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Diffstat (limited to 'lib/libc/stdio/local.h')
| -rw-r--r-- | lib/libc/stdio/local.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h new file mode 100644 index 0000000..9d2ff0f --- /dev/null +++ b/lib/libc/stdio/local.h @@ -0,0 +1,138 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)local.h 8.3 (Berkeley) 7/3/94 + * $FreeBSD$ + */ + +#include <sys/types.h> /* for off_t */ +#include <pthread.h> +#include <string.h> +#include <wchar.h> + +/* + * Information local to this implementation of stdio, + * in particular, macros and private variables. + */ + +extern int _sread(FILE *, char *, int); +extern int _swrite(FILE *, char const *, int); +extern fpos_t _sseek(FILE *, fpos_t, int); +extern int _ftello(FILE *, fpos_t *); +extern int _fseeko(FILE *, off_t, int, int); +extern int __fflush(FILE *fp); +extern void __fcloseall(void); +extern wint_t __fgetwc(FILE *); +extern wint_t __fputwc(wchar_t, FILE *); +extern int __sflush(FILE *); +extern FILE *__sfp(void); +extern int __slbexpand(FILE *, size_t); +extern int __srefill(FILE *); +extern int __sread(void *, char *, int); +extern int __swrite(void *, char const *, int); +extern fpos_t __sseek(void *, fpos_t, int); +extern int __sclose(void *); +extern void __sinit(void); +extern void _cleanup(void); +extern void __smakebuf(FILE *); +extern int __swhatbuf(FILE *, size_t *, int *); +extern int _fwalk(int (*)(FILE *)); +extern int __svfscanf(FILE *, const char *, __va_list); +extern int __swsetup(FILE *); +extern int __sflags(const char *, int *); +extern int __ungetc(int, FILE *); +extern wint_t __ungetwc(wint_t, FILE *); +extern int __vfprintf(FILE *, const char *, __va_list); +extern int __vfscanf(FILE *, const char *, __va_list); +extern int __vfwprintf(FILE *, const wchar_t *, __va_list); +extern int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, + __va_list); +extern size_t __fread(void * __restrict buf, size_t size, size_t count, + FILE * __restrict fp); +extern int __sdidinit; + + +/* hold a buncha junk that would grow the ABI */ +struct __sFILEX { + unsigned char *_up; /* saved _p when _p is doing ungetc data */ + pthread_mutex_t fl_mutex; /* used for MT-safety */ + pthread_t fl_owner; /* current owner */ + int fl_count; /* recursive lock count */ + int orientation; /* orientation for fwide() */ + mbstate_t mbstate; /* multibyte conversion state */ +}; + +/* + * Prepare the given FILE for writing, and return 0 iff it + * can be written now. Otherwise, return EOF and set errno. + */ +#define prepwrite(fp) \ + ((((fp)->_flags & __SWR) == 0 || \ + ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ + __swsetup(fp)) + +/* + * Test whether the given stdio file has an active ungetc buffer; + * release such a buffer, without restoring ordinary unread data. + */ +#define HASUB(fp) ((fp)->_ub._base != NULL) +#define FREEUB(fp) { \ + if ((fp)->_ub._base != (fp)->_ubuf) \ + free((char *)(fp)->_ub._base); \ + (fp)->_ub._base = NULL; \ +} + +/* + * test for an fgetln() buffer. + */ +#define HASLB(fp) ((fp)->_lb._base != NULL) +#define FREELB(fp) { \ + free((char *)(fp)->_lb._base); \ + (fp)->_lb._base = NULL; \ +} + +#define INITEXTRA(fp) { \ + (fp)->_extra->_up = NULL; \ + (fp)->_extra->fl_mutex = PTHREAD_MUTEX_INITIALIZER; \ + (fp)->_extra->fl_owner = NULL; \ + (fp)->_extra->fl_count = 0; \ + (fp)->_extra->orientation = 0; \ + memset(&(fp)->_extra->mbstate, 0, sizeof(mbstate_t)); \ +} + +/* + * Set the orientation for a stream. If o > 0, the stream has wide- + * orientation. If o < 0, the stream has byte-orientation. + */ +#define ORIENT(fp, o) do { \ + if ((fp)->_extra->orientation == 0) \ + (fp)->_extra->orientation = (o); \ +} while (0) |
