Mercurial Hosting > luan
annotate src/goodjava/bbcode/BBCode.java @ 1713:4d70e9543ef2
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Fri, 15 Jul 2022 11:55:27 -0600 |
| parents | 36c28be6d432 |
| children | 31a82b0d0a87 |
| 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.Matcher; |
| 8 import java.util.regex.Pattern; | |
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9 import goodjava.parser.Parser; |
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10 |
| 585 | 11 |
| 12 public final class BBCode { | |
| 13 | |
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14 private static final Pattern tagPtn = Pattern.compile( |
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15 "\\[(/?[a-zA-Z]+(=[^ \\n\\t\\[\\]]*)?)\\]" |
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16 ); |
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17 |
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18 public static String encode(String s) { |
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19 return tagPtn.matcher(s).replaceAll("[brackets]$1[/brackets]"); |
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20 } |
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21 |
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22 |
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23 public final class Element { |
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24 public final String name; |
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25 public final String param; |
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26 public final Object contents; // String, Element, or List |
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27 public final Map<String,String> extra; |
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28 |
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29 private Element(String name,Object contents) { |
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30 this(name,null,contents); |
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31 } |
| 585 | 32 |
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33 private Element(String name,String param,Object contents) { |
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34 this(name,param,contents,null); |
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35 } |
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36 |
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37 private Element(String name,String param,Object contents,Map<String,String> extra) { |
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38 this.name = name.toLowerCase(); |
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39 this.param = param; |
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40 this.contents = contents; |
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41 this.extra = extra; |
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42 } |
| 585 | 43 } |
| 44 | |
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45 public static Object parse(String text) { |
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46 if( text.indexOf('[') == -1 ) |
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47 return text; |
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48 return new BBCode(text).parse(); |
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49 } |
| 585 | 50 |
| 1702 | 51 private final Parser parser; |
| 52 | |
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53 private BBCode(String text) { |
| 585 | 54 this.parser = new Parser(text); |
| 55 } | |
| 56 | |
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57 private Object parse() { |
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58 List list = new ArrayList(); |
| 1247 | 59 StringBuilder text = new StringBuilder(); |
| 585 | 60 while( !parser.endOfInput() ) { |
| 1711 | 61 Element block = parseBlock(false); |
| 1247 | 62 if( block != null ) { |
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63 add(list,text); |
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64 list.add( block ); |
| 1247 | 65 } else { |
| 66 text.append( parser.currentChar() ); | |
| 585 | 67 parser.anyChar(); |
| 68 } | |
| 69 } | |
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70 add(list,text); |
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71 return list.size()==1 ? list.get(0) : list; |
| 585 | 72 } |
| 73 | |
| 1711 | 74 private Object parseUntil(String end) { |
| 75 return parseUntil(end,false); | |
| 76 } | |
| 77 | |
| 78 private Object parseUntil(String end,boolean inList) { | |
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79 List list = new ArrayList(); |
| 1247 | 80 StringBuilder text = new StringBuilder(); |
