|
| 1 | +#!/usr/bin/env bash |
| 2 | +set -euo pipefail |
| 3 | + |
| 4 | +if [ "$#" -ne 1 ]; then |
| 5 | + echo "usage: $0 <zig-version>" >&2 |
| 6 | + exit 1 |
| 7 | +fi |
| 8 | + |
| 9 | +version="$1" |
| 10 | + |
| 11 | +python_bin="${PYTHON:-python3}" |
| 12 | +if ! command -v "$python_bin" >/dev/null 2>&1; then |
| 13 | + python_bin="python" |
| 14 | +fi |
| 15 | +if ! command -v "$python_bin" >/dev/null 2>&1; then |
| 16 | + echo "python is required to install Zig" >&2 |
| 17 | + exit 1 |
| 18 | +fi |
| 19 | + |
| 20 | +runner_os="${RUNNER_OS:-$(uname -s)}" |
| 21 | +runner_arch="${RUNNER_ARCH:-$(uname -m)}" |
| 22 | + |
| 23 | +case "$runner_os" in |
| 24 | + Linux | linux) |
| 25 | + zig_os="linux" |
| 26 | + ;; |
| 27 | + Darwin | macOS) |
| 28 | + zig_os="macos" |
| 29 | + ;; |
| 30 | + Windows | MINGW* | MSYS* | CYGWIN*) |
| 31 | + zig_os="windows" |
| 32 | + ;; |
| 33 | + *) |
| 34 | + echo "unsupported runner OS: $runner_os" >&2 |
| 35 | + exit 1 |
| 36 | + ;; |
| 37 | +esac |
| 38 | + |
| 39 | +case "$runner_arch" in |
| 40 | + X64 | x86_64 | amd64) |
| 41 | + zig_arch="x86_64" |
| 42 | + ;; |
| 43 | + ARM64 | arm64 | aarch64) |
| 44 | + zig_arch="aarch64" |
| 45 | + ;; |
| 46 | + *) |
| 47 | + echo "unsupported runner architecture: $runner_arch" >&2 |
| 48 | + exit 1 |
| 49 | + ;; |
| 50 | +esac |
| 51 | + |
| 52 | +host_key="${zig_arch}-${zig_os}" |
| 53 | +tool_root="${RUNNER_TEMP:-${TMPDIR:-/tmp}}/nulltickets-zig" |
| 54 | +install_dir="${tool_root}/${version}/${host_key}" |
| 55 | +zig_bin="zig" |
| 56 | +if [ "$zig_os" = "windows" ]; then |
| 57 | + zig_bin="zig.exe" |
| 58 | +fi |
| 59 | + |
| 60 | +if [ ! -x "${install_dir}/${zig_bin}" ]; then |
| 61 | + mkdir -p "$(dirname "$install_dir")" |
| 62 | + |
| 63 | + zig_metadata="$( |
| 64 | + "$python_bin" - "$version" "$host_key" <<'PY' |
| 65 | +import json |
| 66 | +import sys |
| 67 | +import urllib.request |
| 68 | +
|
| 69 | +version = sys.argv[1] |
| 70 | +host_key = sys.argv[2] |
| 71 | +
|
| 72 | +with urllib.request.urlopen("https://ziglang.org/download/index.json") as response: |
| 73 | + data = json.load(response) |
| 74 | +
|
| 75 | +host = data.get(version, {}).get(host_key) |
| 76 | +if not host: |
| 77 | + raise SystemExit(f"missing Zig download metadata for version={version!r} host={host_key!r}") |
| 78 | +
|
| 79 | +archive_url = host.get("tarball") or host.get("zip") |
| 80 | +checksum = host.get("shasum") or "" |
| 81 | +if not archive_url: |
| 82 | + raise SystemExit(f"missing archive URL for version={version!r} host={host_key!r}") |
| 83 | +
|
| 84 | +print(archive_url) |
| 85 | +print(checksum) |
| 86 | +PY |
| 87 | + )" |
| 88 | + |
| 89 | + archive_url="$(printf '%s\n' "$zig_metadata" | sed -n '1p')" |
| 90 | + expected_sha="$(printf '%s\n' "$zig_metadata" | sed -n '2p')" |
| 91 | + if [ -z "$archive_url" ]; then |
| 92 | + echo "failed to resolve Zig download URL" >&2 |
| 93 | + exit 1 |
| 94 | + fi |
| 95 | + |
