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
37 static const char copyright
[] =
38 "@(#) Copyright (c) 1985 Sun Microsystems, Inc.\n\
39 @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.\n\
40 @(#) Copyright (c) 1980, 1993\n\
41 The Regents of the University of California. All rights reserved.\n";
46 static char sccsid
[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93";
50 #include <sys/cdefs.h>
51 __FBSDID("$FreeBSD$");
53 #include <sys/param.h>
61 #include "indent_globs.h"
62 #include "indent_codes.h"
65 static void bakcopy(void);
67 const char *in_name
= "Standard Input"; /* will always point to name of input
69 const char *out_name
= "Standard Output"; /* will always point to name
71 char bakfile
[MAXPATHLEN
] = "";
74 main(int argc
, char **argv
)
77 int dec_ind
; /* current indentation for declarations */
78 int di_stack
[20]; /* a stack of structure indentation levels */
79 int flushed_nl
; /* used when buffering up comments to remember
80 * that a newline was passed over */
81 int force_nl
; /* when true, code must be broken */
82 int hd_type
= 0; /* used to store type of stmt for if (...),
84 int i
; /* local loop counter */
85 int scase
; /* set to true when we see a case, so we will
86 * know what to do with the following colon */
87 int sp_sw
; /* when true, we are in the expression of
88 * if(...), while(...), etc. */
89 int squest
; /* when this is positive, we have seen a ?
90 * without the matching : in a <c>?<s>:<s>
92 const char *t_ptr
; /* used for copying tokens */
93 int tabs_to_var
; /* true if using tabs to indent to var name */
94 int type_code
; /* the type of token, returned by lexi */
96 int last_else
= 0; /* true iff last keyword was an else */
99 /*-----------------------------------------------*\
101 \*-----------------------------------------------*/
105 ps
.p_stack
[0] = stmt
; /* this is the parser's stack */
106 ps
.last_nl
= true; /* this is true if the last thing scanned was
108 ps
.last_token
= semicolon
;
109 combuf
= (char *) malloc(bufsize
);
112 labbuf
= (char *) malloc(bufsize
);
115 codebuf
= (char *) malloc(bufsize
);
118 tokenbuf
= (char *) malloc(bufsize
);
119 if (tokenbuf
== NULL
)
121 l_com
= combuf
+ bufsize
- 5;
122 l_lab
= labbuf
+ bufsize
- 5;
123 l_code
= codebuf
+ bufsize
- 5;
124 l_token
= tokenbuf
+ bufsize
- 5;
125 combuf
[0] = codebuf
[0] = labbuf
[0] = ' '; /* set up code, label, and
127 combuf
[1] = codebuf
[1] = labbuf
[1] = '\0';
128 ps
.else_if
= 1; /* Default else-if special processing to on */
129 s_lab
= e_lab
= labbuf
+ 1;
130 s_code
= e_code
= codebuf
+ 1;
131 s_com
= e_com
= combuf
+ 1;
132 s_token
= e_token
= tokenbuf
+ 1;
134 in_buffer
= (char *) malloc(10);
135 if (in_buffer
== NULL
)
137 in_buffer_limit
= in_buffer
+ 8;
138 buf_ptr
= buf_end
= in_buffer
;
140 had_eof
= ps
.in_decl
= ps
.decl_on_line
= break_comma
= false;
141 sp_sw
= force_nl
= false;
145 di_stack
[ps
.dec_nest
= 0] = 0;
146 ps
.want_blank
= ps
.in_stmt
= ps
.ind_stmt
= false;
148 scase
= ps
.pcase
= false;
157 /*--------------------------------------------------*\
158 | COMMAND LINE SCAN |
159 \*--------------------------------------------------*/
162 max_col
= 78; /* -l78 */
163 lineup_to_parens
= 1; /* -lp */
164 ps
.ljust_decl
= 0; /* -ndj */
165 ps
.com_ind
= 33; /* -c33 */
166 star_comment_cont
= 1; /* -sc */
167 ps
.ind_size
= 8; /* -i8 */
169 ps
.decl_indent
