Sync to the latest version.

Can be broken or partially implemented.

include/bh/file.h

@@ -0,0 +1,37 @@
+#ifndef BHLIB_FILE_H
+#define BHLIB_FILE_H
+
+#include "io.h"
+
+typedef struct bh_file_s bh_file_t;
+
+bh_file_t *bh_file_new(const char *path, 
+                       const char *mode);
+                       
+void bh_file_free(bh_file_t *file);
+
+size_t bh_file_read(bh_file_t *file,
+                    char *buffer,
+                    size_t size);
+
+size_t bh_file_write(bh_file_t *file,
+                     const char *buffer,
+                     size_t size);
+
+void bh_file_flush(bh_file_t *file);
+
+void bh_file_seek(bh_file_t *file,
+                  bh_off_t pos,
+                  int dir);
+
+bh_off_t bh_file_tell(bh_file_t *file);
+
+bh_off_t bh_file_available(bh_file_t *file);
+
+int bh_file_error(bh_file_t *file);
+
+int bh_file_eof(bh_file_t *file);
+
+void bh_file_clear(bh_file_t *file); 
+
+#endif /* BHLIB_FILE_H */