|
| 1 | +name: Resolve PHP Version |
| 2 | +description: Resolve the PHP version and test matrix from composer.lock or composer.json. |
| 3 | + |
| 4 | +outputs: |
| 5 | + php-version: |
| 6 | + description: Resolved PHP version used by setup-php. |
| 7 | + value: ${{ steps.resolve.outputs.php-version }} |
| 8 | + php-version-source: |
| 9 | + description: Source used to resolve the PHP version. |
| 10 | + value: ${{ steps.resolve.outputs.php-version-source }} |
| 11 | + test-matrix: |
| 12 | + description: JSON matrix of supported PHP minors starting from the inferred minimum. |
| 13 | + value: ${{ steps.resolve.outputs.test-matrix }} |
| 14 | + warning: |
| 15 | + description: Warning emitted when the workflow falls back to the default PHP version. |
| 16 | + value: ${{ steps.resolve.outputs.warning }} |
| 17 | + |
| 18 | +runs: |
| 19 | + using: composite |
| 20 | + steps: |
| 21 | + - name: Resolve workflow PHP version |
| 22 | + id: resolve |
| 23 | + shell: bash |
| 24 | + run: | |
| 25 | + python3 <<'PY' |
| 26 | + from __future__ import annotations |
| 27 | +
|
| 28 | + import json |
| 29 | + import os |
| 30 | + import re |
| 31 | + from pathlib import Path |
| 32 | +
|
| 33 | + SUPPORTED_MINORS = ["8.3", "8.4", "8.5"] |
| 34 | + DEFAULT_PHP_VERSION = "8.3" |
| 35 | +
|
| 36 | + def version_to_tuple(version: str) -> tuple[int, int]: |
| 37 | + major, minor = version.split(".") |
| 38 | + return int(major), int(minor) |
| 39 | +
|
| 40 | + def normalize_minor(version: str) -> str | None: |
| 41 | + match = re.match(r"^\s*v?(8)\.(\d+)(?:\.\d+)?(?:\.\*)?\s*$", version) |
| 42 | + if match is None: |
| 43 | + return None |
| 44 | + return f"{match.group(1)}.{match.group(2)}" |
| 45 | +
|
| 46 | + def next_supported_minor(version: str) -> str | None: |
| 47 | + if version not in SUPPORTED_MINORS: |
| 48 | + return None |
| 49 | + index = SUPPORTED_MINORS.index(version) + 1 |
| 50 | + if index >= len(SUPPORTED_MINORS): |
| 51 | + major, minor = version_to_tuple(version) |
| 52 | + return f"{major}.{minor + 1}" |
| 53 | + return SUPPORTED_MINORS[index] |
| 54 | +
|
| 55 | + def infer_clause_lower_bound(clause: str) -> str | None: |
| 56 | + tokens = re.findall(r"(\^|~|>=|>|<=|<|==|=)?\s*v?(8\.\d+(?:\.\d+)?(?:\.\*)?)", clause) |
| 57 | + lower_bounds: list[str] = [] |
| 58 | + for operator, version in tokens: |
| 59 | + normalized = normalize_minor(version) |
| 60 | + if normalized is None: |
| 61 | + continue |
| 62 | + if operator in ("", "=", "==", "^", "~", ">="): |
| 63 | + lower_bounds.append(normalized) |
| 64 | + continue |
| 65 | + if operator == ">": |
| 66 | + next_minor = next_supported_minor(normalized) |
| 67 | + if next_minor is not None: |
| 68 | + lower_bounds.append(next_minor) |
| 69 | + if not lower_bounds: |
| 70 | + return None |
| 71 | + return max(lower_bounds, key=version_to_tuple) |
| 72 | +
|
| 73 | + def infer_minimum_supported_minor(requirement: str) -> str | None: |
| 74 | + clauses = [clause.strip() for clause in requirement.split("||")] |
| 75 | + lower_bounds = [ |
| 76 | + clause_lower_bound |
| 77 | + for clause in clauses |
| 78 | + if (clause_lower_bound := infer_clause_lower_bound(clause)) is not None |
| 79 | + ] |
| 80 | + if not lower_bounds: |
| 81 | + return None |
| 82 | + return min(lower_bounds, key=version_to_tuple) |
| 83 | +
|
| 84 | + def resolve_from_lock(composer_lock: Path) -> tuple[str | None, str | None]: |
| 85 | + if not composer_lock.exists(): |
| 86 | + return None, None |
| 87 | + try: |
