92 lines
2.8 KiB
Plaintext
92 lines
2.8 KiB
Plaintext
'use strict';
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var NodeBuffer = require('buffer').Buffer;
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var type_1 = require("../type");
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var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
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function resolveYamlBinary(data) {
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if (null === data) {
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return false;
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}
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var code, idx, bitlen = 0, len = 0, max = data.length, map = BASE64_MAP;
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for (idx = 0; idx < max; idx++) {
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code = map.indexOf(data.charAt(idx));
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if (code > 64) {
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continue;
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}
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if (code < 0) {
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return false;
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}
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bitlen += 6;
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}
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return (bitlen % 8) === 0;
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}
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function constructYamlBinary(data) {
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var code, idx, tailbits, input = data.replace(/[\r\n=]/g, ''), max = input.length, map = BASE64_MAP, bits = 0, result = [];
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for (idx = 0; idx < max; idx++) {
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if ((idx % 4 === 0) && idx) {
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result.push((bits >> 16) & 0xFF);
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result.push((bits >> 8) & 0xFF);
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result.push(bits & 0xFF);
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}
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bits = (bits << 6) | map.indexOf(input.charAt(idx));
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}
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tailbits = (max % 4) * 6;
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if (tailbits === 0) {
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result.push((bits >> 16) & 0xFF);
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result.push((bits >> 8) & 0xFF);
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result.push(bits & 0xFF);
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}
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else if (tailbits === 18) {
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result.push((bits >> 10) & 0xFF);
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result.push((bits >> 2) & 0xFF);
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}
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else if (tailbits === 12) {
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result.push((bits >> 4) & 0xFF);
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}
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if (NodeBuffer) {
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return new NodeBuffer(result);
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}
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return result;
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}
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function representYamlBinary(object) {
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var result = '', bits = 0, idx, tail, max = object.length, map = BASE64_MAP;
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for (idx = 0; idx < max; idx++) {
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if ((idx % 3 === 0) && idx) {
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result += map[(bits >> 18) & 0x3F];
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result += map[(bits >> 12) & 0x3F];
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result += map[(bits >> 6) & 0x3F];
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result += map[bits & 0x3F];
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}
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bits = (bits << 8) + object[idx];
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}
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tail = max % 3;
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if (tail === 0) {
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result += map[(bits >> 18) & 0x3F];
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result += map[(bits >> 12) & 0x3F];
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result += map[(bits >> 6) & 0x3F];
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result += map[bits & 0x3F];
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}
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else if (tail === 2) {
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result += map[(bits >> 10) & 0x3F];
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result += map[(bits >> 4) & 0x3F];
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result += map[(bits << 2) & 0x3F];
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result += map[64];
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}
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else if (tail === 1) {
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result += map[(bits >> 2) & 0x3F];
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result += map[(bits << 4) & 0x3F];
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result += map[64];
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result += map[64];
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}
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return result;
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}
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function isBinary(object) {
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return NodeBuffer && NodeBuffer.isBuffer(object);
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}
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module.exports = new type_1.Type('tag:yaml.org,2002:binary', {
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kind: 'scalar',
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resolve: resolveYamlBinary,
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construct: constructYamlBinary,
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predicate: isBinary,
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represent: representYamlBinary
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});
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//# sourceMappingURL=binary.js.map |