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author | Kevin Ryde <user42@zip.com.au> | 2001-11-15 22:24:50 +0100 |
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committer | Kevin Ryde <user42@zip.com.au> | 2001-11-15 22:24:50 +0100 |
commit | cc9aa932213e08202b0cc306f739a21d5d5ea613 (patch) | |
tree | 6f31d721fec56218071391c09d986f7315bc80fe /scanf/sscanffuns.c | |
parent | 74990db073a093a85774be2e6a4e44eaaf5e812d (diff) | |
download | gmp-cc9aa932213e08202b0cc306f739a21d5d5ea613.tar.gz |
* scanf/doscan.c, scanf/fscanf.c, scanf/fscanffuns.c, scanf/scanf.c,
scanf/sscanf.c, scanf/sscanffuns.c, scanf/vfscanf.c, scanf/vscanf.c,
scanf/vsscanf.c, scanf/Makefile.am, tests/misc/t-scanf.c: New files.
Diffstat (limited to 'scanf/sscanffuns.c')
-rw-r--r-- | scanf/sscanffuns.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/scanf/sscanffuns.c b/scanf/sscanffuns.c new file mode 100644 index 000000000..54af51436 --- /dev/null +++ b/scanf/sscanffuns.c @@ -0,0 +1,87 @@ +/* __gmp_sscanf_funs -- support for formatted input from a string. + + THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST + CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN + FUTURE GNU MP RELEASES. + +Copyright 2001 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 2.1 of the License, or (at your +option) any later version. + +The GNU MP Library 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 Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include <stdio.h> +#include "gmp.h" +#include "gmp-impl.h" + + +static int +scan (const char **sp, const char *fmt, void *p1, void *p2) +{ + return sscanf (*sp, fmt, p1, p2); +} + +static void +step (const char **sp, int n) +{ + ASSERT (n >= 0); + + /* shouldn't push us past the the end of the string */ +#if WANT_ASSERT + { + int i; + for (i = 0; i < n; i++) + ASSERT ((*sp)[i] != '\0'); + } +#endif + + (*sp) += n; +} + +static int +get (const char **sp) +{ + const char *s; + int c; + s = *sp; + c = *s++; + if (c == '\0') + return EOF; + *sp = s; + return c; +} + +static void +unget (int c, const char **sp) +{ + const char *s; + s = *sp; + if (c == EOF) + { + ASSERT (*s == '\0'); + return; + } + s--; + ASSERT (*s == c); + *sp = s; +} + +const struct gmp_doscan_funs_t __gmp_sscanf_funs = { + (gmp_doscan_scan_t) scan, + (gmp_doscan_step_t) step, + (gmp_doscan_get_t) get, + (gmp_doscan_unget_t) unget, +}; |