updates

Prototypes/Files.wl

@@ -41,3 +41,43 @@ If[ $SystemID === "Windows-x86-64",
   $LocalAppDataDirectory = FileNameJoin[{$AppDataDirectory, "Local"}];
   $RoamingAppDataDirectory = FileNameJoin[{$AppDataDirectory, "Roaming"}];
 ]
+
+
+FilePartition[file_String, size_] :=
+ Module[{n, dir, filesize, count, in, uuid, partdir, out, bytes, done},
+  count =
+   If[IntegerQ[size], size,
+    QuantityMagnitude[UnitConvert[size, "Bytes"]]];
+  dir = DirectoryName[file];
+  in = OpenRead[file, BinaryFormat -> True];
+  uuid = CreateUUID[];
+  partdir = CreateDirectory[FileNameJoin[{dir, uuid}]];
+  i = 0;
+  While[Length[bytes = BinaryReadList[in, "Byte", count]] > 0,
+   out = OpenWrite[
+     FileNameJoin[{partdir,
+       "part-" <> IntegerString[(i++), 10, 16] <> ".data"}],
+     BinaryFormat -> True];
+   BinaryWrite[out, bytes, "Byte"];
+   ];
+  Close[out];
+  Close[in];
+  partdir
+  ]
+
+  FileJoin[partdir_String, name_String] :=
+   Module[{parts, dir, file, out, in, bytes},
+    parts = Sort[FileNames["part-*.data", partdir]];
+    dir = DirectoryName[partdir];
+    file = FileNameJoin[{dir, name}];
+    out = OpenWrite[file, BinaryFormat -> True];
+    Map[
+     Function[{f},
+      in = OpenRead[f, BinaryFormat -> True];
+      bytes = BinaryReadList[in, "Byte"];
+      BinaryWrite[out, bytes, "Byte"];
+      Close[in];
+      ], parts];
+    Close[out];
+    file
+    ]

Prototypes/PacletInfo.m

@@ -3,7 +3,7 @@
   Description -> "A paclet for prototype functions",
   Creator -> "Arnoud Buzing",
   Publisher -> "Wolfram Research",
-  Version -> "0.3.0",
+  Version -> "0.3.1",
   MathematicaVersion -> "11.2+",
   Loading -> Automatic,
   Thumbnail -> "icons/icon.png",
@@ -56,7 +56,7 @@
 "Prototypes`$RoamingAppDataDirectory",
 "Prototypes`$UUIDStringPattern", "Prototypes`LayeredGeoGraphics",
 "Prototypes`RenderOnlineNotebook","Prototypes`CreateNotebookRenderAPI",
-"Prototypes`CaptureFromIPCamera","Prototypes`Prototype"},
+"Prototypes`CaptureFromIPCamera","Prototypes`Prototype", "Prototypes`FilePartition", "Prototypes`FileJoin"},
      Context -> {"Prototypes`"} }
   }
 ]

Prototypes/Usage.wl

@@ -111,3 +111,5 @@ CreateNotebookRenderAPI::usage = "CreateNotebookRenderAPI[] creates the cloud ap
 RenderOnlineNotebook::usage = "RenderOnlineNotebook[url] reads 'url' and opens a private editable copy";
 (* prototype *)
 Prototype::usage = "Prototype[\"symbol\"] modifies System 'symbol' in a custom way. The modified behavior is printed to the session"
+FilePartition::usage = "FilePartition[file,size] partitions 'file' into chunks with the given 'size' and places them in a new directory"
+FileJoin::usage = "FileJoin[dir,file] combines binary part files in 'dir' into a single 'file'"