2 * Copyright (c) 1985 Sun Microsystems, Inc.
3 * Copyright (c) 1976 Board of Trustees of the University of Illinois.
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#) Copyright (c) 1985 Sun Microsystems, Inc.
36 * @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.
37 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
38 * @(#)indent.c 5.17 (Berkeley) 6/7/93
39 * $FreeBSD: src/usr.bin/indent/indent.c,v 1.25 2006/09/13 05:06:12 charnier Exp $
40 * $DragonFly: src/usr.bin/indent/indent.c,v 1.4 2007/05/13 18:33:58 swildner Exp $
43 #include <sys/param.h>
51 #include "indent_globs.h"
52 #include "indent_codes.h"
55 static void bakcopy(void);
57 const char *in_name
= "Standard Input"; /* will always point to name of input
59 const char *out_name
= "Standard Output"; /* will always point to name
61 char bakfile
[MAXPATHLEN
] = "";
64 main(int argc
, char **argv
)
67 int dec_ind
; /* current indentation for declarations */
68 int di_stack
[20]; /* a stack of structure indentation levels */
69 int flushed_nl
; /* used when buffering up comments to remember
70 * that a newline was passed over */
71 int force_nl
; /* when true, code must be broken */
72 int hd_type
= 0; /* used to store type of stmt for if (...),
74 int i
; /* local loop counter */
75 int scase
; /* set to true when we see a case, so we will
76 * know what to do with the following colon */
77 int sp_sw
; /* when true, we are in the expression of
78 * if(...), while(...), etc. */
79 int squest
; /* when this is positive, we have seen a ?
80 * without the matching : in a <c>?<s>:<s>
82 const char *t_ptr
; /* used for copying tokens */
83 int tabs_to_var
; /* true if using tabs to indent to var name */
84 int type_code
; /* the type of token, returned by lexi */
86 int last_else
= 0; /* true iff last keyword was an else */
89 /*-----------------------------------------------*\
91 \*-----------------------------------------------*/
95 ps
.p_stack
[0] = stmt
; /* this is the parser's stack */
96 ps
.last_nl
= true; /* this is true if the last thing scanned was
98 ps
.last_token
= semicolon
;
99 combuf
= (char *) malloc(bufsize
);
102 labbuf
= (char *) malloc(bufsize
);
105 codebuf
= (char *) malloc(bufsize
);
108 tokenbuf
= (char *) malloc(bufsize
);
109 if (tokenbuf
== NULL
)
111 l_com
= combuf
+ bufsize
- 5;
112 l_lab
= labbuf
+ bufsize
- 5;
113 l_code
= codebuf
+ bufsize
- 5;
114 l_token
= tokenbuf
+ bufsize
- 5;
115 combuf
[0] = codebuf
[0] = labbuf
[0] = ' '; /* set up code, label, and
117 combuf
[1] = codebuf
[1] = labbuf
[1] = '\0';
118 ps
.else_if
= 1; /* Default else-if special processing to on */
119 s_lab
= e_lab
= labbuf
+ 1;
120 s_code
= e_code
= codebuf
+ 1;
121 s_com
= e_com
= combuf
+ 1;
122 s_token
= e_token
= tokenbuf
+ 1;
124 in_buffer
= (char *) malloc(10);
125 if (in_buffer
== NULL
)
127 in_buffer_limit
= in_buffer
+ 8;
128 buf_ptr
= buf_end
= in_buffer
;
130 had_eof
= ps
.in_decl
= ps
.decl_on_line
= break_comma
= false;
131 sp_sw
= force_nl
= false;
135 di_stack
[ps
.dec_nest
= 0] = 0;
136 ps
.want_blank
= ps
.in_stmt
= ps
.ind_stmt
= false;
138 scase
= ps
.pcase
= false;
147 /*--------------------------------------------------*\
148 | COMMAND LINE SCAN |
149 \*--------------------------------------------------*/
152 max_col
= 78; /* -l78 */
153 lineup_to_parens
= 1; /* -lp */
154 ps
.ljust_decl
= 0; /* -ndj */
155 ps
.com_ind
= 33; /* -c33 */
156 star_comment_cont
