feat(integration): General vim input helper (#38)

* feat(integration): General vim input helper

* refactor(integration): Refactor vim plugin

src/sphinxnotes/snippet/integration/binding.nvim

@@ -8,10 +8,10 @@
 " TODO: Support vim?
 
 function! g:SphinxNotesSnippetListAndView()
-  function! s:CallView(selection)
-    call g:SphinxNotesSnippetView(s:SplitID(a:selection))
+  function! ListAndView_CB(id)
+    call g:SphinxNotesSnippetView(a:id)
   endfunction
-  call g:SphinxNotesSnippetList(function('s:CallView'), '*')
+  call g:SphinxNotesSnippetList('"*"', function('ListAndView_CB'))
 endfunction
 
 " https://github.com/anhmv/vim-float-window/blob/master/plugin/float-window.vim

src/sphinxnotes/snippet/integration/binding.vim

@@ -6,9 +6,9 @@
 " :Version: 20211114
 "
 
-function! g:SphinxNotesSnippetEdit(id)
-  let file = system(join([s:snippet, 'get', '--file', a:id, '2>/dev/null'], ' '))
-  let line = system(join([s:snippet, 'get', '--line-start', a:id, '2>/dev/null'], ' '))
+function g:SphinxNotesSnippetEdit(id)
+  let file = g:SphinxNotesSnippetGet(a:id, 'file')[0]
+  let line = g:SphinxNotesSnippetGet(a:id, 'line-start')[0]
   if &modified
     execute 'vsplit ' . file
   else
@@ -17,48 +17,29 @@ function! g:SphinxNotesSnippetEdit(id)
   execute line
 endfunction
 
-function! g:SphinxNotesSnippetListAndEdit()
-  function! s:CallEdit(selection)
-    call g:SphinxNotesSnippetEdit(s:SplitID(a:selection))
+function g:SphinxNotesSnippetListAndEdit()
+  function! ListAndEdit_CB(id)
+    call g:SphinxNotesSnippetEdit(a:id)
   endfunction
-  call g:SphinxNotesSnippetList(function('s:CallEdit'), 'ds')
+  call g:SphinxNotesSnippetList('ds', function('ListAndEdit_CB'))
 endfunction
 
-function! g:SphinxNotesSnippetUrl(id)
-  let url_list = systemlist(join([s:snippet, 'get', '--url', a:id, '2>/dev/null'], ' '))
+function g:SphinxNotesSnippetUrl(id)
+  let url_list = g:SphinxNotesSnippetGet(a:id, 'url')
   for url in url_list
     echo system('xdg-open ' . shellescape(url))
   endfor
 endfunction
 
-function! g:SphinxNotesSnippetListAndUrl()
-  function! s:CallUrl(selection)
-    call g:SphinxNotesSnippetUrl(s:SplitID(a:selection))
+function g:SphinxNotesSnippetListAndUrl()
+  function! ListAndUrl_CB(id)
+    call g:SphinxNotesSnippetUrl(a:id)
   endfunction
-  call g:SphinxNotesSnippetList(function('s:CallUrl'), 'ds')
-endfunction
-
-function! g:SphinxNotesSnippetInput(id, item)
-  let content = system(join([s:snippet, 'get', '--' . a:item, a:id, '2>/dev/null'], ' '))
-  let content = substitute(content, '\n\+$', '', '') " skip trailing \n
-  if a:item == 'docname' 
-    " Create doc reference.
-    let content = ':doc:`/' . content . '`'
-  endif
-  execute 'normal! i' . content
-endfunction
-
-function! g:SphinxNotesSnippetListAndInputDocname()
-  function! s:InputDocname(selection)
-    call g:SphinxNotesSnippetInput(s:SplitID(a:selection), 'docname')
-  endfunction
-  call g:SphinxNotesSnippetList(function('s:InputDocname'), 'd')
+  call g:SphinxNotesSnippetList('ds', function('ListAndUrl_CB'))
 endfunction
 
 nmap <C-k>e :call g:SphinxNotesSnippetListAndEdit()<CR>
 nmap <C-k>u :call g:SphinxNotesSnippetListAndUrl()<CR>
-nmap <C-k>d :call g:SphinxNotesSnippetListAndInputDocname()<CR>
-" FIXME: can't return to insert mode even use a/startinsert!/C-o
-imap <C-k>d <C-o>:call g:SphinxNotesSnippetListAndInputDocname()<CR>
+nmap <C-k>i :call g:SphinxNotesSnippetListAndInput()<CR>
 
