Mercurial Hosting > luan
annotate core/src/luan/modules/parsers/BBCode.java @ 588:5fdbefa80146
BBCode now leaves it to CSS to handle quoted display
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Tue, 25 Aug 2015 10:07:37 -0600 |
| parents | bb3818249dfb |
| children | 6ea90dc10375 |
| rev | line source |
|---|---|
| 585 | 1 package luan.modules.parsers; |
| 2 | |
| 3 | |
| 4 public final class BBCode { | |
| 5 | |
| 6 public static String toHtml(String bbcode) { | |
| 7 return new BBCode(bbcode,true).parse(); | |
| 8 } | |
| 9 | |
| 10 public static String toText(String bbcode) { | |
| 11 return new BBCode(bbcode,false).parse(); | |
| 12 } | |
| 13 | |
| 14 private final Parser parser; | |
| 15 private final boolean toHtml; | |
| 16 | |
| 17 private BBCode(String text,boolean toHtml) { | |
| 18 this.parser = new Parser(text); | |
| 19 this.toHtml = toHtml; | |
| 20 } | |
| 21 | |
| 22 private String parse() { | |
| 23 StringBuilder sb = new StringBuilder(); | |
| 24 while( !parser.endOfInput() ) { | |
| 25 String block = parseBlock(); | |
| 26 if( block != null ) | |
| 27 sb.append(block); | |
| 28 else { | |
| 29 sb.append( parser.currentChar() ); | |
| 30 parser.anyChar(); | |
| 31 } | |
| 32 } | |
| 33 return sb.toString(); | |
| 34 } | |
| 35 | |
| 36 private String parseWellFormed() { | |
| 37 StringBuilder sb = new StringBuilder(); | |
| 38 while( !parser.endOfInput() ) { | |
| 39 String block = parseBlock(); | |
| 40 if( block != null ) { | |
| 41 sb.append(block); | |
| 42 continue; | |
| 43 } | |
| 44 if( couldBeTag() ) | |
| 45 break; | |
| 46 sb.append( parser.currentChar() ); | |
| 47 parser.anyChar(); | |
| 48 } | |
| 49 return sb.toString(); | |
| 50 } | |
| 51 | |
| 52 private boolean couldBeTag() { | |
| 53 if( parser.currentChar() != '[' ) | |
| 54 return false; | |
| 55 return parser.testIgnoreCase("[b]") | |
| 56 || parser.testIgnoreCase("[/b]") | |
| 57 || parser.testIgnoreCase("[i]") | |
| 58 || parser.testIgnoreCase("[/i]") | |
| 59 || parser.testIgnoreCase("[u]") | |
| 60 || parser.testIgnoreCase("[/u]") | |
| 61 || parser.testIgnoreCase("[url]") | |
| 62 || parser.testIgnoreCase("[url=") | |
| 63 || parser.testIgnoreCase("[/url]") | |
| 64 || parser.testIgnoreCase("[code]") | |
| 65 || parser.testIgnoreCase("[/code]") | |
| 66 || parser.testIgnoreCase("[img]") | |
| 67 || parser.testIgnoreCase("[/img]") | |
| 68 || parser.testIgnoreCase("[color=") | |
| 69 || parser.testIgnoreCase("[/color]") | |
| 70 || parser.testIgnoreCase("[size=") | |
| 71 || parser.testIgnoreCase("[/size]") | |
| 72 || parser.testIgnoreCase("[youtube]") | |
| 73 || parser.testIgnoreCase("[/youtube]") | |
| 74 || parser.testIgnoreCase("[quote]") | |
| 75 || parser.testIgnoreCase("[quote=") | |
| 76 || parser.testIgnoreCase("[/quote]") | |
| 77 ; | |
| 78 } | |
| 79 | |
| 80 private String parseBlock() { | |
| 81 if( parser.currentChar() != '[' ) | |
| 82 return null; | |
| 83 String s; | |
| 84 s = parseB(); if(s!=null) return s; | |
| 85 s = parseI(); if(s!=null) return s; | |
| 86 s = parseU(); if(s!=null) return s; | |
| 87 s = parseUrl1(); if(s!=null) return s; | |
| 88 s = parseUrl2(); if(s!=null) return s; | |
| 89 s = parseCode(); if(s!=null) return s; | |
| 90 s = parseImg(); if(s!=null) return s; | |
| 91 s = parseColor(); if(s!=null) return s; | |
| 92 s = parseSize(); if(s!=null) return s; | |
| 93 s = parseYouTube(); if(s!=null) return s; | |
| 94 s = parseQuote1(); if(s!=null) return s; | |
| 95 s = parseQuote2(); if(s!=null) return s; | |
| 96 return null; | |
| 97 } | |
| 98 | |
| 99 private String parseB() { | |
| 100 parser.begin(); | |
| 101 if( !parser.matchIgnoreCase("[b]") ) | |
| 102 return parser.failure(null); | |
| 103 String content = parseWellFormed(); | |
| 104 if( !parser.matchIgnoreCase("[/b]") ) | |
| 105 return parser.failure(null); | |
| 106 String rtn = toHtml ? "<b>"+content+"</b>" : content; | |
