Imported Upstream version 93u+upstream

1 files changed, 96 insertions, 0 deletions

diff --git a/src/lib/libast/stdio/getdelim.c b/src/lib/libast/stdio/getdelim.c
new file mode 100644
index 0000000..331125a
--- /dev/null
+++ b/src/lib/libast/stdio/getdelim.c
@@ -0,0 +1,96 @@
+/***********************************************************************
+*                                                                      *
+*               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"
+
+ssize_t
+getdelim(char** sp, size_t* np, int delim, Sfio_t* f)
+{
+	ssize_t		m;
+	ssize_t		n;
+	ssize_t		k;
+	ssize_t		p;
+	uchar*		s;
+	uchar*		ps;
+	SFMTXDECL(f);
+
+	STDIO_INT(f, "getdelim", ssize_t, (char**, size_t*, int, Sfio_t*), (sp, np, delim, f))
+
+	SFMTXENTER(f, -1);
+
+	if(delim < 0 || delim > 255 || !sp || !np) /* bad parameters */
+		SFMTXRETURN(f, -1);
+
+	if(f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0)
+		SFMTXRETURN(f, -1);
+
+	SFLOCK(f,0);
+
+	if(!(s = (uchar*)(*sp)) || (n = *np) < 0)
+		{ s = NIL(uchar*); n = 0; }
+	for(m = 0;; )
+	{	/* read new data */
+		if((p = f->endb - (ps = f->next)) <= 0 )
+		{	f->getr = delim;
+			f->mode |= SF_RC;
+			if(SFRPEEK(f,ps,p) <= 0)
+			{	m = -1;
+				break;
+			}
+		}
+
+		for(k = 0; k < p; ++k) /* find the delimiter */
+		{	if(ps[k] == delim)
+			{	k += 1; /* include delim in copying */
+				break;
+			}
+		}
+
+		if((m+k+1) >= n ) /* make sure there is space */
+		{	n = ((m+k+15)/8)*8;
+			if(!(s = (uchar*)realloc(s, n)) )
+			{	*sp = 0; *np = 0;
+				m = -1;
+				break;
+			}
+			*sp = (char*)s; *np = n;
+		}
+
+		memcpy(s+m, ps, k); m += k;
+		f->next = ps+k; /* skip copied data in buffer */
+
+		if(s[m-1] == delim)
+		{	s[m] = 0; /* 0-terminated */
+			break;
+		}
+	}
+
+	SFOPEN(f,0);
+	SFMTXRETURN(f,m);
+}
+
+ssize_t
+__getdelim(char** sp, size_t* np, int delim, Sfio_t* f)
+{
+	return getdelim(sp, np, delim, f);
+}