Solved

Displaying Session variables with multiple levels of indirection

Posted on 2007-11-15
6
134 Views
Last Modified: 2013-12-24
I am trying to provide macro-like substitutions for strings from an input file. The input file might have the string "The user is: !user!."

Suppose Session.user = "Steve"

I want to output the string with !user! replaced with the value of "Session.user".

If I use:
       <cfset line = REreplaceNoCase(#line#, '!(.*)!', '#Session.user#')>
       <cfset line = "#line#">

I get "The user is: Steve." That is, this works, but "!xxxxxx!" would be replace with the value of Session.user.

If I use:
       <cfset replaceString = "Session.\1">
       <cfset line = REreplaceNoCase(#line#, '!(.*)!', '#replaceString#')>
       <cfset line = "#line#">
                      <cfoutput>#line#</cfoutput>

I get "The user is: Session.user."

If I use:
       <cfset replaceString = "Session.\1">
       <cfset testReplace = "#replaceString#">
       <cfset line = REreplaceNoCase(#line#, '!(.*)!', '#testReplace#')>
       <cfset line = "#line#">
                      <cfoutput>#line#</cfoutput>

I get "The user is: Session.user."

If I use:
       <cfset replaceString = "Session.\1">
       <cfset testReplace = "###replaceString###">
       <cfset line = REreplaceNoCase(#line#, '!(.*)!', '#testReplace#')>
       <cfset line = "#line#">
                      <cfoutput>#line#</cfoutput>

I get "The user is: #Session.user#."

I need to have two evaluations. Thanks much for any help.
0
Comment
Question by:stevenschulman
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 52

Expert Comment

by:_agx_
ID: 20293013
Perhaps I'm missing something but is there a reason a straight replace wouldn't work?


<cfset theNewLine = replace(line, '!user!', Session.user, "all")>

Open in new window

0
 
LVL 25

Expert Comment

by:James Rodgers
ID: 20298513
>>I want to output the string with !user! replaced with the value of "Session.user".

If I use:
       <cfset line = REreplaceNoCase(#line#, '!(.*)!', '#Session.user#')>
       <cfset line = "#line#">

I get "The user is: Steve." That is, this works, but "!xxxxxx!" would be replace with the value of Session.user.

isn't that what you want? or am i not reading the first line right?
what output are you looking to achieve?
0
 

Author Comment

by:stevenschulman
ID: 20300110
!user! is only an example. If the text were "Hello !firstName! !lastName!" then !firstName! would be substituted with the value of Session.firstName and !lastName! would be substituted with the value of Session.lastName.
0
How our DevOps Teams Maximize Uptime

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us. Read the use case whitepaper.

 
LVL 25

Expert Comment

by:James Rodgers
ID: 20300235
then you should not use a regex but a specific replace
<cfset temp=#replace(line,"!somestring!", #session.somestring#,'all')>
reg ex is for pattern matching you need exact matching

the pattern you are using, !(.*)!',  will match !user!  and !xxxxxx! but it would also match
this sentence ending an an exclamation! and the next sentence ending in an exclamation!
would look like this
this sentence ending an an exclamationSteve
so use exact match replacement
0
 

Author Comment

by:stevenschulman
ID: 20300332
I understand that, but with regular expressions whatever is enclosed in parenthesis is returned and reusable as \n. Thus, in this case, "!(.*)!" matches all characters between two exclamaition points and provides the specific values matched in "\1|. That is why I use "Session.\1". This does, in fact, work. I get the value "Session.user" or "Session.firstName" or "Session.lastName". The problem is that I have the string, but can not seem to go the next step to have it evaluated.

I tried using Evaluate() function. I suspect that the answer lies there somewhere, but I still can not get it to work.
0
 
LVL 25

Accepted Solution

by:
James Rodgers earned 500 total points
ID: 20300405
of then set the replace as #session.\1*

and tehn before pout[utting try this

#de(line)#
0

Featured Post

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Apached AXIS end to end simple good example 2 116
how to enable php7 module in nginx configuration file 8 581
Use System DSN 6 93
New OSQA server has a ton of fake users 4 83
In our day to day coding, how many times have we come across a necessity to check whether a URL is a broken link or not? For those of you that answered countless and are using ColdFusion like myself, then this article is for you.  It will show yo…
Article by: kevp75
Hey folks, 'bout time for me to come around with a little tip. Thanks to IIS 7.5 Extensions and Microsoft (well... really Windows 8, and IIS 8 I guess...), we can now prime our Application Pools, when IIS starts. Now, though it would be nice t…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

737 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question