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Diffstat (limited to 'bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived')
-rw-r--r--bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTML2TextReader.java304
-rw-r--r--bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTMLTextPresenter.java194
-rw-r--r--bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/LineBreakingReader.java124
-rw-r--r--bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SingleCharReader.java66
-rw-r--r--bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SubstitutionTextReader.java158
5 files changed, 0 insertions, 846 deletions
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTML2TextReader.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTML2TextReader.java
deleted file mode 100644
index 27ac8cb270..0000000000
--- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTML2TextReader.java
+++ /dev/null
@@ -1,304 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-
-package org.eclipse.wst.sse.ui.internal.derived;
-
-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 org.eclipse.jface.text.TextPresentation;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.custom.StyleRange;
-
-/*
- * Copied from org.eclipse.jdt.internal.ui.text.HTML2TextReader Modifications
- * were made to add br/ tag and fix warnings
- */
-/**
- * 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 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("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 org.eclipse.jdt.internal.ui.text.SubstitutionTextReader#computeSubstitution(int)
- */
- 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) {
-
- if (html == null || html.length() == 0)
- return EMPTY_STRING;
-
- 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" + "- "; //$NON-NLS-1$ //$NON-NLS-2$
-
- 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) || "br/".equals(html)) //$NON-NLS-1$ //$NON-NLS-2$
- 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 - 2)))) { //$NON-NLS-1$
- // 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) {
- // log problem?
- }
- } 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();
- }
-}
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTMLTextPresenter.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTMLTextPresenter.java
deleted file mode 100644
index 86fa284244..0000000000
--- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/HTMLTextPresenter.java
+++ /dev/null
@@ -1,194 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-package org.eclipse.wst.sse.ui.internal.derived;
-
-import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
-import java.util.Iterator;
-
-import org.eclipse.jface.text.DefaultInformationControl;
-import org.eclipse.jface.text.Region;
-import org.eclipse.jface.text.TextPresentation;
-import org.eclipse.swt.custom.StyleRange;
-import org.eclipse.swt.graphics.GC;
-import org.eclipse.swt.widgets.Display;
-import org.eclipse.wst.sse.ui.internal.Logger;
-
-/*
- * Copied from org.eclipse.jdt.internal.ui.text.HTMLTextPresenter
- * Modifications were made to use own Logger to log exception, and the
- * ellipses constant
- */
-public class HTMLTextPresenter implements DefaultInformationControl.IInformationPresenter {
- private static final String ELLIPSES = "..."; //$NON-NLS-1$
- private static final String LINE_DELIM = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-
- private int fCounter;
- private boolean fEnforceUpperLineLimit;
-
- public HTMLTextPresenter(boolean enforceUpperLineLimit) {
- super();
- fEnforceUpperLineLimit = enforceUpperLineLimit;
- }
-
- public HTMLTextPresenter() {
- this(true);
- }
-
- protected Reader createReader(String hoverInfo, TextPresentation presentation) {
- return new HTML2TextReader(new StringReader(hoverInfo), presentation);
- }
-
- protected void adaptTextPresentation(TextPresentation presentation, int offset, int insertLength) {
-
- int yoursStart = offset;
- int yoursEnd = offset + insertLength - 1;
- yoursEnd = Math.max(yoursStart, yoursEnd);
-
- Iterator e = presentation.getAllStyleRangeIterator();
- while (e.hasNext()) {
-
- StyleRange range = (StyleRange) e.next();
