Examples with StringBuilderWriter org.apache.groovy.io.StringBuilderWriter used on opensource projects

Example 6 with StringBuilderWriter

use of org.apache.groovy.io.StringBuilderWriter in project groovy by apache.

the class StringEscapeUtils method unescapeJava.

/**
 * Unescapes any Java literals found in the <code>String</code>.
 * For example, it will turn a sequence of <code>'\'</code> and
 * <code>'n'</code> into a newline character, unless the <code>'\'</code>
 * is preceded by another <code>'\'</code>.
 *
 * @param str  the <code>String</code> to unescape, may be null
 * @return a new unescaped <code>String</code>, <code>null</code> if null string input
 */
public static String unescapeJava(String str) {
    if (str == null) {
        return null;
    }
    try {
        Writer writer = new StringBuilderWriter(str.length());
        unescapeJava(writer, str);
        return writer.toString();
    } catch (IOException ioe) {
        // this should never ever happen while writing to a StringBuilderWriter
        throw new RuntimeException(ioe);
    }
}

Example 7 with StringBuilderWriter

use of org.apache.groovy.io.StringBuilderWriter in project groovy by apache.

the class EncodingGroovyMethods method encodeHex.

/**
 * Produces a Writable that writes the hex encoding of the byte[]. Calling
 * toString() on this Writable returns the hex encoding as a String. The hex
 * encoding includes two characters for each byte and all letters are lower case.
 *
 * @param data byte array to be encoded
 * @return object which will write the hex encoding of the byte array
 * @see Integer#toHexString(int)
 */
public static Writable encodeHex(final byte[] data) {
    return new Writable() {

        @Override
        public Writer writeTo(Writer out) throws IOException {
            for (byte datum : data) {
                // convert byte into unsigned hex string
                String hexString = Integer.toHexString(datum & 0xFF);
                // add leading zero if the length of the string is one
                if (hexString.length() < 2) {
                    out.write("0");
                }
                // write hex string to writer
                out.write(hexString);
            }
            return out;
        }

        @Override
        public String toString() {
            Writer buffer = new StringBuilderWriter();
            try {
                writeTo(buffer);
            } catch (IOException e) {
                throw new StringWriterIOException(e);
            }
            return buffer.toString();
        }
    };
}

Example 8 with StringBuilderWriter

use of org.apache.groovy.io.StringBuilderWriter in project groovy by apache.

the class JavacJavaCompiler method compile.

@Override
public void compile(List<String> files, CompilationUnit cu) {
    List<String> javacParameters = makeParameters(cu.getClassLoader());
    StringBuilderWriter javacOutput = new StringBuilderWriter();
    int javacReturnValue = 0;
    try {
        try {
            boolean successful = doCompileWithSystemJavaCompiler(cu, files, javacParameters, javacOutput);
            if (!successful) {
                javacReturnValue = 1;
            }
        } catch (IllegalArgumentException e) {
            // any of the options are invalid
            javacReturnValue = 2;
            cu.getErrorCollector().addFatalError(new ExceptionMessage(e, true, cu));
        } catch (IOException e) {
            javacReturnValue = 1;
            cu.getErrorCollector().addFatalError(new ExceptionMessage(e, true, cu));
        }
    } catch (Exception e) {
        cu.getErrorCollector().addFatalError(new ExceptionMessage(e, true, cu));
    }
    if (javacReturnValue != 0) {
        switch(javacReturnValue) {
            case 1:
                addJavacError("Compile error during compilation with javac.", cu, javacOutput);
                break;
            case 2:
                addJavacError("Invalid commandline usage for javac.", cu, javacOutput);
                break;
            default:
                addJavacError("unexpected return value by javac.", cu, javacOutput);
                break;
        }
    } else {
        // print warnings if any
        System.out.print(javacOutput);
    }
}

Example 9 with StringBuilderWriter

use of org.apache.groovy.io.StringBuilderWriter in project groovy by apache.

the class XmlTemplateEngine method createTemplate.

@Override
public Template createTemplate(Reader reader) throws CompilationFailedException, ClassNotFoundException, IOException {
    Node root;
    try {
        root = xmlParser.parse(reader);
    } catch (SAXException e) {
        throw new RuntimeException("Parsing XML source failed.", e);
    }
    if (root == null) {
        throw new IOException("Parsing XML source failed: root node is null.");
    }
    StringBuilderWriter writer = new StringBuilderWriter(1024);
    writer.write("/* Generated by XmlTemplateEngine */\n");
    new GspPrinter(new PrintWriter(writer), indentation).print(root);
    Script script;
    try {
        script = groovyShell.parse(writer.toString(), "XmlTemplateScript" + counter.incrementAndGet() + ".groovy");
    } catch (Exception e) {
        throw new GroovyRuntimeException("Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): " + e.getMessage());
    }
    return new XmlTemplate(script);
}

Example 10 with StringBuilderWriter

use of org.apache.groovy.io.StringBuilderWriter in project groovy by apache.

the class BaseTemplate method stringOf.

public String stringOf(Closure cl) throws IOException {
    Writer old = out;
    Writer stringWriter = new StringBuilderWriter(32);
    out = stringWriter;
    Object result = cl.call();
    if (result != null && result != this) {
        stringWriter.append(result.toString());
    }
    out = old;
    return stringWriter.toString();
}