prism-smarty.js
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/* TODO
Add support for variables inside double quoted strings
Add support for {php}
*/
(function(Prism) {
var smarty_pattern = /\{\*[\w\W]+?\*\}|\{[\w\W]+?\}/g;
var smarty_litteral_start = '{literal}';
var smarty_litteral_end = '{/literal}';
var smarty_litteral_mode = false;
Prism.languages.smarty = Prism.languages.extend('markup', {
'smarty': {
pattern: smarty_pattern,
inside: {
'delimiter': {
pattern: /^\{|\}$/i,
alias: 'punctuation'
},
'string': /(["'])(?:\\?.)*?\1/,
'number': /\b-?(?:0x[\dA-Fa-f]+|\d*\.?\d+(?:[Ee][-+]?\d+)?)\b/,
'variable': [
/\$(?!\d)\w+/,
/#(?!\d)\w+#/,
{
pattern: /(\.|->)(?!\d)\w+/,
lookbehind: true
},
{
pattern: /(\[)(?!\d)\w+(?=\])/,
lookbehind: true
}
],
'function': [
{
pattern: /(\|\s*)@?(?!\d)\w+/,
lookbehind: true
},
/^\/?(?!\d)\w+/,
/(?!\d)\w+(?=\()/
],
'attr-name': {
// Value is made optional because it may have already been tokenized
pattern: /\w+\s*=\s*(?:(?!\d)\w+)?/,
inside: {
"variable": {
pattern: /(=\s*)(?!\d)\w+/,
lookbehind: true
},
"operator": /=/
}
},
'punctuation': [
/[\[\]().,:`]|\->/
],
'operator': [
/[+\-*\/%]|==?=?|[!<>]=?|&&|\|\|?/,
/\bis\s+(?:not\s+)?(?:div|even|odd)(?:\s+by)?\b/,
/\b(?:eq|neq?|gt|lt|gt?e|lt?e|not|mod|or|and)\b/
],
'keyword': /\b(?:false|off|on|no|true|yes)\b/
}
}
});
// Comments are inserted at top so that they can
// surround markup
Prism.languages.insertBefore('smarty', 'tag', {
'smarty-comment': {
pattern: /\{\*[\w\W]*?\*\}/,
alias: ['smarty','comment']
}
});
// Tokenize all inline Smarty expressions
Prism.hooks.add('before-highlight', function(env) {
if (env.language !== 'smarty') {
return;
}
env.tokenStack = [];
env.backupCode = env.code;
env.code = env.code.replace(smarty_pattern, function(match) {
// Smarty tags inside {literal} block are ignored
if(match === smarty_litteral_end) {
smarty_litteral_mode = false;
}
if(!smarty_litteral_mode) {
if(match === smarty_litteral_start) {
smarty_litteral_mode = true;
}
env.tokenStack.push(match);
return '___SMARTY' + env.tokenStack.length + '___';
}
return match;
});
});
// Restore env.code for other plugins (e.g. line-numbers)
Prism.hooks.add('before-insert', function(env) {
if (env.language === 'smarty') {
env.code = env.backupCode;
delete env.backupCode;
}
});
// Re-insert the tokens after highlighting
// and highlight them with defined grammar
Prism.hooks.add('after-highlight', function(env) {
if (env.language !== 'smarty') {
return;
}
for (var i = 0, t; t = env.tokenStack[i]; i++) {
// The replace prevents $$, $&, $`, $', $n, $nn from being interpreted as special patterns
env.highlightedCode = env.highlightedCode.replace('___SMARTY' + (i + 1) + '___', Prism.highlight(t, env.grammar, 'smarty').replace(/\$/g, '$$$$'));
}
env.element.innerHTML = env.highlightedCode;
});
}(Prism));