-
- int myStart = range.start;
- int myEnd = range.start + range.length - 1;
- myEnd = Math.max(myStart, myEnd);
-
- if (myEnd < yoursStart)
- continue;
-
- if (myStart < yoursStart)
- range.length += insertLength;
- else
- range.start += insertLength;
- }
- }
-
- private void append(StringBuffer buffer, String string, TextPresentation presentation) {
-
- int length = string.length();
- buffer.append(string);
-
- if (presentation != null)
- adaptTextPresentation(presentation, fCounter, length);
-
- fCounter += length;
- }
-
- private String getIndent(String line) {
- int length = line.length();
-
- int i = 0;
- while (i < length && Character.isWhitespace(line.charAt(i)))
- ++i;
-
- return (i == length ? line : line.substring(0, i)) + " "; //$NON-NLS-1$
- }
-
- /*
- * @see IHoverInformationPresenter#updatePresentation(Display display,
- * String, TextPresentation, int, int)
- */
- public String updatePresentation(Display display, String hoverInfo, TextPresentation presentation, int maxWidth, int maxHeight) {
-
- if (hoverInfo == null)
- return null;
-
- GC gc = new GC(display);
- try {
-
- StringBuffer buffer = new StringBuffer();
- int maxNumberOfLines = Math.round(maxHeight / gc.getFontMetrics().getHeight());
-
- fCounter = 0;
- LineBreakingReader reader = new LineBreakingReader(createReader(hoverInfo, presentation), gc, maxWidth);
-
- boolean lastLineFormatted = false;
- String lastLineIndent = null;
-
- String line = reader.readLine();
- boolean lineFormatted = reader.isFormattedLine();
- boolean firstLineProcessed = false;
-
- while (line != null) {
-
- if (fEnforceUpperLineLimit && maxNumberOfLines <= 0)
- break;
-
- if (firstLineProcessed) {
- if (!lastLineFormatted)
- append(buffer, LINE_DELIM, null);
- else {
- append(buffer, LINE_DELIM, presentation);
- if (lastLineIndent != null)
- append(buffer, lastLineIndent, presentation);
- }
- }
-
- append(buffer, line, null);
- firstLineProcessed = true;
-
- lastLineFormatted = lineFormatted;
- if (!lineFormatted)
- lastLineIndent = null;
- else if (lastLineIndent == null)
- lastLineIndent = getIndent(line);
-
- line = reader.readLine();
- lineFormatted = reader.isFormattedLine();
-
- maxNumberOfLines--;
- }
-
- if (line != null && buffer.length() > 0) {
- append(buffer, LINE_DELIM, lineFormatted ? presentation : null);
- append(buffer, ELLIPSES, presentation);
- }
-
- return trim(buffer, presentation);
-
- } catch (IOException e) {
- Logger.log(Logger.WARNING_DEBUG, e.getMessage(), e);
- return null;
-
- } finally {
- gc.dispose();
- }
- }
-
- private String trim(StringBuffer buffer, TextPresentation presentation) {
-
- int length = buffer.length();
-
- int end = length - 1;
- while (end >= 0 && Character.isWhitespace(buffer.charAt(end)))
- --end;
-
- if (end == -1)
- return ""; //$NON-NLS-1$
-
- if (end < length - 1)
- buffer.delete(end + 1, length);
- else
- end = length;
-
- int start = 0;
- while (start < end && Character.isWhitespace(buffer.charAt(start)))
- ++start;
-
- buffer.delete(0, start);
- presentation.setResultWindow(new Region(start, buffer.length()));
- return buffer.toString();
- }
-}
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/LineBreakingReader.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/LineBreakingReader.java
deleted file mode 100644
index cea5449f96..0000000000
--- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/LineBreakingReader.java
+++ /dev/null
@@ -1,124 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-package org.eclipse.wst.sse.ui.internal.derived;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.Reader;
-import com.ibm.icu.text.BreakIterator;
-
-import org.eclipse.swt.graphics.GC;
-
-/**
- * Copied from org.eclipse.jdt.internal.ui.text.LineBreakingReader.
- * Modifications were made to fix warnings.
- */
-/*
- * Not a real reader. Could change if requested
- */
-public class LineBreakingReader {
- private GC fGC;
-
- private String fLine;
-
- private BreakIterator fLineBreakIterator;
- private int fMaxWidth;
- private int fOffset;
-
-
- private BufferedReader fReader;
-
- /**
- * Creates a reader that breaks an input text to fit in a given width.
