Penlight

• Index

Contents

• Functions

Modules

• pl
• pl.Date
• pl.List
• pl.Map
• pl.MultiMap
• pl.OrderedMap
• pl.Set
• pl.app
• pl.array2d
• pl.class
• pl.comprehension
• pl.config
• pl.data
• pl.dir
• pl.file
• pl.func
• 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.utils
• pl.xml

Topics

• 01-introduction.md
• 02-arrays.md
• 03-strings.md
• 04-paths.md
• 05-dates.md
• 06-data.md
• 07-functional.md
• 08-additional.md
• 09-discussion.md

Examples

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

Module pl.dir

Useful functions for getting directory contents and matching them against wildcards.

Dependencies: pl.utils , pl.path , pl.tablex

Soft Dependencies: alien, ffi (either are used on Windows for copying/moving files)

Functions

fnmatch (file, pattern)	does the filename match the shell pattern?.
filter (files, pattern)	return a list of all files which match the pattern.
getfiles (dir, mask)	return a list of all files in a directory which match the a shell pattern.
getdirectories (dir)	return a list of all subdirectories of the directory.
copyfile (src, dest, flag)	copy a file.
movefile (src, dest)	move a file.
walk (root, bottom_up, follow_links)	return an iterator which walks through a directory tree starting at root.
rmtree (fullpath)	remove a whole directory tree.
makepath (p)	create a directory path.
clonetree (path1, path2, file_fun, verbose)	clone a directory tree.
dirtree (d)	return an iterator over all entries in a directory tree
getallfiles (start_path, pattern)	Recursively returns all the file starting at path.

Functions

fnmatch (file, pattern)

does the filename match the shell pattern?. (cf. fnmatch.fnmatch in Python, 11.8)

Parameters:

• file: A file name
• pattern: A shell pattern

Returns:

true or false

Raises:

file and pattern must be strings

filter (files, pattern)

return a list of all files which match the pattern. (cf. fnmatch.filter in Python, 11.8)

Parameters:

• files: A table containing file names
• pattern: A shell pattern.

Returns:

list of files

Raises:

file and pattern must be strings

getfiles (dir, mask)

return a list of all files in a directory which match the a shell pattern.

Parameters:

• dir: A directory. If not given, all files in current directory are returned.
• mask: A shell pattern. If not given, all files are returned.

Returns:

lsit of files

Raises:

dir and mask must be strings

getdirectories (dir)

return a list of all subdirectories of the directory.

Parameters:

• dir: A directory

Returns:

a list of directories

Raises:

dir must be a string

copyfile (src, dest, flag)

copy a file.

Parameters:

• src: source file
• dest: destination file or directory
• flag: true if you want to force the copy (default)

Returns:

true if operation succeeded

Raises:

src and dest must be strings

movefile (src, dest)

move a file.

Parameters:

• src: source file
• dest: destination file or directory

Returns:

true if operation succeeded

Raises:

src and dest must be strings

walk (root, bottom_up, follow_links)

return an iterator which walks through a directory tree starting at root. The iterator returns (root,dirs,files) Note that dirs and files are lists of names (i.e. you must say path.join(root,d) to get the actual full path) If bottom_up is false (or not present), then the entries at the current level are returned before we go deeper. This means that you can modify the returned list of directories before continuing. This is a clone of os.walk from the Python libraries.

Parameters:

• root: A starting directory
• bottom_up: False if we start listing entries immediately.
• follow_links: follow symbolic links

Returns:

an iterator returning root,dirs,files

Raises:

root must be a string

rmtree (fullpath)

remove a whole directory tree.

Parameters:

• fullpath: A directory path

Returns:

1. true or nil
2. error if failed

Raises:

fullpath must be a string

makepath (p)

create a directory path. This will create subdirectories as necessary!

Parameters:

• p: A directory path

Returns:

a valid created path

Raises:

p must be a string

clonetree (path1, path2, file_fun, verbose)

clone a directory tree. Will always try to create a new directory structure if necessary.

Parameters:

• path1: the base path of the source tree
• path2: the new base path for the destination
• file_fun: an optional function to apply on all files
• verbose: an optional boolean to control the verbosity of the output. It can also be a logging function that behaves like print()

Usage:

clonetree('.','../backup',copyfile)

Returns:

1. true, or nil
2. error message, or list of failed directory creations
3. list of failed file operations

Raises:

path1 and path2 must be strings

dirtree (d)

return an iterator over all entries in a directory tree

Parameters:

• d: a directory

Returns:

an iterator giving pathname and mode (true for dir, false otherwise)

Raises:

d must be a non-empty string

getallfiles (start_path, pattern)

Recursively returns all the file starting at path. It can optionally take a shell pattern and

only returns files that match <i>pattern</i>. If a pattern is given it will do a case insensitive search.

Parameters:

• start_path: {string} A directory. If not given, all files in current directory are returned.
• pattern: {string} A shell pattern. If not given, all files are returned.

Returns:

Table containing all the files found recursively starting at path and filtered by pattern.

Raises:

start_path must be a string