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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 : timestamp.js

'use strict';

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

var YAML_DATE_REGEXP = new RegExp(
  '^([0-9][0-9][0-9][0-9])'          + // [1] year
  '-([0-9][0-9])'                    + // [2] month
  '-([0-9][0-9])$');                   // [3] day

var YAML_TIMESTAMP_REGEXP = new RegExp(
  '^([0-9][0-9][0-9][0-9])'          + // [1] year
  '-([0-9][0-9]?)'                   + // [2] month
  '-([0-9][0-9]?)'                   + // [3] day
  '(?:[Tt]|[ \\t]+)'                 + // ...
  '([0-9][0-9]?)'                    + // [4] hour
  ':([0-9][0-9])'                    + // [5] minute
  ':([0-9][0-9])'                    + // [6] second
  '(?:\\.([0-9]*))?'                 + // [7] fraction
  '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
  '(?::([0-9][0-9]))?))?$');           // [11] tz_minute

function resolveYamlTimestamp(data) {
  if (data === null) return false;
  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
  return false;
}

function constructYamlTimestamp(data) {
  var match, year, month, day, hour, minute, second, fraction = 0,
      delta = null, tz_hour, tz_minute, date;

match = YAML_DATE_REGEXP.exec(data);
  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);

if (match === null) throw new Error('Date resolve error');

// match: [1] year [2] month [3] day

year = +(match[1]);
  month = +(match[2]) - 1; // JS month starts with 0
  day = +(match[3]);

if (!match[4]) { // no hour
    return new Date(Date.UTC(year, month, day));
  }

// match: [4] hour [5] minute [6] second [7] fraction

hour = +(match[4]);
  minute = +(match[5]);
  second = +(match[6]);

if (match[7]) {
    fraction = match[7].slice(0, 3);
    while (fraction.length < 3) { // milli-seconds
      fraction += '0';
    }
    fraction = +fraction;
  }

// match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute

if (match[9]) {
    tz_hour = +(match[10]);
    tz_minute = +(match[11] || 0);
    delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
    if (match[9] === '-') delta = -delta;
  }

date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));

if (delta) date.setTime(date.getTime() - delta);

return date;
}

function representYamlTimestamp(object /*, style*/) {
  return object.toISOString();
}

module.exports = new Type('tag:yaml.org,2002:timestamp', {
  kind: 'scalar',
  resolve: resolveYamlTimestamp,
  construct: constructYamlTimestamp,
  instanceOf: Date,
  represent: representYamlTimestamp
});

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 : timestamp.js

Urban Research Lab