2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1985 Sun Microsystems, Inc.
5 * Copyright (c) 1980, 1993
6 * The Regents of the University of California. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)io.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: head/usr.bin/indent/io.c 334927 2018-06-10 16:44:18Z pstef $
42 #include "indent_globs.h"
47 int n_real_blanklines
;
48 int prefix_blankline_requested
, postfix_blankline_requested
;
51 int inhibit_formatting
;
52 int suppress_blanklines
;
55 static int paren_target
;
56 static int pad_output(int current
, int target
);
60 { /* dump_line is the routine that actually
61 * effects the printing of the new source. It
62 * prints the label section, followed by the
63 * code section with the appropriate nesting
64 * level, followed by any comments */
67 static int not_first_line
;
73 if (s_code
== e_code
&& s_lab
== e_lab
&& s_com
== e_com
) {
74 if (suppress_blanklines
> 0)
75 suppress_blanklines
--;
81 else if (!inhibit_formatting
) {
82 suppress_blanklines
= 0;
84 if (prefix_blankline_requested
&& not_first_line
) {
85 if (opt
.swallow_optional_blanklines
) {
86 if (n_real_blanklines
== 1)
87 n_real_blanklines
= 0;
90 if (n_real_blanklines
== 0)
91 n_real_blanklines
= 1;
94 while (--n_real_blanklines
>= 0)
96 n_real_blanklines
= 0;
97 if (ps
.ind_level
== 0)
98 ps
.ind_stmt
= 0; /* this is a class A kludge. dont do
99 * additional statement indentation if we are
100 * at bracket level 0 */
102 if (e_lab
!= s_lab
|| e_code
!= s_code
)
103 ++code_lines
; /* keep count of lines with code */
106 if (e_lab
!= s_lab
) { /* print lab, if any */
109 fprintf(output
, ".*/\n");
111 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
114 cur_col
= pad_output(1, compute_label_target());
115 if (s_lab
[0] == '#' && (strncmp(s_lab
, "#else", 5) == 0
116 || strncmp(s_lab
, "#endif", 6) == 0)) {
118 if (e_lab
[-1] == '\n') e_lab
--;
119 do putc(*s
++, output
);
120 while (s
< e_lab
&& 'a' <= *s
&& *s
<='z');
121 while ((*s
== ' ' || *s
== '\t') && s
< e_lab
)
124 fprintf(output
, s
[0]=='/' && s
[1]=='*' ? "\t%.*s" : "\t/* %.*s */",
125 (int)(e_lab
- s
), s
);
127 else fprintf(output
, "%.*s", (int)(e_lab
- s_lab
), s_lab
);
128 cur_col
= count_spaces(cur_col
, s_lab
);
131 cur_col
= 1; /* there is no label section */
135 if (s_code
!= e_code
) { /* print code section, if any */
140 fprintf(output
, ".*/\n");
142 target_col
= compute_code_target();
146 for (i
= 0; i
< ps
.p_l_follow
; i
++)
147 if (ps
.paren_indents
[i
] >= 0)
148 ps
.paren_indents
[i
] = -(ps
.paren_indents
[i
] + target_col
);
150 cur_col
= pad_output(cur_col
, target_col
);
151 for (p
= s_code
; p
< e_code
; p
++)
152 if (*p
== (char) 0200)
153 fprintf(output
, "%d", target_col
* 7);
156 cur_col
= count_spaces(cur_col
, s_code
);
158 if (s_com
!= e_com
) { /* print comment, if any */
159 int target
= ps
.com_col
;
160 char *com_st
= s_com
;
162 target
+= ps
.comment_delta
;
163 while (*com_st
== '\t') /* consider original indentation in
164 * case this is a box comment */
165 com_st
++, target
+= opt
.tabsize
;
169 else if (*com_st
== '\t') {
170 target
= opt
.tabsize
* (1 + (target
- 1) / opt
.tabsize
) + 1;
175 if (cur_col
> target
) { /* if comment can't fit on this line,
176 * put it on next line */
181 while (e_com
> com_st
&& isspace((unsigned char)e_com
[-1]))
183 (void)pad_output(cur_col
, target
);
184 fwrite(com_st
, e_com
- com_st
, 1, output
);
185 ps
.comment_delta
= ps
.n_comment_delta
;
186 ++ps
.com_lines
; /* count lines with comments */
189 putc('\014', output
);
193 if (ps
.just_saw_decl
== 1 && opt
.blanklines_after_declarations
) {
194 prefix_blankline_requested
= 1;
195 ps
.just_saw_decl
= 0;
198 prefix_blankline_requested
