Mercurial Hosting > luan
annotate src/goodjava/bbcode/BBCode.java @ 1716:b82767112d8e
add String.regex
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 24 Jul 2022 23:43:03 -0600 |
| parents | 31a82b0d0a87 |
| children | 6c9aea554691 |
| rev | line source |
|---|---|
| 1702 | 1 package goodjava.bbcode; |
| 585 | 2 |
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3 import java.util.List; |
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4 import java.util.ArrayList; |
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5 import java.util.Map; |
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6 import java.util.LinkedHashMap; |
| 1703 | 7 import java.util.regex.Pattern; |
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8 import goodjava.parser.Parser; |
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9 |
| 585 | 10 |
| 11 public final class BBCode { | |
| 12 | |
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13 private static final Pattern tagPtn = Pattern.compile( |
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14 "\\[(/?[a-zA-Z]+(=[^ \\n\\t\\[\\]]*)?)\\]" |
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15 ); |
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16 |
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17 public static String encode(String s) { |
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18 return tagPtn.matcher(s).replaceAll("[brackets]$1[/brackets]"); |
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19 } |
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20 |
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21 |
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22 public final class Element { |
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23 public final String name; |
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24 public final String param; |
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25 public final Object contents; // String, Element, or List |
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26 public final Map<String,String> extra; |
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27 |
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28 private Element(String name,Object contents) { |
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29 this(name,null,contents); |
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30 } |
| 585 | 31 |
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32 private Element(String name,String param,Object contents) { |
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33 this(name,param,contents,null); |
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34 } |
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35 |
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36 private Element(String name,String param,Object contents,Map<String,String> extra) { |
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37 this.name = name.toLowerCase(); |
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38 this.param = param; |
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39 this.contents = contents; |
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40 this.extra = extra; |
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41 } |
| 585 | 42 } |
| 43 | |
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44 public static Object parse(String text) { |
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45 if( text.indexOf('[') == -1 ) |
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46 return text; |
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47 return new BBCode(text).parse(); |
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48 } |
| 585 | 49 |
| 1702 | 50 private final Parser parser; |
| 51 | |
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52 private BBCode(String text) { |
| 585 | 53 this.parser = new Parser(text); |
| 54 } | |
| 55 | |
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56 private Object parse() { |
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57 List list = new ArrayList(); |
| 1247 | 58 StringBuilder text = new StringBuilder(); |
| 585 | 59 while( !parser.endOfInput() ) { |
| 1711 | 60 Element block = parseBlock(false); |
| 1247 | 61 if( block != null ) { |
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62 add(list,text); |
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63 list.add( block ); |
