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Fix asyncfile in Windows Server 2003

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Fixes #5022
This commit is contained in:
Dmitry Polienko 2016-11-14 02:55:57 -08:00
commit e695d3bfba
1 changed files with 13 additions and 4 deletions
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13
lib/pure/asyncfile.nim
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@ -118,8 +118,8 @@ proc readBuffer*(f: AsyncFile, buf: pointer, size: int): Future[int] =
## Read ``size`` bytes from the specified file asynchronously starting at ## Read ``size`` bytes from the specified file asynchronously starting at
## the current position of the file pointer. ## the current position of the file pointer.
## ##
## If the file pointer is past the end of the file then an empty string is ## If the file pointer is past the end of the file then zero is returned
## returned. ## and no bytes are read into ``buf``
var retFuture = newFuture[int]("asyncfile.readBuffer") var retFuture = newFuture[int]("asyncfile.readBuffer")
when defined(windows) or defined(nimdoc): when defined(windows) or defined(nimdoc):
@ -149,6 +149,10 @@ proc readBuffer*(f: AsyncFile, buf: pointer, size: int): Future[int] =
let err = osLastError() let err = osLastError()
if err.int32 != ERROR_IO_PENDING: if err.int32 != ERROR_IO_PENDING:
GC_unref(ol) GC_unref(ol)
if err.int32 == ERROR_HANDLE_EOF:
# This happens in Windows Server 2003
retFuture.complete(0)
else:
retFuture.fail(newException(OSError, osErrorMsg(err))) retFuture.fail(newException(OSError, osErrorMsg(err)))
else: else:
# Request completed immediately. # Request completed immediately.
@ -233,6 +237,11 @@ proc read*(f: AsyncFile, size: int): Future[string] =
dealloc buffer dealloc buffer
buffer = nil buffer = nil
GC_unref(ol) GC_unref(ol)
if err.int32 == ERROR_HANDLE_EOF:
# This happens in Windows Server 2003
retFuture.complete("")
else:
retFuture.fail(newException(OSError, osErrorMsg(err))) retFuture.fail(newException(OSError, osErrorMsg(err)))
else: else:
# Request completed immediately. # Request completed immediately.