Working v1.0.0

README.md

@@ -5,9 +5,20 @@ IncrementalFileBackup.nvim
 
 A Vim/Neovim plugin to backup files incrementally before every save.
 
+## Installation
+
+This plugin can be installed with a varity of plugin managers, e.g.,
+[vim-plug](https://github.com/junegunn/vim-plug):
+
+```
+Plug 'https://git.superevilmegaco.com/Neovim/IncrementalFileBackup.nvim'
+```
+
 ## Usage
 
 `:IncrementalFileBackupEnable` to enable file backup.
 
 `:IncrementalFileBackupDisable` to disable file backup.
 
+Backups are written to the `~/.IncrementalFileBackup.nvim/` directory.
+

plugin/IncrementalFileBackup.vim

@@ -5,13 +5,40 @@ let g:loaded_IncrementalFileBackup = 1
 
 let s:PluginName = "IncrementalFileBackup.nvim"
 let s:isVerbose = 0
+let s:backupDir = "~/.IncrementalFileBackup.nvim"
+
+function! IncrementalFileBackup#Backup()
+        let bex = '-' . strftime("%Y%m%d-%k%M%S")
+        let filepath = expand('%:p')
+        let dirpath = expand('%:p:h')
+        let backupDirPath = s:backupDir .  dirpath
+        let backupFilePath = s:backupDir .  filepath . bex
+        let cmd = "!mkdir -p ". backupDirPath . " && cp " . filepath . " " . backupFilePath
+        silent execute cmd
+        echom "IncrementalFileBackup: Backup written to ". backupFilePath
+endfunction
+
+function! s:RegisterAutoCommandOnBufWrite(enable)
+        if a:enable == 1
+                augroup AutoIncrementalFileBackupOnBufWriteAugroup
+                        autocmd!
+                        autocmd! BufWritePre * :call IncrementalFileBackup#Backup()
+                augroup END
+        else
+                augroup AutoIncrementalFileBackupOnBufWriteAugroup
+                        autocmd!
+                augroup END
+        endif
+endfunction
+
 
 function! IncrementalFileBackup#Enable()
-        let &bex = '-' . strftime("%Y%m%d%H%M%S") . '~'
-        :au BufWritePre * let &bex = '-' . strftime("%Y%b%d%X") . '~' 
+        silent! "!mkdir -p " . s:backupDir
+        call s:RegisterAutoCommandOnBufWrite(1)
 endfunction
 
 function! IncrementalFileBackup#Disable()
+        call s:RegisterAutoCommandOnBufWrite(0)
 endfunction
 
 command! IncrementalFileBackupEnable call IncrementalFileBackup#Enable()