| 96 | + archive_name="${archive_url##*/}" |
| 97 | + archive_dir="$(mktemp -d "${RUNNER_TEMP:-${TMPDIR:-/tmp}}/zig-archive.XXXXXX")" |
| 98 | + archive_path="${archive_dir}/${archive_name}" |
| 99 | + extract_dir="$(mktemp -d "${RUNNER_TEMP:-${TMPDIR:-/tmp}}/zig-extract.XXXXXX")" |
| 100 | + trap 'rm -rf "$archive_dir"; rm -rf "$extract_dir"' EXIT |
| 101 | + |
| 102 | + curl -fsSL --retry 3 --retry-all-errors "$archive_url" -o "$archive_path" |
| 103 | + |
| 104 | + "$python_bin" - "$archive_path" "$expected_sha" <<'PY' |
| 105 | +import hashlib |
| 106 | +import sys |
| 107 | +
|
| 108 | +path = sys.argv[1] |
| 109 | +expected = sys.argv[2].strip().lower() |
| 110 | +if not expected: |
| 111 | + raise SystemExit(0) |
| 112 | +
|
| 113 | +digest = hashlib.sha256() |
| 114 | +with open(path, "rb") as handle: |
| 115 | + for chunk in iter(lambda: handle.read(1024 * 1024), b""): |
| 116 | + digest.update(chunk) |
| 117 | +
|
| 118 | +actual = digest.hexdigest().lower() |
| 119 | +if actual != expected: |
| 120 | + raise SystemExit(f"checksum mismatch for {path}: expected {expected}, got {actual}") |
| 121 | +PY |
| 122 | + |
| 123 | + "$python_bin" - "$archive_path" "$extract_dir" <<'PY' |
| 124 | +import pathlib |
| 125 | +import sys |
| 126 | +import tarfile |
| 127 | +import zipfile |
| 128 | +
|
| 129 | +archive = pathlib.Path(sys.argv[1]) |
| 130 | +destination = pathlib.Path(sys.argv[2]) |
| 131 | +destination.mkdir(parents=True, exist_ok=True) |
| 132 | +
|
| 133 | +def ensure_within_destination(relative_name: str) -> None: |
| 134 | + target = (destination / relative_name).resolve() |
| 135 | + if destination.resolve() not in target.parents and target != destination.resolve(): |
| 136 | + raise SystemExit(f"archive entry escapes destination: {relative_name}") |
| 137 | +
|
| 138 | +if archive.suffix == ".zip": |
| 139 | + with zipfile.ZipFile(archive) as handle: |
| 140 | + for member in handle.namelist(): |
| 141 | + ensure_within_destination(member) |
| 142 | + handle.extractall(destination) |
| 143 | +else: |
| 144 | + with tarfile.open(archive, "r:*") as handle: |
| 145 | + for member in handle.getnames(): |
| 146 | + ensure_within_destination(member) |
| 147 | + handle.extractall(destination) |
| 148 | +PY |
| 149 | + |
| 150 | + extracted_dir="$(find "$extract_dir" -mindepth 1 -maxdepth 1 -type d | head -n 1)" |
| 151 | + if [ -z "$extracted_dir" ]; then |
| 152 | + echo "failed to extract Zig archive: $archive_url" >&2 |
| 153 | + exit 1 |
| 154 | + fi |
| 155 | + |
| 156 | + rm -rf "$install_dir" |
| 157 | + mv "$extracted_dir" "$install_dir" |
| 158 | +fi |
| 159 | + |
| 160 | +if [ -n "${GITHUB_PATH:-}" ]; then |
| 161 | + printf '%s\n' "$install_dir" >> "$GITHUB_PATH" |
| 162 | +else |
| 163 | + echo "GITHUB_PATH is not set; add this directory to PATH manually: $install_dir" >&2 |
| 164 | +fi |
| 165 | + |
| 166 | +"${install_dir}/${zig_bin}" version |
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