= 1; /* -sc */
157 ps
.ind_size
= 8; /* -i8 */
159 ps
.decl_indent
= 16; /* -di16 */
160 ps
.local_decl_indent
= -1; /* if this is not set to some nonnegative value
161 * by an arg, we will set this equal to
163 ps
.indent_parameters
= 1; /* -ip */
164 ps
.decl_com_ind
= 0; /* if this is not set to some positive value
165 * by an arg, we will set this equal to
167 btype_2
= 1; /* -br */
168 cuddle_else
= 1; /* -ce */
169 ps
.unindent_displace
= 0; /* -d0 */
170 ps
.case_indent
= 0; /* -cli0 */
171 format_block_comments
= 1; /* -fcb */
172 format_col1_comments
= 1; /* -fc1 */
173 procnames_start_line
= 1; /* -psl */
174 proc_calls_space
= 0; /* -npcs */
175 comment_delimiter_on_blankline
= 1; /* -cdb */
176 ps
.leave_comma
= 1; /* -nbc */
179 for (i
= 1; i
< argc
; ++i
)
180 if (strcmp(argv
[i
], "-npro") == 0)
186 for (i
= 1; i
< argc
; ++i
) {
189 * look thru args (if any) for changes to defaults
191 if (argv
[i
][0] != '-') {/* no flag on parameter */
192 if (input
== 0) { /* we must have the input file */
193 in_name
= argv
[i
]; /* remember name of input file */
194 input
= fopen(in_name
, "r");
195 if (input
== 0) /* check for open error */
196 err(1, "%s", in_name
);
199 else if (output
== 0) { /* we have the output file */
200 out_name
= argv
[i
]; /* remember name of output file */
201 if (strcmp(in_name
, out_name
) == 0) { /* attempt to overwrite
203 errx(1, "input and output files must be different");
205 output
= fopen(out_name
, "w");
206 if (output
== 0) /* check for create error */
207 err(1, "%s", out_name
);
210 errx(1, "unknown parameter: %s", argv
[i
]);
218 if (troff
|| input
== stdin
)
226 ps
.com_ind
= 2; /* dont put normal comments before column 2 */
228 if (bodyf
.font
[0] == 0)
229 parsefont(&bodyf
, "R");
230 if (scomf
.font
[0] == 0)
231 parsefont(&scomf
, "I");
232 if (blkcomf
.font
[0] == 0)
233 blkcomf
= scomf
, blkcomf
.size
+= 2;
234 if (boxcomf
.font
[0] == 0)
236 if (stringf
.font
[0] == 0)
237 parsefont(&stringf
, "L");
238 if (keywordf
.font
[0] == 0)
239 parsefont(&keywordf
, "B");
240 writefdef(&bodyf
, 'B');
241 writefdef(&scomf
, 'C');
242 writefdef(&blkcomf
, 'L');
243 writefdef(&boxcomf
, 'X');
244 writefdef(&stringf
, 'S');
245 writefdef(&keywordf
, 'K');
247 if (block_comment_max_col
<= 0)
248 block_comment_max_col
= max_col
;
249 if (ps
.local_decl_indent
< 0) /* if not specified by user, set this */
250 ps
.local_decl_indent
= ps
.decl_indent
;
251 if (ps
.decl_com_ind
<= 0) /* if not specified by user, set this */
252 ps
.decl_com_ind
= ps
.ljust_decl
? (ps
.com_ind
<= 10 ? 2 : ps
.com_ind
- 8) : ps
.com_ind
;
253 if (continuation_indent
== 0)
254 continuation_indent
= ps
.ind_size
;
255 fill_buffer(); /* get first batch of stuff into input buffer */
266 col
= ((col
- 1) & ~7) + 9;
271 if (col
> ps
.ind_size
)
272 ps
.ind_level
= ps
.i_l_follow
= col
/ ps
.ind_size
;
275 const char *p
= in_name
,
281 fprintf(output
, ".Fn \"%s\"\n", beg
);
287 while (1) { /* this is the main loop. it will go until we
291 type_code
= lexi(); /* lexi reads one token. The actual
292 * characters read are stored in "token". lexi
293 * returns a code indicating the type of token */
294 is_procname
= ps
.procname
[0];
297 * The following code moves everything following an if (), while (),
298 * else, etc. up to the start of the following stmt to a buffer. This
299 * allows proper handling of both kinds of brace placement.
