#define _PDCLIB_FBIN 128u
/* Internal flags, made to fit the same status field as the flags above. */
-#define _PDCLIB_LIBBUFFER 512u
+#define _PDCLIB_FREEBUFFER 512u
#define _PDCLIB_ERRORFLAG 1024u
#define _PDCLIB_EOFFLAG 2048u
#define _PDCLIB_WIDESTREAM 4096u
#define _PDCLIB_BYTESTREAM 8192u
+#define _PDCLIB_DELONCLOSE 16384u
/* Position / status structure for getpos() / fsetpos(). */
struct _PDCLIB_fpos_t
/* Status structure required by _PDCLIB_print(). */
struct _PDCLIB_status_t
{
- int base; /* base to which the value shall be converted */
+ int base; /* base to which the value shall be converted */
_PDCLIB_int_fast32_t flags; /* flags and length modifiers */
- _PDCLIB_size_t n; /* maximum number of characters to be written */
- _PDCLIB_size_t i; /* number of characters already written */
- _PDCLIB_size_t this; /* output chars in the current conversion */
- char * s; /* target buffer */
- _PDCLIB_size_t width; /* width of current field */
- _PDCLIB_size_t prec; /* precision of current field */
- struct _PDCLIB_file_t * stream;/* for to-stream output */
- _PDCLIB_va_list arg; /* argument stack passed to the printf function */
+ _PDCLIB_size_t n; /* print: maximum characters to be written */
+ /* scan: number matched conversion specifiers */
+ _PDCLIB_size_t i; /* number of characters read/written */
+ _PDCLIB_size_t current;/* chars read/written in the CURRENT conversion */
+ char * s; /* *sprintf(): target buffer */
+ /* *sscanf(): source string */
+ _PDCLIB_size_t width; /* specified field width */
+ _PDCLIB_size_t prec; /* specified field precision */
+ struct _PDCLIB_file_t * stream; /* *fprintf() / *fscanf() stream */
+ _PDCLIB_va_list arg; /* argument stack */
};
/* -------------------------------------------------------------------------- */
/* 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
+ 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 );
+/* The worker for all scanf() 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 scanf() function, of which the member stream will be
+ preserved; n, i, and s will be updated; and all others will be trashed by
+ the function.
+ Returns a pointer to the first character not parsed as conversion specifier,
+ or NULL in case of error.
+ FIXME: Should distinguish between matching and input error
+*/
+const char * _PDCLIB_scan( 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 );
*/
int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream );
+/* Closing all streams on program exit */
+void _PDCLIB_closeall( void );
+
/* -------------------------------------------------------------------------- */
/* errno */
/* -------------------------------------------------------------------------- */
#define _PDCLIB_EINVAL 5
/* Used in the example implementation for "I/O retries exceeded". */
#define _PDCLIB_ERETRY 6
+/* One larger than the largest used errno */
+#define _PDCLIB_EMAX 7
+/* TODO: Doing this via a static array is not the way to do it. */
+char const * _PDCLIB_errno_texts[ _PDCLIB_EMAX ];