first commit

README.md

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+# deepl.vim
+
+## Demo
+
+## Configuration
+```vim
+let g:deepl#endpoint = "https://api-free.deepl.com/v2/translate"
+let g:deepl#auth_key = "00000000-0000-0000-0000-000000000000:fx"
+vmap t<C-e> <Cmd>call deepl#v("EN")<CR>
+vmap t<C-j> <Cmd>call deepl#v("JA")<CR>
+```

autoload/deepl.vim

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+" Send a translation request to deepl using curl
+function! deepl#translate(input, lang)
+  let cmd = "curl -sS ".g:deepl#endpoint
+  let cmd = cmd.' -d "auth_key='.g:deepl#auth_key.'"'
+  let cmd = cmd.' -d "text='.a:input.'"'
+  let cmd = cmd.' -d "target_lang='.a:lang.'"'
+
+  try
+    const res = json_decode(system(cmd))
+    return res["translations"][0]["text"]
+
+  catch /.*/
+    echoerr "error: " . v:exception
+  endtry
+endfunction
+
+
+" Replace visual selection
+" ref: https://github.com/christianrondeau/vim-base64/blob/d15253105f6a329cd0632bf9dcbf2591fb5944b8/autoload/base64.vim#L29
+function! deepl#v(lang)
+	" Preserve line breaks
+	let l:paste = &paste
+	set paste
+	" Reselect the visual mode text
+	normal! gv
+	" Apply transformation to the text
+	execute "normal! c\<c-r>=deepl#translate(@\", '".a:lang."')\<cr>\<esc>"
+	" Select the new text
+	normal! `[v`]h
+	" Revert to previous mode
+	let &paste = l:paste
+endfunction