303 while (ps
.search_brace
) { /* if we scanned an if(), while(),
304 * etc., we might need to copy stuff
305 * into a buffer we must loop, copying
306 * stuff into save_com, until we find
307 * the start of the stmt which follows
308 * the if, or whatever */
314 break; /* form feeds and newlines found here will be
317 case lbrace
: /* this is a brace that starts the compound
319 if (sc_end
== 0) { /* ignore buffering if a comment wasnt
321 ps
.search_brace
= false;
325 save_com
[0] = '{'; /* we either want to put the brace
326 * right after the if */
327 goto sw_buffer
; /* go to common code to get out of
330 case comment
: /* we have a comment, so we must copy it into
332 if (!flushed_nl
|| sc_end
!= 0) {
333 if (sc_end
== 0) { /* if this is the first comment, we
334 * must set up the buffer */
335 save_com
[0] = save_com
[1] = ' ';
336 sc_end
= &(save_com
[2]);
339 *sc_end
++ = '\n'; /* add newline between
344 *sc_end
++ = '/'; /* copy in start of comment */
347 for (;;) { /* loop until we get to the end of the comment */
348 *sc_end
= *buf_ptr
++;
349 if (buf_ptr
>= buf_end
)
352 if (*sc_end
++ == '*' && *buf_ptr
== '/')
353 break; /* we are at end of comment */
355 if (sc_end
>= &(save_com
[sc_size
])) { /* check for temp buffer
357 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
362 *sc_end
++ = '/'; /* add ending slash */
363 if (++buf_ptr
>= buf_end
) /* get past / in buffer */
367 default: /* it is the start of a normal statement */
368 if (flushed_nl
) /* if we flushed a newline, make sure it is
371 if ((type_code
== sp_paren
&& *token
== 'i'
372 && last_else
&& ps
.else_if
)
373 || (type_code
== sp_nparen
&& *token
== 'e'
374 && e_code
!= s_code
&& e_code
[-1] == '}'))
377 if (sc_end
== 0) { /* ignore buffering if comment wasnt
379 ps
.search_brace
= false;
382 if (force_nl
) { /* if we should insert a nl here, put it into
385 --line_no
; /* this will be re-increased when the nl is
386 * read from the buffer */
389 if (verbose
&& !flushed_nl
) /* print error msg if the line
390 * was not already broken */
391 diag2(0, "Line broken");
394 for (t_ptr
= token
; *t_ptr
; ++t_ptr
)
395 *sc_end
++ = *t_ptr
; /* copy token into temp buffer */
399 ps
.search_brace
= false; /* stop looking for start of
401 bp_save
= buf_ptr
; /* save current input buffer */
403 buf_ptr
= save_com
; /* fix so that subsequent calls to
404 * lexi will take tokens out of
406 *sc_end
++ = ' ';/* add trailing blank, just in case */
410 } /* end of switch */
411 if (type_code
!= 0) /* we must make this check, just in case there
412 * was an unexpected EOF */
413 type_code
= lexi(); /* read another token */
414 /* if (ps.search_brace) ps.procname[0] = 0; */
415 if ((is_procname
= ps
.procname
[0]) && flushed_nl
416 && !procnames_start_line
&& ps
.in_decl
417 && type_code
== ident
)
419 } /* end of while (search_brace) */
422 if (type_code
== 0) { /* we got eof */
423 if (s_lab
!= e_lab
|| s_code
!= e_code
424 || s_com
!= e_com
) /* must dump end of line */
426 if (ps
.tos
> 1) /* check for balanced braces */
427 diag2(1, "Stuff missing from end of file");
430 printf("There were %d output lines and %d comments\n",
431 ps
.out_lines
, ps
.out_coms
);
432 printf("(Lines with comments)/(Lines with code): %6.3f\n",
433 (1.0 * ps
.com_lines
) / code_lines
);
439 (type_code
!= comment
) &&
440 (type_code
!= newline
) &&
441 (type_code
!= preesc
) &&
442 (type_code
!= form_feed
)) {
444 (type_code
!= semicolon
) &&
