Variable processing with substr and replace

[axel.hennig]

Hello,

I've got a question regarding processing variable.

Let's assume I've got a file with the name 2018_Wedding_123456.jpg and the 123456 is the OID.

I would like to display the filename without the OID, i.e. without the 123456. Therefore, I was thinking of using the substr function. I've started with

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{File.Name|length} -> 19

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{File.Name|substr:0,19} -> 2018_Wedding_123456
Then I've tried:

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{File.Name|substr:0,{File.Name|length}} -> EMPTY
I don't understand why that does not seem to work.

I came to a solution by doing:

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{File.Name|replace:{File.OID}==}
As I said I found a solution, but still don't understand why my first try does not work.

[Mario]

For the file name COPY.NEF,

{File.Name|length}

returns 4 and

{File.Name|substr:0,{File.Name|length}}

returns

COPY

in VarToy.
Seems to work just fine.

[thrinn]

Mario, I also tried your example. But for me, {File.Name|length} returns 4 as expected, but {File.Name|substr:0,{File.Name|length}} returns an empty string. (Same result as Axel gets).
Maybe something that only works on the newer code base you are using?

[sinus]

Yep, like Thorsten and Axel, the result-line is empty, I get in VarToy:

filename: {File.Name}
filename length: {File.Name|length}
filename substr: {File.Name|substr:0,4}

one } at the end deleted: {File.Name|substr:0,{File.Name|length}
empty: {File.Name|substr:0,{File.Name|length}}

results:

filename: copy
filename length: 4
filename substr: copy

one } at the end deleted: {File.Name|substr:0,4
empty: 

[Mario]

Mario, I also tried your example. But for me, {File.Name|length} returns 4 as expected, but {File.Name|substr:0,{File.Name|length}} returns an empty string. (Same result as Axel gets).
Maybe something that only works on the newer code base you are using?

This is very possible.
I've reworked quite some things in variables for IMatch 2023.
I get

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{File.Name}
{File.Name|length}
{File.Name|substr:0,{File.Name|length}}
{File.Name|substr:5,{File.Name|length}}

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_DSC-1234567890
15
_DSC-1234567890
1234567890[/font][/size][/color][/pre]
Probably the embedded variable parameter length was not processed and evaluated in older versions o the substr function.
It works now, though.

Doing a replace works just as fine in IMatch 2021.

[axel.hennig]

Thanks Thorsten and Markus for checking.