Vim Plug Autoload - Jonathan Hamberg

This post is about how to write some vim-script to autoload the plugin manager from the .vimrc. This makes the process of getting up and running on a new system easier because the plugin manager is automatically downloaded as well as the plugins are also automatically downloaded.

Using the commands from https://github.com/junegunn/vim-plug I was able to create a script to auto download VimPlug for vim and NeoVim on windows and on Linux.

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" Expand the home directory to an absolute path.
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let homeDir = expand('~')
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" Find the desired VimPlug install location for different system configurations.
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if(has('win32') || has('win64'))
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    if has('nvim')
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        let shareDir=homeDir.'\AppData\Local\nvim'
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        let plugVim=shareDir.'\autoload\plug.vim'
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    else
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        let shareDir=homeDir.'\vimfiles'
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        let plugVim=shareDir.'\autoload\plug.vim'
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    endif
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else
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    if has('nvim')
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        let shareDir=homeDir.'/.local/share/nvim/site'
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        let plugVim=shareDir.'/autoload/plug.vim'
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    else
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        let shareDir=homeDir.'/.vim'
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        let plugVim=shareDir.'/autoload/plug.vim'
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    endif
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endif
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" Url of the VimPlug script.
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let plugUri = 'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
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if empty(glob(expand(plugVim)))
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    if has('win32') || has('win64')
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      " Make sure the autoload directory has been created.
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        exec '!md '.shareDir.'\autoload'
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        " Download VimPlug using PowerSHell.
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        exec '!powershell -command Invoke-WebRequest -Uri "'.plugUri.'" -OutFile '.plugVim.'"'
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    else
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        " Download VimPlug using curl.
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        exec '!curl -fLo '.plugVim.' --create-dirs '.plugUri
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    endif
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  # Automatically run PlugInstall command.
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    autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
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endif