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Copy pathpath.lua
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598 lines (503 loc) · 13.2 KB
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------------------------------------------------------------------
--
-- Author: Alexey Melnichuk <alexeymelnichuck@gmail.com>
--
-- Copyright (C) 2013-2016 Alexey Melnichuk <alexeymelnichuck@gmail.com>
--
-- Licensed according to the included 'LICENCE' document
--
-- This file is part of lua-path library.
--
------------------------------------------------------------------
local package = require "package"
local string = require "string"
local table = require "table"
local os = require "os"
local io = require "io"
local USE_ALIEN = true
local USE_FFI = true
local USE_AFX = true
local DIR_SEP = package.config:sub(1,1)
local IS_WINDOWS = DIR_SEP == '\\'
local PATH = {}
PATH.DIR_SEP = DIR_SEP
PATH.IS_WINDOWS = IS_WINDOWS
--
-- PATH manipulation
function PATH:unquote(P)
if P:sub(1,1) == '"' and P:sub(-1,-1) == '"' then
return (P:sub(2,-2))
end
return P
end
function PATH:quote(P)
if P:find("%s") then
return '"' .. P .. '"'
end
return P
end
function PATH:has_dir_end(P)
return (string.find(P, '[\\/]$')) and true
end
function PATH:remove_dir_end(P)
return (string.gsub(P, '[\\/]+$', ''))
end
function PATH:ensure_dir_end(P)
return self:remove_dir_end(P) .. self.DIR_SEP
end
function PATH:isunc(P)
return (string.sub(P, 1, 2) == (self.DIR_SEP .. self.DIR_SEP)) and P
end
function PATH:normolize_sep(P)
return (string.gsub(P, '\\', self.DIR_SEP):gsub('/', self.DIR_SEP))
end
PATH.normalize_sep = PATH.normolize_sep
function PATH:normolize(P)
P = self:normolize_sep(P)
local DIR_SEP = self.DIR_SEP
local is_unc = self:isunc(P)
while true do -- `/./` => `/`
local n P,n = string.gsub(P, DIR_SEP .. '%.' .. DIR_SEP, DIR_SEP)
if n == 0 then break end
end
while true do -- `//` => `/`
local n P,n = string.gsub(P, DIR_SEP .. DIR_SEP, DIR_SEP)
if n == 0 then break end
end
P = string.gsub(P, DIR_SEP .. '%.$', '')
if (not IS_WINDOWS) and (P == '') then P = '/' end
if is_unc then P = DIR_SEP .. P end
local root, path = nil, P
if is_unc then
root, path = self:splitroot(P)
end
path = self:ensure_dir_end(path)
while true do
local first, last = string.find(path, DIR_SEP .. "[^".. DIR_SEP .. "]+" .. DIR_SEP .. '%.%.' .. DIR_SEP)
if not first then break end
path = string.sub(path, 1, first) .. string.sub(path, last+1)
end
P = path
if root then -- unc
assert(is_unc)
P = P:gsub( '%.%.?' .. DIR_SEP , '')
P = DIR_SEP .. DIR_SEP .. self:join(root, P)
elseif self.IS_WINDOWS then
-- c:\..\foo => c:\foo
-- \..\foo => \foo
local root, path = self:splitroot(P)
if root ~= '' or P:sub(1,1) == DIR_SEP then
path = path:gsub( '%.%.?' .. DIR_SEP , '')
P = self:join(root, path)
end
end
if self.IS_WINDOWS and #P <= 3 and P:sub(2,2) == ':' then -- c: => c:\ or c:\ => c:\
if #P == 2 then return P .. self.DIR_SEP end
return P
end
if (not self.IS_WINDOWS) and (P == DIR_SEP) then return '/' end
return self:remove_dir_end(P)
end
PATH.normalize = PATH.normolize
function PATH:join_(P1, P2)
local ch = P2:sub(1,1)
if (ch == '\\') or (ch == '/') then
return self:remove_dir_end(P1) .. P2
end
return self:ensure_dir_end(P1) .. P2
end
function PATH:join(...)
local t,n = {...}, select('#', ...)
