Mercurial Hosting > luan
annotate core/src/luan/modules/parsers/BBCode.java @ 638:3ab4f282f0bd 0.16
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 03 Mar 2016 22:52:41 -0700 |
| parents | 6ea90dc10375 |
| children | cdc70de628b5 |
| rev | line source |
|---|---|
| 585 | 1 package luan.modules.parsers; |
| 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 luan.Luan; |
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6 import luan.LuanState; |
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7 import luan.LuanFunction; |
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8 import luan.LuanException; |
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9 import luan.modules.Utils; |
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10 |
| 585 | 11 |
| 12 public final class BBCode { | |
| 13 | |
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14 public static String toHtml(LuanState luan,String bbcode,LuanFunction quoter) throws LuanException { |
| 638 | 15 return new BBCode(luan,bbcode,quoter,true).parse(); |
| 585 | 16 } |
| 17 | |
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18 public static String toText(LuanState luan,String bbcode,LuanFunction quoter) throws LuanException { |
| 638 | 19 return new BBCode(luan,bbcode,quoter,false).parse(); |
| 585 | 20 } |
| 21 | |
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22 private final LuanState luan; |
| 585 | 23 private final Parser parser; |
| 638 | 24 private final LuanFunction quoter; |
| 585 | 25 private final boolean toHtml; |
| 26 | |
| 638 | 27 private BBCode(LuanState luan,String text,LuanFunction quoter,boolean toHtml) throws LuanException { |
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28 Utils.checkNotNull(luan,text,1); |
| 638 | 29 Utils.checkNotNull(luan,quoter,2); |
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30 this.luan = luan; |
| 585 | 31 this.parser = new Parser(text); |
| 638 | 32 this.quoter = quoter; |
| 585 | 33 this.toHtml = toHtml; |
| 34 } | |
| 35 | |
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36 private String parse() throws LuanException { |
| 585 | 37 StringBuilder sb = new StringBuilder(); |
| 38 while( !parser.endOfInput() ) { | |
| 39 String block = parseBlock(); | |
| 40 if( block != null ) | |
| 41 sb.append(block); | |
| 42 else { | |
| 43 sb.append( parser.currentChar() ); | |
| 44 parser.anyChar(); | |
| 45 } | |
| 46 } | |
| 47 return sb.toString(); | |
| 48 } | |
| 49 | |
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50 private String parseWellFormed() throws LuanException { |
| 585 | 51 StringBuilder sb = new StringBuilder(); |
| 52 while( !parser.endOfInput() ) { | |
| 53 String block = parseBlock(); | |
| 54 if( block != null ) { | |
| 55 sb.append(block); | |
| 56 continue; | |
| 57 } | |
| 58 if( couldBeTag() ) | |
| 59 break; | |
| 60 sb.append( parser.currentChar() ); | |
| 61 parser.anyChar(); | |
| 62 } | |
| 63 return sb.toString(); | |
| 64 } | |
| 65 | |
| 66 private boolean couldBeTag() { | |
| 67 if( parser.currentChar() != '[' ) | |
| 68 return false; | |
| 69 return parser.testIgnoreCase("[b]") | |
| 70 || parser.testIgnoreCase("[/b]") | |
| 71 || parser.testIgnoreCase("[i]") | |
| 72 || parser.testIgnoreCase("[/i]") | |
| 73 || parser.testIgnoreCase("[u]") | |
| 74 || parser.testIgnoreCase("[/u]") | |
| 75 || parser.testIgnoreCase("[url]") | |
| 76 || parser.testIgnoreCase("[url=") | |
| 77 || parser.testIgnoreCase("[/url]") | |
| 78 || parser.testIgnoreCase("[code]") | |
| 79 || parser.testIgnoreCase("[/code]") | |
| 80 || parser.testIgnoreCase("[img]") | |
| 81 || parser.testIgnoreCase("[/img]") | |
| 82 || parser.testIgnoreCase("[color=") | |
| 83 || parser.testIgnoreCase("[/color]") | |
| 84 || parser.testIgnoreCase("[size=") | |
| 85 || parser.testIgnoreCase("[/size]") | |
| 86 || parser.testIgnoreCase("[youtube]") | |
| 87 || parser.testIgnoreCase("[/youtube]") | |
| 88 || parser.testIgnoreCase("[quote]") | |
| 89 || parser.testIgnoreCase("[quote=") | |
| 90 || parser.testIgnoreCase("[/quote]") | |
| 91 ; | |
| 92 } | |
| 93 | |
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94 private String parseBlock() throws LuanException { |
| 585 | 95 if( parser.currentChar() != '[' ) |
| 96 return null; | |
| 97 String s; | |
| 98 s = parseB(); if(s!=null) return s; | |
| 99 s = parseI(); if(s!=null) return s; | |
| 100 s = parseU(); if(s!=null) return s; | |
| 101 s = parseUrl1(); if(s!=null) return s; | |
| 102 s = parseUrl2(); if(s!=null) return s; | |
| 103 s = parseCode(); if(s!=null) return s; | |
| 104 s = parseImg(); if(s!=null) return s; | |
| 105 s = parseColor(); if(s!=null) return s; | |
| 106 s = parseSize(); if(s!=null) return s; | |
| 107 s = parseYouTube(); if(s!=null) return s; | |
| 108 s = parseQuote1(); if(s!=null) return s; | |
| 109 s = parseQuote2(); if(s!=null) return s; | |
| 110 return null; | |
| 111 } | |
| 112 | |
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113 private String parseB() throws LuanException { |
| 585 | 114 parser.begin(); |
| 115 if( !parser.matchIgnoreCase("[b]") ) | |
