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, 65 insertions, 0 deletions

diff --git a/usr/src/lib/libpp/common/ppcontext.c b/usr/src/lib/libpp/common/ppcontext.c
new file mode 100644
index 0000000000..220481ab87
--- /dev/null
+++ b/usr/src/lib/libpp/common/ppcontext.c
@@ -0,0 +1,65 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*           Copyright (c) 1986-2007 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>                  *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+/*
+ * Glenn Fowler
+ * AT&T Research
+ *
+ * preprocessor context switch
+ *
+ *	args		op				return
+ *	(0,0)		free current context		0
+ *	(0,1)		save current context		current
+ *	(p,0)		free context p			0
+ *	(p,1)		make p current context		previous
+ */
+
+#include "pplib.h"
+
+void*
+ppcontext(void* context, int flags)
+{
+	struct ppcontext*	np = (struct ppcontext*)context;
+	struct ppcontext*	op;
+
+	if (flags & 01)
+	{
+		if (!(op = pp.context)) op = pp.context = newof(0, struct ppcontext, 1, 0);
+		memcpy(op, _PP_CONTEXT_BASE_, sizeof(struct ppcontext));
+	}
+	else
+	{
+		if (!(op = np)) op = (struct ppcontext*)_PP_CONTEXT_BASE_;
+		if (op->filtab) hashfree(op->filtab);
+		if (op->prdtab) hashfree(op->prdtab);
+		if (op->symtab) hashfree(op->symtab);
+		if (op->date) free(op->date);
+		if (op->time) free(op->time);
+		if (np)
+		{
+			free(np);
+			np = 0;
+		}
+		memzero(op, sizeof(struct ppcontext));
+		op = 0;
+	}
+	if (np) memcpy(_PP_CONTEXT_BASE_, np, sizeof(struct ppcontext));
+	return((void*)op);
+}