Tabify is a Sublime Text 3 plugin for reading tab-delimited files. Open your tab-delimited file and run Tabify via the Command Palette.
Tabify is available via Package Control; Command Palette -> Install Package -> Tabify.
Copy Tabify.py
and Tabify.sublime-commands
to $HOME/Library/Application Support/Sublime Text 3/Packages/User/
The default value for the number of tabs is 50.
To override, set tabify_tab_size
in your settings.