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, 111 insertions, 0 deletions

diff --git a/usr/src/lib/libast/common/path/pathpath.c b/usr/src/lib/libast/common/path/pathpath.c
new file mode 100644
index 0000000000..520fdb9e52
--- /dev/null
+++ b/usr/src/lib/libast/common/path/pathpath.c
@@ -0,0 +1,111 @@
+/***********************************************************************
+*                                                                      *
+*               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
+/*
+ * Glenn Fowler
+ * AT&T Research
+ *
+ * return full path to p with mode access using $PATH
+ * a!=0 enables related root search
+ * a!=0 && a!="" searches a dir first
+ * the related root must have a bin subdir
+ * p==0 sets the cached relative dir to a
+ * full path returned in path buffer
+ * if path==0 then the space is malloc'd
+ */
+
+#include <ast.h>
+
+char*
+pathpath(register char* path, const char* p, const char* a, int mode)
+{
+	register char*	s;
+	char*		x;
+	char		buf[PATH_MAX];
+
+	static char*	cmd;
+
+	if (!path)
+		path = buf;
+	if (!p)
+	{
+		if (cmd)
+			free(cmd);
+		cmd = a ? strdup(a) : (char*)0;
+		return 0;
+	}
+	if (strlen(p) < PATH_MAX)
+	{
+		strcpy(path, p);
+		if (pathexists(path, mode))
+		{
+			if (*p != '/' && (mode & PATH_ABSOLUTE))
+			{
+				getcwd(buf, sizeof(buf));
+				s = buf + strlen(buf);
+				sfsprintf(s, sizeof(buf) - (s - buf), "/%s", p);
+				if (path != buf)
+					strcpy(path, buf);
+			}
+			return (path == buf) ? strdup(path) : path;
+		}
+	}
+	if (*p == '/')
+		a = 0;
+	else if (s = (char*)a)
+	{
+		x = s;
+		if (strchr(p, '/'))
+		{
+			a = p;
+			p = "..";
+		}
+		else
+			a = 0;
+		if ((!cmd || *cmd) && (strchr(s, '/') || (s = cmd)))
+		{
+			if (!cmd && *s == '/')
+				cmd = strdup(s);
+			if (strlen(s) < (sizeof(buf) - 6))
+			{
+				s = strcopy(path, s);
+				for (;;)
+				{
+					do if (s <= path) goto normal; while (*--s == '/');
+					do if (s <= path) goto normal; while (*--s != '/');
+					strcpy(s + 1, "bin");
+					if (pathexists(path, PATH_EXECUTE))
+					{
+						if (s = pathaccess(path, path, p, a, mode))
+							return path == buf ? strdup(s) : s;
+						goto normal;
+					}
+				}
+			normal: ;
+			}
+		}
+	}
+	x = !a && strchr(p, '/') ? "" : pathbin();
+	if (!(s = pathaccess(path, x, p, a, mode)) && !*x && (x = getenv("FPATH")))
+		s = pathaccess(path, x, p, a, mode);
+	return (s && path == buf) ? strdup(s) : s;
+}