| 1711 | 81 while( !parser.matchIgnoreCase(end) ) { |
| 82 if( parser.endOfInput() ) | |
| 83 return null; | |
| 84 Element block = parseBlock(inList); | |
| 585 | 85 if( block != null ) { |
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86 add(list,text); |
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87 list.add( block ); |
| 1711 | 88 } else { |
| 89 text.append( parser.currentChar() ); | |
| 90 parser.anyChar(); | |
| 585 | 91 } |
| 92 } | |
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93 add(list,text); |
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94 return list.size()==1 ? list.get(0) : list; |
| 585 | 95 } |
| 96 | |
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97 private void add(List list,StringBuilder text) { |
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98 if( text.length() > 0 ) { |
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99 list.add( text.toString() ); |
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100 text.setLength(0); |
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101 } |
| 1247 | 102 } |
| 103 | |
| 1711 | 104 private Element parseBlock(boolean inList) { |
| 585 | 105 if( parser.currentChar() != '[' ) |
| 106 return null; | |
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107 Element s; |
| 585 | 108 s = parseB(); if(s!=null) return s; |
| 109 s = parseI(); if(s!=null) return s; | |
| 110 s = parseU(); if(s!=null) return s; | |
| 1711 | 111 s = parseS(); if(s!=null) return s; |
| 112 s = parseSup(); if(s!=null) return s; | |
| 113 s = parseBrackets(); if(s!=null) return s; | |
| 114 s = parseUrl(); if(s!=null) return s; | |
| 585 | 115 s = parseCode(); if(s!=null) return s; |
| 116 s = parseImg(); if(s!=null) return s; | |
| 117 s = parseColor(); if(s!=null) return s; | |
| 118 s = parseSize(); if(s!=null) return s; | |
| 1703 | 119 s = parseVideo(); if(s!=null) return s; |
| 1711 | 120 s = parseQuote(); if(s!=null) return s; |
| 121 s = parseUl(); if(s!=null) return s; | |
| 122 s = parseOl(); if(s!=null) return s; | |
| 123 if( inList ) { | |
| 124 s = parseLi(); if(s!=null) return s; | |
| 125 } | |
| 585 | 126 return null; |
| 127 } | |
| 128 | |
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129 private Element parseB() { |
| 585 | 130 parser.begin(); |
| 131 if( !parser.matchIgnoreCase("[b]") ) | |
| 132 return parser.failure(null); | |
| 1711 | 133 Object content = parseUntil("[/b]"); |
| 134 if( content==null ) | |
| 585 | 135 return parser.failure(null); |
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136 Element rtn = new Element("b",content); |
| 585 | 137 return parser.success(rtn); |
| 138 } | |
| 139 | |
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140 private Element parseI() { |
| 585 | 141 parser.begin(); |
| 142 if( !parser.matchIgnoreCase("[i]") ) | |
| 143 return parser.failure(null); | |
| 1711 | 144 Object content = parseUntil("[/i]"); |
| 145 if( content==null ) | |
| 585 | 146 return parser.failure(null); |
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147 Element rtn = new Element("i",content); |
| 585 | 148 return parser.success(rtn); |
| 149 } | |
| 150 | |
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151 private Element parseU() { |
| 585 | 152 parser.begin(); |
| 153 if( !parser.matchIgnoreCase("[u]") ) | |
| 154 return parser.failure(null); | |
| 1711 | 155 Object content = parseUntil("[/u]"); |
| 156 if( content==null ) | |
| 585 | 157 return parser.failure(null); |
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158 Element rtn = new Element("u",content); |
| 585 | 159 return parser.success(rtn); |
| 160 } | |
| 161 | |
| 1711 | 162 private Element parseS() { |
| 585 | 163 parser.begin(); |
| 1711 | 164 if( !parser.matchIgnoreCase("[s]") ) |
| 165 return parser.failure(null); | |
| 166 Object content = parseUntil("[/s]"); | |
| 167 if( content==null ) | |
| 585 | 168 return parser.failure(null); |
| 1711 | 169 Element rtn = new Element("s",content); |
| 170 return parser.success(rtn); | |
| 171 } | |
| 172 | |
| 173 private Element parseSup() { | |
| 174 parser.begin(); | |
| 175 if( !parser.matchIgnoreCase("[sup]") ) | |
| 585 | 176 return parser.failure(null); |
| 1711 | 177 Object content = parseUntil("[/sup]"); |
| 178 if( content==null ) | |
| 179 return parser.failure(null); | |
| 180 Element rtn = new Element("sup",content); | |
| 585 | 181 return parser.success(rtn); |
| 182 } | |
| 183 | |
| 1711 | 184 private Element parseBrackets() { |
| 585 | 185 parser.begin(); |
| 1711 | 186 if( !parser.matchIgnoreCase("[brackets]") ) |
| 187 return parser.failure(null); | |
| 188 Object content = parseUntil("[/brackets]"); | |
