Move Linux client & common packages into a public repo.

version/.gitignore

@@ -0,0 +1,6 @@
+long.txt
+short.txt
+version.h
+version.xcconfig
+ver.go
+version

version/GENERATE.go

@@ -0,0 +1,8 @@
+// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Placeholder that indicates this directory is a valid go package,
+// but that redo must 'redo all' in this directory before it can
+// be imported.
+package version

version/all.do

@@ -0,0 +1,2 @@
+redo-ifchange ver.go version.xcconfig version.h
+

version/clean.do

@@ -0,0 +1 @@
+rm -f *~ .*~ long.txt short.txt version.xcconfig ver.go version.h version

version/long.txt.do

@@ -0,0 +1,10 @@
+ver=$(git describe | sed 's/^v//')
+if [ "$ver" = "${ver%-*}" ]; then
+	# no sub-version. ie. it's 0.05 and not 0.05-341
+	# so add a sub-version.
+	ver=$ver-0
+fi
+echo "$ver" >$3
+
+redo-always
+redo-stamp <$3

version/short.txt.do

@@ -0,0 +1,18 @@
+redo-ifchange long.txt
+read -r LONGVER junk <long.txt
+
+# Convert a version like "0.92-98-g123456" into "0.92-98".
+# Sometimes the version is just "0.92-0", in which case we leave it as is.
+case $LONGVER in
+	*-*-*)
+		echo "${LONGVER%-*}" >$3
+		;;
+	*-*)
+		echo "$LONGVER" >$3
+		;;
+	*)
+		echo "Fatal: long version in invalid format." >&2
+		exit 44
+esac
+
+redo-stamp <$3

version/ver.go.do

@@ -0,0 +1,8 @@
+redo-ifchange long.txt short.txt ver.go.in
+
+read -r LONGVER <long.txt
+read -r SHORTVER <short.txt
+
+sed -e "s/{LONGVER}/$LONGVER/g" \
+    -e "s/{SHORTVER}/$SHORTVER/g" \
+    <ver.go.in >$3

version/ver.go.in

@@ -0,0 +1,4 @@
+package version
+
+const LONG = "{LONGVER}"
+const SHORT = "{SHORTVER}"

version/version.h.do

@@ -0,0 +1,11 @@
+redo-ifchange long.txt short.txt
+read -r long <long.txt
+read -r short <short.txt
+
+# get it into "major.minor.patch" format
+ver=$(echo "$ver" | sed -e 's/-/./')
+
+(
+	printf '#define TAILSCALE_VERSION_LONG "%s"\n' "$long"
+	printf '#define TAILSCALE_VERSION_SHORT "%s"\n' "$short"
+) >$3

version/version.xcconfig.do

@@ -0,0 +1,17 @@
+redo-ifchange short.txt
+read -r ver <short.txt
+
+# get it into "major.minor.patch" format
+ver=$(echo "$ver" | sed -e 's/-/./')
+
+# CFBundleShortVersionString: the "short name" used in the App Store.
+# eg. 0.92.98
+echo "VERSION_NAME = $ver" >$3
+# CFBundleVersion: the build number. Needs to increment each release.
+# start counting at 100 because we submitted using raw build numbers
+# before (and Apple doesn't let you start over).
+# eg. 100.92.98
+
+major=$((${ver%%.*} + 100))
+minor=${ver#*.}
+echo "VERSION_ID = $major.$minor" >>$3