3 # $NetBSD: scoped_command,v 1.2 2016/03/27 14:57:50 christos Exp $
5 # Copyright (c) 2014 The NetBSD Foundation, Inc.
8 # This code is derived from software contributed to The NetBSD Foundation
11 # Redistribution and use in source and binary forms, with or without
12 # modification, are permitted provided that the following conditions
14 # 1. Redistributions of source code must retain the above copyright
15 # notice, this list of conditions and the following disclaimer.
16 # 2. Redistributions in binary form must reproduce the above copyright
17 # notice, this list of conditions and the following disclaimer in the
18 # documentation and/or other materials provided with the distribution.
20 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 # POSSIBILITY OF SUCH DAMAGE.
41 (*) set "$1";; # Just ignore options if we cannot make them work
45 /*) TEST_SH="$1${2+ }$2";;
46 ./*) TEST_SH="${PWD}${1#.}${2+ }$2";;
47 */*) TEST_SH="${PWD}/$1${2+ }$2";;
48 *) TEST_SH="$( command -v "$1" )${2+ }$2";;
57 # scoped_command scope cmd msg var_suffix
59 # Write to stdout a piece of Bourne Shell script with _cmd_ in specific
60 # _scope_. The execution of _cmd_ is bracketed by prints of "before _msg_"
61 # and "after _msg_, return value ${?}". If the generated script uses
62 # variables, __var_suffix_ is appended to their names to allow nesting of
63 # scripts generated this way.
65 # _scope_ should be one of: case, compound, file, for, func, subshell,
67 # _cmd_ is the command line to execute. Remember proper quoting!
68 # _msg_ is text that will be used inside single quotes.
69 # _var_suffix_ is a syntactically valid identifier name.
71 # don't rely on command lists (';')
72 cmd="echo 'before ${3}'
74 echo 'after ${3}, return value:' ${?}"
78 [ 'func' = "${1}" ] && cat <<EOF
86 echo 'before function'
87 func "${2}" "${3}" # don't rely on 'shift'
91 [ 'case' = "${1}" ] && cat <<EOF
99 [ 'file' = "${1}" ] && cat <<EOF
103 [ 'while' = "${1}" ] && cat <<EOF
105 cond_${4}='true true false'
108 cond_${4}="\${cond_${4}#* }"
114 [ 'until' = "${1}" ] && cat <<EOF
116 cond_${4}='false false true'
119 cond_${4}="\${cond_${4}#* }"
125 [ 'for' = "${1}" ] && cat <<EOF
134 [ 'subshell' = "${1}" ] && cat <<EOF
136 echo 'subshell start'
142 [ 'compound' = "${1}" ] && cat <<EOF
144 echo 'compound start'