1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 5/4/95";
36#endif
37#endif /* not lint */
38#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 5/4/95";
36#endif
37#endif /* not lint */
38#include <sys/cdefs.h>
|
39__FBSDID("$FreeBSD: head/bin/sh/options.c 206182 2010-04-05 14:15:51Z jilles $");
| 39__FBSDID("$FreeBSD: head/bin/sh/options.c 213811 2010-10-13 22:18:03Z obrien $");
|
40
41#include <signal.h>
42#include <unistd.h>
43#include <stdlib.h>
44
45#include "shell.h"
46#define DEFINE_OPTIONS
47#include "options.h"
48#undef DEFINE_OPTIONS
49#include "nodes.h" /* for other header files */
50#include "eval.h"
51#include "jobs.h"
52#include "input.h"
53#include "output.h"
54#include "trap.h"
55#include "var.h"
56#include "memalloc.h"
57#include "error.h"
58#include "mystring.h"
59#ifndef NO_HISTORY
60#include "myhistedit.h"
61#endif
62
63char *arg0; /* value of $0 */
64struct shparam shellparam; /* current positional parameters */
65char **argptr; /* argument list for builtin commands */
66char *shoptarg; /* set by nextopt (like getopt) */
67char *nextopt_optptr; /* used by nextopt */
68
69char *minusc; /* argument to -c option */
70
71
| 40
41#include <signal.h>
42#include <unistd.h>
43#include <stdlib.h>
44
45#include "shell.h"
46#define DEFINE_OPTIONS
47#include "options.h"
48#undef DEFINE_OPTIONS
49#include "nodes.h" /* for other header files */
50#include "eval.h"
51#include "jobs.h"
52#include "input.h"
53#include "output.h"
54#include "trap.h"
55#include "var.h"
56#include "memalloc.h"
57#include "error.h"
58#include "mystring.h"
59#ifndef NO_HISTORY
60#include "myhistedit.h"
61#endif
62
63char *arg0; /* value of $0 */
64struct shparam shellparam; /* current positional parameters */
65char **argptr; /* argument list for builtin commands */
66char *shoptarg; /* set by nextopt (like getopt) */
67char *nextopt_optptr; /* used by nextopt */
68
69char *minusc; /* argument to -c option */
70
71
|
72STATIC void options(int);
73STATIC void minus_o(char *, int);
74STATIC void setoption(int, int);
75STATIC int getopts(char *, char *, char **, char ***, char **);
| 72static void options(int);
73static void minus_o(char *, int);
74static void setoption(int, int);
75static int getopts(char *, char *, char **, char ***, char **);
|
76
77
78/*
79 * Process the shell command line arguments.
80 */
81
82void
83procargs(int argc, char **argv)
84{
85 int i;
86
87 argptr = argv;
88 if (argc > 0)
89 argptr++;
90 for (i = 0; i < NOPTS; i++)
91 optlist[i].val = 2;
92 privileged = (getuid() != geteuid() || getgid() != getegid());
93 options(1);
94 if (*argptr == NULL && minusc == NULL)
95 sflag = 1;
96 if (iflag != 0 && sflag == 1 && isatty(0) && isatty(1)) {
97 iflag = 1;
98 if (Eflag == 2)
99 Eflag = 1;
100 }
101 if (mflag == 2)
102 mflag = iflag;
103 for (i = 0; i < NOPTS; i++)
104 if (optlist[i].val == 2)
105 optlist[i].val = 0;
106 arg0 = argv[0];
107 if (sflag == 0 && minusc == NULL) {
108 commandname = arg0 = *argptr++;
109 setinputfile(commandname, 0);
110 }
111 /* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */
112 if (argptr && minusc && *argptr)
113 arg0 = *argptr++;
114
115 shellparam.p = argptr;
116 shellparam.reset = 1;
117 /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */
118 while (*argptr) {
119 shellparam.nparam++;
120 argptr++;
121 }
122 optschanged();
123}
124
125
126void
127optschanged(void)
128{
129 setinteractive(iflag);
130#ifndef NO_HISTORY
131 histedit();
132#endif
133 setjobctl(mflag);
134}
135
136/*
137 * Process shell options. The global variable argptr contains a pointer
138 * to the argument list; we advance it past the options.
139 */
140
| 76
77
78/*
79 * Process the shell command line arguments.
