aform.js

单片机原厂资料-无线电配刊光盘2003年第3期-496M-pdf版.zip

	}
	info = AFExtractRegExp(AFAMRegExp, string);
	if(info)
	{
		string = info[0];
	}
	info = AFExtractRegExp(AFTimeLongRegExp, string);
	if(info)
	{
		info[1] += pm;
		return info;
	}
	info = AFExtractRegExp(AFTimeShortRegExp, string);
	if(info)
	{
		info[1] += pm;
		return info;
	}

	return null;
}

function AFGetMonthIndex(string)
{	/* attempts to identify the given string as a month or a valid abbreviation,
	 * it expects the given string to be the valid month from the matced RegExp.
	 * returns the month index (January = 1) or zero on failure */
	var monthre = new RegExp(string + "\\[(\\d+)\\]", "i");
	var result = monthre.exec(IDS_MONTH_INFO);
	
	if(string && result) return 1.0 * result[1];
	return 0;
}

function AFMatchMonth(string)
{	/* attempts to find a valid month embedded in a string; returns the month
	 * index (January = 1) or zero on failure */

	for(var it = 0; it < AFMonthsRegExp.length; it++)
		if(AFMonthsRegExp[it].test(string))
			return AFGetMonthIndex(RegExp.lastMatch);
	return 0;
}

function AFGetMonthString(index)
{	/* returns the string corresponding to the given month or a string that
	 * is indicative of the fact that the index was invalid */
	var monthre = new RegExp("(\\w+)\\[" + index + "\\]");
	var result = monthre.exec(IDS_MONTH_INFO);

	if(result) return result[1];
	return IDS_INVALID_MONTH;
}

function AFParseTime(string, date)
{	/* attempts to parse a string containing a time; returns null on failure
	 * or a Date object on success. Time can be in ugly format. */
	var pm, am;
	var nums = AFExtractNums(string);
	if (!date)
		date = new Date();
	var hour, minutes, seconds;

	if(!string) return date;
	if(!nums) return null;
	if(nums.length < 2 || nums.length > 3) return null;
	if(AFPMRegExp.test(string)) pm = true;
	else pm = false;
	if(AFAMRegExp.test(string)) am = true;
	else am = false;
	hour = new Number(nums[0]); /* force it to number */
	if(pm)
	{
		if(hour < 12) hour += 12;
	}
	else if (am)
	{
		if(hour >= 12) hour -= 12;
	}
	minutes = nums[1];
	if(nums.length == 3) seconds = nums[2];
	else seconds = 0;
	date.setHours(hour);
	date.setMinutes(minutes);
	date.setSeconds(seconds);
	if(date.getHours() != hour)
		return null;
	if(date.getMinutes() != minutes)
		return null;
	if(date.getSeconds() != seconds)
		return null;
	return date;
}

function AFDateFromYMD(nYear, nMonth, nDate)
{	/* Validates the given fields and returns a date based on them */
	var dDate = new Date();

	dDate.setFullYear(nYear, nMonth, nDate);
	if(dDate.getFullYear() != nYear)
		return null;
	if(dDate.getMonth() != nMonth)
		return null;
	if(dDate.getDate() != nDate)
		return null;
	return dDate;
}

function AFParseDateEx(cString, cOrder)
{	/* Attempts to parse a string containing some form of date; returns null
	** on failure or a Date object on success. cOrder should be the order in
	** which the date is entered (e.g. ymd, mdy, etc.). Use AFParseDateOrder to
	** generate this string from an arbitrary format string. */
	var nYear;
	var nMonth;
	var nDate;
	var nYCount;
	var dDate = new Date();

	dDate.setHours(12, 0, 0);

	/* Empty string returns current date/time. */
	if (!cString) { 
		return dDate;
	}

	nYCount = AFParseDateYCount(cOrder); /* count the number of digits for year in the selected format */
	cOrder = AFParseDateOrder(cOrder); /* make sure its in the "ymd" format */

	/* Extract any time information in the string. */
	var info = AFExtractTime(cString);
	if (info)
		cString = info[0];

	/* Break down the date into an array of numbers. */
	var aNums = AFExtractNums(cString);
	if(!aNums) 
		return null;	/* No numbers? */

	/* User supplied three numbers. */
	if (aNums.length == 3) {
		nYear = 1.0 * aNums[cOrder.indexOf("y")];
		if (nYCount > 2 && nYear < 100)
			return null; /* must enter 4 digits for the year to match with the format of the field */
		nYear = AFDateHorizon(nYear);

		dDate = AFDateFromYMD(nYear, aNums[cOrder.indexOf("m")] - 1, aNums[cOrder.indexOf("d")]);
		if (info)
			dDate = AFParseTime(info[1], dDate);
		return dDate;
	}