| 189 if( content==null ) | |
| 190 return parser.failure(null); | |
| 191 Element rtn = new Element("brackets",content); | |
| 192 return parser.success(rtn); | |
| 193 } | |
| 194 | |
| 195 private Element parseUrl() { | |
| 196 parser.begin(); | |
| 197 if( !parser.matchIgnoreCase("[url") ) | |
| 585 | 198 return parser.failure(null); |
| 1711 | 199 String url; |
| 200 Object content; | |
| 201 if( parser.match(']') ) { | |
| 202 url = parseRealUrl(); | |
| 203 content = null; | |
| 204 if( !parser.matchIgnoreCase("[/url]") ) | |
| 205 return parser.failure(null); | |
| 206 } else if( parser.match('=') ) { | |
| 207 url = parseRealUrl(); | |
| 208 if( !parser.match(']') ) | |
| 209 return parser.failure(null); | |
| 210 content = parseUntil("[/url]"); | |
| 211 if( content==null ) | |
| 212 return parser.failure(null); | |
| 213 } else | |
| 585 | 214 return parser.failure(null); |
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215 Element rtn = new Element("url",url,content); |
| 585 | 216 return parser.success(rtn); |
| 217 } | |
| 218 | |
| 219 private String parseRealUrl() { | |
| 220 parser.begin(); | |
| 221 while( parser.match(' ') ); | |
| 222 int start = parser.currentIndex(); | |
| 223 if( !parser.matchIgnoreCase("http") ) | |
| 224 return parser.failure(null); | |
| 225 parser.matchIgnoreCase("s"); | |
| 226 if( !parser.matchIgnoreCase("://") ) | |
| 227 return parser.failure(null); | |
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228 while( parser.noneOf(" \n\t[]") ); |
| 585 | 229 String url = parser.textFrom(start); |
| 230 while( parser.match(' ') ); | |
| 231 return parser.success(url); | |
| 232 } | |
| 233 | |
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234 private Element parseCode() { |
| 585 | 235 parser.begin(); |
| 1711 | 236 String param; |
| 237 String end; | |
| 238 if( !parser.matchIgnoreCase("[code") ) | |
| 239 return parser.failure(null); | |
| 240 if( parser.match(']') ) { | |
| 241 param = null; | |
| 242 end = "[/code]"; | |
| 243 } else if( parser.match('=') ) { | |
| 244 int start = parser.currentIndex(); | |
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245 while( parser.noneOf("[]\n") ); |
| 1711 | 246 param = parser.textFrom(start); |
| 247 if( !parser.match(']') ) | |
| 248 return parser.failure(null); | |
| 249 end = "[/code=" + param + "]"; | |
| 250 } else | |
| 585 | 251 return parser.failure(null); |
| 252 int start = parser.currentIndex(); | |
| 1711 | 253 while( !parser.testIgnoreCase(end) ) { |
| 585 | 254 if( !parser.anyChar() ) |
| 255 return parser.failure(null); | |
| 256 } | |
| 257 String content = parser.textFrom(start); | |
| 1711 | 258 if( !parser.matchIgnoreCase(end) ) throw new RuntimeException(); |
| 259 Element rtn = new Element("code",param,content); | |
| 585 | 260 return parser.success(rtn); |
| 261 } | |
| 262 | |
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263 private Element parseImg() { |
| 585 | 264 parser.begin(); |
| 265 if( !parser.matchIgnoreCase("[img]") ) | |
| 266 return parser.failure(null); | |
| 267 String url = parseRealUrl(); | |
| 268 if( !parser.matchIgnoreCase("[/img]") ) | |
| 269 return parser.failure(null); | |
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270 Element rtn = new Element("img",url); |
| 585 | 271 return parser.success(rtn); |
| 272 } | |
| 273 | |
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274 private Element parseColor() { |
| 585 | 275 parser.begin(); |
| 276 if( !parser.matchIgnoreCase("[color=") ) | |
| 277 return parser.failure(null); | |
| 278 int start = parser.currentIndex(); | |
| 279 parser.match('#'); | |
| 280 while( parser.inCharRange('0','9') | |
| 281 || parser.inCharRange('a','z') | |
| 282 || parser.inCharRange('A','Z') | |
| 283 ); | |
| 284 String color = parser.textFrom(start); | |
| 285 if( !parser.match(']') ) | |
| 286 return parser.failure(null); | |
| 1711 | 287 Object content = parseUntil("[/color]"); |
| 288 if( content==null ) | |
| 585 | 289 return parser.failure(null); |
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290 Element rtn = new Element("color",color,content); |
| 585 | 291 return parser.success(rtn); |
| 292 } | |
| 293 | |
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294 private Element parseSize() { |
| 585 | 295 parser.begin(); |
| 296 if( !parser.matchIgnoreCase("[size=") ) | |
| 297 return parser.failure(null); | |
| 298 int start = parser.currentIndex(); | |
| 299 while( parser.match('.') || parser.inCharRange('0','9') ); | |
| 300 String size = parser.textFrom(start); | |
| 301 if( !parser.match(']') ) | |
| 302 return parser.failure(null); | |
| 1711 | 303 Object content = parseUntil("[/size]"); |
