Mercurial Hosting > luan
annotate src/goodjava/bbcode/BBCode.java @ 1705:a6e27c8e7ef4
bbcode now returns data
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 03 Jul 2022 21:59:38 -0600 |
| parents | 3a61451f8130 |
| children | 05d14db623b6 |
| 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 public final class Element { |
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15 public final String name; |
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16 public final String param; |
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17 public final Object contents; // String, Element, or List |
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18 public final Map<String,String> extra; |
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19 |
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20 private Element(String name,Object contents) { |
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21 this(name,null,contents); |
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22 } |
| 585 | 23 |
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24 private Element(String name,String param,Object contents) { |
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25 this(name,param,contents,null); |
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26 } |
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27 |
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28 private Element(String name,String param,Object contents,Map<String,String> extra) { |
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29 this.name = name.toLowerCase(); |
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30 this.param = param; |
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31 this.contents = contents; |
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32 this.extra = extra; |
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33 } |
| 585 | 34 } |
| 35 | |
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36 public static Object parse(String text) { |
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37 if( text.indexOf('[') == -1 ) |
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38 return text; |
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39 return new BBCode(text).parse(); |
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40 } |
| 585 | 41 |
| 1702 | 42 private final Parser parser; |
| 43 | |
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44 private BBCode(String text) { |
| 585 | 45 this.parser = new Parser(text); |
| 46 } | |
| 47 | |
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48 private Object parse() { |
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49 List list = new ArrayList(); |
| 1247 | 50 StringBuilder text = new StringBuilder(); |
| 585 | 51 while( !parser.endOfInput() ) { |
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52 Element block = parseBlock(); |
| 1247 | 53 if( block != null ) { |
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54 add(list,text); |
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55 list.add( block ); |
| 1247 | 56 } else { |
| 57 text.append( parser.currentChar() ); | |
| 585 | 58 parser.anyChar(); |
| 59 } | |
| 60 } | |
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61 add(list,text); |
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62 return list.size()==1 ? list.get(0) : list; |
| 585 | 63 } |
| 64 | |
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65 private Object parseWellFormed() { |
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66 List list = new ArrayList(); |
| 1247 | 67 StringBuilder text = new StringBuilder(); |
| 585 | 68 while( !parser.endOfInput() ) { |
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69 Element block = parseBlock(); |
| 585 | 70 if( block != null ) { |
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71 add(list,text); |
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72 list.add( block ); |
| 585 | 73 continue; |
| 74 } | |
| 75 if( couldBeTag() ) | |
| 76 break; | |
| 1247 | 77 text.append( parser.currentChar() ); |
| 585 | 78 parser.anyChar(); |
| 79 } | |
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80 add(list,text); |
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81 return list.size()==1 ? list.get(0) : list; |
| 585 | 82 } |
| 83 | |
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84 private void add(List list,StringBuilder text) { |
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85 if( text.length() > 0 ) { |
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86 list.add( text.toString() ); |
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87 text.setLength(0); |
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88 } |
| 1247 | 89 } |
| 90 | |
| 585 | 91 private boolean couldBeTag() { |
| 92 if( parser.currentChar() != '[' ) | |
| 93 return false; | |
| 94 return parser.testIgnoreCase("[b]") | |
| 95 || parser.testIgnoreCase("[/b]") | |
| 96 || parser.testIgnoreCase("[i]") | |
| 97 || parser.testIgnoreCase("[/i]") | |
| 98 || parser.testIgnoreCase("[u]") | |
| 99 || parser.testIgnoreCase("[/u]") | |
| 100 || parser.testIgnoreCase("[url]") | |
| 101 || parser.testIgnoreCase("[url=") | |
| 102 || parser.testIgnoreCase("[/url]") | |
| 103 || parser.testIgnoreCase("[code]") | |
| 104 || parser.testIgnoreCase("[/code]") | |
| 105 || parser.testIgnoreCase("[img]") | |
| 106 || parser.testIgnoreCase("[/img]") | |
| 107 || parser.testIgnoreCase("[color=") | |
| 108 || parser.testIgnoreCase("[/color]") | |
| 109 || parser.testIgnoreCase("[size=") | |
