Function _fnFilter

external/.datatables.js:4138–4167

* Filter the data table based on user input and draw the table

(searchRows, settings, input, options, column)

	 * Filter the data table based on user input and draw the table
	 */
	function _fnFilter(searchRows, settings, input, options, column) {
		if (input === "") {
			return
		}

		var i = 0
		var matched = []

		// Search term can be a function, regex or string - if a string we apply our
		// smart filtering regex (assuming the options require that)
		var searchFunc = typeof input === "function" ? input : null
		var rpSearch = input instanceof RegExp ? input : searchFunc ? null : _fnFilterCreateSearch(input, options)

		// Then for each row, does the test pass. If not, lop the row from the array
		for (i = 0; i < searchRows.length; i++) {
			var row = settings.aoData[searchRows[i]]
			var data = column === undefined ? row._sFilterRow : row._aFilterData[column]

			if ((searchFunc && searchFunc(data, row._aData, searchRows[i], column)) || (rpSearch && rpSearch.test(data))) {
				matched.push(searchRows[i])
			}
		}

		// Mutate the searchRows array
		searchRows.length = matched.length

		for (i = 0; i < matched.length; i++) {
			searchRows[i] = matched[i]
		}
	}

	/**
	 * Build a regular expression object suitable for searching a table