| 1247 | 64 } else { |
| 65 text.append( parser.currentChar() ); | |
| 585 | 66 parser.anyChar(); |
| 67 } | |
| 68 } | |
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69 add(list,text); |
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70 return list.size()==1 ? list.get(0) : list; |
| 585 | 71 } |
| 72 | |
| 1711 | 73 private Object parseUntil(String end) { |
| 74 return parseUntil(end,false); | |
| 75 } | |
| 76 | |
| 77 private Object parseUntil(String end,boolean inList) { | |
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78 List list = new ArrayList(); |
| 1247 | 79 StringBuilder text = new StringBuilder(); |
| 1711 | 80 while( !parser.matchIgnoreCase(end) ) { |
| 81 if( parser.endOfInput() ) | |
| 82 return null; | |
| 83 Element block = parseBlock(inList); | |
| 585 | 84 if( block != null ) { |
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85 add(list,text); |
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86 list.add( block ); |
| 1711 | 87 } else { |
| 88 text.append( parser.currentChar() ); | |
| 89 parser.anyChar(); | |
| 585 | 90 } |
| 91 } | |
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92 add(list,text); |
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93 return list.size()==1 ? list.get(0) : list; |
| 585 | 94 } |
| 95 | |
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96 private void add(List list,StringBuilder text) { |
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97 if( text.length() > 0 ) { |
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98 list.add( text.toString() ); |
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99 text.setLength(0); |
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100 } |
| 1247 | 101 } |
| 102 | |
| 1711 | 103 private Element parseBlock(boolean inList) { |
| 585 | 104 if( parser.currentChar() != '[' ) |
| 105 return null; | |
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106 Element s; |
| 585 | 107 s = parseB(); if(s!=null) return s; |
| 108 s = parseI(); if(s!=null) return s; | |
| 109 s = parseU(); if(s!=null) return s; | |
| 1711 | 110 s = parseS(); if(s!=null) return s; |
| 111 s = parseSup(); if(s!=null) return s; | |
| 112 s = parseBrackets(); if(s!=null) return s; | |
| 113 s = parseUrl(); if(s!=null) return s; | |
| 585 | 114 s = parseCode(); if(s!=null) return s; |
| 115 s = parseImg(); if(s!=null) return s; | |
| 116 s = parseColor(); if(s!=null) return s; | |
| 117 s = parseSize(); if(s!=null) return s; | |
| 1703 | 118 s = parseVideo(); if(s!=null) return s; |
| 1711 | 119 s = parseQuote(); if(s!=null) return s; |
| 120 s = parseUl(); if(s!=null) return s; | |
| 121 s = parseOl(); if(s!=null) return s; | |
| 122 if( inList ) { | |
| 123 s = parseLi(); if(s!=null) return s; | |
| 124 } | |
| 585 | 125 return null; |
| 126 } | |
| 127 | |
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128 private Element parseB() { |
| 585 | 129 parser.begin(); |
| 130 if( !parser.matchIgnoreCase("[b]") ) | |
| 131 return parser.failure(null); | |
| 1711 | 132 Object content = parseUntil("[/b]"); |
| 133 if( content==null ) | |
| 585 | 134 return parser.failure(null); |
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135 Element rtn = new Element("b",content); |
| 585 | 136 return parser.success(rtn); |
| 137 } | |
| 138 | |
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139 private Element parseI() { |
| 585 | 140 parser.begin(); |
| 141 if( !parser.matchIgnoreCase("[i]") ) | |
| 142 return parser.failure(null); | |
| 1711 | 143 Object content = parseUntil("[/i]"); |
| 144 if( content==null ) | |
| 585 | 145 return parser.failure(null); |
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146 Element rtn = new Element("i",content); |
| 585 | 147 return parser.success(rtn); |
| 148 } | |
| 149 | |
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150 private Element parseU() { |
| 585 | 151 parser.begin(); |
| 152 if( !parser.matchIgnoreCase("[u]") ) | |
| 153 return parser.failure(null); | |
| 1711 | 154 Object content = parseUntil("[/u]"); |
| 155 if( content==null ) | |
| 585 | 156 return parser.failure(null); |
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157 Element rtn = new Element("u",content); |
| 585 | 158 return parser.success(rtn); |
| 159 } | |
| 160 | |
| 1711 | 161 private Element parseS() { |
| 585 | 162 parser.begin(); |
| 1711 | 163 if( !parser.matchIgnoreCase("[s]") ) |
