scoped_command revision 1.1.2.2
1 1.1.2.2 tls #!/bin/sh 2 1.1.2.2 tls # 3 1.1.2.2 tls # $NetBSD: scoped_command,v 1.1.2.2 2014/08/10 06:57:02 tls Exp $ 4 1.1.2.2 tls # 5 1.1.2.2 tls # Copyright (c) 2014 The NetBSD Foundation, Inc. 6 1.1.2.2 tls # All rights reserved. 7 1.1.2.2 tls # 8 1.1.2.2 tls # This code is derived from software contributed to The NetBSD Foundation 9 1.1.2.2 tls # by Jarmo Jaakkola. 10 1.1.2.2 tls # 11 1.1.2.2 tls # Redistribution and use in source and binary forms, with or without 12 1.1.2.2 tls # modification, are permitted provided that the following conditions 13 1.1.2.2 tls # are met: 14 1.1.2.2 tls # 1. Redistributions of source code must retain the above copyright 15 1.1.2.2 tls # notice, this list of conditions and the following disclaimer. 16 1.1.2.2 tls # 2. Redistributions in binary form must reproduce the above copyright 17 1.1.2.2 tls # notice, this list of conditions and the following disclaimer in the 18 1.1.2.2 tls # documentation and/or other materials provided with the distribution. 19 1.1.2.2 tls # 20 1.1.2.2 tls # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 1.1.2.2 tls # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 1.1.2.2 tls # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 1.1.2.2 tls # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 1.1.2.2 tls # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 1.1.2.2 tls # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 1.1.2.2 tls # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 1.1.2.2 tls # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 1.1.2.2 tls # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 1.1.2.2 tls # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 1.1.2.2 tls # POSSIBILITY OF SUCH DAMAGE. 31 1.1.2.2 tls # 32 1.1.2.2 tls 33 1.1.2.2 tls set -e 34 1.1.2.2 tls 35 1.1.2.2 tls # USAGE: 36 1.1.2.2 tls # scoped_command scope cmd msg var_suffix 37 1.1.2.2 tls # 38 1.1.2.2 tls # Write to stdout a piece of Bourne Shell script with _cmd_ in specific 39 1.1.2.2 tls # _scope_. The execution of _cmd_ is bracketed by prints of "before _msg_" 40 1.1.2.2 tls # and "after _msg_, return value ${?}". If the generated script uses 41 1.1.2.2 tls # variables, __var_suffix_ is appended to their names to allow nesting of 42 1.1.2.2 tls # scripts generated this way. 43 1.1.2.2 tls # 44 1.1.2.2 tls # _scope_ should be one of: case, compound, file, for, func, subshell, 45 1.1.2.2 tls # until, while. 46 1.1.2.2 tls # _cmd_ is the command line to execute. Remember proper quoting! 47 1.1.2.2 tls # _msg_ is text that will be used inside single quotes. 48 1.1.2.2 tls # _var_suffix_ is a syntactically valid identifier name. 49 1.1.2.2 tls 50 1.1.2.2 tls # don't rely on command lists (';') 51 1.1.2.2 tls cmd="echo 'before ${3}' 52 1.1.2.2 tls ${2} 53 1.1.2.2 tls echo 'after ${3}, return value:' ${?}" 54 1.1.2.2 tls 55 1.1.2.2 tls echo "#!/bin/sh" 56 1.1.2.2 tls 57 1.1.2.2 tls [ 'func' = "${1}" ] && cat <<EOF 58 1.1.2.2 tls func() 59 1.1.2.2 tls { 60 1.1.2.2 tls echo 'before ${3}' 61 1.1.2.2 tls \${1} 62 1.1.2.2 tls echo 'after ${3}' 63 1.1.2.2 tls } 64 1.1.2.2 tls 65 1.1.2.2 tls echo 'before function' 66 1.1.2.2 tls func "${2}" "${3}" # don't rely on 'shift' 67 1.1.2.2 tls echo 'after function' 68 1.1.2.2 tls EOF 69 1.1.2.2 tls 70 1.1.2.2 tls [ 'case' = "${1}" ] && cat <<EOF 71 1.1.2.2 tls echo 'before case' 72 1.1.2.2 tls case 'a' in 73 1.1.2.2 tls a) ${cmd};; 74 1.1.2.2 tls esac 75 1.1.2.2 tls echo 'after case' 76 1.1.2.2 tls EOF 77 1.1.2.2 tls 78 1.1.2.2 tls [ 'file' = "${1}" ] && cat <<EOF 79 1.1.2.2 tls ${cmd} 80 1.1.2.2 tls EOF 81 1.1.2.2 tls 82 1.1.2.2 tls [ 'while' = "${1}" ] && cat <<EOF 83 1.1.2.2 tls echo 'before while' 84 1.1.2.2 tls cond_${4}='true true false' 85 1.1.2.2 tls while \${cond_${4}} 86 1.1.2.2 tls do 87 1.1.2.2 tls cond_${4}="\${cond_${4}#* }" 88 1.1.2.2 tls ${cmd} 89 1.1.2.2 tls done 90 1.1.2.2 tls echo 'after while' 91 1.1.2.2 tls EOF 92 1.1.2.2 tls 93 1.1.2.2 tls [ 'until' = "${1}" ] && cat <<EOF 94 1.1.2.2 tls echo 'before until' 95 1.1.2.2 tls cond_${4}='false false true' 96 1.1.2.2 tls until \${cond_${4}} 97 1.1.2.2 tls do 98 1.1.2.2 tls cond_${4}="\${cond_${4}#* }" 99 1.1.2.2 tls ${cmd} 100 1.1.2.2 tls done 101 1.1.2.2 tls echo 'after until' 102 1.1.2.2 tls EOF 103 1.1.2.2 tls 104 1.1.2.2 tls [ 'for' = "${1}" ] && cat <<EOF 105 1.1.2.2 tls echo 'before for' 106 1.1.2.2 tls for i_${4} in 1 2 107 1.1.2.2 tls do 108 1.1.2.2 tls ${cmd} 109 1.1.2.2 tls done 110 1.1.2.2 tls echo 'after for' 111 1.1.2.2 tls EOF 112 1.1.2.2 tls 113 1.1.2.2 tls [ 'subshell' = "${1}" ] && cat <<EOF 114 1.1.2.2 tls ( 115 1.1.2.2 tls echo 'subshell start' 116 1.1.2.2 tls ${cmd} 117 1.1.2.2 tls echo 'subshell end' 118 1.1.2.2 tls ) 119 1.1.2.2 tls EOF 120 1.1.2.2 tls 121 1.1.2.2 tls [ 'compound' = "${1}" ] && cat <<EOF 122 1.1.2.2 tls { 123 1.1.2.2 tls echo 'compound start' 124 1.1.2.2 tls ${cmd}; 125 1.1.2.2 tls echo 'compound end' 126 1.1.2.2 tls } 127 1.1.2.2 tls EOF 128 1.1.2.2 tls 129 1.1.2.2 tls exit 0 130
Indexes created Mon Oct 20 11:09:49 GMT 2025