summaryrefslogtreecommitdiff
path: root/build-aux/Makefile.once.head/00-quote.mk
blob: 9fce401b9489dd60b31a39274c9ece650079053d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
# Copyright (C) 2016  Luke Shumaker
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

mod.quote.description = Macros to quote tricky strings

_quote.backslash = $(if $1,$(call _quote.backslash,$(wordlist 2,$(words $1),$1),$(subst $(firstword $1),\$(firstword $1),$2)),$2)

quote.var     = $(subst $(at.nl),\$(at.nl),$(subst $$,$$$$,$1))
quote.pattern = $(call _quote.backslash, \ % ,$1)
quote.ere     = $(call _quote.backslash, \ ^ . [ $$ ( ) | * + ? { ,$1)
quote.bre     = $(call _quote.backslash, \ ^ . [ $$       *       ,$1)

quote.shell-each = $(foreach _quote.tmp,$1,$(call quote.shell,$(_quote.tmp)))

# I put this as the last line in the file because it confuses Emacs syntax
# highlighting and makes the remainder of the file difficult to edit.
quote.shell = $(subst $(at.nl),'$$'\n'','$(subst ','\'',$1)')