public byte[] decode(String code) {
ByteArrayOutputStream baos = new ByteArrayOutputStream((code.length() * 3 / 4));
StringReader sr;
if (code.endsWith(Character.toString(padding))) {
sr = new StringReader(code.substring(0, code.indexOf(padding)));
} else {
sr = new StringReader(code);
}
char[] c = new char[4];
int[] b = new int[4];
int len;
try {
int count = 0;
while ((len = sr.read(c, 0, 4)) == 4) {
b[0] = decode[c[0]];
b[1] = decode[c[1]];
b[2] = decode[c[2]];
b[3] = decode[c[3]];
baos.write(((b[0] & 0x3f) << 2) | ((b[1] & 0x30) >> 4));
baos.write(((b[1] & 0x0f) << 4) | ((b[2] & 0x3c) >> 2));
baos.write(((b[2] & 0x03) << 6) | (b[3] & 0x3f));
count++;
if (count == 19) {
sr.mark(1);
count = 0;
if (sr.read() != 10) {
sr.reset();
}
}
}
b[0] = decode[c[0]];
b[1] = decode[c[1]];
b[2] = decode[c[2]];
b[3] = decode[c[3]];
if (len == 2) {
baos.write(((b[0] & 0x3f) << 2) | ((b[1] & 0x30) >> 4));
} else if (len == 3) {
baos.write(((b[0] & 0x3f) << 2) | ((b[1] & 0x30) >> 4));
baos.write(((b[1] & 0x0f) << 4) | ((b[2] & 0x3c) >> 2));
}
return baos.toByteArray();
} catch (java.io.IOException e) {
return null;
} catch (RuntimeException e) {
return null;
}
}
/**
* Compile a string into a function or SimpleVariable.
*
* <p>Called by {@link #compileString(String)} when that has detected "${".
*
* <p>Calls {@link CompoundVariable#getNamedFunction(String)} if it detects: '(' - start of
* parameter list '}' - end of function call
*
* @param reader points to input after the "${"
* @return the function or variable object (or a String)
*/
Object makeFunction(StringReader reader) throws InvalidVariableException {
char[] current = new char[1];
char previous = ' '; // TODO - why use space?
StringBuilder buffer = new StringBuilder();
Object function;
try {
while (reader.read(current) == 1) {
if (current[0] == '\\') {
if (reader.read(current) == 0) {
break;
}
previous = ' ';
buffer.append(current[0]);
continue;
} else if (current[0] == '(' && previous != ' ') {
String funcName = buffer.toString();
function = CompoundVariable.getNamedFunction(funcName);
if (function instanceof Function) {
((Function) function).setParameters(parseParams(reader));
if (reader.read(current) == 0 || current[0] != '}') {
reader.reset(); // set to start of string
char[] cb = new char[100];
reader.read(cb); // return deliberately ignored
throw new InvalidVariableException(
"Expected } after " + funcName + " function call in " + new String(cb));
}
if (function instanceof TestListener) {
StandardJMeterEngine.register((TestListener) function);
}
return function;
} else { // Function does not exist, so treat as per missing variable
buffer.append(current[0]);
}
continue;
} else if (current[0] == '}') { // variable, or function with no parameter list
function = CompoundVariable.getNamedFunction(buffer.toString());
if (function instanceof Function) { // ensure that setParameters() is called.
((Function) function).setParameters(new LinkedList<CompoundVariable>());
}
buffer.setLength(0);
return function;
} else {
buffer.append(current[0]);
previous = current[0];
}
}
} catch (IOException e) {
log.error("Error parsing function: " + buffer.toString(), e);
return null;
}
log.warn("Probably an invalid function string: " + buffer.toString());
return buffer.toString();
}
private void execute() {
try {
Method mth = PreparedStatement.class.getDeclaredMethod(this.methodName, this.argClasses);
mth.invoke(wrapped, args);
if (args[1] instanceof StringReader) {
StringReader sr = (StringReader) args[1];
sr.reset();
}
if (args[1] instanceof InputStream
&& ("setAsciiStream".equals(methodName) || "setUnicodeStream".equals(methodName))) {
((InputStream) args[1]).reset();
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Repositions this stream to the position at the time the <code>mark</code> method was last
* called on this input stream.
*/
public void reset() throws IOException {
in.reset();
}