diff options
author | Kat Marchán <kzm@sykosomatic.org> | 2017-04-29 01:11:18 +0300 |
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committer | Rebecca Turner <me@re-becca.org> | 2017-05-26 02:13:33 +0300 |
commit | c8b66854adef8d91c4ad2b058db6f1ca48031b58 (patch) | |
tree | 5e34a1bc728c551d5fa1cbf6bd50d53a04c634f3 /node_modules/cacache/lib/util/move-file.js | |
parent | cbaf1c914036bc8ac1f9ea965ccba4fd690c8c45 (diff) |
pacote@2.7.4
Diffstat (limited to 'node_modules/cacache/lib/util/move-file.js')
-rw-r--r-- | node_modules/cacache/lib/util/move-file.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/node_modules/cacache/lib/util/move-file.js b/node_modules/cacache/lib/util/move-file.js new file mode 100644 index 000000000..422c8294e --- /dev/null +++ b/node_modules/cacache/lib/util/move-file.js @@ -0,0 +1,50 @@ +'use strict' + +const fs = require('graceful-fs') +const BB = require('bluebird') +let move +let pinflight + +module.exports = moveFile +function moveFile (src, dest) { + // This isn't quite an fs.rename -- the assumption is that + // if `dest` already exists, and we get certain errors while + // trying to move it, we should just not bother. + // + // In the case of cache corruption, users will receive an + // EINTEGRITY error elsewhere, and can remove the offending + // content their own way. + // + // Note that, as the name suggests, this strictly only supports file moves. + return BB.fromNode(cb => { + fs.link(src, dest, err => { + if (err) { + if (err.code === 'EEXIST' || err.code === 'EBUSY') { + // file already exists, so whatever + } else if (err.code === 'EPERM' && process.platform === 'win32') { + // file handle stayed open even past graceful-fs limits + } else { + return cb(err) + } + } + return fs.unlink(src, cb) + }) + }).catch(err => { + if (process.platform !== 'win32') { + throw err + } else { + if (!pinflight) { pinflight = require('promise-inflight') } + return pinflight('cacache-move-file:' + dest, () => { + return BB.promisify(fs.stat)(dest).catch(err => { + if (err !== 'ENOENT') { + // Something else is wrong here. Bail bail bail + throw err + } + // file doesn't already exist! let's try a rename -> copy fallback + if (!move) { move = require('move-concurrently') } + return move(src, dest, { BB, fs }) + }) + }) + } + }) +} |