Example usage for org.eclipse.jdt.core IBuffer getCharacters

Introduction

In this page you can find the example usage for org.eclipse.jdt.core IBuffer getCharacters.

Prototype

public char[] getCharacters();

Source Link

Document

Returns the contents of this buffer as a character array, or null if the buffer has not been initialized.

Usage

From source file:com.android.ide.eclipse.adt.internal.refactorings.extractstring.ExtractStringRefactoring.java

License:Open Source License

/**
 * Try to find the selected Java element in the compilation unit.
 *
 * If selection matches a string literal, capture it, otherwise add a fatal error
 * to the status.//w w w  .  j  a  v  a 2 s .co m
 *
 * On success, advance the monitor by 3.
 * Returns status.isOK().
 */
private boolean findSelectionInJavaUnit(ICompilationUnit unit, RefactoringStatus status,
        IProgressMonitor monitor) {
    try {
        IBuffer buffer = unit.getBuffer();

        IScanner scanner = ToolFactory.createScanner(false, //tokenizeComments
                false, //tokenizeWhiteSpace
                false, //assertMode
                false //recordLineSeparator
        );
        scanner.setSource(buffer.getCharacters());
        monitor.worked(1);

        for (int token = scanner.getNextToken(); token != ITerminalSymbols.TokenNameEOF; token = scanner
                .getNextToken()) {
            if (scanner.getCurrentTokenStartPosition() <= mSelectionStart
                    && scanner.getCurrentTokenEndPosition() >= mSelectionEnd) {
                // found the token, but only keep if the right type
                if (token == ITerminalSymbols.TokenNameStringLiteral) {
                    mTokenString = new String(scanner.getCurrentTokenSource());
                }
                break;
            } else if (scanner.getCurrentTokenStartPosition() > mSelectionEnd) {
                // scanner is past the selection, abort.
                break;
            }
        }
    } catch (JavaModelException e1) {
        // Error in unit.getBuffer. Ignore.
    } catch (InvalidInputException e2) {
        // Error in scanner.getNextToken. Ignore.
    } finally {
        monitor.worked(1);
    }

    if (mTokenString != null) {
        // As a literal string, the token should have surrounding quotes. Remove them.
        // Note: unquoteAttrValue technically removes either " or ' paired quotes, whereas
        // the Java token should only have " quotes. Since we know the type to be a string
        // literal, there should be no confusion here.
        mTokenString = unquoteAttrValue(mTokenString);

        // We need a non-empty string literal
        if (mTokenString.length() == 0) {
            mTokenString = null;
        }
    }

    if (mTokenString == null) {
        status.addFatalError("Please select a Java string literal.");
    }

    monitor.worked(1);
    return status.isOK();
}

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From source file:com.android.ide.eclipse.adt.refactorings.extractstring.ExtractStringRefactoring.java

License:Open Source License

/**
 * Try to find the selected Java element in the compilation unit.
 * /*from   w  w  w.j  a  v a 2s.  c  om*/
 * If selection matches a string literal, capture it, otherwise add a fatal error
 * to the status.
 * 
 * On success, advance the monitor by 3.
 */
private boolean findSelectionInJavaUnit(ICompilationUnit unit, RefactoringStatus status,
        IProgressMonitor monitor) {
    try {
        IBuffer buffer = unit.getBuffer();

        IScanner scanner = ToolFactory.createScanner(false, //tokenizeComments
                false, //tokenizeWhiteSpace
                false, //assertMode
                false //recordLineSeparator
        );
        scanner.setSource(buffer.getCharacters());
        monitor.worked(1);

        for (int token = scanner.getNextToken(); token != ITerminalSymbols.TokenNameEOF; token = scanner
                .getNextToken()) {
            if (scanner.getCurrentTokenStartPosition() <= mSelectionStart
                    && scanner.getCurrentTokenEndPosition() >= mSelectionEnd) {
                // found the token, but only keep of the right type
                if (token == ITerminalSymbols.TokenNameStringLiteral) {
                    mTokenString = new String(scanner.getCurrentTokenSource());
                }
                break;
            } else if (scanner.getCurrentTokenStartPosition() > mSelectionEnd) {
                // scanner is past the selection, abort.
                break;
            }
        }
    } catch (JavaModelException e1) {
        // Error in unit.getBuffer. Ignore.
    } catch (InvalidInputException e2) {
        // Error in scanner.getNextToken. Ignore.
    } finally {
        monitor.worked(1);
    }

