Java Code Examples for java.io.StringWriter#append()

static String exceptionToString(Throwable ex) {
    if (ex == null) {
        return "null";
    }
    StringWriter str = new StringWriter();
    str.append("Exception: ").append(ex.getClass().getSimpleName());
    str.append(" Message: ").append(ex.getMessage());
    str.append(" Stacktrace: ");
    Throwable cause = ex.getCause();
    if (cause != null) {
        str.append("\nCause: ").append(exceptionToString(cause));
    }
    PrintWriter writer = new PrintWriter(str);
    try {
        ex.printStackTrace(writer);
        return str.getBuffer().toString();
    } finally {
        try {
            str.close();
            writer.close();
        } catch (IOException e) {}
    }
}
 

/**
 * Confirm that position of reader is correct after looking for a header and finding none.
 */
@Test
public void testNoHeaderWithTrailingContents() throws IOException {
    final DgeHeader header = new DgeHeader();
    // Clear default values so the header looks like a codec not finding a header
    header.setVersion(null);
    header.setExpressionFormat(DgeHeader.ExpressionFormat.unknown);

    final StringWriter writer = new StringWriter();
    final String contentAfterHeader = "Goodbye, cruel world!";
    writer.append(contentAfterHeader);
    final BufferedReader reader = new BufferedReader(new StringReader(writer.toString()));
    final DgeHeader decodedHeader = new DgeHeaderCodec().decode(reader, "test input");
    Assert.assertEquals(decodedHeader, header);
    final String actualContentAfterHeader = reader.readLine();
    Assert.assertEquals(actualContentAfterHeader, contentAfterHeader);
}
 

private static String createLocalNew(final Class<? extends Invoke> type, final Function fxn) {
    final String identifier = makeInstanceName(fxn);
    StringWriter out = new StringWriter();

    out.append(String.format("%3$s[] argCoders = new %3$s[%1$d + %2$s.length];\n", fxn.args.size(), VARARGS_NAME, Coder.class.getCanonicalName()));

    for(int i = 0; i < fxn.args.size(); i++)
        out.append(String.format("argCoders[%1$d] = %2$s;\n", i, fxn.args.get(0).type.getJType().getCoderDescriptor().getCoderInstanceName()));

    if(fxn.variadic){
        out.append(String.format("for(int i = %1$d; i < (%1$d + %2$s.length); i++)\n", fxn.args.size(), VARARGS_NAME));
        out.append(String.format("\targCoders[i] = %1$s.getCoderAtRuntime(%2$s[i - %3$s]);\n", Coder.class.getCanonicalName(), VARARGS_NAME, fxn.args.size()));
    }

    out.append("final " + type.getCanonicalName() + " " + identifier + " = new " + type.getCanonicalName() + "(" + firstArg(fxn) + ", \"" + fxn.name + "\", "
            + fxn.returnValue.type.getJType().getCoderDescriptor().getCoderInstanceName() + ", argCoders);");

    return out.toString();
}
 

private static String createLocalNew(final Class<? extends Invoke> type, final Function fxn) {
    final String identifier = makeInstanceName(fxn);
    StringWriter out = new StringWriter();

    out.append(String.format("%3$s[] argCoders = new %3$s[%1$d + %2$s.length];\n", fxn.args.size(), VARARGS_NAME, Coder.class.getCanonicalName()));

    for(int i = 0; i < fxn.args.size(); i++)
        out.append(String.format("argCoders[%1$d] = %2$s;\n", i, fxn.args.get(0).type.getJType().getCoderDescriptor().getCoderInstanceName()));

    if(fxn.variadic){
        out.append(String.format("for(int i = %1$d; i < (%1$d + %2$s.length); i++)\n", fxn.args.size(), VARARGS_NAME));
        out.append(String.format("\targCoders[i] = %1$s.getCoderAtRuntime(%2$s[i - %3$s]);\n", Coder.class.getCanonicalName(), VARARGS_NAME, fxn.args.size()));
    }

    out.append("final " + type.getCanonicalName() + " " + identifier + " = new " + type.getCanonicalName() + "(" + firstArg(fxn) + ", \"" + fxn.name + "\", "
            + fxn.returnValue.type.getJType().getCoderDescriptor().getCoderInstanceName() + ", argCoders);");

    return out.toString();
}
 

/**
 * Confirm that position of reader is immediately after header, after header is decoded.
 */
@Test(dataProvider = "numberOfLibrariesDataProvider")
public void testHeaderWithTrailingContentsInputStream(final Integer numberOfLibraries) throws IOException {
    final DgeHeader header = makeDgeHeader(numberOfLibraries);

    final StringWriter writer = new StringWriter();
    final DgeHeaderCodec codec = new DgeHeaderCodec();
    codec.encode(writer, header);
    final String contentAfterHeader = "Goodbye, cruel world!";
    writer.append(contentAfterHeader);
    System.out.print(writer.toString());
    final BufferedInputStream inputStream = new BufferedInputStream(new ByteArrayInputStream(writer.toString().getBytes()));
    final DgeHeader decodedHeader = codec.decode(inputStream, "test input");
    Assert.assertEquals(decodedHeader, header);
    final String actualContentAfterHeader = new BufferedReader(new InputStreamReader(inputStream)).readLine();
    Assert.assertEquals(actualContentAfterHeader, contentAfterHeader);
}
 

