/* $Id$ */
-/* Release $Name$ */
-
/* PDCLib internal integer logic <_PDCLIB_int.h>
This file is part of the Public Domain C Library (PDCLib).
#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
#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
typedef _PDCLIB_fast8 _PDCLIB_int_fast8_t;
typedef unsigned _PDCLIB_fast8 _PDCLIB_uint_fast8_t;
-#define _PDCLIB_INT_FAST8_MIN concat( concat( _PDCLIB_, _PDCLIB_FAST8 ), _MIN )
-#define _PDCLIB_INT_FAST8_MAX concat( concat( _PDCLIB_, _PDCLIB_FAST8 ), _MAX )
-#define _PDCLIB_UINT_FAST8_MAX concat( concat( _PDCLIB_U, _PDCLIB_FAST8 ), _MAX )
+#define _PDCLIB_INT_FAST8_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST8 ), _MIN )
+#define _PDCLIB_INT_FAST8_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST8 ), _MAX )
+#define _PDCLIB_UINT_FAST8_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_FAST8 ), _MAX )
typedef _PDCLIB_fast16 _PDCLIB_int_fast16_t;
typedef unsigned _PDCLIB_fast16 _PDCLIB_uint_fast16_t;
-#define _PDCLIB_INT_FAST16_MIN concat( concat( _PDCLIB_, _PDCLIB_FAST16 ), _MIN )
-#define _PDCLIB_INT_FAST16_MAX concat( concat( _PDCLIB_, _PDCLIB_FAST16 ), _MAX )
-#define _PDCLIB_UINT_FAST16_MAX concat( concat( _PDCLIB_U, _PDCLIB_FAST16 ), _MAX )
+#define _PDCLIB_INT_FAST16_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST16 ), _MIN )
+#define _PDCLIB_INT_FAST16_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST16 ), _MAX )
+#define _PDCLIB_UINT_FAST16_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_FAST16 ), _MAX )
typedef _PDCLIB_fast32 _PDCLIB_int_fast32_t;
typedef unsigned _PDCLIB_fast32 _PDCLIB_uint_fast32_t;
-#define _PDCLIB_INT_FAST32_MIN concat( concat( _PDCLIB_, _PDCLIB_FAST32 ), _MIN )
-#define _PDCLIB_INT_FAST32_MAX concat( concat( _PDCLIB_, _PDCLIB_FAST32 ), _MAX )
-#define _PDCLIB_UINT_FAST32_MAX concat( concat( _PDCLIB_U, _PDCLIB_FAST32 ), _MAX )
+#define _PDCLIB_INT_FAST32_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST32 ), _MIN )
+#define _PDCLIB_INT_FAST32_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST32 ), _MAX )
+#define _PDCLIB_UINT_FAST32_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_FAST32 ), _MAX )
typedef _PDCLIB_fast64 _PDCLIB_int_fast64_t;
typedef unsigned _PDCLIB_fast64 _PDCLIB_uint_fast64_t;
-#define _PDCLIB_INT_FAST64_MIN concat( concat( _PDCLIB_, _PDCLIB_FAST64 ), _MIN )
-#define _PDCLIB_INT_FAST64_MAX concat( concat( _PDCLIB_, _PDCLIB_FAST64 ), _MAX )
-#define _PDCLIB_UINT_FAST64_MAX concat( concat( _PDCLIB_U, _PDCLIB_FAST64 ), _MAX )
+#define _PDCLIB_INT_FAST64_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST64 ), _MIN )
+#define _PDCLIB_INT_FAST64_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_FAST64 ), _MAX )
+#define _PDCLIB_UINT_FAST64_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_FAST64 ), _MAX )
/* -------------------------------------------------------------------------- */
/* Various <stddef.h> typedefs and limits */
/* -------------------------------------------------------------------------- */
typedef _PDCLIB_ptrdiff _PDCLIB_ptrdiff_t;
-#define _PDCLIB_PTRDIFF_MIN concat( concat( _PDCLIB_, _PDCLIB_PTRDIFF ), _MIN )
-#define _PDCLIB_PTRDIFF_MAX concat( concat( _PDCLIB_, _PDCLIB_PTRDIFF ), _MAX )
+#define _PDCLIB_PTRDIFF_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_PTRDIFF ), _MIN )
+#define _PDCLIB_PTRDIFF_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_PTRDIFF ), _MAX )
-#define _PDCLIB_SIG_ATOMIC_MIN concat( concat( _PDCLIB_, _PDCLIB_SIG_ATOMIC ), _MIN )
-#define _PDCLIB_SIG_ATOMIC_MAX concat( concat( _PDCLIB_, _PDCLIB_SIG_ATOMIC ), _MAX )
+#define _PDCLIB_SIG_ATOMIC_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_SIG_ATOMIC ), _MIN )
