<%--
#FILE: updated.jsp - Version 1.0
#
#       This jsp script will automatically determine and print an 
#"updated" image and/or the date a specified file was last "updated". 
#
#INSTALLATION:
#	There are many ways this script can be installed and used. The procedure
#is what I recommend for jsp beginners. If you're more advanced and know
#what you're doing, by all means feel free to install this script however
#you wish.
#
#	1) Save the JSP code in a separate file entitled "updated.jsp"
#in your root web directory
#
#	2) In your JSP files where you will have the "updated" information
#displayed, be sure to "include" the "updated.jsp" file. 
#	EXAMPLE: <%@ include file="updated.jsp" %>
#
#	3)  If the file you have the "include" statement in does not
#import the java util or java.io packages, you will need to import these
# similar to the following:
#	<%@ page import="java.io.*,java.util.*;" %>
#
#	4) Set the value for UPDATED_IMAGE_URL to be the URL to the
#"updated" image you wish to have displayed.
#
#	5) Call the method "PrintUpdatedInfo" with the appropriate
#parameters as described below wherever you wish to have the "updated"
#notification displayed.
#
#	PrintUpdatedInfo (files,days,mode,out)
#
#	EXAMPLES:
#	PrintUpdatedInfo ("F:/Inetpub/wwwroot/test.jsp",3,2,out)
#	PrintUpdatedInfo ("F:/Inetpub/wwwroot/test.jsp|F:/Inetpub/wwwroot/default.asp",7,0,out)
#
#RUNNING:
#	The function "PrintUpdatedInfo" requires 4 parameters: 
#	PrintUpdatedInfo (files,days,mode,out)
#	described below:
#
#	1) files
#		the actual file or files to test for their last modification date. This parameter
#should be the FULL OPERATING SYSTEM PATH, AND NOT A URL!!! The file(s) to test can
#be ANY file. 
#		To test multiple files, separate each file with a pipe "|" character. This is especially
#useful for HTML "frame" pages. That is, suppose you have a table of contents page and the main
#information page, and you want "updated" printed whenever either one of those two pages is updated.
#	EXAMPLES: 
#	F:/Inetpub/wwwroot/scripts/some_file.jsp
#	F:/Inetpub/wwwroot/images/myself.jpg|F:/Inetpub/wwwroot/index.html
#	F:/Inetpub/wwwroot/default.jsp
#
#	2) days
#		the number of days previous to today's date files should have been updated
#	to have the "updated" info displayed. Specifying "-1" means no limit and the 
#	"updated" info will always be printed. 
#	EXAMPLES:
#		i) If "today" is the 27th, the file "test.html" was updated on the 21st, and days
#is specified to be 4, the "updated" would NOT be displayed because test.html was not
#updated within the last 4 days.
#		ii) If "today" is the 27th, the file "test.html" was updated on the 21st, and days
#is specified to be 7, the "updated" WOULD be displayed because test.html was 
#updated within the last 7 days.
#		iii) If "today" is the 27th, the file "test.html" was updated on the 21st, and days
#is specified to be -1, the "updated" WOULD always be displayed.
#
#	3) mode
#		Can only be one of three integer values:
#		0 :	Print both the "updated" image and the textual date
#		1 : Print the "updated" image only
#		2 : Print the textual date only of the file's last update
#
#EXAMPLE USES (last two show testing of multiple files) :
#PrintUpdatedInfo("F:/Inetpub/wwwroot/scripts/updated/updated.jsp",3,1,out)
#PrintUpdatedInfo("/usr/local/public_html/menu.html",-1,1,out)
#PrintUpdatedInfo("F:/Inetpub/wwwroot/default.asp|F:/Inetpub/wwwroot/info/index.html|F:/Inetpub/wwwroot/whatever.html",5,0,out)
#PrintUpdatedInfo("/var/usr/public_html/images/logo.gif|/var/usr/public_html/images/me.jpg",8,2,out)
#
#	4) out
#		The JSP "out" object.
#
#LICENSE:
#       Finally, this "basic" code is free, and comes with absolutely NO
#warranties, either expressed or implied. Feel free to do what you want
#with it. Feel free to build upon it. If you did not get this code
#from http://www.davelozinski.com, you don't have the original.
#
#REVISION HISTORY:
#		05/29/04	1.0	Original Version
#
#CONTACT INFORMATION:
#	http://www.davelozinski.com/cgi-bin/email_lozinski.pl
##############################################################
--%>
<%!
public void PrintUpdatedInfo (String files,int days,int mode,
	javax.servlet.jsp.JspWriter out) 
	throws java.io.IOException {

//#the URL to the "updated" image you wish to have displayed.
final String UPDATED_IMAGE_URL = "/gfx/updated.gif";

//#####################################################################
//######## NOTHING FROM HERE DOWN SHOULD NEED TO BE CONFIGURED ########
//#####################################################################

boolean error = false;
int x = 0;

StringTokenizer fileList = new StringTokenizer(files,"|");
int UpperBound = fileList.countTokens();
String[] file_arr = new String[UpperBound];
while (fileList.hasMoreTokens()) {
	file_arr[x] = fileList.nextToken();
	x += 1;	
}

for (x=0; x<file_arr.length; x++) {
	if (!new File(file_arr[x]).exists()) {
		out.println ("<B>ERROR!</B> File \"" + file_arr[x] + "\" does not exist!<BR>\n");
		error = true;
	}
}
if (days < -1) {
	out.println ("<B>ERROR!</B> The 2nd parameter must be a whole number greater than or equal to -1!<BR>\n");
	error = true;
}
if (mode < 0 || mode > 2) {
	out.println ("<B>ERROR!</B> The 3rd parameter can only be 0, 1, or 2!<BR>\n");
	error = true;
}
if (!error) {
	for (x=0; x<file_arr.length; x++) {

		//Get the last date the file was modified
		GregorianCalendar filesDate = new GregorianCalendar();
		filesDate.setTime(new Date(new File(file_arr[x]).lastModified()));
		String updated_date = (filesDate.get(Calendar.MONTH) + 1) + "/" + filesDate.get(Calendar.DATE) + "/" + filesDate.get(Calendar.YEAR);
		//Add in the date difference passed in
		filesDate.add(Calendar.DATE,days);
		//Get the current date
		GregorianCalendar newDate = new GregorianCalendar();
		newDate.setTime(new Date());

		if (days == -1 || newDate.before((Object)filesDate)) {
			if (mode == 0 || mode == 1) {	//#Print the "updated" image
				out.println ("<IMG SRC=\"" + UPDATED_IMAGE_URL + "\" ALT=\"UPDATED " + updated_date + "\">");
			} 
			if (mode == 0 || mode == 2) {	//#Print the "updated" date
				out.println (updated_date);
			}
			break; //#At least one of the files has been updated. No reason to check the rest.
		}
	} //#for-loop
} //#!error	

} //#PrintUpdatedInfo
//##############################################################
%>