- *
- * @param reader
- * Reader of the input text
- * @param gc
- * The graphic context that defines the currently used font
- * sizes
- * @param maxLineWidth
- * The max width (pixes) where the text has to fit in
- */
- public LineBreakingReader(Reader reader, GC gc, int maxLineWidth) {
- fReader = new BufferedReader(reader);
- fGC = gc;
- fMaxWidth = maxLineWidth;
- fOffset = 0;
- fLine = null;
- fLineBreakIterator = BreakIterator.getLineInstance();
- }
-
- private int findNextBreakOffset(int currOffset) {
- int currWidth = 0;
- int nextOffset = fLineBreakIterator.following(currOffset);
- while (nextOffset != BreakIterator.DONE) {
- String word = fLine.substring(currOffset, nextOffset);
- int wordWidth = fGC.textExtent(word).x;
- int nextWidth = wordWidth + currWidth;
- if (nextWidth > fMaxWidth) {
- if (currWidth > 0) {
- return currOffset;
- }
- return nextOffset;
- }
- currWidth = nextWidth;
- currOffset = nextOffset;
- nextOffset = fLineBreakIterator.next();
- }
- return nextOffset;
- }
-
- private int findWordBegin(int idx) {
- while (idx < fLine.length() && Character.isWhitespace(fLine.charAt(idx))) {
- idx++;
- }
- return idx;
- }
-
- public boolean isFormattedLine() {
- return fLine != null;
- }
-
- /**
- * Reads the next line. The lengths of the line will not exceed the gived
- * maximum width.
- */
- public String readLine() throws IOException {
- if (fLine == null) {
- String line = fReader.readLine();
- if (line == null)
- return null;
-
- int lineLen = fGC.textExtent(line).x;
- if (lineLen < fMaxWidth) {
- return line;
- }
- fLine = line;
- fLineBreakIterator.setText(line);
- fOffset = 0;
- }
- int breakOffset = findNextBreakOffset(fOffset);
- String res;
- if (breakOffset != BreakIterator.DONE) {
- res = fLine.substring(fOffset, breakOffset);
- fOffset = findWordBegin(breakOffset);
- if (fOffset == fLine.length()) {
- fLine = null;
- }
- } else {
- res = fLine.substring(fOffset);
- fLine = null;
- }
- return res;
- }
-}
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SingleCharReader.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SingleCharReader.java
deleted file mode 100644
index 56945ff660..0000000000
--- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SingleCharReader.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-package org.eclipse.wst.sse.ui.internal.derived;
-
-import java.io.IOException;
-import java.io.Reader;
-
-/*
- * Copied from org.eclipse.jdt.internal.corext.javadoc.SingleCharReader.
- * Modification was made to fix statement unnecessarily nested within else
- * clause warning in read(..).
- */
-public abstract class SingleCharReader extends Reader {
-
- /**
- * @see Reader#read()
- */
- public abstract int read() throws IOException;
-
- /**
- * @see Reader#read(char[],int,int)
- */
- public int read(char cbuf[], int off, int len) throws IOException {
- int end = off + len;
- for (int i = off; i < end; i++) {
- int ch = read();
- if (ch == -1) {
- if (i == off) {
- return -1;
- }
- return i - off;
- }
- cbuf[i] = (char) ch;
- }
- return len;
- }
-
- /**
- * @see Reader#ready()
- */
- public boolean ready() throws IOException {
- return true;
- }
-
- /**
- * Gets the content as a String
- */
- public String getString() throws IOException {
- StringBuffer buf = new StringBuffer();
- int ch;
- while ((ch = read()) != -1) {
- buf.append((char) ch);
- }
- return buf.toString();
- }
-}
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SubstitutionTextReader.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SubstitutionTextReader.java
deleted file mode 100644
index 4d2a78f252..0000000000
--- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/derived/SubstitutionTextReader.java
+++ /dev/null
@@ -1,158 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-package org.eclipse.wst.sse.ui.internal.derived;
-
-import java.io.IOException;
-import java.io.Reader;
-
-/*
- * Copied from org.eclipse.jdt.internal.ui.text.SubstitutionTextReader.
