Vison is a Vim plugin to help writing *.json file with JSON Schema.

Vison provides the following features:

• Completion keys or values in JSON files
• You can use more than 40 schema files provided JSON Schema Store.
• Manegement JSON schema files.

Vison requires the following:

• git command

And, installation of the following Vim plugin is recommended:

• Shougo/unite.vim

If you use NeoBundle for Vim plugins management, append the following to your .vimrc:

NeoBundle 'Shougo/unite.vim'
NeoBundle 'Quramy/vison'

And exec :NeoBundleInstall.

After installation, execute :VisonSetup command. So, vison fetches schema file from JSON Schema Store. You don't need exec this command at the next Vim launch.

To use omni-completion, you can call the :Vison command on the current buffer.

For example, writing package.json(NPM configuration file) call :Vison package.json

If your current buffer's basename is equal to the schema name, you can ommit the argument of this command.

Once a schema file is applied, you can complete keys or values in the current buffer with omni-completion(type <Ctrl-x><Ctrl-o>).

You can also configure your .vimrc for auto applying schema with autocmd. For example:

autocmd BufRead,BufNewFile package.json Vison
autocmd BufRead,BufNewFile .bowerrc Vison bowerrc.json

If you have installed Unite, you can get a list of stored schema using :Unite vison.

And select a candidate, the selected schema apply to the current buffer.

Open some JSON schema file in Vim and exec :VisonRegisterSchema. Then, the schema file is registered into the vison.

By the default, the schema file is copied into the ~/.cache/vison/default directory.

This command regards the basename of the current buffer as the schema name. If the basename is package.json then the schema name is also package.json.

To set schema name explicitly, call this command with the argument.

For example :VisonRegisterSchema npm-package.

You can configure completion with the completeopt option.

If you don't want the popup menu:

autocmd FileType json setlocal completeopt-=menu

If you want to show more informations in the preview window when completion:

autocmd FileType json setlocal completeopt+=menu,preview

T.B.D.

If you want more details, please see doc/vison.txt.

MIT