public/javascripts/dateparse.js in merb-admin-0.8.5 vs public/javascripts/dateparse.js in merb-admin-0.8.6

- old
+ new

@@ -1,233 +1,233 @@ -/* 'Magic' date parsing, by Simon Willison (6th October 2003) - http://simon.incutio.com/archive/2003/10/06/betterDateInput - Adapted for 6newslawrence.com, 28th January 2004 -*/ - -/* Finds the index of the first occurence of item in the array, or -1 if not found */ -if (typeof Array.prototype.indexOf == 'undefined') { - Array.prototype.indexOf = function(item) { - var len = this.length; - for (var i = 0; i < len; i++) { - if (this[i] == item) { - return i; - } - } - return -1; - }; -} -/* Returns an array of items judged 'true' by the passed in test function */ -if (typeof Array.prototype.filter == 'undefined') { - Array.prototype.filter = function(test) { - var matches = []; - var len = this.length; - for (var i = 0; i < len; i++) { - if (test(this[i])) { - matches[matches.length] = this[i]; - } - } - return matches; - }; -} - -var monthNames = gettext("January February March April May June July August September October November December").split(" "); -var weekdayNames = gettext("Sunday Monday Tuesday Wednesday Thursday Friday Saturday").split(" "); - -/* Takes a string, returns the index of the month matching that string, throws - an error if 0 or more than 1 matches -*/ -function parseMonth(month) { - var matches = monthNames.filter(function(item) { - return new RegExp("^" + month, "i").test(item); - }); - if (matches.length == 0) { - throw new Error("Invalid month string"); - } - if (matches.length > 1) { - throw new Error("Ambiguous month"); - } - return monthNames.indexOf(matches[0]); -} -/* Same as parseMonth but for days of the week */ -function parseWeekday(weekday) { - var matches = weekdayNames.filter(function(item) { - return new RegExp("^" + weekday, "i").test(item); - }); - if (matches.length == 0) { - throw new Error("Invalid day string"); - } - if (matches.length > 1) { - throw new Error("Ambiguous weekday"); - } - return weekdayNames.indexOf(matches[0]); -} - -/* Array of objects, each has 're', a regular expression and 'handler', a - function for creating a date from something that matches the regular - expression. Handlers may throw errors if string is unparseable. -*/ -var dateParsePatterns = [ - // Today - { re: /^tod/i, - handler: function() { - return new Date(); - } - }, - // Tomorrow - { re: /^tom/i, - handler: function() { - var d = new Date(); - d.setDate(d.getDate() + 1); - return d; - } - }, - // Yesterday - { re: /^yes/i, - handler: function() { - var d = new Date(); - d.setDate(d.getDate() - 1); - return d; - } - }, - // 4th - { re: /^(\d{1,2})(st|nd|rd|th)?$/i, - handler: function(bits) { - var d = new Date(); - d.setDate(parseInt(bits[1], 10)); - return d; - } - }, - // 4th Jan - { re: /^(\d{1,2})(?:st|nd|rd|th)? (\w+)$/i, - handler: function(bits) { - var d = new Date(); - d.setDate(parseInt(bits[1], 10)); - d.setMonth(parseMonth(bits[2])); - return d; - } - }, - // 4th Jan 2003 - { re: /^(\d{1,2})(?:st|nd|rd|th)? (\w+),? (\d{4})$/i, - handler: function(bits) { - var d = new Date(); - d.setDate(parseInt(bits[1], 10)); - d.setMonth(parseMonth(bits[2])); - d.setYear(bits[3]); - return d; - } - }, - // Jan 4th - { re: /^(\w+) (\d{1,2})(?:st|nd|rd|th)?$/i, - handler: function(bits) { - var d = new Date(); - d.setDate(parseInt(bits[2], 10)); - d.setMonth(parseMonth(bits[1])); - return d; - } - }, - // Jan 4th 2003 - { re: /^(\w+) (\d{1,2})(?:st|nd|rd|th)?,? (\d{4})$/i, - handler: function(bits) { - var d = new Date(); - d.setDate(parseInt(bits[2], 10)); - d.setMonth(parseMonth(bits[1])); - d.setYear(bits[3]); - return d; - } - }, - // next Tuesday - this is suspect due to weird meaning of "next" - { re: /^next (\w+)$/i, - handler: function(bits) { - var d = new Date(); - var day = d.getDay(); - var newDay = parseWeekday(bits[1]); - var addDays = newDay - day; - if (newDay <= day) { - addDays += 7; - } - d.setDate(d.getDate() + addDays); - return d; - } - }, - // last Tuesday - { re: /^last (\w+)$/i, - handler: function(bits) { - throw