Build server prototype (integration with GitHub / NuGet / etc)
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micro-build-server/BuildServer/lib/git/copy.js

76 lines
1.8 KiB

"use strict";
const EventEmitter = require('events').EventEmitter;
const path = require('path');
const fs = require('fs');
const async = require('async');
const Copier = require('recursive-tree-copy').Copier;
const gitToFsCopier = new Copier({
concurrency: 4,
walkSourceTree: (tree) => {
const emitter = new EventEmitter();
process.nextTick(() => {
let entries;
try {
entries = tree.gitTree.entries();
} catch(err) {
return emitter.emit('error', err);
}
async.parallel(entries.map((entry) => (callback) => {
if (entry.isTree()) {
entry.getTree((err, subTree) => {
if (err) {
return callback(err);
}
emitter.emit('tree', { gitTree: subTree, name: entry.name() });
callback();
});
} else if (entry.isFile()) {
emitter.emit('leaf', entry);
callback();
} else {
callback();
}
}), (err) => {
if (err) {
return emitter.emit('error', err);
}
return emitter.emit('done');
});
});
return emitter;
},
createTargetTree: (tree, targetDir, callback) => {
const targetSubdir = path.join(targetDir, tree.name);
fs.mkdir(targetSubdir, (err) => {
if (err && err.code !== 'EEXIST' /* workaround for broken trees */) {
return callback(err);
}
callback(undefined, targetSubdir);
});
},
finalizeTargetTree: (targetSubdir, callback) => callback(),
copyLeaf: (entry, targetDir, callback) => {
const targetPath = path.join(targetDir, entry.name());
entry.getBlob((err, blob) => {
if (err) {
return callback(err);
}
fs.writeFile(targetPath, blob.content(), callback);
});
}
});
exports.gitToFs = (commit, exportDir, callback) => commit.getTree((err, tree) => {
if (err) {
return callback(err);
}
gitToFsCopier.copy({ gitTree: tree, name: "." }, exportDir, callback);
});