/* Various <stdio.h> internals */
/* -------------------------------------------------------------------------- */
-/* Flags for representing mode (see fopen()). */
-#define _PDCLIB_FREAD 1u
-#define _PDCLIB_FWRITE 2u
-#define _PDCLIB_FAPPEND 4u
-#define _PDCLIB_FRW 8u
-#define _PDCLIB_FBIN 16u
+/* Flags for representing mode (see fopen()). Note these must fit the same
+ status field as the _IO?BF flags in <stdio.h> and the internal flags below.
+*/
+#define _PDCLIB_FREAD 8u
+#define _PDCLIB_FWRITE 16u
+#define _PDCLIB_FAPPEND 32u
+#define _PDCLIB_FRW 64u
+#define _PDCLIB_FBIN 128u
+
+/* Internal flags, made to fit the same status field as the flags above. */
+#define _PDCLIB_WROTELAST 256u
+#define _PDCLIB_LIBBUFFER 512u
+#define _PDCLIB_VIRGINSTR 1024u
+#define _PDCLIB_ERRORFLAG 2048u
+#define _PDCLIB_EOFFLAG 4096u
struct _PDCLIB_file_t
{
_PDCLIB_fd_t handle; /* OS-specific file descriptor */
_PDCLIB_fpos_t position; /* file position indicator */
- void * buffer; /* file buffer */
+ char * buffer; /* file buffer */
_PDCLIB_size_t bufsize; /* size of buffer */
+ _PDCLIB_size_t bufidx; /* pointer into buffer */
unsigned int status; /* misc. status bits */
/*mbstate_t mbstate; multibyte parse state - TODO: Unmask. */
struct _PDCLIB_file_t * next; /* provisions for linked list handling */