445 (type_code
!= lbrace
|| !btype_2
)) {
446 /* we should force a broken line here */
447 if (verbose
&& !flushed_nl
)
448 diag2(0, "Line broken");
451 ps
.want_blank
= false; /* dont insert blank at line start */
454 ps
.in_stmt
= true; /* turn on flag which causes an extra level of
455 * indentation. this is turned off by a ; or
457 if (s_com
!= e_com
) { /* the turkey has embedded a comment
458 * in a line. fix it */
460 for (t_ptr
= s_com
; *t_ptr
; ++t_ptr
) {
465 *e_code
= '\0'; /* null terminate code sect */
466 ps
.want_blank
= false;
470 else if (type_code
!= comment
) /* preserve force_nl thru a comment */
471 force_nl
= false; /* cancel forced newline after newline, form
476 /*-----------------------------------------------------*\
477 | do switch on type of token scanned |
478 \*-----------------------------------------------------*/
480 switch (type_code
) { /* now, decide what to do with the token */
482 case form_feed
: /* found a form feed in line */
483 ps
.use_ff
= true; /* a form feed is treated much like a newline */
485 ps
.want_blank
= false;
489 if (ps
.last_token
!= comma
|| ps
.p_l_follow
> 0
490 || !ps
.leave_comma
|| ps
.block_init
|| !break_comma
|| s_com
!= e_com
) {
492 ps
.want_blank
= false;
494 ++line_no
; /* keep track of input line number */
497 case lparen
: /* got a '(' or '[' */
498 ++ps
.p_l_follow
; /* count parens to make Healy happy */
499 if (ps
.want_blank
&& *token
!= '[' &&
500 (ps
.last_token
!= ident
|| proc_calls_space
501 || (ps
.its_a_keyword
&& (!ps
.sizeof_keyword
|| Bill_Shannon
))))
503 if (ps
.in_decl
&& !ps
.block_init
)
504 if (troff
&& !ps
.dumped_decl_indent
&& !is_procname
&& ps
.last_token
== decl
) {
505 ps
.dumped_decl_indent
= 1;
506 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
507 e_code
+= strlen(e_code
);
510 while ((e_code
- s_code
) < dec_ind
) {
514 *e_code
++ = token
[0];
517 *e_code
++ = token
[0];
518 ps
.paren_indents
[ps
.p_l_follow
- 1] = e_code
- s_code
;
519 if (sp_sw
&& ps
.p_l_follow
== 1 && extra_expression_indent
520 && ps
.paren_indents
[0] < 2 * ps
.ind_size
)
521 ps
.paren_indents
[0] = 2 * ps
.ind_size
;
522 ps
.want_blank
= false;
523 if (ps
.in_or_st
&& *token
== '(' && ps
.tos
<= 2) {
525 * this is a kluge to make sure that declarations will be
526 * aligned right if proc decl has an explicit type on it, i.e.
529 parse(semicolon
); /* I said this was a kluge... */
530 ps
.in_or_st
= false; /* turn off flag for structure decl or
533 if (ps
.sizeof_keyword
)
534 ps
.sizeof_mask
|= 1 << ps
.p_l_follow
;
537 case rparen
: /* got a ')' or ']' */
539 if (ps
.cast_mask
& (1 << ps
.p_l_follow
) & ~ps
.sizeof_mask
) {
541 ps
.cast_mask
&= (1 << ps
.p_l_follow
) - 1;
542 ps
.want_blank
= false;
544 ps
.want_blank
= true;
545 ps
.sizeof_mask
&= (1 << ps
.p_l_follow
) - 1;
546 if (--ps
.p_l_follow
< 0) {
548 diag3(0, "Extra %c", *token
);
550 if (e_code
== s_code
) /* if the paren starts the line */
551 ps
.paren_level
= ps
.p_l_follow
; /* then indent it */
553 *e_code
++ = token
[0];
555 if (sp_sw
&& (ps
.p_l_follow
== 0)) { /* check for end of if
556 * (...), or some such */
558 force_nl
= true;/* must force newline after if */
559 ps
.last_u_d
= true; /* inform lexi that a following
560 * operator is unary */
561 ps
.in_stmt
= false; /* dont use stmt continuation
564 parse(hd_type
); /* let parser worry about if, or whatever */
566 ps
.search_brace
= btype_2
; /* this should insure that constructs