    if (mTokenString != null) {
        // As a literal string, the token should have surrounding quotes. Remove them.
        int len = mTokenString.length();
        if (len > 0 && mTokenString.charAt(0) == '"' && mTokenString.charAt(len - 1) == '"') {
            mTokenString = mTokenString.substring(1, len - 1);
        }
        // We need a non-empty string literal
        if (mTokenString.length() == 0) {
            mTokenString = null;
        }
    }

    if (mTokenString == null) {
        status.addFatalError("Please select a Java string literal.");
    }

    monitor.worked(1);
    return status.isOK();
}

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From source file:com.codenvy.ide.ext.java.server.internal.core.ClassFile.java

License:Open Source License

/** Loads the buffer via SourceMapper, and maps it in SourceMapper */
private IBuffer mapSource(SourceMapper mapper, IBinaryType info, IClassFile bufferOwner) {
    char[] contents = mapper.findSource(getType(), info);
    if (contents != null) {
        // create buffer
        IBuffer buffer = BufferManager.createBuffer(bufferOwner);
        if (buffer == null)
            return null;
        BufferManager bufManager = getBufferManager();
        bufManager.addBuffer(buffer);/*from  w  w  w.j ava 2s  .com*/

        // set the buffer source
        if (buffer.getCharacters() == null) {
            buffer.setContents(contents);
        }

        // listen to buffer changes
        buffer.addBufferChangedListener(this);

        // do the source mapping
        mapper.mapSource(getOuterMostEnclosingType(), contents, info);

        return buffer;
    } else {
        // create buffer
        IBuffer buffer = BufferManager.createNullBuffer(bufferOwner);
        if (buffer == null)
            return null;
        BufferManager bufManager = getBufferManager();
        bufManager.addBuffer(buffer);

        // listen to buffer changes
        buffer.addBufferChangedListener(this);
        return buffer;
    }
}

---

From source file:com.codenvy.ide.ext.java.server.internal.core.CompilationUnit.java

License:Open Source License

/**
 * @see org.eclipse.jdt.internal.compiler.env.ICompilationUnit#getContents()
 *///  w w  w  .jav  a2s .  c o m
public char[] getContents() {
    IBuffer buffer = getBufferManager().getBuffer(this);
    if (buffer == null) {
        // no need to force opening of CU to get the content
        // also this cannot be a working copy, as its buffer is never closed while the working copy is alive
        File file = resource();
        // Get encoding from file
        String encoding;
        encoding = "UTF-8"; //file.getCharset();
        try {
            return Util.getResourceContentsAsCharArray(file, encoding);
        } catch (JavaModelException e) {
            if (manager.abortOnMissingSource.get() == Boolean.TRUE) {
                IOException ioException = e.getJavaModelStatus()
                        .getCode() == IJavaModelStatusConstants.IO_EXCEPTION ? (IOException) e.getException()
                                : new IOException(e.getMessage());
                throw new AbortCompilationUnit(null, ioException, encoding);
            } else {
                Util.log(e, Messages.bind(Messages.file_notFound, file.getAbsolutePath()));
            }
            return CharOperation.NO_CHAR;
        }
    }
    char[] contents = buffer.getCharacters();
    if (contents == null) { // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=129814
        if (manager.abortOnMissingSource.get() == Boolean.TRUE) {
            IOException ioException = new IOException(Messages.buffer_closed);
            IFile file = (IFile) getResource();
            // Get encoding from file
            String encoding;
            try {
                encoding = file.getCharset();
            } catch (CoreException ce) {
                // do not use any encoding
                encoding = null;
            }
            throw new AbortCompilationUnit(null, ioException, encoding);
        }
        return CharOperation.NO_CHAR;
    }
    return contents;
}

---

From source file:com.codenvy.ide.ext.java.server.internal.core.CompilationUnit.java

License:Open Source License

/**
 * @see Openable#openBuffer(org.eclipse.core.runtime.IProgressMonitor, Object)
 *//*from  ww  w.  j  av a2 s . c o m*/
protected IBuffer openBuffer(IProgressMonitor pm, Object info) throws JavaModelException {

