+++ /dev/null
-package net.sourceforge.phpdt.internal.ui.text;
-
-/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved.
- */
-
-import java.io.IOException;
-import java.io.PushbackReader;
-import java.io.Reader;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-
-import net.sourceforge.phpdt.internal.ui.PHPUIMessages;
-
-import org.eclipse.jface.text.TextPresentation;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.custom.StyleRange;
-
-/**
- * Reads the text contents from a reader of HTML contents and translates the
- * tags or cut them out.
- */
-public class HTML2TextReader extends SubstitutionTextReader {
-
- private static final String LINE_DELIM = System.getProperty(
- "line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-
- private static final String EMPTY_STRING = ""; //$NON-NLS-1$
-
- private static final Map fgEntityLookup;
-
- private static final Set fgTags;
-
- static {
-
- fgTags = new HashSet();
- fgTags.add("b"); //$NON-NLS-1$
- fgTags.add("br"); //$NON-NLS-1$
- fgTags.add("h5"); //$NON-NLS-1$
- fgTags.add("p"); //$NON-NLS-1$
- fgTags.add("dl"); //$NON-NLS-1$
- fgTags.add("dt"); //$NON-NLS-1$
- fgTags.add("dd"); //$NON-NLS-1$
- fgTags.add("li"); //$NON-NLS-1$
- fgTags.add("ul"); //$NON-NLS-1$
- fgTags.add("pre"); //$NON-NLS-1$
-
- fgEntityLookup = new HashMap(7);
- fgEntityLookup.put("lt", "<"); //$NON-NLS-1$ //$NON-NLS-2$
- fgEntityLookup.put("gt", ">"); //$NON-NLS-1$ //$NON-NLS-2$
- fgEntityLookup.put("nbsp", " "); //$NON-NLS-1$ //$NON-NLS-2$
- fgEntityLookup.put("amp", "&"); //$NON-NLS-1$ //$NON-NLS-2$
- fgEntityLookup.put("circ", "^"); //$NON-NLS-1$ //$NON-NLS-2$
- fgEntityLookup.put("tilde", "~"); //$NON-NLS-2$ //$NON-NLS-1$
- fgEntityLookup.put("quot", "\""); //$NON-NLS-1$ //$NON-NLS-2$
- }
-
- private int fCounter = 0;
-
- private TextPresentation fTextPresentation;
-
- private int fBold = 0;
-
- private int fStartOffset = -1;
-
- private boolean fInParagraph = false;
-
- private boolean fIsPreformattedText = false;
-
- /**
- * Transforms the html text from the reader to formatted text.
- *
- * @param presentation
- * If not <code>null</code>, formattings will be applied to
- * the presentation.
- */
- public HTML2TextReader(Reader reader, TextPresentation presentation) {
- super(new PushbackReader(reader));
- fTextPresentation = presentation;
- }
-
- public int read() throws IOException {
- int c = super.read();
- if (c != -1)
- ++fCounter;
- return c;
- }
-
- protected void startBold() {
- if (fBold == 0)
- fStartOffset = fCounter;
- ++fBold;
- }
-
- protected void startPreformattedText() {
- fIsPreformattedText = true;
- setSkipWhitespace(false);
- }
-
- protected void stopPreformattedText() {
- fIsPreformattedText = false;
- setSkipWhitespace(true);
- }
-
- protected void stopBold() {
- --fBold;
- if (fBold == 0) {
- if (fTextPresentation != null) {
- fTextPresentation.addStyleRange(new StyleRange(fStartOffset,
- fCounter - fStartOffset, null, null, SWT.BOLD));
- }
- fStartOffset = -1;
- }
- }
-
- /**
- * @see SubstitutionTextReader#computeSubstitution(char)
- */
- protected String computeSubstitution(int c) throws IOException {
-
- if (c == '<')
- return processHTMLTag();
- else if (c == '&')
- return processEntity();
- else if (fIsPreformattedText)
- return processPreformattedText(c);
-
- return null;
- }
-
- private String html2Text(String html) {
-
- String tag = html;
- if ('/' == tag.charAt(0))
- tag = tag.substring(1);
-
- if (!fgTags.contains(tag))
- return EMPTY_STRING;
-
