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author | Nevena Bojovic <nenabojov@gmail.com> | 2022-03-01 20:05:50 +0100 |
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committer | Nevena Bojovic <nenabojov@gmail.com> | 2022-03-01 20:05:50 +0100 |
commit | 291803c31f829fe0d32bb3207bc11def95a7408c (patch) | |
tree | c7d43107d79291b19d8c9eceefbe91c9f9a52acf /sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js | |
parent | 1fa69862057db4db53cfda5be9c24b4228ef63f7 (diff) |
Urađena test aplikacija. Povezan front i back.
Diffstat (limited to 'sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js')
-rw-r--r-- | sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js b/sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js new file mode 100644 index 00000000..c3f9e35e --- /dev/null +++ b/sandbox/testAppNevena/Front/node_modules/cacache/lib/util/move-file.js @@ -0,0 +1,67 @@ +'use strict' + +const fs = require('fs') +const util = require('util') +const chmod = util.promisify(fs.chmod) +const unlink = util.promisify(fs.unlink) +const stat = util.promisify(fs.stat) +const move = require('@npmcli/move-file') +const pinflight = require('promise-inflight') + +module.exports = moveFile + +function moveFile (src, dest) { + const isWindows = global.__CACACHE_TEST_FAKE_WINDOWS__ || + process.platform === 'win32' + + // 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 new Promise((resolve, reject) => { + fs.link(src, dest, (err) => { + if (err) { + if (isWindows && err.code === 'EPERM') { + // XXX This is a really weird way to handle this situation, as it + // results in the src file being deleted even though the dest + // might not exist. Since we pretty much always write files to + // deterministic locations based on content hash, this is likely + // ok (or at worst, just ends in a future cache miss). But it would + // be worth investigating at some time in the future if this is + // really what we want to do here. + return resolve() + } else if (err.code === 'EEXIST' || err.code === 'EBUSY') { + // file already exists, so whatever + return resolve() + } else + return reject(err) + } else + return resolve() + }) + }) + .then(() => { + // content should never change for any reason, so make it read-only + return Promise.all([ + unlink(src), + !isWindows && chmod(dest, '0444'), + ]) + }) + .catch(() => { + return pinflight('cacache-move-file:' + dest, () => { + return stat(dest).catch((err) => { + if (err.code !== 'ENOENT') { + // Something else is wrong here. Bail bail bail + throw err + } + // file doesn't already exist! let's try a rename -> copy fallback + // only delete if it successfully copies + return move(src, dest) + }) + }) + }) +} |