From 80af57ed9edf153d26b5ace9a283c24cb5a22762 Mon Sep 17 00:00:00 2001
From: Nathan Sharp <nwsharp@live.com>
Date: Mon, 11 Apr 2022 22:59:30 -0600
Subject: [PATCH] pipesz: add bash-completion script

Signed-off-by: Nathan Sharp <nwsharp@live.com>
---
 bash-completion/Makemodule.am |   3 +
 bash-completion/pipesz        | 102 ++++++++++++++++++++++++++++++++++
 meson.build                   |   1 +
 3 files changed, 106 insertions(+)
 create mode 100644 bash-completion/pipesz

diff --git a/bash-completion/Makemodule.am b/bash-completion/Makemodule.am
index f85211476f..5d59b5593f 100644
--- a/bash-completion/Makemodule.am
+++ b/bash-completion/Makemodule.am
@@ -335,5 +335,8 @@ endif
 if BUILD_HARDLINK
 dist_bashcompletion_DATA += bash-completion/hardlink
 endif
+if BUILD_PIPESZ
+dist_bashcompletion_DATA += bash-completion/pipesz
+endif
 
 endif # BUILD_BASH_COMPLETION
diff --git a/bash-completion/pipesz b/bash-completion/pipesz
new file mode 100644
index 0000000000..592075cf30
--- /dev/null
+++ b/bash-completion/pipesz
@@ -0,0 +1,102 @@
+_pipesz_module()
+{
+	local WORD OPTS OPTARG OPTEND SOPT LOPT TARG
+	local SOPTS=(g s f n i o e c q v h V)
+	local LOPTS=(get set file fd stdin stdout stderr check quiet verbose help version)
+	local AOPTS=(0 1 1 1 0 0 0 0 0 0 0 0) # takes argument
+	local TOPTS=(1 0 1 1 1 1 1 0 0 0 0 0) # specifies target
+	local XOPTS=(0 0 0 0 0 0 0 0 0 0 1 1) # exits immediately
+	local MOPTS=(0 0 1 1 0 0 0 0 0 0 0 0) # repeatable
+	local NOPTS=(0 0 0 0 0 0 0 0 0 0 0 0) # number of repeats
+	local IDXG=0 IDXS=1                   # index of --get and --set
+
+	for ((i=1; i<COMP_CWORD; i++)); do
+		WORD=${COMP_WORDS[i]}
+
+		if [[ ${NOPTS[$IDXG]} -eq 0 ]]; then
+			case $WORD in
+				--)
+					_command_offset $((i+1))
+					return 0;;
+				[^-]*)
+					_command_offset $i
+					return 0;;
+			esac
+		fi
+
+		for ((j=0; j<${#NOPTS[@]}; j++)); do
+			SOPT=${SOPTS[$j]}
+			LOPT=${LOPTS[$j]}
+
+			case $WORD in
+				--$LOPT) OPTEND=l;;
+				--*) continue;;
+				-*$SOPT) OPTEND=s;;
+				-*$SOPT*) OPTEND=n;;
+				*) continue;;
+			esac
+
+			if [[ ${XOPTS[$j]} -ne 0 ]]; then
+				COMPREPLY=()
+				return 0
+			fi
+
+			((NOPTS[j]++))
+
+			[[ ${TOPTS[$j]} -ne 0 ]] && TARG=y
+			[[ $OPTEND != n ]] && ((i+=AOPTS[j]))
+			[[ $OPTEND == l ]] && break
+		done
+	done
+
+	case $3 in
+		--fd) OPTARG=n;;
+		--file) OPTARG=f;;
+		--size) OPTARG=s;;
+		--*) ;;
+		-*n) OPTARG=n;;
+		-*f) OPTARG=f;;
+		-*s) OPTARG=s;;
+	esac
+
+	case $OPTARG in
+		f)
+			compopt -o filenames
+			COMPREPLY=( $(compgen -f -- "$2") )
+			return 0;;
+		n)
+			COMPREPLY=( $(compgen -W "0 1 2" -- "$2") )
+			return 0;;
+		s)
+			WORD=$2
+			if [[ ! $WORD =~ ^[0-9]+[a-zA-Z]*$ ]]; then
+				COMPREPLY=()
+				return 0
+			fi
+
+			while [[ $WORD =~ [a-zA-Z]$ ]]; do WORD=${WORD:0:-1}; done
+
+			compopt -o nosort
+			COMPREPLY=( $(compgen -W "$WORD $WORD{K,M,G}{B,iB}" -- "$2") )
+			return 0;;
+	esac
+
+	for ((j=0; j<${#NOPTS[@]}; j++)); do
+		[[ $j -eq $IDXG && ${NOPTS[$IDXS]} -ne 0 ]] && continue
+		[[ $j -eq $IDXS && ${NOPTS[$IDXG]} -ne 0 ]] && continue
+		[[ $COMP_CWORD -ne 1 && ${XOPTS[$j]} -ne 0 ]] && continue
+		[[ ${NOPTS[$j]} -gt 0 && ${MOPTS[$j]} -eq 0 ]] && continue
+
+		[[ $2 != --* && $2 == -* ]] && OPTS+=" -${SOPTS[$j]}"
+		OPTS+=" --${LOPTS[$j]}"
+	done
+
+	if [[ ! $TARG || ${NOPTS[$IDXG]} -ne 0 ]]; then
+		COMPREPLY=( $(compgen -W "$OPTS" -- "$2") )
+	else
+		compopt -o filenames
+		COMPREPLY=( $(compgen -c -W "$OPTS --" -- "$2") )
+	fi
+}
+
+complete -F _pipesz_module pipesz
diff --git a/meson.build b/meson.build
index 0e4a94bb50..460c322e78 100644
--- a/meson.build
+++ b/meson.build
@@ -2694,6 +2694,7 @@ exe = executable(
 if opt and not is_disabler(exe)
   exes += exe
   manadocs += ['misc-utils/pipesz.1.adoc']
+  bashcompletions += ['pipesz']
 endif
 
 exe = executable(
-- 
2.47.3