	/* Find text based month, if supplied. */
	nMonth = AFMatchMonth(cString);	

	/* User supplied two numbers. */
	if(aNums.length == 2) {
		if (nMonth) {
			/* Easy case, the month was text and we have two numbers. */
			if (cOrder.indexOf("y") < cOrder.indexOf("d")) {
				nYear = 1.0 * aNums[0];
				nDate = aNums[1];
			} else {
				nYear = 1.0 * aNums[1];
				nDate = aNums[0];
			}
			if (nYCount > 2 && nYear < 100)
				return null; /* must enter 4 digits for the year to match with the format of the field */
		
			nYear = AFDateHorizon(nYear);
			dDate = AFDateFromYMD(nYear, nMonth - 1, nDate);

			if (info)
				dDate = AFParseTime(info[1], dDate);
			return dDate;
		}

		/* More difficult case. We have two numbers and three slots, how
		** to allocate them? */
		if (cOrder.indexOf("y") < cOrder.indexOf("d"))	{
			/* Year comes before date and as such we allocate the two
			** numbers to the month and the year only. */
			if (cOrder.indexOf("y") < cOrder.indexOf("m")) {
				nYear = 1.0 * aNums[0];
				nMonth = aNums[1];
			} else {
				nYear = 1.0 * aNums[1];
				nMonth = aNums[0];
			}
			if (nYCount > 2 && nYear < 100)
				return null; /* must enter 4 digits for the year to match with the format of the field */
		
			nYear = AFDateHorizon(nYear);
			dDate = AFDateFromYMD(nYear, nMonth - 1, 1);
		} else {
			/* Date comes before year and so we allocate the two numbers
			** to the date and the month only. */
			nYear = dDate.getFullYear();
			if (cOrder.indexOf("d") < cOrder.indexOf("m")) {
				dDate = AFDateFromYMD(nYear, aNums[1] - 1, aNums[0]);
			} else {
				dDate = AFDateFromYMD(nYear, aNums[0] - 1, aNums[1]);
			}
		}
	
		if (info)
			dDate = AFParseTime(info[1], dDate);
		return dDate;
	}

	/* User supplied one number. */
	if(aNums.length == 1)	{
		if (nMonth) {
			/* We have one number and two slots (y/d) and need to allocate
			** them based on who came first in the format. */
			if(cOrder.indexOf("y") < cOrder.indexOf("d")) {
				nYear = 1.0 * aNums[0];
				if (nYCount > 2 && nYear < 100)
					return null; /* must enter 4 digits for the year to match with the format of the field */
			
				nYear = AFDateHorizon(nYear);
				dDate = AFDateFromYMD(nYear, nMonth - 1, 1);
			} else {
				nYear = dDate.getFullYear();
				dDate = AFDateFromYMD(nYear, nMonth - 1, aNums[0]);
			}
			if (info)
				dDate = AFParseTime(info[1], date);
			return dDate;
		}

		/* We have one number and three slots and need to allocate them
		** based on who came first in the format. */
		nYear = dDate.getFullYear();
		nMonth = dDate.getMonth();
		nDate = dDate.getDate();
		switch (cOrder.charAt(0)) {
			case "y":
				nYear = 1.0 * aNums[0];
				if (nYCount > 2 && nYear < 100)
					return null; /* must enter 4 digits for the year to match with the format of the field */
			
				nYear = AFDateHorizon(nYear);
			break;
			case "m":
				nMonth = aNums[0] - 1;
			break;
			case "d":
				nDate = aNums[0];
			break;
		}
		dDate = AFDateFromYMD(nYear, nMonth, nDate);


		if (info)
			dDate = AFParseTime(info[1], date);
		return dDate;
	}

	/* No idea how to deal with the other combinations. */
	return null;
}

function AFDateHorizon(nYear)
{	/* Takes the year supplied and applies the date horizon heuristic.
	** All years between 50 and 100 we add 1900. All years less than 50 we add 2000. */
	if (nYear < 100 && nYear >= 50) {
		nYear += 1900;
	} else if (nYear >= 0 && nYear < 50) {
		nYear += 2000;
	}

	return nYear;
}

function AFParseDate(string, longEntry, shortEntry, wordMonthEntry, monthYearEntry)
{	/* OBSOLETE: Use AFParseDateEx instead. */
	var nums;
	var year, month;
	var date;
	var info = AFExtractTime(string);

