From: Andre Noll <maan@systemlinux.org>
Date: Thu, 28 Jun 2012 00:51:28 +0000 (+0200)
Subject: command_util: Avoid empty output lines.
X-Git-Tag: v0.4.11~10^2~6
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=3792a24ac9bb2ee3ea1505c18b3b9ff27db47287

command_util: Avoid empty output lines.

Additional empty output lines do not matter for the generated C code or
the function declarations in the header files.  However, a subsequent
commit changes command_util.sh to  generate a preprocessor macro for
the header file, and there we can not afford empty lines unless they
end with a backslash to continue the line.

This patch makes sure that no superfluous newlines are printed in
the output.
---

diff --git a/command_util.sh b/command_util.sh
index 563ab1a2..b3b8804c 100755
--- a/command_util.sh
+++ b/command_util.sh
@@ -198,11 +198,10 @@ make_proto()
 	for source_file in $source_files; do
 		match=$(grep "^\(__noreturn \)*int com_$name_txt(" $source_file | head -n 1 | sed -e 's/$/;/1')
 		if test -n "$match"; then
-			result="$result $match$CR"
+			result="$result$match$CR"
 			break
 		fi
 	done
-	echo
 }
 
 make_array_member()
@@ -229,11 +228,15 @@ make_array_member()
 
 make_completion()
 {
-	result="  {.name = \"$name_txt\", .completer = ${name_txt}_completer}, \\"
+	local CR='
+'
+	result="  {.name = \"$name_txt\", .completer = ${name_txt}_completer}, \\$CR"
 }
 
 template_loop()
 {
+	local loop_result=
+
 	local t_name="$name_txt"
 	local t_perms="$perms_txt"
 	local t_desc="$desc_txt"
@@ -251,11 +254,10 @@ template_loop()
 		usage_txt=$(echo "$t_usage" | $sed_cmd)
 		help_txt=$(printf "%s\n" "$t_help" | $sed_cmd)
 		prototype=$(echo "$template_prototype" | $sed_cmd)
-		result=
 		$1
-		echo "$result"
+		loop_result="$loop_result$result"
 	done
-
+	result="$loop_result"
 }
 
 com_c_file()
@@ -273,10 +275,11 @@ com_c_file()
 		fi
 		if test $template -eq 0; then
 			make_array_member
-			echo "$result"
+			printf "%s" "$result"
 			continue
 		fi
 		template_loop make_array_member
+		printf "%s" "$result"
 	done
 	echo '{.name = NULL}};'
 }
@@ -294,10 +297,11 @@ com_header()
 		fi
 		if test $template -eq 0; then
 			make_proto
-			echo "$result"
+			printf "%s" "$result"
 			continue
 		fi
 		template_loop make_proto
+		printf "%s" "$result"
 	done
 }
 
@@ -315,10 +319,11 @@ com_completion()
 		fi
 		if test $template -eq 0; then
 			make_completion
-			echo "$result"
+			printf "%s" "$result"
 			continue
 		fi
 		template_loop make_completion
+		printf "%s" "$result"
 	done
 	echo
 }