| 1 | /* Generated By:JavaCC: Do not edit this line. VersionParser.java */ |
| 2 | /* |
| 3 | * jDTAUS Core RI Client Container |
| 4 | * Copyright (C) 2005 Christian Schulte |
| 5 | * <cs@schulte.it> |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with this library; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | * |
| 21 | * $JDTAUS: VersionParser.jj 8641 2012-09-27 06:45:17Z schulte $ |
| 22 | * |
| 23 | */ |
| 24 | package org.jdtaus.core.container.ri.client.versioning; |
| 25 | |
| 26 | import java.io.StringReader; |
| 27 | import java.util.List; |
| 28 | import java.util.LinkedList; |
| 29 | import java.util.Locale; |
| 30 | import java.text.NumberFormat; |
| 31 | |
| 32 | /** |
| 33 | * Parses version identifiers. |
| 34 | * <p><blockquote><pre> |
| 35 | * Version ::= Token ( ( <SEPARATOR> )* Token )* <EOF> |
| 36 | * Token ::= <INTEGER> |
| 37 | * | <IDENTIFIER> |
| 38 | * </pre></blockquote></p> |
| 39 | * <p> |
| 40 | * A separator character is defined as<blockquote><pre> |
| 41 | * [".","_","-","@","/","\\"," ","\t","\n","\r","\f","\b","\"","\'"]</pre></blockquote> |
| 42 | * An integer is a sequence of digits. An identifier is everything else, not |
| 43 | * a separator character or an integer. |
| 44 | * </p> |
| 45 | * |
| 46 | * @author <a href="mailto:cs@schulte.it">Christian Schulte</a> |
| 47 | * @version $JDTAUS: VersionParser.jj 8641 2012-09-27 06:45:17Z schulte $ |
| 48 | * @see #compare(String, String) |
| 49 | */ |
| 50 | public final class VersionParser implements VersionParserConstants { |
| 51 | |
| 52 | /** |
| 53 | * Parses the input to produce an array of tokens. |
| 54 | * |
| 55 | * @return the parsed tokens. |
| 56 | * |
| 57 | * @throws ParseException if the parse fails. |
| 58 | */ |
| 59 | public Token[] parse() throws ParseException |
| 60 | { |
| 61 | return this.Version(); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Compares two versions for order. |
| 66 | * <p>This method parses the given strings to produce a sequence of tokens |
| 67 | * and then compares these tokens for order.</p> |
| 68 | * |
| 69 | * @param v1 the version to compare with. |
| 70 | * @param v2 the version to compare to. |
| 71 | * |
| 72 | * @return a negative integer, zero, or a positive integer as the first |
| 73 | * version is less than, equal to, or greater than the second. |
| 74 | * |
| 75 | * @throws NullPointerException if {@code v1} or {@code v2} is {@code null}. |
| 76 | * @throws java.text.ParseException if parsing fails. |
| 77 | */ |
| 78 | public static int compare( final String v1, final String v2 ) |
| 79 | throws java.text.ParseException |
| 80 | { |
| 81 | if ( v1 == null ) |
| 82 | { |
| 83 | throw new NullPointerException( "v1" ); |
| 84 | } |
| 85 | if ( v2 == null ) |
| 86 | { |
| 87 | throw new NullPointerException( "v2" ); |
| 88 | } |
| 89 | |
| 90 | try |
| 91 | { |
| 92 | final NumberFormat format = |
| 93 | NumberFormat.getNumberInstance( Locale.ENGLISH ); |
| 94 | |
| 95 | final VersionParser versionParser = |
| 96 | new VersionParser( new StringReader( v1 ) ); |
| 97 | |
| 98 | final Token[] c = versionParser.parse(); |
| 99 | |
| 100 | versionParser.ReInit( new StringReader( v2 ) ); |
| 101 | final Token[] r = versionParser.parse(); |
| 102 | |
| 103 | final int len = Math.max( c.length, r.length ); |
| 104 | |
| 105 | int result = 0; |
| 106 | |
| 107 | for ( int i = 0; i < len; i++ ) |
| 108 | { |
