Minor cleanups.

[pdclib] / internals / _PDCLIB_int.h

diff --git a/internals/_PDCLIB_int.h b/internals/_PDCLIB_int.h
index 9d83c66918e0b554d3d692c6dded60c8b00bf3c9..5d503ccc120ea7152a8895b3ca5f17eac94ea706 100644 (file)
--- a/internals/_PDCLIB_int.h
+++ b/internals/_PDCLIB_int.h
@@ -118,8 +118,6 @@ typedef unsigned char      _PDCLIB_uint8_t;
 #define _PDCLIB_INT8_MAX   _PDCLIB_CHAR_MAX
 #define _PDCLIB_INT8_MIN   _PDCLIB_CHAR_MIN
 #define _PDCLIB_UINT8_MAX  _PDCLIB_UCHAR_MAX
-#define _PDCLIB_INT8_LITERAL
-#define _PDCLIB_UINT8_LITERAL
 #else
 #error Unsupported width of char (not 8 bits).
 #endif
@@ -131,16 +129,12 @@ typedef unsigned int       _PDCLIB_uint16_t;
 #define _PDCLIB_INT16_MAX  _PDCLIB_INT_MAX
 #define _PDCLIB_INT16_MIN  _PDCLIB_INT_MIN
 #define _PDCLIB_UINT16_MAX _PDCLIB_UINT_MAX
-#define _PDCLIB_INT16_LITERAL
-#define _PDCLIB_UINT16_LITERAL
 #elif   _PDCLIB_SHRT_BYTES == 2
 typedef signed short       _PDCLIB_int16_t;
 typedef unsigned short     _PDCLIB_uint16_t;
 #define _PDCLIB_INT16_MAX  _PDCLIB_SHRT_MAX
 #define _PDCLIB_INT16_MIN  _PDCLIB_SHRT_MIN
 #define _PDCLIB_UINT16_MAX _PDCLIB_USHRT_MAX
-#define _PDCLIB_INT16_LITERAL  s
-#define _PDCLIB_UINT16_LITERAL us
 #else
 #error Neither 'short' nor 'int' are 16-bit.
 #endif
@@ -254,21 +248,31 @@ typedef unsigned _PDCLIB_intmax _PDCLIB_uintmax_t;
 /* Various <stdio.h> internals                                                */
 /* -------------------------------------------------------------------------- */
 
-/* Flags for representing mode (see fopen()). */
-#define _PDCLIB_FREAD    1
-#define _PDCLIB_FWRITE   2
-#define _PDCLIB_FAPPEND  4
-#define _PDCLIB_FRW      8
-#define _PDCLIB_FBIN    16
+/* 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;   /* index to point of action in buffer */
+    _PDCLIB_size_t          bufend;   /* index to end of pre-read 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 */
 };
 
@@ -326,5 +330,14 @@ _PDCLIB_uintmax_t _PDCLIB_strtox_main( const char ** p, unsigned int base, _PDCL
 extern char _PDCLIB_digits[];
 extern char _PDCLIB_Xdigits[];
 
-/* The worker for all printf() type of functions. */
+/* The worker for all printf() type of functions. The pointer spec should point
+   to the introducing '%' of a conversion specifier. The status structure is to
+   be that of the current printf() function, of which the members n, s, stream
+   and arg will be preserved, i will be updated, and all others will be trashed
+   by the function.
+   Returns a pointer to the first character not parsed as conversion specifier.
+*/
 const char * _PDCLIB_print( const char * spec, struct _PDCLIB_status_t * status );
+
+/* Parsing any fopen() style filemode string into a number of flags. */
+unsigned int _PDCLIB_filemode( const char * mode );