Source Code Cross Referenced for LengthParser.java in  » 6.0-JDK-Modules » j2me » com » sun » perseus » parser » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.perseus.parser 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *
003:         *
004:         * Portions Copyright  2000-2007 Sun Microsystems, Inc. All Rights
005:         * Reserved.  Use is subject to license terms.
006:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
007:         * 
008:         * This program is free software; you can redistribute it and/or
009:         * modify it under the terms of the GNU General Public License version
010:         * 2 only, as published by the Free Software Foundation.
011:         * 
012:         * This program is distributed in the hope that it will be useful, but
013:         * WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * General Public License version 2 for more details (a copy is
016:         * included at /legal/license.txt).
017:         * 
018:         * You should have received a copy of the GNU General Public License
019:         * version 2 along with this work; if not, write to the Free Software
020:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
021:         * 02110-1301 USA
022:         * 
023:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
024:         * Clara, CA 95054 or visit www.sun.com if you need additional
025:         * information or have any questions.
026:         */
027:
028:        /*****************************************************************************
029:         * Copyright (C) The Apache Software Foundation. All rights reserved.        *
030:         * ------------------------------------------------------------------------- *
031:         * This software is published under the terms of the Apache Software License *
032:         * version 1.1, a copy of which has been included with this distribution in  *
033:         * the LICENSE file.                                                         *
034:         *****************************************************************************/package com.sun.perseus.parser;
035:
036:        /**
037:         * Parser for SVG Length values
038:         *
039:         * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
040:         * @version $Id: LengthParser.java,v 1.2 2006/04/21 06:40:30 st125089 Exp $
041:         */
042:        public class LengthParser extends NumberParser {
043:            /**
044:             * Parses a length value. This method throws an
045:             * <code>IllegalArgumentException</code> if the input argument's
046:             * syntax does not conform to that of a length value, as defined
047:             * by the CSS 2 specification.
048:             *
049:             * @param s the value to convert to a <code>Length</code> object.
050:             * @return <code>Length</code> corresponding to the input argument.
051:             */
052:            public Length parseLength(final String s) {
053:                setString(s);
054:
055:                int mant = 0;
056:                int mantDig = 0;
057:                boolean mantPos = true;
058:                boolean mantRead = false;
059:
060:                int exp = 0;
061:                int expDig = 0;
062:                int expAdj = 0;
063:                boolean expPos = true;
064:
065:                int unitState = 0;
066:
067:                current = read();
068:                Length val = new Length();
069:
070:                switch (current) {
071:                case '-':
072:                    mantPos = false;
073:                case '+':
074:                    current = read();
075:                default:
076:                    // nothing, see next switch
077:                }
078:
079:                m1: switch (current) {
080:                default:
081:                    throw new IllegalArgumentException();
082:
083:                case '.':
084:                    break;
085:
086:                case '0':
087:                    mantRead = true;
088:                    l: for (;;) {
089:                        current = read();
090:                        switch (current) {
091:                        case '1':
092:                        case '2':
093:                        case '3':
094:                        case '4':
095:                        case '5':
096:                        case '6':
097:                        case '7':
098:                        case '8':
099:                        case '9':
100:                            break l;
101:                        default:
102:                            break m1;
103:                        case '0':
104:                        }
105:                    }
106:
107:                case '1':
108:                case '2':
109:                case '3':
110:                case '4':
111:                case '5':
112:                case '6':
113:                case '7':
114:                case '8':
115:                case '9':
116:                    mantRead = true;
117:                    l: for (;;) {
118:                        if (mantDig < 9) {
119:                            mantDig++;
120:                            mant = mant * 10 + (current - '0');
121:                        } else {
122:                            expAdj++;
123:                        }
124:                        current = read();
125:                        switch (current) {
126:                        default:
127:                            break l;
128:                        case '0':
129:                        case '1':
130:                        case '2':
131:                        case '3':
132:                        case '4':
133:                        case '5':
134:                        case '6':
135:                        case '7':
136:                        case '8':
137:                        case '9':
138:                        }
139:                    }
140:                }
141:
142:                if (current == '.') {
143:                    current = read();
144:                    m2: switch (current) {
145:                    default:
146:                    case 'e':
147:                    case 'E':
148:                        if (!mantRead) {
149:                            throw new IllegalArgumentException();
150:                        }
151:                        break;
152:
153:                    case '0':
154:                        if (mantDig == 0) {
155:                            l: for (;;) {
156:                                current = read();
157:                                expAdj--;
158:                                switch (current) {
159:                                case '1':
160:                                case '2':
161:                                case '3':
162:                                case '4':
163:                                case '5':
164:                                case '6':
165:                                case '7':
166:                                case '8':
167:                                case '9':
168:                                    break l;
169:                                default:
170:                                    break m2;
171:                                case '0':
172:                                }
173:                            }
174:                        }
175:                    case '1':
176:                    case '2':
177:                    case '3':