- if ("pre".equals(html)) { //$NON-NLS-1$
- startPreformattedText();
- return EMPTY_STRING;
- }
-
- if ("/pre".equals(html)) { //$NON-NLS-1$
- stopPreformattedText();
- return EMPTY_STRING;
- }
-
- if (fIsPreformattedText)
- return EMPTY_STRING;
-
- if ("b".equals(html)) { //$NON-NLS-1$
- startBold();
- return EMPTY_STRING;
- }
-
- if ("h5".equals(html) || "dt".equals(html)) { //$NON-NLS-1$ //$NON-NLS-2$
- startBold();
- return EMPTY_STRING;
- }
-
- if ("dl".equals(html)) //$NON-NLS-1$
- return LINE_DELIM;
-
- if ("dd".equals(html)) //$NON-NLS-1$
- return "\t"; //$NON-NLS-1$
-
- if ("li".equals(html)) //$NON-NLS-1$
- return LINE_DELIM
- + "\t" + PHPUIMessages.getString("HTML2TextReader.dash"); //$NON-NLS-1$ //$NON-NLS-2$
-
- if ("/b".equals(html)) { //$NON-NLS-1$
- stopBold();
- return EMPTY_STRING;
- }
-
- if ("p".equals(html)) { //$NON-NLS-1$
- fInParagraph = true;
- return LINE_DELIM;
- }
-
- if ("br".equals(html)) //$NON-NLS-1$
- return LINE_DELIM;
-
- if ("/p".equals(html)) { //$NON-NLS-1$
- boolean inParagraph = fInParagraph;
- fInParagraph = false;
- return inParagraph ? EMPTY_STRING : LINE_DELIM;
- }
-
- if ("/h5".equals(html) || "/dt".equals(html)) { //$NON-NLS-1$ //$NON-NLS-2$
- stopBold();
- return LINE_DELIM;
- }
-
- if ("/dd".equals(html)) //$NON-NLS-1$
- return LINE_DELIM;
-
- return EMPTY_STRING;
- }
-
- /*
- * A '<' has been read. Process a html tag
- */
- private String processHTMLTag() throws IOException {
-
- StringBuffer buf = new StringBuffer();
- int ch;
- do {
-
- ch = nextChar();
-
- while (ch != -1 && ch != '>') {
- buf.append(Character.toLowerCase((char) ch));
- ch = nextChar();
- if (ch == '"') {
- buf.append(Character.toLowerCase((char) ch));
- ch = nextChar();
- while (ch != -1 && ch != '"') {
- buf.append(Character.toLowerCase((char) ch));
- ch = nextChar();
- }
- }
- if (ch == '<') {
- unread(ch);
- return '<' + buf.toString();
- }
- }
-
- if (ch == -1)
- return null;
-
- int tagLen = buf.length();
- // needs special treatment for comments
- if ((tagLen >= 3 && "!--".equals(buf.substring(0, 3))) //$NON-NLS-1$
- && !(tagLen >= 5 && "--!".equals(buf.substring(tagLen - 3)))) { //$NON-NLS-1$
- // unfinished comment
- buf.append(ch);
- } else {
- break;
- }
- } while (true);
-
- return html2Text(buf.toString());
- }
-
- private String processPreformattedText(int c) {
- if (c == '\r' || c == '\n')
- fCounter++;
- return null;
- }
-
- private void unread(int ch) throws IOException {
- ((PushbackReader) getReader()).unread(ch);
- }
-
- protected String entity2Text(String symbol) {
- if (symbol.length() > 1 && symbol.charAt(0) == '#') {
- int ch;
- try {
- if (symbol.charAt(1) == 'x') {
- ch = Integer.parseInt(symbol.substring(2), 16);
- } else {
- ch = Integer.parseInt(symbol.substring(1), 10);
- }
- return EMPTY_STRING + (char) ch;
- } catch (NumberFormatException e) {
- }
- } else {
- String str = (String) fgEntityLookup.get(symbol);
- if (str != null) {
- return str;
- }
- }
- return "&" + symbol; // not found //$NON-NLS-1$
- }
-
- /*
- * A '&' has been read. Process a entity
- */
- private String processEntity() throws IOException {
- StringBuffer buf = new StringBuffer();
- int ch = nextChar();
- while (Character.isLetterOrDigit((char) ch) || ch == '#') {
- buf.append((char) ch);
- ch = nextChar();
- }
-
- if (ch == ';')
- return entity2Text(buf.toString());
-
- buf.insert(0, '&');
- if (ch != -1)
- buf.append((char) ch);
- return buf.toString();
- }
-}
\ No newline at end of file
git://secure.phpeclipse.com / phpeclipse.git / blobdiff