1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1985 Sun Microsystems, Inc.
5 * Copyright (c) 1980, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed by the University of
20 *	California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38#if 0
39#ifndef lint
40static char sccsid[] = "@(#)args.c	8.1 (Berkeley) 6/6/93";
41#endif /* not lint */
42#endif
43
44#include <sys/cdefs.h>
45__FBSDID("$FreeBSD$");
46
47/*
48 * Argument scanning and profile reading code.  Default parameters are set
49 * here as well.
50 */
51
52#include <ctype.h>
53#include <err.h>
54#include <limits.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include "indent_globs.h"
59#include "indent.h"
60
61#define INDENT_VERSION	"2.0"
62
63/* profile types */
64#define	PRO_SPECIAL	1	/* special case */
65#define	PRO_BOOL	2	/* boolean */
66#define	PRO_INT		3	/* integer */
67
68/* profile specials for booleans */
69#define	ON		1	/* turn it on */
70#define	OFF		0	/* turn it off */
71
72/* profile specials for specials */
73#define	IGN		1	/* ignore it */
74#define	CLI		2	/* case label indent (float) */
75#define	STDIN		3	/* use stdin */
76#define	KEY		4	/* type (keyword) */
77
78static void scan_profile(FILE *);
79
80#define	KEY_FILE		5	/* only used for args */
81#define VERSION			6	/* only used for args */
82
83const char *option_source = "?";
84
85void add_typedefs_from_file(const char *str);
86
87/*
88 * N.B.: because of the way the table here is scanned, options whose names are
89 * substrings of other options must occur later; that is, with -lp vs -l, -lp
90 * must be first.  Also, while (most) booleans occur more than once, the last
91 * default value is the one actually assigned.
92 */
93struct pro {
94    const char *p_name;		/* name, e.g. -bl, -cli */
95    int         p_type;		/* type (int, bool, special) */
96    int         p_default;	/* the default value (if int) */
97    int         p_special;	/* depends on type */
98    int        *p_obj;		/* the associated variable */
99}           pro[] = {
100
101    {"T", PRO_SPECIAL, 0, KEY, 0},
102    {"U", PRO_SPECIAL, 0, KEY_FILE, 0},
103    {"-version", PRO_SPECIAL, 0, VERSION, 0},
104    {"P", PRO_SPECIAL, 0, IGN, 0},
105    {"bacc", PRO_BOOL, false, ON, &opt.blanklines_around_conditional_compilation},
106    {"badp", PRO_BOOL, false, ON, &opt.blanklines_after_declarations_at_proctop},
107    {"bad", PRO_BOOL, false, ON, &opt.blanklines_after_declarations},
108    {"bap", PRO_BOOL, false, ON, &opt.blanklines_after_procs},
109    {"bbb", PRO_BOOL, false, ON, &opt.blanklines_before_blockcomments},
110    {"bc", PRO_BOOL, true, OFF, &opt.leave_comma},
111    {"bl", PRO_BOOL, true, OFF, &opt.btype_2},
112    {"br", PRO_BOOL, true, ON, &opt.btype_2},
113    {"bs", PRO_BOOL, false, ON, &opt.Bill_Shannon},
114    {"cdb", PRO_BOOL, true, ON, &opt.comment_delimiter_on_blankline},
115    {"cd", PRO_INT, 0, 0, &opt.decl_com_ind},
116    {"ce", PRO_BOOL, true, ON, &opt.cuddle_else},
117    {"ci", PRO_INT, 0, 0, &opt.continuation_indent},
118    {"cli", PRO_SPECIAL, 0, CLI, 0},
119    {"cs", PRO_BOOL, false, ON, &opt.space_after_cast},
120    {"c", PRO_INT, 33, 0, &opt.com_ind},
