methoded
59: bool used_directly() { return true; }
60: };
61:
62: // methods
63:
1.16 parser 64: static void _set(Request& r, const String& method_name, MethodParams *params) {
65: Pool& pool=r.pool();
66: VDom& vDom=*static_cast<VDom *>(r.self);
67:
1.17 parser 68: Value& vxml=params->as_junction(0, "xml must be code");
69: Temp_lang temp_lang(r, String::UL_XML);
70: const String& xml=r.process(vxml).as_string();
71:
72: std::istrstream stream(xml.cstr());
1.16 parser 73: XalanParsedSource* parsedSource;
1.22 parser 74: int error=vDom.transformer().parseSource(&stream, parsedSource);
1.16 parser 75:
76: if(error)
77: PTHROW(0, 0,
78: &method_name,
1.22 parser 79: vDom.transformer().getLastError());
1.16 parser 80:
81: // replace any previous parsed source
82: vDom.set_parsed_source(*parsedSource);
83: }
84:
1.2 parser 85: static void _load(Request& r, const String& method_name, MethodParams *params) {
86: Pool& pool=r.pool();
1.10 parser 87: VDom& vDom=*static_cast<VDom *>(r.self);
1.2 parser 88:
1.10 parser 89: // filespec
1.20 parser 90: const String& file_name=params->as_string(0, "file name must not be code");
91: const char *filespec=r.absolute(file_name).cstr(String::UL_FILE_SPEC);
1.2 parser 92:
93: XalanParsedSource* parsedSource;
1.22 parser 94: int error=vDom.transformer().parseSource(filespec, parsedSource);
1.2 parser 95:
96: if(error)
97: PTHROW(0, 0,
1.20 parser 98: &file_name,
1.22 parser 99: vDom.transformer().getLastError());
1.2 parser 100:
1.15 parser 101: // replace any previous parsed source
1.11 parser 102: vDom.set_parsed_source(*parsedSource);
1.2 parser 103: }
104:
1.18 parser 105: class ParserStringXalanOutputStream: public XalanOutputStream {
1.6 parser 106: public:
107:
1.18 parser 108: explicit ParserStringXalanOutputStream(String& astring) : fstring(astring) {}
1.7 parser 109:
110: protected: // XalanOutputStream
111:
112: virtual void writeData(const char *theBuffer, unsigned long theBufferLength) {
1.6 parser 113: char *copy=(char *)fstring.malloc((size_t)theBufferLength);
114: memcpy(copy, theBuffer, (size_t)theBufferLength);
115: fstring.APPEND_CLEAN(copy, (size_t)theBufferLength, "dom", -1);
116: }
117:
1.7 parser 118: virtual void doFlush() {}
1.6 parser 119:
120: private:
121:
122: String& fstring;
123:
124: };
125:
126:
1.21 parser 127: static void create_optioned_listener(
128: const char *& content_type, const char *& charset, FormatterListener *& listener,
129: Pool& pool,
130: const String& method_name, MethodParams *params, int index, Writer& writer) {
1.19 parser 131: charset=0;
1.13 parser 132: const String *method=0;
133: XalanDOMString xalan_encoding;
134:
135: Value& voptions=params->as_no_junction(index, "options must not be code");
136: if(voptions.is_defined()) {
137: if(Hash *options=voptions.get_hash()) {
138: // $.method[xml|html|text]
1.15 parser 139: if(Value *vmethod=static_cast<Value *>(options->get(*new(pool)
140: String(pool, DOM_OUTPUT_METHOD_OPTION_NAME))))
141: method=&vmethod->as_string();
1.13 parser 142:
143: // $.encoding[windows-1251|...]