    // create buffer
    BufferManager bufManager = getBufferManager();
    boolean isWorkingCopy = isWorkingCopy();
    IBuffer buffer = isWorkingCopy ? this.owner.createBuffer(this) : BufferManager.createBuffer(this);
    if (buffer == null)
        return null;

    ICompilationUnit original = null;
    boolean mustSetToOriginalContent = false;
    if (isWorkingCopy) {
        // ensure that isOpen() is called outside the bufManager synchronized block
        // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=237772
        mustSetToOriginalContent = !isPrimary()
                && (original = new CompilationUnit((PackageFragment) getParent(), manager, getElementName(),
                        DefaultWorkingCopyOwner.PRIMARY)).isOpen();
    }

    // synchronize to ensure that 2 threads are not putting 2 different buffers at the same time
    // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=146331
    synchronized (bufManager) {
        IBuffer existingBuffer = bufManager.getBuffer(this);
        if (existingBuffer != null)
            return existingBuffer;

        // set the buffer source
        if (buffer.getCharacters() == null) {
            if (isWorkingCopy) {
                if (mustSetToOriginalContent) {
                    buffer.setContents(original.getSource());
                } else {
                    File file = resource();
                    if (file == null || !file.exists()) {
                        // initialize buffer with empty contents
                        buffer.setContents(CharOperation.NO_CHAR);
                    } else {
                        buffer.setContents(Util.getResourceContentsAsCharArray(file));
                    }
                }
            } else {
                File file = resource();
                if (file == null || !file.exists())
                    throw newNotPresentException();
                buffer.setContents(Util.getResourceContentsAsCharArray(file));
            }
        }

        // add buffer to buffer cache
        // note this may cause existing buffers to be removed from the buffer cache, but only primary compilation unit's buffer
        // can be closed, thus no call to a client's IBuffer#close() can be done in this synchronized block.
        bufManager.addBuffer(buffer);

        // listen to buffer changes
        buffer.addBufferChangedListener(this);
    }
    return buffer;
}

---

From source file:com.github.parzonka.ccms.engine.SortElementsOperation.java

License:Open Source License

/**
 * @see org.eclipse.jdt.internal.core.JavaModelOperation#executeOperation()
 *//*  w w  w. ja v a  2  s  .  co m*/
@Override
protected void executeOperation() throws JavaModelException {
    try {
        beginTask(Messages.operation_sortelements, getMainAmountOfWork());
        final CompilationUnit copy = (CompilationUnit) this.elementsToProcess[0];
        final ICompilationUnit unit = copy.getPrimary();
        final IBuffer buffer = copy.getBuffer();
        if (buffer == null) {
            return;
        }
        final char[] bufferContents = buffer.getCharacters();
        final String result = processElement(unit, bufferContents);
        if (!CharOperation.equals(result.toCharArray(), bufferContents)) {
            copy.getBuffer().setContents(result);
        }
        worked(1);
    } finally {
        done();
    }
}

---

From source file:org.codehaus.jdt.groovy.model.GroovyClassFileWorkingCopy.java

License:Open Source License

public char[] getContents() {
    try {//  ww w  .  j  a va2s  .  c o m
        IBuffer buffer = getBuffer();
        if (buffer == null)
            return CharOperation.NO_CHAR;
        char[] characters = buffer.getCharacters();
        if (characters == null)
            return CharOperation.NO_CHAR;
        return characters;
    } catch (JavaModelException e) {
        return CharOperation.NO_CHAR;
    }
}

---

From source file:org.codehaus.jdt.groovy.model.GroovyClassFileWorkingCopy.java

License:Open Source License

/**
 * @see Openable#openBuffer(IProgressMonitor, Object)
 *///from  w w  w. java2s. co  m
protected IBuffer openBuffer(IProgressMonitor pm, Object info) throws JavaModelException {

    // create buffer
    IBuffer buffer = this.owner.createBuffer(this);
    if (buffer == null)
        return null;

    // set the buffer source
    if (buffer.getCharacters() == null) {
        IBuffer classFileBuffer = this.classFile.getBuffer();
        if (classFileBuffer != null) {
            buffer.setContents(classFileBuffer.getCharacters());
        } else {
            // Disassemble
            IClassFileReader reader = ToolFactory.createDefaultClassFileReader(this.classFile,
                    IClassFileReader.ALL);
            Disassembler disassembler = new Disassembler();
            String contents = disassembler.disassemble(reader, Util.getLineSeparator("", getJavaProject()), //$NON-NLS-1$
                    ClassFileBytesDisassembler.WORKING_COPY);
            buffer.setContents(contents);
        }
    }

