return true
	}

	proc _db {args} {
		return [uplevel 1 [list ::appfs::db {*}$args]]
	}

	proc _normalizeOS {os} {
		set os [string tolower [string trim $os]]

		switch -- $os {
			"linux" - "freebsd" - "openbsd" - "netbsd" {
				return $os
			}
			"sunos" {
				return "solaris"
			}
		}

		return -code error "Unable to normalize OS: $os"
	}

	proc _normalizeCPU {cpu} {
		set cpu [string tolower [string trim $cpu]]

		switch -glob -- $cpu {
			"i?86" {
				return "ix86"
			}
			"x86_64" {
				return $cpu
			}
		}

		return -code error "Unable to normalize CPU: $cpu"
	}

	proc init {} {
		if {[info exists ::appfs::init_called]} {
			return
		}

		set ::appfs::init_called 1

			}

			set work [split $line ","]

			unset -nocomplain pkgInfo
			set pkgInfo(package)  [lindex $work 0]
			set pkgInfo(version)  [lindex $work 1]
			set pkgInfo(os)       [lindex $work 2]
			set pkgInfo(cpuArch)  [lindex $work 3]
			set pkgInfo(os)       [_normalizeOS [lindex $work 2]]
			set pkgInfo(cpuArch)  [_normalizeCPU [lindex $work 3]]
			set pkgInfo(hash)     [string tolower [lindex $work 4]]
			set pkgInfo(hash_type) "sha1"
			set pkgInfo(isLatest) [expr {!![lindex $work 5]}]

			if {![_isHash $pkgInfo(hash)]} {
				continue
			}