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<%@ LANGUAGE="VBScript" %>
<html>
<head>
<title>Directory List</title>
<style type="text/css">
ul.squares { list-style-type: square; }
</style>
</head>
<body bgcolor="#ffffff">
<center>
<table border=0 cellpadding=8 cellspacing=0 width=550>
<tr><td align=center colspan=2>
<hr noshade>
<font color="#cc6600" face="Arial,Helvetica" size=4><b>Directory List</b></font><hr noshade>
</td></tr>
<tr>
<td bgcolor="#cccccc" width=100> </td>
<td width=450>
<font face="Arial,Helvetica" size=2>
This script shows how to read a directory structure in ASP. The display belowshows the contents of a few directories located on this site, including anysubdirectories and their contents.
<p>
Each file is displayed as a link, so you can click on the file name to viewthat particular file.
<p>
<ul class="squares">
<% ListFolderContents (Server.MapPath("/asp")) %>
<% ListFolderContents (Server.MapPath("/dhtml")) %>
<% ListFolderContents (Server.MapPath("/js")) %>
</ul>
<p>
<font color="#cc6600"><b>How it Works</b></font>
<p>
The script makes use of the FileScriptingObject which allows you to accessfiles and directories on the server. These objects contain properties thatdescribe the file or folder name, physical path, size, last modified date andother information.
<p>
Folder objects also contain collections of other FileScriptObjects for eachsubfolder and file in that directory.
<p>
The <b>ListFolderContents</b> subroutine does the work. It requires thephysical path to the folder, which can be found using the built-in
<b>Server.MapPath()</b> function. This function takes either a relative orabsolute URL and returns the physical path to that file. For example, the URL"/graphics/image.gif" might return a path of
"D:\Inetpub\wwwroot\graphics\image.path". Either directories or files can beused.
<p>
<b>Using Recursion</b>
<p>
<b>ListFolderContents</b> first creates a Folder object using the given path.
It displays the folder name then loops through the SubFolders collection ofthat folder. For each subfolder it makes a recursive call to itself, passingthe subfolder path.
<p>
This causes it to walk down through the hierarchial directory structure anddisplay each subfolder and contents. The recursion stops down each branch whenit reaches a subfolder that has no subfolders of it's own.
<p>
<b>Mapping a Physical Path to a URL</b>
<p>
After listing all subfolders, <b>ListFolderContents</b> then loops through theFiles collection, displaying each file name to complete the contents displayfor the given folder.
<p>
Each file is displayed as a standard HTML link. Unfortunately the
<b>Server.MapPath()</b> function has no compliment to convert a physical pathback to a URL. But this is not difficult to do and the script includes afunction called <b>MapURL</b> that takes the file path and returns a valid URLthat can be used to link to it.
<p>
<b>Notes on the Example</b>
<p>
To list the entire site structure you could simply call
<b>ListFolderContents</b> once with path to the web site root at the argument.
<p>
<pre>
<ul>
<% ListFolderContents (Server.MapPath("/")) %>
</ul>
</pre>
<p>
For the example on this page however, only a few subdirectories are used.
Otherwise the display would be several pages long. So separate calls are madefor each subdirectory to be shown.
<p>
<pre>
<ul>
<% ListFolderContents (Server.MapPath("/asp")) %>
<% ListFolderContents (Server.MapPath("/dhtml")) %>
<% ListFolderContents (Server.MapPath("/js")) %>
</ul>
</pre>
<p>
<font color="#cc6600"><b>Source</b></font>
<p>
<ul>
<li><a href="viewsource.asp?source=/asp/dirlist.asp">dirlist.asp</a>
</ul>
<p>
</font>
</td>
</tr>
<tr><td align=center colspan=2>
<hr noshade size=1>
<font face="Arial,Helvetica" size=2><a href="/" target="_top">Home</a></font></td></tr>
</table>
</center>
</body>
</html>
<% sub ListFolderContents(path)
dim fs, folder, file, item, url
set fs = CreateObject("Scripting.FileSystemObject")
set folder = fs.GetFolder(path)
Response.Write("<li><b>" & folder.Name & "</b>" & vbCrLf)
Response.Write("<ul class=""squares"">" & vbCrLf)
'Display sub folders.
for each item in folder.SubFolders
ListFolderContents(item.Path)
next
'Display files.
for each item in folder.Files
url = MapURL(item.path)
Response.Write("<li><a href=""" & url & """>" & item.name & "</a>
" & vbCrLf)
next
Response.Write("</ul>" & vbCrLf)
end sub
function MapURL(path)
dim rootPath, url
'Convert a physical file path to a URL.
rootPath = Server.MapPath("/")
url = Right(path, Len(path) - Len(rootPath))
MapURL = Replace(url, "\", "/")
end function %>
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