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25 lines
992 B
25 lines
992 B
// Regexps to match html elements
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const attr_name = '[a-zA-Z_:][a-zA-Z0-9:._-]*'
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const unquoted = '[^"\'=<>`\\x00-\\x20]+'
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const single_quoted = "'[^']*'"
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const double_quoted = '"[^"]*"'
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const attr_value = '(?:' + unquoted + '|' + single_quoted + '|' + double_quoted + ')'
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const attribute = '(?:\\s+' + attr_name + '(?:\\s*=\\s*' + attr_value + ')?)'
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const open_tag = '<[A-Za-z][A-Za-z0-9\\-]*' + attribute + '*\\s*\\/?>'
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const close_tag = '<\\/[A-Za-z][A-Za-z0-9\\-]*\\s*>'
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const comment = '<!---?>|<!--(?:[^-]|-[^-]|--[^>])*-->'
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const processing = '<[?][\\s\\S]*?[?]>'
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const declaration = '<![A-Za-z][^>]*>'
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const cdata = '<!\\[CDATA\\[[\\s\\S]*?\\]\\]>'
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const HTML_TAG_RE = new RegExp('^(?:' + open_tag + '|' + close_tag + '|' + comment +
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'|' + processing + '|' + declaration + '|' + cdata + ')')
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const HTML_OPEN_CLOSE_TAG_RE = new RegExp('^(?:' + open_tag + '|' + close_tag + ')')
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export { HTML_TAG_RE, HTML_OPEN_CLOSE_TAG_RE }
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