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Utility methods

This commit is contained in:
Bryan Ashby 2022-09-14 22:48:56 -06:00
parent a1188fb90c
commit ad44495469
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1 changed files with 28 additions and 15 deletions
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43
core/file_entry.js
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@ -428,34 +428,47 @@ module.exports = class FileEntry {
return Object.keys(FILE_WELL_KNOWN_META);
}
static findBySha(sha, cb) {
static getFileIdsBySha(sha, options = {}, cb) {
// full or partial SHA-256
const limit = _.isNumber(options.limit) ? `LIMIT ${options.limit}` : '';
fileDb.all(
`SELECT file_id
FROM file
WHERE file_sha256 LIKE "${sha}%"
LIMIT 2;`, // limit 2 such that we can find if there are dupes
WHERE file_sha256 LIKE "${sha}%" ${limit};`,
(err, fileIdRows) => {
if (err) {
return cb(err);
}
if (!fileIdRows || 0 === fileIdRows.length) {
return cb(Errors.DoesNotExist('No matches'));
}
if (fileIdRows.length > 1) {
return cb(Errors.Invalid('SHA is ambiguous'));
}
const fileEntry = new FileEntry();
return fileEntry.load(fileIdRows[0].file_id, err => {
return cb(err, fileEntry);
});
return cb(
null,
(fileIdRows || []).map(r => r.file_id)
);
}
);
}
static findBySha(sha, cb) {
FileEntry.getFileIdsBySha(sha, { limit: 2 }, (err, fileIds) => {
if (err) {
return cb(err);
}
if (!fileIds || 0 === fileIds.length) {
return cb(Errors.DoesNotExist('No matches'));
}
if (fileIds.length > 1) {
return cb(Errors.Invalid('SHA is ambiguous'));
}
const fileEntry = new FileEntry();
return fileEntry.load(fileIds[0], err => {
return cb(err, fileEntry);
});
});
}
// Attempt to fine a file by an *existing* full path.
// Checkums may have changed and are not validated here.
static findByFullPath(fullPath, cb) {