Annotation of parser3/src/classes/dom.C, revision 1.33
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: */
1.33 ! parser 8: #include "classes.h"
! 9: #ifdef XML
! 10:
! 11: static const char *RCSId="$Id: dom.C,v 1.32 2001/09/21 09:04:18 parser Exp $";
1.2 parser 12:
13: #include "pa_request.h"
14: #include "pa_vdom.h"
1.20 parser 15: #include "pa_xslt_stylesheet_manager.h"
16: #include "pa_stylesheet_connection.h"
1.26 parser 17: #include "pa_vfile.h"
1.23 parser 18: #include "dnode.h"
1.2 parser 19:
1.16 parser 20: #include <strstream>
1.2 parser 21: #include <Include/PlatformDefinitions.hpp>
22: #include <util/PlatformUtils.hpp>
23: #include <XalanTransformer/XalanTransformer.hpp>
1.4 parser 24: #include <XalanTransformer/XalanParsedSource.hpp>
1.26 parser 25: #include <XMLSupport/FormatterToXML.hpp>
26: #include <XMLSupport/FormatterToHTML.hpp>
27: #include <XMLSupport/FormatterToText.hpp>
28: #include <XMLSupport/FormatterTreeWalker.hpp>
29: #include <PlatformSupport/XalanFileOutputStream.hpp>
30: #include <PlatformSupport/XalanOutputStreamPrintWriter.hpp>
31: #include <PlatformSupport/DOMStringPrintWriter.hpp>
1.6 parser 32:
1.2 parser 33: // defines
34:
1.4 parser 35: #define DOM_CLASS_NAME "dom"
1.2 parser 36:
1.26 parser 37: #define DOM_OUTPUT_METHOD_OPTION_NAME "method"
38: #define DOM_OUTPUT_METHOD_OPTION_VALUE_XML "xml"
39: #define DOM_OUTPUT_METHOD_OPTION_VALUE_HTML "html"
40: #define DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT "text"
41:
42: #define DOM_OUTPUT_ENCODING_OPTION_NAME "encoding"
43:
44: #define DOM_OUTPUT_DEFAULT_INDENT 4
45:
1.2 parser 46: // class
47:
1.24 parser 48: class MDom : public MDnode {
1.2 parser 49: public: // VStateless_class
1.11 parser 50: Value *create_new_value(Pool& pool) { return new(pool) VDom(pool); }
1.2 parser 51:
52: public:
53: MDom(Pool& pool);
54:
55: public: // Methoded
56: bool used_directly() { return true; }
57: };
58:
59: // methods
60:
1.26 parser 61: class ParserStringXalanOutputStream: public XalanOutputStream {
62: public:
63:
64: explicit ParserStringXalanOutputStream(String& astring) : fstring(astring) {}
65:
66: protected: // XalanOutputStream
67:
68: virtual void writeData(const char *theBuffer, unsigned long theBufferLength) {
69: char *copy=(char *)fstring.malloc((size_t)theBufferLength);
70: memcpy(copy, theBuffer, (size_t)theBufferLength);
71: fstring.APPEND_CLEAN(copy, (size_t)theBufferLength, "dom", -1);
72: }
73:
74: virtual void doFlush() {}
75:
76: private:
77:
78: String& fstring;
79:
80: };
81:
82: static void create_optioned_listener(
83: const char *& content_type, const char *& charset, FormatterListener *& listener,
84: Pool& pool,
85: const String& method_name, MethodParams *params, int index, Writer& writer) {
1.31 parser 86: // default encoding from pool
1.32 parser 87: const String *scharset=&pool.get_charset();
1.26 parser 88: const String *method=0;
89: XalanDOMString xalan_encoding;
90:
1.27 parser 91: if(params->size()>index) {
92: Value& voptions=params->as_no_junction(index, "options must not be code");
93: if(voptions.is_defined()) {
94: if(Hash *options=voptions.get_hash()) {
95: // $.method[xml|html|text]
96: if(Value *vmethod=static_cast<Value *>(options->get(*new(pool)
97: String(pool, DOM_OUTPUT_METHOD_OPTION_NAME))))
98: method=&vmethod->as_string();
99:
100: // $.encoding[windows-1251|...]
