@asadi/angular-date-components
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`Angular Date Components` is a comprehensive angular library of date-related components designed to meet the needs of applications that require localization based on various calendar systems. While the package currently includes two powerful components (S
136 lines • 16.7 kB
JavaScript
/**
* A utility class for handling and parsing date and time strings.
* Provides methods to extract date parts, time parts, hours, and minutes from formatted date strings.
* This class is designed to work with ISO 8601-like datetime formats.
*/
export class ADCDateTimeTools {
constructor() {
/**
* Allowed date splitters for parsing date strings.
*/
this.dateSplitters = ['-', '/'];
}
/**
* Constructs a dynamic regex pattern for date splitters.
*
* @returns A string pattern containing allowed splitters.
*/
getDateSplitterPattern() {
// Escape special characters for regex and join them into a character class.
return `[${this.dateSplitters.map(char => `\\${char}`).join('')}]`;
}
/**
* Extracts the date portion (YYYY-MM-DD or YYYY/MM/DD) from a datetime string.
*
* @param source - A datetime string in the format `yyyy-MM-ddThh:mm:ss` or `yyyy-MM-dd`.
* @returns The extracted date in the format `yyyy-MM-dd` or `yyyy/MM/dd`.
* @throws If the source string is not a valid date string.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.dateOnly('2024-11-12T15:30:00')); // Output: '2024-11-12'
*/
dateOnly(source) {
const splitterPattern = this.getDateSplitterPattern();
const regex = new RegExp(`^\\d{4}${splitterPattern}(0[1-9]|1[0-2])${splitterPattern}(0[1-9]|[12]\\d|3[01])`);
if (!regex.test(source)) {
throw new Error(`Invalid date string format: ${source}. Expected formats: yyyy-MM-dd or yyyy/MM/dd`);
}
return source.split('T')[0];
}
/**
* Extracts the time portion (hh:mm:ss) from a datetime string.
*
* @param source - A datetime string in the format `yyyy-MM-ddThh:mm:ss` or `yyyy-MM-ddThh:mm`.
* @returns The extracted time in the format `hh:mm:ss` or `hh:mm`.
* @throws If the source string is not a valid datetime string.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.timeOnly('2024-11-12T15:30:00')); // Output: '15:30:00'
*/
timeOnly(source) {
const regex = /.*T(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
if (!regex.test(source)) {
throw new Error(`Invalid datetime string format: ${source}. Expected format: *Thh:mm:ss or *Thh:mm`);
}
return source.split('T')[1];
}
/**
* Extracts the hour from a time string.
*
* @param source - A time string in the format `hh:mm:ss` or `hh:mm`.
* @returns The hour as a string.
* @throws If the source string is not a valid time string.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.hour('15:45')); // Output: '15'
*/
hour(source) {
const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
if (!regex.test(source)) {
throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);
}
return source.split(':')[0];
}
/**
* Extracts the hour from a time string or returns a default value if the source is null or undefined.
*
* @param source - A time string in the format `hh:mm:ss` or `hh:mm`, or `null`/`undefined`.
* @param defaultHour - The default hour to return if the source is null or invalid.
* @returns The hour as a string or the default value.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.hourOrDefault(null, '08')); // Output: '08'
*/
hourOrDefault(source, defaultHour) {
if (source == null)
return defaultHour;
const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
if (!regex.test(source)) {
throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);
}
return source.split(':')[0];
}
/**
* Extracts the minutes from a time string.
*
* @param source - A time string in the format `hh:mm:ss` or `hh:mm`.
* @returns The minutes as a string.
* @throws If the source string is not a valid time string.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.minutes('15:45')); // Output: '45'
*/
minutes(source) {
const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
if (!regex.test(source)) {
throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);
}
return source.split(':')[1];
}
/**
* Extracts the minutes from a time string or returns a default value if the source is null or undefined.
*
* @param source - A time string in the format `hh:mm:ss` or `hh:mm`, or `null`/`undefined`.
* @param defaultMinute - The default minute to return if the source is null or invalid.
* @returns The minutes as a string or the default value.