80 */
81
82void
83procargs(int argc, char **argv)
84{
85 int i;
86
87 argptr = argv;
88 if (argc > 0)
89 argptr++;
90 for (i = 0; i < NOPTS; i++)
91 optlist[i].val = 2;
92 privileged = (getuid() != geteuid() || getgid() != getegid());
93 options(1);
94 if (*argptr == NULL && minusc == NULL)
95 sflag = 1;
96 if (iflag != 0 && sflag == 1 && isatty(0) && isatty(1)) {
97 iflag = 1;
98 if (Eflag == 2)
99 Eflag = 1;
100 }
101 if (mflag == 2)
102 mflag = iflag;
103 for (i = 0; i < NOPTS; i++)
104 if (optlist[i].val == 2)
105 optlist[i].val = 0;
106 arg0 = argv[0];
107 if (sflag == 0 && minusc == NULL) {
108 commandname = arg0 = *argptr++;
109 setinputfile(commandname, 0);
110 }
111 /* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */
112 if (argptr && minusc && *argptr)
113 arg0 = *argptr++;
114
115 shellparam.p = argptr;
116 shellparam.reset = 1;
117 /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */
118 while (*argptr) {
119 shellparam.nparam++;
120 argptr++;
121 }
122 optschanged();
123}
124
125
126void
127optschanged(void)
128{
129 setinteractive(iflag);
130#ifndef NO_HISTORY
131 histedit();
132#endif
133 setjobctl(mflag);
134}
135
136/*
137 * Process shell options. The global variable argptr contains a pointer
138 * to the argument list; we advance it past the options.
139 */
140
|
141STATIC void
| 141static void
|
142options(int cmdline)
143{
144 char *kp, *p;
145 int val;
146 int c;
147
148 if (cmdline)
149 minusc = NULL;
150 while ((p = *argptr) != NULL) {
151 argptr++;
152 if ((c = *p++) == '-') {
153 val = 1;
154 /* A "-" or "--" terminates options */
155 if (p[0] == '\0')
156 goto end_options1;
157 if (p[0] == '-' && p[1] == '\0')
158 goto end_options2;
159 /**
160 * For the benefit of `#!' lines in shell scripts,
161 * treat a string of '-- *#.*' the same as '--'.
162 * This is needed so that a script starting with:
163 * #!/bin/sh -- # -*- perl -*-
164 * will continue to work after a change is made to
165 * kern/imgact_shell.c to NOT token-ize the options
166 * specified on a '#!' line. A bit of a kludge,
167 * but that trick is recommended in documentation
168 * for some scripting languages, and we might as
169 * well continue to support it.
170 */
171 if (p[0] == '-') {
172 kp = p + 1;
173 while (*kp == ' ' || *kp == '\t')
174 kp++;
175 if (*kp == '#' || *kp == '\0')
176 goto end_options2;
177 }
178 } else if (c == '+') {
179 val = 0;
180 } else {
181 argptr--;
182 break;
183 }
184 while ((c = *p++) != '\0') {
185 if (c == 'c' && cmdline) {
186 char *q;
187#ifdef NOHACK /* removing this code allows sh -ce 'foo' for compat */
188 if (*p == '\0')
189#endif
190 q = *argptr++;
191 if (q == NULL || minusc != NULL)
192 error("Bad -c option");
193 minusc = q;
194#ifdef NOHACK
195 break;
196#endif
197 } else if (c == 'o') {
198 minus_o(*argptr, val);
199 if (*argptr)
200 argptr++;
201 } else {
202 if (c == 'p' && !val && privileged) {
203 (void) setuid(getuid());
204 (void) setgid(getgid());
205 }
206 setoption(c, val);
207 }
208 }
209 }
210 return;
211
212 /* When processing `set', a single "-" means turn off -x and -v */
213end_options1:
214 if (!cmdline) {
215 xflag = vflag = 0;
216 return;
217 }
218
219 /*
220 * When processing `set', a "--" means the remaining arguments
221 * replace the positional parameters in the active shell. If
222 * there are no remaining options, then all the positional
223 * parameters are cleared (equivalent to doing ``shift $#'').