| 109 | final Token current; |
| 110 | final Token spec; |
| 111 | |
| 112 | if ( i < c.length ) |
| 113 | { |
| 114 | current = c[i]; |
| 115 | } |
| 116 | else |
| 117 | { |
| 118 | current = new Token(); |
| 119 | current.kind = r[i].kind; |
| 120 | |
| 121 | if ( r[i].kind == VersionParserConstants.IDENTIFIER ) |
| 122 | { |
| 123 | // If a version has less tokens than another, comparison is stopped |
| 124 | // at the first identifier. Remaining tokens are considered suffices |
| 125 | // less than the shorter version. |
| 126 | result = 1; |
| 127 | break; |
| 128 | } |
| 129 | else if ( r[i].kind == VersionParserConstants.INTEGER ) |
| 130 | { |
| 131 | current.image = "0"; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | if ( i < r.length ) |
| 136 | { |
| 137 | spec = r[i]; |
| 138 | } |
| 139 | else |
| 140 | { |
| 141 | spec = new Token(); |
| 142 | spec.kind = c[i].kind; |
| 143 | |
| 144 | if ( c[i].kind == VersionParserConstants.IDENTIFIER ) |
| 145 | { |
| 146 | // If a version has less tokens than another, comparison is stopped |
| 147 | // at the first identifier. Remaining tokens are considered suffices |
| 148 | // less than the shorter version. |
| 149 | result = -1; |
| 150 | break; |
| 151 | } |
| 152 | else if ( c[i].kind == VersionParserConstants.INTEGER ) |
| 153 | { |
| 154 | spec.image = "0"; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | if ( current.kind != spec.kind ) |
| 159 | { |
| 160 | throw new java.text.ParseException ( "Cannot compare '" + |
| 161 | current.image +"' to '" + spec.image + "' for input '" + v1 + |
| 162 | "' and '" + v2 + "'.", i ); |
| 163 | |
| 164 | } |
| 165 | |
| 166 | if ( current.kind == VersionParserConstants.IDENTIFIER ) |
| 167 | { |
| 168 | result = current.image.compareTo( spec.image ); |
| 169 | if ( result != 0 ) |
| 170 | { |
| 171 | break; |
| 172 | } |
| 173 | } |
| 174 | else if ( current.kind == VersionParserConstants.INTEGER ) |
| 175 | { |
| 176 | final Long m = (Long) format.parse( current.image ); |
| 177 | final Long n = (Long) format.parse( spec.image ); |
| 178 | |
| 179 | result = m.compareTo( n ); |
| 180 | |
| 181 | if ( result != 0 ) |
| 182 | { |
| 183 | break; |
| 184 | } |
| 185 | } |
| 186 | else |
| 187 | { |
| 188 | // Unsupported tokens are compared lexicographically by default. |
| 189 | result = current.image.compareTo( spec.image ); |
| 190 | if ( result != 0 ) |
| 191 | { |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | return result; |
| 198 | } |
| 199 | catch ( ParseException e ) |
| 200 | { |
| 201 | final java.text.ParseException pe = |
| 202 | new java.text.ParseException( e.getMessage(), |
| 203 | e.currentToken.beginColumn ); |
| 204 | |
| 205 | pe.initCause ( e ); |
| 206 | throw pe; |
| 207 | } |
| 208 | catch ( TokenMgrError e ) |
| 209 | { |
| 210 | final java.text.ParseException pe = |
| 211 | new java.text.ParseException( e.getMessage(), |
| 212 | e.errorCode ); |
| 213 | |
| 214 | pe.initCause ( e ); |
| 215 | throw pe; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | final private Token[] Version() throws ParseException { |
| 220 | final List tokens = new LinkedList(); |
| 221 | Token(tokens); |
| 222 | label_1: |
| 223 | while (true) { |
| 224 | switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { |
| 225 | case INTEGER: |
| 226 | case SEPARATOR: |
| 227 | case IDENTIFIER: |
| 228 | ; |
| 229 | break; |
| 230 | default: |
| 231 | jj_la1[0] = jj_gen; |