| 110 || parser.testIgnoreCase("[/size]") | |
| 1703 | 111 || parser.testIgnoreCase("[video]") |
| 112 || parser.testIgnoreCase("[/video]") | |
| 585 | 113 || parser.testIgnoreCase("[quote]") |
| 114 || parser.testIgnoreCase("[quote=") | |
| 115 || parser.testIgnoreCase("[/quote]") | |
| 116 ; | |
| 117 } | |
| 118 | |
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119 private Element parseBlock() { |
| 585 | 120 if( parser.currentChar() != '[' ) |
| 121 return null; | |
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122 Element s; |
| 585 | 123 s = parseB(); if(s!=null) return s; |
| 124 s = parseI(); if(s!=null) return s; | |
| 125 s = parseU(); if(s!=null) return s; | |
| 126 s = parseUrl1(); if(s!=null) return s; | |
| 127 s = parseUrl2(); if(s!=null) return s; | |
| 128 s = parseCode(); if(s!=null) return s; | |
| 129 s = parseImg(); if(s!=null) return s; | |
| 130 s = parseColor(); if(s!=null) return s; | |
| 131 s = parseSize(); if(s!=null) return s; | |
| 1703 | 132 s = parseVideo(); if(s!=null) return s; |
| 585 | 133 s = parseQuote1(); if(s!=null) return s; |
| 134 s = parseQuote2(); if(s!=null) return s; | |
| 135 return null; | |
| 136 } | |
| 137 | |
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138 private Element parseB() { |
| 585 | 139 parser.begin(); |
| 140 if( !parser.matchIgnoreCase("[b]") ) | |
| 141 return parser.failure(null); | |
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142 Object content = parseWellFormed(); |
| 585 | 143 if( !parser.matchIgnoreCase("[/b]") ) |
| 144 return parser.failure(null); | |
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145 Element rtn = new Element("b",content); |
| 585 | 146 return parser.success(rtn); |
| 147 } | |
| 148 | |
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149 private Element parseI() { |
| 585 | 150 parser.begin(); |
| 151 if( !parser.matchIgnoreCase("[i]") ) | |
| 152 return parser.failure(null); | |
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153 Object content = parseWellFormed(); |
| 585 | 154 if( !parser.matchIgnoreCase("[/i]") ) |
| 155 return parser.failure(null); | |
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156 Element rtn = new Element("i",content); |
| 585 | 157 return parser.success(rtn); |
| 158 } | |
| 159 | |
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160 private Element parseU() { |
| 585 | 161 parser.begin(); |
| 162 if( !parser.matchIgnoreCase("[u]") ) | |
| 163 return parser.failure(null); | |
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164 Object content = parseWellFormed(); |
| 585 | 165 if( !parser.matchIgnoreCase("[/u]") ) |
| 166 return parser.failure(null); | |
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167 Element rtn = new Element("u",content); |
| 585 | 168 return parser.success(rtn); |
| 169 } | |
| 170 | |
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171 private Element parseUrl1() { |
| 585 | 172 parser.begin(); |
| 173 if( !parser.matchIgnoreCase("[url]") ) | |
| 174 return parser.failure(null); | |
| 175 String url = parseRealUrl(); | |
| 176 if( !parser.matchIgnoreCase("[/url]") ) | |
| 177 return parser.failure(null); | |
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178 Element rtn = new Element("url",url); |
| 585 | 179 return parser.success(rtn); |
| 180 } | |
| 181 | |
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182 private Element parseUrl2() { |
| 585 | 183 parser.begin(); |
| 184 if( !parser.matchIgnoreCase("[url=") ) | |
| 185 return parser.failure(null); | |
| 186 String url = parseRealUrl(); | |
| 187 if( !parser.match(']') ) | |
| 188 return parser.failure(null); | |
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189 Object content = parseWellFormed(); |
| 585 | 190 if( !parser.matchIgnoreCase("[/url]") ) |
| 191 return parser.failure(null); | |
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192 Element rtn = new Element("url",url,content); |
| 585 | 193 return parser.success(rtn); |
| 194 } | |
| 195 | |
| 196 private String parseRealUrl() { | |
| 197 parser.begin(); | |
| 198 while( parser.match(' ') ); | |
| 199 int start = parser.currentIndex(); | |
| 200 if( !parser.matchIgnoreCase("http") ) | |
| 201 return parser.failure(null); | |
| 202 parser.matchIgnoreCase("s"); | |
| 203 if( !parser.matchIgnoreCase("://") ) | |
| 204 return parser.failure(null); | |
| 205 while( parser.noneOf(" []'") ); | |
| 206 String url = parser.textFrom(start); | |
| 207 while( parser.match(' ') ); | |
| 208 return parser.success(url); | |
| 209 } | |
| 210 | |
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211 private Element parseCode() { |
| 585 | 212 parser.begin(); |
| 213 if( !parser.matchIgnoreCase("[code]") ) | |
| 214 return parser.failure(null); | |
| 215 int start = parser.currentIndex(); | |
| 216 while( !parser.testIgnoreCase("[/code]") ) { | |
| 217 if( !parser.anyChar() ) | |
| 218 return parser.failure(null); | |
| 219 } | |
| 220 String content = parser.textFrom(start); | |
| 221 if( !parser.matchIgnoreCase("[/code]") ) throw new RuntimeException(); | |
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222 Element rtn = new Element("code",content); |
| 585 | 223 return parser.success(rtn); |
| 224 } | |
| 225 | |
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226 private Element parseImg() { |
| 585 | 227 parser.begin(); |
| 228 if( !parser.matchIgnoreCase("[img]") ) | |
| 229 return parser.failure(null); | |
| 230 String url = parseRealUrl(); | |
| 231 if( !parser.matchIgnoreCase("[/img]") ) | |
| 232 return parser.failure(null); | |
