StaticfromUse an already-built SigDb directly, no file involved: its blobs start out in the cache, so a test needs only SigDbBuilder plus this.
Staticopenopen a .sigs.ndjson, .br or .gz; compressed sources are decompressed into a hash-keyed cache once
StaticopenOpen a plain, seekable .sigs.ndjson synchronously (one ranged read, no readline overhead). Pass index to
skip reading the .idx, and strings to use an already-loaded shared dictionary (for a blob-only shard).
StaticopenLike open but fully synchronous (blocking decompression); a hash keys the cache when source
is compressed. Pass strings for a blob-only shard that shares an already-loaded dictionary.
read every unique package blob in index order (used to re-hash a whole shard during verification)
load a single package's blob by seeking to its line (undefined if absent); cached by blob index
The classes a package version declares and the relations between them (superclasses, slot types, virtual,
union) -- LibraryExports.s4Classes, a flat name list, has nowhere to hang this; version defaults to the newest.
Optionalversion: stringThe package OWNING class className (S3: LibraryExports.s3Classes; S4: LibraryExports.s4Classes;
S3 wins ties). With a version, every candidate package is scanned at it instead of using the cached reverse index.
Optionalversion: stringclose the underlying file descriptor (idempotent; safe to call more than once)
recompute this bundle's self-contained content hash from its re-read data (matches writeSignatureDb)
the R versions a base package was part of core, ascending (exactly its stored versions); undefined for a non-base package
Declared dependencies (Depends, Imports, ...) of a package version, with version qualifiers; version defaults to the newest.
Optionalversion: stringthe download count recorded for the package, 0 when this source does not carry it
drop one decoded blob, for the shared budget to reclaim what it costs (see keepBlob)
The rich view of a single named function, decoding only it (unlike functions); version defaults to the newest.
Optionalversion: stringRich per-function view (signatures and call graphs) of a package version; version defaults to the newest.
Optionalversion: stringwhether this bundle actually carries the given version of a package (not just the package)
whether this is an R-core / base package (its versions are the R releases it shipped with; see SigDbPkgMeta)
whether a version is a current CRAN release (i.e. not in the package's noncran/removed set)
the newest version of a package by release date (falling back to the recorded latest, then SemVer order)
The export view of a package version; version defaults to the database's newest if omitted.
Optionalversion: stringevery package name this source can resolve
The packages exporting name, ordered by downloads (descending, ties by name); answered without a reverse
index, since a name the database never stores is rejected outright and only blobs that may hold it are decoded.
the release date of a package version (defaulting to the newest release), or undefined if unknown
Optionalversion: stringevery known release date of a package, in ascending R-version order (empty when no dates were stored)
the repository a version came from, undefined in bundles that record none
Transitive callees of a function within one package version, expanding the stored local call graphs; version defaults to the newest.
Optionalversion: string
Fast, partial reader for a single bundle.
open()/openSync()load the string dictionary +.idxonce, then every query seeks straight to one package blob;open()additionally decompresses a.br/.gzsource into a hash-keyed cache.