567 * such as main(){...} and int[]{...}
568 * have their braces put in the right
572 case unary_op
: /* this could be any unary operation */
576 if (troff
&& !ps
.dumped_decl_indent
&& ps
.in_decl
&& !is_procname
) {
577 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
578 ps
.dumped_decl_indent
= 1;
579 e_code
+= strlen(e_code
);
582 const char *res
= token
;
584 if (ps
.in_decl
&& !ps
.block_init
) { /* if this is a unary op
585 * in a declaration, we
588 for (i
= 0; token
[i
]; ++i
); /* find length of token */
589 while ((e_code
- s_code
) < (dec_ind
- i
)) {
591 *e_code
++ = ' '; /* pad it */
594 if (troff
&& token
[0] == '-' && token
[1] == '>')
596 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
601 ps
.want_blank
= false;
604 case binary_op
: /* any binary operation */
608 const char *res
= token
;
627 else if (token
[1] == 0)
631 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
633 *e_code
++ = *t_ptr
; /* move the operator */
636 ps
.want_blank
= true;
639 case postop
: /* got a trailing ++ or -- */
640 *e_code
++ = token
[0];
641 *e_code
++ = token
[1];
642 ps
.want_blank
= true;
645 case question
: /* got a ? */
646 squest
++; /* this will be used when a later colon
647 * appears so we can distinguish the
648 * <c>?<n>:<n> construct */
652 ps
.want_blank
= true;
655 case casestmt
: /* got word 'case' or 'default' */
656 scase
= true; /* so we can process the later colon properly */
659 case colon
: /* got a ':' */
660 if (squest
> 0) { /* it is part of the <c>?<n>: <n> construct */
665 ps
.want_blank
= true;
670 ps
.want_blank
= false;
673 ps
.in_stmt
= false; /* seeing a label does not imply we are in a
675 for (t_ptr
= s_code
; *t_ptr
; ++t_ptr
)
676 *e_lab
++ = *t_ptr
; /* turn everything so far into a label */
682 force_nl
= ps
.pcase
= scase
; /* ps.pcase will be used by
683 * dump_line to decide how to
684 * indent the label. force_nl
685 * will force a case n: to be
686 * on a line by itself */
688 ps
.want_blank
= false;
691 case semicolon
: /* got a ';' */
692 ps
.in_or_st
= false;/* we are not in an initialization or
693 * structure declaration */
694 scase
= false; /* these will only need resetting in an error */
696 if (ps
.last_token
== rparen
&& rparen_count
== 0)
697 ps
.in_parameter_declaration
= 0;
701 ps
.block_init_level
= 0;
704 if (ps
.in_decl
&& s_code
== e_code
&& !ps
.block_init
)
705 while ((e_code
- s_code
) < (dec_ind
- 1)) {
710 ps
.in_decl
= (ps
.dec_nest
> 0); /* if we were in a first level
711 * structure declaration, we
714 if ((!sp_sw
|| hd_type
!= forstmt
) && ps
.p_l_follow
> 0) {
717 * This should be true iff there were unbalanced parens in the
718 * stmt. It is a bit complicated, because the semicolon might
721 diag2(1, "Unbalanced parens");
723 if (sp_sw
) { /* this is a check for an if, while, etc. with
724 * unbalanced parens */
726 parse(hd_type
); /* dont lose the if, or whatever */
730 ps
.want_blank
= true;
731 ps
.in_stmt
= (ps
.p_l_follow
> 0); /* we are no longer in the
732 * middle of a stmt */
734 if (!sp_sw
) { /* if not if for (;;) */
735 parse(semicolon
); /* let parser know about end of stmt */
736 force_nl
= true;/* force newline after an end of stmt */
740 case lbrace
: /* got a '{' */
741 ps
.in_stmt
= false; /* dont indent the {} */
743 force_nl
= true;/* force other stuff on same line as '{' onto
745 else if (ps
.block_init_level
<= 0)
746 ps
.block_init_level
= 1;
748 ps
.block_init_level
++;
750 if (s_code
