Added build script and version command

internal/cli/root.go

@@ -42,6 +42,7 @@ schema patch in order, and generates Go structs from the result.`,
 	pf.BoolVarP(&opts.quiet, "quiet", "q", false, "don't print notes and warnings")
 
 	root.AddCommand(
+		newVersionCmd(),
 		newGenerateCmd(opts),
 		newResolveCmd(opts),
 		newSchemaCmd(opts),

internal/cli/version.go

@@ -0,0 +1,26 @@
+package cli
+
+import (
+	"fmt"
+
+	"git.avsdev.uk/Go/go-ocds/internal/version"
+	"github.com/spf13/cobra"
+)
+
+func newVersionCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "version",
+		Short: "Print version information",
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Printf("ocdsgen - %s\n", version.Version)
+			if version.BuildTime != "unknown" {
+				fmt.Printf("Built: %s\n", version.BuildTime)
+			}
+			if version.GitCommit != "unknown" {
+				fmt.Printf("Commit: %s\n", version.GitCommit)
+			}
+		},
+	}
+
+	return cmd
+}

internal/version/version.go

@@ -0,0 +1,8 @@
+package version
+
+// Version information (set at build time with -ldflags)
+var (
+	Version   = "dev"
+	BuildTime = "unknown"
+	GitCommit = "unknown"
+)

scripts/build.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+# Build script for ocdsgen release
+
+set -euo pipefail
+
+BUILD_DIR="build"
+RELEASE_DIR="release"
+DO_RELEASE=0
+
+if [[ $* == *--release* ]]; then
+    DO_RELEASE=1
+fi
+
+BUILD_TIME=$(date -u '+%Y-%m-%d_%H:%M:%S')
+GIT_COMMIT=
+VERSION=$(git describe --tags --abbrev=0 2>/dev/null || echo 'unknown')
+VERSION_TAG=$(git describe --tags 2>/dev/null || echo 'unknown')
+
+if [ "$VERSION" != "$VERSION_TAG" ]; then
+    echo "Dirty commits detected, marking as development build"
+    GIT_COMMIT=$(git rev-parse HEAD 2>/dev/null || echo 'unknown')
+    GIT_COMMIT_SHORT=$(git rev-parse --short HEAD 2>/dev/null || echo 'unknown')
+    VERSION="${VERSION}.${GIT_COMMIT_SHORT}"
+
+    DO_RELEASE=0
+    if [[ $* == *--release* && $* == *--force* ]]; then
+        echo "Forcing release build anyway"
+        DO_RELEASE=1
+    fi
+fi
+
+LD_FLAGS=${LD_FLAGS:-""}
+LD_FLAGS="$LD_FLAGS -X git.avsdev.uk/Go/go-ocds/internal/version.Version=${VERSION}"
+if [[ $DO_RELEASE -ne 1 ]]; then
+    LD_FLAGS="$LD_FLAGS -X git.avsdev.uk/Go/go-ocds/internal/version.BuildTime=${BUILD_TIME}"
+fi
+if [ "$GIT_COMMIT" != "" ]; then
+    LD_FLAGS="$LD_FLAGS -X git.avsdev.uk/Go/go-ocds/internal/version.GitCommit=${GIT_COMMIT}"
+fi
+
+# Build binary with version info
+go build \
+    -ldflags="$LD_FLAGS" \
+    -trimpath \
+    -o $BUILD_DIR/ocdsgen-$VERSION \
+    ./cmd/ocdsgen
+
+echo "Built $BUILD_DIR/ocdsgen-$VERSION"
+
+# If proper release, copy to output directory for packaging
+if [[ $DO_RELEASE -eq 1 ]]; then
+    install -DT $BUILD_DIR/ocdsgen-$VERSION $RELEASE_DIR/ocdsgen
+    ARCH=`dpkg --print-architecture`
+    tar -czf $RELEASE_DIR/ocdsgen-$VERSION-$ARCH.tar.gz \
+      --transform "s,^$RELEASE_DIR/,ocdsgen-$VERSION-$ARCH/," \
+      $RELEASE_DIR/ocdsgen
+    echo "Installed $RELEASE_DIR/ocdsgen"
+fi