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author | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
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committer | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
commit | 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch) | |
tree | c7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/fs-extra/lib/copy-sync | |
parent | 412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff) | |
download | website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.tar.gz website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.zip |
build: Add some required modules for node
Diffstat (limited to 'node_modules/fs-extra/lib/copy-sync')
-rw-r--r-- | node_modules/fs-extra/lib/copy-sync/copy-sync.js | 209 | ||||
-rw-r--r-- | node_modules/fs-extra/lib/copy-sync/index.js | 3 |
2 files changed, 212 insertions, 0 deletions
diff --git a/node_modules/fs-extra/lib/copy-sync/copy-sync.js b/node_modules/fs-extra/lib/copy-sync/copy-sync.js new file mode 100644 index 0000000..c4742db --- /dev/null +++ b/node_modules/fs-extra/lib/copy-sync/copy-sync.js @@ -0,0 +1,209 @@ +'use strict' + +const fs = require('graceful-fs') +const path = require('path') +const mkdirpSync = require('../mkdirs').mkdirsSync +const utimesSync = require('../util/utimes.js').utimesMillisSync + +const notExist = Symbol('notExist') +const existsReg = Symbol('existsReg') + +function copySync (src, dest, opts) { + if (typeof opts === 'function') { + opts = {filter: opts} + } + + 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`) + } + + src = path.resolve(src) + dest = path.resolve(dest) + + // don't allow src and dest to be the same + if (src === dest) throw new Error('Source and destination must not be the same.') + + if (opts.filter && !opts.filter(src, dest)) return + + const destParent = path.dirname(dest) + if (!fs.existsSync(destParent)) mkdirpSync(destParent) + return startCopy(src, dest, opts) +} + +function startCopy (src, dest, opts) { + if (opts.filter && !opts.filter(src, dest)) return + return getStats(src, dest, opts) +} + +function getStats (src, dest, opts) { + const statSync = opts.dereference ? fs.statSync : fs.lstatSync + const st = statSync(src) + + if (st.isDirectory()) return onDir(st, src, dest, opts) + else if (st.isFile() || + st.isCharacterDevice() || + st.isBlockDevice()) return onFile(st, src, dest, opts) + else if (st.isSymbolicLink()) return onLink(src, dest, opts) +} + +function onFile (srcStat, src, dest, opts) { + const resolvedPath = checkDest(dest) + if (resolvedPath === notExist) { + return copyFile(srcStat, src, dest, opts) + } else if (resolvedPath === existsReg) { + return mayCopyFile(srcStat, src, dest, opts) + } else { + if (src === resolvedPath) return + return mayCopyFile(srcStat, src, dest, opts) + } +} + +function mayCopyFile (srcStat, src, dest, opts) { + if (opts.overwrite) { + fs.unlinkSync(dest) + return copyFile(srcStat, src, dest, opts) + } else if (opts.errorOnExist) { + throw new Error(`'${dest}' already exists`) + } +} + +function copyFile (srcStat, src, dest, opts) { + if (typeof fs.copyFileSync === 'function') { + fs.copyFileSync(src, dest) + fs.chmodSync(dest, srcStat.mode) + if (opts.preserveTimestamps) { + return utimesSync(dest, srcStat.atime, srcStat.mtime) + } + return + } + return copyFileFallback(srcStat, src, dest, opts) +} + +function copyFileFallback (srcStat, src, dest, opts) { + const BUF_LENGTH = 64 * 1024 + const _buff = require('../util/buffer')(BUF_LENGTH) + + const fdr = fs.openSync(src, 'r') + const fdw = fs.openSync(dest, 'w', srcStat.mode) + let bytesRead = 1 + let pos = 0 + + while (bytesRead > 0) { + bytesRead = fs.readSync(fdr, _buff, 0, BUF_LENGTH, pos) + fs.writeSync(fdw, _buff, 0, bytesRead) + pos += bytesRead + } + + if (opts.preserveTimestamps) fs.futimesSync(fdw, srcStat.atime, srcStat.mtime) + + fs.closeSync(fdr) + fs.closeSync(fdw) +} + +function onDir (srcStat, src, dest, opts) { + const resolvedPath = checkDest(dest) + if (resolvedPath === notExist) { + if (isSrcSubdir(src, dest)) { + throw new Error(`Cannot copy '${src}' to a subdirectory of itself, '${dest}'.