small fixes

lib/efg.sh

@@ -52,6 +52,7 @@ set_efg_opts() {
 			INPUT="${OPTARG}"
 			;;
 		p)
+			missing_cmd gnuplot && return 1
 			PLOT=true
 			;;
 		l)

lib/encode.sh

@@ -235,7 +235,7 @@ set_encode_opts() {
 		C)
 			if ! is_positive_integer "${OPTARG}" || test ${OPTARG} -gt 63; then
 				echo_fail "${OPTARG} is not a valid CRF value (0-63)"
-				usage
+				encode_usage
 				exit 1
 			fi
 			CRF="${OPTARG}"
@@ -278,7 +278,7 @@ set_encode_opts() {
 
 	if [[ ! -f ${INPUT} ]]; then
 		echo "${INPUT} does not exist"
-		efg_usage
+		encode_usage
 		return 1
 	fi
 

lib/utils.sh

@@ -103,18 +103,26 @@ dump_arr() {
 }
 
 has_cmd() {
-	local cmd="$1"
+	local cmds=("$@")
-	command -v "${cmd}" >/dev/null 2>&1
+	local rv=0
+	for cmd in "${cmds[@]}"; do
+		command -v "${cmd}" >/dev/null 2>&1 || rv=1
+	done
+
+	return ${rv}
 }
 
 missing_cmd() {
-	local cmd="$1"
+	local cmds=("$@")
-	rv=1
+	local rv=1
-	if ! has_cmd "${cmd}"; then
+	for cmd in "${cmds[@]}"; do
-		echo_warn "missing ${cmd}"
+		if ! has_cmd "${cmd}"; then
-		rv=0
+			echo_warn "missing ${cmd}"
-	fi
+			rv=0
-	return $rv
+		fi
+	done
+
+	return ${rv}
 }
 
 bash_dirname() {