String print(Struct st){
    StringWriter sw = new StringWriter();
    st.raw.position(0);
    sw.append(st.getClass().getSimpleName() + ":" + st.raw.limit() + " @ " + Long.toHexString(st.raw.bufferPtr) + " : ");
    for(int i = 0; i < st.raw.limit(); i++){
        sw.append(byteToHexString(st.raw.get()) + " ");
        if((i+1) % 4 == 0)
            sw.append(" ");
    }
    System.out.println(sw.toString().trim());
    return sw.toString().trim();
}
 

public static void generateVertexLine(StringWriter sw, ObjectMapper mapper, VertexBean vBean) throws JsonGenerationException, JsonMappingException, IOException {
    sw.getBuffer().setLength(0);

    sw.append('V'); // Record type
    sw.append('=');

    mapper.writeValue(sw, vBean);

    sw.append('#');

    int hashCode = hashCode(sw.toString());
    sw.append(toHex(hashCode));
    sw.append('\n');
}
 

private static String objCEncoding(final Coder[] elementCoders) {
    StringWriter str = new StringWriter();
    str.append("{?=");
    for(Coder c : elementCoders)
        str.append(c.getObjCEncoding());
    str.append("}");
    return str.toString();
}
 

@Override public String toString(){
    StringWriter out = new StringWriter();
    if(jdoc.size() > 0){
        out.append("\t/**\n");
        out.append("\t * " + Fp.join("\n\t * ", jdoc));
        out.append("\t */\n");
    }
    out.append("\t" + Fp.join(" ", attrs) + " " + Fp.join(" ", mods) + " " + type + " " + name + "(" + Fp.join(", ", args) + "){\n");
    out.append("\t\t" + Fp.join("\n\t\t", body) + "\n");
    out.append("\t}\n");
    return out.toString();
}
 

private static String objCEncoding(final Coder[] elementCoders) {
    StringWriter str = new StringWriter();
    str.append("{?=");
    for(Coder c : elementCoders)
        str.append(c.getObjCEncoding());
    str.append("}");
    return str.toString();
}
 

protected void renderPanelHeading(JspWriter out) throws IOException {

        StringWriter headFilterContent = new StringWriter();
        StringWriter titleContent = new StringWriter();
        StringWriter headAddons = new StringWriter();

        renderTitle(titleContent);
        if (getPageList().hasFilter()) {
            headFilterContent.append("<div class=\"spacewalk-list-filter\">");
            renderFilterBox(headFilterContent);
            headFilterContent.append("</div>");
        }
        renderHeadExtraAddons(headAddons);

        int headContentLength = headFilterContent.getBuffer().length() +
                                titleContent.getBuffer().length() +
                                headAddons.getBuffer().length();

        if (headContentLength > 0) {
            out.println("<div class=\"panel-heading\">");
            out.println(titleContent.toString());
            out.println("<div class=\"spacewalk-list-head-addons\">");
            out.println(headFilterContent.toString());
            out.println("<div class=\"spacewalk-list-head-addons-extra\">");
            out.println(headAddons.toString());
            out.println("</div>");
            out.println("</div>");
            out.println("</div>");
        }
    }
 

public void publishHtmlReport(StringWriter writer)
{
    final int failedNumber = getTestCaseNumber(NumberType.FAILED);
    writer.append("\n\n<h1>" + scriptContent + "</h1>\n");
    writer.append("<p><b>Name</b>: " + scriptName + "</p>\n");
    writer.append("<p><b>Number of test cases</b>: " + getTestCaseNumber(NumberType.TOTAL) + "</p>\n");
    writer.append("<p><b>Reading duration</b>: " + readingDuration + "ms</p>\n");
    writer.append("<table border = \"1\" cellspacing=\"0\" cellpadding=\"5\">\n");
    String title = "    <tr>";
    for (String t : TestCase.PARAMETERS)
    {
        title += "<td><b>" + t + "</b></td>";
    }
    title += "</tr>\n";
    writer.append(title);
    for (TestCase tc : testCases)
    {
        tc.publishHtmlReport(writer);
    }
    writer.append("</table>\n");
    String status = "<p><b>Status</b>: ";
    if (failedNumber == 0)
    {
        status += "<font color=\"green\">PASSED</font>";
    }
    else
    {
        status += "<font color=\"red\">FAILED</font>";
    }
    status += " (passed: " + getTestCaseNumber(NumberType.PASSED) + ", failed: " + failedNumber + ")</p>\n";
    writer.append(status);
}
 

