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| -rw-r--r-- | doc/lib.rst | 6 | ||||
| -rw-r--r-- | lib/pure/oids.nim | 93 | ||||
| -rw-r--r-- | tools/kochdocs.nim | 1 |
3 files changed, 0 insertions, 100 deletions
diff --git a/doc/lib.rst b/doc/lib.rst index fdc188ef2..d6c296e8d 100644 --- a/doc/lib.rst +++ b/doc/lib.rst @@ -372,12 +372,6 @@ Multimedia support Miscellaneous ------------- -* `oids <oids.html>`_ - An OID is a global ID that consists of a timestamp, - a unique counter and a random value. This combination should suffice to - produce a globally distributed unique ID. This implementation was extracted - from the Mongodb interface and it thus binary compatible with a Mongo OID. - * `endians <endians.html>`_ This module contains helpers that deal with different byte orders. diff --git a/lib/pure/oids.nim b/lib/pure/oids.nim deleted file mode 100644 index d6369b5f9..000000000 --- a/lib/pure/oids.nim +++ /dev/null @@ -1,93 +0,0 @@ -# -# -# Nim's Runtime Library -# (c) Copyright 2013 Andreas Rumpf -# -# See the file "copying.txt", included in this -# distribution, for details about the copyright. -# - -## Nim OID support. An OID is a global ID that consists of a timestamp, -## a unique counter and a random value. This combination should suffice to -## produce a globally distributed unique ID. This implementation was extracted -## from the Mongodb interface and it thus binary compatible with a Mongo OID. -## -## This implementation calls ``math.randomize()`` for the first call of -## ``genOid``. - -import times, endians - -type - Oid* = object ## an OID - time: int32 ## - fuzz: int32 ## - count: int32 ## - -proc `==`*(oid1: Oid, oid2: Oid): bool = - ## Compare two Mongo Object IDs for equality - return (oid1.time == oid2.time) and (oid1.fuzz == oid2.fuzz) and (oid1.count == oid2.count) - -proc hexbyte*(hex: char): int = - case hex - of '0'..'9': result = (ord(hex) - ord('0')) - of 'a'..'f': result = (ord(hex) - ord('a') + 10) - of 'A'..'F': result = (ord(hex) - ord('A') + 10) - else: discard - -proc parseOid*(str: cstring): Oid = - ## parses an OID. - var bytes = cast[cstring](addr(result.time)) - var i = 0 - while i < 12: - bytes[i] = chr((hexbyte(str[2 * i]) shl 4) or hexbyte(str[2 * i + 1])) - inc(i) - -proc oidToString*(oid: Oid, str: cstring) = - const hex = "0123456789abcdef" - # work around a compiler bug: - var str = str - var o = oid - var bytes = cast[cstring](addr(o)) - var i = 0 - while i < 12: - let b = bytes[i].ord - str[2 * i] = hex[(b and 0xF0) shr 4] - str[2 * i + 1] = hex[b and 0xF] - inc(i) - str[24] = '\0' - -proc `$`*(oid: Oid): string = - result = newString(24) - oidToString(oid, result) - -var - incr: int - fuzz: int32 - -proc genOid*(): Oid = - ## generates a new OID. - proc rand(): cint {.importc: "rand", header: "<stdlib.h>", nodecl.} - proc srand(seed: cint) {.importc: "srand", header: "<stdlib.h>", nodecl.} - - var t = getTime().toUnix.int32 - - var i = int32(atomicInc(incr)) - - if fuzz == 0: - # racy, but fine semantically: - srand(t) - fuzz = rand() - bigEndian32(addr result.time, addr(t)) - result.fuzz = fuzz - bigEndian32(addr result.count, addr(i)) - -proc generatedTime*(oid: Oid): Time = - ## returns the generated timestamp of the OID. - var tmp: int32 - var dummy = oid.time - bigEndian32(addr(tmp), addr(dummy)) - result = fromUnix(tmp) - -when not defined(testing) and isMainModule: - let xo = genOid() - echo xo.generatedTime diff --git a/tools/kochdocs.nim b/tools/kochdocs.nim index 32784e752..f2b09d380 100644 --- a/tools/kochdocs.nim +++ b/tools/kochdocs.nim @@ -196,7 +196,6 @@ lib/pure/memfiles.nim lib/pure/collections/critbits.nim lib/core/locks.nim lib/core/rlocks.nim -lib/pure/oids.nim lib/pure/endians.nim lib/pure/uri.nim lib/pure/nimprof.nim |