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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| (function (Prism) { | ||
|
|
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| var erb_pattern = /<%=?[\s\S]+?%>/g; | ||
|
|
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| Prism.languages.erb = Prism.languages.extend('markup', { | ||
| 'erb': { | ||
| pattern: erb_pattern, | ||
| inside: { | ||
| 'delimiter': { | ||
| pattern: /^<%=?|%>$/, | ||
| alias: 'punctuation' | ||
| }, | ||
| rest: Prism.languages.ruby | ||
| } | ||
| } | ||
| }); | ||
|
|
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| // Tokenize all inline ERB expressions that are wrapped in <%= %> | ||
| // This allows for easy ERB + markup highlighting | ||
| Prism.hooks.add('before-highlight', function(env) { | ||
| if (env.language !== 'erb') { | ||
| return; | ||
| } | ||
|
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| env.tokenStack = []; | ||
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| env.backupCode = env.code; | ||
| env.code = env.code.replace(erb_pattern, function(match) { | ||
| var i = env.tokenStack.length; | ||
| // Check for existing strings | ||
| while (env.backupCode.indexOf('___ERB' + i + '___') !== -1) | ||
| ++i; | ||
|
|
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| // Create a sparse array | ||
| env.tokenStack[i] = match; | ||
|
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| return '___ERB' + i + '___'; | ||
| }); | ||
| }); | ||
|
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| // Restore env.code for other plugins (e.g. line-numbers) | ||
| Prism.hooks.add('before-insert', function(env) { | ||
| if (env.language === 'erb') { | ||
| env.code = env.backupCode; | ||
| delete env.backupCode; | ||
| } | ||
| }); | ||
|
|
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| // Re-insert the tokens after highlighting | ||
| // and highlight them with defined grammar | ||
| Prism.hooks.add('after-highlight', function(env) { | ||
| if (env.language !== 'erb') { | ||
| return; | ||
| } | ||
|
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| for (var i = 0, keys = Object.keys(env.tokenStack); i < keys.length; ++i) { | ||
| var k = keys[i]; | ||
| var t = env.tokenStack[k]; | ||
|
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| // The replace prevents $$, $&, $`, $', $n, $nn from being interpreted as special patterns | ||
| env.highlightedCode = env.highlightedCode.replace('___ERB' + k + '___', Prism.highlight(t, env.grammar, 'erb').replace(/\$/g, '$$$$')); | ||
| } | ||
|
|
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| env.element.innerHTML = env.highlightedCode; | ||
| }); | ||
|
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| }(Prism)); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| <h2>Full example</h2> | ||
| <pre><code><%# index.erb %> | ||
| <h1>Listing Books</h1> | ||
| <table> | ||
| <tr> | ||
| <th>Title</th> | ||
| <th>Summary</th> | ||
| <th></th> | ||
| <th></th> | ||
| <th></th> | ||
| </tr> | ||
|
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| <% @books.each do |book| %> | ||
| <tr> | ||
| <td><%= book.title %></td> | ||
| <td><%= book.content %></td> | ||
| <td><%= link_to "Show", book %></td> | ||
| <td><%= link_to "Edit", edit_book_path(book) %></td> | ||
| <td><%= link_to "Remove", book, method: :delete, data: { confirm: "Are you sure?" } %></td> | ||
| </tr> | ||
| <% end %> | ||
| </table></code></pre> |
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