121    {"di", PRO_INT, 16, 0, &opt.decl_indent},
122    {"dj", PRO_BOOL, false, ON, &opt.ljust_decl},
123    {"d", PRO_INT, 0, 0, &opt.unindent_displace},
124    {"eei", PRO_BOOL, false, ON, &opt.extra_expression_indent},
125    {"ei", PRO_BOOL, true, ON, &opt.else_if},
126    {"fbs", PRO_BOOL, true, ON, &opt.function_brace_split},
127    {"fc1", PRO_BOOL, true, ON, &opt.format_col1_comments},
128    {"fcb", PRO_BOOL, true, ON, &opt.format_block_comments},
129    {"ip", PRO_BOOL, true, ON, &opt.indent_parameters},
130    {"i", PRO_INT, 8, 0, &opt.ind_size},
131    {"lc", PRO_INT, 0, 0, &opt.block_comment_max_col},
132    {"ldi", PRO_INT, -1, 0, &opt.local_decl_indent},
133    {"lpl", PRO_BOOL, false, ON, &opt.lineup_to_parens_always},
134    {"lp", PRO_BOOL, true, ON, &opt.lineup_to_parens},
135    {"l", PRO_INT, 78, 0, &opt.max_col},
136    {"nbacc", PRO_BOOL, false, OFF, &opt.blanklines_around_conditional_compilation},
137    {"nbadp", PRO_BOOL, false, OFF, &opt.blanklines_after_declarations_at_proctop},
138    {"nbad", PRO_BOOL, false, OFF, &opt.blanklines_after_declarations},
139    {"nbap", PRO_BOOL, false, OFF, &opt.blanklines_after_procs},
140    {"nbbb", PRO_BOOL, false, OFF, &opt.blanklines_before_blockcomments},
141    {"nbc", PRO_BOOL, true, ON, &opt.leave_comma},
142    {"nbs", PRO_BOOL, false, OFF, &opt.Bill_Shannon},
143    {"ncdb", PRO_BOOL, true, OFF, &opt.comment_delimiter_on_blankline},
144    {"nce", PRO_BOOL, true, OFF, &opt.cuddle_else},
145    {"ncs", PRO_BOOL, false, OFF, &opt.space_after_cast},
146    {"ndj", PRO_BOOL, false, OFF, &opt.ljust_decl},
147    {"neei", PRO_BOOL, false, OFF, &opt.extra_expression_indent},
148    {"nei", PRO_BOOL, true, OFF, &opt.else_if},
149    {"nfbs", PRO_BOOL, true, OFF, &opt.function_brace_split},
150    {"nfc1", PRO_BOOL, true, OFF, &opt.format_col1_comments},
151    {"nfcb", PRO_BOOL, true, OFF, &opt.format_block_comments},
152    {"nip", PRO_BOOL, true, OFF, &opt.indent_parameters},
153    {"nlpl", PRO_BOOL, false, OFF, &opt.lineup_to_parens_always},
154    {"nlp", PRO_BOOL, true, OFF, &opt.lineup_to_parens},
155    {"npcs", PRO_BOOL, false, OFF, &opt.proc_calls_space},
156    {"npro", PRO_SPECIAL, 0, IGN, 0},
157    {"npsl", PRO_BOOL, true, OFF, &opt.procnames_start_line},
158    {"nsc", PRO_BOOL, true, OFF, &opt.star_comment_cont},
159    {"nsob", PRO_BOOL, false, OFF, &opt.swallow_optional_blanklines},
160    {"nut", PRO_BOOL, true, OFF, &opt.use_tabs},
161    {"nv", PRO_BOOL, false, OFF, &opt.verbose},
162    {"pcs", PRO_BOOL, false, ON, &opt.proc_calls_space},
163    {"psl", PRO_BOOL, true, ON, &opt.procnames_start_line},
164    {"sc", PRO_BOOL, true, ON, &opt.star_comment_cont},
165    {"sob", PRO_BOOL, false, ON, &opt.swallow_optional_blanklines},
166    {"st", PRO_SPECIAL, 0, STDIN, 0},
167    {"ta", PRO_BOOL, false, ON, &opt.auto_typedefs},
168    {"ts", PRO_INT, 8, 0, &opt.tabsize},
169    {"ut", PRO_BOOL, true, ON, &opt.use_tabs},
170    {"v", PRO_BOOL, false, ON, &opt.verbose},
171    /* whew! */
172    {0, 0, 0, 0, 0}
173};
174
175/*
176 * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments
177 * given in these files.
