(block, tabReplace, useBR)
| 419 | /* Public library functions */ |
| 420 | |
| 421 | function highlightBlock(block, tabReplace, useBR) { |
| 422 | initialize(); |
| 423 | |
| 424 | var text = blockText(block, useBR); |
| 425 | var language = blockLanguage(block); |
| 426 | if (language == 'no-highlight') |
| 427 | return; |
| 428 | if (language) { |
| 429 | var result = highlight(language, text); |
| 430 | } else { |
| 431 | var result = {language: '', keyword_count: 0, relevance: 0, value: escape(text)}; |
| 432 | var second_best = result; |
| 433 | for (var key in languages) { |
| 434 | if (!languages.hasOwnProperty(key)) |
| 435 | continue; |
| 436 | var current = highlight(key, text); |
| 437 | if (current.keyword_count + current.relevance > second_best.keyword_count + second_best.relevance) { |
| 438 | second_best = current; |
| 439 | } |
| 440 | if (current.keyword_count + current.relevance > result.keyword_count + result.relevance) { |
| 441 | second_best = result; |
| 442 | result = current; |
| 443 | } |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | var class_name = block.className; |
| 448 | if (!class_name.match(result.language)) { |
| 449 | class_name = class_name ? (class_name + ' ' + result.language) : result.language; |
| 450 | } |
| 451 | var original = nodeStream(block); |
| 452 | if (original.length) { |
| 453 | var pre = document.createElement('pre'); |
| 454 | pre.innerHTML = result.value; |
| 455 | result.value = mergeStreams(original, nodeStream(pre), text); |
| 456 | } |
| 457 | if (tabReplace) { |
| 458 | result.value = result.value.replace(/^((<[^>]+>|\t)+)/gm, function(match, p1, offset, s) { |
| 459 | return p1.replace(/\t/g, tabReplace); |
| 460 | }) |
| 461 | } |
| 462 | if (useBR) { |
| 463 | result.value = result.value.replace(/\n/g, '<br>'); |
| 464 | } |
| 465 | if (/MSIE [678]/.test(navigator.userAgent) && block.tagName == 'CODE' && block.parentNode.tagName == 'PRE') { |
| 466 | // This is for backwards compatibility only. IE needs this strange |
| 467 | // hack becasue it cannot just cleanly replace <code> block contents. |
| 468 | var pre = block.parentNode; |
| 469 | var container = document.createElement('div'); |
| 470 | container.innerHTML = '<pre><code>' + result.value + '</code></pre>'; |
| 471 | block = container.firstChild.firstChild; |
| 472 | container.firstChild.className = pre.className; |
| 473 | pre.parentNode.replaceChild(container.firstChild, pre); |
| 474 | } else { |
| 475 | block.innerHTML = result.value; |
| 476 | } |
| 477 | block.className = class_name; |
| 478 | block.dataset = {}; |
no test coverage detected