| 164 return parser.failure(null); | |
| 165 Object content = parseUntil("[/s]"); | |
| 166 if( content==null ) | |
| 585 | 167 return parser.failure(null); |
| 1711 | 168 Element rtn = new Element("s",content); |
| 169 return parser.success(rtn); | |
| 170 } | |
| 171 | |
| 172 private Element parseSup() { | |
| 173 parser.begin(); | |
| 174 if( !parser.matchIgnoreCase("[sup]") ) | |
| 585 | 175 return parser.failure(null); |
| 1711 | 176 Object content = parseUntil("[/sup]"); |
| 177 if( content==null ) | |
| 178 return parser.failure(null); | |
| 179 Element rtn = new Element("sup",content); | |
| 585 | 180 return parser.success(rtn); |
| 181 } | |
| 182 | |
| 1711 | 183 private Element parseBrackets() { |
| 585 | 184 parser.begin(); |
| 1711 | 185 if( !parser.matchIgnoreCase("[brackets]") ) |
| 186 return parser.failure(null); | |
| 187 Object content = parseUntil("[/brackets]"); | |
| 188 if( content==null ) | |
| 189 return parser.failure(null); | |
| 190 Element rtn = new Element("brackets",content); | |
| 191 return parser.success(rtn); | |
| 192 } | |
| 193 | |
| 194 private Element parseUrl() { | |
| 195 parser.begin(); | |
| 196 if( !parser.matchIgnoreCase("[url") ) | |
| 585 | 197 return parser.failure(null); |
| 1711 | 198 String url; |
| 199 Object content; | |
| 200 if( parser.match(']') ) { | |
| 201 url = parseRealUrl(); | |
| 202 content = null; | |
| 203 if( !parser.matchIgnoreCase("[/url]") ) | |
| 204 return parser.failure(null); | |
| 205 } else if( parser.match('=') ) { | |
| 206 url = parseRealUrl(); | |
| 207 if( !parser.match(']') ) | |
| 208 return parser.failure(null); | |
| 209 content = parseUntil("[/url]"); | |
| 210 if( content==null ) | |
| 211 return parser.failure(null); | |
| 212 } else | |
| 585 | 213 return parser.failure(null); |
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214 Element rtn = new Element("url",url,content); |
| 585 | 215 return parser.success(rtn); |
| 216 } | |
| 217 | |
| 218 private String parseRealUrl() { | |
| 219 parser.begin(); | |
| 220 while( parser.match(' ') ); | |
| 221 int start = parser.currentIndex(); | |
| 222 if( !parser.matchIgnoreCase("http") ) | |
| 223 return parser.failure(null); | |
| 224 parser.matchIgnoreCase("s"); | |
| 225 if( !parser.matchIgnoreCase("://") ) | |
| 226 return parser.failure(null); | |
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227 while( parser.noneOf(" \n\t[]") ); |
| 585 | 228 String url = parser.textFrom(start); |
| 229 while( parser.match(' ') ); | |
| 230 return parser.success(url); | |
| 231 } | |
| 232 | |
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233 private Element parseCode() { |
| 585 | 234 parser.begin(); |
| 1711 | 235 String param; |
| 236 String end; | |
| 237 if( !parser.matchIgnoreCase("[code") ) | |
| 238 return parser.failure(null); | |
| 239 if( parser.match(']') ) { | |
| 240 param = null; | |
| 241 end = "[/code]"; | |
| 242 } else if( parser.match('=') ) { | |
| 243 int start = parser.currentIndex(); | |
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244 while( parser.noneOf("[]\n") ); |
| 1711 | 245 param = parser.textFrom(start); |
| 246 if( !parser.match(']') ) | |
| 247 return parser.failure(null); | |
| 248 end = "[/code=" + param + "]"; | |
| 249 } else | |
| 585 | 250 return parser.failure(null); |
| 251 int start = parser.currentIndex(); | |
| 1711 | 252 while( !parser.testIgnoreCase(end) ) { |
| 585 | 253 if( !parser.anyChar() ) |
| 254 return parser.failure(null); | |
| 255 } | |
| 256 String content = parser.textFrom(start); | |
| 1711 | 257 if( !parser.matchIgnoreCase(end) ) throw new RuntimeException(); |
| 258 Element rtn = new Element("code",param,content); | |
| 585 | 259 return parser.success(rtn); |
| 260 } | |
| 261 | |
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262 private Element parseImg() { |
| 585 | 263 parser.begin(); |
| 264 if( !parser.matchIgnoreCase("[img]") ) | |
| 265 return parser.failure(null); | |
| 266 String url = parseRealUrl(); | |
| 267 if( !parser.matchIgnoreCase("[/img]") ) | |
| 268 return parser.failure(null); | |
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269 Element rtn = new Element("img",url); |
| 585 | 270 return parser.success(rtn); |
| 271 } | |
| 272 | |
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273 private Element parseColor() { |
| 585 | 274 parser.begin(); |
| 275 if( !parser.matchIgnoreCase("[color=") ) | |
