count characters

[twcman]

I have a string from a database field that contains the <img src=bla bla bla>. I need to count the number of characters between the start and end tag. I know I need to find the < and then count until the code sees a >. But I cannot come up with the code.

The only dumb questions are the ones that are never asked

 

[tleish]

Use the ReFindNoCase() function. Be sure to set the &quot;returnsubexpressions&quot; parameter to true.

=== START CODE EXAMPLE ===
<cfscript>
string = 'This text is before the image
<img src=&quot;images/test.jpg&quot; width=&quot;10&quot; height=&quot;10&quot;>
...and this text if adter the image';

vCount = ReFindNoCase(&quot;<img

[

^>

]

+>&quot;, string, 1, &quot;True&quot;);
vImg = Mid(string, vCount.pos

[

1

]

, vCount.len

[

1

]

);
</cfscript>

<cfoutput>
[COLOR=000080]<b>[/color]Position:[COLOR=000080]</b>[/color] #vCount.pos

[

1

]

#[COLOR=000080]<br>[/color]
[COLOR=000080]<b>[/color]Length:[COLOR=000080]</b>[/color] #vCount.len

[

1

]

#[COLOR=000080]<br>[/color]
[COLOR=000080]<b>[/color]Source:[COLOR=000080]</b>[/color] #HTMLEditFormat(vImg)#
</cfoutput>
=== END CODE EXAMPLE ===




Cold Fusion Manual

REFindNoCase

Description
Returns the position of the first occurrence of a regular expression in a string starting from a specified position, if the returnsubexpressions parameter is not set to True. Returns 0 if no occurrences are found. The search is case-insensitive.

Returns the position and length of the first occurrence of a regular expression in a string, if the returnsubexpressions parameter is set to True.

Category
String functions

Syntax
REFindNoCase(reg_expression, string [, start ]
[, returnsubexpressions ] )
- tleish

 

[twcman]

Great code. thank you. One question, How do i detect if vCount=0 in cfscript. If it equals 0, i do not want to process the mid function. The only dumb questions are the ones that are never asked