Trim Characters Functionality

Lam

January 03, 2019 11:35

Hi,

I would like to ask what is the best way to trim characters in IB? For example, with string "1234-456789", I only want to look the first 4 characters, how would I trim that out? I saw <stringModify>, but I don't see it has something like this?

Comments

8 comments

michiel

January 08, 2019 15:33

You could use <setInstallerVariableFromRegex> to trim the first four characters:

 <setInstallerVariableFromRegEx>
   <name>trimmed</name>
   <text>1234-56789</text> 
   <pattern>"^(....).*</pattern>
   <substitution\1<substitution/>
 </setInstallerVariableFromRegEx>

Lam

January 09, 2019 13:11

Thanks, I was able to get it using something like this this:

<setInstallerVariableFromRegEx>
    <name>value1</name>
    <pattern>^(.*?)-(.*?)$</pattern>
    <substitution>\1</substitution>
    <text>${value}</text>
  </setInstallerVariableFromRegEx>

BitRock support

January 11, 2019 16:53
It's great to hear you found a solution.
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Lam

August 01, 2019 13:40
Hello,
Related to this optic, can you help me how I trim the first 6 or 7 char?

For example, if I want the first 7 char of "1234-5678-9012", which is "1234-56:. What would be the pattern and substitution logic? I've tried a few (like below) without success.
```
<pattern>^[0-9]{0,6}$</pattern>
```
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michiel

August 01, 2019 16:44

Can you try this pattern?

<setInstallerVariableFromRegEx>
    <name>value1</name>
    <pattern>^[0-9-]{0,7}</pattern>
    <substitution>\1</substitution>
    <text></text>
  </setInstallerVariableFromRegEx>

Tam Bui

August 02, 2019 11:58
Hi,

I've tried that, but I got the last 7 digit instead of the first 7.

Whole Narrow: 7746-1810-8801

Info: Narrow: 10-8801
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michiel

August 02, 2019 16:03

Hi Tam,

Sorry, I misunderstood your question. Could you try this instead:

<setInstallerVariableFromRegEx>
    <name>value1</name>
    <pattern>^([0-9-]{0,7}).*$</pattern>
    <substitution>\1</substitution>
    <text></text>
  </setInstallerVariableFromRegEx>

Lam

August 02, 2019 18:27
Thanks! this works for me.
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