= 16; /* -di16 */
170 ps
.local_decl_indent
= -1; /* if this is not set to some nonnegative value
171 * by an arg, we will set this equal to
173 ps
.indent_parameters
= 1; /* -ip */
174 ps
.decl_com_ind
= 0; /* if this is not set to some positive value
175 * by an arg, we will set this equal to
177 btype_2
= 1; /* -br */
178 cuddle_else
= 1; /* -ce */
179 ps
.unindent_displace
= 0; /* -d0 */
180 ps
.case_indent
= 0; /* -cli0 */
181 format_block_comments
= 1; /* -fcb */
182 format_col1_comments
= 1; /* -fc1 */
183 procnames_start_line
= 1; /* -psl */
184 proc_calls_space
= 0; /* -npcs */
185 comment_delimiter_on_blankline
= 1; /* -cdb */
186 ps
.leave_comma
= 1; /* -nbc */
189 for (i
= 1; i
< argc
; ++i
)
190 if (strcmp(argv
[i
], "-npro") == 0)
196 for (i
= 1; i
< argc
; ++i
) {
199 * look thru args (if any) for changes to defaults
201 if (argv
[i
][0] != '-') {/* no flag on parameter */
202 if (input
== NULL
) { /* we must have the input file */
203 in_name
= argv
[i
]; /* remember name of input file */
204 input
= fopen(in_name
, "r");
205 if (input
== NULL
) /* check for open error */
206 err(1, "%s", in_name
);
209 else if (output
== NULL
) { /* we have the output file */
210 out_name
= argv
[i
]; /* remember name of output file */
211 if (strcmp(in_name
, out_name
) == 0) { /* attempt to overwrite
213 errx(1, "input and output files must be different");
215 output
= fopen(out_name
, "w");
216 if (output
== NULL
) /* check for create error */
217 err(1, "%s", out_name
);
220 errx(1, "unknown parameter: %s", argv
[i
]);
227 if (output
== NULL
) {
228 if (troff
|| input
== stdin
)
236 ps
.com_ind
= 2; /* dont put normal comments before column 2 */
238 if (bodyf
.font
[0] == 0)
239 parsefont(&bodyf
, "R");
240 if (scomf
.font
[0] == 0)
241 parsefont(&scomf
, "I");
242 if (blkcomf
.font
[0] == 0)
243 blkcomf
= scomf
, blkcomf
.size
+= 2;
244 if (boxcomf
.font
[0] == 0)
246 if (stringf
.font
[0] == 0)
247 parsefont(&stringf
, "L");
248 if (keywordf
.font
[0] == 0)
249 parsefont(&keywordf
, "B");
250 writefdef(&bodyf
, 'B');
251 writefdef(&scomf
, 'C');
252 writefdef(&blkcomf
, 'L');
253 writefdef(&boxcomf
, 'X');
254 writefdef(&stringf
, 'S');
255 writefdef(&keywordf
, 'K');
257 if (block_comment_max_col
<= 0)
258 block_comment_max_col
= max_col
;
259 if (ps
.local_decl_indent
< 0) /* if not specified by user, set this */
260 ps
.local_decl_indent
= ps
.decl_indent
;
261 if (ps
.decl_com_ind
<= 0) /* if not specified by user, set this */
262 ps
.decl_com_ind
= ps
.ljust_decl
? (ps
.com_ind
<= 10 ? 2 : ps
.com_ind
- 8) : ps
.com_ind
;
263 if (continuation_indent
== 0)
264 continuation_indent
= ps
.ind_size
;
265 fill_buffer(); /* get first batch of stuff into input buffer */
276 col
= ((col
- 1) & ~7) + 9;
281 if (col
> ps
.ind_size
)
282 ps
.ind_level
= ps
.i_l_follow
= col
/ ps
.ind_size
;
285 const char *p
= in_name
,
291 fprintf(output
, ".Fn \"%s\"\n", beg
);
297 while (1) { /* this is the main loop. it will go until we
301 type_code
= lexi(); /* lexi reads one token. The actual
302 * characters read are stored in "token". lexi
303 * returns a code indicating the type of token */
304 is_procname
= ps
.procname
[0];
307 * The following code moves everything following an if (), while (),
308 * else, etc. up to the start of the following stmt to a buffer. This
309 * allows proper handling of both kinds of brace placement.
