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| 1 | +#!/usr/bin/env bash |
| 2 | +set -euo pipefail |
| 3 | + |
| 4 | +SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" |
| 5 | +BUN_VERSION="1.3.13" |
| 6 | +ENTRY_SCRIPT="router_runtime.js" |
| 7 | +REQUEST_TIMEOUT=121 |
| 8 | + |
| 9 | +# ── Early exit if bun is already on PATH ────────────────────────── |
| 10 | +if command -v bun &>/dev/null; then |
| 11 | + exit 0 |
| 12 | +fi |
| 13 | + |
| 14 | +# ── musl / Alpine detection ─────────────────────────────────────── |
| 15 | +is_alpine_or_musl() { |
| 16 | + if command -v ldd &>/dev/null; then |
| 17 | + # ldd may print version info to stdout *or* stderr |
| 18 | + if ldd --version 2>&1 | grep -qi musl; then |
| 19 | + return 0 |
| 20 | + fi |
| 21 | + fi |
| 22 | + if [[ -f /etc/os-release ]] && grep -qi 'alpine' /etc/os-release; then |
| 23 | + return 0 |
| 24 | + fi |
| 25 | + return 1 |
| 26 | +} |
| 27 | + |
| 28 | +# ── Platform / arch → asset name ────────────────────────────────── |
| 29 | +resolve_asset() { |
| 30 | + local kernel arch key |
| 31 | + kernel="$(uname -s)" |
| 32 | + arch="$(uname -m)" |
| 33 | + |
| 34 | + case "$kernel" in |
| 35 | + Linux) kernel="linux" ;; |
| 36 | + Darwin) kernel="darwin" ;; |
| 37 | + *) echo "Unsupported OS: $kernel" >&2; exit 1 ;; |
| 38 | + esac |
| 39 | + |
| 40 | + case "$arch" in |
| 41 | + x86_64|amd64) arch="x64" ;; |
| 42 | + aarch64|arm64) arch="arm64" ;; |
| 43 | + *) echo "Unsupported architecture: $arch" >&2; exit 1 ;; |
| 44 | + esac |
| 45 | + |
| 46 | + key="${kernel}-${arch}" |
| 47 | + |
| 48 | + case "$key" in |
| 49 | + linux-arm64) echo "bun-linux-aarch64" ;; |
| 50 | + linux-x64) |
| 51 | + if is_alpine_or_musl; then |
| 52 | + echo "bun-linux-x64-musl-baseline" |
| 53 | + else |
| 54 | + echo "bun-linux-x64-baseline" |
| 55 | + fi |
| 56 | + ;; |
| 57 | + darwin-arm64) echo "bun-darwin-aarch64" ;; |
| 58 | + darwin-x64) echo "bun-darwin-x64" ;; |
| 59 | + *) echo "Unsupported platform/arch: $key" >&2; exit 1 ;; |
| 60 | + esac |
| 61 | +} |
| 62 | + |
| 63 | +# ── Download (curl preferred, wget fallback) ────────────────────── |
| 64 | +download_file() { |
| 65 | + local url="$1" dest="$2" |
| 66 | + |
| 67 | + if command -v curl &>/dev/null; then |
| 68 | + curl -fSL --max-time "$REQUEST_TIMEOUT" -o "$dest" "$url" |
| 69 | + elif command -v wget &>/dev/null; then |
| 70 | + wget -q --timeout="$REQUEST_TIMEOUT" -O "$dest" "$url" |
| 71 | + else |
| 72 | + echo "Error: neither curl nor wget is available" >&2 |
| 73 | + exit 1 |
| 74 | + fi |
| 75 | +} |
| 76 | + |
| 77 | +# ── Extract a single entry from a zip ───────────────────────────── |
| 78 | +extract_bun() { |
| 79 | + local zip_path="$1" entry="$2" out_dir="$3" |
| 80 | + |
| 81 | + if command -v unzip &>/dev/null; then |
| 82 | + unzip -ojq "$zip_path" "$entry" -d "$out_dir" |
| 83 | + elif command -v bsdtar &>/dev/null; then |
| 84 | + bsdtar -xf "$zip_path" -C "$out_dir" --strip-components=1 "$entry" |
| 85 | + elif command -v python3 &>/dev/null; then |
| 86 | + python3 -c " |
| 87 | +import zipfile, os, sys |
| 88 | +with zipfile.ZipFile(sys.argv[1]) as z: |
| 89 | + data = z.read(sys.argv[2]) |
| 90 | + dest = os.path.join(sys.argv[3], os.path.basename(sys.argv[2])) |
| 91 | + with open(dest, 'wb') as f: |
| 92 | + f.write(data) |
| 93 | +" "$zip_path" "$entry" "$out_dir" |
| 94 | + else |
| 95 | + echo "Error: no unzip, bsdtar, or python3 found to extract the archive" >&2 |
| 96 | + exit 1 |
| 97 | + fi |
| 98 | +} |
| 99 | + |
| 100 | +# ── Main ────────────────────────────────────────────────────────── |
| 101 | +ASSET="$(resolve_asset)" |
| 102 | +BIN_NAME="bun" |
| 103 | +URL="https://github.com/oven-sh/bun/releases/download/bun-v${BUN_VERSION}/${ASSET}.zip" |
| 104 | + |
| 105 | +TMP_DIR="$(mktemp -d)" |
| 106 | +ZIP_PATH="${TMP_DIR}/${ASSET}.zip" |
| 107 | +BIN_PATH="${TMP_DIR}/${BIN_NAME}" |
| 108 | + |
| 109 | +cleanup() { rm -rf "$TMP_DIR"; } |
| 110 | +trap cleanup EXIT |
| 111 | + |
| 112 | +download_file "$URL" "$ZIP_PATH" |
| 113 | +extract_bun "$ZIP_PATH" "${ASSET}/${BIN_NAME}" "$TMP_DIR" |
| 114 | +rm -f "$ZIP_PATH" |
| 115 | + |
| 116 | +chmod 755 "$BIN_PATH" |
| 117 | + |
| 118 | +cd "$SCRIPT_DIR" |
| 119 | +exec "$BIN_PATH" "${SCRIPT_DIR}/${ENTRY_SCRIPT}" |
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