| 232 | break label_1; |
| 233 | } |
| 234 | label_2: |
| 235 | while (true) { |
| 236 | switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { |
| 237 | case SEPARATOR: |
| 238 | ; |
| 239 | break; |
| 240 | default: |
| 241 | jj_la1[1] = jj_gen; |
| 242 | break label_2; |
| 243 | } |
| 244 | jj_consume_token(SEPARATOR); |
| 245 | } |
| 246 | Token(tokens); |
| 247 | } |
| 248 | jj_consume_token(0); |
| 249 | {if (true) return (Token[]) tokens.toArray(new Token[tokens.size()]);} |
| 250 | throw new Error("Missing return statement in function"); |
| 251 | } |
| 252 | |
| 253 | final private void Token(final List tokens) throws ParseException { |
| 254 | Token part; |
| 255 | switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { |
| 256 | case INTEGER: |
| 257 | part = jj_consume_token(INTEGER); |
| 258 | tokens.add ( part ); |
| 259 | break; |
| 260 | case IDENTIFIER: |
| 261 | part = jj_consume_token(IDENTIFIER); |
| 262 | tokens.add( part ); |
| 263 | break; |
| 264 | default: |
| 265 | jj_la1[2] = jj_gen; |
| 266 | jj_consume_token(-1); |
| 267 | throw new ParseException(); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /** Generated Token Manager. */ |
| 272 | public VersionParserTokenManager token_source; |
| 273 | SimpleCharStream jj_input_stream; |
| 274 | /** Current token. */ |
| 275 | public Token token; |
| 276 | /** Next token. */ |
| 277 | public Token jj_nt; |
| 278 | private int jj_ntk; |
| 279 | private int jj_gen; |
| 280 | final private int[] jj_la1 = new int[3]; |
| 281 | static private int[] jj_la1_0; |
| 282 | static { |
| 283 | jj_la1_init_0(); |
| 284 | } |
| 285 | private static void jj_la1_init_0() { |
| 286 | jj_la1_0 = new int[] {0xe,0x4,0xa,}; |
| 287 | } |
| 288 | |
| 289 | /** Constructor with InputStream. */ |
| 290 | public VersionParser(java.io.InputStream stream) { |
| 291 | this(stream, null); |
| 292 | } |
| 293 | /** Constructor with InputStream and supplied encoding */ |
| 294 | public VersionParser(java.io.InputStream stream, String encoding) { |
| 295 | try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); } |
| 296 | token_source = new VersionParserTokenManager(jj_input_stream); |
| 297 | token = new Token(); |
| 298 | jj_ntk = -1; |
| 299 | jj_gen = 0; |
| 300 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 301 | } |
| 302 | |
| 303 | /** Reinitialise. */ |
| 304 | public void ReInit(java.io.InputStream stream) { |
| 305 | ReInit(stream, null); |
| 306 | } |
| 307 | /** Reinitialise. */ |
| 308 | public void ReInit(java.io.InputStream stream, String encoding) { |
| 309 | try { jj_input_stream.ReInit(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); } |
| 310 | token_source.ReInit(jj_input_stream); |
| 311 | token = new Token(); |
| 312 | jj_ntk = -1; |
| 313 | jj_gen = 0; |
| 314 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 315 | } |
| 316 | |
| 317 | /** Constructor. */ |
| 318 | public VersionParser(java.io.Reader stream) { |
| 319 | jj_input_stream = new SimpleCharStream(stream, 1, 1); |
| 320 | token_source = new VersionParserTokenManager(jj_input_stream); |
| 321 | token = new Token(); |
| 322 | jj_ntk = -1; |
| 323 | jj_gen = 0; |
| 324 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 325 | } |
| 326 | |
| 327 | /** Reinitialise. */ |
| 328 | public void ReInit(java.io.Reader stream) { |
| 329 | jj_input_stream.ReInit(stream, 1, 1); |
| 330 | token_source.ReInit(jj_input_stream); |