*
* @example
* const tools = new ADCDateTimeTools();
* console.log(tools.minutesOrDefault(null, '30')); // Output: '30'
*/
minutesOrDefault(source, defaultMinute) {
if (source == null)
return defaultMinute;
const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
if (!regex.test(source)) {
throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);
}
return source.split(':')[1];
}
}
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Expected formats: yyyy-MM-dd or yyyy/MM/dd`);\r\n      }\r\n  \r\n      return source.split('T')[0];\r\n    }\r\n  \r\n    /**\r\n     * Extracts the time portion (hh:mm:ss) from a datetime string.\r\n     * \r\n     * @param source - A datetime string in the format `yyyy-MM-ddThh:mm:ss` or `yyyy-MM-ddThh:mm`.\r\n     * @returns The extracted time in the format `hh:mm:ss` or `hh:mm`.\r\n     * @throws If the source string is not a valid datetime string.\r\n     * \r\n     * @example\r\n     * const tools = new ADCDateTimeTools();\r\n     * console.log(tools.timeOnly('2024-11-12T15:30:00')); // Output: '15:30:00'\r\n     */\r\n    timeOnly(source: string): string {\r\n      const regex = /.*T(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;\r\n  \r\n      if (!regex.test(source)) {\r\n        throw new Error(`Invalid datetime string format: ${source}. Expected format: *Thh:mm:ss or *Thh:mm`);\r\n      }\r\n  \r\n      return source.split('T')[1];\r\n    }\r\n  \r\n    /**\r\n     * Extracts the hour from a time string.\r\n     * \r\n     * @param source - A time string in the format `hh:mm:ss` or `hh:mm`.\r\n     * @returns The hour as a string.\r\n     * @throws If the source string is not a valid time string.\r\n     * \r\n     * @example\r\n     * const tools = new ADCDateTimeTools();\r\n     * console.log(tools.hour('15:45')); // Output: '15'\r\n     */\r\n    hour(source: string): string {\r\n      const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;\r\n  \r\n      if (!regex.test(source)) {\r\n        throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);\r\n      }\r\n  \r\n      return source.split(':')[0];\r\n    }\r\n  \r\n    /**\r\n     * Extracts the hour from a time string or returns a default value if the source is null or undefined.\r\n     * \r\n     * @param source - A time string in the format `hh:mm:ss` or `hh:mm`, or `null`/`undefined`.\r\n     * @param defaultHour - The default hour to return if the source is null or invalid.\r\n     * @returns The hour as a string or the default value.\r\n     * \r\n     * @example\r\n     * const tools = new ADCDateTimeTools();\r\n     * console.log(tools.hourOrDefault(null, '08')); // Output: '08'\r\n     */\r\n    hourOrDefault(source: string | null | undefined, defaultHour: string): string {\r\n      if (source == null) return defaultHour;\r\n  \r\n      const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;\r\n  \r\n      if (!regex.test(source)) {\r\n        throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);\r\n      }\r\n  \r\n      return source.split(':')[0];\r\n    }\r\n  \r\n    /**\r\n     * Extracts the minutes from a time string.\r\n     * \r\n     * @param source - A time string in the format `hh:mm:ss` or `hh:mm`.\r\n     * @returns The minutes as a string.\r\n     * @throws If the source string is not a valid time string.\r\n     * \r\n     * @example\r\n     * const tools = new ADCDateTimeTools();\r\n     * console.log(tools.minutes('15:45')); // Output: '45'\r\n     */\r\n    minutes(source: string): string {\r\n      const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;\r\n  \r\n      if (!regex.test(source)) {\r\n        throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);\r\n      }\r\n  \r\n      return source.split(':')[1];\r\n    }\r\n\r\n    /**\r\n * Extracts the minutes from a time string or returns a default value if the source is null or undefined.\r\n * \r\n * @param source - A time string in the format `hh:mm:ss` or `hh:mm`, or `null`/`undefined`.\r\n * @param defaultMinute - The default minute to return if the source is null or invalid.\r\n * @returns The minutes as a string or the default value.\r\n * \r\n * @example\r\n * const tools = new ADCDateTimeTools();\r\n * console.log(tools.minutesOrDefault(null, '30')); // Output: '30'\r\n */\r\nminutesOrDefault(source: string | null | undefined, defaultMinute: string): string {\r\n    if (source == null) return defaultMinute;\r\n\r\n    const regex = /^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;\r\n\r\n    if (!regex.test(source)) {\r\n        throw new Error(`Invalid time string format: ${source}. Expected format: hh:mm:ss or hh:mm`);\r\n    }\r\n\r\n    return source.split(':')[1];\r\n}\r\n  }"]}