Add IO type checking functions, add ReadLine

include/BH/IO.h

@@ -86,16 +86,25 @@ BH_IO *BH_FileNew(const char *path,
                   int *result);
 
 
+int BH_IOIsFile(BH_IO *device);
+
+
 BH_IO *BH_BufferNew(BH_IO *device,
                     size_t size,
                     int *result);
 
 
+int BH_IOIsBuffer(BH_IO *device);
+
+
 BH_IO *BH_BytesNew(char *data,
                    size_t size,
                    int *result);
 
 
+int BH_IOIsBytes(BH_IO *device);
+
+
 void BH_IOFree(BH_IO *device);
 
 
@@ -155,4 +164,14 @@ int BH_IOEndOfFile(BH_IO *device);
 int BH_IOClear(BH_IO *device);
 
 
+char *BH_IOReadLine(BH_IO *device,
+                    char *str,
+                    size_t size);
+
+
+char *BH_IOReadLineFull(BH_IO *device,
+                        char *str,
+                        size_t size);
+
+
 #endif /* BH_IO_H */