String print(Struct st){
    StringWriter sw = new StringWriter();
    st.raw.position(0);
    sw.append(st.getClass().getSimpleName() + ":" + st.raw.limit() + " @ " + Long.toHexString(st.raw.bufferPtr) + " : ");
    for(int i = 0; i < st.raw.limit(); i++){
        sw.append(byteToHexString(st.raw.get()) + " ");
        if((i+1) % 4 == 0)
            sw.append(" ");
    }
    System.out.println(sw.toString().trim());
    return sw.toString().trim();
}
 

@Override public String toString(){
    StringWriter out = new StringWriter();
    if(jdoc.size() > 0){
        out.append("\t/**\n");
        out.append("\t * " + Fp.join("\n\t * ", jdoc));
        out.append("\t */\n");
    }
    out.append("\t" + Fp.join(" ", attrs) + " " + Fp.join(" ", mods) + " " + type + " " + name + "(" + Fp.join(", ", args) + "){\n");
    out.append("\t\t" + Fp.join("\n\t\t", body) + "\n");
    out.append("\t}\n");
    return out.toString();
}
 

private String byteToHexString(Byte b){
    StringWriter sw = new StringWriter();
    sw.append(halfByteToHex(b & 0xF));
    sw.append(halfByteToHex((b & 0xF0) >> 4));
    return sw.toString();
}
 

boolean registerUserClass(final Class<? extends ID> clazz, final Class<? extends NSClass> clazzClazz) {
    final String nativeClassName = clazz.getSimpleName();
    // Is it already registered?
    if(0 != NSClass.getNativeClassByName(nativeClassName))
        return false;

    if(clazz.isAnonymousClass())
        throw new RuntimeException("JObjC cannot register anonymous classes.");

    // Verify superclass
    long superClass = NSClass.getNativeClassByName(clazz.getSuperclass().getSimpleName());
    if(0 == superClass)
        throw new RuntimeException(clazz.getSuperclass() + ", the superclass of " + clazz + ", must be a registered class.");

    runtime.registerPackage(clazz.getPackage().getName());

    // Create class
    long classPtr = Subclassing.allocateClassPair(superClass, nativeClassName);
    if(classPtr == 0) throw new RuntimeException("objc_allocateClassPair returned 0.");

    // Add ivar to hold jobject
    boolean addedI = Subclassing.addIVarForJObj(classPtr);
    if(!addedI) throw new RuntimeException("class_addIvar returned false.");

    // Verify constructor
    try {
        clazz.getConstructor(ID.CTOR_ARGS);
    } catch (Exception e) {
        throw new RuntimeException("Could not access required constructor: " + ID.CTOR_ARGS, e);
    }

    // Patch alloc to create corresponding jobject on invoke
    patchAlloc(classPtr);

    // Add methods
    Set<String> takenSelNames = new HashSet<String>();
    for(Method method : clazz.getDeclaredMethods()){
        // No overloading
        String selName = SEL.selectorName(method.getName(), method.getParameterTypes().length > 0);
        if(takenSelNames.contains(selName))
            throw new RuntimeException("Obj-C does not allow method overloading. The Objective-C selector '"
                    + selName + "' appears more than once in class " + clazz.getCanonicalName() + " / " + nativeClassName + ".");

        method.setAccessible(true);

        // Divine CIF
        Coder returnCoder = Coder.getCoderAtRuntimeForType(method.getReturnType());
        Class[] paramTypes = method.getParameterTypes();
        Coder[] argCoders = new Coder[paramTypes.length];
        for(int i = 0; i < paramTypes.length; i++)
            argCoders[i] = Coder.getCoderAtRuntimeForType(paramTypes[i]);

        CIF cif = new MsgSend(runtime, selName, returnCoder, argCoders).funCall.cif;

        // .. and objc encoding
        StringWriter encType = new StringWriter();
        encType.append(returnCoder.getObjCEncoding());
        encType.append("@:");
        for(int i = 0; i < argCoders.length; i++)
            encType.append(argCoders[i].getObjCEncoding());

        // Add it!
        boolean addedM = Subclassing.addMethod(classPtr, selName, method, cif, cif.cif.bufferPtr, encType.toString());
        if(!addedM) throw new RuntimeException("Failed to add method.");
        takenSelNames.add(selName);
    }

    // Seal it
    Subclassing.registerClassPair(classPtr);
    registeredUserSubclasses.add(classPtr);

    return true;
}
 

public String readWhile(String s) {
    StringWriter sw = new StringWriter();
    while(s.indexOf(peek()) != -1)
        sw.append(read());
    return sw.toString();
}
 

private String byteToHexString(Byte b){
    StringWriter sw = new StringWriter();
    sw.append(halfByteToHex(b & 0xF));
    sw.append(halfByteToHex((b & 0xF0) >> 4));
    return sw.toString();
}
 

private String byteToHexString(Byte b){
    StringWriter sw = new StringWriter();
    sw.append(halfByteToHex(b & 0xF));
    sw.append(halfByteToHex((b & 0xF0) >> 4));
    return sw.toString();
}
 

public String readWhile(String s) {
    StringWriter sw = new StringWriter();
    while(s.indexOf(peek()) != -1)
        sw.append(read());
    return sw.toString();
}