= postfix_blankline_requested
;
199 postfix_blankline_requested
= 0;
201 ps
.decl_on_line
= ps
.in_decl
; /* if we are in the middle of a
202 * declaration, remember that fact for
203 * proper comment indentation */
204 ps
.ind_stmt
= ps
.in_stmt
& ~ps
.in_decl
; /* next line should be
205 * indented if we have not
206 * completed this stmt and if
207 * we are not in the middle of
210 ps
.dumped_decl_indent
= 0;
211 *(e_lab
= s_lab
) = '\0'; /* reset buffers */
212 *(e_code
= s_code
) = '\0';
213 *(e_com
= s_com
= combuf
+ 1) = '\0';
214 ps
.ind_level
= ps
.i_l_follow
;
215 ps
.paren_level
= ps
.p_l_follow
;
216 if (ps
.paren_level
> 0)
217 paren_target
= -ps
.paren_indents
[ps
.paren_level
- 1];
222 compute_code_target(void)
224 int target_col
= opt
.ind_size
* ps
.ind_level
+ 1;
227 if (!opt
.lineup_to_parens
)
228 target_col
+= opt
.continuation_indent
*
229 (2 * opt
.continuation_indent
== opt
.ind_size
? 1 : ps
.paren_level
);
230 else if (opt
.lineup_to_parens_always
)
231 target_col
= paren_target
;
234 int t
= paren_target
;
236 if ((w
= count_spaces(t
, s_code
) - opt
.max_col
) > 0
237 && count_spaces(target_col
, s_code
) <= opt
.max_col
) {
245 else if (ps
.ind_stmt
)
246 target_col
+= opt
.continuation_indent
;
251 compute_label_target(void)
254 ps
.pcase
? (int) (case_ind
* opt
.ind_size
) + 1
256 : opt
.ind_size
* (ps
.ind_level
- label_offset
) + 1;
261 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
263 * All rights reserved
268 * FUNCTION: Reads one block of input into input_buffer
270 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A
271 * Willcox of CAC Added check for switch back to partly full input
272 * buffer from temporary buffer
277 { /* this routine reads stuff from the input */
282 if (bp_save
!= NULL
) { /* there is a partly filled input buffer left */
283 buf_ptr
= bp_save
; /* do not read anything, just switch buffers */
285 bp_save
= be_save
= NULL
;
286 if (buf_ptr
< buf_end
)
287 return; /* only return if there is really something in
290 for (p
= in_buffer
;;) {
291 if (p
>= in_buffer_limit
) {
292 int size
= (in_buffer_limit
- in_buffer
) * 2 + 10;
293 int offset
= p
- in_buffer
;
294 in_buffer
= realloc(in_buffer
, size
);
295 if (in_buffer
== NULL
)
296 errx(1, "input line too long");
297 p
= in_buffer
+ offset
;
298 in_buffer_limit
= in_buffer
+ size
- 2;
300 if ((i
= getc(f
)) == EOF
) {
313 if (p
- in_buffer
> 2 && p
[-2] == '/' && p
[-3] == '*') {
314 if (in_buffer
[3] == 'I' && strncmp(in_buffer
, "/**INDENT**", 11) == 0)
315 fill_buffer(); /* flush indent error message */
320 while (*p
== ' ' || *p
== '\t')
322 if (*p
== '/' && p
[1] == '*') {
324 while (*p
== ' ' || *p
== '\t')
326 if (p
[0] == 'I' && p
[1] == 'N' && p
[2] == 'D' && p
[3] == 'E'
327 && p
[4] == 'N' && p
[5] == 'T') {
329 while (*p
== ' ' || *p
== '\t')
333 else if (*p
== 'O') {
336 else if (*p
== 'F' && *++p
== 'F')
339 while (*p
== ' ' || *p
== '\t')
341 if (p
[0] == '*' && p
[1] == '/' && p
[2] == '\n' && com
) {
342 if (s_com
!= e_com
|| s_lab
!= e_lab
|| s_code
!= e_code
)
344 if (!(inhibit_formatting
= com
- 1)) {
345 n_real_blanklines
= 0;
346 postfix_blankline_requested
= 0;
347 prefix_blankline_requested
= 0;
348 suppress_blanklines
= 1;
355 if (inhibit_formatting
) {
359 while (*p
++ != '\n');
364 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
366 * All rights reserved
371 * FUNCTION: Writes tabs and spaces to move the current column up to the desired
374 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
376 * PARAMETERS: current integer The current column target
377 * nteger The desired column
379 * RETURNS: Integer value of the new column. (If current >= target, no action is
380 * taken, and current is returned.
