Add developer tool to update versions

Author: Bromeon

tools/update-version.sh

@@ -0,0 +1,57 @@
+# Small utility to run update crate versions
+# Used by godot-rust developers
+
+# No args specified: do everything
+if [ "$#" -eq 0 ]; then
+    echo "Usage: update-version.sh <newVersion>"
+    exit 1
+fi
+
+# --help menu
+args=("$@")
+for arg in "${args[@]}"; do
+    if [ "$arg" == "--help" ]; then
+        echo "Usage: update-version.sh <newVersion>"
+        echo ""
+        echo "Replaces currently published version with <newVersion>".
+        echo "Does not git commit."
+        exit 0
+    fi
+done
+
+# Uncommitted changes, see https://stackoverflow.com/a/3879077
+#if git diff --quiet --exit-code; then
+git diff-index --quiet HEAD -- || {
+    echo "Repo contains uncommitted changes; make sure working tree is clean."
+    exit 1
+}
+
+# https://stackoverflow.com/a/11114547
+scriptFile=$(realpath "$0")
+scriptPath=$(dirname "$scriptFile")
+
+newVersion="${args[0]}"
+oldVersion=$(grep -Po '^version = "\K[^"]*' "$scriptPath/../gdnative/Cargo.toml")
+
+publishedCrates=(
+    "impl/proc-macros"
+    "gdnative-sys"
+    "gdnative-derive"
+    "gdnative-core"
+    "bindings-generator"
+    "gdnative-bindings"
+    "gdnative-async"
+    "gdnative"
+)
+
+for crate in "${publishedCrates[@]}"; do
+    # Don't just replace version string itself -- the following only replaces the crate's own version
+    # (with 'version = "1.2.3"') and dependencies with "=1.2.3", which makes false positives unlikely
+    sed -i "s!version = \"${oldVersion}\"!version = \"${newVersion}\"!g" "$scriptPath/../$crate/Cargo.toml" || exit 2
+    sed -i "s!\"=${oldVersion}\"!\"=${newVersion}\"!g" "$scriptPath/../$crate/Cargo.toml" || exit 2
+done
+
+git commit -am "Update godot-rust version: $oldVersion -> $newVersion" || exit 2
+git tag "$newVersion" || exit 2
+
+echo "Updated version $oldVersion -> $newVersion"