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author | Karel Zak | 2006-12-07 00:25:35 +0100 |
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committer | Karel Zak | 2006-12-07 00:25:35 +0100 |
commit | 2b6fc908bc368b540845a313c3b8a867c5ad9a42 (patch) | |
tree | 6fad48a239bc90515a5dc4084d6e3c3ee1f41e29 /getopt/parse.bash | |
parent | Imported from util-linux-2.7.1 tarball. (diff) | |
download | kernel-qcow2-util-linux-2b6fc908bc368b540845a313c3b8a867c5ad9a42.tar.gz kernel-qcow2-util-linux-2b6fc908bc368b540845a313c3b8a867c5ad9a42.tar.xz kernel-qcow2-util-linux-2b6fc908bc368b540845a313c3b8a867c5ad9a42.zip |
Imported from util-linux-2.8 tarball.
Diffstat (limited to 'getopt/parse.bash')
-rw-r--r-- | getopt/parse.bash | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/getopt/parse.bash b/getopt/parse.bash new file mode 100644 index 000000000..864fc0add --- /dev/null +++ b/getopt/parse.bash @@ -0,0 +1,47 @@ +#!/bin/bash + +# A small example program for using the new getopt(1) program. +# This program will only work with bash(1) +# An similar program using the tcsh(1) script language can be found +# as parse.tcsh + +# Example input and output (from the bash prompt): +# ./parse.bash -a par1 'another arg' --c-long 'wow!*\?' -cmore -b " very long " +# Option a +# Option c, no argument +# Option c, argument `more' +# Option b, argument ` very long ' +# Remaining arguments: +# --> `par1' +# --> `another arg' +# --> `wow!*\?' + +# Note that we use `"$@"' to let each command-line parameter expand to a +# separate word. The quotes around `$@' are essential! +# We need TEMP as the `eval set --' would nuke the return value of getopt. +TEMP=`getopt -o ab:c:: --long a-long,b-long:,c-long:: \ + -n 'example.bash' -- "$@"` + +if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi + +# Note the quotes around `$TEMP': they are essential! +eval set -- "$TEMP" + +while true ; do + case "$1" in + -a|--a-long) echo "Option a" ; shift ;; + -b|--b-long) echo "Option b, argument \`$2'" ; shift 2 ;; + -c|--c-long) + # c has an optional argument. As we are in quoted mode, + # an empty parameter will be generated if its optional + # argument is not found. + case "$2" in + "") echo "Option c, no argument"; shift 2 ;; + *) echo "Option c, argument \`$2'" ; shift 2 ;; + esac ;; + --) shift ; break ;; + *) echo "Internal error!" ; exit 1 ;; + esac +done +echo "Remaining arguments:" +for arg do echo '--> '"\`$arg'" ; done |