@heinlein-video/rrule
Version:
rrule fork. Includes the src/ folder for typescript sourceMaps
188 lines • 6.09 kB
JavaScript
import { __assign } from "tslib";
import { RRule } from './rrule';
import { RRuleSet } from './rruleset';
import { untilStringToDate } from './dateutil';
import { includes, split } from './helpers';
import { parseString, parseDtstart } from './parsestring';
/**
* RRuleStr
* To parse a set of rrule strings
*/
var DEFAULT_OPTIONS = {
dtstart: null,
cache: false,
unfold: false,
forceset: false,
compatible: false,
tzid: null,
};
export function parseInput(s, options) {
var rrulevals = [];
var rdatevals = [];
var exrulevals = [];
var exdatevals = [];
var parsedDtstart = parseDtstart(s);
var dtstart = parsedDtstart.dtstart;
var tzid = parsedDtstart.tzid;
var lines = splitIntoLines(s, options.unfold);
lines.forEach(function (line) {
var _a;
if (!line)
return;
var _b = breakDownLine(line), name = _b.name, parms = _b.parms, value = _b.value;
switch (name.toUpperCase()) {
case 'RRULE':
if (parms.length) {
throw new Error("unsupported RRULE parm: ".concat(parms.join(',')));
}
rrulevals.push(parseString(line));
break;
case 'RDATE':
var _c = (_a = /RDATE(?:;TZID=([^:=]+))?/i.exec(line)) !== null && _a !== void 0 ? _a : [], rdateTzid = _c[1];
if (rdateTzid && !tzid) {
tzid = rdateTzid;
}
rdatevals = rdatevals.concat(parseRDate(value, parms));
break;
case 'EXRULE':
if (parms.length) {
throw new Error("unsupported EXRULE parm: ".concat(parms.join(',')));
}
exrulevals.push(parseString(value));
break;
case 'EXDATE':
exdatevals = exdatevals.concat(parseRDate(value, parms));
break;
case 'DTSTART':
break;
default:
throw new Error('unsupported property: ' + name);
}
});
return {
dtstart: dtstart,
tzid: tzid,
rrulevals: rrulevals,
rdatevals: rdatevals,
exrulevals: exrulevals,
exdatevals: exdatevals,
};
}
function buildRule(s, options) {
var _a = parseInput(s, options), rrulevals = _a.rrulevals, rdatevals = _a.rdatevals, exrulevals = _a.exrulevals, exdatevals = _a.exdatevals, dtstart = _a.dtstart, tzid = _a.tzid;
var noCache = options.cache === false;
if (options.compatible) {
options.forceset = true;
options.unfold = true;
}
if (options.forceset ||
rrulevals.length > 1 ||
rdatevals.length ||
exrulevals.length ||
exdatevals.length) {
var rset_1 = new RRuleSet(noCache);
rset_1.dtstart(dtstart);
rset_1.tzid(tzid || undefined);
rrulevals.forEach(function (val) {
rset_1.rrule(new RRule(groomRruleOptions(val, dtstart, tzid), noCache));
});
rdatevals.forEach(function (date) {
rset_1.rdate(date);
});
exrulevals.forEach(function (val) {
rset_1.exrule(new RRule(groomRruleOptions(val, dtstart, tzid), noCache));
});
exdatevals.forEach(function (date) {
rset_1.exdate(date);
});
if (options.compatible && options.dtstart)
rset_1.rdate(dtstart);
return rset_1;
}
var val = rrulevals[0] || {};
return new RRule(groomRruleOptions(val, val.dtstart || options.dtstart || dtstart, val.tzid || options.tzid || tzid), noCache);
}
export function rrulestr(s, options) {
if (options === void 0) { options = {}; }
return buildRule(s, initializeOptions(options));
}
function groomRruleOptions(val, dtstart, tzid) {
return __assign(__assign({}, val), { dtstart: dtstart, tzid: tzid });
}
function initializeOptions(options) {
var invalid = [];
var keys = Object.keys(options);
var defaultKeys = Object.keys(DEFAULT_OPTIONS);
keys.forEach(function (key) {
if (!includes(defaultKeys, key))
invalid.push(key);
});
if (invalid.length) {
throw new Error('Invalid options: ' + invalid.join(', '));
}
return __assign(__assign({}, DEFAULT_OPTIONS), options);
}
function extractName(line) {
if (line.indexOf(':') === -1) {
return {
name: 'RRULE',
value: line,
};
}
var _a = split(line, ':', 1), name = _a[0], value = _a[1];
return {
name: name,
value: value,
};
}
function breakDownLine(line) {
var _a = extractName(line), name = _a.name, value = _a.value;
var parms = name.split(';');
if (!parms)
throw new Error('empty property name');
return {
name: parms[0].toUpperCase(),
parms: parms.slice(1),
value: value,
};
}
function splitIntoLines(s, unfold) {
if (unfold === void 0) { unfold = false; }
s = s && s.trim();
if (!s)
throw new Error('Invalid empty string');
// More info about 'unfold' option
// Go head to http://www.ietf.org/rfc/rfc2445.txt
if (!unfold) {
return s.split(/\s/);
}
var lines = s.split('\n');
var i = 0;
while (i < lines.length) {
// TODO
var line = (lines[i] = lines[i].replace(/\s+$/g, ''));
if (!line) {
lines.splice(i, 1);
}
else if (i > 0 && line[0] === ' ') {
lines[i - 1] += line.slice(1);
lines.splice(i, 1);
}
else {
i += 1;
}
}
return lines;
}
function validateDateParm(parms) {
parms.forEach(function (parm) {
if (!/(VALUE=DATE(-TIME)?)|(TZID=)/.test(parm)) {
throw new Error('unsupported RDATE/EXDATE parm: ' + parm);
}
});
}
function parseRDate(rdateval, parms) {
validateDateParm(parms);
return rdateval.split(',').map(function (datestr) { return untilStringToDate(datestr); });
}
//# sourceMappingURL=rrulestr.js.map