| 107 return parser.success(rtn); | |
| 108 } | |
| 109 | |
| 110 private String parseI() { | |
| 111 parser.begin(); | |
| 112 if( !parser.matchIgnoreCase("[i]") ) | |
| 113 return parser.failure(null); | |
| 114 String content = parseWellFormed(); | |
| 115 if( !parser.matchIgnoreCase("[/i]") ) | |
| 116 return parser.failure(null); | |
| 117 String rtn = toHtml ? "<i>"+content+"</i>" : content; | |
| 118 return parser.success(rtn); | |
| 119 } | |
| 120 | |
| 121 private String parseU() { | |
| 122 parser.begin(); | |
| 123 if( !parser.matchIgnoreCase("[u]") ) | |
| 124 return parser.failure(null); | |
| 125 String content = parseWellFormed(); | |
| 126 if( !parser.matchIgnoreCase("[/u]") ) | |
| 127 return parser.failure(null); | |
| 128 String rtn = toHtml ? "<u>"+content+"</u>" : content; | |
| 129 return parser.success(rtn); | |
| 130 } | |
| 131 | |
| 132 private String parseUrl1() { | |
| 133 parser.begin(); | |
| 134 if( !parser.matchIgnoreCase("[url]") ) | |
| 135 return parser.failure(null); | |
| 136 String url = parseRealUrl(); | |
| 137 if( !parser.matchIgnoreCase("[/url]") ) | |
| 138 return parser.failure(null); | |
| 139 String rtn = toHtml ? "<a href='"+url+"'>"+url+"</u>" : url; | |
| 140 return parser.success(rtn); | |
| 141 } | |
| 142 | |
| 143 private String parseUrl2() { | |
| 144 parser.begin(); | |
| 145 if( !parser.matchIgnoreCase("[url=") ) | |
| 146 return parser.failure(null); | |
| 147 String url = parseRealUrl(); | |
| 148 if( !parser.match(']') ) | |
| 149 return parser.failure(null); | |
| 150 String content = parseWellFormed(); | |
| 151 if( !parser.matchIgnoreCase("[/url]") ) | |
| 152 return parser.failure(null); | |
| 153 String rtn = toHtml ? "<a href='"+url+"'>"+content+"</u>" : content; | |
| 154 return parser.success(rtn); | |
| 155 } | |
| 156 | |
| 157 private String parseRealUrl() { | |
| 158 parser.begin(); | |
| 159 while( parser.match(' ') ); | |
| 160 int start = parser.currentIndex(); | |
| 161 if( !parser.matchIgnoreCase("http") ) | |
| 162 return parser.failure(null); | |
| 163 parser.matchIgnoreCase("s"); | |
| 164 if( !parser.matchIgnoreCase("://") ) | |
| 165 return parser.failure(null); | |
| 166 while( parser.noneOf(" []'") ); | |
| 167 String url = parser.textFrom(start); | |
| 168 while( parser.match(' ') ); | |
| 169 return parser.success(url); | |
| 170 } | |
| 171 | |
| 172 private String parseCode() { | |
| 173 parser.begin(); | |
| 174 if( !parser.matchIgnoreCase("[code]") ) | |
| 175 return parser.failure(null); | |
| 176 int start = parser.currentIndex(); | |
| 177 while( !parser.testIgnoreCase("[/code]") ) { | |
| 178 if( !parser.anyChar() ) | |
| 179 return parser.failure(null); | |
| 180 } | |
| 181 String content = parser.textFrom(start); | |
| 182 if( !parser.matchIgnoreCase("[/code]") ) throw new RuntimeException(); | |
| 183 String rtn = toHtml ? "<code>"+content+"</code>" : content; | |
| 184 return parser.success(rtn); | |
| 185 } | |
| 186 | |
| 187 private String parseImg() { | |
| 188 parser.begin(); | |
| 189 if( !parser.matchIgnoreCase("[img]") ) | |
| 190 return parser.failure(null); | |
| 191 String url = parseRealUrl(); | |
| 192 if( !parser.matchIgnoreCase("[/img]") ) | |
| 193 return parser.failure(null); | |
| 194 String rtn = toHtml ? "<img src='"+url+"'>" : ""; | |
| 195 return parser.success(rtn); | |
| 196 } | |
| 197 | |
| 198 private String parseColor() { | |
| 199 parser.begin(); | |
| 200 if( !parser.matchIgnoreCase("[color=") ) | |
| 201 return parser.failure(null); | |
| 202 int start = parser.currentIndex(); | |
| 203 parser.match('#'); | |
| 204 while( parser.inCharRange('0','9') | |
| 205 || parser.inCharRange('a','z') | |
| 206 || parser.inCharRange('A','Z') | |
| 207 ); | |
| 208 String color = parser.textFrom(start); | |
| 209 if( !parser.match(']') ) | |
| 210 return parser.failure(null); | |
