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import { configFromISO, configFromRFC2822 } from './from-string';
import { configFromArray } from './from-array';
import { getParseRegexForToken } from '../parse/regex';
import { addTimeToArrayFromToken } from '../parse/token';
import {
expandFormat,
formatTokenFunctions,
formattingTokens,
} from '../format/format';
import checkOverflow from './check-overflow';
import { YEAR, HOUR } from '../units/constants';
import { hooks } from '../utils/hooks';
import getParsingFlags from './parsing-flags';
// constant that refers to the ISO standard
hooks.ISO_8601 = function () {};
// constant that refers to the RFC 2822 form
hooks.RFC_2822 = function () {};
// date from string and format string
export function configFromStringAndFormat(config) {
// TODO: Move this to another part of the creation flow to prevent circular deps
if (config._f === hooks.ISO_8601) {
configFromISO(config);
return;
}
if (config._f === hooks.RFC_2822) {
configFromRFC2822(config);
return;
}
config._a = [];
getParsingFlags(config).empty = true;
// This array is used to make a Date, either with `new Date` or `Date.UTC`
var string = '' + config._i,
i,
parsedInput,
tokens,
token,
skipped,
stringLength = string.length,
totalParsedInputLength = 0,
era,
tokenLen;
tokens =
expandFormat(config._f, config._locale).match(formattingTokens) || [];
tokenLen = tokens.length;
for (i = 0; i < tokenLen; i++) {
token = tokens[i];
parsedInput = (string.match(getParseRegexForToken(token, config)) ||
[])[0];
if (parsedInput) {
skipped = string.substr(0, string.indexOf(parsedInput));
if (skipped.length > 0) {
getParsingFlags(config).unusedInput.push(skipped);
}
string = string.slice(
string.indexOf(parsedInput) + parsedInput.length
);
totalParsedInputLength += parsedInput.length;
}
// don't parse if it's not a known token
if (formatTokenFunctions[token]) {
if (parsedInput) {
getParsingFlags(config).empty = false;
} else {
getParsingFlags(config).unusedTokens.push(token);
}
addTimeToArrayFromToken(token, parsedInput, config);
} else if (config._strict && !parsedInput) {
getParsingFlags(config).unusedTokens.push(token);
}
}
// add remaining unparsed input length to the string
getParsingFlags(config).charsLeftOver =
stringLength - totalParsedInputLength;
if (string.length > 0) {
getParsingFlags(config).unusedInput.push(string);
}
// clear _12h flag if hour is <= 12
if (
config._a[HOUR] <= 12 &&
getParsingFlags(config).bigHour === true &&
config._a[HOUR] > 0
) {
getParsingFlags(config).bigHour = undefined;
}
getParsingFlags(config).parsedDateParts = config._a.slice(0);
getParsingFlags(config).meridiem = config._meridiem;
// handle meridiem
config._a[HOUR] = meridiemFixWrap(
config._locale,
config._a[HOUR],
config._meridiem
);
// handle era
era = getParsingFlags(config).era;
if (era !== null) {
config._a[YEAR] = config._locale.erasConvertYear(era, config._a[YEAR]);
}
configFromArray(config);
checkOverflow(config);
}
function meridiemFixWrap(locale, hour, meridiem) {
var isPm;
if (meridiem == null) {
// nothing to do
return hour;
}
if (locale.meridiemHour != null) {
return locale.meridiemHour(hour, meridiem);
} else if (locale.isPM != null) {
// Fallback
isPm = locale.isPM(meridiem);
if (isPm && hour < 12) {
hour += 12;
}
if (!isPm && hour === 12) {
hour = 0;
}
return hour;
} else {
// this is not supposed to happen
return hour;
}
}
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