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install.js
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270 lines (230 loc) · 7.21 KB
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var os = require("os");
var path = require("path");
var zlib = require("zlib");
var tar;
var request;
var Promise = require("nodegit-promise");
var promisify = require("promisify-node");
var fse = promisify(require("fs-extra"));
var findParentDir = promisify(require('find-parent-dir'));
var exec = promisify(function(command, opts, callback) {
return require("child_process").exec(command, opts, callback);
});
var NODE_VERSION = Number(process.version.match(/^v(\d+\.\d+)/)[1]);
// If the build only flag is set.
var buildOnly = process.env.BUILD_ONLY;
var nodeWebkit = false;
// This will take in an object and find any matching keys in the environment
// to use as overrides.
//
// ENV variables:
//
// PKG: Location of `package.json` sans `.json`.
// LIBGIT2: Location of libgit2 source.
// BUILD: Location of nodegit build directory.
function envOverride(obj) {
// Look through all keys.
return Object.keys(obj).reduce(function(obj, key) {
var normalize = key.toUpperCase();
// Check for process environment existence.
if (normalize in process.env) {
obj[key] = process.env[normalize];
}
return obj;
}, obj);
}
// Convert to the correct system path.
function systemPath(parts) {
return parts.join(path.sep);
}
// Will be used near the end to configure `node-gyp`.
var pythonPath = "";
var local = path.join.bind(path, __dirname);
// Common reusable paths that can be overwritten by environment variables.
var paths = envOverride({
pkg: local("package"),
libgit2: local("vendor/libgit2/"),
libssh2: local("vendor/libssh2/"),
http_parser: local("vendor/http_parser/"),
release: local("build/Release/"),
});
// Load the package.json.
var pkg = require(paths.pkg);
if (NODE_VERSION === 0.1) {
pkg.http_parser = pkg.http_parser["0.10"];
}
// ensureDir doesn't promisify correctly so right now just use the callback
fse.ensureDir(path.resolve(__dirname, paths.release), function(err) {
if (err) {
console.log(err);
}
else {
detectNodeWebkit.call(null, __dirname)
.then(fetch)
.then(finish, compile);
}
});
function fetch() {
console.info("[nodegit] Fetching binary from S3.");
if (nodeWebkit) {
throw new Error("Must build for node-webkit");
}
if (buildOnly) {
throw new Error("BUILD_ONLY is set to true, no fetching allowed.");
}
// Using the node-pre-gyp module, attempt to fetch a compatible build.
return exec("node-pre-gyp install");
}
function compile(err) {
if (buildOnly || nodeWebkit) {
console.info("[nodegit] " + err.message);
}
else {
console.info("[nodegit] Failed to install prebuilt, attempting compile.");
}
console.info("[nodegit] Installing all devDependencies");
return exec("npm install --ignore-scripts --dont-prepublish")
.then(function() {
console.info("[nodegit] Determining source dependencies.");
tar = require("tar");
request = require("request");
return Promise.all([
python(),
getVendorLib("libgit2", "https://github.com/libgit2/libgit2/tarball/" + pkg.libgit2.sha),
getVendorLib("libssh2", pkg.libssh2.url),
getVendorLib("http_parser", pkg.http_parser.url),
guardGenerated()
]);
})
.then(buildNative)
.then(finish, fail);
}
function python() {
var pathFinderCommand = process.platform === "win32" ? "where" : "which";
return exec(pathFinderCommand + " python2")
.then(function(which){
return which;
}, function(err) {
return null;
})
.then(function(path) {
return path || exec(pathFinderCommand + " python");
})
.then(function(path) {
return path;
}, function(err) {
return null;
})
.then(function(path) {
if (!path) {
throw new Error("Python is required to build libgit2.");
}
return path.trim();
}, function(err) {
throw new Error("Error finding python.");
})
.then(function(path) {
pythonPath = path;
return exec(path + " -V 2>&1");
})
.then(function(version) {
if (version.trim().indexOf("Python 3") === 0) {
throw new Error("Incorrect version of Python, gyp requires < 3.");
}
});
}
function getVendorLib(name, url) {
var version = pkg[name].sha || pkg[name].version;
console.info("[nodegit] Detecting vendor/" + name + ".");
if (fse.existsSync(paths[name] + version)) {
console.info("[nodegit] vendor/" + name + " already exists.");
return Promise.resolve();
}
else {
console.info("[nodegit] Removing outdated vendor/" + name + ".");
return fse.remove(paths[name])
.then(function() {
return new Promise(function (resolve, reject) {
console.info("[nodegit] Fetching vendor/" + name + ".");
var extract = tar.Extract({
path: paths[name],
strip: true
});
request.get(url).pipe(zlib.createUnzip()).pipe(extract)
.on("error", reject)
.on("end", resolve);
});
}).then(function() {
return fse.writeFile(paths[name] + version, "");
}).then(function() {
if ((name == "libssh2") && (process.platform !== "win32")) {
return exec(paths[name] + "configure", {cwd: paths[name]});
}
});
}
}
function guardGenerated() {
return Promise.all([
fse.stat(path.resolve(__dirname, "src/")),
fse.stat(path.resolve(__dirname, "include/"))
]).then(function() {
return Promise.resolve();
}, function() {
console.info("[nodegit] C++ files not found, generating now.");
return exec("node generate");
});
}
function buildNative() {
return exec("cd " + __dirname).then(function() {
if (nodeWebkit) {
console.info("[nodegit] Building native node-webkit module.");
}
else {
console.info("[nodegit] Building native node module.");
}
var builder = nodeWebkit ? "nw-gyp" : "node-gyp";
var cmd = path.resolve(".", "node_modules", ".bin", builder)
+ " clean configure "
+ (nodeWebkit ? "--target=\"" + nodeWebkit + "\"": "")
+ " build --python \"" + pythonPath + "\""
var opts = {
cwd: __dirname,
maxBuffer: Number.MAX_VALUE
};
return exec(cmd, opts);
})
}
function detectNodeWebkit(directory) {
if (directory) {
var pkg = require(path.resolve(directory, "package.json"));
nodeWebkit = pkg.engines && pkg.engines["node-webkit"];
return findParentDir(path.resolve(directory, ".."), "package.json")
.then(detectNodeWebkit);
}
else {
return Promise.resolve();
}
}
function finish() {
console.info("[nodegit] Completed installation successfully.");
if (!buildOnly) {
console.info("[nodegit] Cleaning up");
return Promise.all([
fse.remove(path.resolve(__dirname, "src")),
fse.remove(path.resolve(__dirname, "include")),
fse.remove(path.resolve(__dirname, "generate/output")),
fse.remove(path.resolve(__dirname, paths.libgit2)),
fse.remove(path.resolve(__dirname, paths.libssh2)),
fse.remove(path.resolve(__dirname, paths.http_parser))
// exec("npm prune --production")
]).done();
}
else {
return Promise.resolve().done();
}
}
function fail(message) {
console.info("[nodegit] Failed to build and install nodegit.");
console.info(message.message);
return Promise.resolve().done();
}