new Error("Not yet implemented"); - } - }, - // mm/dd/yyyy (American style) - { re: /(\d{1,2})\/(\d{1,2})\/(\d{4})/, - handler: function(bits) { - var d = new Date(); - d.setYear(bits[3]); - d.setDate(parseInt(bits[2], 10)); - d.setMonth(parseInt(bits[1], 10) - 1); // Because months indexed from 0 - return d; - } - }, - // yyyy-mm-dd (ISO style) - { re: /(\d{4})-(\d{1,2})-(\d{1,2})/, - handler: function(bits) { - var d = new Date(); - d.setYear(parseInt(bits[1])); - d.setMonth(parseInt(bits[2], 10) - 1); - d.setDate(parseInt(bits[3], 10)); - return d; - } - }, -]; - -function parseDateString(s) { - for (var i = 0; i < dateParsePatterns.length; i++) { - var re = dateParsePatterns[i].re; - var handler = dateParsePatterns[i].handler; - var bits = re.exec(s); - if (bits) { - return handler(bits); - } - } - throw new Error("Invalid date string"); -} - -function fmt00(x) { - // fmt00: Tags leading zero onto numbers 0 - 9. - // Particularly useful for displaying results from Date methods. - // - if (Math.abs(parseInt(x)) < 10){ - x = "0"+ Math.abs(x); - } - return x; -} - -function parseDateStringISO(s) { - try { - var d = parseDateString(s); - return d.getFullYear() + '-' + (fmt00(d.getMonth() + 1)) + '-' + fmt00(d.getDate()) - } - catch (e) { return s; } -} -function magicDate(input) { - var messagespan = input.id + 'Msg'; - try { - var d = parseDateString(input.value); - input.value = d.getFullYear() + '-' + (fmt00(d.getMonth() + 1)) + '-' + - fmt00(d.getDate()); - input.className = ''; - // Human readable date - if (document.getElementById(messagespan)) { - document.getElementById(messagespan).firstChild.nodeValue = d.toDateString(); - document.getElementById(messagespan).className = 'normal'; - } - } - catch (e) { - input.className = 'error'; - var message = e.message; - // Fix for IE6 bug - if (message.indexOf('is null or not an object') > -1) { - message = 'Invalid date string'; - } - if (document.getElementById(messagespan)) { - document.getElementById(messagespan).firstChild.nodeValue = message; - document.getElementById(messagespan).className = 'error'; - } - } -} +/* 'Magic' date parsing, by Simon Willison (6th October 2003) + http://simon.incutio.com/archive/2003/10/06/betterDateInput + Adapted for 6newslawrence.com, 28th January 2004 +*/ + +/* Finds the index of the first occurence of item in the array, or -1 if not found */ +if (typeof Array.prototype.indexOf == 'undefined') { + Array.prototype.indexOf = function(item) { + var len = this.length; + for (var i = 0; i < len; i++) { + if (this[i] == item) { + return i; + } + } + return -1; + }; +} +/* Returns an array of items judged 'true' by the passed in test function */ +if (typeof Array.prototype.filter == 'undefined') { + Array.prototype.filter = function(test) { + var matches = []; + var len = this.length; + for (var i = 0; i < len; i++) { + if (test(this[i])) { + matches[matches.length] = this[i]; + } + } + return matches; + }; +} + +var monthNames = gettext("January February March April May June July August September October November December").split(" "); +var weekdayNames = gettext("Sunday Monday Tuesday Wednesday Thursday Friday Saturday").split(" "); + +/* Takes a string, returns the index of the month matching that string, throws + an error if 0 or more than 1 matches +*/ +function parseMonth(month) { + var matches = monthNames.filter(function(item) { + return new RegExp("^" + month, "i").test(item); + }); + if (matches.length == 0) { + throw new Error("Invalid month string"); + } + if (matches.length > 1) { + throw new Error("Ambiguous month"); + } + return monthNames.indexOf(matches[0]); +} +/* Same as parseMonth but for days of the week */ +function parseWeekday(weekday) { + var matches = weekdayNames.filter(function(item) { + return new RegExp("^" + weekday, "i").test(item); + }); + if (matches.length == 0) { + throw new Error("Invalid day string"); + } + if (matches.length > 1) { + throw new Error("Ambiguous weekday"); + } + return weekdayNames.indexOf(matches[0]); +} + +/* Array of objects, each has 're', a regular expression and 'handler', a + function for creating a date from something that matches the regular + expression. Handlers may throw errors if string is unparseable. +*/ +var dateParsePatterns = [ + // Today + { re: /^tod/i, + handler: function() { + return new Date(); + } + }, + // Tomorrow + { re: /^tom/i, + handler: function() { + var d = new Date(); + d.setDate(d.getDate() + 1); + return d; + } + }, + // Yesterday + { re: /^yes/i, + handler: function() { + var d = new Date(); + d.setDate(d.getDate() - 1); + return d; + } + }, + // 4th + { re: /^(\d{1,2})(st|nd|rd|th)?