Ejemplo n.º 1
0
        /// <summary> Internal routine that actually does the parsing.  The caller
        /// can pass either an InputStream or file name.  If both are passed,
        /// the file name is preferred.
        /// </summary>
        internal Node ParseInternal(Stream input, string file, Stream Output, TidyMessageCollection messages)
        {
            Lexer  lexer;
            Node   document = null;
            Node   doctype;
            Out    o = new OutImpl();          /* normal output stream */
            PPrint pprint;

            /* ensure config is self-consistent */
            _options.Adjust();

            if (file != null)
            {
                input = new FileStream(file, FileMode.Open, FileAccess.Read);
            }
            else if (input == null)
            {
                input = Console.OpenStandardInput();
            }

            if (input != null)
            {
                lexer          = new Lexer(new ClsStreamInImpl(input, _options.CharEncoding, _options.TabSize), _options);
                lexer.messages = messages;

                /*
                 * store pointer to lexer in input stream
                 * to allow character encoding errors to be
                 * reported
                 */
                lexer.input.Lexer = lexer;

                /* Tidy doesn't alter the doctype for generic XML docs */
                if (_options.XmlTags)
                {
                    document = ParserImpl.parseXMLDocument(lexer);
                }
                else
                {
                    document = ParserImpl.parseDocument(lexer);

                    if (!document.CheckNodeIntegrity())
                    {
                        Report.BadTree(lexer);
                        return(null);
                    }

                    Clean cleaner = new Clean(_options.tt);

                    /* simplifies <b><b> ... </b> ...</b> etc. */
                    cleaner.NestedEmphasis(document);

                    /* cleans up <dir>indented text</dir> etc. */
                    cleaner.List2BQ(document);
                    cleaner.BQ2Div(document);

                    /* replaces i by em and b by strong */
                    if (_options.LogicalEmphasis)
                    {
                        cleaner.EmFromI(document);
                    }

                    if (_options.Word2000 && cleaner.IsWord2000(document, _options.tt))
                    {
                        /* prune Word2000's <![if ...]> ... <![endif]> */
                        cleaner.DropSections(lexer, document);

                        /* drop style & class attributes and empty p, span elements */
                        cleaner.CleanWord2000(lexer, document);
                    }

                    /* replaces presentational markup by style rules */
                    if (_options.MakeClean || _options.DropFontTags)
                    {
                        cleaner.CleanTree(lexer, document);
                    }

                    if (!document.CheckNodeIntegrity())
                    {
                        Report.BadTree(lexer);
                        return(null);
                    }
                    doctype = document.FindDocType();
                    if (document.Content != null)
                    {
                        if (_options.Xhtml)
                        {
                            lexer.SetXhtmlDocType(document);
                        }
                        else
                        {
                            lexer.FixDocType(document);
                        }

                        if (_options.TidyMark)
                        {
                            lexer.AddGenerator(document);
                        }
                    }

                    /* ensure presence of initial <?XML version="1.0"?> */
                    if (_options.XmlOut && _options.XmlPi)
                    {
                        lexer.FixXmlPI(document);
                    }

                    if (document.Content != null)
                    {
                        Report.ReportVersion(lexer, doctype);
                        Report.ReportNumWarnings(lexer);
                    }
                }

                // Try to close the InputStream but only if if we created it.

                if ((file != null) && (input != Console.OpenStandardOutput()))
                {
                    try
                    {
                        input.Close();
                    }
                    catch (IOException)
                    {
                    }
                }

                if (lexer.messages.Errors > 0)
                {
                    Report.NeedsAuthorIntervention(lexer);
                }

                o.State    = StreamIn.FSM_ASCII;
                o.Encoding = _options.CharEncoding;

                if (lexer.messages.Errors == 0)
                {
                    if (_options.BurstSlides)
                    {
                        Node body;

                        body = null;

                        /*
                         * remove doctype to avoid potential clash with
                         * markup introduced when bursting into slides
                         */
                        /* discard the document type */
                        doctype = document.FindDocType();

                        if (doctype != null)
                        {
                            Node.DiscardElement(doctype);
                        }

                        /* slides use transitional features */
                        lexer.versions |= HtmlVersion.Html40Loose;

                        /* and patch up doctype to match */
                        if (_options.Xhtml)
                        {
                            lexer.SetXhtmlDocType(document);
                        }
                        else
                        {
                            lexer.FixDocType(document);
                        }

                        /* find the body element which may be implicit */
                        body = document.FindBody(_options.tt);

                        if (body != null)
                        {
                            pprint = new PPrint(_options);
                            Report.ReportNumberOfSlides(lexer, pprint.CountSlides(body));
                            pprint.CreateSlides(lexer, document);
                        }
                        else
                        {
                            Report.MissingBody(lexer);
                        }
                    }
                    else if (Output != null)
                    {
                        pprint   = new PPrint(_options);
                        o.Output = Output;

                        if (_options.XmlTags)
                        {
                            pprint.PrintXmlTree(o, (short)0, 0, lexer, document);
                        }
                        else
                        {
                            pprint.PrintTree(o, (short)0, 0, lexer, document);
                        }

                        pprint.FlushLine(o, 0);
                    }
                }

                Report.ErrorSummary(lexer);
            }

            return(document);
        }