+#define _PDCLIB_SIG_ATOMIC_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_SIG_ATOMIC ), _MAX )
typedef _PDCLIB_size _PDCLIB_size_t;
-#define _PDCLIB_SIZE_MAX concat( concat( _PDCLIB_, _PDCLIB_SIZE ), _MAX )
+#define _PDCLIB_SIZE_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_SIZE ), _MAX )
typedef _PDCLIB_wchar _PDCLIB_wchar_t;
-#define _PDCLIB_WCHAR_MIN concat( concat( _PDCLIB_, _PDCLIB_WCHAR ), _MIN )
-#define _PDCLIB_WCHAR_MAX concat( concat( _PDCLIB_, _PDCLIB_WCHAR ), _MAX )
+#define _PDCLIB_WCHAR_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_WCHAR ), _MIN )
+#define _PDCLIB_WCHAR_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_WCHAR ), _MAX )
typedef _PDCLIB_intptr _PDCLIB_intptr_t;
typedef unsigned _PDCLIB_intptr _PDCLIB_uintptr_t;
-#define _PDCLIB_INTPTR_MIN concat( concat( _PDCLIB_, _PDCLIB_INTPTR ), _MIN )
-#define _PDCLIB_INTPTR_MAX concat( concat( _PDCLIB_, _PDCLIB_INTPTR ), _MAX )
-#define _PDCLIB_UINTPTR_MAX concat( concat( _PDCLIB_U, _PDCLIB_INTPTR ), _MAX )
+#define _PDCLIB_INTPTR_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTPTR ), _MIN )
+#define _PDCLIB_INTPTR_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTPTR ), _MAX )
+#define _PDCLIB_UINTPTR_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_INTPTR ), _MAX )
typedef _PDCLIB_intmax _PDCLIB_intmax_t;
typedef unsigned _PDCLIB_intmax _PDCLIB_uintmax_t;
-#define _PDCLIB_INTMAX_MIN concat( concat( _PDCLIB_, _PDCLIB_INTMAX ), _MIN )
-#define _PDCLIB_INTMAX_MAX concat( concat( _PDCLIB_, _PDCLIB_INTMAX ), _MAX )
-#define _PDCLIB_UINTMAX_MAX concat( concat( _PDCLIB_U, _PDCLIB_INTMAX ), _MAX )
-#define _PDCLIB_INTMAX_C( value ) concat( value, _PDCLIB_INTMAX_LITERAL )
-#define _PDCLIB_UINTMAX_C( value ) concat( value, concat( u, _PDCLIB_INTMAX_LITERAL ) )
+#define _PDCLIB_INTMAX_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTMAX ), _MIN )
+#define _PDCLIB_INTMAX_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTMAX ), _MAX )
+#define _PDCLIB_UINTMAX_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_INTMAX ), _MAX )
+#define _PDCLIB_INTMAX_C( value ) _PDCLIB_concat( value, _PDCLIB_INTMAX_LITERAL )
+#define _PDCLIB_UINTMAX_C( value ) _PDCLIB_concat( value, _PDCLIB_concat( u, _PDCLIB_INTMAX_LITERAL ) )
/* -------------------------------------------------------------------------- */
-/* Declaration of helper functions (implemented in functions/_PDCLIB). */
+/* Various <stdio.h> internals */
/* -------------------------------------------------------------------------- */
-/* This is the main function called by atoi(), atol() and atoll(). */
-_PDCLIB_intmax_t _PDCLIB_atomax( const char * s );
-
-/* Two helper functions used by strtol(), strtoul() and long long variants. */
-const char * _PDCLIB_strtox_prelim( const char * p, char * sign, int * base );
-_PDCLIB_uintmax_t _PDCLIB_strtox_main( const char ** p, unsigned int base, _PDCLIB_uintmax_t error, _PDCLIB_uintmax_t limval, _PDCLIB_uintmax_t limdigit, char * sign );
+/* 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_LIBBUFFER 512u
+#define _PDCLIB_ERRORFLAG 1024u
+#define _PDCLIB_EOFFLAG 2048u
+#define _PDCLIB_WIDESTREAM 4096u
+#define _PDCLIB_BYTESTREAM 8192u
+
+/* Position / status structure for getpos() / fsetpos(). */
+struct _PDCLIB_fpos_t
+{
+ _PDCLIB_uint64_t offset; /* File position offset */
+ int status; /* Multibyte parsing state (unused, reserved) */
+};
-/* Digits array used by various integer conversion functions in <stdlib.h> */
-extern char _PDCLIB_digits[];
+/* FILE structure */
+struct _PDCLIB_file_t
+{
+ _PDCLIB_fd_t handle; /* OS file handle */
+ char * buffer; /* Pointer to buffer memory */