| 88 | + payload = json.loads(composer_lock.read_text()) |
| 89 | + except json.JSONDecodeError: |
| 90 | + return None, "composer.lock exists but could not be parsed" |
| 91 | + platform_overrides = payload.get("platform-overrides") or {} |
| 92 | + platform_php = platform_overrides.get("php") |
| 93 | + if isinstance(platform_php, str): |
| 94 | + resolved = normalize_minor(platform_php) |
| 95 | + if resolved is not None: |
| 96 | + return resolved, "composer.lock platform-overrides.php" |
| 97 | + return None, "composer.lock platform-overrides.php is not a supported PHP version" |
| 98 | + return None, None |
| 99 | +
|
| 100 | + def resolve_from_json(composer_json: Path) -> tuple[str | None, str | None]: |
| 101 | + if not composer_json.exists(): |
| 102 | + return None, "composer.json does not exist" |
| 103 | + try: |
| 104 | + payload = json.loads(composer_json.read_text()) |
| 105 | + except json.JSONDecodeError: |
| 106 | + return None, "composer.json could not be parsed" |
| 107 | + config_platform_php = (((payload.get("config") or {}).get("platform") or {}).get("php")) |
| 108 | + if isinstance(config_platform_php, str): |
| 109 | + resolved = normalize_minor(config_platform_php) |
| 110 | + if resolved is not None: |
| 111 | + return resolved, "composer.json config.platform.php" |
| 112 | + return None, "composer.json config.platform.php is not a supported PHP version" |
| 113 | + require_php = ((payload.get("require") or {}).get("php")) |
| 114 | + if isinstance(require_php, str): |
| 115 | + resolved = infer_minimum_supported_minor(require_php) |
| 116 | + if resolved is not None: |
| 117 | + return resolved, "composer.json require.php" |
| 118 | + return None, "composer.json require.php could not be resolved safely" |
| 119 | + return None, None |
| 120 | +
|
| 121 | + def resolve_php_version() -> tuple[str, str, str | None]: |
| 122 | + resolved, source = resolve_from_lock(Path("composer.lock")) |
| 123 | + if resolved is None: |
| 124 | + resolved, source = resolve_from_json(Path("composer.json")) |
| 125 | + if resolved is None: |
| 126 | + return DEFAULT_PHP_VERSION, "fallback", "No reliable PHP version source was found. Falling back to 8.3." |
| 127 | + if resolved not in SUPPORTED_MINORS: |
| 128 | + return DEFAULT_PHP_VERSION, "fallback", ( |
| 129 | + f"Resolved PHP version {resolved} from {source} is outside the supported CI policy. Falling back to 8.3." |
| 130 | + ) |
| 131 | + return resolved, source or "fallback", None |
| 132 | +
|
| 133 | + resolved_version, source, warning = resolve_php_version() |
| 134 | + matrix_versions = [version for version in SUPPORTED_MINORS if version_to_tuple(version) >= version_to_tuple(resolved_version)] |
| 135 | + matrix = json.dumps({"php-version": matrix_versions}, separators=(",", ":")) |
| 136 | +
|
| 137 | + print(f"Resolved PHP version source: {source}") |
| 138 | + print(f"Resolved PHP version: {resolved_version}") |
| 139 | + print(f"Resolved PHP test matrix: {matrix_versions}") |
| 140 | + if warning: |
| 141 | + print(f"Warning: {warning}") |
| 142 | +
|
| 143 | + github_output = os.environ["GITHUB_OUTPUT"] |
| 144 | + with open(github_output, "a", encoding="utf-8") as handle: |
| 145 | + handle.write(f"php-version={resolved_version}\n") |
| 146 | + handle.write(f"php-version-source={source}\n") |
| 147 | + handle.write(f"test-matrix={matrix}\n") |
| 148 | + handle.write(f"warning={warning or ''}\n") |
| 149 | + PY |
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