| 304 if( content==null ) | |
| 585 | 305 return parser.failure(null); |
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306 Element rtn = new Element("size",size,content); |
| 585 | 307 return parser.success(rtn); |
| 308 } | |
| 309 | |
| 1703 | 310 private static final Pattern youtubePtn1 = Pattern.compile("https://youtu.be/([a-zA-Z0-9_-]+)(?:\\?t=([0-9]+))?"); |
| 311 private static final Pattern youtubePtn2 = Pattern.compile("https://www.youtube.com/watch?v=([a-zA-Z0-9_-]+)(?:\\?t=([0-9]+)s)?"); | |
| 312 private static final Pattern bitchutePtn = Pattern.compile("https://www.bitchute.com/video/([a-zA-Z0-9]+)/"); | |
| 313 | |
| 314 private static Matcher find(Pattern ptn,String s) { | |
| 315 Matcher m = ptn.matcher(s); | |
| 316 return m.find() ? m : null; | |
| 317 } | |
| 318 | |
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319 private Element parseVideo() { |
| 585 | 320 parser.begin(); |
| 1703 | 321 if( !parser.matchIgnoreCase("[video]") ) |
| 322 return parser.failure(null); | |
| 323 String url = parseRealUrl(); | |
| 324 if( !parser.matchIgnoreCase("[/video]") ) | |
| 585 | 325 return parser.failure(null); |
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326 Map<String,String> extra = new LinkedHashMap<String,String>(); |
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327 Element rtn = new Element("video",null,url,extra); |
| 1703 | 328 Matcher m; |
| 329 m = find(youtubePtn1,url); | |
| 330 if( m == null ) | |
| 331 m = find(youtubePtn2,url); | |
| 332 if( m != null ) { | |
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333 extra.put( "site", "youtube" ); |
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334 extra.put( "id", m.group(1) ); |
| 1703 | 335 String t = m.group(2); |
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336 if( t != null ) |
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337 extra.put( "start", t ); |
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338 return parser.success(rtn); |
| 1703 | 339 } |
| 340 m = find(bitchutePtn,url); | |
| 341 if( m != null ) { | |
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342 extra.put( "site", "bitchute" ); |
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343 extra.put( "id", m.group(1) ); |
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344 return parser.success(rtn); |
| 1703 | 345 } |
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346 return parser.success(rtn); |
| 585 | 347 } |
| 348 | |
| 1703 | 349 |
| 1711 | 350 private Element parseQuote() { |
| 585 | 351 parser.begin(); |
| 1711 | 352 if( !parser.matchIgnoreCase("[quote") ) |
| 585 | 353 return parser.failure(null); |
| 1711 | 354 String name; |
| 355 if( parser.match(']') ) { | |
| 356 name = null; | |
| 357 } else if( parser.match('=') ) { | |
| 358 int start = parser.currentIndex(); | |
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359 while( parser.noneOf("[]\n") ); |
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360 name = parser.textFrom(start); |
| 1711 | 361 if( !parser.match(']') ) |
| 362 return parser.failure(null); | |
| 363 } else | |
| 585 | 364 return parser.failure(null); |
| 1711 | 365 Object content = parseUntil("[/quote]"); |
| 366 if( content==null ) | |
| 585 | 367 return parser.failure(null); |
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368 Element rtn = new Element("quote",name,content); |
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369 return parser.success(rtn); |
| 585 | 370 } |
| 371 | |
| 1711 | 372 |
| 373 private Element parseUl() { | |
| 374 parser.begin(); | |
| 375 if( !parser.matchIgnoreCase("[ul]") ) | |
| 376 return parser.failure(null); | |
| 377 Object content = parseUntil("[/ul]",true); | |
| 378 if( content==null ) | |
| 379 return parser.failure(null); | |
| 380 Element rtn = new Element("ul",content); | |
| 381 return parser.success(rtn); | |
| 382 } | |
| 383 | |
| 384 private Element parseOl() { | |
| 385 parser.begin(); | |
| 386 if( !parser.matchIgnoreCase("[ol]") ) | |
| 387 return parser.failure(null); | |
| 388 Object content = parseUntil("[/ol]",true); | |
| 389 if( content==null ) | |
| 390 return parser.failure(null); | |
| 391 Element rtn = new Element("ol",content); | |
| 392 return parser.success(rtn); | |
| 393 } | |
| 394 | |
| 395 private Element parseLi() { | |
| 396 parser.begin(); | |
| 397 if( !parser.matchIgnoreCase("[li]") ) | |
| 398 return parser.failure(null); | |
| 399 Object content = parseUntil("[/li]"); | |
| 400 if( content==null ) | |
| 401 return parser.failure(null); | |
| 402 Element rtn = new Element("li",content); | |
| 403 return parser.success(rtn); | |
| 404 } | |
| 405 | |
| 585 | 406 } |