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import future, os, osproc, re, strutils
{.passL: "-lalpm".}
proc vercmp(a: cstring, b: cstring): cint
{.cdecl, importc: "alpm_pkg_vercmp".}
proc getSourceVersion(relativePath: string): seq[string] =
let lines = execProcess("/bin/bash", ["-c",
"""source "$1/PKGBUILD" && echo "$epoch" && echo "$pkgver" && echo "$pkgrel"""",
"bash", relativePath], options = {}).split("\n")
if lines.len == 4:
lines[0 .. 2]
else:
@[]
proc getSrcInfoVersion(relativePath: string): seq[string] =
var file: File
var epoch = ""
var pkgver = ""
var pkgrel = ""
if file.open(relativePath & "/.SRCINFO"):
try:
var matches: array[2, string]
while true:
let line = file.readLine()
if line.match(re"[\t\ ]*(\w+)\ =\ (.*)", matches):
case matches[0]:
of "epoch":
epoch = matches[1]
of "pkgver":
pkgver = matches[1]
of "pkgrel":
pkgrel = matches[1]
else:
discard
except:
discard
finally:
file.close()
@[epoch, pkgver, pkgrel]
let compareMethod = commandLineParams()[0]
let relativePath = commandLineParams()[1]
let compareVersion = commandLineParams()[2]
let (currentVersion, supported) = if compareMethod == "source":
(getSourceVersion(relativePath), true)
elif compareMethod == "srcinfo":
(getSrcInfoVersion(relativePath), true)
else:
(@[], false)
if not supported:
programResult = 255
elif currentVersion.len != 3:
programResult = 125
else:
let epoch = currentVersion[0].strip
let pkgver = currentVersion[1].strip
let pkgrel = currentVersion[2].strip
if pkgver.len == 0 or pkgrel.len == 0:
programResult = 125
else:
let version = if epoch.len > 0:
epoch & ":" & pkgver & "-" & pkgrel
else:
pkgver & "-" & pkgrel
echo(version)
if vercmp(compareVersion, version) > 0:
programResult = 0
else:
programResult = 1
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