jsprintf.c
上传用户:xiejiait
上传日期:2007-01-06
资源大小:881k
文件大小:2k
- /* @(#)jsprintf.c 1.12 99/08/30 Copyright 1985 J. Schilling */
- /*
- * Copyright (c) 1985 J. Schilling
- */
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include <mconfig.h>
- #include <stdio.h>
- #include <vadefs.h>
- #include <standard.h>
- #define BFSIZ 256
- typedef struct {
- short cnt;
- char *ptr;
- char buf[BFSIZ];
- int count;
- FILE *f;
- } *BUF, _BUF;
- LOCAL void _bflush __PR((BUF));
- LOCAL void _bput __PR((char, long));
- EXPORT int js_fprintf __PR((FILE *, const char *, ...));
- EXPORT int js_printf __PR((const char *, ...));
- LOCAL void _bflush (bp)
- register BUF bp;
- {
- bp->count += bp->ptr - bp->buf;
- if (filewrite (bp->f, bp->buf, bp->ptr - bp->buf) < 0)
- bp->count = EOF;
- bp->ptr = bp->buf;
- bp->cnt = BFSIZ;
- }
- #ifdef PROTOTYPES
- LOCAL void _bput (char c, long l)
- #else
- LOCAL void _bput (c, l)
- char c;
- long l;
- #endif
- {
- register BUF bp = (BUF)l;
- *bp->ptr++ = c;
- if (--bp->cnt <= 0)
- _bflush (bp);
- }
- /* VARARGS2 */
- #ifdef PROTOTYPES
- EXPORT int js_printf(const char *form, ...)
- #else
- EXPORT int js_printf(form, va_alist)
- char *form;
- va_dcl
- #endif
- {
- va_list args;
- _BUF bb;
- bb.ptr = bb.buf;
- bb.cnt = BFSIZ;
- bb.count = 0;
- bb.f = stdout;
- #ifdef PROTOTYPES
- va_start(args, form);
- #else
- va_start(args);
- #endif
- format(_bput, (long)&bb, form, args);
- va_end(args);
- if (bb.cnt < BFSIZ)
- _bflush (&bb);
- return (bb.count);
- }
- /* VARARGS3 */
- #ifdef PROTOTYPES
- EXPORT int js_fprintf(FILE *file, const char *form, ...)
- #else
- EXPORT int js_fprintf(file, form, va_alist)
- FILE *file;
- char *form;
- va_dcl
- #endif
- {
- va_list args;
- _BUF bb;
- bb.ptr = bb.buf;
- bb.cnt = BFSIZ;
- bb.count = 0;
- bb.f = file;
- #ifdef PROTOTYPES
- va_start(args, form);
- #else
- va_start(args);
- #endif
- format(_bput, (long)&bb, form, args);
- va_end(args);
- if (bb.cnt < BFSIZ)
- _bflush (&bb);
- return (bb.count);
- }