!= e_code
&& !ps
.block_init
) {
753 ps
.want_blank
= false;
755 else if (ps
.in_parameter_declaration
&& !ps
.in_or_st
) {
757 if (function_brace_split
) { /* dump the line prior to the
760 ps
.want_blank
= false;
761 } else /* add a space between the decl and brace */
762 ps
.want_blank
= true;
765 if (ps
.in_parameter_declaration
)
766 prefix_blankline_requested
= 0;
768 if (ps
.p_l_follow
> 0) { /* check for preceding unbalanced
770 diag2(1, "Unbalanced parens");
772 if (sp_sw
) { /* check for unclosed if, for, etc. */
775 ps
.ind_level
= ps
.i_l_follow
;
778 if (s_code
== e_code
)
779 ps
.ind_stmt
= false; /* dont put extra indentation on line
781 if (ps
.in_decl
&& ps
.in_or_st
) { /* this is either a structure
782 * declaration or an init */
783 di_stack
[ps
.dec_nest
++] = dec_ind
;
787 ps
.decl_on_line
= false; /* we cant be in the middle of
788 * a declaration, so dont do
789 * special indentation of
791 if (blanklines_after_declarations_at_proctop
792 && ps
.in_parameter_declaration
)
793 postfix_blankline_requested
= 1;
794 ps
.in_parameter_declaration
= 0;
797 parse(lbrace
); /* let parser know about this */
798 if (ps
.want_blank
) /* put a blank before '{' if '{' is not at
801 ps
.want_blank
= false;
803 ps
.just_saw_decl
= 0;
806 case rbrace
: /* got a '}' */
807 if (ps
.p_stack
[ps
.tos
] == decl
&& !ps
.block_init
) /* semicolons can be
811 if (ps
.p_l_follow
) {/* check for unclosed if, for, else. */
812 diag2(1, "Unbalanced parens");
816 ps
.just_saw_decl
= 0;
817 ps
.block_init_level
--;
818 if (s_code
!= e_code
&& !ps
.block_init
) { /* '}' must be first on
821 diag2(0, "Line broken");
825 ps
.want_blank
= true;
826 ps
.in_stmt
= ps
.ind_stmt
= false;
827 if (ps
.dec_nest
> 0) { /* we are in multi-level structure
829 dec_ind
= di_stack
[--ps
.dec_nest
];
830 if (ps
.dec_nest
== 0 && !ps
.in_parameter_declaration
)
831 ps
.just_saw_decl
= 2;
834 prefix_blankline_requested
= 0;
835 parse(rbrace
); /* let parser know about this */
836 ps
.search_brace
= cuddle_else
&& ps
.p_stack
[ps
.tos
] == ifhead
837 && ps
.il
[ps
.tos
] >= ps
.ind_level
;
838 if (ps
.tos
<= 1 && blanklines_after_procs
&& ps
.dec_nest
<= 0)
839 postfix_blankline_requested
= 1;
842 case swstmt
: /* got keyword "switch" */
844 hd_type
= swstmt
; /* keep this for when we have seen the
846 goto copy_id
; /* go move the token into buffer */
848 case sp_paren
: /* token is if, while, for */
849 sp_sw
= true; /* the interesting stuff is done after the
850 * expression is scanned */
851 hd_type
= (*token
== 'i' ? ifstmt
:
852 (*token
== 'w' ? whilestmt
: forstmt
));
855 * remember the type of header for later use by parser
857 goto copy_id
; /* copy the token into line */
859 case sp_nparen
: /* got else, do */
862 if (e_code
!= s_code
&& (!cuddle_else
|| e_code
[-1] != '}')) {
864 diag2(0, "Line broken");
865 dump_line();/* make sure this starts a line */
866 ps
.want_blank
= false;
868 force_nl
= true;/* also, following stuff must go onto new line */
873 if (e_code
!= s_code
) { /* make sure this starts a line */
875 diag2(0, "Line broken");
877 ps
.want_blank
= false;
879 force_nl
= true;/* also, following stuff must go onto new line */
883 goto copy_id
; /* move the token into line */
885 case decl
: /* we have a declaration type (int, register,
887 parse(decl
); /* let parser worry about indentation */
888 if (ps
.last_token
== rparen
&& ps
.tos
<= 1) {
889 ps
.in_parameter_declaration
= 1;
890 if (s_code