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233 Element rtn = new Element("img",url); |
| 585 | 234 return parser.success(rtn); |
| 235 } | |
| 236 | |
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237 private Element parseColor() { |
| 585 | 238 parser.begin(); |
| 239 if( !parser.matchIgnoreCase("[color=") ) | |
| 240 return parser.failure(null); | |
| 241 int start = parser.currentIndex(); | |
| 242 parser.match('#'); | |
| 243 while( parser.inCharRange('0','9') | |
| 244 || parser.inCharRange('a','z') | |
| 245 || parser.inCharRange('A','Z') | |
| 246 ); | |
| 247 String color = parser.textFrom(start); | |
| 248 if( !parser.match(']') ) | |
| 249 return parser.failure(null); | |
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250 Object content = parseWellFormed(); |
| 585 | 251 if( !parser.matchIgnoreCase("[/color]") ) |
| 252 return parser.failure(null); | |
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253 Element rtn = new Element("color",color,content); |
| 585 | 254 return parser.success(rtn); |
| 255 } | |
| 256 | |
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257 private Element parseSize() { |
| 585 | 258 parser.begin(); |
| 259 if( !parser.matchIgnoreCase("[size=") ) | |
| 260 return parser.failure(null); | |
| 261 int start = parser.currentIndex(); | |
| 262 while( parser.match('.') || parser.inCharRange('0','9') ); | |
| 263 String size = parser.textFrom(start); | |
| 264 if( !parser.match(']') ) | |
| 265 return parser.failure(null); | |
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266 Object content = parseWellFormed(); |
| 585 | 267 if( !parser.matchIgnoreCase("[/size]") ) |
| 268 return parser.failure(null); | |
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269 Element rtn = new Element("size",size,content); |
| 585 | 270 return parser.success(rtn); |
| 271 } | |
| 272 | |
| 1703 | 273 private static final Pattern youtubePtn1 = Pattern.compile("https://youtu.be/([a-zA-Z0-9_-]+)(?:\\?t=([0-9]+))?"); |
| 274 private static final Pattern youtubePtn2 = Pattern.compile("https://www.youtube.com/watch?v=([a-zA-Z0-9_-]+)(?:\\?t=([0-9]+)s)?"); | |
| 275 private static final Pattern bitchutePtn = Pattern.compile("https://www.bitchute.com/video/([a-zA-Z0-9]+)/"); | |
| 276 | |
| 277 private static Matcher find(Pattern ptn,String s) { | |
| 278 Matcher m = ptn.matcher(s); | |
| 279 return m.find() ? m : null; | |
| 280 } | |
| 281 | |
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282 private Element parseVideo() { |
| 585 | 283 parser.begin(); |
| 1703 | 284 if( !parser.matchIgnoreCase("[video]") ) |
| 285 return parser.failure(null); | |
| 286 String url = parseRealUrl(); | |
| 287 if( !parser.matchIgnoreCase("[/video]") ) | |
| 585 | 288 return parser.failure(null); |
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289 Map<String,String> extra = new LinkedHashMap<String,String>(); |
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290 Element rtn = new Element("video",null,url,extra); |
| 1703 | 291 Matcher m; |
| 292 m = find(youtubePtn1,url); | |
| 293 if( m == null ) | |
| 294 m = find(youtubePtn2,url); | |
| 295 if( m != null ) { | |
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296 extra.put( "site", "youtube" ); |
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297 extra.put( "id", m.group(1) ); |
| 1703 | 298 String t = m.group(2); |
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299 if( t != null ) |
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300 extra.put( "start", t ); |
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301 return parser.success(rtn); |
| 1703 | 302 } |
| 303 m = find(bitchutePtn,url); | |
| 304 if( m != null ) { | |
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305 extra.put( "site", "bitchute" ); |
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306 extra.put( "id", m.group(1) ); |
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307 return parser.success(rtn); |
| 1703 | 308 } |
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309 return parser.success(rtn); |
| 585 | 310 } |
| 311 | |
| 1703 | 312 |
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313 private Element parseQuote1() { |
| 585 | 314 parser.begin(); |
| 315 if( !parser.matchIgnoreCase("[quote]") ) | |
| 316 return parser.failure(null); | |
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317 Object content = parseWellFormed(); |
| 585 | 318 if( !parser.matchIgnoreCase("[/quote]") ) |
| 319 return parser.failure(null); | |
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320 Element rtn = new Element("quote",content); |
| 585 | 321 return parser.success(rtn); |
| 322 } | |
| 323 | |
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324 private Element parseQuote2() { |
| 585 | 325 parser.begin(); |
| 326 if( !parser.matchIgnoreCase("[quote=") ) | |
| 327 return parser.failure(null); | |
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328 List args = new ArrayList(); |
| 585 | 329 int start = parser.currentIndex(); |
| 1702 | 330 while( parser.noneOf("[]") ); |
| 585 | 331 String name = parser.textFrom(start).trim(); |
| 332 if( !parser.match(']') ) | |
| 333 return parser.failure(null); | |
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334 Object content = parseWellFormed(); |
| 585 | 335 if( !parser.matchIgnoreCase("[/quote]") ) |
| 336 return parser.failure(null); | |
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337 Element rtn = new Element("quote",name,content); |
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338 return parser.success(rtn); |
| 585 | 339 } |
| 340 | |
| 341 } |