From f9ab90d9d6d02989a075d0f0074496d5b1045e4b Mon Sep 17 00:00:00 2001 From: rgrimes Date: Fri, 27 May 1994 12:33:43 +0000 Subject: BSD 4.4 Lite Usr.bin Sources --- usr.bin/apply/Makefile | 5 ++ usr.bin/apply/apply.1 | 129 +++++++++++++++++++++++++++ usr.bin/apply/apply.c | 234 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 368 insertions(+) create mode 100644 usr.bin/apply/Makefile create mode 100644 usr.bin/apply/apply.1 create mode 100644 usr.bin/apply/apply.c (limited to 'usr.bin/apply') diff --git a/usr.bin/apply/Makefile b/usr.bin/apply/Makefile new file mode 100644 index 0000000..59f358e --- /dev/null +++ b/usr.bin/apply/Makefile @@ -0,0 +1,5 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= apply + +.include diff --git a/usr.bin/apply/apply.1 b/usr.bin/apply/apply.1 new file mode 100644 index 0000000..dd7a9ee --- /dev/null +++ b/usr.bin/apply/apply.1 @@ -0,0 +1,129 @@ +.\" Copyright (c) 1983, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" 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. +.\" +.\" @(#)apply.1 8.2 (Berkeley) 4/4/94 +.\" +.Dd April 4, 1994 +.Dt APPLY 1 +.Os BSD 4.2 +.Sh NAME +.Nm apply +.Nd apply a command to a set of arguments +.Sh SYNOPSIS +.Nm apply +.Op Fl a Ns Ar c +.Op Fl Ns Ar # +.Ar command argument ... +.Sh DESCRIPTION +.Nm Apply +runs the named +.Ar command +on each +argument +.Ar argument +in turn. +.Pp +Character sequences of the form +.Dq Li \&%d +in +.Ar command , +where +.Dq Li d +is a digit from 1 to 9, are replaced by the +.Li d Ns \'th +following unused +.Ar argument . +In this case, the largest digit number of arguments are discarded for +each execution of +.Ar command . +.Pp +The options are as follows: +.Bl -tag -width "-ac" +.It Fl Ns Ar # +Normally arguments are taken singly; the optional number +.Fl # +specifies the number of arguments to be passed to +.Ar command . +If the number is zero, +.Ar command +is run, without arguments, once for each +.Ar argument . +.Pp +If any sequences of +.Dq Li \&%d +occur in command, the +.Fl n +option is ignored. +.It Fl a Ns Ar c +The use of the character +.Dq Li % +as a magic character may be changed with the +.Fl a +option. +.El +.Sh ENVIRONMENT VARIABLES +The following environment variable affects the execution of +.Nm apply : +.Bl -tag -width SHELL +.It Ev SHELL +Pathname of shell to use. +If this variable is not defined, the Bourne shell is used. +.El +.Sh EXAMPLES +.Bl -tag -width apply -compact +.It Li "apply echo a*" +is similar to ls(1); +.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3" +compares the `a' files to the `b' files; +.It Li "apply \-0 who 1 2 3 4 5" +runs who(1) 5 times; and +.It Li "apply \'ln %1 /usr/joe\'" * +links all files in the current directory to the directory +.Pa /usr/joe . +.El +.Sh Files +.Bl -tag -width /bin/sh -compact +.It Pa /bin/sh +Default shell +.El +.Sh AUTHOR +Rob Pike +.Sh BUGS +Shell metacharacters in +.Ar command +may have bizarre effects; it is best to enclose complicated +commands in single quotes +.Pq Sq . +.Sh HISTORY +The +.Nm +command appeared in +.Bx 4.2 . diff --git a/usr.bin/apply/apply.c b/usr.bin/apply/apply.c new file mode 100644 index 0000000..a8634a9 --- /dev/null +++ b/usr.bin/apply/apply.c @@ -0,0 +1,234 @@ +/*- + * Copyright (c) 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry. + * + * 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. + */ + +#ifndef lint +static char sccsid[] = "@(#)apply.c 8.4 (Berkeley) 4/4/94"; +#endif /* not lint */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +void usage __P((void)); +int system __P((const char *)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + int ch, clen, debug, i, l, magic, n, nargs, rval; + char *c, *cmd, *p, *q; + + debug = 0; + magic = '%'; /* Default magic char is `%'. */ + nargs = -1; + while ((ch = getopt(argc, argv, "a:d0123456789")) != EOF) + switch (ch) { + case 'a': + if (optarg[1] != '\0') + errx(1, + "illegal magic character specification."); + magic = optarg[0]; + break; + case 'd': + debug = 1; + break; + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + if (nargs != -1) + errx(1, + "only one -# argument may be specified."); + nargs = optopt - '0'; + break; + default: + usage(); + } + argc -= optind; + argv += optind; + + if (argc < 2) + usage(); + + /* + * The command to run is argv[0], and the args are argv[1..]. + * Look for %digit references in the command, remembering the + * largest one. + */ + for (n = 0, p = argv[0]; *p != '\0'; ++p) + if (p[0] == magic && isdigit(p[1]) && p[1] != '0') { + ++p; + if (p[0] - '0' > n) + n = p[0] - '0'; + } + + /* + * If there were any %digit references, then use those, otherwise + * build a new command string with sufficient %digit references at + * the end to consume (nargs) arguments each time round the loop. + * Allocate enough space to hold the maximum command. + */ + if ((cmd = malloc(sizeof("exec ") - 1 + + strlen(argv[0]) + 9 * (sizeof(" %1") - 1) + 1)) == NULL) + err(1, NULL); + + if (n == 0) { + /* If nargs not set, default to a single argument. */ + if (nargs == -1) + nargs = 1; + + p = cmd; + p += sprintf(cmd, "exec %s", argv[0]); + for (i = 1; i <= nargs; i++) + p += sprintf(p, " %c%d", magic, i); + + /* + * If nargs set to the special value 0, eat a single + * argument for each command execution. + */ + if (nargs == 0) + nargs = 1; + } else { + (void)sprintf(cmd, "exec %s", argv[0]); + nargs = n; + } + + /* + * Grab some space in which to build the command. Allocate + * as necessary later, but no reason to build it up slowly + * for the normal case. + */ + if ((c = malloc(clen = 1024)) == NULL) + err(1, NULL); + + /* + * (argc) and (argv) are still offset by one to make it simpler to + * expand %digit references. At the end of the loop check for (argc) + * equals 1 means that all the (argv) has been consumed. + */ + for (rval = 0; argc > nargs; argc -= nargs, argv += nargs) { + /* + * Find a max value for the command length, and ensure + * there's enough space to build it. + */ + for (l = strlen(cmd), i = 0; i < nargs; i++) + l += strlen(argv[i]); + if (l > clen && (c = realloc(c, clen = l)) == NULL) + err(1, NULL); + + /* Expand command argv references. */ + for (p = cmd, q = c; *p != '\0'; ++p) + if (p[0] == magic && isdigit(p[1]) && p[1] != '0') + q += sprintf(q, "%s", argv[(++p)[0] - '0']); + else + *q++ = *p; + + /* Terminate the command string. */ + *q = '\0'; + + /* Run the command. */ + if (debug) + (void)printf("%s\n", c); + else + if (system(c)) + rval = 1; + } + + if (argc != 1) + errx(1, "expecting additional argument%s after \"%s\"", + (nargs - argc) ? "s" : "", argv[argc - 1]); + exit(rval); +} + +/* + * system -- + * Private version of system(3). Use the user's SHELL environment + * variable as the shell to execute. + */ +int +system(command) + const char *command; +{ + static char *name, *shell; + union wait pstat; + pid_t pid; + int omask; + sig_t intsave, quitsave; + + if (shell == NULL) { + if ((shell = getenv("SHELL")) == NULL) + shell = _PATH_BSHELL; + if ((name = strrchr(shell, '/')) == NULL) + name = shell; + else + ++name; + } + if (!command) /* just checking... */ + return(1); + + omask = sigblock(sigmask(SIGCHLD)); + switch(pid = vfork()) { + case -1: /* error */ + err(1, "fork"); + case 0: /* child */ + (void)sigsetmask(omask); + execl(shell, name, "-c", command, NULL); + err(1, "%s", shell); + } + intsave = signal(SIGINT, SIG_IGN); + quitsave = signal(SIGQUIT, SIG_IGN); + pid = waitpid(pid, (int *)&pstat, 0); + (void)sigsetmask(omask); + (void)signal(SIGINT, intsave); + (void)signal(SIGQUIT, quitsave); + return(pid == -1 ? -1 : pstat.w_status); +} + +void +usage() +{ + + (void)fprintf(stderr, + "usage: apply [-a magic] [-0123456789] command arguments ...\n"); + exit(1); +} -- cgit v1.1