Enable --version flag, release script for automation

Author: grega

README.md

@@ -67,6 +67,7 @@ hdi a                  All sections
 
 ```
 -h, --help               Show help
+-v, --version            Show version
 -f, --full               Show surrounding prose, not just commands
     --raw                Plain markdown output (no colour, for piping)
     --ni, --no-interactive   Non-interactive (just print, no picker)
@@ -125,26 +126,16 @@ This outputs `demo.gif` from the tape file.
 
 ## Publishing a new release
 
-1. Tag the release and push:
+The `release` script bumps the version in `hdi`, commits, tags, pushes, and prints the sha256 for the Homebrew tap:
 
 ```bash
-git tag v0.x.0
-git push origin --tags
+./release patch          # 0.1.0 → 0.1.1
+./release minor          # 0.1.0 → 0.2.0
+./release major          # 0.1.0 → 1.0.0
+./release 1.2.3          # explicit version
 ```
 
-The `release` workflow will automatically build and publish a new release to GitHub when the tag is pushed.
-
-2. Get the sha256 of the release tarball:
-
-```bash
-curl -sL https://github.com/grega/hdi/archive/refs/tags/v0.x.0.tar.gz | shasum -a 256 | awk '{print $1}'
-```
-
-3. Update the formula in the [homebrew-tap](https://github.com/grega/homebrew-tap) repo (`Formula/hdi.rb`):
-   - Set `url` to the new tag's tarball URL
-   - Set `sha256` to the value from step 2
-
-4. Push the tap repo. Users can now get the update via `brew upgrade grega/tap/hdi`.
+The `release` workflow will automatically build and publish a GitHub release when the tag is pushed. The script then prints the `url` and `sha256` values to update in the [homebrew-tap](https://github.com/grega/homebrew-tap) repo (`hdi.rb`).
 
 ## License
 

hdi

@@ -22,6 +22,9 @@
 
 set -euo pipefail
 
+# ── Version ─────────────────────────────────────────────────────────────────
+VERSION="0.5.0"
+
 # ── Defaults ─────────────────────────────────────────────────────────────────
 MODE="default"
 FULL=false
@@ -45,6 +48,10 @@ for arg in "$@"; do
     --full|-f)              FULL=true ;;
     --raw)                  RAW=true; INTERACTIVE="no" ;;
     --no-interactive|--ni)  INTERACTIVE="no" ;;
+    --version|-v)
+      echo "hdi $VERSION"
+      exit 0
+      ;;
     --help|-h)
       sed -n '2,/^$/{ s/^# \{0,1\}//; p; }' "$0"
       exit 0

release

@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+# release — bump version, tag, push, and print the sha256 for the Homebrew tap.
+#
+# Usage:
+#   ./release 0.6.0
+#   ./release patch     (0.5.0 → 0.5.1)
+#   ./release minor     (0.5.0 → 0.6.0)
+#   ./release major     (0.5.0 → 1.0.0)
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+HDI="$SCRIPT_DIR/hdi"
+
+# ── Read current version ────────────────────────────────────────────────────
+
+current=$(grep -m1 '^VERSION=' "$HDI" | sed 's/VERSION="//;s/"//')
+
+if [[ -z "$current" ]]; then
+  echo "Error: could not read VERSION from hdi" >&2
+  exit 1
+fi
+
+# ── Resolve new version ─────────────────────────────────────────────────────
+
+if [[ -z "${1:-}" ]]; then
+  echo "Usage: ./release <version|patch|minor|major>" >&2
+  echo "Current version: $current" >&2
+  exit 1
+fi
+
+IFS='.' read -r major minor patch <<< "$current"
+
+case "$1" in
+  patch) new="$major.$minor.$((patch + 1))" ;;
+  minor) new="$major.$((minor + 1)).0" ;;
+  major) new="$((major + 1)).0.0" ;;
+  *)     new="$1" ;;
+esac
+
+tag="v$new"
+
+# ── Safety checks ───────────────────────────────────────────────────────────
+
+if [[ "$new" == "$current" ]]; then
+  echo "Error: version is already $current" >&2
+  exit 1
+fi
+
+if git tag -l "$tag" | grep -q .; then
+  echo "Error: tag $tag already exists" >&2
+  exit 1
+fi
+
+if [[ -n "$(git status --porcelain)" ]]; then
+  echo "Error: working tree is not clean — commit or stash first" >&2
+  exit 1
+fi
+
+# ── Bump, commit, tag, push ─────────────────────────────────────────────────
+
+echo "Releasing: $current → $new ($tag)"
+
+sed -i.bak "s/^VERSION=\"$current\"/VERSION=\"$new\"/" "$HDI" && rm -f "$HDI.bak"
+git add hdi
+git commit -m "Bump version to $new"
+git tag "$tag"
+git push origin HEAD --tags
+
+# ── Print sha256 for Homebrew tap ───────────────────────────────────────────
+
+echo ""
+echo "Waiting for tarball to be available..."
+tarball_url="https://github.com/grega/hdi/archive/refs/tags/$tag.tar.gz"
+
+# Retry a few times — GitHub may take a moment after the push
+for i in 1 2 3 4 5; do
+  sha=$(curl -sfL "$tarball_url" | shasum -a 256 | awk '{print $1}')
+  if [[ -n "$sha" ]]; then
+    echo ""
+    echo "Update homebrew-tap Formula/hdi.rb:"
+    echo "  url  \"$tarball_url\""
+    echo "  sha256 \"$sha\""
+    exit 0
+  fi
+  sleep 2
+done
+
+echo "Warning: could not fetch tarball — check $tarball_url manually" >&2
+exit 1