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# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
# @ECLASS: my-god-its-full-of-quotation-marks.eclass
# @MAINTAINER:
# Gregory M. Turner <gmt@be-evil.net>
# @AUTHOR:
# Gregory M. Turner <gmt@be-evil.net
# @BLURB: pretty printing for lists of arguments possibly containing spaces
# @DESCRIPTION:
# my-god-its-full-of-quotation-marks.eclass provides, unsurprisingly, perhaps, the
# my-god-its-full-of-quotation-marks function.
# @FUNCTION: my-god-its-full-of-quotation-marks
# @USAGE: [list of moderately sane string arguments, each possibly containing spaces]
# @RETURN: 0
# @DESCRIPTION:
# Pretty printer for configure-type arguments, which simply dumps its arguments
# back to stdout after adding quotation marks to ensure unambiguous display
# when some of the arguments may include spaces. Note that this is designed for
# consumption by human eyeballs, not parsers!!! Use printf "%q" for the latter.
# Here we concern ourselves only with dismbiguating the display of (otherwise
# presumptively pre-sanitized) lists of arguments which may contain spaces.
#
# Also replaces any backslashes in the arguments with double-backslashes, and then
# any quotation marks in the arguments with \". These pseudo-escapes
# should preserve disambiguation in the face of quotation-mark- or backslash-containing
# arguments.
my-god-its-full-of-quotation-marks() {
local foo bar
for foo in "$@" ; do
# add a space if bar is nonempty
bar="${bar}${bar:+ }"
# add pseudo-escapes for '\' and '"'
foo="${foo//\\/\\\\}"
foo="${foo//\"/\\\"}"
case $foo in
"")
bar="${bar}\"\""
;;
*\ *=*)
# jesus, wtf
bar="${bar}\"${foo}\""
;;
*=*\ *)
bar="${bar}${foo%%=*}=\"${foo#*=}\""
;;
*\ *)
bar="${bar}\"${foo}\""
;;
*)
bar="${bar}${foo}"
;;
esac
done
echo "${bar}"
}
# @FUNCTION: mg-qm
# @USAGE: <stuff>...
# @RETURN: 0
# @DESCRIPTION:
# It is a bit of a pain in the but to keep typing "my-god-its-full-of-quotation-marks" so this
# handy-dandy alias is supplied. There is no difference between this and the long version.
mg-qm() {
my-god-its-full-of-quotation-marks "$@"
}
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