Ask Ben: Creating An Archive Folder / File List (Part II)

Posted February 24, 2007 at 10:38 AM

Tags: ColdFusion, Ask Ben

A while back, I was asked how to make a simple ColdFusion page that would allow the viewing of archive folders and their contents. At the time, the page was designed to handle a single list of directories and then a single list of sub-files. I have been asked to update that code to allow for sub-directories and sub-sub-directories (you get the point).

Below is the updated code that allows for a single page to point to a directory and drill down through all the sub directories. All files are linked directly. All sub folders get viewed via the URL.folder variable that keeps getting passed back to the same ColdFusion script.

I am not taking into account the different slashes on different platforms. For this demo, the backward slash is considered a "server" slash for a server path and the forward slash is considered a "web" slash for web-based paths (ie. URLs).

 Launch code in new window » Download code as text file »

  • <!--- Kill extra output. --->
  • <cfsilent>
  •  
  • <!---
  • This is the name of the archive folder for which we
  • want to list out the archive documents and sub folders.
  • --->
  • <cfparam
  • name="URL.folder"
  • type="string"
  • default=""
  • />
  •  
  • <!--- Decode the folder value. --->
  • <cfset URL.folder = UrlDecode( URL.folder ) />
  •  
  • <!---
  • For security reasons, we want to get rid of any suspect
  • values in the folder variable. These include "../"
  • which would go to a parent directory or "/" which will
  • go to the root perhaps.
  • --->
  • <cfset URL.folder = URL.folder.ReplaceAll(
  • "(\.\.[\\/])+", ""
  • ).ReplaceAll(
  • "([\\/]){2,}", "$1"
  • ) />
  •  
  • <!---
  • Set the directory path of the root archive
  • directory (this one). This is the folder in which
  • you want to allow users to browse archive folders
  • and files.
  • --->
  • <cfset strRoot = ExpandPath( "./" ) />
  •  
  •  
  • <!---
  • Check to see if we have an archive folder selected.
  • If we do, then we want to query that one. If not,
  • then we want to get the list of all the archive folders.
  • Furthermore, if we have an archive folder, just
  • check to make sure the folder exists.
  • --->
  • <cfif (
  • Len( URL.folder ) AND
  • DirectoryExists( strRoot & "\" & URL.folder )
  • )>
  •  
  • <!--- Set the query path to be the archive folder. --->
  • <cfset strQueryPath = (strRoot & "\" & URL.folder) />
  •  
  • <!---
  • Add the trailing slash to the folder for use with
  • further linking. Going foward, we can assume the
  • the folder variable will have this trailing slash.
  • --->
  • <cfset URL.folder = (URL.folder & "\") />
  •  
  • <cfelse>
  •  
  • <!---
  • We have no archive folder selected (or it did not
  • exist). Query the root directory.
  • --->
  • <cfset strQueryPath = strRoot />
  •  
  • <!---
  • Reset the folder variable so we don't get confused
  • later on.
  • --->
  • <cfset URL.folder = "" />
  •  
  • </cfif>
  •  
  •  
  • <!---
  • Query for the files / folders in the selected
  • directory (might be root OR an archive folder).
  • --->
  • <cfdirectory
  • action="LIST"
  • directory="#strQueryPath#"
  • recurse="false"
  • name="qDirectoryList"
  • />
  •  
  • </cfsilent>
  •  
  • <cfoutput>
  • <html>
  • <head>
  • <title>Document Archive</title>
  • </head>
  • <body>
  •  
  • <h1>
  • Document Archive
  • </h1>
  •  
  • <!---
  • Check to see if we are deeper than the root directory.
  • We will know that we are if our folder variable has
  • some value in it. If it does, we will provide tools
  • to jump up a single directory or to go back to the
  • archivee root.
  • --->
  • <cfif Len( URL.folder )>
  •  
  • <h2>
  • #URL.folder#
  • </h2>
  •  
  • <p>
  • &laquo; <a href="#CGI.script_name#">Back to Archive Root</a>
  • </p>
  •  
  •  
  • <!---
  • When outputting the parent directory path, be sure
  • to strip out the last directory and traililng slash
  • from the existing folder path.
  • --->
  • <p>
  • &laquo; <a href="#CGI.script_name#?folder=#UrlEncodedFormat( URL.folder.ReplaceAll( "[\\/]?[^\\/]+[\\/]?$", "" ) )#">Back to Parent Directory</a>
  • </p>
  •  
  • <hr />
  •  
  • </cfif>
  •  
  •  
  • <!---
  • Loop over directory list. This may contain both files
  • and folders. If we come across a folder or sub
  • directory, then we will provide a link to view that
  • directory (through the archive viewer). If we come
  • across a file, we will link directly to that file.
  • --->
  • <cfloop query="qDirectoryList">
  •  
  • <!---
  • Check to see if we are dealing with a sub folder.
  • --->
  • <cfif (qDirectoryList.Type EQ "Dir")>
  •  
  • <!---
  • We are dealing with a directory. Add this folder
  • name to the folder path we are sending back
  • in the URL. Since we are dealing with a server
  • path at this point, replace any "Web" slashes
  • with "server" slashes... / -to- \.
  • --->
  • <p>
  • <a href="#CGI.script_name#?folder=#UrlEncodedFormat( URL.folder.ReplaceAll( "/", "\\" ) & qDirectoryList.name )#">#qDirectoryList.name#</a> &raquo;
  • </p>
  •  
  • <cfelse>
  •  
  • <!---
  • We are dealing with a file. Output the link
  • to the file from the root directory (since
  • that is where we still are from the browser's).
  • standpoint. Include the name of the sub folder
  • in the path. Since we are dealing with a web
  • path, replace all "server" slashes with "web"
  • slashes... \ -to- /.
  • --->
  • <p>
  • <a href="./#URL.folder.ReplaceAll( "\\", "/" )##qDirectoryList.name#">#qDirectoryList.name#</a>
  • </p>
  •  
  • </cfif>
  •  
  • </cfloop>
  •  
  • </body>
  • </html>
  • </cfoutput>