224 */
225end_options2:
226 if (!cmdline) {
227 if (*argptr == NULL)
228 setparam(argptr);
229 return;
230 }
231
232 /*
233 * At this point we are processing options given to 'sh' on a command
234 * line. If an end-of-options marker ("-" or "--") is followed by an
235 * arg of "#", then skip over all remaining arguments. Some scripting
236 * languages (e.g.: perl) document that /bin/sh will implement this
237 * behavior, and they recommend that users take advantage of it to
238 * solve certain issues that can come up when writing a perl script.
239 * Yes, this feature is in /bin/sh to help users write perl scripts.
240 */
241 p = *argptr;
242 if (p != NULL && p[0] == '#' && p[1] == '\0') {
243 while (*argptr != NULL)
244 argptr++;
245 /* We need to keep the final argument */
246 argptr--;
247 }
248}
249
| 142options(int cmdline)
143{
144 char *kp, *p;
145 int val;
146 int c;
147
148 if (cmdline)
149 minusc = NULL;
150 while ((p = *argptr) != NULL) {
151 argptr++;
152 if ((c = *p++) == '-') {
153 val = 1;
154 /* A "-" or "--" terminates options */
155 if (p[0] == '\0')
156 goto end_options1;
157 if (p[0] == '-' && p[1] == '\0')
158 goto end_options2;
159 /**
160 * For the benefit of `#!' lines in shell scripts,
161 * treat a string of '-- *#.*' the same as '--'.
162 * This is needed so that a script starting with:
163 * #!/bin/sh -- # -*- perl -*-
164 * will continue to work after a change is made to
165 * kern/imgact_shell.c to NOT token-ize the options
166 * specified on a '#!' line. A bit of a kludge,
167 * but that trick is recommended in documentation
168 * for some scripting languages, and we might as
169 * well continue to support it.
170 */
171 if (p[0] == '-') {
172 kp = p + 1;
173 while (*kp == ' ' || *kp == '\t')
174 kp++;
175 if (*kp == '#' || *kp == '\0')
176 goto end_options2;
177 }
178 } else if (c == '+') {
179 val = 0;
180 } else {
181 argptr--;
182 break;
183 }
184 while ((c = *p++) != '\0') {
185 if (c == 'c' && cmdline) {
186 char *q;
187#ifdef NOHACK /* removing this code allows sh -ce 'foo' for compat */
188 if (*p == '\0')
189#endif
190 q = *argptr++;
191 if (q == NULL || minusc != NULL)
192 error("Bad -c option");
193 minusc = q;
194#ifdef NOHACK
195 break;
196#endif
197 } else if (c == 'o') {
198 minus_o(*argptr, val);
199 if (*argptr)
200 argptr++;
201 } else {
202 if (c == 'p' && !val && privileged) {
203 (void) setuid(getuid());
204 (void) setgid(getgid());
205 }
206 setoption(c, val);
207 }
208 }
209 }
210 return;
211
212 /* When processing `set', a single "-" means turn off -x and -v */
213end_options1:
214 if (!cmdline) {
215 xflag = vflag = 0;
216 return;
217 }
218
219 /*
220 * When processing `set', a "--" means the remaining arguments
221 * replace the positional parameters in the active shell. If
222 * there are no remaining options, then all the positional
223 * parameters are cleared (equivalent to doing ``shift $#'').
224 */
225end_options2:
226 if (!cmdline) {
227 if (*argptr == NULL)
228 setparam(argptr);
229 return;
230 }
231
232 /*
233 * At this point we are processing options given to 'sh' on a command
234 * line. If an end-of-options marker ("-" or "--") is followed by an
235 * arg of "#", then skip over all remaining arguments. Some scripting
236 * languages (e.g.: perl) document that /bin/sh will implement this
237 * behavior, and they recommend that users take advantage of it to
238 * solve certain issues that can come up when writing a perl script.
239 * Yes, this feature is in /bin/sh to help users write perl scripts.
240 */
241 p = *argptr;
242 if (p != NULL && p[0] == '#' && p[1] == '\0') {
243 while (*argptr != NULL)
244 argptr++;
245 /* We need to keep the final argument */
246 argptr--;
247 }
248}
249
|
250STATIC void
| 250static void
|
251minus_o(char *name, int val)
252{
253 int i;
254
255 if (name == NULL) {
256 if (val) {
257 /* "Pretty" output. */
258 out1str("Current option settings\n");
259 for (i = 0; i < NOPTS; i++)
260 out1fmt("%-16s%s\n", optlist[i].name,
261 optlist[i].val ? "on" : "off");
262 } else {
263 /* Output suitable for re-input to shell. */
264 for (i = 0; i < NOPTS; i++) {
265 if (i % 6 == 0)
266 out1str(i == 0 ? "set" : "\nset");
267 out1fmt(" %co %s", optlist[i].val ? '-' : '+',
268 optlist[i].name);
269 }
270 out1c('\n');
271 }
272 } else {
273 for (i = 0; i < NOPTS; i++)
274 if (equal(name, optlist[i].name)) {
275 if (!val && privileged && equal(name, "privileged")) {
276 (void) setuid(getuid());
277 (void) setgid(getgid());
278 }
279 setoption(optlist[i].letter, val);
280 return;
281 }
282 error("Illegal option -o %s", name);
283 }
284}
285
286
| 251minus_o(char *name, int val)
252{
253 int i;
254
255 if (name == NULL) {
256 if (val) {
257 /* "Pretty" output. */
258 out1str("Current option settings\n");
259 for (i = 0; i < NOPTS; i++)
260 out1fmt("%-16s%s\n", optlist[i].name,
261 optlist[i].val ? "on" : "off");
262 } else {
263 /* Output suitable for re-input to shell. */
264 for (i = 0; i < NOPTS; i++) {
265 if (i % 6 == 0)
266 out1str(i == 0 ? "set" : "\nset");
267 out1fmt(" %co %s", optlist[i].val ? '-' : '+',
268 optlist[i].name);
269 }
270 out1c('\n');
271 }
272 } else {
273 for (i = 0; i < NOPTS; i++)
274 if (equal(name, optlist[i].name)) {
275 if (!val && privileged && equal(name, "privileged")) {
276 (void) setuid(getuid());
277 (void) setgid(getgid());
278 }
279 setoption(optlist[i].letter, val);
280 return;
281 }
282 error("Illegal option -o %s", name);
283 }
284}
285
286
|
287STATIC void
| 287static void
|
288setoption(int flag, int val)
289{
290 int i;
291
292 for (i = 0; i < NOPTS; i++)
293 if (optlist[i].letter == flag) {
294 optlist[i].val = val;
295 if (val) {
296 /* #%$ hack for ksh semantics */
297 if (flag == 'V')
298 Eflag = 0;
299 else if (flag == 'E')
300 Vflag = 0;
301 }
302 return;
303 }
304 error("Illegal option -%c", flag);
305}
306
307
308
309#ifdef mkinit
310INCLUDE "options.h"
311
312SHELLPROC {
313 int i;
314
315 for (i = 0; i < NOPTS; i++)
316 optlist[i].val = 0;
317 optschanged();
318
319}
320#endif
321
322
323/*
324 * Set the shell parameters.
325 */
326
327void
328setparam(char **argv)
329{
330 char **newparam;
331 char **ap;
332 int nparam;
333
334 for (nparam = 0 ; argv[nparam] ; nparam++);
335 ap = newparam = ckmalloc((nparam + 1) * sizeof *ap);
336 while (*argv) {
337 *ap++ = savestr(*argv++);
338 }
339 *ap = NULL;
340 freeparam(&shellparam);
341 shellparam.malloc = 1;
342 shellparam.nparam = nparam;
343 shellparam.p = newparam;
344 shellparam.reset = 1;
345 shellparam.optnext = NULL;
346}
347
348
349/*
350 * Free the list of positional parameters.
351 */
352
353void
354freeparam(struct shparam *param)
355{
356 char **ap;
357
358 if (param->malloc) {
359 for (ap = param->p ; *ap ; ap++)
360 ckfree(*ap);
361 ckfree(param->p);
362 }
363}
364
365
366
367/*
368 * The shift builtin command.
369 */
370
371int
372shiftcmd(int argc, char **argv)
373{
374 int n;
375 char **ap1, **ap2;
376
377 n = 1;
378 if (argc > 1)
379 n = number(argv[1]);
380 if (n > shellparam.nparam)
381 return 1;
382 INTOFF;
383 shellparam.nparam -= n;
384 for (ap1 = shellparam.p ; --n >= 0 ; ap1++) {
385 if (shellparam.malloc)
386 ckfree(*ap1);
387 }
388 ap2 = shellparam.p;
389 while ((*ap2++ = *ap1++) != NULL);
390 shellparam.reset = 1;
391 INTON;
392 return 0;
393}
394
395
396
397/*
398 * The set command builtin.
