close stream properly

nimPNG.nim

@@ -26,10 +26,9 @@
 #-------------------------------------
 
 import unsigned, streams, endians, tables, hashes, math, nimz
-import strutils
 
 const
-  NIM_PNG_VERSION = "0.1.0"
+  NIM_PNG_VERSION = "0.1.1"
 
 type
   PNGChunkType = distinct int32
@@ -193,17 +192,6 @@ type
     height*: int
     data*: string
 
-proc toHex*(input: string) =
-  var i = 0
-  for x in 0..input.high:
-    write(stdout, toHex(ord(input[x]), 2))
-    inc i
-    if i == 40:
-      write(stdout, "\n")
-      i = 0
-  if i < 40:
-    write(stdout, "\n")
-   
 proc makePNGDecoder*(): PNGDecoder =
   var s: PNGDecoder
   new(s)
@@ -1779,6 +1767,7 @@ proc loadPNG*(fileName: string, colorType: PNGcolorType, bitDepth: int, settings
     var s = newFileStream(fileName, fmRead)
     if s == nil: return nil
     result = s.PNGDecode(colorType, bitDepth, settings)
+    s.close()
   except:
     debugEcho getCurrentExceptionMsg()
     result = nil
@@ -2832,10 +2821,6 @@ proc `$`(colorType: PNGColorType): string =
   of LCT_RGBA: result = "LCT_RGBA"
   else: result = "LCT_UNKNOWN"
 
-proc show*(mode: PNGColorMode) =
-  for k, v in fieldPairs(mode[]):
-    echo k, " ", $v
-    
 proc PNGEncode*(input: string, w, h: int, settings = PNGEncoder(nil)): PNG =
   var png: PNG
   new(png)
@@ -2966,6 +2951,7 @@ proc savePNG32*(fileName, input: string, w, h: int): bool =
     var png = PNGEncode(input, LCT_RGBA, 8, w, h)
     var s = newFileStream(fileName, fmWrite)
     png.writeChunks s
+    s.close()
     result = true
   except:
     debugEcho getCurrentExceptionMsg()
@@ -2976,6 +2962,7 @@ proc savePNG24*(fileName, input: string, w, h: int): bool =
     var png = PNGEncode(input, LCT_RGB, 8, w, h)
     var s = newFileStream(fileName, fmWrite)
     png.writeChunks s
+    s.close()
     result = true
   except:
     debugEcho getCurrentExceptionMsg()

nimPNG.nimble

@@ -1,6 +1,6 @@
 [Package]
 name          = "nimPNG"
-version       = "0.1.0"
+version       = "0.1.1"
 author        = "Andri Lim"
 description   = "PNG encoder and decoder"
 license       = "MIT"