diff options
Diffstat (limited to 'bin/sh/bltin')
| -rw-r--r-- | bin/sh/bltin/bltin.h | 105 | ||||
| -rw-r--r-- | bin/sh/bltin/echo.1 | 109 | ||||
| -rw-r--r-- | bin/sh/bltin/echo.c | 122 |
3 files changed, 336 insertions, 0 deletions
diff --git a/bin/sh/bltin/bltin.h b/bin/sh/bltin/bltin.h new file mode 100644 index 0000000..b5669f1 --- /dev/null +++ b/bin/sh/bltin/bltin.h @@ -0,0 +1,105 @@ +/* $NetBSD: bltin.h,v 1.15 2017/06/26 22:09:16 kre 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. + * + * @(#)bltin.h 8.1 (Berkeley) 5/31/93 + */ + +/* + * This file is included by programs which are optionally built into the + * shell. + * + * We always define SHELL_BUILTIN, to allow other included headers to + * hide some of their symbols if appropriate. + * + * If SHELL is defined, we try to map the standard UNIX library routines + * to ash routines using defines. + */ + +#define SHELL_BUILTIN +#include "../shell.h" +#include "../mystring.h" +#ifdef SHELL +#include "../output.h" +#include "../error.h" +#include "../var.h" +#undef stdout +#undef stderr +#undef putc +#undef putchar +#undef fileno +#undef ferror +#define FILE struct output +#define stdout out1 +#define stderr out2 +#ifdef __GNUC__ +#define _RETURN_INT(x) ({(x); 0;}) /* map from void foo() to int bar() */ +#else +#define _RETURN_INT(x) ((x), 0) /* map from void foo() to int bar() */ +#endif +#define fprintf(...) _RETURN_INT(outfmt(__VA_ARGS__)) +#define printf(...) _RETURN_INT(out1fmt(__VA_ARGS__)) +#define putc(c, file) _RETURN_INT(outc(c, file)) +#define putchar(c) _RETURN_INT(out1c(c)) +#define fputs(...) _RETURN_INT(outstr(__VA_ARGS__)) +#define fflush(f) _RETURN_INT(flushout(f)) +#define fileno(f) ((f)->fd) +#define ferror(f) ((f)->flags & OUTPUT_ERR) +#define INITARGS(argv) +#define err sh_err +#define verr sh_verr +#define errx sh_errx +#define verrx sh_verrx +#define warn sh_warn +#define vwarn sh_vwarn +#define warnx sh_warnx +#define vwarnx sh_vwarnx +#define exit sh_exit +#define setprogname(s) +#define getprogname() commandname +#define setlocate(l,s) 0 + +#define getenv(p) bltinlookup((p),0) + +#else /* ! SHELL */ +#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 /* ! SHELL */ + +pointer stalloc(int); + +int echocmd(int, char **); + + +extern const char *commandname; diff --git a/bin/sh/bltin/echo.1 b/bin/sh/bltin/echo.1 new file mode 100644 index 0000000..13b3c6a --- /dev/null +++ b/bin/sh/bltin/echo.1 @@ -0,0 +1,109 @@ +.\" $NetBSD: echo.1,v 1.14 2017/07/03 21:33:24 wiz 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. +.\" 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. 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 +.Sh NAME +.Nm echo +.Nd produce message in a shell script +.Sh SYNOPSIS +.Nm +.Op Fl n | Fl e +.Ar args ... +.Sh DESCRIPTION +.Nm +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 +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 +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 +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 0000000..440e01b --- /dev/null +++ b/bin/sh/bltin/echo.c @@ -0,0 +1,122 @@ +/* $NetBSD: echo.c,v 1.14 2008/10/12 01:40:37 dholland 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. + */ + +#include <sys/cdefs.h> +__RCSID("$NetBSD: echo.c,v 1.14 2008/10/12 01:40:37 dholland Exp $"); + +#define main echocmd + +#include "bltin.h" + +int +main(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 (equal(p, "-n")) { + nflag = 1; + ap++; + } else if (equal(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'); + fflush(stdout); + if (ferror(stdout)) + return 1; + return 0; +} |