 " vim: set shiftwidth=2:

src/sphinxnotes/snippet/integration/plugin.vim

@@ -8,25 +8,102 @@
 " NOTE: junegunn/fzf.vim is required
 
 let s:snippet = 'snippet'
+let s:width = 0.9
+let s:height = 0.6
 
-function! s:SplitID(row)
-  return split(a:row, ' ')[0]
-endfunction
-
-" TODO: extra opts
-function! g:SphinxNotesSnippetList(callback, tags)
-  let l:width = 0.9
+" Use fzf to list all snippets, callback with argument id.
+function g:SphinxNotesSnippetList(tags, callback)
   let cmd = [s:snippet, 'list',
         \ '--tags', a:tags,
-        \ '--width', float2nr(&columns * l:width) - 2,
+        \ '--width', float2nr(&columns * s:width) - 2,
         \ ]
+
+  " Use closure keyword so that inner function can access outer one's
+  " localvars (l:) and arguments (a:).
+  " https://vi.stackexchange.com/a/21807
+  function! List_CB(selection) closure
+      let id = split(a:selection, ' ')[0]
+      call a:callback(id)
+  endfunction
+
   " https://github.com/junegunn/fzf/blob/master/README-VIM.md#fzfrun
   call fzf#run({
         \ 'source': join(cmd, ' '),
-        \ 'sink': a:callback,
+        \ 'sink': function('List_CB'),
         \ 'options': ['--with-nth', '2..', '--no-hscroll', '--header-lines', '1'],
-        \ 'window': {'width': l:width, 'height': 0.6},
+        \ 'window': {'width': s:width, 'height': s:height},
         \ })
 endfunction
 
-" vim: set shiftwidth=2:
+" Return the attribute value of specific snippet.
+function g:SphinxNotesSnippetGet(id, attr)
+    let cmd = [s:snippet, 'get', a:id, '--' . a:attr]
+    return systemlist(join(cmd, ' '))
+endfunction
+
+" Use fzf to list all attr of specific snippet,
+" callback with arguments (attr_name, attr_value).
+function g:SphinxNotesSnippetListSnippetAttrs(id, callback)
+    " Display attr -> Identify attr (also used as CLI option)
+    let attrs = {
+                \ 'Source':             'src',
+                \ 'URL':                'url',
+                \ 'Docname':            'docname',
+                \ 'Dependent files':    'deps',
+                \ 'Text':               'text',
+                \ 'Title':              'title',
+                \ }
+    let delim = '  '
+    let table = ['OPTION' . delim . 'ATTRIBUTE']
+    for name in keys(attrs)
+        call add(table, attrs[name] . delim . name)
+    endfor
+
+    function! ListSnippetAttrs_CB(selection) closure
+        let opt = split(a:selection, ' ')[0]
+        let val = g:SphinxNotesSnippetGet(a:id, opt)
+        call a:callback(opt, val) " finally call user's cb
+    endfunction
+
+    let preview_cmd = [s:snippet, 'get', a:id, '--$(echo {} | cut -d " " -f1)']
+    let info_cmd = ['echo', 'Index ID:', a:id]
+    call fzf#run({
+                \ 'source': table,
+                \ 'sink': function('ListSnippetAttrs_CB'),
+                \ 'options': [
+                \               '--header-lines', '1',
+                \               '--with-nth', '2..',
+                \               '--preview', join(preview_cmd, ' '),
+                \               '--preview-window', ',wrap',
+                \               '--info-command', join(info_cmd, ' '),
+                \            ],
+                \ 'window': {'width': s:width, 'height': s:height},
+                \ })
+endfunction
+
+function g:SphinxNotesSnippetInput(id)
+  function! Input_CB(attr, val) " TODO: became g:func.
+    if a:attr == 'docname' 
+      " Create doc reference.
+      let content = ':doc:`/' . a:val[0] . '`'
+    elseif a:attr == 'title'
+      " Create local section reference.
+      let content = '`' . a:val[0] . '`_'
+    else
+      let content = join(a:val, '<CR>')
+    endif
+    execute 'normal! i' . content
+  endfunction
+
+  call g:SphinxNotesSnippetListSnippetAttrs(a:id, function('Input_CB'))
+endfunction
+
+function g:SphinxNotesSnippetListAndInput()
+  function! ListAndInput_CB(id)
+    call g:SphinxNotesSnippetInput(a:id)
+  endfunction
+
+  call g:SphinxNotesSnippetList('"*"', function('ListAndInput_CB'))
+endfunction
+
+  " vim: set shiftwidth=2: