167 lines
4.1 KiB
C
167 lines
4.1 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)miscbltin.c 8.2 (Berkeley) 4/16/94";
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#endif /* not lint */
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/*
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* Miscelaneous builtins.
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*/
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#include "shell.h"
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#include "options.h"
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#include "var.h"
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#include "output.h"
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#include "memalloc.h"
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#include "error.h"
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#include "mystring.h"
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#undef eflag
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extern char **argptr; /* argument list for builtin command */
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/*
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* The read builtin. The -e option causes backslashes to escape the
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* following character.
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*
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* This uses unbuffered input, which may be avoidable in some cases.
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*/
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readcmd(argc, argv) char **argv; {
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char **ap;
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int backslash;
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char c;
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int eflag;
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char *prompt;
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char *ifs;
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char *p;
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int startword;
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int status;
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int i;
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eflag = 0;
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prompt = NULL;
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while ((i = nextopt("ep:")) != '\0') {
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if (i == 'p')
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prompt = optarg;
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else
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eflag = 1;
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}
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if (prompt && isatty(0)) {
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out2str(prompt);
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flushall();
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}
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if (*(ap = argptr) == NULL)
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error("arg count");
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if ((ifs = bltinlookup("IFS", 1)) == NULL)
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ifs = nullstr;
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status = 0;
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startword = 1;
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backslash = 0;
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STARTSTACKSTR(p);
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for (;;) {
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if (read(0, &c, 1) != 1) {
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status = 1;
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break;
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}
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if (c == '\0')
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continue;
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if (backslash) {
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backslash = 0;
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if (c != '\n')
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STPUTC(c, p);
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continue;
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}
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if (eflag && c == '\\') {
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backslash++;
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continue;
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}
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if (c == '\n')
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break;
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if (startword && *ifs == ' ' && strchr(ifs, c)) {
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continue;
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}
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startword = 0;
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if (backslash && c == '\\') {
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if (read(0, &c, 1) != 1) {
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status = 1;
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break;
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}
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STPUTC(c, p);
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} else if (ap[1] != NULL && strchr(ifs, c) != NULL) {
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STACKSTRNUL(p);
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setvar(*ap, stackblock(), 0);
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ap++;
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startword = 1;
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STARTSTACKSTR(p);
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} else {
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STPUTC(c, p);
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}
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}
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STACKSTRNUL(p);
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setvar(*ap, stackblock(), 0);
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while (*++ap != NULL)
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setvar(*ap, nullstr, 0);
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return status;
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}
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umaskcmd(argc, argv) char **argv; {
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int mask;
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char *p;
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int i;
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if ((p = argv[1]) == NULL) {
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INTOFF;
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mask = umask(0);
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umask(mask);
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INTON;
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out1fmt("%.4o\n", mask); /* %#o might be better */
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} else {
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mask = 0;
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do {
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if ((unsigned)(i = *p - '0') >= 8)
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error("Illegal number: %s", argv[1]);
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mask = (mask << 3) + i;
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} while (*++p != '\0');
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umask(mask);
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}
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return 0;
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}
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