molstar
Version:
A comprehensive macromolecular library.
47 lines (46 loc) • 1.82 kB
JavaScript
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
import { ColumnHelpers } from '../../../../../mol-data/db';
import { trimStr } from '../tokenizer';
import { parseIntSkipLeadingWhitespace, parseFloatSkipLeadingWhitespace } from '../number-parser';
export function FixedColumnProvider(lines) {
return function (offset, width, type) {
return FixedColumn(lines, offset, width, type);
};
}
export function FixedColumn(lines, offset, width, schema) {
var data = lines.data, indices = lines.indices, rowCount = lines.count;
var type = schema.valueType;
var value = type === 'str' ? function (row) {
var s = indices[2 * row] + offset, le = indices[2 * row + 1];
if (s >= le)
return '';
var e = s + width;
if (e > le)
e = le;
return trimStr(data, s, e);
} : type === 'int' ? function (row) {
var s = indices[2 * row] + offset;
if (s > indices[2 * row + 1])
return 0;
return parseIntSkipLeadingWhitespace(data, s, s + width);
} : function (row) {
var s = indices[2 * row] + offset;
if (s > indices[2 * row + 1])
return 0;
return parseFloatSkipLeadingWhitespace(data, s, s + width);
};
return {
schema: schema,
__array: void 0,
isDefined: true,
rowCount: rowCount,
value: value,
valueKind: function (row) { return 0 /* Column.ValueKind.Present */; },
toArray: function (params) { return ColumnHelpers.createAndFillArray(rowCount, value, params); },
areValuesEqual: function (rowA, rowB) { return value(rowA) === value(rowB); }
};
}