问题

Context

I have a process that envolves creating similar file/filename structures that have inside of it the name of itself, and things like that, i do this every day, and i see that is repetitive and have a pattern, then i got the idea of creating a Sublime Text's Snippet to generate the code for me, adding a significant improvement on my performance.

Example

There is a example of a complete "model" using the structure that i said:

Ext.define('App.model.geral.layouts.Layouts', {
    extend: 'App.ux.model.base',

    fields: [
        { name: 'Foo', type: 'string', fieldLabel: 'Foo' },
        { name: 'Bar', type: 'int', fieldLabel: 'Bar' },
        { name: 'FooTwo', type: 'boolean', fieldLabel: 'FooTwo' },
        { name: 'Date', type: 'date', fieldLabel: 'Date' },
    ],

    proxy: Use.util.Model.getProxy({
        controller: 'Layouts'
    })
});

This is a simple and small sample of a file using mine structure. So that file, following the patterns will be placed at C:/Dev/Com/app/model/geral/layouts/Layouts.js, because models, are inside the folder model and geral is the module that the entity layouts belong to.

What i've tried

I tried various things and the most far i did go was that snippet file:

<snippet>
    <content><![CDATA[
Ext.define('App.model.${TM_FILEPATH/.+(?:model\/)(.+)\.\w+/\l$1/}', {
    extend: '',

    fields: [ ],

    proxy: '' 
});
]]></content>
    <tabTrigger>mitem</tabTrigger>
</snippet>

When i trigger that snippet on a empty file named and located in: C:/Dev/Com/app/model/geral/layouts/Layouts.js (as the pattern), it results:

Ext.define('App.model.geral/layouts/Layouts', {
    extend: '',

    fields: [ ],

    proxy: '' 
});

As you can see, i got 'App.model.geral/layouts/Layouts' instead of 'App.model.geral.layouts.Layouts' that is what i want. I am close to the final result that i want, as you can see on the complete model example, by the way i cannot go far than that, i dont have any knowledge of RegExp what i did was only researching and trying different things.

If helpful, there is a more complete info about Sublime Snippets that i found is:

$PARAM1 .. $PARAMn  Arguments passed to the insert_snippet command. (Not covered here.)
$SELECTION  The text that was selected when the snippet was triggered.
$TM_CURRENT_LINE    Content of the cursor’s line when the snippet was triggered.
$TM_CURRENT_WORD    Word under the cursor when the snippet was triggered.
$TM_FILENAME    Name of the file being edited, including extension.
$TM_FILEPATH    Path to the file being edited.
$TM_FULLNAME    User’s user name.
$TM_LINE_INDEX  Column where the snippet is being inserted, 0 based.
$TM_LINE_NUMBER Row where the snippet is being inserted, 1 based.
$TM_SELECTED_TEXT   An alias for $SELECTION.
$TM_SOFT_TABS   YES if translate_tabs_to_spaces is true, otherwise NO.
$TM_TAB_SIZE    Spaces per-tab (controlled by the tab_size option).

I used that info to get the filepath, i tried using another variables like filename but did not get that far.

That will be very useful if someone can help me to get to the final result.

回答1:

You can achieve what you want with the following:

<snippet>
    <content><![CDATA[
Ext.define('App.model.${TM_FILEPATH/(^.+\/model\/)|(\w+)|(\.\w+$)|(\/)/(?2$2)(?4.)/g}', {
    extend: '',

    fields: [ ],

    proxy: '' 
});
]]></content>
    <tabTrigger>mitem</tabTrigger>
</snippet>

Btw, I highly recommend installing the PackageDev package if you haven't already, to get some syntax highlighting on the snippet and regular expression/replacement.

How it works:

Match:

(^.+\/model\/) match from the beginning of the file path up to and including /model/, and store in capture group 1
| or
(\w+) match any sequence of word characters and store in capture group 2
| or
(\.\w+$) match the file extension and store in capture group 3
| or
(\/) match a / and store in capture group 4

Replacement:

(?2$2) if capture group 2 participated in the match, replace it with itself - i.e. keep it
(?4.) if capture group 4 participated in the match, replace it with a dot

Flags:

g global modifier to match as many times as possible

Arguably you don't need the capture groups 1 and 3, but I included them to make it easier to tell what is being matched.

来源：https://stackoverflow.com/questions/46689883/creating-a-specific-sublime-texts-snippet-using-regular-expressions

标签

regex

extjs

sublimetext3

Creating a specific Sublime Text's snippet, using Regular Expressions

问题