molstar
Version:
A comprehensive macromolecular library.
63 lines (62 loc) • 2.31 kB
JavaScript
;
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseCifBinary = parseCifBinary;
const tslib_1 = require("tslib");
const Data = tslib_1.__importStar(require("../data-model"));
const field_1 = require("./field");
const result_1 = require("../../result");
const decode_1 = require("../../../common/msgpack/decode");
const mol_task_1 = require("../../../../mol-task");
function checkVersions(min, current) {
for (let i = 0; i < 2; i++) {
if (min[i] > current[i])
return false;
}
return true;
}
function Category(data) {
const map = Object.create(null);
const cache = Object.create(null);
for (const col of data.columns)
map[col.name] = col;
return {
rowCount: data.rowCount,
name: data.name.substring(1),
fieldNames: data.columns.map(c => c.name),
getField(name) {
const col = map[name];
if (!col)
return void 0;
if (!!cache[name])
return cache[name];
cache[name] = (0, field_1.Field)(col);
return cache[name];
}
};
}
function parseCifBinary(data) {
return mol_task_1.Task.create('Parse BinaryCIF', async (ctx) => {
const minVersion = [0, 3];
try {
const unpacked = (0, decode_1.decodeMsgPack)(data);
if (!checkVersions(minVersion, unpacked.version.match(/(\d)\.(\d)\.\d/).slice(1).map(v => +v))) {
return result_1.ReaderResult.error(`Unsupported format version. Current ${unpacked.version}, required ${minVersion.join('.')}.`);
}
const file = Data.CifFile(unpacked.dataBlocks.map(block => {
const cats = Object.create(null);
for (const cat of block.categories)
cats[cat.name.substring(1)] = Category(cat);
return Data.CifBlock(block.categories.map(c => c.name.substring(1)), cats, block.header);
}));
return result_1.ReaderResult.success(file);
}
catch (e) {
return result_1.ReaderResult.error('' + e);
}
});
}