144: if(Value *vencoding=static_cast<Value *>(options->get(*new(pool)
145: String(pool, DOM_OUTPUT_ENCODING_OPTION_NAME)))) {
1.19 parser 146: charset=vencoding->as_string().cstr();
147: xalan_encoding.append(charset, strlen(charset));
1.13 parser 148: }
149: } else
150: PTHROW(0, 0,
151: &method_name,
1.16 parser 152: "options must be hash");
1.13 parser 153: }
154:
1.18 parser 155: if(!method/*default='xml'*/ || *method == DOM_OUTPUT_METHOD_OPTION_VALUE_XML) {
156: content_type="text/xml";
157: listener=new FormatterToXML(writer,
1.13 parser 158: XalanDOMString(), // version
159: true, // doIndent
160: DOM_OUTPUT_DEFAULT_INDENT, // indent
161: xalan_encoding // encoding
162: );
1.18 parser 163: } else if(*method == DOM_OUTPUT_METHOD_OPTION_VALUE_HTML) {
164: content_type="text/html";
165: listener=new FormatterToHTML(writer,
1.13 parser 166: xalan_encoding, // encoding
167: XalanDOMString(), // mediaType
168: XalanDOMString(), // doctypeSystem; String to be printed at the top of the document
169: XalanDOMString(), // doctypePublic
170: true, // doIndent
171: DOM_OUTPUT_DEFAULT_INDENT // indent
172: );
1.18 parser 173: } else if(*method == DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT) {
174: content_type="text/plain";
175: listener=new FormatterToText(writer,
1.13 parser 176: xalan_encoding // encoding
177: );
1.18 parser 178: } else
1.13 parser 179: PTHROW(0, 0,
180: method,
1.14 parser 181: DOM_OUTPUT_METHOD_OPTION_NAME " option is invalid; valid methods are: "
182: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_XML "', "
183: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_HTML "', "
1.13 parser 184: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT "'");
185:
186: // never reached
187: }
188:
1.3 parser 189: static void _save(Request& r, const String& method_name, MethodParams *params) {
190: Pool& pool=r.pool();
1.10 parser 191: VDom& vDom=*static_cast<VDom *>(r.self);
1.3 parser 192:
193: // filespec
1.20 parser 194: const String& file_name=params->as_string(1, "file name must not be code");
195: const char *filespec=r.absolute(file_name).cstr(String::UL_FILE_SPEC);
1.3 parser 196:
1.11 parser 197: // document
198: XalanDocument& document=vDom.get_document(pool, &method_name);
1.3 parser 199:
1.5 parser 200: try {
1.6 parser 201: XalanFileOutputStream stream(XalanDOMString(filespec, strlen(filespec)));
202: XalanOutputStreamPrintWriter writer(stream);
1.19 parser 203: const char *content_type, *charset;
1.18 parser 204: FormatterListener *formatterListener;
1.19 parser 205: create_optioned_listener(content_type, charset, formatterListener,
1.18 parser 206: pool, method_name, params, 0, writer);
207: FormatterTreeWalker treeWalker(*formatterListener);
1.11 parser 208: treeWalker.traverse(&document); // Walk the document and produce the XML...
1.6 parser 209: } catch(const XSLException& e) {
210: _throw(pool, &method_name, e);
211: }
212: }
213:
214: static void _string(Request& r, const String& method_name, MethodParams *params) {
215: Pool& pool=r.pool();
1.10 parser 216: VDom& vDom=*static_cast<VDom *>(r.self);
1.6 parser 217:
1.11 parser 218: // document
219: XalanDocument& document=vDom.get_document(pool, &method_name);
1.6 parser 220:
221: try {
1.9 parser 222: String parserString=*new(pool) String(pool);
1.18 parser 223: ParserStringXalanOutputStream stream(parserString);
1.6 parser 224: XalanOutputStreamPrintWriter writer(stream);
1.19 parser 225: const char *content_type, *charset;
1.18 parser 226: FormatterListener *formatterListener;
1.19 parser 227: create_optioned_listener(content_type, charset, formatterListener,
1.18 parser 228: pool, method_name, params, 0, writer);
229: FormatterTreeWalker treeWalker(*formatterListener);
1.11 parser 230: treeWalker.traverse(&document); // Walk the document and produce the XML...
1.6 parser 231:
232: // write out result
1.9 parser 233: r.write_no_lang(parserString);
1.5 parser 234: } catch(const XSLException& e) {
235: _throw(pool, &method_name, e);
236: }
1.3 parser 237: }
238:
1.9 parser 239:
240: static void _file(Request& r, const String& method_name, MethodParams *params) {
241: Pool& pool=r.pool();
1.10 parser 242: VDom& vDom=*static_cast<VDom *>(r.self);
1.9 parser 243:
1.11 parser 244: // document
245: XalanDocument& document=vDom.get_document(pool, &method_name);
1.9 parser 246:
247: try {
248: String& parserString=*new(pool) String(pool);
1.18 parser 249: ParserStringXalanOutputStream stream(parserString);
1.9 parser 250: XalanOutputStreamPrintWriter writer(stream);
1.19 parser 251: const char *content_type, *charset;
1.18 parser 252: FormatterListener *formatterListener;
1.19 parser 253: create_optioned_listener(content_type, charset, formatterListener,
1.18 parser 254: pool, method_name, params, 0, writer);
255: FormatterTreeWalker treeWalker(*formatterListener);
1.11 parser 256: treeWalker.traverse(&document); // Walk the document and produce the XML...