178 */
179void
180set_profile(const char *profile_name)
181{
182    FILE *f;
183    char fname[PATH_MAX];
184    static char prof[] = ".indent.pro";
185
186    if (profile_name == NULL)
187	snprintf(fname, sizeof(fname), "%s/%s", getenv("HOME"), prof);
188    else
189	snprintf(fname, sizeof(fname), "%s", profile_name + 2);
190    if ((f = fopen(option_source = fname, "r")) != NULL) {
191	scan_profile(f);
192	(void) fclose(f);
193    }
194    if ((f = fopen(option_source = prof, "r")) != NULL) {
195	scan_profile(f);
196	(void) fclose(f);
197    }
198    option_source = "Command line";
199}
200
201static void
202scan_profile(FILE *f)
203{
204    int		comment, i;
205    char	*p;
206    char        buf[BUFSIZ];
207
208    while (1) {
209	p = buf;
210	comment = 0;
211	while ((i = getc(f)) != EOF) {
212	    if (i == '*' && !comment && p > buf && p[-1] == '/') {
213		comment = p - buf;
214		*p++ = i;
215	    } else if (i == '/' && comment && p > buf && p[-1] == '*') {
216		p = buf + comment - 1;
217		comment = 0;
218	    } else if (isspace((unsigned char)i)) {
219		if (p > buf && !comment)
220		    break;
221	    } else {
222		*p++ = i;
223	    }
224	}
225	if (p != buf) {
226	    *p++ = 0;
227	    if (opt.verbose)
228		printf("profile: %s\n", buf);
229	    set_option(buf);
230	}
231	else if (i == EOF)
232	    return;
233    }
234}
235
236static const char *
237eqin(const char *s1, const char *s2)
238{
239    while (*s1) {
240	if (*s1++ != *s2++)
241	    return (NULL);
242    }
243    return (s2);
244}
245
246/*
247 * Set the defaults.
248 */
249void
250set_defaults(void)
251{
252    struct pro *p;
253
254    /*
255     * Because ps.case_indent is a float, we can't initialize it from the
256     * table:
257     */
258    opt.case_indent = 0.0;	/* -cli0.0 */
259    for (p = pro; p->p_name; p++)
260	if (p->p_type != PRO_SPECIAL)
261	    *p->p_obj = p->p_default;
262}
263
264void
265set_option(char *arg)
266{
267    struct	pro *p;
268    const char	*param_start;
269
270    arg++;			/* ignore leading "-" */
271    for (p = pro; p->p_name; p++)
272	if (*p->p_name == *arg && (param_start = eqin(p->p_name, arg)) != NULL)
273	    goto found;
274    errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1);
275found:
276    switch (p->p_type) {
277
278    case PRO_SPECIAL:
279	switch (p->p_special) {
280
281	case IGN:
282	    break;
283
284	case CLI:
285	    if (*param_start == 0)
286		goto need_param;
287	    opt.case_indent = atof(param_start);
288	    break;
289
290	case STDIN:
291	    if (input == NULL)
292		input = stdin;
293	    if (output == NULL)
294		output = stdout;
295	    break;
296
297	case KEY:
298	    if (*param_start == 0)
299		goto need_param;
300	    add_typename(param_start);
301	    break;
302
303	case KEY_FILE:
304	    if (*param_start == 0)
305		goto need_param;
306	    add_typedefs_from_file(param_start);
307	    break;
308
309	case VERSION:
310	    printf("FreeBSD indent %s\n", INDENT_VERSION);
311	    exit(0);
312
313	default:
314	    errx(1, "set_option: internal error: p_special %d", p->p_special);
315	}
316	break;
317
318    case PRO_BOOL:
319	if (p->p_special == OFF)
320	    *p->p_obj = false;
321	else
322	    *p->p_obj = true;
323	break;
324
325    case PRO_INT:
326	if (!isdigit((unsigned char)*param_start)) {
327    need_param:
328	    errx(1, "%s: ``%s'' requires a parameter", option_source, p->p_name);
329	}
330	*p->p_obj = atoi(param_start);
331	break;
332
333    default:
334	errx(1, "set_option: internal error: p_type %d", p->p_type);
335    }
336}
337
338void
339add_typedefs_from_file(const char *str)
340{
341    FILE *file;
342    char line[BUFSIZ];
343
344    if ((file = fopen(str, "r")) == NULL) {
345	fprintf(stderr, "indent: cannot open file %s\n", str);
346	exit(1);
347    }
348    while ((fgets(line, BUFSIZ, file)) != NULL) {
349	/* Remove trailing whitespace */
350	line[strcspn(line, " \t\n\r")] = '\0';
351	add_typename(line);
352    }
353    fclose(file);
354}
355