/*
* Portions Copyright 2000-2009 Sun Microsystems, Inc. All Rights
* Reserved. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
/*****************************************************************************
* Copyright (C) The Apache Software Foundation. All rights reserved. *
* ------------------------------------------------------------------------- *
* This software is published under the terms of the Apache Software License *
* version 1.1, a copy of which has been included with this distribution in *
* the LICENSE file. *
*****************************************************************************/
package com.sun.perseus.parser;
/**
* Parser for SVG Length values
*
*/
public class LengthParser extends NumberParser {
/**
* Parses a length value. This method throws an
* <code>IllegalArgumentException</code> if the input argument's
* syntax does not conform to that of a length value, as defined
* by the CSS 2 specification.
*
* @param s the value to convert to a <code>Length</code> object.
* @return <code>Length</code> corresponding to the input argument.
*/
public Length parseLength(final String s) {
setString(s);
int mant = 0;
int mantDig = 0;
boolean mantPos = true;
boolean mantRead = false;
int exp = 0;
int expDig = 0;
int expAdj = 0;
boolean expPos = true;
int unitState = 0;
current = read();
Length val = new Length();
switch (current) {
case '-':
mantPos = false;
case '+':
current = read();
default:
// nothing, see next switch
}
m1: switch (current) {
default:
throw new IllegalArgumentException();
case '.':
break;
case '0':
mantRead = true;
l: for (;;) {
current = read();
switch (current) {
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
break l;
default:
break m1;
case '0':
}
}
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
mantRead = true;
l: for (;;) {
if (mantDig < 9) {
mantDig++;
mant = mant * 10 + (current - '0');
} else {
expAdj++;
}
current = read();
switch (current) {
default:
break l;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
}
}
}
if (current == '.') {
current = read();
m2: switch (current) {
default:
case 'e': case 'E':
if (!mantRead) {
throw new IllegalArgumentException();
}
break;
case '0':
if (mantDig == 0) {
l: for (;;) {
current = read();
expAdj--;
switch (current) {
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
break l;
default:
break m2;
case '0':
}
}
}
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
l: for (;;) {
if (mantDig < 9) {
mantDig++;
mant = mant * 10 + (current - '0');
expAdj--;
}
current = read();
switch (current) {
default:
break l;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
}
}
}
}
boolean le = false;
es: switch (current) {
case 'e':
le = true;
case 'E':
current = read();
switch (current) {
default:
throw new IllegalArgumentException();
case '-':
expPos = false;
case '+':
current = read();
switch (current) {
default:
throw new IllegalArgumentException();
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
}
en: switch (current) {
case '0':
l: for (;;) {
current = read();
switch (current) {
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
break l;
default:
break en;
case '0':
}
}
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
l: for (;;) {
if (expDig < 3) {
expDig++;
exp = exp * 10 + (current - '0');
}
current = read();
switch (current) {
default:
break l;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
}
}
}
default:
}
if (!expPos) {
exp = -exp;
}
exp += expAdj;
if (!mantPos) {
mant = -mant;
}
val.value = NumberParser.buildFloat(mant, exp);
switch (current) {
case 'p':
current = read();
switch (current) {
case 'c':
val.unit = val.SVG_LENGTHTYPE_PC;
current = read();
break;
case 't':
val.unit = val.SVG_LENGTHTYPE_PT;
current = read();
break;
default:
throw new IllegalArgumentException();
}
break;
case 'i':
current = read();
if (current != 'n') {
throw new IllegalArgumentException();
}
val.unit = val.SVG_LENGTHTYPE_IN;
current = read();
break;
case 'c':
current = read();
if (current != 'm') {
throw new IllegalArgumentException();
}
val.unit = val.SVG_LENGTHTYPE_CM;
current = read();
break;
case 'm':
current = read();
if (current != 'm') {
throw new IllegalArgumentException();
}
val.unit = val.SVG_LENGTHTYPE_MM;
current = read();
break;
case '%':
val.unit = val.SVG_LENGTHTYPE_PERCENTAGE;
current = read();
break;
case -1:
val.unit = val.SVG_LENGTHTYPE_NUMBER;
current = read();
break;
default:
throw new IllegalArgumentException();
}
if (current != -1) {
throw new IllegalArgumentException();
}
return val;
}
}