consolidate the .local/bin/x-* program-picking code into a `pick` command

4 files changed, 45 insertions, 28 deletions

diff --git a/.local/bin/pick b/.local/bin/pick
new file mode 100755
index 0000000..ed2d44d
--- /dev/null
+++ b/.local/bin/pick
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+cmd=${0##*/}
+
+if [[ $1 = -h ]]; then
+	echo "Usage: $cmd PROG1 PROG2 PROG3..."
+	echo "       $cmd -s PROG1 PROG2 PROG3..."
+	echo ""
+	echo "If \`-s' ISN'T given, print the first program name given that is"
+	echo "found in PATH."
+	echo ""
+	echo "If \`-s' IS given, print the first program name given that is"
+	echo "currently running.  If no match is found, fall back to default"
+	echo "behavior."
+	exit 0
+fi
+
+if [[ $1 = -s ]]; then
+	shift
+	# Scan to find a running instance
+	for prog in "$@"; do
+		if [[ -n "`pgrep $prog`" ]]; then
+			printf '%s\n' "$prog"
+			exit 0
+		fi
+	done
+fi
+
+# Scan to find one that is installed
+for prog in "$@"; do
+    if [[ -x "`which $prog 2>/dev/null`" ]]; then
+		printf '%s\n' "$prog"
+		exit 0
+    fi
+done
+
+printf '%s\n' "$cmd: no suitable program found"
+exit 1
diff --git a/.local/bin/x-pdf b/.local/bin/x-pdf
index a9893c0..1b23a3d 100755
--- a/.local/bin/x-pdf
+++ b/.local/bin/x-pdf
@@ -1,9 +1,4 @@
 #!/bin/sh
 
-if   [ -x "`which okular 2>/dev/null`" ]; then
-	okular "$@"
-elif   [ -x "`which evince 2>/dev/null`" ]; then
-	evince "$@"
-elif [ -x "`which xpdf 2>/dev/null`" ]; then
-	xpdf "$@"
-fi
+`pick evince okular xpdf` "$@"
+exit $?
diff --git a/.local/bin/x-terminal-emulator b/.local/bin/x-terminal-emulator
index f7290b4..049b081 100755
--- a/.local/bin/x-terminal-emulator
+++ b/.local/bin/x-terminal-emulator
@@ -1,10 +1,4 @@
 #!/bin/sh
-if   [ -x "`which emacsterm`" ]; then
-	emacsterm $@
-elif [ -x "`which urxvt`" ]; then
-	urxvt $@
-elif [ -x "`which gnome-terminal`" ]; then
-	gnome-terminal $@
-elif [ -x "`which xterm`"]; then
-	xterm $@
-fi
+
+`pick emacsterm urxvt gnome-terminal xterm` "$@"
+exit $?
diff --git a/.local/bin/x-www-browser b/.local/bin/x-www-browser
index 0ead72a..bbd8943 100755
--- a/.local/bin/x-www-browser
+++ b/.local/bin/x-www-browser
@@ -1,14 +1,4 @@
 #!/bin/sh
 
-list='firefox iceweasel icecat conkeror'
-
-looking=true
-for prog in $list; do
-	if $looking && [ -n "`pgrep $prog`" ]; then
-		$prog $@
-		looking=false
-	fi
-done
-if $looking; then
-	conkeror $@
-fi
+`pick -s conkeror iceweasel icecat firefox` "$@"
+exit $?