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Refactor skim-stdin #280

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Merged
merged 1 commit into from
Jan 19, 2020
+10 −10
Merged

Refactor skim-stdin #280

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20 changes: 10 additions & 10 deletions lib/shared-functions
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Original file line number Diff line number Diff line change
Expand Up @@ -11,24 +11,24 @@ skim-stdin() {
#
# Implementation of `pipe-skimming` pattern.
#
# Typical usage within Bash-my-AWS:
#
# - local asg_names=$(skim-stdin "$@") # Append to arg list
# - local asg_names=$(skim-stdin) # Only draw from STDIN
#
# $ stacks | skim-stdin foo bar
# foo bar huginn mastodon grafana
#
# $ stacks
# huginn CREATE_COMPLETE 2020-01-11T06:18:46.905Z NEVER_UPDATED NOT_NESTED
# mastodon CREATE_COMPLETE 2020-01-11T06:19:31.958Z NEVER_UPDATED NOT_NESTED
# grafana CREATE_COMPLETE 2020-01-11T06:19:47.001Z NEVER_UPDATED NOT_NESTED
#
# Typical usage within Bash-my-AWS functions:
#
# local asg_names=$(skim-stdin "$@") # Append to arg list
# local asg_names=$(skim-stdin) # Only draw from STDIN

local skimmed_stdin="$([[ -t 0 ]] || awk 'ORS=" " { print $1 }')"

printf -- '%s %s' "$*" "$skimmed_stdin" |
awk '{$1=$1;print}' # trim leading/trailing spaces

(
printf -- "$*" # Print all args
printf " " # Print a space
[[ -t 0 ]] || awk 'ORS=" " { print $1 }' # Print first token of each line of STDIN
) | awk '{$1=$1;print}' # Trim leading/trailing spaces
}


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