Hope that helps.

Download Code Snippet ZIP File

Post Comment  |  Ask Ben  |  Permalink  |  Print Page


You Might Also Be Interested In:




Reader Comments

There are no comments posted for this web log entry.


Post Comment  |  Ask Ben

Recent Blog Comments
MEMISO
Nov 7, 2009 at 5:53 PM
Ask Ben: Javascript String Replace Method
You can find here an advanced function that prepared with javascript replace function. This can make the first letters of words, sentences, lines and whatever you define automatically: http://www.m ... read »
Andrew Neely
Nov 7, 2009 at 4:56 PM
A Moment That Touched Me - The Fountainhead
Ben, Glad you enjoyed the podcast. Yeah, the Tank Riot guys can get really chatty during the episodes, but that's part of the charm of it for me. They've covered everything from Nichola Tesla to Cha ... read »
Bastian E.
Nov 7, 2009 at 4:43 PM
Building A Fixed-Position Bottom Menu Bar (ala FaceBook)
Is it possible to make some more Menü`s ? ... read »
Jill
Nov 7, 2009 at 11:40 AM
How To Unformat Your Code (Like A Pro)
Derek, I think you might be right - sweet! Thanks for the link :) ... read »
Derek
Nov 7, 2009 at 11:25 AM
How To Unformat Your Code (Like A Pro)
I think it would be way easier to just use this http://www.logichammer.com/html-formatter/ He just released v3 and it rocks. ... read »
Jill
Nov 7, 2009 at 7:58 AM
How To Unformat Your Code (Like A Pro)
LMAO - this was pretty funny! I have to admit - I also love to reformat code so I can read it. My boss used to tell me to leave my OCD at home. Now I don't feel so bad after reading everyone else' ... read »
Jose Galdamez
Nov 6, 2009 at 10:10 PM
How To Unformat Your Code (Like A Pro)
The timing of this post is just uncanny. I spent the last 15-20 minutes manually un-formatting my "Ben Nadel" style code within a CFC of mine. I was really digging the readability a few weeks ago, bu ... read »
Roe
Nov 6, 2009 at 5:11 PM
Passing Arrays By Reference In ColdFusion - SWEEET!
ArraySort also reorders the results of these java obj's ... read »