3 files changed, 289 insertions, 0 deletions

diff --git a/bin/sh/bltin/bltin.h b/bin/sh/bltin/bltin.h
new file mode 100644
index 000000000000..c8bf8d58ea8b
--- /dev/null
+++ b/bin/sh/bltin/bltin.h
@@ -0,0 +1,74 @@
+/*-
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ *	@(#)bltin.h	8.1 (Berkeley) 5/31/93
+ */
+
+/*
+ * This file is included by programs which are optionally built into the
+ * shell.  If SHELL is defined, we try to map the standard UNIX library
+ * routines to ash routines using defines.
+ */
+
+#include "../shell.h"
+#include "../mystring.h"
+#ifdef SHELL
+#include "../output.h"
+#define stdout out1
+#define stderr out2
+#define printf out1fmt
+#define putc(c, file)	outc(c, file)
+#define putchar(c)	out1c(c)
+#define fprintf outfmt
+#define fputs outstr
+#define fflush flushout
+#define INITARGS(argv)
+#else
+#undef NULL
+#include <stdio.h>
+#undef main
+#define INITARGS(argv)	if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else
+#endif
+
+#ifdef __STDC__
+pointer stalloc(int);
+void error(char *, ...);
+#else
+pointer stalloc();
+void error();
+#endif
+
+
+extern char *commandname;
diff --git a/bin/sh/bltin/echo.1 b/bin/sh/bltin/echo.1
new file mode 100644
index 000000000000..d2cb8d12c18f
--- /dev/null
+++ b/bin/sh/bltin/echo.1
@@ -0,0 +1,111 @@
+.\" 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.
+.\" Copyright 1989 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. 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.1	8.1 (Berkeley) 5/31/93
+.\"
+.Dd May 31, 1993
+.Dt ECHO 1
+.Os BSD 4.4
+.Sh NAME
+.Nm echo
+.Nd produce message in a shell script
+.Sh SYNOPSIS
+.Nm echo
+.Op Fl n | Fl e
+.Ar args... 
+.Sh DESCRIPTION
+.Nm Echo
+prints its arguments on the standard output, separated by spaces.
+Unless the
+.Fl n
+option is present, a newline is output following the arguments.
+The
+.Fl e
+option causes
+.Nm echo
+to treat the escape sequences specially, as described in the following
+paragraph.
+The
+.Fl e
+option is the default, and is provided solely for compatibility with
+other systems.
+Only one of the options
+.Fl n
+and
+.Fl e
+may be given.
+.Pp
+If any of the following sequences of characters is encountered during
+output, the sequence is not output.  Instead, the specified action is
+performed:
+.Bl -tag -width indent
+.It Li \eb
+A backspace character is output.
+.It Li \ec
+Subsequent output is suppressed.  This is normally used at the end of the
+last argument to suppress the trailing newline that
+.Nm echo
+would otherwise output.
+.It Li \ef
+Output a form feed.
+.It Li \en
+Output a newline character.
+.It Li \er
+Output a carriage return.
+.It Li \et
+Output a (horizontal) tab character.
+.It Li \ev
+Output a vertical tab.
+.It Li \e0 Ns Ar digits
+Output the character whose value is given by zero to three digits.
+If there are zero digits, a nul character is output.
+.It Li \e\e
+Output a backslash.
+.El
+.Sh HINTS
+Remember that backslash is special to the shell and needs to be escaped.
+To output a message to standard error, say
+.Pp
+.D1  echo message >&2
+.Sh BUGS
+The octal character escape mechanism
+.Pq Li \e0 Ns Ar digits
+differs from the
+C language mechanism.
+.Pp
+There is no way to force
+.Nm echo
+to treat its arguments literally, rather than interpreting them as
+options and escape sequences.
diff --git a/bin/sh/bltin/echo.c b/bin/sh/bltin/echo.c
new file mode 100644
index 000000000000..c1d897027748
--- /dev/null
+++ b/bin/sh/bltin/echo.c
@@ -0,0 +1,104 @@
+/*-
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#define main echocmd
+
+#include "bltin.h"
+
+/* #define eflag 1 */
+
+main(argc, argv)  char **argv; {
+	register char **ap;
+	register char *p;
+	register char c;
+	int count;
+	int nflag = 0;
+#ifndef eflag
+	int eflag = 0;
+#endif
+
+	ap = argv;
+	if (argc)
+		ap++;
+	if ((p = *ap) != NULL) {
+		if (equal(p, "-n")) {
+			nflag++;
+			ap++;
+		} else if (equal(p, "-e")) {
+#ifndef eflag
+			eflag++;
+#endif
+			ap++;
+		}
+	}
+	while ((p = *ap++) != NULL) {
+		while ((c = *p++) != '\0') {
+			if (c == '\\' && eflag) {
+				switch (*p++) {
+				case 'b':  c = '\b';  break;
+				case 'c':  return 0;		/* exit */
+				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:
+					p--;
+					break;
+				}
+			}
+			putchar(c);
+		}
+		if (*ap)
+			putchar(' ');
+	}
+	if (! nflag)
+		putchar('\n');
+	return 0;
+}