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authorIgor Pashev <pashev.igor@gmail.com>2012-06-24 22:28:35 +0000
committerIgor Pashev <pashev.igor@gmail.com>2012-06-24 22:28:35 +0000
commit3950ffe2a485479f6561c27364d3d7df5a21d124 (patch)
tree468c6e14449d1b1e279222ec32f676b0311917d2 /src/lib/libast/stdio/vsnprintf.c
downloadksh-upstream.tar.gz
Imported Upstream version 93u+upstream
Diffstat (limited to 'src/lib/libast/stdio/vsnprintf.c')
-rw-r--r--src/lib/libast/stdio/vsnprintf.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib/libast/stdio/vsnprintf.c b/src/lib/libast/stdio/vsnprintf.c
new file mode 100644
index 0000000..5cde8fa
--- /dev/null
+++ b/src/lib/libast/stdio/vsnprintf.c
@@ -0,0 +1,52 @@
+/***********************************************************************
+* *
+* This software is part of the ast package *
+* Copyright (c) 1985-2011 AT&T Intellectual Property *
+* and is licensed under the *
+* Eclipse Public License, Version 1.0 *
+* by AT&T Intellectual Property *
+* *
+* A copy of the License is available at *
+* http://www.eclipse.org/org/documents/epl-v10.html *
+* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
+* *
+* Information and Software Systems Research *
+* AT&T Research *
+* Florham Park NJ *
+* *
+* Glenn Fowler <gsf@research.att.com> *
+* David Korn <dgk@research.att.com> *
+* Phong Vo <kpv@research.att.com> *
+* *
+***********************************************************************/
+#pragma prototyped
+
+#include "stdhdr.h"
+
+int
+vsnprintf(char* s, int n, const char* form, va_list args)
+{
+ Sfio_t* f;
+ ssize_t rv;
+
+ /* make a temp stream */
+ if(!(f = sfnew(NIL(Sfio_t*),NIL(char*),(size_t)SF_UNBOUND,
+ -1,SF_WRITE|SF_STRING)) )
+ return -1;
+
+ if((rv = sfvprintf(f,form,args)) >= 0 )
+ { if(s && n > 0)
+ { if((rv+1) >= n)
+ n--;
+ else
+ n = rv;
+ memcpy(s, f->data, n);
+ s[n] = 0;
+ }
+ _Sfi = rv;
+ }
+
+ sfclose(f);
+
+ return rv;
+}