fort/bin/lua/wipf/util/fs.lua
2015-01-19 17:24:15 +05:00

76 lines
1.6 KiB
Lua

-- WIPF File-System Utilities
local sys = require"sys"
local win32 = sys.win32
-- Get Process's Native path by identifier
function pid_dospath(id)
local pid = sys.pid(id, true)
local path = (pid and pid:path()) or ""
pid:close()
return path
end
-- Convert DOS device name to drive letter (A: .. Z:)
local dosname_to_drive
-- Convert drive letter (A: .. Z:) to DOS device name
local drive_to_dosname
do
local drives
local function fill_drives()
drives = {}
for drive in sys.dir("/") do
local dos_name = win32.drive_dosname(drive):lower()
drives[dos_name] = drive
drives[drive] = dos_name
end
end
local function get_value(key)
if not drives or not drives[key] then
fill_drives()
end
return drives[key] or ""
end
dosname_to_drive = function (dos_name)
return get_value(dos_name:lower())
end
drive_to_dosname = function (drive)
return get_value(drive:upper())
end
end
-- Convert Native path to Win32 path
local function dospath_to_path(dos_path)
local dos_name, sub_path = string.match(dos_path, [[(\[^\]+\[^\]+)(\.+)]])
if not dos_name then
return dos_path
end
return dosname_to_drive(dos_name) .. sub_path
end
-- Convert Win32 path to Native path
local function path_to_dospath(path)
local drive, sub_path = string.match(path, [[(%a:)(\.+)]])
if not drive then
return path
end
return drive_to_dosname(drive) .. sub_path
end
return {
dosname_to_drive = dosname_to_drive,
drive_to_dosname = drive_to_dosname,
dospath_to_path = dospath_to_path,
path_to_dospath = path_to_dospath,
}