    // add buffer to buffer cache
    BufferManager bufManager = getBufferManager();

    // GROOVY Change access to private member
    // old
    // bufManager.addBuffer(buffer);
    // new
    if (buffer.getContents() != null) {
        ReflectionUtils.executePrivateMethod(BufferManager.class, "addBuffer", new Class<?>[] { IBuffer.class }, //$NON-NLS-1$
                bufManager, new Object[] { buffer });
    }
    // GROOVY End

    // listen to buffer changes
    buffer.addBufferChangedListener(this);

    return buffer;
}

---

From source file:org.eclipse.ajdt.core.javaelements.AJCompilationUnit.java

License:Open Source License

/**
 * @see org.eclipse.jdt.internal.compiler.env.ICompilationUnit#getContents()
 *///w  w  w  .ja  va  2  s .c om
public char[] getContents() {
    try {
        IBuffer buffer = this.getBuffer();
        return buffer == null ? CharOperation.NO_CHAR : buffer.getCharacters();
    } catch (JavaModelException e) {
        AspectJPlugin.getDefault().getLog().log(e.getStatus());
        return CharOperation.NO_CHAR;
    }
}

---

From source file:org.eclipse.ajdt.internal.ui.editor.CompilationUnitAnnotationModelWrapper.java

License:Open Source License

public void beginReporting() {
    if (delegate != null) {
        ((IProblemRequestor) delegate).beginReporting();

        IJavaProject project = unit.getJavaProject();

        AJCompilationUnitStructureRequestor requestor = new AJCompilationUnitStructureRequestor(unit,
                new AJCompilationUnitInfo(), new HashMap());
        JavaModelManager.PerWorkingCopyInfo perWorkingCopyInfo = ((CompilationUnit) unit)
                .getPerWorkingCopyInfo();
        boolean computeProblems = JavaProject.hasJavaNature(project.getProject()) && perWorkingCopyInfo != null
                && perWorkingCopyInfo.isActive();
        IProblemFactory problemFactory = new DefaultProblemFactory();
        Map options = project.getOptions(true);
        IBuffer buffer;
        try {/* www .ja v a  2s  .c  om*/
            buffer = unit.getBuffer();

            final char[] contents = buffer == null ? null : buffer.getCharacters();

            AJSourceElementParser parser = new AJSourceElementParser(requestor, problemFactory,
                    new CompilerOptions(options), true/*report local declarations*/, false);
            parser.reportOnlyOneSyntaxError = !computeProblems;

            parser.scanner.source = contents;
            requestor.setParser(parser);

            CompilationUnitDeclaration unitDec = parser.parseCompilationUnit(
                    new org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit() {
                        public char[] getContents() {
                            return contents;
                        }

                        public char[] getMainTypeName() {
                            return ((CompilationUnit) unit).getMainTypeName();
                        }

                        public char[][] getPackageName() {
                            return ((CompilationUnit) unit).getPackageName();
                        }

                        public char[] getFileName() {
                            return ((CompilationUnit) unit).getFileName();
                        }

                        public boolean ignoreOptionalProblems() {
                            return false;
                        }
                    }, true /*full parse to find local elements*/);
            org.aspectj.org.eclipse.jdt.core.compiler.IProblem[] problems = unitDec.compilationResult.problems;
            if (problems != null) {
                for (int i = 0; i < problems.length; i++) {
                    org.aspectj.org.eclipse.jdt.core.compiler.IProblem problem = problems[i];
                    if (problem == null)
                        continue;
                    ((IProblemRequestor) delegate)
                            .acceptProblem(
                                    new DefaultProblem(problem.getOriginatingFileName(), problem.getMessage(),
                                            problem.getID(), problem.getArguments(),
                                            problem.isError() ? ProblemSeverities.Error
                                                    : ProblemSeverities.Warning,
                                            problem.getSourceStart(), problem.getSourceEnd(),
                                            problem.getSourceLineNumber(), 0)); // unknown column
                }
            }
        } catch (JavaModelException e) {
        }
    }
}

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