313 while (ps
.search_brace
) { /* if we scanned an if(), while(),
314 * etc., we might need to copy stuff
315 * into a buffer we must loop, copying
316 * stuff into save_com, until we find
317 * the start of the stmt which follows
318 * the if, or whatever */
324 break; /* form feeds and newlines found here will be
327 case lbrace
: /* this is a brace that starts the compound
329 if (sc_end
== 0) { /* ignore buffering if a comment wasn't
331 ps
.search_brace
= false;
335 save_com
[0] = '{'; /* we either want to put the brace
336 * right after the if */
337 goto sw_buffer
; /* go to common code to get out of
340 case comment
: /* we have a comment, so we must copy it into
342 if (!flushed_nl
|| sc_end
!= 0) {
343 if (sc_end
== 0) { /* if this is the first comment, we
344 * must set up the buffer */
345 save_com
[0] = save_com
[1] = ' ';
346 sc_end
= &(save_com
[2]);
349 *sc_end
++ = '\n'; /* add newline between
354 *sc_end
++ = '/'; /* copy in start of comment */
357 for (;;) { /* loop until we get to the end of the comment */
358 *sc_end
= *buf_ptr
++;
359 if (buf_ptr
>= buf_end
)
362 if (*sc_end
++ == '*' && *buf_ptr
== '/')
363 break; /* we are at end of comment */
365 if (sc_end
>= &(save_com
[sc_size
])) { /* check for temp buffer
367 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
372 *sc_end
++ = '/'; /* add ending slash */
373 if (++buf_ptr
>= buf_end
) /* get past / in buffer */
377 default: /* it is the start of a normal statement */
378 if (flushed_nl
) /* if we flushed a newline, make sure it is
381 if ((type_code
== sp_paren
&& *token
== 'i'
382 && last_else
&& ps
.else_if
)
383 || (type_code
== sp_nparen
&& *token
== 'e'
384 && e_code
!= s_code
&& e_code
[-1] == '}'))
387 if (sc_end
== 0) { /* ignore buffering if comment wasn't
389 ps
.search_brace
= false;
392 if (force_nl
) { /* if we should insert a nl here, put it into
395 --line_no
; /* this will be re-increased when the nl is
396 * read from the buffer */
399 if (verbose
&& !flushed_nl
) /* print error msg if the line
400 * was not already broken */
401 diag2(0, "Line broken");
404 for (t_ptr
= token
; *t_ptr
; ++t_ptr
)
405 *sc_end
++ = *t_ptr
; /* copy token into temp buffer */
409 ps
.search_brace
= false; /* stop looking for start of
411 bp_save
= buf_ptr
; /* save current input buffer */
413 buf_ptr
= save_com
; /* fix so that subsequent calls to
414 * lexi will take tokens out of
416 *sc_end
++ = ' ';/* add trailing blank, just in case */
420 } /* end of switch */
421 if (type_code
!= 0) /* we must make this check, just in case there
422 * was an unexpected EOF */
423 type_code
= lexi(); /* read another token */
424 /* if (ps.search_brace) ps.procname[0] = 0; */
425 if ((is_procname
= ps
.procname
[0]) && flushed_nl
426 && !procnames_start_line
&& ps
.in_decl
427 && type_code
== ident
)
429 } /* end of while (search_brace) */
432 if (type_code
== 0) { /* we got eof */
433 if (s_lab
!= e_lab
|| s_code
!= e_code
434 || s_com
!= e_com
) /* must dump end of line */
