xS: parse project version from CMakeLists.txt

xC-gen-proto.awk

@@ -100,12 +100,12 @@ function nexttoken() {
 			Token = substr($0, 1, RLENGTH)
 			$0 = substr($0, RLENGTH + 1)
 			return Token
-		} else if (/./) {
+		} else if ($0) {
 			Token = substr($0, 1, 1)
 			$0 = substr($0, 2)
 			return Token
 		}
-	} while (/./ || getline > 0)
+	} while ($0 || getline > 0)
 	Token = ""
 	return Token
 }

xS/Makefile

@@ -2,11 +2,15 @@
 .SUFFIXES:
 AWK = env LC_ALL=C awk
 
-outputs = xS xS-replies.go
+outputs = xS xS-version.go xS-replies.go
 all: $(outputs)
 
-xS: xS.go xS-replies.go
+xS: xS.go xS-version.go xS-replies.go
 	go build -o $@
+xS-version.go: ../liberty/tools/cmake-parser.awk \
+	xS-gen-version.awk ../CMakeLists.txt
+	$(AWK) -f ../liberty/tools/cmake-parser.awk \
+		-f xS-gen-version.awk ../CMakeLists.txt > $@
 xS-replies.go: xS-gen-replies.awk xS-replies
 	$(AWK) -f xS-gen-replies.awk xS-replies > $@
 clean:

xS/xS-gen-version.awk

@@ -0,0 +1,14 @@
+# xS-gen-version.awk: extract version information from the CMake script
+#
+# Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name>
+# SPDX-License-Identifier: 0BSD
+
+Command == "project" {
+	for (i = 2; i in Args; i++)
+		if (Args[i] == "VERSION") {
+			print "package main"
+			print ""
+			print "const projectVersion = `" Args[++i] "`"
+			exit
+		}
+}

xS/xS.go

@@ -40,13 +40,9 @@ import (
 	"time"
 )
 
-var debugMode = false
+const projectName = "xS"
 
-const (
-	projectName = "xS"
-	// TODO: Consider using the same version number for all subprojects.
-	projectVersion = "0"
-)
+var debugMode = false
 
 // --- Logging -----------------------------------------------------------------