!= e_code
) {
895 if (ps
.in_parameter_declaration
&& ps
.indent_parameters
&& ps
.dec_nest
== 0) {
896 ps
.ind_level
= ps
.i_l_follow
= 1;
899 ps
.in_or_st
= true; /* this might be a structure or initialization
901 ps
.in_decl
= ps
.decl_on_line
= true;
902 if ( /* !ps.in_or_st && */ ps
.dec_nest
<= 0)
903 ps
.just_saw_decl
= 2;
904 prefix_blankline_requested
= 0;
905 for (i
= 0; token
[i
++];); /* get length of token */
907 if (ps
.ind_level
== 0 || ps
.dec_nest
> 0) {
908 /* global variable or struct member in local variable */
909 dec_ind
= ps
.decl_indent
> 0 ? ps
.decl_indent
: i
;
910 tabs_to_var
= (use_tabs
? ps
.decl_indent
> 0 : 0);
913 dec_ind
= ps
.local_decl_indent
> 0 ? ps
.local_decl_indent
: i
;
914 tabs_to_var
= (use_tabs
? ps
.local_decl_indent
> 0 : 0);
918 case ident
: /* got an identifier or constant */
919 if (ps
.in_decl
) { /* if we are in a declaration, we must indent
921 if (is_procname
== 0 || !procnames_start_line
) {
922 if (!ps
.block_init
) {
923 if (troff
&& !ps
.dumped_decl_indent
) {
926 ps
.want_blank
= false;
927 sprintf(e_code
, "\n.De %dp+\200p\n", dec_ind
* 7);
928 ps
.dumped_decl_indent
= 1;
929 e_code
+= strlen(e_code
);
935 * in order to get the tab math right for
936 * indentations that are not multiples of 8 we
937 * need to modify both startpos and dec_ind
938 * (cur_dec_ind) here by eight minus the
939 * remainder of the current starting column
940 * divided by eight. This seems to be a
941 * properly working fix
943 startpos
= e_code
- s_code
;
944 cur_dec_ind
= dec_ind
;
946 if ((ps
.ind_level
* ps
.ind_size
) % 8 != 0) {
947 pos
+= (ps
.ind_level
* ps
.ind_size
) % 8;
948 cur_dec_ind
+= (ps
.ind_level
* ps
.ind_size
) % 8;
952 while ((pos
& ~7) + 8 <= cur_dec_ind
) {
955 pos
= (pos
& ~7) + 8;
958 while (pos
< cur_dec_ind
) {
963 if (ps
.want_blank
&& e_code
- s_code
== startpos
)
965 ps
.want_blank
= false;
971 ps
.want_blank
= false;
972 if (dec_ind
&& s_code
!= e_code
)
977 else if (sp_sw
&& ps
.p_l_follow
== 0) {
987 if (troff
&& ps
.its_a_keyword
) {
988 e_code
= chfont(&bodyf
, &keywordf
, e_code
);
989 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
991 *e_code
++ = keywordf
.allcaps
&& islower(*t_ptr
)
992 ? toupper(*t_ptr
) : *t_ptr
;
994 e_code
= chfont(&keywordf
, &bodyf
, e_code
);
997 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
1001 ps
.want_blank
= true;
1004 case period
: /* treat a period kind of like a binary
1006 *e_code
++ = '.'; /* move the period into line */
1007 ps
.want_blank
= false; /* dont put a blank after a period */
1011 ps
.want_blank
= (s_code
!= e_code
); /* only put blank after comma
1012 * if comma does not start the
1014 if (ps
.in_decl
&& is_procname
== 0 && !ps
.block_init
)
1015 while ((e_code
- s_code
) < (dec_ind
- 1)) {
1021 if (ps
.p_l_follow
== 0) {
1022 if (ps
.block_init_level
<= 0)
1024 if (break_comma
&& (!ps
.leave_comma
|| compute_code_target() + (e_code
- s_code
) > max_col
- 8))
1029 case preesc
: /* got the character '#' */
1030 if ((s_com
!= e_com
) ||
1034 *e_lab
++ = '#'; /* move whole line to 'label' buffer */
1041 while (*buf_ptr
== ' ' || *buf_ptr
== '\t') {
1043 if (buf_ptr
>= buf_end
)
1046 while (*buf_ptr
!= '\n' || (in_comment
&& !had_eof
)) {
1048 *e_lab
= *buf_ptr
++;
1049 if (buf_ptr
>= buf_end
)
1054 *e_lab
++ = BACKSLASH
;
1056 *e_lab
++ = *buf_ptr
++;
1057 if (buf_ptr
>= buf_end
)
1062 if (*buf_ptr
== '*' && !in_comment
&& !quote
) {
1064 *e_lab
++ = *buf_ptr
