6437624 RFE: Add ksh93 (as /usr/bin/ksh93) and libshell.so to OS/Net

6505835 AST tools and library (libpp) required for creating l10n messages for ksh93
PSARC/2006/550 Korn Shell 93 Integration
PSARC/2006/587 /etc/ksh.kshrc for ksh93
PSARC/2007/035 ksh93 Amendments
Contributed by Roland Mainz <roland.mainz@nrubsig.org>

--HG--
rename : usr/src/lib/libcmd/common/mapfile-vers => deleted_files/usr/src/lib/libcmd/common/mapfile-vers
rename : usr/src/lib/libcmd/common/placeholder.c => deleted_files/usr/src/lib/libcmd/common/placeholder.c

1 files changed, 110 insertions, 0 deletions

diff --git a/usr/src/lib/libast/common/stdio/fgets.c b/usr/src/lib/libast/common/stdio/fgets.c
new file mode 100644
index 0000000000..2b3f9d309f
--- /dev/null
+++ b/usr/src/lib/libast/common/stdio/fgets.c
@@ -0,0 +1,110 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
+*                      and is licensed under the                       *
+*                  Common Public License, Version 1.0                  *
+*                      by AT&T Knowledge Ventures                      *
+*                                                                      *
+*                A copy of the License is available at                 *
+*            http://www.opensource.org/licenses/cpl1.0.txt             *
+*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
+*                                                                      *
+*              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"
+
+extern char*
+_stdgets(Sfio_t* f, char* us, int n, int isgets)
+{
+	int		p;
+	unsigned char*	is;
+	unsigned char*	ps;
+
+	if(n <= 0 || !us || (f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0))
+		return NIL(char*);
+
+	SFLOCK(f,0);
+
+	n -= 1;
+	is = (uchar*)us;
+	
+	while(n)
+	{	/* peek the read buffer for data */
+		if((p = f->endb - (ps = f->next)) <= 0 )
+		{	f->getr = '\n';
+			f->mode |= SF_RC;
+			if(SFRPEEK(f,ps,p) <= 0)
+				break;
+		}
+
+		if(p > n)
+			p = n;
+
+#if _lib_memccpy
+		if((ps = (uchar*)memccpy((char*)is,(char*)ps,'\n',p)) != NIL(uchar*))
+			p = ps-is;
+		is += p;
+		ps  = f->next+p;
+#else
+		if(!(f->flags&(SF_BOTH|SF_MALLOC)))
+		{	while(p-- && (*is++ = *ps++) != '\n')
+				;
+			p = ps-f->next;
+		}
+		else
+		{	reg int	c = ps[p-1];
+			if(c != '\n')
+				ps[p-1] = '\n';
+			while((*is++ = *ps++) != '\n')
+				;
+			if(c != '\n')
+			{	f->next[p-1] = c;
+				if((ps-f->next) >= p)
+					is[-1] = c;
+			}
+		}
+#endif
+
+		/* gobble up read data and continue */
+		f->next = ps;
+		if(is[-1] == '\n')
+			break;
+		else if(n > 0)
+			n -= p;
+	}
+
+	if((_Sfi = is - ((uchar*)us)) <= 0)
+		us = NIL(char*);
+	else if(isgets && is[-1] == '\n')
+	{	is[-1] = '\0';
+		_Sfi -= 1;
+	}
+	else	*is = '\0';
+
+	SFOPEN(f,0);
+	return us;
+}
+
+char*
+fgets(char* s, int n, Sfio_t* f)
+{
+	STDIO_PTR(f, "fgets", char*, (char*, int, Sfio_t*), (s, n, f))
+
+	return _stdgets(f, s, n, 0);
+}
+
+char*
+gets(char* s)
+{
+	return _stdgets(sfstdin, s, BUFSIZ, 1);
+}