GetMetaHeaders(str)
Last updated May 02, 2007
author
Version: 4 | Requires: CF5 | Library: StrLib
Description:
This UDF will parse an HTML string (normally returned from CFFILE) and return an array containing information about all meta tags. Each element of the array is a structure. Each structure will contain either a name or "http-equiv" key. The value is the name or http-equiv entry. Each structure will contain a content key as well. This contains the content for the meta tag.
Return Values:
Returns an array.
Example:
<CFOUTPUT>
<CFSAVECONTENT VARIABLE="Page">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>Home</title>
<META NAME='Keywords' CONTENT='Goober'>
<META NAME="description" CONTENT="">
<META NAME="abstract" CONTENT="">
<META HTTP-EQUIV="Content-Language" CONTENT="EN">
<META NAME="author" CONTENT="foo@foo.com">
<META NAME="distribution" CONTENT="Global">
<META NAME="revisit-after" CONTENT="30 days">
<META NAME="copyright" CONTENT="FOO Corporation">
<META NAME="robots" CONTENT="FOLLOW,INDEX">
<LINK REL="STYLESHEET" TYPE="text/css" HREF="includes/foo.css">
</HEAD>
<BODY>
Stuff.
</BODY>
</HTML>
</CFSAVECONTENT>
</CFOUTPUT>
<CFSET res = GetMetaHeaders(Page)>
<CFDUMP var="#res#">
Parameters:
| Name | Description | Required |
|---|---|---|
| str | The string to check. | Yes |
Full UDF Source:
/**
* Parses an HTML string and returns META tag information.
* Regex fix for names with spaces by Johan Steenkamp (johan@orbital.co.nz).
* Fix for self closing tags.
*
* @param str The string to check. (Required)
* @return Returns an array.
* @author Raymond Camden (ray@camdenfamily.com)
* @version 4, May 2, 2007
*/
function GetMetaHeaders(str) {
var matchStruct = structNew();
var name = "";
var content = "";
var results = arrayNew(1);
var pos = 1;
var regex = "<meta[[:space:]]*(name|http-equiv)[[:space:]]*=[[:space:]]*(""|')([^""]*)(""|')[[:space:]]*content=(""|')([^""]*)(""|')[[:space:]]*/{0,1}>";
matchStruct = REFindNoCase(regex,str,pos,1);
while(matchStruct.pos[1]) {
results[arrayLen(results)+1] = structNew();
results[arrayLen(results)][ Mid(str,matchStruct.pos[2],matchStruct.len[2])] = Mid(str,matchStruct.pos[4],matchStruct.len[4]);
results[arrayLen(results)].content = Mid(str,matchStruct.pos[7],matchStruct.len[7]);
pos = matchStruct.pos[6] + matchStruct.len[6] + 1;
matchStruct = REFindNoCase(regex,str,pos,1);
}
return results;
}
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