CL-shellwords is a port of Ruby's shellwords.rb to Common Lisp. It can be used to escape strings for use on the (Bourne) shell, or to split command lines into segments according to the shell's escaping rules.
CL-shellwords depends only on CL-PPCRE (BSD). The tests additionally depend on Prove (MIT).
CL-shellwords defines the package :cl-shellwords, with the alias :shellwords. This package exports three functions, a condition and an accessor for that condition.
(split string)Split STRING into a list of words, handling escaping the same way a shell like the Bourne shell does.
Whitespace normally acts as a word separator, except when preceded by a backslash or enclosed in single- or double quotes.
Examples:
(split "example string")
;=> ("example" "string")
(split "example\ escaped string")
;=> ("example escaped" "string")
(split "example 'escaped string'")
;=> ("example" "escaped string")
(split "example "escaped string"")
;=> ("example" "escaped string")If STRING contains non-matching single- or double quotes, an error of type UNMATCHED-QUOTE-ERROR is signaled. STRING can be retrieved from the error object using UNMATCHED-QUOTE-ERROR-STRING.
(escape string)Escape STRING so that it is safe when used as an argument in a shell like
the Bourne shell.
- If
STRINGis an empty string, a pair of single quotes is returned. - An LF character is escaped by placing it in single quotes.
- All other special characters are escaped with a backslash.
Examples:
(escape "")
;=> "''"
(escape "It's an example string")
;=> "It\s\ an\ example\ string"
(escape "NothingWrongHere")
;=> "NothingWrongHere"
(escape "{LF}")
;=> "'{LF}'" ({LF} = #\linefeed)(join sequence)Join the elements of SEQUENCE together, separated by spaces. The elements are first passed to ESCAPE for proper escaping.
SEQUENCE should be a list or vector of strings.
Copyright (c) 2015 Joram Schrijver
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