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authorKevin Ryde <user42@zip.com.au>2001-11-15 22:24:50 +0100
committerKevin Ryde <user42@zip.com.au>2001-11-15 22:24:50 +0100
commitcc9aa932213e08202b0cc306f739a21d5d5ea613 (patch)
tree6f31d721fec56218071391c09d986f7315bc80fe /scanf/sscanffuns.c
parent74990db073a093a85774be2e6a4e44eaaf5e812d (diff)
downloadgmp-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.c87
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,
+};