| 211 String content = parseWellFormed(); | |
| 212 if( !parser.matchIgnoreCase("[/color]") ) | |
| 213 return parser.failure(null); | |
| 214 String rtn = toHtml ? "<span style='color: "+color+"'>"+content+"</span>" : content; | |
| 215 return parser.success(rtn); | |
| 216 } | |
| 217 | |
| 218 private String parseSize() { | |
| 219 parser.begin(); | |
| 220 if( !parser.matchIgnoreCase("[size=") ) | |
| 221 return parser.failure(null); | |
| 222 int start = parser.currentIndex(); | |
| 223 while( parser.match('.') || parser.inCharRange('0','9') ); | |
| 224 String size = parser.textFrom(start); | |
| 225 if( !parser.match(']') ) | |
| 226 return parser.failure(null); | |
| 227 String content = parseWellFormed(); | |
| 228 if( !parser.matchIgnoreCase("[/size]") ) | |
| 229 return parser.failure(null); | |
| 230 String rtn = toHtml ? "<span style='font-size: "+size+"em'>"+content+"</span>" : content; | |
| 231 return parser.success(rtn); | |
| 232 } | |
| 233 | |
| 234 private String parseYouTube() { | |
| 235 parser.begin(); | |
| 236 if( !parser.matchIgnoreCase("[youtube]") ) | |
| 237 return parser.failure(null); | |
| 238 int start = parser.currentIndex(); | |
| 239 while( parser.inCharRange('0','9') | |
| 240 || parser.inCharRange('a','z') | |
| 241 || parser.inCharRange('A','Z') | |
| 242 || parser.match('-') | |
| 243 || parser.match('_') | |
| 244 ); | |
| 245 String id = parser.textFrom(start); | |
| 246 if( id.length()==0 || !parser.matchIgnoreCase("[/youtube]") ) | |
| 247 return parser.failure(null); | |
| 248 String rtn = toHtml ? "<iframe width='420' height='315' src='https://www.youtube.com/embed/"+id+"' frameborder='0' allowfullscreen></iframe>" : ""; | |
| 249 return parser.success(rtn); | |
| 250 } | |
| 251 | |
| 252 private String parseQuote1() { | |
| 253 parser.begin(); | |
| 254 if( !parser.matchIgnoreCase("[quote]") ) | |
| 255 return parser.failure(null); | |
| 256 String content = parseWellFormed(); | |
| 257 if( !parser.matchIgnoreCase("[/quote]") ) | |
| 258 return parser.failure(null); | |
| 259 String rtn = toHtml ? "<blockquote>"+content+"</blockquote>" : ""; | |
| 260 return parser.success(rtn); | |
| 261 } | |
| 262 | |
| 263 private String parseQuote2() { | |
| 264 parser.begin(); | |
| 265 if( !parser.matchIgnoreCase("[quote=") ) | |
| 266 return parser.failure(null); | |
| 267 int start = parser.currentIndex(); | |
| 268 while( parser.noneOf("[];") ); | |
| 269 String name = parser.textFrom(start).trim(); | |
| 270 if( name.length() == 0 ) | |
| 271 return parser.failure(null); | |
| 272 String src = null; | |
| 273 if( parser.match(';') ) { | |
| 274 start = parser.currentIndex(); | |
| 275 while( parser.noneOf("[]'") ); | |
| 276 src = parser.textFrom(start).trim(); | |
| 277 if( src.length() == 0 ) | |
| 278 return parser.failure(null); | |
| 279 } | |
| 280 if( !parser.match(']') ) | |
| 281 return parser.failure(null); | |
| 282 String content = parseWellFormed(); | |
| 283 if( !parser.matchIgnoreCase("[/quote]") ) | |
| 284 return parser.failure(null); | |
| 285 if( !toHtml ) | |
| 286 return parser.success(""); | |
| 287 StringBuilder sb = new StringBuilder(); | |
| 288 sb.append( "<blockquote><div quoted>" ); | |
| 289 if( src != null ) | |
| 290 sb.append( "<a href='/thread?id=" ).append( src ).append( "'>" ); | |
|
588
5fdbefa80146
BBCode now leaves it to CSS to handle quoted display
Franklin Schmidt <fschmidt@gmail.com>
parents:
585
diff
changeset
|
291 sb.append( "<span quoted>" ).append( name ).append( "</span>" ); |
| 585 | 292 if( src != null ) |
| 293 sb.append( "</a>" ); | |
|
588
5fdbefa80146
BBCode now leaves it to CSS to handle quoted display
Franklin Schmidt <fschmidt@gmail.com>
parents:
585
diff
changeset
|
294 sb.append( "</div>" ).append( content ).append( "</blockquote>" ); |
| 585 | 295 return parser.success(sb.toString()); |
| 296 } | |
| 297 | |
| 298 } |