1.9 parser 257:
258: // write out result
259: VFile& vfile=*new(pool) VFile(pool);
260: const char *cstr=parserString.cstr();
1.19 parser 261: String *scontent_type=new(pool) String(pool, content_type);
262: Value *vcontent_type;
263: if(charset) {
264: VHash *vhcontent_type=new(pool) VHash(pool);
265: vhcontent_type->hash().put(*value_name, new(pool) VString(*scontent_type));
266: String *scharset=new(pool) String(pool, charset);
267: vhcontent_type->hash().put(*new(pool) String(pool, "charset"), new(pool) VString(*scharset));
268: vcontent_type=vhcontent_type;
269: } else
270: vcontent_type=new(pool) VString(*scontent_type);
1.20 parser 271: vfile.set(false/*tainted*/, cstr, strlen(cstr), 0/*file_name*/, vcontent_type);
1.9 parser 272: r.write_no_lang(vfile);
273: } catch(const XSLException& e) {
274: _throw(pool, &method_name, e);
275: }
276: }
277:
278:
1.12 parser 279: static void add_xslt_param(const Hash::Key& aattribute, Hash::Val *ameaning,
1.20 parser 280: void *info) {
1.12 parser 281: XalanTransformer& transformer=*static_cast<XalanTransformer *>(info);
282: const char *attribute_cstr=aattribute.cstr();
283: const char *meaning_cstr=static_cast<Value *>(ameaning)->as_string().cstr();
284:
285: transformer.setStylesheetParam(
1.23 ! parser 286: XalanDOMString(attribute_cstr),
! 287: XalanDOMString(meaning_cstr));
1.12 parser 288: }
1.10 parser 289: static void _xslt(Request& r, const String& method_name, MethodParams *params) {
290: Pool& pool=r.pool();
291: VDom& vDom=*static_cast<VDom *>(r.self);
292:
1.12 parser 293: // params
294: if(params->size()>1) {
1.18 parser 295: Value& vparams=params->as_no_junction(1, "transform parameters parameter must not be code");
1.12 parser 296: if(vparams.is_defined())
297: if(Hash *params=vparams.get_hash())
1.22 parser 298: params->for_each(add_xslt_param, &vDom.transformer());
1.12 parser 299: else
300: PTHROW(0, 0,
301: &method_name,
1.18 parser 302: "transform parameters parameter must be hash");
1.12 parser 303: }
304:
1.10 parser 305: // source
1.11 parser 306: XalanParsedSource &parsed_source=vDom.get_parsed_source(pool, &method_name);
1.10 parser 307:
308: // stylesheet
1.20 parser 309: const String& stylesheet_file_name=params->as_string(0, "file name must not be code");
310: const String& stylesheet_filespec=r.absolute(stylesheet_file_name);
311: //_asm int 3;
312: Stylesheet_connection& connection=XSLT_stylesheet_manager->get_connection(stylesheet_filespec);
1.10 parser 313:
314: // target
1.22 parser 315: XalanDocument* target=vDom.parser_liaison().createDocument();
1.10 parser 316: XSLTResultTarget domResultTarget(target);
317:
318: // transform
1.22 parser 319: int error=vDom.transformer().transform(
1.20 parser 320: parsed_source,
321: &connection.stylesheet(),
322: domResultTarget);
323: connection.close();
1.10 parser 324: if(error)
325: PTHROW(0, 0,
1.20 parser 326: &stylesheet_file_name,
1.22 parser 327: vDom.transformer().getLastError());
1.10 parser 328:
329: // write out result
1.11 parser 330: VDom& result=*new(pool) VDom(pool);
331: result.set_document(*target);
332: r.write_no_lang(result);
1.10 parser 333: }
334:
1.2 parser 335: // constructor
336:
1.23 ! parser 337: MDom::MDom(Pool& apool) : MDNode(apool) {
1.4 parser 338: set_name(*NEW String(pool(), DOM_CLASS_NAME));
1.16 parser 339:
340: // ^dom::set[<some>xml</some>]
341: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 1);
1.2 parser 342:
1.3 parser 343: // ^dom::load[some.xml]
1.2 parser 344: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.3 parser 345:
1.13 parser 346: // ^dom.save[options hash;some.xml]
1.8 parser 347: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.2 parser 348:
1.13 parser 349: // ^dom.string[options hash] <doc/>
1.7 parser 350: add_native_method("string", Method::CT_DYNAMIC, _string, 1, 1);
1.9 parser 351:
1.13 parser 352: // ^dom.file[options hash] file with "<doc/>"
1.9 parser 353: add_native_method("file", Method::CT_DYNAMIC, _file, 1, 1);
1.10 parser 354:
1.20 parser 355: // ^dom.xslt[stylesheet file_name]
356: // ^dom.xslt[stylesheet file_name;params hash]
1.12 parser 357: add_native_method("xslt", Method::CT_DYNAMIC, _xslt, 1, 2);
1.6 parser 358:
1.2 parser 359: }
360: // global variable
361:
362: Methoded *Dom_class;
363:
364: // creator
365:
366: Methoded *MDom_create(Pool& pool) {
367: // Use the static initializers to initialize the Xalan-C++ and Xerces-C++ platforms.
368: // You must initialize Xerces-C++ once per process
369: XMLPlatformUtils::Initialize();
370: XalanTransformer::initialize();
371:
372: return Dom_class=new(pool) MDom(pool);
373: }
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