399 */
400
401int
402setcmd(int argc, char **argv)
403{
404 if (argc == 1)
405 return showvarscmd(argc, argv);
406 INTOFF;
407 options(0);
408 optschanged();
409 if (*argptr != NULL) {
410 setparam(argptr);
411 }
412 INTON;
413 return 0;
414}
415
416
417void
418getoptsreset(const char *value)
419{
420 if (number(value) == 1) {
421 shellparam.reset = 1;
422 }
423}
424
425/*
426 * The getopts builtin. Shellparam.optnext points to the next argument
427 * to be processed. Shellparam.optptr points to the next character to
428 * be processed in the current argument. If shellparam.optnext is NULL,
429 * then it's the first time getopts has been called.
430 */
431
432int
433getoptscmd(int argc, char **argv)
434{
435 char **optbase = NULL;
436
437 if (argc < 3)
438 error("usage: getopts optstring var [arg]");
439 else if (argc == 3)
440 optbase = shellparam.p;
441 else
442 optbase = &argv[3];
443
444 if (shellparam.reset == 1) {
445 shellparam.optnext = optbase;
446 shellparam.optptr = NULL;
447 shellparam.reset = 0;
448 }
449
450 return getopts(argv[1], argv[2], optbase, &shellparam.optnext,
451 &shellparam.optptr);
452}
453
| 288setoption(int flag, int val)
289{
290 int i;
291
292 for (i = 0; i < NOPTS; i++)
293 if (optlist[i].letter == flag) {
294 optlist[i].val = val;
295 if (val) {
296 /* #%$ hack for ksh semantics */
297 if (flag == 'V')
298 Eflag = 0;
299 else if (flag == 'E')
300 Vflag = 0;
301 }
302 return;
303 }
304 error("Illegal option -%c", flag);
305}
306
307
308
309#ifdef mkinit
310INCLUDE "options.h"
311
312SHELLPROC {
313 int i;
314
315 for (i = 0; i < NOPTS; i++)
316 optlist[i].val = 0;
317 optschanged();
318
319}
320#endif
321
322
323/*
324 * Set the shell parameters.
325 */
326
327void
328setparam(char **argv)
329{
330 char **newparam;
331 char **ap;
332 int nparam;
333
334 for (nparam = 0 ; argv[nparam] ; nparam++);
335 ap = newparam = ckmalloc((nparam + 1) * sizeof *ap);
336 while (*argv) {
337 *ap++ = savestr(*argv++);
338 }
339 *ap = NULL;
340 freeparam(&shellparam);
341 shellparam.malloc = 1;
342 shellparam.nparam = nparam;
343 shellparam.p = newparam;
344 shellparam.reset = 1;
345 shellparam.optnext = NULL;
346}
347
348
349/*
350 * Free the list of positional parameters.
351 */
352
353void
354freeparam(struct shparam *param)
355{
356 char **ap;
357
358 if (param->malloc) {
359 for (ap = param->p ; *ap ; ap++)
360 ckfree(*ap);
361 ckfree(param->p);
362 }
363}
364
365
366
367/*
368 * The shift builtin command.
369 */
370
371int
372shiftcmd(int argc, char **argv)
373{
374 int n;
375 char **ap1, **ap2;
376
377 n = 1;
378 if (argc > 1)
379 n = number(argv[1]);
380 if (n > shellparam.nparam)
381 return 1;
382 INTOFF;
383 shellparam.nparam -= n;
384 for (ap1 = shellparam.p ; --n >= 0 ; ap1++) {
385 if (shellparam.malloc)
386 ckfree(*ap1);
387 }
388 ap2 = shellparam.p;
389 while ((*ap2++ = *ap1++) != NULL);
390 shellparam.reset = 1;
391 INTON;
392 return 0;
393}
394
395
396
397/*
398 * The set command builtin.
399 */
400
401int
402setcmd(int argc, char **argv)
403{
404 if (argc == 1)
405 return showvarscmd(argc, argv);
406 INTOFF;
407 options(0);
408 optschanged();
409 if (*argptr != NULL) {
410 setparam(argptr);
411 }
412 INTON;
413 return 0;
414}
415
416
417void
418getoptsreset(const char *value)
419{
420 if (number(value) == 1) {
421 shellparam.reset = 1;
422 }
423}
424
425/*
426 * The getopts builtin. Shellparam.optnext points to the next argument
427 * to be processed. Shellparam.optptr points to the next character to
428 * be processed in the current argument. If shellparam.optnext is NULL,
429 * then it's the first time getopts has been called.
