private void setupTokenizer() {
st.resetSyntax();
st.wordChars('a', 'z');
st.wordChars('A', 'Z');
st.wordChars('0', '9');
st.wordChars(':', ':');
st.wordChars('.', '.');
st.wordChars('_', '_');
st.wordChars('-', '-');
st.wordChars('/', '/');
st.wordChars('\\', '\\');
st.wordChars('$', '$');
st.wordChars('{', '{'); // need {} for property subst
st.wordChars('}', '}');
st.wordChars('*', '*');
st.wordChars('+', '+');
st.wordChars('~', '~');
// XXX check ASCII table and add all other characters except special
// special: #="(),
st.whitespaceChars(0, ' ');
st.commentChar('#');
st.eolIsSignificant(true);
st.quoteChar('\"');
}
public void loadTree() {
System.out.println("Loading tree");
StreamTokenizer stream = null;
try {
FileInputStream f = new FileInputStream(tree);
Reader input = new BufferedReader(new InputStreamReader(f));
stream = new StreamTokenizer(input);
stream.resetSyntax();
stream.wordChars(32, 127);
} catch (Exception e) {
System.out.println("Error opening " + tree);
System.exit(1);
}
list = new ArrayList();
try {
// read the file to the end
while (stream.nextToken() != StreamTokenizer.TT_EOF) {
// is a word being read
if (stream.ttype == StreamTokenizer.TT_WORD) {
list.add(new String(stream.sval));
}
// is a number being read
if (stream.ttype == StreamTokenizer.TT_NUMBER) {
list.add(new Double(stream.nval));
}
}
} catch (Exception e) {
System.out.println("\nError reading " + tree + ". Exiting...");
System.exit(1);
}
}
/** Create an HTTP tokenizer, given a StreamTokenizer for the web page. */
public HttpTokenizer(StreamTokenizer tokens) throws IOException {
// Create a stream tokenizer
this.tokens = tokens;
// Set up the appropriate defaults
tokens.eolIsSignificant(false);
tokens.lowerCaseMode(true);
tokens.wordChars('<', '<');
tokens.wordChars('>', '>');
tokens.wordChars('/', '/');
tokens.wordChars('=', '=');
tokens.wordChars('@', '@');
tokens.wordChars('!', '!');
tokens.wordChars('-', '-');
tokens.ordinaryChar('.');
tokens.ordinaryChar('?');
}
public static Map<String, String> getStyles(String str) throws IOException {
HashMap<String, String> styles = new HashMap<String, String>();
if (str == null) return styles;
StreamTokenizer tt = new StreamTokenizer(new StringReader(str));
tt.resetSyntax();
tt.wordChars('!', '9');
tt.wordChars('<', '~');
tt.wordChars(128 + 32, 255);
tt.whitespaceChars(0, ' ');
while (tt.nextToken() != StreamTokenizer.TT_EOF) {
if (tt.ttype != ';') {
String key, value;
if (tt.ttype != StreamTokenizer.TT_WORD) {
throw new IOException(
"Key token expected in " + str + " " + Integer.toHexString(tt.ttype));
}
key = tt.sval;
if (tt.nextToken() != ':') {
throw new IOException("Colon expected after " + key + " in " + str);
}
if (tt.nextToken() != StreamTokenizer.TT_WORD) {
throw new IOException(
"Value token expected after " + key + " in " + str + " " + tt.ttype);
}
value = tt.sval;
while (tt.nextToken() == StreamTokenizer.TT_WORD) {
value += ' ' + tt.sval;
}
tt.pushBack();
styles.put(key, value);
}
}
return styles;
}
public CSVReader(BufferedReader input, char customizedSeparator) {
this.separator = customizedSeparator;
parser = new StreamTokenizer(input);
parser.ordinaryChars(0, 255);
parser.wordChars(0, 255);
parser.ordinaryChar('\"');
parser.ordinaryChar(customizedSeparator);
// Need to do set EOL significance after setting ordinary and word
// chars, and need to explicitly set \n and \r as whitespace chars
// for EOL detection to work
parser.eolIsSignificant(true);
parser.whitespaceChars('\n', '\n');
parser.whitespaceChars('\r', '\r');
atEOF = false;
}
public static AffineTransform getTransform(String str) throws IOException {
AffineTransform t = new AffineTransform();
if (str != null) {
StreamTokenizer tt = new StreamTokenizer(new StringReader(str));
tt.resetSyntax();
tt.wordChars('a', 'z');
tt.wordChars('A', 'Z');
tt.wordChars(128 + 32, 255);
tt.whitespaceChars(0, ' ');
tt.whitespaceChars(',', ',');
tt.parseNumbers();
while (tt.nextToken() != StreamTokenizer.TT_EOF) {
if (tt.ttype != StreamTokenizer.TT_WORD) {
throw new IOException("Illegal transform " + str);
}
String type = tt.sval;
if (tt.nextToken() != '(') {
throw new IOException("'(' not found in transform " + str);
}
if (type.equals("matrix")) {
double[] m = new double[6];
for (int i = 0; i < 6; i++) {
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException(
"Matrix value "
+ i
+ " not found in transform "
+ str
+ " token:"
+ tt.ttype
+ " "
+ tt.sval);
}
if (tt.nextToken() == StreamTokenizer.TT_WORD && tt.sval.startsWith("E")) {
double mantissa = tt.nval;
tt.nval = Double.valueOf(tt.nval + tt.sval);
} else {
tt.pushBack();
}
m[i] = tt.nval;
}
t.concatenate(new AffineTransform(m));
} else if (type.equals("translate")) {
double tx, ty;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("X-translation value not found in transform " + str);
}
tx = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
ty = tt.nval;
} else {
tt.pushBack();
ty = 0;
}
