Moving formating ultils to buffer module

- moving formating utils to buffer module to make it easier to interact
and test

2 files changed, 33 insertions, 32 deletions

diff --git a/autoload/prettier.vim b/autoload/prettier.vim
index c1aa35b..b4cc7d7 100644
--- a/autoload/prettier.vim
+++ b/autoload/prettier.vim
@@ -151,11 +151,11 @@ function! s:Prettier_Exec_Sync(cmd, startSelection, endSelection) abort
     return
   endif
 
-  if (s:Has_Content_Changed(l:out, a:startSelection, a:endSelection) == 0)
+  if (prettier#utils#buffer#willUpdatedLinesChangeBuffer(l:out, a:startSelection, a:endSelection) == 0)
     return
   endif
 
-  call s:Apply_Prettier_Format(l:out, a:startSelection, a:endSelection)
+  call prettier#utils#buffer#replace(l:out, a:startSelection, a:endSelection)
 endfunction
 
 function! s:Prettier_Exec_Async(cmd, startSelection, endSelection) abort
@@ -189,7 +189,7 @@ function! s:Prettier_Job_Close(channel, startSelection, endSelection, bufferName
   endwhile
 
   " nothing to update
-  if (s:Has_Content_Changed(l:out, a:startSelection, a:endSelection) == 0)
+  if (prettier#utils#buffer#willUpdatedLinesChangeBuffer(l:out, a:startSelection, a:endSelection) == 0)
     let s:prettier_job_running = 0
     return
   endif
@@ -222,7 +222,7 @@ function! s:Prettier_Job_Close(channel, startSelection, endSelection, bufferName
 endfunction
 
 function! s:Prettier_Format_And_Save(lines, start, end) abort
-  call s:Apply_Prettier_Format(a:lines, a:start, a:end)
+  call prettier#utils#buffer#replace(a:lines, a:start, a:end)
   write
 endfunction
 
@@ -231,34 +231,6 @@ function! s:Prettier_Job_Error(msg) abort
     let s:prettier_job_running = 0
 endfunction
 
-function! s:Has_Content_Changed(content, startLine, endLine) abort
-  return getbufline(bufnr('%'), 1, line('$')) == s:Get_New_Buffer(a:content, a:startLine, a:endLine) ? 0 : 1
-endfunction
-
-function! s:Get_New_Buffer(lines, start, end) abort
-  return getbufline(bufnr('%'), 1, a:start - 1) + a:lines + getbufline(bufnr('%'), a:end + 1, '$')
-endfunction
-
-function! s:Apply_Prettier_Format(lines, startSelection, endSelection) abort
-  " store view
-  let l:winview = winsaveview()
-  let l:newBuffer = s:Get_New_Buffer(a:lines, a:startSelection, a:endSelection)
-
-  " we should not replace contents if the newBuffer is empty
-  if empty(l:newBuffer)
-    return
-  endif
-
-  " delete all lines on the current buffer
-  silent! execute len(l:newBuffer) . ',' . line('$') . 'delete _'
-
-  " replace all lines from the current buffer with output from prettier
-  call setline(1, l:newBuffer)
-
-  " Restore view
-  call winrestview(l:winview)
-endfunction
-
 function! s:Prettier_Parse_Error(errors) abort
   call prettier#logging#error#log('PARSING_ERROR')
   if g:prettier#quickfix_enabled && prettier#bridge#parser#onError(a:errors)
diff --git a/autoload/prettier/utils/buffer.vim b/autoload/prettier/utils/buffer.vim
new file mode 100644
index 0000000..06fd7ff
--- /dev/null
+++ b/autoload/prettier/utils/buffer.vim
@@ -0,0 +1,29 @@
+function! prettier#utils#buffer#replace(lines, startSelection, endSelection) abort
+  " store view
+  let l:winview = winsaveview()
+  let l:newBuffer = prettier#utils#buffer#createBufferFromUpdatedLines(a:lines, a:startSelection, a:endSelection)
+
+  " we should not replace contents if the newBuffer is empty
+  if empty(l:newBuffer)
+    return
+  endif
+
+  " delete all lines on the current buffer
+  silent! execute len(l:newBuffer) . ',' . line('$') . 'delete _'
+
+  " replace all lines from the current buffer with output from prettier
+  call setline(1, l:newBuffer)
+
+  " Restore view
+  call winrestview(l:winview)
+endfunction
+
+" Returns 1 if content has changed
+function! prettier#utils#buffer#willUpdatedLinesChangeBuffer(lines, start, end) abort
+  return getbufline(bufnr('%'), 1, line('$')) == prettier#utils#buffer#createBufferFromUpdatedLines(a:lines, a:start, a:end) ? 0 : 1
+endfunction
+
+" Returns a new buffer with lines replacing start and end of the contents of the current buffer
+function! prettier#utils#buffer#createBufferFromUpdatedLines(lines, start, end) abort
+  return getbufline(bufnr('%'), 1, a:start - 1) + a:lines + getbufline(bufnr('%'), a:end + 1, '$')
+endfunction