diff options
Diffstat (limited to 'desktop/node_modules/fs-extra/lib/copy')
-rw-r--r-- | desktop/node_modules/fs-extra/lib/copy/copy.js | 212 | ||||
-rw-r--r-- | desktop/node_modules/fs-extra/lib/copy/index.js | 6 |
2 files changed, 218 insertions, 0 deletions
diff --git a/desktop/node_modules/fs-extra/lib/copy/copy.js b/desktop/node_modules/fs-extra/lib/copy/copy.js new file mode 100644 index 0000000..411fc64 --- /dev/null +++ b/desktop/node_modules/fs-extra/lib/copy/copy.js @@ -0,0 +1,212 @@ +'use strict' + +const fs = require('graceful-fs') +const path = require('path') +const mkdirp = require('../mkdirs').mkdirs +const pathExists = require('../path-exists').pathExists +const utimes = require('../util/utimes').utimesMillis +const stat = require('../util/stat') + +function copy (src, dest, opts, cb) { + if (typeof opts === 'function' && !cb) { + cb = opts + opts = {} + } else if (typeof opts === 'function') { + opts = { filter: opts } + } + + cb = cb || function () {} + opts = opts || {} + + opts.clobber = 'clobber' in opts ? !!opts.clobber : true // default to true for now + opts.overwrite = 'overwrite' in opts ? !!opts.overwrite : opts.clobber // overwrite falls back to clobber + + // Warn about using preserveTimestamps on 32-bit node + if (opts.preserveTimestamps && process.arch === 'ia32') { + console.warn(`fs-extra: Using the preserveTimestamps option in 32-bit node is not recommended;\n + see https://github.com/jprichardson/node-fs-extra/issues/269`) + } + + stat.checkPaths(src, dest, 'copy', (err, stats) => { + if (err) return cb(err) + const { srcStat, destStat } = stats + stat.checkParentPaths(src, srcStat, dest, 'copy', err => { + if (err) return cb(err) + if (opts.filter) return handleFilter(checkParentDir, destStat, src, dest, opts, cb) + return checkParentDir(destStat, src, dest, opts, cb) + }) + }) +} + +function checkParentDir (destStat, src, dest, opts, cb) { + const destParent = path.dirname(dest) + pathExists(destParent, (err, dirExists) => { + if (err) return cb(err) + if (dirExists) return startCopy(destStat, src, dest, opts, cb) + mkdirp(destParent, err => { + if (err) return cb(err) + return startCopy(destStat, src, dest, opts, cb) + }) + }) +} + +function handleFilter (onInclude, destStat, src, dest, opts, cb) { + Promise.resolve(opts.filter(src, dest)).then(include => { + if (include) return onInclude(destStat, src, dest, opts, cb) + return cb() + }, error => cb(error)) +} + +function startCopy (destStat, src, dest, opts, cb) { + if (opts.filter) return handleFilter(getStats, destStat, src, dest, opts, cb) + return getStats(destStat, src, dest, opts, cb) +} + +function getStats (destStat, src, dest, opts, cb) { + const stat = opts.dereference ? fs.stat : fs.lstat + stat(src, (err, srcStat) => { + if (err) return cb(err) + + if (srcStat.isDirectory()) return onDir(srcStat, destStat, src, dest, opts, cb) + else if (srcStat.isFile() || + srcStat.isCharacterDevice() || + srcStat.isBlockDevice()) return onFile(srcStat, destStat, src, dest, opts, cb) + else if (srcStat.isSymbolicLink()) return onLink(destStat, src, dest, opts, cb) + }) +} + +function onFile (srcStat, destStat, src, dest, opts, cb) { + if (!destStat) return copyFile(srcStat, src, dest, opts, cb) + return mayCopyFile(srcStat, src, dest, opts, cb) +} + +function mayCopyFile (srcStat, src, dest, opts, cb) { + if (opts.overwrite) { + fs.unlink(dest, err => { + if (err) return cb(err) + return copyFile(srcStat, src, dest, opts, cb) + }) + } else if (opts.errorOnExist) { + return cb(new Error(`'${dest}' already exists`)) + } else return cb() +} + +function copyFile (srcStat, src, dest, opts, cb) { + if (typeof fs.copyFile === 'function') { + return fs.copyFile(src, dest, err => { + if (err) return cb(err) + return