Artifact [20379d5b64]

Artifact 20379d5b64769f160eaf5e1480394f1121a1405ed82bb21e8ef76ebe9eb4067a:

• File internal/fsltype/fsltype.go — part of check-in [f5744359d3] at 2026-04-19 16:30:54 on branch trunk — Initial open source release

  libfossil is a pure-Go implementation of the Fossil SCM, reading and writing the same .fossil SQLite repository format as upstream Fossil.

  This is the first public release of code that previously lived in a private repository. The module path is github.com/danmestas/libfossil and the binary is named libfossil to avoid $PATH collisions with upstream fossil.

  Included: - Repo lifecycle (create, clone), checkout/checkin, timeline, merge, diff, annotate, shun, tag, branch, bisect, stash, undo/redo - Sync-over-HTTP protocol (client and handler) - Two SQLite drivers: modernc (pure Go, default) and ncruces (wasm-capable) - Observer interfaces (SyncObserver, CheckoutObserver) with an optional OpenTelemetry implementation in observer/otel (separate submodule) - Deterministic simulation testing harness with BUGGIFY fault injection - Kong-based embeddable CLI under cli/ and a standalone binary under cmd/libfossil/ (user: [email protected], size: 984) [annotate] [blame] [check-ins using]

// Package fsltype defines shared types used across internal packages.
// These are re-exported by the root libfossil package.
package fsltype

import "time"

// FslID is a row-id in the blob table (content-addressed artifacts).
type FslID int64

// FslSize represents a blob size; negative values indicate phantom blobs.
type FslSize int64

const (
	// PhantomSize is the sentinel size for phantom (not-yet-received) blobs.
	PhantomSize FslSize = -1

	// FossilApplicationID is the SQLite application_id for Fossil repositories.
	FossilApplicationID int32 = 252006673
)

const julianEpoch = 2440587.5

// TimeToJulian converts a time.Time to a Fossil Julian day number.
func TimeToJulian(t time.Time) float64 {
	return julianEpoch + float64(t.UTC().UnixMilli())/(86400.0*1000.0)
}

// JulianToTime converts a Fossil Julian day number to time.Time.
func JulianToTime(j float64) time.Time {
	millis := int64((j - julianEpoch) * 86400.0 * 1000.0)
	return time.UnixMilli(millis).UTC()
}