| 276 return parser.failure(null); | |
| 277 int start = parser.currentIndex(); | |
| 278 while( parser.inCharRange('0','9') | |
| 279 || parser.inCharRange('a','z') | |
| 280 || parser.inCharRange('A','Z') | |
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281 || parser.anyOf("#(, )") |
| 585 | 282 ); |
| 283 String color = parser.textFrom(start); | |
| 284 if( !parser.match(']') ) | |
| 285 return parser.failure(null); | |
| 1711 | 286 Object content = parseUntil("[/color]"); |
| 287 if( content==null ) | |
| 585 | 288 return parser.failure(null); |
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289 Element rtn = new Element("color",color,content); |
| 585 | 290 return parser.success(rtn); |
| 291 } | |
| 292 | |
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293 private Element parseSize() { |
| 585 | 294 parser.begin(); |
| 295 if( !parser.matchIgnoreCase("[size=") ) | |
| 296 return parser.failure(null); | |
| 297 int start = parser.currentIndex(); | |
| 298 while( parser.match('.') || parser.inCharRange('0','9') ); | |
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299 if( parser.matchIgnoreCase("pt") || parser.match('%') ) |
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300 ; // ok |
| 585 | 301 String size = parser.textFrom(start); |
| 302 if( !parser.match(']') ) | |
| 303 return parser.failure(null); | |
| 1711 | 304 Object content = parseUntil("[/size]"); |
| 305 if( content==null ) | |
| 585 | 306 return parser.failure(null); |
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307 Element rtn = new Element("size",size,content); |
| 585 | 308 return parser.success(rtn); |
| 309 } | |
| 310 | |
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311 private Element parseVideo() { |
| 585 | 312 parser.begin(); |
| 1703 | 313 if( !parser.matchIgnoreCase("[video]") ) |
| 314 return parser.failure(null); | |
| 315 String url = parseRealUrl(); | |
| 316 if( !parser.matchIgnoreCase("[/video]") ) | |
| 585 | 317 return parser.failure(null); |
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318 Element rtn = new Element("video",null,url); |
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319 return parser.success(rtn); |
| 585 | 320 } |
| 321 | |
| 1703 | 322 |
| 1711 | 323 private Element parseQuote() { |
| 585 | 324 parser.begin(); |
| 1711 | 325 if( !parser.matchIgnoreCase("[quote") ) |
| 585 | 326 return parser.failure(null); |
| 1711 | 327 String name; |
| 328 if( parser.match(']') ) { | |
| 329 name = null; | |
| 330 } else if( parser.match('=') ) { | |
| 331 int start = parser.currentIndex(); | |
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332 while( parser.noneOf("[]\n") ); |
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333 name = parser.textFrom(start); |
| 1711 | 334 if( !parser.match(']') ) |
| 335 return parser.failure(null); | |
| 336 } else | |
| 585 | 337 return parser.failure(null); |
| 1711 | 338 Object content = parseUntil("[/quote]"); |
| 339 if( content==null ) | |
| 585 | 340 return parser.failure(null); |
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341 Element rtn = new Element("quote",name,content); |
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342 return parser.success(rtn); |
| 585 | 343 } |
| 344 | |
| 1711 | 345 |
| 346 private Element parseUl() { | |
| 347 parser.begin(); | |
| 348 if( !parser.matchIgnoreCase("[ul]") ) | |
| 349 return parser.failure(null); | |
| 350 Object content = parseUntil("[/ul]",true); | |
| 351 if( content==null ) | |
| 352 return parser.failure(null); | |
| 353 Element rtn = new Element("ul",content); | |
| 354 return parser.success(rtn); | |
| 355 } | |
| 356 | |
| 357 private Element parseOl() { | |
| 358 parser.begin(); | |
| 359 if( !parser.matchIgnoreCase("[ol]") ) | |
| 360 return parser.failure(null); | |
| 361 Object content = parseUntil("[/ol]",true); | |
| 362 if( content==null ) | |
| 363 return parser.failure(null); | |
| 364 Element rtn = new Element("ol",content); | |
| 365 return parser.success(rtn); | |
| 366 } | |
| 367 | |
| 368 private Element parseLi() { | |
| 369 parser.begin(); | |
| 370 if( !parser.matchIgnoreCase("[li]") ) | |
| 371 return parser.failure(null); | |
| 372 Object content = parseUntil("[/li]"); | |
| 373 if( content==null ) | |
| 374 return parser.failure(null); | |
| 375 Element rtn = new Element("li",content); | |
| 376 return parser.success(rtn); | |
| 377 } | |
| 378 | |
| 585 | 379 } |