386 * CALLED BY: dump_line
388 * HISTORY: initial coding November 1976 D A Willcox of CAC
392 pad_output(int current
, int target
)
393 /* writes tabs and blanks (if necessary) to
394 * get the current output position up to the
396 /* current: the current column value */
397 /* target: position we want it at */
399 int curr
; /* internal column pointer */
401 if (current
>= target
)
402 return (current
); /* line is already long enough */
407 while ((tcur
= opt
.tabsize
* (1 + (curr
- 1) / opt
.tabsize
) + 1) <= target
) {
412 while (curr
++ < target
)
413 putc(' ', output
); /* pad with final blanks */
419 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
421 * All rights reserved
426 * FUNCTION: Find out where printing of a given string will leave the current
427 * character position on output.
429 * ALGORITHM: Run thru input string and add appropriate values to current
432 * RETURNS: Integer value of position after printing "buffer" starting in column
435 * HISTORY: initial coding November 1976 D A Willcox of CAC
439 count_spaces_until(int cur
, char *buffer
, char *end
)
441 * this routine figures out where the character position will be after
442 * printing the text in buffer starting at column "current"
445 char *buf
; /* used to look thru buffer */
447 for (buf
= buffer
; *buf
!= '\0' && buf
!= end
; ++buf
) {
451 case 014: /* form feed */
456 cur
= opt
.tabsize
* (1 + (cur
- 1) / opt
.tabsize
) + 1;
459 case 010: /* backspace */
466 } /* end of switch */
467 } /* end of for loop */
472 count_spaces(int cur
, char *buffer
)
474 return (count_spaces_until(cur
, buffer
, NULL
));
478 diag4(int level
, const char *msg
, int a
, int b
)
482 if (output
== stdout
) {
483 fprintf(stdout
, "/**INDENT** %s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
484 fprintf(stdout
, msg
, a
, b
);
485 fprintf(stdout
, " */\n");
488 fprintf(stderr
, "%s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
489 fprintf(stderr
, msg
, a
, b
);
490 fprintf(stderr
, "\n");
495 diag3(int level
, const char *msg
, int a
)
499 if (output
== stdout
) {
500 fprintf(stdout
, "/**INDENT** %s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
501 fprintf(stdout
, msg
, a
);
502 fprintf(stdout
, " */\n");
505 fprintf(stderr
, "%s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
506 fprintf(stderr
, msg
, a
);
507 fprintf(stderr
, "\n");
512 diag2(int level
, const char *msg
)
516 if (output
== stdout
) {
517 fprintf(stdout
, "/**INDENT** %s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
518 fprintf(stdout
, "%s", msg
);
519 fprintf(stdout
, " */\n");
522 fprintf(stderr
, "%s@%d: ", level
== 0 ? "Warning" : "Error", line_no
);
523 fprintf(stderr
, "%s", msg
);
524 fprintf(stderr
, "\n");