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--- Personal lua config files for NeoVim.
-- Last Changed: 2019-01-27
-- Author: Federico Igne <git@federicoigne.com>
-- License: This file is placed in the public domain.
local session = {}
-- Used as a dummy session file, when vim-obsession is loaded but the
-- current tab is not being tracked.
session.dummy = vim.env.NVIM_SESSIONS .. '/dummy.vim'
--- Get session name for current tab.
--
-- @param[opt=false] escaped whether to escape the file name or not
-- @return full path to session file
function session.name(escaped)
local escaped = escaped or false
local name = vim.fn.getcwd(-1,0):gsub('/','%%') .. ".vim"
local path = vim.env.NVIM_SESSIONS .. '/'
if escaped then
path = path .. vim.fn.fnameescape(name)
else
path = path .. name
end
return path
end
--- Check if the session file (current tab) exists and it's readable.
function session.exists()
return vim.fn.filereadable(session.name()) ~= 0
end
--- Create a new or load an existing session file.
--
-- This is essentially a wrapper around vim-obsession to make it
-- tab-aware. Starts tracking a new session if none exists for the
-- current tab.
function session.load()
local cmd = 'mksession!'
if session.exists() then
cmd = 'source'
elseif vim.fn.exists(':Obsession') then
cmd = 'Obsession'
end
vim.t.this_session = session.name()
vim.api.nvim_command(cmd .. ' ' .. session.name(true))
end
--- Prompt to switch session on a `DirChanged` event.
--
-- When using `:tcd` to switch working directory prompt the user to
-- switch session (creating a new one if necessary).
function session.changed(event)
if not event.changed_window and
event.scope == 'tab' and
vim.t.this_session ~= session.name()
then
local action = "Create"
if session.exists() then action = "Load" end
if vim.fn.input(action .. " session for the current project? [yN]: ") == 'y' then
session.load()
end
end
end
--- Helper function triggered by `ObsessionPre`
--
-- Save custom tab names in session
function session.pre()
if vim.t.tablabel then
vim.g.obsession_append = { 'let t:tablabel = "' .. vim.t.tablabel .. '"' }
end
end
return session
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