telescope-switch.nvim

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telescope-switch.nvim

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A telescope plug helps you switch between files.

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# telescope-switch.nvim
> A [telescope](https://github.com/nvim-telescope/telescope.nvim) extension that helps you to switch between files.

- [telescope-switch.nvim](#telescope-switchnvim)
  * [Demo](#demo)
  * [Usage](#usage)
  * [Install](#install)
  * [Setup](#setup)
  * [Configuration QA](#configuration-qa)
    + [A. Matcher](#a-matcher)
    + [B. Picker](#b-picker)
  * [Share your matcher](#share-your-matcher)
  * [Alternatives](#alternatives)

## Demo
![demo](https://github.com/sshelll/assets/blob/master/telescope-switch.nvim/demo1.png)

![demo2](https://github.com/sshelll/assets/blob/master/telescope-switch.nvim/demo2.png)

## Usage
1. With command  
   `:Telescope switch`
3. With lua  
   `require("telescope").extensions.switch.switch()`

## Install

```lua
{
    'sshelll/telescope-switch.nvim',
    dependencies = { 'nvim-telescope/telescope.nvim' },
    lazy = true,
},
```

## Setup

```lua
require('telescope').setup {
    defaults = {
        -- ...
    },
    pickers = {
        -- ...
    },
    -- config telescope-switch here ⬇️
    extensions = {
        switch  = {
            matchers = {
                {
                    name = 'go test',
                    from = '(.*).go$',
                    to = '%1_test.go'
                    ignore_by = { 'go impl' }, -- ignore this matcher if 'go impl' matches any files
                },
                {
                    name = 'go impl',
                    from = '(.*)_test.go$',
                    to = '%1.go'
                },
                {
                    name = "plugin config",
                    from = "/lua/plugins.lua$",
                    to = "/lua/plugin-config/*.lua", -- this is overriden by 'search'
                    search = "/lua/plugin-config"    -- this works
                },
                {
                    name = "plugin list",
                    from = "/lua/plugin%-config/.*.lua$",
                    to = "/lua/plugins.lua",
                },
                {
                    name = "rust test",
                    from = "/src/(.*).rs$",
                    to = "/tests/*.rs",
                },
            },
           picker = {
                seperator = "⇒",
                layout_strategy = 'horizontal', -- telescope layout_strategy
                layout_config = {               -- telescope layout_config
                    width = 0.5,
                    height = 0.4,
                    preview_width = 0.6,
                },
                preview = true,                 -- set to false to disable telescope preview
            }
        }
    }
}

require('telescope').load_extension('switch')
```

## Configuration QA

### A. Matcher

**1. From && To**

Basically I use `${current_file_path}:gsub(from, to)` in lua to get the `target pattern`, so if you have any doubts about it, you can try to run this line of code in your lua REPL to test.

After getting the `target pattern`, I'll call `find ${target_pattern} -type f -maxdepth 0` to list all existed matched files, that's why you can use both of `*.go` and `%1.go` in `to` field.

Here is one simple tip:

if you have `( ) . % + - * ? [ ^ $` in `from` field, please add `%` to escape them.

---

**2. Ignore By**

An array of `matcher.name` that you want to check.
If any of them matches any files, then the current matcher will be ignored.

---

**3. Search**

<u>If `search` was set, then `to` will be ignored.</u>

`search` is used to find all files with the given path, and this path <u>should start with the 2nd level of</u> `vim.fn.getcwd()`.

For example:

```sh
.
├── go.mod
├── go.sum
├── .gitignore
├── ast
│   ├── parse.go
│   └── parse_test.go
└── util
    ├── math.go
    └── math_test.go

```

If you want to jump from `./ast/xx.go` to `./util/xx.go`, then config like this:

```lua
{
    name = "ast to util",
    from = "/ast/(.*).go$",
    search = "/util"
}
```

Why search? Because sometimes we don't have a common rule to jump!

---

**4. Builtin Matchers**

See `lua/telescope/_extensions/switch/matcher.lua` for more detail.

You can use `require('telescope._extensions.switch.matcher').go_test` to use the builtin matcher:

```lua
switch  = {
    matchers = {
        require('telescope._extensions.switch.matcher').go_test,
        require('telescope._extensions.switch.matcher').go_impl,
        {
            name = "rust test",
            from = "/src/(.*).rs$",
            search = "/tests",
        },
    },
}
```

Different matchers should have different `name + from + to + search`, otherwise it'll be filtered.

### B. Picker

See [telescope.nvim](https://github.com/nvim-telescope/telescope.nvim) for more detail.

## Share your matcher

If you have any great ideas about some common and useful matchers, please open a PR~~

## Alternatives
Inspired by [other.nvim](https://github.com/rgroli/other.nvim)

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