`) + } + return mkDirAndCopy(srcStat, src, dest, opts) + } else if (resolvedPath === existsReg) { + if (isSrcSubdir(src, dest)) { + throw new Error(`Cannot copy '${src}' to a subdirectory of itself, '${dest}'.`) + } + return mayCopyDir(src, dest, opts) + } else { + if (src === resolvedPath) return + return copyDir(src, dest, opts) + } +} + +function mayCopyDir (src, dest, opts) { + if (!fs.statSync(dest).isDirectory()) { + throw new Error(`Cannot overwrite non-directory '${dest}' with directory '${src}'.`) + } + return copyDir(src, dest, opts) +} + +function mkDirAndCopy (srcStat, src, dest, opts) { + fs.mkdirSync(dest, srcStat.mode) + fs.chmodSync(dest, srcStat.mode) + return copyDir(src, dest, opts) +} + +function copyDir (src, dest, opts) { + fs.readdirSync(src).forEach(item => { + startCopy(path.join(src, item), path.join(dest, item), opts) + }) +} + +function onLink (src, dest, opts) { + let resolvedSrcPath = fs.readlinkSync(src) + + if (opts.dereference) { + resolvedSrcPath = path.resolve(process.cwd(), resolvedSrcPath) + } + + let resolvedDestPath = checkDest(dest) + if (resolvedDestPath === notExist || resolvedDestPath === existsReg) { + // if dest already exists, fs throws error anyway, + // so no need to guard against it here. + return fs.symlinkSync(resolvedSrcPath, dest) + } else { + if (opts.dereference) { + resolvedDestPath = path.resolve(process.cwd(), resolvedDestPath) + } + if (resolvedDestPath === resolvedSrcPath) return + + // prevent copy if src is a subdir of dest since unlinking + // dest in this case would result in removing src contents + // and therefore a broken symlink would be created. + if (fs.statSync(dest).isDirectory() && isSrcSubdir(resolvedDestPath, resolvedSrcPath)) { + throw new Error(`Cannot overwrite '${resolvedDestPath}' with '${resolvedSrcPath}'.`) + } + return copyLink(resolvedSrcPath, dest) + } +} + +function copyLink (resolvedSrcPath, dest) { + fs.unlinkSync(dest) + return fs.symlinkSync(resolvedSrcPath, dest) +} + +// check if dest exists and/or is a symlink +function checkDest (dest) { + let resolvedPath + try { + resolvedPath = fs.readlinkSync(dest) + } catch (err) { + if (err.code === 'ENOENT') return notExist + + // dest exists and is a regular file or directory, Windows may throw UNKNOWN error + if (err.code === 'EINVAL' || err.code === 'UNKNOWN') return existsReg + + throw err + } + return resolvedPath // dest exists and is a symlink +} + +// return true if dest is a subdir of src, otherwise false. +// extract dest base dir and check if that is the same as src basename +function isSrcSubdir (src, dest) { + const baseDir = dest.split(path.dirname(src) + path.sep)[1] + if (baseDir) { + const destBasename = baseDir.split(path.sep)[0] + if (destBasename) { + return src !== dest && dest.indexOf(src) > -1 && destBasename === path.basename(src) + } + return false + } + return false +} + +module.exports = copySync diff --git a/node_modules/fs-extra/lib/copy-sync/index.js b/node_modules/fs-extra/lib/copy-sync/index.js new file mode 100644 index 0000000..ebc7e0b --- /dev/null +++ b/node_modules/fs-extra/lib/copy-sync/index.js @@ -0,0 +1,3 @@ +module.exports = { + copySync: require('./copy-sync') +} |