| 1 | module.exports = function h (tag, attr, children) {
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| 2 | if (Array.isArray(attr)) {
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| 3 | children = attr
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| 4 | attr = {}
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| 5 | }
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| 6 | if (!children) children = []
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| 7 | if (!Array.isArray(children)) children = [children]
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| 8 | if (!attr) attr = {}
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| 9 |
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| 10 | var open = '<' + tag.replace(/[\/!]$/, '')
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| 11 | var kattr = Object.keys(attr)
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| 12 | if (kattr.length) {
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| 13 | open += ' ' + kattr.map(function (k) {
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| 14 | return enc(k) + '="' + enc(attr[k]) + '"'
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| 15 | }).join(' ')
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| 16 | }
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| 17 | if (/^\?/.test(tag)) {
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| 18 | return open + '?>' + children.join('')
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| 19 | } else if (/!$/.test(tag)) {
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| 20 | return open + '>' + children.join('')
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| 21 | } else if (!children.length) {
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| 22 | return open + '/>'
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| 23 | } else {
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| 24 | return open + '>' + children.join('') + '</' + tag + '>'
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| 25 | }
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| 26 | }
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| 27 |
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| 28 | function enc (str) {
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| 29 | if (typeof str !== 'string') str = String(str)
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| 30 | return str
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| 31 | .replace(/&/g, '&')
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| 32 | .replace(/</g, '<')
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| 33 | .replace(/>/g, '>')
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| 34 | .replace(/"/g, '"')
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| 35 | }
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