- * Modifications were made to read() to allow whitespaces and fixed statement
- * unnecessarily nested within else clause warning in nextChar()
- */
-/**
- * Reads the text contents from a reader and computes for each character a
- * potential substitution. The substitution may eat more characters than only
- * the one passed into the computation routine.
- */
-public abstract class SubstitutionTextReader extends SingleCharReader {
-
- protected static final String LINE_DELIM = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-
- private Reader fReader;
- protected boolean fWasWhiteSpace;
- private int fCharAfterWhiteSpace;
-
- /**
- * Tells whether white space characters are skipped.
- */
- private boolean fSkipWhiteSpace = true;
-
- private boolean fReadFromBuffer;
- private StringBuffer fBuffer;
- private int fIndex;
-
-
- protected SubstitutionTextReader(Reader reader) {
- fReader = reader;
- fBuffer = new StringBuffer();
- fIndex = 0;
- fReadFromBuffer = false;
- fCharAfterWhiteSpace = -1;
- fWasWhiteSpace = true;
- }
-
- /**
- * Implement to compute the substitution for the given character and if
- * necessary subsequent characters. Use <code>nextChar</code> to read
- * subsequent characters.
- */
- protected abstract String computeSubstitution(int c) throws IOException;
-
- /**
- * Returns the internal reader.
- */
- protected Reader getReader() {
- return fReader;
- }
-
- /**
- * Returns the next character.
- */
- protected int nextChar() throws IOException {
- fReadFromBuffer = (fBuffer.length() > 0);
- if (fReadFromBuffer) {
- char ch = fBuffer.charAt(fIndex++);
- if (fIndex >= fBuffer.length()) {
- fBuffer.setLength(0);
- fIndex = 0;
- }
- return ch;
- }
- int ch = fCharAfterWhiteSpace;
- if (ch == -1) {
- ch = fReader.read();
- }
- if (fSkipWhiteSpace && Character.isWhitespace((char) ch)) {
- do {
- ch = fReader.read();
- } while (Character.isWhitespace((char) ch));
- if (ch != -1) {
- fCharAfterWhiteSpace = ch;
- return ' ';
- }
- } else {
- fCharAfterWhiteSpace = -1;
- }
- return ch;
- }
-
- /**
- * @see Reader#read()
- */
- public int read() throws IOException {
- int c;
- do {
-
- c = nextChar();
- while (!fReadFromBuffer) {
- String s = computeSubstitution(c);
- if (s == null)
- break;
- if (s.length() > 0)
- fBuffer.insert(0, s);
- c = nextChar();
- }
-
- } while (fSkipWhiteSpace && fWasWhiteSpace && ((c == ' ') && !fReadFromBuffer));
- /*
- * SSE: For above and below check, if whitespace is read from buffer,
- * do not skip
- */
- fWasWhiteSpace = ((c == ' ' && !fReadFromBuffer) || c == '\r' || c == '\n');
- return c;
- }
-
- /**
- * @see Reader#ready()
- */
- public boolean ready() throws IOException {
- return fReader.ready();
- }
-
- /**
- * @see Reader#close()
- */
- public void close() throws IOException {
- fReader.close();
- }
-
- /**
- * @see Reader#reset()
- */
- public void reset() throws IOException {
- fReader.reset();
- fWasWhiteSpace = true;
- fCharAfterWhiteSpace = -1;
- fBuffer.setLength(0);
- fIndex = 0;
- }
-
- protected final void setSkipWhitespace(boolean state) {
- fSkipWhiteSpace = state;
- }
-
- protected final boolean isSkippingWhitespace() {
- return fSkipWhiteSpace;
- }
-}

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