Looping through all images within multiple directories in ColdFusion - loops

Question

I'm working on an image manipulation script to create smaller thumbnail images of the images that are already on the server.
The directory structure that I need to search through is as follows:
Content
-Att1
-image1
-imgA1_1.png
-imgA1_1_large.png
-image2
-imgA1_2.png
-imgA2_large.png
-image3
-imgA1_3.png
-imgA1_3_large.png
-Att2
-image1
-imgA2_1.png
-imgA2_1_large.png
-image2
-imgA2_2.png
-imgA2_2_large.png
-image3
-imgA2_3.png
-imgA2_3_large.png
-Att3
-image1
-imgA3_1.png
-imgA3_1_large.png
-image2
-imgA3_2.png
-imgA3_2_large.png
-image3
-imgA3_3.png
-imgA3_3_large.png
etc...
So what I would like to to is be able to loop through all of the images shown above and if the dimensions of that image exceed 500-500 then create a thumbnail that is 100-100.
Is there any way of doing this without looping through each directory?

Answer 1

cfdirectory has a recurse attribute. This will loop through all the folders, but it won't require you to write code to loop through all the folders
<cfdirectory directory="yourDirectory" recurse="yes">

Answer 2

If you are dealing with very large directories cfdirecotry ends up being very slow. Here is a function that uses java that I wrote since we have some directories that have 1000s of images. It looks through and creates a query result for all your files and is MUCH faster
<cffunction name="getDirectorylisting" returntype="query" output="true">
<cfargument name="dirName" type="string" required="true" />
<cfargument name="recurse" type="boolean" default="false" required="false" />
<cfargument name="dirInfo1" type="query" default="#queryNew('datelastmodified,name,size,type,directory,hidden,pathname')#">
<cfscript>
var thisFile = '';
var listFiles = '';
var pathToParse = trim(dirName);
var thisPath = '';
var relPath = '';
var theFileObj = '';
var isDir = '';
var isFile = '';
var thisSize = '';
var lastModified = '';
var isHidden = '';
var theType = '';
if (left(dirName,2) == 'c:' || left(dirName,2) == 'd:' || left(dirName,2) == 'e:' || left(dirName,2) == '\\'){
//do nothing path is already absolute
} else {
pathToParse = expandPath(pathToparse);
}
if(right(pathToParse,1) == '/' || right(pathToParse,1) == '\'){pathToParse = left(pathToParse,len(pathToParse)-1);}
if(right(dirName,1) == '/' || right(dirName,1) == '\'){dirName = left(dirName,len(dirName)-1);}
if (directoryExists(pathToParse)){
listFiles = createObject("java","java.io.File").init(pathToParse).list();
for (thisFile=1;thisFile<=arrayLen(listFiles);thisFile=thisFile+1){
queryAddRow(arguments.dirInfo1);
thispath = "#pathToParse#\#listFiles[thisFile]#";
relpath = "#dirName#/#listFiles[thisFile]#";
theFileObj = createObject("java","java.io.File").init(thispath);
isDir = theFileObj.isDirectory();
isFile = theFileObj.isFile();
thisSize = val(theFileObj.length());
lastModified = theFileObj.lastModified();
isHidden = theFileObj.isHidden();
theType = "dir";
if (isFile){theType = "file";}
querySetCell(arguments.dirInfo1,"datelastmodified", lastModified );
querySetCell(arguments.dirInfo1,"name", listFiles[thisFile] );
querySetCell(arguments.dirInfo1,"size", thisSize );
querySetCell(arguments.dirInfo1,"directory", pathToParse );
querySetCell(arguments.dirInfo1,"hidden", isHidden );
querySetCell(arguments.dirInfo1,"type", theType );
querySetCell(arguments.dirInfo1,"pathName", relPath );
if (arguments.recurse && isDir && !isHidden){
arguments.dirInfo1 = getDirectoryListing(relPath,true, arguments.dirInfo1);
}
}
}
return arguments.dirInfo1;
</cfscript>
</cffunction>