430 */
431
432int
433getoptscmd(int argc, char **argv)
434{
435 char **optbase = NULL;
436
437 if (argc < 3)
438 error("usage: getopts optstring var [arg]");
439 else if (argc == 3)
440 optbase = shellparam.p;
441 else
442 optbase = &argv[3];
443
444 if (shellparam.reset == 1) {
445 shellparam.optnext = optbase;
446 shellparam.optptr = NULL;
447 shellparam.reset = 0;
448 }
449
450 return getopts(argv[1], argv[2], optbase, &shellparam.optnext,
451 &shellparam.optptr);
452}
453
|
454STATIC int
| 454static int
|
455getopts(char *optstr, char *optvar, char **optfirst, char ***optnext,
456 char **optptr)
457{
458 char *p, *q;
459 char c = '?';
460 int done = 0;
461 int ind = 0;
462 int err = 0;
463 char s[10];
464
465 if ((p = *optptr) == NULL || *p == '\0') {
466 /* Current word is done, advance */
467 if (*optnext == NULL)
468 return 1;
469 p = **optnext;
470 if (p == NULL || *p != '-' || *++p == '\0') {
471atend:
472 ind = *optnext - optfirst + 1;
473 *optnext = NULL;
474 p = NULL;
475 done = 1;
476 goto out;
477 }
478 (*optnext)++;
479 if (p[0] == '-' && p[1] == '\0') /* check for "--" */
480 goto atend;
481 }
482
483 c = *p++;
484 for (q = optstr; *q != c; ) {
485 if (*q == '\0') {
486 if (optstr[0] == ':') {
487 s[0] = c;
488 s[1] = '\0';
489 err |= setvarsafe("OPTARG", s, 0);
490 }
491 else {
492 out1fmt("Illegal option -%c\n", c);
493 (void) unsetvar("OPTARG");
494 }
495 c = '?';
496 goto bad;
497 }
498 if (*++q == ':')
499 q++;
500 }
501
502 if (*++q == ':') {
503 if (*p == '\0' && (p = **optnext) == NULL) {
504 if (optstr[0] == ':') {
505 s[0] = c;
506 s[1] = '\0';
507 err |= setvarsafe("OPTARG", s, 0);
508 c = ':';
509 }
510 else {
511 out1fmt("No arg for -%c option\n", c);
512 (void) unsetvar("OPTARG");
513 c = '?';
514 }
515 goto bad;
516 }
517
518 if (p == **optnext)
519 (*optnext)++;
520 setvarsafe("OPTARG", p, 0);
521 p = NULL;
522 }
523 else
524 setvarsafe("OPTARG", "", 0);
525 ind = *optnext - optfirst + 1;
526 goto out;
527
528bad:
529 ind = 1;
530 *optnext = NULL;
531 p = NULL;
532out:
533 *optptr = p;
534 fmtstr(s, sizeof(s), "%d", ind);
535 err |= setvarsafe("OPTIND", s, VNOFUNC);
536 s[0] = c;
537 s[1] = '\0';
538 err |= setvarsafe(optvar, s, 0);
539 if (err) {
540 *optnext = NULL;
541 *optptr = NULL;
542 flushall();
543 exraise(EXERROR);
544 }
545 return done;
546}
547
548/*
549 * XXX - should get rid of. have all builtins use getopt(3). the
550 * library getopt must have the BSD extension static variable "optreset"
551 * otherwise it can't be used within the shell safely.
552 *
553 * Standard option processing (a la getopt) for builtin routines. The
554 * only argument that is passed to nextopt is the option string; the
555 * other arguments are unnecessary. It return the character, or '\0' on
556 * end of input.