178:                    case '4':
179:                    case '5':
180:                    case '6':
181:                    case '7':
182:                    case '8':
183:                    case '9':
184:                        l: for (;;) {
185:                            if (mantDig < 9) {
186:                                mantDig++;
187:                                mant = mant * 10 + (current - '0');
188:                                expAdj--;
189:                            }
190:                            current = read();
191:                            switch (current) {
192:                            default:
193:                                break l;
194:                            case '0':
195:                            case '1':
196:                            case '2':
197:                            case '3':
198:                            case '4':
199:                            case '5':
200:                            case '6':
201:                            case '7':
202:                            case '8':
203:                            case '9':
204:                            }
205:                        }
206:                    }
207:                }
208:
209:                boolean le = false;
210:                es: switch (current) {
211:                case 'e':
212:                    le = true;
213:                case 'E':
214:                    current = read();
215:                    switch (current) {
216:                    default:
217:                        throw new IllegalArgumentException();
218:                    case '-':
219:                        expPos = false;
220:                    case '+':
221:                        current = read();
222:                        switch (current) {
223:                        default:
224:                            throw new IllegalArgumentException();
225:                        case '0':
226:                        case '1':
227:                        case '2':
228:                        case '3':
229:                        case '4':
230:                        case '5':
231:                        case '6':
232:                        case '7':
233:                        case '8':
234:                        case '9':
235:                        }
236:                    case '0':
237:                    case '1':
238:                    case '2':
239:                    case '3':
240:                    case '4':
241:                    case '5':
242:                    case '6':
243:                    case '7':
244:                    case '8':
245:                    case '9':
246:                    }
247:
248:                    en: switch (current) {
249:                    case '0':
250:                        l: for (;;) {
251:                            current = read();
252:                            switch (current) {
253:                            case '1':
254:                            case '2':
255:                            case '3':
256:                            case '4':
257:                            case '5':
258:                            case '6':
259:                            case '7':
260:                            case '8':
261:                            case '9':
262:                                break l;
263:                            default:
264:                                break en;
265:                            case '0':
266:                            }
267:                        }
268:
269:                    case '1':
270:                    case '2':
271:                    case '3':
272:                    case '4':
273:                    case '5':
274:                    case '6':
275:                    case '7':
276:                    case '8':
277:                    case '9':
278:                        l: for (;;) {
279:                            if (expDig < 3) {
280:                                expDig++;
281:                                exp = exp * 10 + (current - '0');
282:                            }
283:                            current = read();
284:                            switch (current) {
285:                            default:
286:                                break l;
287:                            case '0':
288:                            case '1':
289:                            case '2':
290:                            case '3':
291:                            case '4':
292:                            case '5':
293:                            case '6':
294:                            case '7':
295:                            case '8':
296:                            case '9':
297:                            }
298:                        }
299:                    }
300:                default:
301:                }
302:
303:                if (!expPos) {
304:                    exp = -exp;
305:                }
306:                exp += expAdj;
307:                if (!mantPos) {
308:                    mant = -mant;
309:                }
310:
311:                val.value = NumberParser.buildFloat(mant, exp);
312:
313:                switch (current) {
314:                case 'p':
315:                    current = read();
316:                    switch (current) {
317:                    case 'c':
318:                        val.unit = val.SVG_LENGTHTYPE_PC;
319:                        current = read();
320:                        break;
321:                    case 't':
322:                        val.unit = val.SVG_LENGTHTYPE_PT;
323:                        current = read();
324:                        break;
325:                    default:
326:                        throw new IllegalArgumentException();
327:                    }
328:                    break;
329:
330:                case 'i':
331:                    current = read();
332:                    if (current != 'n') {
333:                        throw new IllegalArgumentException();
334:                    }
335:                    val.unit = val.SVG_LENGTHTYPE_IN;
336:                    current = read();
337:                    break;
338:                case 'c':
339:                    current = read();
340:                    if (current != 'm') {
341:                        throw new IllegalArgumentException();
342:                    }
343:                    val.unit = val.SVG_LENGTHTYPE_CM;
344:                    current = read();
345:                    break;
346:                case 'm':
347:                    current = read();
348:                    if (current != 'm') {
349:                        throw new IllegalArgumentException();
350:                    }
351:                    val.unit = val.SVG_LENGTHTYPE_MM;
352:                    current = read();
353:                    break;
354:                case '%':
355:                    val.unit = val.SVG_LENGTHTYPE_PERCENTAGE;
356:                    current = read();
357:                    break;
358:                case -1:
359:                    val.unit = val.SVG_LENGTHTYPE_NUMBER;
360:                    current = read();
361:                    break;
362:                default:
363:                    throw new IllegalArgumentException();
364:                }
365:
366:                if (current != -1) {
367:                    throw new IllegalArgumentException();
368:                }
369:
370:                return val;
371:            }
372:        }
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