phrase images from webpage coldfusion

Question

i need to get images from a webpage source.

i can use cfhttp method get and use htmleditformat() to read the html from that page, now i need to loop through the content to get all image url's(src)

can i use rematch() or refind() etc... and if yes how??

please help!!!!!

if im not clear i can try to clarify..

Answer 1

It can be very difficult to reliably parse html with regex.

Answer 2

Here's a function that will probably trip up on a lot of bad cases, but might work if you just need something quick and dirty.

<cffunction name="getSrcAttributes" access="public" output="No">
    <cfargument name="pageContents" required="Yes" type="string" default="" />

    <cfset var continueSearch = true />
    <cfset var cursor = "" />
    <cfset var startPos = 0 />
    <cfset var finalPos = 0 />
    <cfset var images = ArrayNew(1) />

    <cfloop condition="continueSearch eq true">
        <cfset cursor = REFindNoCase("src\=?[\""\']", arguments.pageContents, startPos, true) />

        <cfif cursor.pos[1] neq 0>
            <cfset startPos = (cursor.pos[1] + cursor.len[1]) />
            <cfset finalPos = REFindNoCase("[\""\'\s]", arguments.pageContents, startPos) />
            <cfset imgSrc = Mid(arguments.pageContents, startPos, finalPos - startPos) />

            <cfset ArrayAppend(images, imgSrc) />
        <cfelse>
            <cfset continueSearch = false />
        </cfif>
    </cfloop>

    <cfreturn images>
</cffunction>

Note: I can't verify at the moment that this code works.

Answer 3

Use a browser and jQuery to 'query' out all the img tag from the DOM might be easier...