t.translate(tx, ty);
} else if (type.equals("scale")) {
double sx, sy;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("X-scale value not found in transform " + str);
}
sx = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
sy = tt.nval;
} else {
tt.pushBack();
sy = sx;
}
t.scale(sx, sy);
} else if (type.equals("rotate")) {
double angle, cx, cy;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Angle value not found in transform " + str);
}
angle = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
cx = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Y-center value not found in transform " + str);
}
cy = tt.nval;
} else {
tt.pushBack();
cx = cy = 0;
}
t.rotate(angle * Math.PI / 180d, cx * Math.PI / 180d, cy * Math.PI / 180d);
} else if (type.equals("skewX")) {
double angle;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Skew angle not found in transform " + str);
}
angle = tt.nval;
t.concatenate(new AffineTransform(1, 0, Math.tan(angle * Math.PI / 180), 1, 0, 0));
} else if (type.equals("skewY")) {
double angle;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Skew angle not found in transform " + str);
}
angle = tt.nval;
t.concatenate(new AffineTransform(1, Math.tan(angle * Math.PI / 180), 0, 1, 0, 0));
} else {
throw new IOException("Unknown transform " + type + " in " + str);
}
if (tt.nextToken() != ')') {
throw new IOException("')' not found in transform " + str);
}
}
}
return t;
}
/**
* Return an interned VarInfoAux that represents a given string. Elements are separated by commas,
* in the form:
*
* <p>x = a, "a key" = "a value"
*
* <p>Parse allow for quoted elements. White space to the left and right of keys and values do not
* matter, but inbetween does.
*/
public static /*@Interned*/ VarInfoAux parse(String inString) throws IOException {
Reader inStringReader = new StringReader(inString);
StreamTokenizer tok = new StreamTokenizer(inStringReader);
tok.resetSyntax();
tok.wordChars(0, Integer.MAX_VALUE);
tok.quoteChar('\"');
tok.whitespaceChars(' ', ' ');
tok.ordinaryChar('[');
tok.ordinaryChar(']');
tok.ordinaryChars(',', ',');
tok.ordinaryChars('=', '=');
Map</*@Interned*/ String, /*@Interned*/ String> map = theDefault.map;
String key = "";
String value = "";
boolean seenEqual = false;
boolean insideVector = false;
for (int tokInfo = tok.nextToken();
tokInfo != StreamTokenizer.TT_EOF;
tokInfo = tok.nextToken()) {
@SuppressWarnings("interning") // initialization-checking pattern
boolean mapUnchanged = (map == theDefault.map);
if (mapUnchanged) {
// We use default values if none are specified. We initialize
// here rather than above to save time when there are no tokens.
map = new HashMap</*@Interned*/ String, /*@Interned*/ String>(theDefault.map);
}
/*@Interned*/ String token;
if (tok.ttype == StreamTokenizer.TT_WORD || tok.ttype == '\"') {
assert tok.sval != null
: "@AssumeAssertion(nullness): representation invariant of StreamTokenizer";
token = tok.sval.trim().intern();
} else {
token = ((char) tok.ttype + "").intern();
}
debug.fine("Token info: " + tokInfo + " " + token);
if (token == "[") { // interned
if (!seenEqual) throw new IOException("Aux option did not contain an '='");
if (insideVector) throw new IOException("Vectors cannot be nested in an aux option");
if (value.length() > 0) throw new IOException("Cannot mix scalar and vector values");
insideVector = true;
value = "";
} else if (token == "]") { // interned
if (!insideVector) throw new IOException("']' without preceding '['");
insideVector = false;
} else if (token == ",") { // interned
if (!seenEqual) throw new IOException("Aux option did not contain an '='");
if (insideVector) throw new IOException("',' cannot be used inside a vector");
map.put(key.intern(), value.intern());
key = "";
value = "";
seenEqual = false;
} else if (token == "=") { // interned
if (seenEqual) throw new IOException("Aux option contained more than one '='");
if (insideVector) throw new IOException("'=' cannot be used inside a vector");
seenEqual = true;
} else {
if (!seenEqual) {
key = (key + " " + token).trim();
} else if (insideVector) {
value = value + " \"" + token.trim() + "\"";
} else {
value = (value + " " + token).trim();
}
}
}
if (seenEqual) {
map.put(key.intern(), value.intern());
}
// Interning
VarInfoAux result = new VarInfoAux(map).intern();
assert interningMap != null
: "@AssumeAssertion(nullness): application invariant: postcondition of intern(), which was just called";
if (debug.isLoggable(Level.FINE)) {
debug.fine("New parse " + result);
debug.fine("Intern table size: " + new Integer(interningMap.size()));
}
return result;
}
/**
* Start a transcript file that logs all input and output <br>
* The file is saved to the same directory as the project file <br>
* Under Windows 95, use Cafe/Word/WordPad to view the text file
*
* @param fn string to call transcript file
* @return none
*/
public static void recognizeAsLetter(char c) {
tokenizer.wordChars(c, c);
}