557 */
558
559int
560nextopt(const char *optstring)
561{
562 char *p;
563 const char *q;
564 char c;
565
566 if ((p = nextopt_optptr) == NULL || *p == '\0') {
567 p = *argptr;
568 if (p == NULL || *p != '-' || *++p == '\0')
569 return '\0';
570 argptr++;
571 if (p[0] == '-' && p[1] == '\0') /* check for "--" */
572 return '\0';
573 }
574 c = *p++;
575 for (q = optstring ; *q != c ; ) {
576 if (*q == '\0')
577 error("Illegal option -%c", c);
578 if (*++q == ':')
579 q++;
580 }
581 if (*++q == ':') {
582 if (*p == '\0' && (p = *argptr++) == NULL)
583 error("No arg for -%c option", c);
584 shoptarg = p;
585 p = NULL;
586 }
587 nextopt_optptr = p;
588 return c;
589}
| 455getopts(char *optstr, char *optvar, char **optfirst, char ***optnext,
456 char **optptr)
457{
458 char *p, *q;
459 char c = '?';
460 int done = 0;
461 int ind = 0;
462 int err = 0;
463 char s[10];
464
465 if ((p = *optptr) == NULL || *p == '\0') {
466 /* Current word is done, advance */
467 if (*optnext == NULL)
468 return 1;
469 p = **optnext;
470 if (p == NULL || *p != '-' || *++p == '\0') {
471atend:
472 ind = *optnext - optfirst + 1;
473 *optnext = NULL;
474 p = NULL;
475 done = 1;
476 goto out;
477 }
478 (*optnext)++;
479 if (p[0] == '-' && p[1] == '\0') /* check for "--" */
480 goto atend;
481 }
482
483 c = *p++;
484 for (q = optstr; *q != c; ) {
485 if (*q == '\0') {
486 if (optstr[0] == ':') {
487 s[0] = c;
488 s[1] = '\0';
489 err |= setvarsafe("OPTARG", s, 0);
490 }
491 else {
492 out1fmt("Illegal option -%c\n", c);
493 (void) unsetvar("OPTARG");
494 }
495 c = '?';
496 goto bad;
497 }
498 if (*++q == ':')
499 q++;
500 }
501
502 if (*++q == ':') {
503 if (*p == '\0' && (p = **optnext) == NULL) {
504 if (optstr[0] == ':') {
505 s[0] = c;
506 s[1] = '\0';
507 err |= setvarsafe("OPTARG", s, 0);
508 c = ':';
509 }
510 else {
511 out1fmt("No arg for -%c option\n", c);
512 (void) unsetvar("OPTARG");
513 c = '?';
514 }
515 goto bad;
516 }
517
518 if (p == **optnext)
519 (*optnext)++;
520 setvarsafe("OPTARG", p, 0);
521 p = NULL;
522 }
523 else
524 setvarsafe("OPTARG", "", 0);
525 ind = *optnext - optfirst + 1;
526 goto out;
527
528bad:
529 ind = 1;
530 *optnext = NULL;
531 p = NULL;
532out:
533 *optptr = p;
534 fmtstr(s, sizeof(s), "%d", ind);
535 err |= setvarsafe("OPTIND", s, VNOFUNC);
536 s[0] = c;
537 s[1] = '\0';
538 err |= setvarsafe(optvar, s, 0);
539 if (err) {
540 *optnext = NULL;
541 *optptr = NULL;
542 flushall();
543 exraise(EXERROR);
544 }
545 return done;
546}
547
548/*
549 * XXX - should get rid of. have all builtins use getopt(3). the
550 * library getopt must have the BSD extension static variable "optreset"
551 * otherwise it can't be used within the shell safely.
552 *
553 * Standard option processing (a la getopt) for builtin routines. The
554 * only argument that is passed to nextopt is the option string; the
555 * other arguments are unnecessary. It return the character, or '\0' on
556 * end of input.
557 */
558
559int
560nextopt(const char *optstring)
561{
562 char *p;
563 const char *q;
564 char c;
565
566 if ((p = nextopt_optptr) == NULL || *p == '\0') {
567 p = *argptr;
568 if (p == NULL || *p != '-' || *++p == '\0')
569 return '\0';
570 argptr++;
571 if (p[0] == '-' && p[1] == '\0') /* check for "--" */
572 return '\0';
573 }
574 c = *p++;
575 for (q = optstring ; *q != c ; ) {
576 if (*q == '\0')
577 error("Illegal option -%c", c);
578 if (*++q == ':')
579 q++;
580 }
581 if (*++q == ':') {
582 if (*p == '\0' && (p = *argptr++) == NULL)
583 error("No arg for -%c option", c);
584 shoptarg = p;
585 p = NULL;
586 }
587 nextopt_optptr = p;
588 return c;
589}
|