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authorkitsunyan2018-03-10 21:10:43 +0000
committerkitsunyan2018-03-10 21:10:43 +0000
commitfd397b356e9be1d3572ace965ead57120803a0ac (patch)
treed9e6fe9f903ab935fa6df2e6862a97515caf926c /lib/bisect.nim
Initial commitv0.1
Diffstat (limited to 'lib/bisect.nim')
-rw-r--r--lib/bisect.nim77
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/bisect.nim b/lib/bisect.nim
new file mode 100644
index 0000000..53d73f1
--- /dev/null
+++ b/lib/bisect.nim
@@ -0,0 +1,77 @@
+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