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 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.
+ * 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 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 = new HashSet();
fgTags.add("b"); //$NON-NLS-1$
fgTags.add("br"); //$NON-NLS-1$
fgTags.add("h5"); //$NON-NLS-1$
fgTags.add("li"); //$NON-NLS-1$
fgTags.add("ul"); //$NON-NLS-1$
fgTags.add("pre"); //$NON-NLS-1$
-
- fgEntityLookup= new HashMap(7);
+
+ fgEntityLookup = 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", "\""); //$NON-NLS-1$ //$NON-NLS-2$
+ fgEntityLookup.put("quot", "\""); //$NON-NLS-1$ //$NON-NLS-2$
}
-
- private int fCounter= 0;
+
+ private int fCounter = 0;
+
private TextPresentation fTextPresentation;
- private int fBold= 0;
- private int fStartOffset= -1;
- private boolean fInParagraph= false;
- private boolean fIsPreformattedText= false;
-
+
+ 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.
- */
+ *
+ * @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;
+ fTextPresentation = presentation;
}
-
+
public int read() throws IOException {
- int c= super.read();
+ int c = super.read();
if (c != -1)
- ++ fCounter;
+ ++fCounter;
return c;
}
-
+
protected void startBold() {
if (fBold == 0)
- fStartOffset= fCounter;
- ++ fBold;
+ fStartOffset = fCounter;
+ ++fBold;
}
protected void startPreformattedText() {
- fIsPreformattedText= true;
+ fIsPreformattedText = true;
setSkipWhitespace(false);
}
protected void stopPreformattedText() {
- fIsPreformattedText= false;
+ fIsPreformattedText = false;
setSkipWhitespace(true);
}
-
+
protected void stopBold() {
- -- fBold;
+ --fBold;
if (fBold == 0) {
if (fTextPresentation != null) {
- fTextPresentation.addStyleRange(new StyleRange(fStartOffset, fCounter - fStartOffset, null, null, SWT.BOLD));
+ fTextPresentation.addStyleRange(new StyleRange(fStartOffset,
+ fCounter - fStartOffset, null, null, SWT.BOLD));
}
- fStartOffset= -1;
+ fStartOffset = -1;
}
}
-
+
/**
* @see SubstitutionTextReader#computeSubstitution(char)
*/
protected String computeSubstitution(int c) throws IOException {
-
+
if (c == '<')
- return processHTMLTag();
+ return processHTMLTag();
else if (c == '&')
return processEntity();
else if (fIsPreformattedText)
return processPreformattedText(c);
-
+
return null;
}
private String html2Text(String html) {
-
- String tag= html;
+
+ String tag = html;
if ('/' == tag.charAt(0))
- tag= tag.substring(1);
-
+ tag = tag.substring(1);
+
if (!fgTags.contains(tag))
return EMPTY_STRING;
-
if ("pre".equals(html)) { //$NON-NLS-1$
startPreformattedText();
return EMPTY_STRING;
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"); //$NON-NLS-1$ //$NON-NLS-2$
-
+ 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;
+ 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;
+
+ 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();
+
+ StringBuffer buf = new StringBuffer();
int ch;
- do {
-
- ch= nextChar();
-
+ do {
+
+ ch = nextChar();
+
while (ch != -1 && ch != '>') {
buf.append(Character.toLowerCase((char) ch));
- ch= nextChar();
- if (ch == '"'){
+ ch = nextChar();
+ if (ch == '"') {
buf.append(Character.toLowerCase((char) ch));
- ch= nextChar();
- while (ch != -1 && ch != '"'){
+ ch = nextChar();
+ while (ch != -1 && ch != '"') {
buf.append(Character.toLowerCase((char) ch));
- ch= nextChar();
- }
+ ch = nextChar();
+ }
}
- if (ch == '<'){
+ if (ch == '<') {
unread(ch);
return '<' + buf.toString();
- }
+ }
}
-
+
if (ch == -1)
return null;
-
- int tagLen= buf.length();
- // needs special treatment for comments
+
+ 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)))) { //$NON-NLS-1$
+ && !(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')
+ 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);
+ ch = Integer.parseInt(symbol.substring(2), 16);
} else {
- ch= Integer.parseInt(symbol.substring(1), 10);
+ ch = Integer.parseInt(symbol.substring(1), 10);
}
- return EMPTY_STRING + (char)ch;
+ return EMPTY_STRING + (char) ch;
} catch (NumberFormatException e) {
}
} else {
- String str= (String) fgEntityLookup.get(symbol);
+ 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 == '#') {
+ StringBuffer buf = new StringBuffer();
+ int ch = nextChar();
+ while (Character.isLetterOrDigit((char) ch) || ch == '#') {
buf.append((char) ch);
- ch= nextChar();
+ ch = nextChar();
}
-
- if (ch == ';')
+
+ if (ch == ';')
return entity2Text(buf.toString());
-
+
buf.insert(0, '&');
if (ch != -1)
buf.append((char) ch);
git://git.phpeclipse.com / phpeclipse.git / blobdiff