/ usr / share / nodejs / js-yaml / lib / type / [ HOME SHELL ]

Name	Size	Permission
binary.js	2.84 KB	-rw-r--r--
bool.js	971 B	-rw-r--r--
float.js	2.41 KB	-rw-r--r--
int.js	3.6 KB	-rw-r--r--
map.js	190 B	-rw-r--r--
merge.js	230 B	-rw-r--r--
null.js	808 B	-rw-r--r--
omap.js	1023 B	-rw-r--r--
pairs.js	1.06 KB	-rw-r--r--
seq.js	191 B	-rw-r--r--
set.js	547 B	-rw-r--r--
str.js	189 B	-rw-r--r--
timestamp.js	2.51 KB	-rw-r--r--

Code Editor : binary.js

'use strict';

/*eslint-disable no-bitwise*/

var Type = require('../type');

// [ 64, 65, 66 ] -> [ padding, CR, LF ]
var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';

function resolveYamlBinary(data) {
  if (data === null) return false;

var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;

// Convert one by one.
  for (idx = 0; idx < max; idx++) {
    code = map.indexOf(data.charAt(idx));

// Skip CR/LF
    if (code > 64) continue;

// Fail on illegal characters
    if (code < 0) return false;

bitlen += 6;
  }

// If there are any bits left, source was corrupted
  return (bitlen % 8) === 0;
}

function constructYamlBinary(data) {
  var idx, tailbits,
      input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
      max = input.length,
      map = BASE64_MAP,
      bits = 0,
      result = [];

// Collect by 6*4 bits (3 bytes)

for (idx = 0; idx < max; idx++) {
    if ((idx % 4 === 0) && idx) {
      result.push((bits >> 16) & 0xFF);
      result.push((bits >> 8) & 0xFF);
      result.push(bits & 0xFF);
    }

bits = (bits << 6) | map.indexOf(input.charAt(idx));
  }

// Dump tail

tailbits = (max % 4) * 6;

if (tailbits === 0) {
    result.push((bits >> 16) & 0xFF);
    result.push((bits >> 8) & 0xFF);
    result.push(bits & 0xFF);
  } else if (tailbits === 18) {
    result.push((bits >> 10) & 0xFF);
    result.push((bits >> 2) & 0xFF);
  } else if (tailbits === 12) {
    result.push((bits >> 4) & 0xFF);
  }

return new Uint8Array(result);
}

function representYamlBinary(object /*, style*/) {
  var result = '', bits = 0, idx, tail,
      max = object.length,
      map = BASE64_MAP;

// Convert every three bytes to 4 ASCII characters.

for (idx = 0; idx < max; idx++) {
    if ((idx % 3 === 0) && idx) {
      result += map[(bits >> 18) & 0x3F];
      result += map[(bits >> 12) & 0x3F];
      result += map[(bits >> 6) & 0x3F];
      result += map[bits & 0x3F];
    }

bits = (bits << 8) + object[idx];
  }

// Dump tail

tail = max % 3;

if (tail === 0) {
    result += map[(bits >> 18) & 0x3F];
    result += map[(bits >> 12) & 0x3F];
    result += map[(bits >> 6) & 0x3F];
    result += map[bits & 0x3F];
  } else if (tail === 2) {
    result += map[(bits >> 10) & 0x3F];
    result += map[(bits >> 4) & 0x3F];
    result += map[(bits << 2) & 0x3F];
    result += map[64];
  } else if (tail === 1) {
    result += map[(bits >> 2) & 0x3F];
    result += map[(bits << 4) & 0x3F];
    result += map[64];
    result += map[64];
  }

return result;
}

function isBinary(obj) {
  return Object.prototype.toString.call(obj) ===  '[object Uint8Array]';
}

module.exports = new Type('tag:yaml.org,2002:binary', {
  kind: 'scalar',
  resolve: resolveYamlBinary,
  construct: constructYamlBinary,
  predicate: isBinary,
  represent: representYamlBinary
});

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.

${this.title}

Code Editor : binary.js

Urban Research Lab