| 331 | token = new Token(); |
| 332 | jj_ntk = -1; |
| 333 | jj_gen = 0; |
| 334 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 335 | } |
| 336 | |
| 337 | /** Constructor with generated Token Manager. */ |
| 338 | public VersionParser(VersionParserTokenManager tm) { |
| 339 | token_source = tm; |
| 340 | token = new Token(); |
| 341 | jj_ntk = -1; |
| 342 | jj_gen = 0; |
| 343 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 344 | } |
| 345 | |
| 346 | /** Reinitialise. */ |
| 347 | public void ReInit(VersionParserTokenManager tm) { |
| 348 | token_source = tm; |
| 349 | token = new Token(); |
| 350 | jj_ntk = -1; |
| 351 | jj_gen = 0; |
| 352 | for (int i = 0; i < 3; i++) jj_la1[i] = -1; |
| 353 | } |
| 354 | |
| 355 | private Token jj_consume_token(int kind) throws ParseException { |
| 356 | Token oldToken; |
| 357 | if ((oldToken = token).next != null) token = token.next; |
| 358 | else token = token.next = token_source.getNextToken(); |
| 359 | jj_ntk = -1; |
| 360 | if (token.kind == kind) { |
| 361 | jj_gen++; |
| 362 | return token; |
| 363 | } |
| 364 | token = oldToken; |
| 365 | jj_kind = kind; |
| 366 | throw generateParseException(); |
| 367 | } |
| 368 | |
| 369 | |
| 370 | /** Get the next Token. */ |
| 371 | final public Token getNextToken() { |
| 372 | if (token.next != null) token = token.next; |
| 373 | else token = token.next = token_source.getNextToken(); |
| 374 | jj_ntk = -1; |
| 375 | jj_gen++; |
| 376 | return token; |
| 377 | } |
| 378 | |
| 379 | /** Get the specific Token. */ |
| 380 | final public Token getToken(int index) { |
| 381 | Token t = token; |
| 382 | for (int i = 0; i < index; i++) { |
| 383 | if (t.next != null) t = t.next; |
| 384 | else t = t.next = token_source.getNextToken(); |
| 385 | } |
| 386 | return t; |
| 387 | } |
| 388 | |
| 389 | private int jj_ntk() { |
| 390 | if ((jj_nt=token.next) == null) |
| 391 | return (jj_ntk = (token.next=token_source.getNextToken()).kind); |
| 392 | else |
| 393 | return (jj_ntk = jj_nt.kind); |
| 394 | } |
| 395 | |
| 396 | private java.util.List jj_expentries = new java.util.ArrayList(); |
| 397 | private int[] jj_expentry; |
| 398 | private int jj_kind = -1; |
| 399 | |
| 400 | /** Generate ParseException. */ |
| 401 | public ParseException generateParseException() { |
| 402 | jj_expentries.clear(); |
| 403 | boolean[] la1tokens = new boolean[4]; |
| 404 | if (jj_kind >= 0) { |
| 405 | la1tokens[jj_kind] = true; |
| 406 | jj_kind = -1; |
| 407 | } |
| 408 | for (int i = 0; i < 3; i++) { |
| 409 | if (jj_la1[i] == jj_gen) { |
| 410 | for (int j = 0; j < 32; j++) { |
| 411 | if ((jj_la1_0[i] & (1<<j)) != 0) { |
| 412 | la1tokens[j] = true; |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | } |
| 417 | for (int i = 0; i < 4; i++) { |
| 418 | if (la1tokens[i]) { |
| 419 | jj_expentry = new int[1]; |
| 420 | jj_expentry[0] = i; |
| 421 | jj_expentries.add(jj_expentry); |
| 422 | } |
| 423 | } |
| 424 | int[][] exptokseq = new int[jj_expentries.size()][]; |
| 425 | for (int i = 0; i < jj_expentries.size(); i++) { |
| 426 | exptokseq[i] = (int[])jj_expentries.get(i); |
| 427 | } |
| 428 | return new ParseException(token, exptokseq, tokenImage); |
| 429 | } |
| 430 | |
| 431 | /** Enable tracing. */ |
| 432 | final public void enable_tracing() { |
| 433 | } |
| 434 | |
| 435 | /** Disable tracing. */ |
| 436 | final public void disable_tracing() { |
| 437 | } |
| 438 | |
| 439 | } |