Hilbish/nature/dirs.lua

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local fs = require 'fs'
local dirs = {}
--- Last (current working) directory. Separate from recentDirs mainly for
--- easier use.
dirs.old = ''
--- Table of recent directories. For use, look at public functions.
dirs.recentDirs = {}
--- Size of the recentDirs table.
dirs.recentSize = 10
--- Get (and remove) a `num` of entries from recent directories.
--- @param num number
--- @param remove boolean Whether to remove items
function dirRecents(num, remove)
num = num or 1
local entries = {}
if #dirs.recentDirs ~= 0 then
for i = 1, num do
local idx = remove and 1 or i
if not dirs.recentDirs[idx] then break end
table.insert(entries, dirs.recentDirs[idx])
if remove then table.remove(dirs.recentDirs, 1) end
end
end
if #entries == 1 then
return entries[1]
end
return entries
end
--- Look at `num` amount of recent directories, starting from the latest.
--- @param num? number
function dirs.peak(num)
return dirRecents(num)
end
--- Add `d` to the recent directories.
function dirs.push(d)
dirs.recentDirs[dirs.recentSize + 1] = nil
if dirs.recentDirs[#dirs.recentDirs - 1] ~= d then
ok, d = pcall(fs.abs, d)
assert(ok, 'could not turn "' .. d .. '"into an absolute path')
table.insert(dirs.recentDirs, 1, d)
end
end
--- Remove `num` amount of dirs from the recent directories.
--- @param num number
function dirs.pop(num)
return dirRecents(num, true)
end
--- Get entry from recent directories.
--- @param idx number
function dirs.recent(idx)
return dirs.recentDirs[idx]
end
--- Sets the old directory.
--- @param d string
function dirs.setOld(d)
ok, d = pcall(fs.abs, d)
assert(ok, 'could not turn "' .. d .. '"into an absolute path')
os.setenv('OLDPWD', d)
dirs.old = d
end
return dirs