101: if(Value *vencoding=static_cast<Value *>(options->get(*new(pool)
102: String(pool, DOM_OUTPUT_ENCODING_OPTION_NAME)))) {
1.32 parser 103: scharset=&vencoding->as_string();
1.31 parser 104: }
1.27 parser 105: } else
106: PTHROW(0, 0,
107: &method_name,
108: "options must be hash");
109: }
1.26 parser 110: }
111:
1.32 parser 112: xalan_encoding.append(charset=scharset->cstr());
1.26 parser 113: if(!method/*default='xml'*/ || *method == DOM_OUTPUT_METHOD_OPTION_VALUE_XML) {
114: content_type="text/xml";
115: listener=new FormatterToXML(writer,
116: XalanDOMString(), // version
117: true, // doIndent
118: DOM_OUTPUT_DEFAULT_INDENT, // indent
119: xalan_encoding // encoding
120: );
121: } else if(*method == DOM_OUTPUT_METHOD_OPTION_VALUE_HTML) {
122: content_type="text/html";
123: listener=new FormatterToHTML(writer,
124: xalan_encoding, // encoding
125: XalanDOMString(), // mediaType
126: XalanDOMString(), // doctypeSystem; String to be printed at the top of the document
127: XalanDOMString(), // doctypePublic
128: true, // doIndent
129: DOM_OUTPUT_DEFAULT_INDENT // indent
130: );
131: } else if(*method == DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT) {
132: content_type="text/plain";
133: listener=new FormatterToText(writer,
134: xalan_encoding // encoding
135: );
136: } else
137: PTHROW(0, 0,
138: method,
139: DOM_OUTPUT_METHOD_OPTION_NAME " option is invalid; valid methods are: "
140: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_XML "', "
141: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_HTML "', "
142: "'" DOM_OUTPUT_METHOD_OPTION_VALUE_TEXT "'");
143:
144: // never reached
145: }
146:
147: static void _save(Request& r, const String& method_name, MethodParams *params) {
148: Pool& pool=r.pool();
149: VDnode& vnode=*static_cast<VDnode *>(r.self);
150:
151: // filespec
1.27 parser 152: const String& file_name=params->as_string(0, "file name must not be code");
1.26 parser 153: const char *filespec=r.absolute(file_name).cstr(String::UL_FILE_SPEC);
154:
155: // node
156: XalanNode& node=vnode.get_node(pool, &method_name);
157:
158: try {
159: XalanFileOutputStream stream(XalanDOMString(filespec, strlen(filespec)));
160: XalanOutputStreamPrintWriter writer(stream);
161: const char *content_type, *charset;
162: FormatterListener *formatterListener;
163: create_optioned_listener(content_type, charset, formatterListener,
1.27 parser 164: pool, method_name, params, 1, writer);
1.26 parser 165: FormatterTreeWalker treeWalker(*formatterListener);
166: treeWalker.traverse(&node); // Walk that node and produce the XML...
167: } catch(const XSLException& e) {
1.28 parser 168: r._throw(&method_name, e);
1.26 parser 169: }
170: }
171:
172: static void _string(Request& r, const String& method_name, MethodParams *params) {
173: Pool& pool=r.pool();
174: VDnode& vnode=*static_cast<VDnode *>(r.self);
175:
176: // node
177: XalanNode& node=vnode.get_node(pool, &method_name);
178:
179: try {
180: String parserString=*new(pool) String(pool);
181: ParserStringXalanOutputStream stream(parserString);
182: XalanOutputStreamPrintWriter writer(stream);
183: const char *content_type, *charset;
184: FormatterListener *formatterListener;
185: create_optioned_listener(content_type, charset, formatterListener,
186: pool, method_name, params, 0, writer);
187: FormatterTreeWalker treeWalker(*formatterListener);
188: treeWalker.traverse(&node); // Walk that node and produce the XML...
