How can I select a part of TM_DIRECTORY variable? - visual-studio-code

Question

I want to select a part of the TM_DIRECTORY variable on VScode snippet. I mean I want to select Tests\Setup of the d:\Projects\Hakhsin\hakhsin\tests\Setup in code-snippet file. Look at this:
// On snippet file
"PHP Class": {
"scope": "",
"prefix": ["phpClass"],
"body": [
"<?php\n\nnamespace ${TM_DIRECTORY/(?<=(?:[\w:\\]hakhsin\\)).+(?=\\)//};\n\nclass ${TM_FILENAME_BASE} {\n\t$2\n}"
],
"description": "New PHP Class"
},
And I want to get this result:
namespace Tests\Setup;
class StorageFactory {
}
But I get this result:
<?php
namespace d:\Projects\Hakhsin\hakhsin\tests\Setup;
class StorageFactory {
}

Answer 1

It doesn't appear you can use variables inside of other variables in a snippet transform.
You can try this code which is more "dynamic" than yours but not perfect:
"${TM_DIRECTORY/([^\\\\]*\\\\){4}(.*)/${2:/capitalize}/}",
The {4} in that is if you have 4 segments in the directory structure before the part you want, like d:\Projects\Hakhsin\hakhsin\tests\Setup The segments are d:\, Projects\, Hakhsin\ and hakhsin\. If that number of segments is known and stable than the snippet I showed works well.
I doubt the number of those segments would vary within a project but might very well between projects - you would just have to change the {x} item for each project if so.

Answer 2

I solved it but it is not dynamic.
namespace ${TM_DIRECTORY/(.*hakhsin\\\\)(.*)/${2:/capitalize}/};
Is there a better way? anything like this:
namespace ${TM_DIRECTORY/(.*${WORKSPACE_NAME}\\\\)(.*)/${2:/capitalize}/};
This is the result:
<?php
namespace Tests\Setup;
class StorageFactory {
}