Annotation of parser3/src/classes/dom.C, revision 1.26
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: */
1.26 ! parser 8: static const char *RCSId="$Id: dom.C,v 1.25 2001/09/18 16:05:42 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"
1.20 parser 18: #include "pa_xslt_stylesheet_manager.h"
19: #include "pa_stylesheet_connection.h"
1.26 ! parser 20: #include "pa_vfile.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>
1.26 ! parser 28: #include <XMLSupport/FormatterToXML.hpp>
! 29: #include <XMLSupport/FormatterToHTML.hpp>
! 30: #include <XMLSupport/FormatterToText.hpp>
! 31: #include <XMLSupport/FormatterTreeWalker.hpp>
! 32: #include <PlatformSupport/XalanFileOutputStream.hpp>
! 33: #include <PlatformSupport/XalanOutputStreamPrintWriter.hpp>
! 34: #include <PlatformSupport/DOMStringPrintWriter.hpp>
1.6 parser 35:
1.2 parser 36: // defines
37:
1.4 parser 38: #define DOM_CLASS_NAME "dom"
1.2 parser 39:
1.26 ! 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:
1.24 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:
1.26 ! parser 64: class ParserStringXalanOutputStream: public XalanOutputStream {
! 65: public:
! 66:
! 67: explicit ParserStringXalanOutputStream(String& astring) : fstring(astring) {}
! 68:
! 69: protected: // XalanOutputStream
! 70:
! 71: virtual void writeData(const char *theBuffer, unsigned long theBufferLength) {
! 72: char *copy=(char *)fstring.malloc((size_t)theBufferLength);
! 73: memcpy(copy, theBuffer, (size_t)theBufferLength);
! 74: fstring.APPEND_CLEAN(copy, (size_t)theBufferLength, "dom", -1);
! 75: }
! 76:
! 77: virtual void doFlush() {}
! 78:
! 79: private:
! 80:
! 81: String& fstring;
! 82:
! 83: };
! 84:
! 85: static void create_optioned_listener(
! 86: const char *& content_type, const char *& charset, FormatterListener *& listener,
! 87: Pool& pool,
! 88: const String& method_name, MethodParams *params, int index, Writer& writer) {
! 89: charset=0;
! 90: const String *method=0;
! 91: XalanDOMString xalan_encoding;
! 92:
! 93: Value& voptions=params->as_no_junction(index, "options must not be code");
! 94: if(voptions.is_defined()) {
! 95: if(Hash *options=voptions.get_hash()) {
! 96: // $.method[xml|html|text]
! 97: if(Value *vmethod=static_cast<Value *>(options->get(*new(pool)
! 98: String(pool, DOM_OUTPUT_METHOD_OPTION_NAME))))
! 99: method=&vmethod->as_string();
! 100:
! 101: // $.encoding[windows-1251|...]
! 102: if(Value *vencoding=static_cast<Value *>(options->get(*new(pool)
! 103: String(pool, DOM_OUTPUT_ENCODING_OPTION_NAME)))) {
! 104: charset=vencoding->as_string().cstr();
! 105: xalan_encoding.append(charset, strlen(charset));
! 106: }
! 107: } else
! 108: PTHROW(0, 0,
! 109: &method_name,
! 110: "options must be hash");
! 111: }
! 112:
! 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
! 152: const String& file_name=params->as_string(1, "file name must not be code");
! 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,
! 164: pool, method_name, params, 0, writer);
! 165: FormatterTreeWalker treeWalker(*formatterListener);
! 166: treeWalker.traverse(&node); // Walk that node and produce the XML...
! 167: } catch(const XSLException& e) {
! 168: _throw(pool, &method_name, e);
! 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) {
! 193: _throw(pool, &method_name, e);
! 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) {
! 232: _throw(pool, &method_name, e);
! 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:
! 338: // ^dom.save[options hash;some.xml]
! 339: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
! 340:
! 341: // ^dom.string[options hash] <doc/>
! 342: add_native_method("string", Method::CT_DYNAMIC, _string, 1, 1);
! 343:
! 344: // ^dom.file[options hash] file with "<doc/>"
! 345: add_native_method("file", Method::CT_DYNAMIC, _file, 1, 1);
1.16 parser 346:
347: // ^dom::set[<some>xml</some>]
348: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 1);
1.2 parser 349:
1.3 parser 350: // ^dom::load[some.xml]
1.2 parser 351: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.10 parser 352:
1.20 parser 353: // ^dom.xslt[stylesheet file_name]
354: // ^dom.xslt[stylesheet file_name;params hash]
1.12 parser 355: add_native_method("xslt", Method::CT_DYNAMIC, _xslt, 1, 2);
1.6 parser 356:
1.2 parser 357: }
358: // global variable
359:
360: Methoded *Dom_class;
361:
362: // creator
363:
364: Methoded *MDom_create(Pool& pool) {
365: return Dom_class=new(pool) MDom(pool);
366: }
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