189:
190: // write out result
191: r.write_no_lang(parserString);
192: } catch(const XSLException& e) {
1.28 parser 193: r._throw(&method_name, e);
1.26 parser 194: }
195: }
196:
197:
198: static void _file(Request& r, const String& method_name, MethodParams *params) {
199: Pool& pool=r.pool();
200: VDnode& vnode=*static_cast<VDnode *>(r.self);
201:
202: // node
203: XalanNode& node=vnode.get_node(pool, &method_name);
204:
205: try {
206: String& parserString=*new(pool) String(pool);
207: ParserStringXalanOutputStream stream(parserString);
208: XalanOutputStreamPrintWriter writer(stream);
209: const char *content_type, *charset;
210: FormatterListener *formatterListener;
211: create_optioned_listener(content_type, charset, formatterListener,
212: pool, method_name, params, 0, writer);
213: FormatterTreeWalker treeWalker(*formatterListener);
214: treeWalker.traverse(&node); // Walk that node and produce the XML...
215:
216: // write out result
217: VFile& vfile=*new(pool) VFile(pool);
218: const char *cstr=parserString.cstr();
219: String *scontent_type=new(pool) String(pool, content_type);
220: Value *vcontent_type;
221: if(charset) {
222: VHash *vhcontent_type=new(pool) VHash(pool);
223: vhcontent_type->hash().put(*value_name, new(pool) VString(*scontent_type));
224: String *scharset=new(pool) String(pool, charset);
225: vhcontent_type->hash().put(*new(pool) String(pool, "charset"), new(pool) VString(*scharset));
226: vcontent_type=vhcontent_type;
227: } else
228: vcontent_type=new(pool) VString(*scontent_type);
229: vfile.set(false/*tainted*/, cstr, strlen(cstr), 0/*file_name*/, vcontent_type);
230: r.write_no_lang(vfile);
231: } catch(const XSLException& e) {
1.28 parser 232: r._throw(&method_name, e);
1.26 parser 233: }
234: }
235:
1.16 parser 236: static void _set(Request& r, const String& method_name, MethodParams *params) {
237: Pool& pool=r.pool();
1.26 parser 238: VDom& vdom=*static_cast<VDom *>(r.self);
1.16 parser 239:
1.17 parser 240: Value& vxml=params->as_junction(0, "xml must be code");
241: Temp_lang temp_lang(r, String::UL_XML);
242: const String& xml=r.process(vxml).as_string();
243:
244: std::istrstream stream(xml.cstr());
1.16 parser 245: XalanParsedSource* parsedSource;
1.26 parser 246: int error=vdom.transformer().parseSource(&stream, parsedSource);
1.16 parser 247:
248: if(error)
249: PTHROW(0, 0,
250: &method_name,
1.26 parser 251: vdom.transformer().getLastError());
1.16 parser 252:
253: // replace any previous parsed source
1.26 parser 254: vdom.set_parsed_source(*parsedSource);
1.16 parser 255: }
256:
1.2 parser 257: static void _load(Request& r, const String& method_name, MethodParams *params) {
258: Pool& pool=r.pool();
1.26 parser 259: VDom& vdom=*static_cast<VDom *>(r.self);
1.2 parser 260:
1.10 parser 261: // filespec
1.20 parser 262: const String& file_name=params->as_string(0, "file name must not be code");
263: const char *filespec=r.absolute(file_name).cstr(String::UL_FILE_SPEC);
1.2 parser 264:
265: XalanParsedSource* parsedSource;
1.26 parser 266: int error=vdom.transformer().parseSource(filespec, parsedSource);
1.2 parser 267:
268: if(error)
269: PTHROW(0, 0,
1.20 parser 270: &file_name,
1.26 parser 271: vdom.transformer().getLastError());
1.2 parser 272:
1.15 parser 273: // replace any previous parsed source
1.26 parser 274: vdom.set_parsed_source(*parsedSource);
1.2 parser 275: }
276:
1.12 parser 277: static void add_xslt_param(const Hash::Key& aattribute, Hash::Val *ameaning,
1.20 parser 278: void *info) {
1.12 parser 279: XalanTransformer& transformer=*static_cast<XalanTransformer *>(info);