+ _PDCLIB_size_t bufsize; /* Size of buffer */
+ _PDCLIB_size_t bufidx; /* Index of current position in buffer */
+ _PDCLIB_size_t bufend; /* Index of last pre-read character in buffer */
+ struct _PDCLIB_fpos_t pos; /* Offset and multibyte parsing state */
+ _PDCLIB_size_t ungetidx; /* Number of ungetc()'ed characters */
+ unsigned char * ungetbuf; /* ungetc() buffer */
+ unsigned int status; /* Status flags; see above */
+ /* multibyte parsing status to be added later */
+ char * filename; /* Name the current stream has been opened with */
+ struct _PDCLIB_file_t * next; /* Pointer to next struct (internal) */
+};
/* -------------------------------------------------------------------------- */
/* Internal data types */
struct _PDCLIB_memnode_t * next;
};
-#if 0
+/* Status structure required by _PDCLIB_print(). */
+struct _PDCLIB_status_t
+{
+ int base; /* base to which the value shall be converted */
+ _PDCLIB_int_fast32_t flags; /* flags and length modifiers */
+ _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 */
+};
-/* fpos_t, an object type (not an array!) capable of storing any position
- information of a file.
+/* -------------------------------------------------------------------------- */
+/* Declaration of helper functions (implemented in functions/_PDCLIB). */
+/* -------------------------------------------------------------------------- */
+
+/* This is the main function called by atoi(), atol() and atoll(). */
+_PDCLIB_intmax_t _PDCLIB_atomax( const char * s );
+
+/* Two helper functions used by strtol(), strtoul() and long long variants. */
+const char * _PDCLIB_strtox_prelim( const char * p, char * sign, int * base );
+_PDCLIB_uintmax_t _PDCLIB_strtox_main( const char ** p, unsigned int base, _PDCLIB_uintmax_t error, _PDCLIB_uintmax_t limval, int limdigit, char * sign );
+
+/* Digits arrays used by various integer conversion functions */
+extern char _PDCLIB_digits[];
+extern char _PDCLIB_Xdigits[];
+
+/* 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 );
+
+/* 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
*/
-typedef unsigned long long int _PDCLIB_fpos_t;
+const char * _PDCLIB_scan( const char * spec, struct _PDCLIB_status_t * status );
-/* file descriptor - a type used by the OS to identify a stream */
-typedef int _PDCLIB_fd_t;
+/* Parsing any fopen() style filemode string into a number of flags. */
+unsigned int _PDCLIB_filemode( const char * mode );
-#endif
+/* Sanity checking and preparing of read buffer, should be called first thing
+ by any stdio read-data function.
+ Returns 0 on success, EOF on error.
+ On error, EOF / error flags and errno are set appropriately.
+*/
+int _PDCLIB_prepread( struct _PDCLIB_file_t * stream );
+
+/* Sanity checking, should be called first thing by any stdio write-data
+ function.
+ Returns 0 on success, EOF on error.
+ On error, error flags and errno are set appropriately.
+*/
+int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream );
+
+/* -------------------------------------------------------------------------- */
+/* errno */
+/* -------------------------------------------------------------------------- */
+
+extern int _PDCLIB_errno;
+int * _PDCLIB_errno_func( void );
+
+/* ERANGE and EDOM are specified by the standard. */
+#define _PDCLIB_ERANGE 1
+#define _PDCLIB_EDOM 2
+/* Used in the example implementation for any kind of I/O error. */
+#define _PDCLIB_EIO 3
+/* Used in the example implementation for "unknown error". */
+#define _PDCLIB_EUNKNOWN 4
+/* Used in the example implementation for "invalid parameter value". */
+#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 ];
projects / pdclib / blobdiff