Change type of snapshot from char array to byte array to avoid portability pr...

src/utils.h

Index: src/utils.h
===================================================================
--- src/utils.h	(revision 1142)
+++ src/utils.h	(working copy)
@@ -224,10 +224,10 @@
 char* ReadLine(const char* prompt);
 
 
-// Read and return the raw chars in a file. the size of the buffer is returned
+// Read and return the raw bytes in a file. the size of the buffer is returned
 // in size.
-// The returned buffer is not 0-terminated. It must be freed by the caller.
-char* ReadChars(const char* filename, int* size, bool verbose = true);
+// The returned buffer must be freed by the caller.
+byte* ReadBytes(const char* filename, int* size, bool verbose = true);
 
 
 // Write size chars from str to the file given by filename.
@@ -238,6 +238,14 @@
                bool verbose = true);
 
 
+// Write size bytes to the file given by filename.
+// The file is overwritten. Returns the number of bytes written.
+int WriteBytes(const char* filename,
+               const byte* bytes,
+               int size,
+               bool verbose = true);
+
+
 // Write the C code
 // const char* <varname> = "<str>";
 // const int <varname>_len = <len>;