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Path = {}
function Path:new(p)
local is_absolute = p:sub(1, 1) == "/"
p = p:gsub("/+", "/")
p = p:gsub("(/%./", "/")
p = p:gsub("/%.$", "")
p = p:gsub("/$", "")
p = p:gsub("^%./", "")
p = p:gsub("/[^/]+/%.%.", "")
p = p:gsub("^[^/]+/%.%./", "")
local path = {
segments = p:split('/'),
is_absolute = is_absolute
}
setmetatable(path, self)
self.__index = self
return path
end
function Path:name()
return self.segments[#self.segments]
end
function Path:stem()
return self.segments[#self.segments]:match('[^.]+')
end
function Path:parent()
return self / ".."
end
function Path:__tostring()
return (self.is_absolute and "/" or "") .. table.concat(self.segments, "/")
end
function Path:__div(next)
if next.is_absolute then
error("cannot concat with absolute path")
end
return Path:new(self:__tostring() .. "/" .. tostring(next))
end
function Path:open(mode)
return io.open(tostring(self), mode)
end
function Path:exists()
local f = self:open('r')
if f ~= nil then
f:close()
return true
end
return false
end
function Path:is_directory()
local f = self:open('r')
if not f then
return false
end
local value, err, code = f:read()
f:close()
return code == 21
end
function Path:entries()
if not self:is_directory() then
return function() end
end
local pipe = io.popen('ls' .. ' "' .. tostring(self) .. '"')
local lines = pipe:lines()
return function()
local value = lines()
if value == nil then
pipe:close()
return nil
end
return self / value
end
end
function Path:children()
if not self:is_directory() then
return function() end
end
local pipe = io.popen('find' .. ' "' .. tostring(self) .. '"')
local lines = pipe:lines()
return function()
local value = lines()
if value == nil then
pipe:close()
return nil
end
return Path:new(value)
end
end
function Path:make_directory(opts)
local pipe = io.popen('mkdir ' .. (opts.create_parents and '-p ' or ' ') .. tostring(self))
pipe:close()
end
function Path:copy_to(target)
local pipe = io.popen('cp -r ' .. tostring(self) .. ' ' .. tostring(target))
pipe:close()
end
function Path:remove(opts)
local pipe = io.popen('rm ' ..
(opts.recursive and '-r ' or ' ') ..
(opts.force and '-f ' or ' ') ..
tostring(self)
)
pipe:close()
end
function Path:is_parent_of(child)
return tostring(child):starts_with(tostring(self))
end
function Path:relative_to_parent(path)
if not path:is_parent_of(self) then
return nil
end
return Path:new(tostring(self):sub(#tostring(path) + 2))
end
return {
tests = {
function()
local path = Path:new("some/path/here")
assert.equals("here", path:name())
end,
function()
local path = Path:new("some/path/here.txt")
assert.equals("here", path:stem())
end,
function()
local path = Path:new("some/path/here.txt")
assert.equals("some/path", path:parent():__tostring())
end,
function()
local path = Path:new("some/path/here.txt")
assert.equals("some/path/here.txt", path:__tostring())
end,
function()
local path = Path:new("some/path/here")
path = path / 'next.txt'
assert.equals("some/path/here/next.txt", path:__tostring())
end,
function()
local path = Path:new("./src")
assert.equals(true, path:is_directory())
end,
function()
local path = Path:new("./src/blueprint")
assert.equals(false, path:is_directory())
end,
function()
local path = Path:new("./src/blueprint")
assert.equals(true, path:exists())
end,
function()
local path = Path:new("./src/blueprint__")
assert.equals(false, path:exists())
end
}
}
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