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utils.ts

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import fs from 'fs';

import * as path from 'path';

import * as semver from 'semver';

export const IS_WINDOWS = process.platform === 'win32';

export const IS_LINUX = process.platform === 'linux';

export const WINDOWS_ARCHS = ['x86', 'x64'];

export const WINDOWS_PLATFORMS = ['win32', 'win64'];

const PYPY_VERSION_FILE = 'PYPY_VERSION';

export interface IPyPyManifestAsset {

filename: string;

arch: string;

platform: string;

download_url: string;

}

export interface IPyPyManifestRelease {

pypy_version: string;

python_version: string;

stable: boolean;

latest_pypy: boolean;

files: IPyPyManifestAsset[];

}

/** create Symlinks for downloaded PyPy

* It should be executed only for downloaded versions in runtime, because

* toolcache versions have this setup.

*/

export function createSymlinkInFolder(

folderPath: string,

sourceName: string,

targetName: string,

setExecutable = false

) {

const sourcePath = path.join(folderPath, sourceName);

const targetPath = path.join(folderPath, targetName);

if (fs.existsSync(targetPath)) {

return;

}

fs.symlinkSync(sourcePath, targetPath);

if (!IS_WINDOWS && setExecutable) {

fs.chmodSync(targetPath, '755');

}

}

export function validateVersion(version: string) {

return isNightlyKeyword(version) || Boolean(semver.validRange(version));

}

export function isNightlyKeyword(pypyVersion: string) {

return pypyVersion === 'nightly';

}

export function getPyPyVersionFromPath(installDir: string) {

return path.basename(path.dirname(installDir));

}

/**

* In tool-cache, we put PyPy to '<toolcache_root>/PyPy/<python_version>/x64'

* There is no easy way to determine what PyPy version is located in specific folder

* 'pypy --version' is not reliable enough since it is not set properly for preview versions

* "7.3.3rc1" is marked as '7.3.3' in 'pypy --version'

* so we put PYPY_VERSION file to PyPy directory when install it to VM and read it when we need to know version

* PYPY_VERSION contains exact version from 'versions.json'

*/

export function readExactPyPyVersionFile(installDir: string) {

let pypyVersion = '';

let fileVersion = path.join(installDir, PYPY_VERSION_FILE);

if (fs.existsSync(fileVersion)) {

pypyVersion = fs.readFileSync(fileVersion).toString();

}

return pypyVersion;

}

export function writeExactPyPyVersionFile(

installDir: string,

resolvedPyPyVersion: string

) {

const pypyFilePath = path.join(installDir, PYPY_VERSION_FILE);

fs.writeFileSync(pypyFilePath, resolvedPyPyVersion);

}

/**

* Python version should be specified explicitly like "x.y" (2.7, 3.6, 3.7)

* "3.x" or "3" are not supported

* because it could cause ambiguity when both PyPy version and Python version are not precise

*/

export function validatePythonVersionFormatForPyPy(version: string) {

const re = /^\d+\.\d+$/;

return re.test(version);

}