From 824797b55596d45589e5ca49ac906639f6e49f53 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 08 Dec 2020 01:29:23 -0500
Subject: ob-gencontrol: Use an FD for control files

---
diff --git a/src/ob-gencontrol.sh b/src/ob-gencontrol.sh
index b54c4b3..5a8aa40 100644
--- a/src/ob-gencontrol.sh
+++ b/src/ob-gencontrol.sh
@@ -72,8 +72,9 @@ gen_control_src()
 	binary="src:${OPK_SOURCE}"
 
 	mkdir -p -- "${binary}.control"
+	exec 3>"${binary}.control/control"
 
-	cat >"${binary}.control/control" <<-EOF
+	cat >&3 <<-EOF
 		Package: src:${OPK_SOURCE}
 		Source: ${OPK_SOURCE}
 		Binary:$(printf '%s\n' $(ob_get_binary_packages) | \
@@ -91,12 +92,10 @@ gen_control_src()
 			continue
 		fi
 		value="$(ob_substvars "${value}")"
-		printf '%s: %s\n' "${name}" "${value}" | \
-			sed 's/[, ]*$//' \
-			>>"${binary}.control/control"
+		printf '%s: %s\n' "${name}" "${value}" | sed 's/[, ]*$//' >&3
 	done
 
-	cat >>"${binary}.control/control" <<-EOF
+	cat >&3 <<-EOF
 		Installed-Size: $(calc_inst_size "src:${OPK_SOURCE}")
 		Format: $(ob_get_source_parameter 'Format')
 		Description: ${OPK_SOURCE} source package
@@ -104,10 +103,11 @@ gen_control_src()
 
 	homepage="$(ob_get_source_parameter 'Homepage')"
 	if [ -n "${homepage}" ]; then
-		printf '%s: %s\n' 'Homepage' "${homepage}" \
-			>>"${binary}.control/control"
+		printf '%s: %s\n' 'Homepage' "${homepage}" >&3
 	fi
 
+	exec 3>&-
+
 	return 0
 }
 
@@ -124,8 +124,9 @@ gen_control_bin()
 	local homepage=
 
 	mkdir -p -- "${binary}.control"
+	exec 3>"${binary}.control/control"
 
-	cat >"${binary}.control/control" <<-EOF
+	cat >&3 <<-EOF
 		Package: $(ob_qualify_package_name "${binary}" \
 			"${OPK_HOST_ARCH}")
 		Source: ${OPK_SOURCE}
@@ -135,11 +136,11 @@ gen_control_bin()
 		EOF
 	value="$(ob_get_binary_parameter "${binary}" 'Section')"
 	if [ -n "${value}" ]; then
-		cat >>"${binary}.control/control" <<-EOF
+		cat >&3 <<-EOF
 			Section: ${value}
 			EOF
 	fi
-	cat >>"${binary}.control/control" <<-EOF
+	cat >&3 <<-EOF
 		Maintainer: $(ob_get_source_parameter 'Maintainer' | \
 			tr '\n' ' ')
 		EOF
@@ -168,21 +169,21 @@ gen_control_bin()
 				value="$(ob_substvars "${value}" "${binary}")"
 				;;
 		esac
-		printf '%s: %s\n' "${name}" "${value}" | sed 's/[, ]*$//' \
-			>>"${binary}.control/control"
+		printf '%s: %s\n' "${name}" "${value}" | sed 's/[, ]*$//' >&3
 	done
 
-	cat >>"${binary}.control/control" <<-EOF
+	cat >&3 <<-EOF
 		Installed-Size: $(calc_inst_size "${binary}")
 		Description:$(printf '%s' "${desc}" | sed 's/^/ /')
 		EOF
 
 	homepage="$(ob_get_source_parameter 'Homepage')"
 	if [ -n "${homepage}" ]; then
-		printf '%s: %s\n' 'Homepage' "${homepage}" \
-			>>"${binary}.control/control"
+		printf '%s: %s\n' 'Homepage' "${homepage}" >&3
 	fi
 
+	exec 3>&-
+
 	return 0
 }
 
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