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