Penlight

• GitHub Project
• Documentation

Examples

• seesubst.lua
• sipscan.lua
• symbols.lua
• test-cmp.lua
• test-data.lua
• test-listcallbacks.lua
• test-pretty.lua
• test-symbols.lua
• testclone.lua
• testconfig.lua
• testglobal.lua
• testinputfields.lua
• testinputfields2.lua
• testxml.lua
• which.lua

Libraries

• pl
• pl.app
• pl.array2d
• pl.class
• pl.compat
• pl.comprehension
• pl.config
• pl.data
• pl.dir
• pl.file
• pl.func
• pl.import_into
• pl.input
• pl.lapp
• pl.lexer
• pl.luabalanced
• pl.operator
• pl.path
• pl.permute
• pl.pretty
• pl.seq
• pl.sip
• pl.strict
• pl.stringio
• pl.stringx
• pl.tablex
• pl.template
• pl.test
• pl.text
• pl.types
• pl.url
• pl.utils
• pl.xml

Classes

• pl.Date
• pl.List
• pl.Map
• pl.MultiMap
• pl.OrderedMap
• pl.Set

Manual

• Introduction
• Tables and Arrays
• Strings. Higher-level operations on strings.
• Paths and Directories
• Date and Time
• Data
• Functional Programming
• Additional Libraries
• Technical Choices

testclone.lua

--cloning a directory tree.
local lfs = require 'lfs'
local path = require 'pl.path'
local dir = require 'pl.dir'

local p1 = [[examples]]
local p2 = [[copy/of/examples]]

if not path.isfile 'examples/testclone.lua' then
	return print 'please run this in the penlight folder (below examples)'
end

-- make a copy of the examples folder
dir.clonetree(p1,p2,dir.copyfile)

assert(path.isdir 'copy')

print '---'
local t = os.time()
print(lfs.touch('examples/testclone.lua',t,t+10))

-- this should only update this file
dir.clonetree(p1,p2,
function(f1,f2)
  local t1 = path.getmtime(f1)
  local t2 = path.getmtime(f2)
  --print(f1,t1,f2,t2)
  if t1 > t2 then
	dir.copyfile(f1,f2)
	print(f1,f2,t1,t2)
  end
  return true
end)

-- and get rid of the whole copy directory, with subdirs
dir.rmtree 'copy'

assert(not path.exists 'copy')