setDestModeAndTimestamps(srcStat, dest, opts, cb) + }) + } + return copyFileFallback(srcStat, src, dest, opts, cb) +} + +function copyFileFallback (srcStat, src, dest, opts, cb) { + const rs = fs.createReadStream(src) + rs.on('error', err => cb(err)).once('open', () => { + const ws = fs.createWriteStream(dest, { mode: srcStat.mode }) + ws.on('error', err => cb(err)) + .on('open', () => rs.pipe(ws)) + .once('close', () => setDestModeAndTimestamps(srcStat, dest, opts, cb)) + }) +} + +function setDestModeAndTimestamps (srcStat, dest, opts, cb) { + fs.chmod(dest, srcStat.mode, err => { + if (err) return cb(err) + if (opts.preserveTimestamps) { + return utimes(dest, srcStat.atime, srcStat.mtime, cb) + } + return cb() + }) +} + +function onDir (srcStat, destStat, src, dest, opts, cb) { + if (!destStat) return mkDirAndCopy(srcStat, src, dest, opts, cb) + if (destStat && !destStat.isDirectory()) { + return cb(new Error(`Cannot overwrite non-directory '${dest}' with directory '${src}'.`)) + } + return copyDir(src, dest, opts, cb) +} + +function mkDirAndCopy (srcStat, src, dest, opts, cb) { + fs.mkdir(dest, err => { + if (err) return cb(err) + copyDir(src, dest, opts, err => { + if (err) return cb(err) + return fs.chmod(dest, srcStat.mode, cb) + }) + }) +} + +function copyDir (src, dest, opts, cb) { + fs.readdir(src, (err, items) => { + if (err) return cb(err) + return copyDirItems(items, src, dest, opts, cb) + }) +} + +function copyDirItems (items, src, dest, opts, cb) { + const item = items.pop() + if (!item) return cb() + return copyDirItem(items, item, src, dest, opts, cb) +} + +function copyDirItem (items, item, src, dest, opts, cb) { + const srcItem = path.join(src, item) + const destItem = path.join(dest, item) + stat.checkPaths(srcItem, destItem, 'copy', (err, stats) => { + if (err) return cb(err) + const { destStat } = stats + startCopy(destStat, srcItem, destItem, opts, err => { + if (err) return cb(err) + return copyDirItems(items, src, dest, opts, cb) + }) + }) +} + +function onLink (destStat, src, dest, opts, cb) { + fs.readlink(src, (err, resolvedSrc) => { + if (err) return cb(err) + if (opts.dereference) { + resolvedSrc = path.resolve(process.cwd(), resolvedSrc) + } + + if (!destStat) { + return fs.symlink(resolvedSrc, dest, cb) + } else { + fs.readlink(dest, (err, resolvedDest) => { + if (err) { + // dest exists and is a regular file or directory, + // Windows may throw UNKNOWN error. If dest already exists, + // fs throws error anyway, so no need to guard against it here. + if (err.code === 'EINVAL' || err.code === 'UNKNOWN') return fs.symlink(resolvedSrc, dest, cb) + return cb(err) + } + if (opts.dereference) { + resolvedDest = path.resolve(process.cwd(), resolvedDest) + } + if (stat.isSrcSubdir(resolvedSrc, resolvedDest)) { + return cb(new Error(`Cannot copy '${resolvedSrc}' to a subdirectory of itself, '${resolvedDest}'.`)) + } + + // do not copy if src is a subdir of dest since unlinking + // dest in this case would result in removing src contents + // and therefore a broken symlink would be created. + if (destStat.isDirectory() && stat.isSrcSubdir(resolvedDest, resolvedSrc)) { + return cb(new Error(`Cannot overwrite '${resolvedDest}' with '${resolvedSrc}'.`)) + } + return copyLink(resolvedSrc, dest, cb) + }) + } + }) +} + +function copyLink (resolvedSrc, dest, cb) { + fs.unlink(dest, err => { + if (err) return cb(err) + return fs.symlink(resolvedSrc, dest, cb) + }) +} + +module.exports = copy diff --git a/desktop/node_modules/fs-extra/lib/copy/index.js b/desktop/node_modules/fs-extra/lib/copy/index.js new file mode 100644 index 0000000..b7e4f7f --- /dev/null +++ b/desktop/node_modules/fs-extra/lib/copy/index.js @@ -0,0 +1,6 @@ +'use strict' + +const u = require('universalify').fromCallback +module.exports = { + copy: u(require('./copy')) +} |