++;
1065 com_start
= e_lab
- s_lab
- 2;
1077 if (*buf_ptr
== '/' && in_comment
) {
1079 *e_lab
++ = *buf_ptr
++;
1080 com_end
= e_lab
- s_lab
;
1086 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1088 if (e_lab
- s_lab
== com_end
&& bp_save
== 0) { /* comment on
1089 * preprocessor line */
1090 if (sc_end
== 0) /* if this is the first comment, we
1091 * must set up the buffer */
1092 sc_end
= &(save_com
[0]);
1094 *sc_end
++ = '\n'; /* add newline between
1099 bcopy(s_lab
+ com_start
, sc_end
, com_end
- com_start
);
1100 sc_end
+= com_end
- com_start
;
1101 if (sc_end
>= &save_com
[sc_size
])
1103 e_lab
= s_lab
+ com_start
;
1104 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1106 bp_save
= buf_ptr
; /* save current input buffer */
1108 buf_ptr
= save_com
; /* fix so that subsequent calls to
1109 * lexi will take tokens out of
1111 *sc_end
++ = ' '; /* add trailing blank, just in case */
1115 *e_lab
= '\0'; /* null terminate line */
1119 if (strncmp(s_lab
, "#if", 3) == 0) {
1120 if (blanklines_around_conditional_compilation
) {
1122 prefix_blankline_requested
++;
1123 while ((c
= getc(input
)) == '\n');
1126 if ((size_t)ifdef_level
< sizeof(state_stack
)/sizeof(state_stack
[0])) {
1127 match_state
[ifdef_level
].tos
= -1;
1128 state_stack
[ifdef_level
++] = ps
;
1131 diag2(1, "#if stack overflow");
1133 else if (strncmp(s_lab
, "#else", 5) == 0)
1134 if (ifdef_level
<= 0)
1135 diag2(1, "Unmatched #else");
1137 match_state
[ifdef_level
- 1] = ps
;
1138 ps
= state_stack
[ifdef_level
- 1];
1140 else if (strncmp(s_lab
, "#endif", 6) == 0) {
1141 if (ifdef_level
<= 0)
1142 diag2(1, "Unmatched #endif");
1148 * This match needs to be more intelligent before the
1151 if (match_state
[ifdef_level
].tos
>= 0
1152 && bcmp(&ps
, &match_state
[ifdef_level
], sizeof ps
))
1153 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1156 if (blanklines_around_conditional_compilation
) {
1157 postfix_blankline_requested
++;
1158 n_real_blanklines
= 0;
1161 break; /* subsequent processing of the newline
1162 * character will cause the line to be printed */
1164 case comment
: /* we have gotten a / followed by * this is a biggie */
1165 if (flushed_nl
) { /* we should force a broken line here */
1168 ps
.want_blank
= false; /* dont insert blank at line start */
1173 } /* end of big switch stmt */
1175 *e_code
= '\0'; /* make sure code section is null terminated */
1176 if (type_code
!= comment
&& type_code
!= newline
&& type_code
!= preesc
)
1177 ps
.last_token
= type_code
;
1178 } /* end of main while (1) loop */
1182 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1183 * backup file will be ".Bfile" then make the backup file the input and
1184 * original input file the output
1191 char buff
[8 * 1024];
1194 /* construct file name .Bfile */
1195 for (p
= in_name
; *p
; p
++); /* skip to end of string */
1196 while (p
> in_name
&& *p
!= '/') /* find last '/' */
1200 sprintf(bakfile
, "%s.BAK", p
);
1202 /* copy in_name to backup file */
1203 bakchn
= creat(bakfile
, 0600);
1205 err(1, "%s", bakfile
);
1206 while ((n
= read(fileno(input
), buff
, sizeof buff
)) != 0)
1207 if (write(bakchn
, buff
, n
) != n
)
1208 err(1, "%s", bakfile
);
1210 err(1, "%s", in_name
);
1214 /* re-open backup file as the input file */
1215 input
= fopen(bakfile
, "r");
1217 err(1, "%s", bakfile
);
1218 /* now the original input file will be the output */
1219 output
= fopen(in_name
, "w");
1222 err(1, "%s", in_name
);