local r = t[1]
for i = 2, #t do
if self:isfullpath(t[i]) then
r = t[i]
else
r = self:join_(r,t[i])
end
end
return r
end
function PATH:splitext(P)
local s1,s2 = string.match(P,"(.-[^\\/.])(%.[^\\/.]*)$")
if s1 then return s1,s2 end
return P, ''
end
function PATH:splitpath(P)
return string.match(P,"^(.-)[\\/]?([^\\/]*)$")
end
function PATH:splitroot(P)
if self.IS_WINDOWS then
if self:isunc(P) then
return string.match(P, [[^\\([^\/]+)[\]?(.*)$]])
end
if string.sub(P,2,2) == ':' then
return string.sub(P,1,2), string.sub(P,4)
end
return '', P
else
if string.sub(P,1,1) == '/' then
return string.match(P,[[^/([^\/]+)[/]?(.*)$]])
end
return '', P
end
end
function PATH:splitdrive(P)
if self.IS_WINDOWS then
return self:splitroot(P)
end
return '', P
end
function PATH:basename(P)
local s1,s2 = self:splitpath(P)
return s2
end
function PATH:dirname(P)
return (self:splitpath(P))
end
function PATH:extension(P)
local s1,s2 = self:splitext(P)
return s2
end
function PATH:root(P)
return (self:splitroot(P))
end
function PATH:isfullpath(P)
return (self:root(P) ~= '') and P
end
function PATH:user_home()
if IS_WINDOWS then
return os.getenv('USERPROFILE') or PATH:join(os.getenv('HOMEDRIVE'), os.getenv('HOMEPATH'))
end
return os.getenv('HOME')
end
local function prequire(m)
local ok, err = pcall(require, m)
if not ok then return nil, err end
return err
end
local fs = prequire "path.fs"
if fs then
--
-- PATH based on system
local function assert_system(self)
if PATH.IS_WINDOWS then assert(self.IS_WINDOWS) return end
assert(not self.IS_WINDOWS)
end
if fs.flags then
function PATH:flags(P, ...)
assert_system(self)
P = self:fullpath(P)
return fs.flags(P, ...)
end
end
function PATH:tmpdir()
assert_system(self)
return self:remove_dir_end(fs.tmpdir())
end
function PATH:tmpname()
local P = os.tmpname()
if self:dirname(P) == '' then
P = self:join(self:tmpdir(), P)
end
return P
end
function PATH:size(P)
assert_system(self)
return fs.size(P)
end
function PATH:fullpath(P)
if not self:isfullpath(P) then
P = self:normolize_sep(P)
local ch1, ch2 = P:sub(1,1), P:sub(2,2)
if ch1 == '~' then -- ~\temp
P = self:join(self:user_home(), P:sub(2))
elseif self.IS_WINDOWS and (ch1 == self.DIR_SEP) then -- \temp => c:\temp
local root = self:root(self:currentdir())
P = self:join(root, P)
else
P = self:join(self:currentdir(), P)
end
end
return self:normolize(P)
end
function PATH:attrib(P, ...)
assert_system(self)
return fs.attributes(P, ...)
end
function PATH:exists(P)
assert_system(self)
return fs.exists(self:fullpath(P))
end
function PATH:isdir(P)
assert_system(self)
return fs.isdir(self:fullpath(P))
end
function PATH:isfile(P)
assert_system(self)
return fs.isfile(self:fullpath(P))
end
function PATH:islink(P)
assert_system(self)
return fs.islink(self:fullpath(P))
end
function PATH:ctime(P)
assert_system(self)
return fs.ctime(self:fullpath(P))
end
function PATH:mtime(P)
assert_system(self)
return fs.mtime(self:fullpath(P))
end
function PATH:atime(P)
assert_system(self)
return fs.atime(self:fullpath(P))
end
function PATH:touch(P, ...)
assert_system(self)
return fs.touch(self:fullpath(P), ...)
end
function PATH:currentdir()
assert_system(self)
return self:normolize(fs.currentdir())
end
function PATH:chdir(P)
assert_system(self)
return fs.chdir(self:fullpath(P))
end
function PATH:isempty(P)
assert_system(self)
local ok, err = fs.each_impl{
file = self:ensure_dir_end(P),
callback = function() return 'pass' end;
}
if err then return nil, err end
return ok ~= 'pass'
end
local date = prequire "date"
if date then
local function make_getfiletime_as_date(fn)
if date then
return function(...)
local t,e = fn(...)
if not t then return nil, e end
return date(t)
end
end
end
PATH.cdate = make_getfiletime_as_date( PATH.ctime );
PATH.mdate = make_getfiletime_as_date( PATH.mtime );
PATH.adate = make_getfiletime_as_date( PATH.atime );
end
function PATH:mkdir(P)
assert_system(self)
local P = self:fullpath(P)
if self:exists(P) then return self:isdir(P) end
local p = ''
P = self:ensure_dir_end(P)
for str in string.gmatch(P, '.-' .. self.DIR_SEP) do
p = p .. str
if self:exists(p) then
if not self:isdir(p) then
return nil, 'can not create ' .. p
end
else
if IS_WINDOWS or p ~= DIR_SEP then
local ok, err = fs.mkdir(self:remove_dir_end(p))
if not ok then return nil, err .. ' ' .. p end
end
end
end
return P
end
function PATH:rmdir(P)
assert_system(self)
return fs.rmdir(self:fullpath(P))
end
function PATH:rename(from, to, force)
assert_system(self)
from = self:fullpath(from)
to = self:fullpath(to)
return fs.move(from, to, force)
end
local each = require "path.findfile".load(function(opt)
local has_dir_end = PATH:has_dir_end(opt.file)
opt.file = PATH:fullpath(opt.file)
if has_dir_end then opt.file = PATH:ensure_dir_end(opt.file) end
return fs.each_impl(opt)
end)
function PATH:each(...)
assert_system(self)
return each(...)