| 116 return parser.failure(null); | |
| 117 String content = parseWellFormed(); | |
| 118 if( !parser.matchIgnoreCase("[/b]") ) | |
| 119 return parser.failure(null); | |
| 120 String rtn = toHtml ? "<b>"+content+"</b>" : content; | |
| 121 return parser.success(rtn); | |
| 122 } | |
| 123 | |
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124 private String parseI() throws LuanException { |
| 585 | 125 parser.begin(); |
| 126 if( !parser.matchIgnoreCase("[i]") ) | |
| 127 return parser.failure(null); | |
| 128 String content = parseWellFormed(); | |
| 129 if( !parser.matchIgnoreCase("[/i]") ) | |
| 130 return parser.failure(null); | |
| 131 String rtn = toHtml ? "<i>"+content+"</i>" : content; | |
| 132 return parser.success(rtn); | |
| 133 } | |
| 134 | |
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parents:
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diff
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135 private String parseU() throws LuanException { |
| 585 | 136 parser.begin(); |
| 137 if( !parser.matchIgnoreCase("[u]") ) | |
| 138 return parser.failure(null); | |
| 139 String content = parseWellFormed(); | |
| 140 if( !parser.matchIgnoreCase("[/u]") ) | |
| 141 return parser.failure(null); | |
| 142 String rtn = toHtml ? "<u>"+content+"</u>" : content; | |
| 143 return parser.success(rtn); | |
| 144 } | |
| 145 | |
| 146 private String parseUrl1() { | |
| 147 parser.begin(); | |
| 148 if( !parser.matchIgnoreCase("[url]") ) | |
| 149 return parser.failure(null); | |
| 150 String url = parseRealUrl(); | |
| 151 if( !parser.matchIgnoreCase("[/url]") ) | |
| 152 return parser.failure(null); | |
| 153 String rtn = toHtml ? "<a href='"+url+"'>"+url+"</u>" : url; | |
| 154 return parser.success(rtn); | |
| 155 } | |
| 156 | |
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parents:
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diff
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157 private String parseUrl2() throws LuanException { |
| 585 | 158 parser.begin(); |
| 159 if( !parser.matchIgnoreCase("[url=") ) | |
| 160 return parser.failure(null); | |
| 161 String url = parseRealUrl(); | |
| 162 if( !parser.match(']') ) | |
| 163 return parser.failure(null); | |
| 164 String content = parseWellFormed(); | |
| 165 if( !parser.matchIgnoreCase("[/url]") ) | |
| 166 return parser.failure(null); | |
| 167 String rtn = toHtml ? "<a href='"+url+"'>"+content+"</u>" : content; | |
| 168 return parser.success(rtn); | |
| 169 } | |
| 170 | |
| 171 private String parseRealUrl() { | |
| 172 parser.begin(); | |
| 173 while( parser.match(' ') ); | |
| 174 int start = parser.currentIndex(); | |
| 175 if( !parser.matchIgnoreCase("http") ) | |
| 176 return parser.failure(null); | |
| 177 parser.matchIgnoreCase("s"); | |
| 178 if( !parser.matchIgnoreCase("://") ) | |
| 179 return parser.failure(null); | |
| 180 while( parser.noneOf(" []'") ); | |
| 181 String url = parser.textFrom(start); | |
| 182 while( parser.match(' ') ); | |
| 183 return parser.success(url); | |
| 184 } | |
| 185 | |
| 186 private String parseCode() { | |
| 187 parser.begin(); | |
| 188 if( !parser.matchIgnoreCase("[code]") ) | |
| 189 return parser.failure(null); | |
| 190 int start = parser.currentIndex(); | |
| 191 while( !parser.testIgnoreCase("[/code]") ) { | |
| 192 if( !parser.anyChar() ) | |
| 193 return parser.failure(null); | |
| 194 } | |
| 195 String content = parser.textFrom(start); | |
| 196 if( !parser.matchIgnoreCase("[/code]") ) throw new RuntimeException(); | |
| 197 String rtn = toHtml ? "<code>"+content+"</code>" : content; | |
| 198 return parser.success(rtn); | |
| 199 } | |
| 200 | |
| 201 private String parseImg() { | |
| 202 parser.begin(); | |
| 203 if( !parser.matchIgnoreCase("[img]") ) | |
| 204 return parser.failure(null); | |
| 205 String url = parseRealUrl(); | |
| 206 if( !parser.matchIgnoreCase("[/img]") ) | |
| 207 return parser.failure(null); | |
| 208 String rtn = toHtml ? "<img src='"+url+"'>" : ""; | |
| 209 return parser.success(rtn); | |
| 210 } | |
| 211 | |
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parents:
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diff
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212 private String parseColor() throws LuanException { |
| 585 | 213 parser.begin(); |
| 214 if( !parser.matchIgnoreCase("[color=") ) | |
| 215 return parser.failure(null); | |
| 216 int start = parser.currentIndex(); | |
| 217 parser.match('#'); | |
| 218 while( parser.inCharRange('0','9') | |
| 219 || parser.inCharRange('a','z') | |
| 220 || parser.inCharRange('A','Z') | |
| 221 ); | |
| 222 String color = parser.textFrom(start); | |
| 223 if( !parser.match(']') ) | |
| 224 return parser.failure(null); | |
| 225 String content = parseWellFormed(); | |
| 226 if( !parser.matchIgnoreCase("[/color]") ) | |
| 227 return parser.failure(null); | |
| 228 String rtn = toHtml ? "<span style='color: "+color+"'>"+content+"</span>" : content; | |
| 229 return parser.success(rtn); | |
| 230 } | |
| 231 | |
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parents:
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diff
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232 private String parseSize() throws LuanException { |
| 585 | 233 parser.begin(); |
| 234 if( !parser.matchIgnoreCase("[size=") ) | |
| 235 return parser.failure(null); | |
| 236 int start = parser.currentIndex(); | |
| 237 while( parser.match('.') || parser.inCharRange('0','9') ); | |
| 238 String size = parser.textFrom(start); | |
| 239 if( !parser.match(']') ) | |
| 240 return parser.failure(null); | |
| 241 String content = parseWellFormed(); | |
| 242 if( !parser.matchIgnoreCase("[/size]") ) | |
| 243 return parser.failure(null); | |
| 244 String rtn = toHtml ? "<span style='font-size: "+size+"em'>"+content+"</span>" : content; | |
| 245 return parser.success(rtn); | |
| 246 } | |
| 247 | |
| 248 private String parseYouTube() { | |
| 249 parser.begin(); | |
| 250 if( !parser.matchIgnoreCase("[youtube]") ) | |
| 251 return parser.failure(null); | |
| 252 int start = parser.currentIndex(); | |
| 253 while( parser.inCharRange('0','9') | |
| 254 || parser.inCharRange('a','z') | |
| 255 || parser.inCharRange('A','Z') | |
| 256 || parser.match('-') | |
| 257 || parser.match('_') | |
| 258 ); | |
| 259 String id = parser.textFrom(start); | |
| 260 if( id.length()==0 || !parser.matchIgnoreCase("[/youtube]") ) | |
| 261 return parser.failure(null); | |
| 262 String rtn = toHtml ? "<iframe width='420' height='315' src='https://www.youtube.com/embed/"+id+"' frameborder='0' allowfullscreen></iframe>" : ""; | |
| 263 return parser.success(rtn); | |
| 264 } | |
| 265 | |
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parents:
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266 private String quote(Object... args) throws LuanException { |
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267 Object obj = quoter.call(luan,args); |
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268 if( !(obj instanceof String) ) |
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269 throw new LuanException(luan,"BBCode quoter function returned "+Luan.type(obj)+" but string required"); |
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270 return (String)obj; |
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parents:
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271 } |
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parents:
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272 |
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parents:
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diff
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273 private String parseQuote1() throws LuanException { |
| 585 | 274 parser.begin(); |
| 275 if( !parser.matchIgnoreCase("[quote]") ) | |
| 276 return parser.failure(null); | |
| 277 String content = parseWellFormed(); | |
| 278 if( !parser.matchIgnoreCase("[/quote]") ) | |
| 279 return parser.failure(null); | |
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parents:
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280 String rtn = quote(content); |
| 585 | 281 return parser.success(rtn); |
| 282 } | |
| 283 | |
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parents:
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284 private String parseQuote2() throws LuanException { |
| 585 | 285 parser.begin(); |
| 286 if( !parser.matchIgnoreCase("[quote=") ) | |
| 287 return parser.failure(null); | |
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288 List args = new ArrayList(); |
| 585 | 289 int start = parser.currentIndex(); |
| 290 while( parser.noneOf("[];") ); | |
| 291 String name = parser.textFrom(start).trim(); | |
| 292 if( name.length() == 0 ) | |
| 293 return parser.failure(null); | |
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294 args.add(name); |
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parents:
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295 while( parser.match(';') ) { |
| 585 | 296 start = parser.currentIndex(); |
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parents:
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297 while( parser.noneOf("[];'") ); |
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parents:
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298 String src = parser.textFrom(start).trim(); |
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299 args.add(src); |
| 585 | 300 } |
| 301 if( !parser.match(']') ) | |
| 302 return parser.failure(null); | |
| 303 String content = parseWellFormed(); | |
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304 args.add(0,content); |
| 585 | 305 if( !parser.matchIgnoreCase("[/quote]") ) |
| 306 return parser.failure(null); | |
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307 String rtn = quote(args.toArray()); |
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6ea90dc10375
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parents:
588
diff
changeset
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308 return parser.success(rtn); |
| 585 | 309 } |
| 310 | |
| 311 } |