1 files changed, 142 insertions, 0 deletions
diff --git a/cpukit/libmisc/shell/main_echo.c b/cpukit/libmisc/shell/main_echo.c
new file mode 100644
index 0000000000..8f868a2f29
--- /dev/null
+++ b/cpukit/libmisc/shell/main_echo.c
@@ -0,0 +1,142 @@
+/*  $NetBSD: echo.c,v 1.12 2005/02/06 04:43:43 perry Exp $  */
+
+/*-
+ * Copyright (c) 1991, 1993
+ *  The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *  @(#)echo.c  8.1 (Berkeley) 5/31/93
+ */
+
+/*
+ * Echo command.
+ *
+ * echo is steeped in tradition - several of them!
+ * netbsd has supported 'echo [-n | -e] args' in spite of -e not being
+ * documented anywhere.
+ * Posix requires that -n be supported, output from strings containing
+ * \ is implementation defined
+ * The Single Unix Spec requires that \ escapes be treated as if -e
+ * were set, but that -n not be treated as an option.
+ * (ksh supports 'echo [-eEn] args', but not -- so that it is actually
+ * impossible to actually output '-n')
+ *
+ * It is suggested that 'printf "%b" "string"' be used to get \ sequences
+ * expanded.  printf is now a builtin of netbsd's sh and csh.
+ */
+
+/*
+ *  $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rtems.h>
+#include <rtems/shell.h>
+#include "internal.h"
+
+
+
+int rtems_shell_main_echo(
+  int   argc,
+  char *argv[]
+)
+{
+  char **ap;
+  char *p;
+  char c;
+  int count;
+  int nflag = 0;
+  int eflag = 0;
+
+  ap = argv;
+  if (argc)
+    ap++;
+
+  if ((p = *ap) != NULL) {
+    if (!strcmp(p, "-n")) {
+      nflag = 1;
+      ap++;
+    } else if (!strcmp(p, "-e")) {
+      eflag = 1;
+      ap++;
+    }
+  }
+
+  while ((p = *ap++) != NULL) {
+    while ((c = *p++) != '\0') {
+      if (c == '\\' && eflag) {
+        switch (*p++) {
+        case 'a':  c = '\a';  break;  /* bell */
+        case 'b':  c = '\b';  break;
+        case 'c':  return 0;    /* exit */
+        case 'e':  c =  033;  break;  /* escape */
+        case 'f':  c = '\f';  break;
+        case 'n':  c = '\n';  break;
+        case 'r':  c = '\r';  break;
+        case 't':  c = '\t';  break;
+        case 'v':  c = '\v';  break;
+        case '\\':  break;    /* c = '\\' */
+        case '0':
+          c = 0;
+          count = 3;
+          while (--count >= 0 && (unsigned)(*p - '0') < 8)
+            c = (c << 3) + (*p++ - '0');
+          break;
+        default:
+          /* Output the '/' and char following */
+          p--;
+          break;
+        }
+      }
+      putchar(c);
+    }
+    if (*ap)
+      putchar(' ');
+  }
+  if (! nflag)
+    putchar('\n');
+  return 0;
+}
+
+rtems_shell_cmd_t rtems_shell_ECHO_Command = {
+  "echo",                        /* name */
+  "echo [args]",                 /* usage */
+  "misc",                        /* topic */
+  rtems_shell_main_echo,         /* command */
+  NULL,                          /* alias */
+  NULL                           /* next */
+};