end
local function copy_impl_batch(self, fs, src_dir, mask, dst_dir, opt)
if not opt then opt = {} end
local overwrite = opt.overwrite
local accept = opt.accept
local onerror = opt.error
local chlen = #fs.DIR_SEP
local count = 0
local existed_dirs = {}
local ok, err = fs.each_impl{file = src_dir .. fs.DIR_SEP .. mask,
delay = opt.delay; recurse = opt.recurse; param = "pnm";
skipdirs = opt.skipdirs; skipfiles = opt.skipfiles;
callback = function(path, name, mode)
local rel = string.sub(path, #src_dir + chlen + 1)
if #rel > 0 then rel = rel .. fs.DIR_SEP .. name else rel = name end
local dst = dst_dir .. fs.DIR_SEP .. rel
local src = path .. fs.DIR_SEP .. name
if accept then
local ok = accept(src, dst, opt)
if not ok then return end
end
local ok, err = true
if mode == "directory" then
if not existed_dirs[dst] then
if not fs.isdir(dst) then
ok, err = self:mkdir(dst)
end
existed_dirs[dst] = true
end
else
local dir = self:splitpath(dst)
if not existed_dirs[dir] then
if not fs.isdir(dst) then
ok, err = self:mkdir(dir)
end
existed_dirs[dir] = true
end
if ok then
ok, err = fs.copy(src, dst, not overwrite)
end
end
if not ok and onerror then
if not onerror(err, src, dst, opt) then -- break
return true
end
else
count = count + 1
end
end;
}
if ok or err then return ok, err end
return count
end
local function remove_impl_batch(fs, src_dir, mask, opt)
if not opt then opt = {} end
local overwrite = opt.overwrite
local accept = opt.accept
local onerror = opt.error
local chlen = #fs.DIR_SEP
local count = 0
local delay = (opt.delay == nil) and true or opt.delay
local ok, err = fs.each_impl{file = src_dir .. fs.DIR_SEP .. mask,
delay = delay; recurse = opt.recurse; reverse = true; param = "fm";
skipdirs = opt.skipdirs; skipfiles = opt.skipfiles;
callback = function(src, mode)
if accept then
local ok = accept(src, opt)
if not ok then return end
end
local ok, err
if mode == "directory" then ok, err = fs.rmdir(src)
else ok, err = fs.remove(src) end
if not ok and onerror then
if not onerror(err, src, opt) then -- break
return true
end
else
count = count + 1
end
end;
}
if ok or err then return ok, err end
return count
end
function PATH:remove_impl(P)
if self:isdir(P) then return fs.rmdir(P) end
return fs.remove(P)
end
function PATH:copy(from, to, opt)
from = self:fullpath(from)
to = self:fullpath(to)
if type(opt) == "boolean" then opt = {overwrite = opt} end
local overwrite = opt and opt.overwrite
local recurse = opt and opt.recurse
local src_dir, src_name = self:splitpath(from)
if recurse or src_name:find("[*?]") then -- batch mode
return copy_impl_batch(self, fs, src_dir, src_name, to, opt)
end
if self.mkdir then self:mkdir(self:dirname(to)) end
return fs.copy(from, to, not not overwrite)
end
function PATH:remove(P, opt)
assert_system(self)
local P = self:fullpath(P)
local dir, name = self:splitpath(P)
if (opt and opt.recurse) or name:find("[*?]") then -- batch mode
return remove_impl_batch(fs, dir, name, opt)
end
return self:remove_impl(P)
end
end -- fs
do -- Python aliases
PATH.split = PATH.splitpath
PATH.isabs = PATH.isfullpath
PATH.normpath = PATH.normolize
PATH.abspath = PATH.fullpath
PATH.getctime = PATH.ctime
PATH.getatime = PATH.atime
PATH.getmtime = PATH.mtime
PATH.getsize = PATH.size
end
local function path_new(o)
o = o or {}
for k, f in pairs(PATH) do
if type(f) == 'function' then
o[k] = function(...)
if o == ... then return f(...) end
return f(o, ...)
end
else
o[k] = f
end
end
return o
end
local function lock_table(t)
return setmetatable(t,{
__newindex = function()
error("Can not change path library", 2)
end;
__metatable = "lua-path object";
})
end
local M = path_new(require "path.module")
local path_cache = setmetatable({}, {__mode='v'})
function M.new(DIR_SEP)
local is_win, sep
if type(DIR_SEP) == 'string' then
sep = DIR_SEP
is_win = (DIR_SEP == '\\')
elseif DIR_SEP ~= nil then
assert(type(DIR_SEP) == 'boolean')
is_win = DIR_SEP
sep = is_win and '\\' or '/'
else
sep = M.DIR_SEP
is_win = M.IS_WINDOWS
end
if M.DIR_SEP == sep then
assert(M.IS_WINDOWS == is_win)
return M
end
local o = path_cache[sep]
if not o then
o = path_new()
o.DIR_SEP = sep
o.IS_WINDOWS = is_win
path_cache[sep] = lock_table(o)
end
return o
end
return lock_table(M)
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