	if(!string) return new Date();

	if(info)
		string = info[0];

	date = new Date();
	nums = AFExtractNums(string);
	if(!nums) return null;
	if(nums.length == 3)
	{
		year = 1.0 * nums[eval(longEntry.charAt(0))];
		year = AFDateHorizon(year);
		date = AFDateFromYMD(year, nums[eval(longEntry.charAt(1))] - 1, nums[eval(longEntry.charAt(2))]);
		if (info)
			date = AFParseTime(info[1], date);
		return date;
	}
	month = AFMatchMonth(string);
	if(nums.length == 2)
	{
		if(month)
		{
			year = 1.0 * nums[eval(wordMonthEntry.charAt(0))];
			year = AFDateHorizon(year);
			date = AFDateFromYMD(year, month - 1, nums[eval(wordMonthEntry.charAt(1))]);
			if (info)
				date = AFParseTime(info[1], date);
			return date;
		}
		if(monthYearEntry)
		{
			year = 1.0 * nums[eval(monthYearEntry.charAt(0))];
			year = AFDateHorizon(year);
			date = AFDateFromYMD(year, nums[eval(monthYearEntry.charAt(1))] - 1, 1);
		}
		else
			date = AFDateFromYMD(date.getFullYear(),
				nums[eval(shortEntry.charAt(0))] - 1,
				nums[eval(shortEntry.charAt(1))]);
		if (info)
			date = AFParseTime(info[1], date);
		return date;
	}
	if(month && nums.length == 1)
	{
		if(monthYearEntry)
		{
			year = 1.0 * nums[0];
			year = AFDateHorizon(year);
			date = AFDateFromYMD(year, month - 1, 1);
		}
		else
			date = AFDateFromYMD(date.getFullYear(), month - 1,	nums[0]);
		if (info)
			date = AFParseTime(info[1], date);
		return date;
	}

	return null;
}

function AFParseDateWithPDF(value, pdf)
{ /* OBSOLETE: Use AFParseDateEx instead. */
	var cOldFormats = new Array(
		"m/d", "m/d/yy", "mm/dd/yy", "mm/yy", "d-mmm", "d-mmm-yy", "dd-mmm-yy",
		"yy-mm-dd", "mmm-yy", "mmmm-yy", "mmm d, yyyy", "mmmm d, yyyy",
		"m/d/yy h:MM tt", "m/d/yy HH:MM" );
   
	return AFParseDateEx(value, cOldFormats[pdf]);
}

function AFMergeChange(event)
{	/* merges the last change with the uncommitted change */
	var prefix, postfix;
	var value = event.value;

	if(event.willCommit) return event.value;
	if(event.selStart >= 0)
		prefix = value.substring(0, event.selStart);
	else prefix = "";
	if(event.selEnd >= 0 && event.selEnd <= value.length)
		postfix = value.substring(event.selEnd, value.length);
	else postfix = "";
	return prefix + event.change + postfix;
}

function AFRange_Validate(bGreaterThan, nGreaterThan, bLessThan, nLessThan)
{       /* This function validates the current event to ensure that its value is 
	** within the specified range. */
	var cError = "";

	if (event.value == "")
		return;

	if (bGreaterThan && bLessThan) {
		if (event.value < nGreaterThan || event.value > nLessThan)
			cError = util.printf(IDS_GT_AND_LT, nGreaterThan, nLessThan);
	} else if (bGreaterThan) {
		if (event.value < nGreaterThan)
			cError = util.printf(IDS_GREATER_THAN, nGreaterThan);
	} else if (bLessThan) {
		if (event.value > nLessThan)
			cError = util.printf(IDS_LESS_THAN, nLessThan);
	}
	
	if (cError != "") {
		app.alert(cError, 0);
		event.rc = false;
	}
}

function AFSimpleInit(cFunction)
{	/* Convenience function used by AFSimple_Calculate. */
	switch (cFunction)
	{
		case "PRD":
			return 1.0;
			break;
	}

	return 0.0;
}

function AFSimple(cFunction, nValue1, nValue2)
{	/* Convenience function used by AFSimple_Calculate. */
	var nValue = 1.0 * nValue1;

	/* Have to do this otherwise JavaScript thinks it's dealing with strings. */
	nValue1 = 1.0 * nValue1;
	nValue2 = 1.0 * nValue2;

	switch (cFunction)
	{
		case "AVG":
		case "SUM":