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Fix a bug affecting Snappy (crash when using fileInputs)

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This commit is contained in:
Zahary Karadjov 2020-04-10 17:37:51 +03:00
commit b234a99e56
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1 changed files with 6 additions and 12 deletions
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18
faststreams/input_stream.nim
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@ -106,10 +106,14 @@ proc endPos*(s: InputStream): int =
return s.bufferEndPos
proc syncRead(s: InputStream): bool =
if s.vtable == nil or s.vtable.readSync == nil:
return true
let bytesRead = s.vtable.readSync(s, s.bufferStart, s.bufferSize)
if bytesRead == 0:
# TODO close the input device
s.inputDevice = nil
s.vtable = nil
return true
else:
s.bufferEnd = offset(s.bufferStart, bytesRead)
@ -120,7 +124,7 @@ proc ensureBytes*(s: InputStream, n: int): bool =
if distance(s.head, s.bufferEnd) >= n:
return true
if s.inputDevice == nil:
if s.vtable == nil:
return false
# TODO
@ -130,14 +134,8 @@ proc eof*(s: InputStream): bool =
if s.head != s.bufferEnd:
return false
if s.inputDevice == nil:
return true
return s.syncRead()
#proc eob*(s: InputStream): bool {.inline.} =
# s.head != s.bufferEnd
proc peek*(s: InputStream): byte {.inline.} =
doAssert s.head != s.bufferEnd
return s.head[]
@ -150,8 +148,7 @@ when debugHelpers:
proc advance*(s: InputStream) =
if s.head != s.bufferEnd:
s.head = offset(s.head, 1)
elif s.inputDevice != nil:
discard s.syncRead()
discard s.syncRead()
proc read*(s: InputStream): byte =
result = s.peek()
@ -203,9 +200,6 @@ template pos*(s: AsciiInputStream|Utf8InputStream): int =
template eof*(s: AsciiInputStream|Utf8InputStream): bool =
InputStream(s).eof
#template eob*(s: AsciiInputStream|Utf8InputStream): bool =
# InputStream(s).eob
template close*(s: AsciiInputStream|Utf8InputStream) =
close InputStream(s)