280: const char *attribute_cstr=aattribute.cstr();
281: const char *meaning_cstr=static_cast<Value *>(ameaning)->as_string().cstr();
282:
283: transformer.setStylesheetParam(
1.23 parser 284: XalanDOMString(attribute_cstr),
285: XalanDOMString(meaning_cstr));
1.12 parser 286: }
1.10 parser 287: static void _xslt(Request& r, const String& method_name, MethodParams *params) {
288: Pool& pool=r.pool();
1.26 parser 289: VDom& vdom=*static_cast<VDom *>(r.self);
1.10 parser 290:
1.12 parser 291: // params
292: if(params->size()>1) {
1.18 parser 293: Value& vparams=params->as_no_junction(1, "transform parameters parameter must not be code");
1.12 parser 294: if(vparams.is_defined())
295: if(Hash *params=vparams.get_hash())
1.26 parser 296: params->for_each(add_xslt_param, &vdom.transformer());
1.12 parser 297: else
298: PTHROW(0, 0,
299: &method_name,
1.18 parser 300: "transform parameters parameter must be hash");
1.12 parser 301: }
302:
1.10 parser 303: // source
1.26 parser 304: XalanParsedSource &parsed_source=vdom.get_parsed_source(pool, &method_name);
1.10 parser 305:
306: // stylesheet
1.20 parser 307: const String& stylesheet_file_name=params->as_string(0, "file name must not be code");
308: const String& stylesheet_filespec=r.absolute(stylesheet_file_name);
309: //_asm int 3;
310: Stylesheet_connection& connection=XSLT_stylesheet_manager->get_connection(stylesheet_filespec);
1.10 parser 311:
312: // target
1.26 parser 313: XalanDocument* target=vdom.parser_liaison().createDocument();
1.10 parser 314: XSLTResultTarget domResultTarget(target);
315:
316: // transform
1.26 parser 317: int error=vdom.transformer().transform(
1.20 parser 318: parsed_source,
319: &connection.stylesheet(),
320: domResultTarget);
321: connection.close();
1.10 parser 322: if(error)
323: PTHROW(0, 0,
1.20 parser 324: &stylesheet_file_name,
1.26 parser 325: vdom.transformer().getLastError());
1.10 parser 326:
327: // write out result
1.11 parser 328: VDom& result=*new(pool) VDom(pool);
329: result.set_document(*target);
330: r.write_no_lang(result);
1.10 parser 331: }
332:
1.2 parser 333: // constructor
334:
1.24 parser 335: MDom::MDom(Pool& apool) : MDnode(apool) {
1.4 parser 336: set_name(*NEW String(pool(), DOM_CLASS_NAME));
1.26 parser 337:
1.27 parser 338: // ^dom.save[some.xml]
339: // ^dom.save[some.xml;options hash]
340: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.26 parser 341:
1.27 parser 342: // ^dom.string[] <doc/>
1.26 parser 343: // ^dom.string[options hash] <doc/>
1.27 parser 344: add_native_method("string", Method::CT_DYNAMIC, _string, 0, 1);
1.26 parser 345:
1.27 parser 346: // ^dom.file[] file with "<doc/>"
1.26 parser 347: // ^dom.file[options hash] file with "<doc/>"
1.27 parser 348: add_native_method("file", Method::CT_DYNAMIC, _file, 0, 1);
1.16 parser 349:
350: // ^dom::set[<some>xml</some>]
351: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 1);
1.2 parser 352:
1.3 parser 353: // ^dom::load[some.xml]
1.2 parser 354: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.10 parser 355:
1.20 parser 356: // ^dom.xslt[stylesheet file_name]
357: // ^dom.xslt[stylesheet file_name;params hash]
1.12 parser 358: add_native_method("xslt", Method::CT_DYNAMIC, _xslt, 1, 2);
1.6 parser 359:
1.2 parser 360: }
361: // global variable
362:
363: Methoded *Dom_class;
364:
365: // creator
366:
1.33 ! parser 367: #endif
! 368:
1.2 parser 369: Methoded *MDom_create(Pool& pool) {
1.33 ! parser 370: return
! 371: #ifdef XML
! 372: Dom_class=new(pool) MDom(pool);
! 373: #else
! 374: 0
! 375: #endif
! 376: ;
1.2 parser 377: }
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