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author | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:06:39 +1200 |
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committer | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:46:47 +1200 |
commit | c8ab406749124d2e762ad5cf53963070113afd0f (patch) | |
tree | 54c9721a06957ebe7098a211eea803b0230c0f5d /bin/ap.sh | |
parent | Handle POSIX correctness in ~/.bash_profile (diff) | |
download | dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.tar.gz dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.zip |
Apply runtime shebanging to POSIX shell
Diffstat (limited to 'bin/ap.sh')
-rw-r--r-- | bin/ap.sh | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/bin/ap.sh b/bin/ap.sh new file mode 100644 index 00000000..1d6376cc --- /dev/null +++ b/bin/ap.sh @@ -0,0 +1,33 @@ +# Run a program with args read from standard input, prompted if from term +if [ "$#" -eq 0 ] ; then + printf >&2 'ap: Need at least one argument (command name)\n' + exit 2 +fi + +# Get the command name and shift it off +cmd=$1 +shift + +# Iterate through the remaining args; it's legal for there to be none, but in +# that case the user may as well just have invoked the command directly +for arg ; do + + # If this is the first iteration, clear the params away (we grabbed them in + # the for statement) + if [ -z "$reset" ] ; then + set -- + reset=1 + fi + + # If stdin is a terminal, prompt with the name of the argument + if [ -t 0 ] ; then + printf '%s: ' "$arg" + fi + + # Note that a whitespace or even empty argument is allowed + IFS= read -r val + set -- "$@" "$val" +done + +# Execute the command with the given parameters +exec "$cmd" "$@" |