94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
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/* __gmp_sprintf_funs -- support for gmp_sprintf and gmp_vsprintf.
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THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST
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CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
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FUTURE GNU MP RELEASES.
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "config.h"
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#if HAVE_STDARG
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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/* The data parameter "bufp" points to a "char *buf" which is the next
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character to be written, having started as the destination from the
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application. This is then increased each time output is produced. */
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/* If vsprintf returns -1 then pass it upwards. It doesn't matter that
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"*bufp" is ruined in this case, since gmp_doprint will bail out
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immediately anyway. */
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static int
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gmp_sprintf_format (char **bufp, const char *fmt, va_list ap)
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{
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char *buf = *bufp;
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int ret;
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vsprintf (buf, fmt, ap);
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ret = strlen (buf);
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*bufp = buf + ret;
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return ret;
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}
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static int
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gmp_sprintf_memory (char **bufp, const char *str, size_t len)
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{
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char *buf = *bufp;
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*bufp = buf + len;
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memcpy (buf, str, len);
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return len;
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}
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static int
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gmp_sprintf_reps (char **bufp, int c, int reps)
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{
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char *buf = *bufp;
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ASSERT (reps >= 0);
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*bufp = buf + reps;
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memset (buf, c, reps);
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return reps;
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}
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static int
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gmp_sprintf_final (char **bufp, int c, int reps)
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{
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char *buf = *bufp;
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*buf = '\0';
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return 0;
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}
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const struct doprnt_funs_t __gmp_sprintf_funs = {
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(doprnt_format_t) gmp_sprintf_format,
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(doprnt_memory_t) gmp_sprintf_memory,
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(doprnt_reps_t) gmp_sprintf_reps,
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(doprnt_final_t) gmp_sprintf_final
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};
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