$/i, + handler: function(bits) { + var d = new Date(); + d.setDate(parseInt(bits[1], 10)); + return d; + } + }, + // 4th Jan + { re: /^(\d{1,2})(?:st|nd|rd|th)? (\w+)$/i, + handler: function(bits) { + var d = new Date(); + d.setDate(parseInt(bits[1], 10)); + d.setMonth(parseMonth(bits[2])); + return d; + } + }, + // 4th Jan 2003 + { re: /^(\d{1,2})(?:st|nd|rd|th)? (\w+),? (\d{4})$/i, + handler: function(bits) { + var d = new Date(); + d.setDate(parseInt(bits[1], 10)); + d.setMonth(parseMonth(bits[2])); + d.setYear(bits[3]); + return d; + } + }, + // Jan 4th + { re: /^(\w+) (\d{1,2})(?:st|nd|rd|th)?$/i, + handler: function(bits) { + var d = new Date(); + d.setDate(parseInt(bits[2], 10)); + d.setMonth(parseMonth(bits[1])); + return d; + } + }, + // Jan 4th 2003 + { re: /^(\w+) (\d{1,2})(?:st|nd|rd|th)?,? (\d{4})$/i, + handler: function(bits) { + var d = new Date(); + d.setDate(parseInt(bits[2], 10)); + d.setMonth(parseMonth(bits[1])); + d.setYear(bits[3]); + return d; + } + }, + // next Tuesday - this is suspect due to weird meaning of "next" + { re: /^next (\w+)$/i, + handler: function(bits) { + var d = new Date(); + var day = d.getDay(); + var newDay = parseWeekday(bits[1]); + var addDays = newDay - day; + if (newDay <= day) { + addDays += 7; + } + d.setDate(d.getDate() + addDays); + return d; + } + }, + // last Tuesday + { re: /^last (\w+)$/i, + handler: function(bits) { + throw new Error("Not yet implemented"); + } + }, + // mm/dd/yyyy (American style) + { re: /(\d{1,2})\/(\d{1,2})\/(\d{4})/, + handler: function(bits) { + var d = new Date(); + d.setYear(bits[3]); + d.setDate(parseInt(bits[2], 10)); + d.setMonth(parseInt(bits[1], 10) - 1); // Because months indexed from 0 + return d; + } + }, + // yyyy-mm-dd (ISO style) + { re: /(\d{4})-(\d{1,2})-(\d{1,2})/, + handler: function(bits) { + var d = new Date(); + d.setYear(parseInt(bits[1])); + d.setMonth(parseInt(bits[2], 10) - 1); + d.setDate(parseInt(bits[3], 10)); + return d; + } + }, +]; + +function parseDateString(s) { + for (var i = 0; i < dateParsePatterns.length; i++) { + var re = dateParsePatterns[i].re; + var handler = dateParsePatterns[i].handler; + var bits = re.exec(s); + if (bits) { + return handler(bits); + } + } + throw new Error("Invalid date string"); +} + +function fmt00(x) { + // fmt00: Tags leading zero onto numbers 0 - 9. + // Particularly useful for displaying results from Date methods. + // + if (Math.abs(parseInt(x)) < 10){ + x = "0"+ Math.abs(x); + } + return x; +} + +function parseDateStringISO(s) { + try { + var d = parseDateString(s); + return d.getFullYear() + '-' + (fmt00(d.getMonth() + 1)) + '-' + fmt00(d.getDate()) + } + catch (e) { return s; } +} +function magicDate(input) { + var messagespan = input.id + 'Msg'; + try { + var d = parseDateString(input.value); + input.value = d.getFullYear() + '-' + (fmt00(d.getMonth() + 1)) + '-' + + fmt00(d.getDate()); + input.className = ''; + // Human readable date + if (document.getElementById(messagespan)) { + document.getElementById(messagespan).firstChild.nodeValue = d.toDateString(); + document.getElementById(messagespan).className = 'normal'; + } + } + catch (e) { + input.className = 'error'; + var message = e.message; + // Fix for IE6 bug + if (message.indexOf('is null or not an object') > -1) { + message = 'Invalid date string'; + } + if (document.getElementById(messagespan)) { + document.getElementById(messagespan).firstChild.nodeValue = message; + document.getElementById(messagespan).className = 'error'; + } + } +}