From dfe87d16781ec2cc9f2b0924381a87a598e6e15d Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Fri, 12 Apr 2019 21:56:51 -0400
Subject: parse_control(): Drop user_data and require fields args

---
diff --git a/src/control.sh b/src/control.sh
index 283e3d4..f617856 100644
--- a/src/control.sh
+++ b/src/control.sh
@@ -43,9 +43,9 @@ parse_control()
 {
 	local file="${1}"
 	local field_cb="${2}"
-	local user_data="${3}"
-	shift 3
-	local check_fields=
+	local req_fields=" ${3} "
+	local opt_fields=" ${4} "
+	shift 4
 	local req_fields=
 	local opt_fields=
 	local got_fields=
@@ -55,14 +55,6 @@ parse_control()
 	local value=
 	local sep=
 
-	check_fields='false'
-	if [ ${#} -eq 2 ]; then
-		req_fields=" ${1} "
-		opt_fields=" ${2} "
-		shift 2
-		check_fields='true'
-	fi
-
 	got_fields=' '
 
 	line_nr=0
@@ -78,8 +70,8 @@ parse_control()
 				;;
 			[!\ ]*':'*)  # "Name: Value" line.
 				if [ -n "${name}" ]; then
-					if ! "${field_cb}" "${name}" "${value}"\
-							"${user_data}"; then
+					if ! "${field_cb}" "${name}" "${value}"
+					then
 						return 0
 					fi
 				fi
@@ -107,17 +99,14 @@ parse_control()
 						) ${req_fields#* ${name} }"
 					continue
 				esac
-				if ${check_fields}; then
-					case "${opt_fields}" in *" ${name} "*)
-						# Optional field.
-						continue
-					esac
-					# Unknown field.
-					_parse_control_error \
-						"${file}" "${line_nr}" \
-						'control_unknown_field' \
-						"${name}"
-				fi
+				case "${opt_fields}" in *" ${name} "*)
+					# Optional field.
+					continue
+				esac
+				# Unknown field.
+				_parse_control_error \
+					"${file}" "${line_nr}" \
+					'control_unknown_field' "${name}"
 				;;
 			' '*)  # Continuation line.
 				if [ -z "${name}" ]; then
@@ -135,22 +124,19 @@ parse_control()
 		EOF
 
 	if [ -n "${name}" ]; then
-		if ! "${field_cb}" "${name}" "${value}" "${user_data}"; then
+		if ! "${field_cb}" "${name}" "${value}"; then
 			return 0
 		fi
 	fi
 
-	if ${check_fields}; then
-		case "${req_fields}" in *[!\ ]*)
-			# Missing required control fields.
-			sep="$(get_msg 'list_item_separator')"
-			req_fields="$(printf "%s${sep}" ${req_fields}; \
-				printf 'x')"
-			req_fields="${req_fields%${sep}x}"
-			_parse_control_error "${file}" '0' \
-				'control_missing_fields' "${req_fields}"
-		esac
-	fi
+	case "${req_fields}" in *[!\ ]*)
+		# Missing required control fields.
+		sep="$(get_msg 'list_item_separator')"
+		req_fields="$(printf "%s${sep}" ${req_fields}; printf 'x')"
+		req_fields="${req_fields%${sep}x}"
+		_parse_control_error "${file}" '0' 'control_missing_fields' \
+			"${req_fields}"
+	esac
 
 	return 0
 }
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