--- /dev/null
+'use strict';
+
+var TIME = /^(\d\d):(\d\d):(\d\d)(\.\d+)?(z|[+-]\d\d:\d\d)?$/i;
+var DATE_TIME_SEPARATOR = /t|\s/i;
+
+var COMPARE_FORMATS = {
+ date: compareDate,
+ time: compareTime,
+ 'date-time': compareDateTime
+};
+
+var $dataMetaSchema = {
+ type: 'object',
+ required: [ '$data' ],
+ properties: {
+ $data: {
+ type: 'string',
+ anyOf: [
+ { format: 'relative-json-pointer' },
+ { format: 'json-pointer' }
+ ]
+ }
+ },
+ additionalProperties: false
+};
+
+module.exports = function (minMax) {
+ var keyword = 'format' + minMax;
+ return function defFunc(ajv) {
+ defFunc.definition = {
+ type: 'string',
+ inline: require('./dotjs/_formatLimit'),
+ statements: true,
+ errors: 'full',
+ dependencies: ['format'],
+ metaSchema: {
+ anyOf: [
+ {type: 'string'},
+ $dataMetaSchema
+ ]
+ }
+ };
+
+ ajv.addKeyword(keyword, defFunc.definition);
+ ajv.addKeyword('formatExclusive' + minMax, {
+ dependencies: ['format' + minMax],
+ metaSchema: {
+ anyOf: [
+ {type: 'boolean'},
+ $dataMetaSchema
+ ]
+ }
+ });
+ extendFormats(ajv);
+ return ajv;
+ };
+};
+
+
+function extendFormats(ajv) {
+ var formats = ajv._formats;
+ for (var name in COMPARE_FORMATS) {
+ var format = formats[name];
+ // the last condition is needed if it's RegExp from another window
+ if (typeof format != 'object' || format instanceof RegExp || !format.validate)
+ format = formats[name] = { validate: format };
+ if (!format.compare)
+ format.compare = COMPARE_FORMATS[name];
+ }
+}
+
+
+function compareDate(d1, d2) {
+ if (!(d1 && d2)) return;
+ if (d1 > d2) return 1;
+ if (d1 < d2) return -1;
+ if (d1 === d2) return 0;
+}
+
+
+function compareTime(t1, t2) {
+ if (!(t1 && t2)) return;
+ t1 = t1.match(TIME);
+ t2 = t2.match(TIME);
+ if (!(t1 && t2)) return;
+ t1 = t1[1] + t1[2] + t1[3] + (t1[4]||'');
+ t2 = t2[1] + t2[2] + t2[3] + (t2[4]||'');
+ if (t1 > t2) return 1;
+ if (t1 < t2) return -1;
+ if (t1 === t2) return 0;
+}
+
+
+function compareDateTime(dt1, dt2) {
+ if (!(dt1 && dt2)) return;
+ dt1 = dt1.split(DATE_TIME_SEPARATOR);
+ dt2 = dt2.split(DATE_TIME_SEPARATOR);
+ var res = compareDate(dt1[0], dt2[0]);
+ if (res === undefined) return;
+ return res || compareTime(dt1[1], dt2[1]);
+}