436 if (ps
.tos
> 1) /* check for balanced braces */
437 diag2(1, "Stuff missing from end of file");
440 printf("There were %d output lines and %d comments\n",
441 ps
.out_lines
, ps
.out_coms
);
442 printf("(Lines with comments)/(Lines with code): %6.3f\n",
443 (1.0 * ps
.com_lines
) / code_lines
);
449 (type_code
!= comment
) &&
450 (type_code
!= newline
) &&
451 (type_code
!= preesc
) &&
452 (type_code
!= form_feed
)) {
454 (type_code
!= semicolon
) &&
455 (type_code
!= lbrace
|| !btype_2
)) {
456 /* we should force a broken line here */
457 if (verbose
&& !flushed_nl
)
458 diag2(0, "Line broken");
461 ps
.want_blank
= false; /* dont insert blank at line start */
464 ps
.in_stmt
= true; /* turn on flag which causes an extra level of
465 * indentation. this is turned off by a ; or
467 if (s_com
!= e_com
) { /* the turkey has embedded a comment
468 * in a line. fix it */
470 for (t_ptr
= s_com
; *t_ptr
; ++t_ptr
) {
475 *e_code
= '\0'; /* null terminate code sect */
476 ps
.want_blank
= false;
480 else if (type_code
!= comment
) /* preserve force_nl thru a comment */
481 force_nl
= false; /* cancel forced newline after newline, form
486 /*-----------------------------------------------------*\
487 | do switch on type of token scanned |
488 \*-----------------------------------------------------*/
490 switch (type_code
) { /* now, decide what to do with the token */
492 case form_feed
: /* found a form feed in line */
493 ps
.use_ff
= true; /* a form feed is treated much like a newline */
495 ps
.want_blank
= false;
499 if (ps
.last_token
!= comma
|| ps
.p_l_follow
> 0
500 || !ps
.leave_comma
|| ps
.block_init
|| !break_comma
|| s_com
!= e_com
) {
502 ps
.want_blank
= false;
504 ++line_no
; /* keep track of input line number */
507 case lparen
: /* got a '(' or '[' */
508 ++ps
.p_l_follow
; /* count parens to make Healy happy */
509 if (ps
.want_blank
&& *token
!= '[' &&
510 (ps
.last_token
!= ident
|| proc_calls_space
511 || (ps
.its_a_keyword
&& (!ps
.sizeof_keyword
|| Bill_Shannon
))))
513 if (ps
.in_decl
&& !ps
.block_init
)
514 if (troff
&& !ps
.dumped_decl_indent
&& !is_procname
&& ps
.last_token
== decl
) {
515 ps
.dumped_decl_indent
= 1;
516 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
517 e_code
+= strlen(e_code
);
520 while ((e_code
- s_code
) < dec_ind
) {
524 *e_code
++ = token
[0];
527 *e_code
++ = token
[0];
528 ps
.paren_indents
[ps
.p_l_follow
- 1] = e_code
- s_code
;
529 if (sp_sw
&& ps
.p_l_follow
== 1 && extra_expression_indent
530 && ps
.paren_indents
[0] < 2 * ps
.ind_size
)
531 ps
.paren_indents
[0] = 2 * ps
.ind_size
;
532 ps
.want_blank
= false;
533 if (ps
.in_or_st
&& *token
== '(' && ps
.tos
<= 2) {
535 * this is a kluge to make sure that declarations will be
536 * aligned right if proc decl has an explicit type on it, i.e.
539 parse(semicolon
); /* I said this was a kluge... */
540 ps
.in_or_st
= false; /* turn off flag for structure decl or
543 if (ps
.sizeof_keyword
)
544 ps
.sizeof_mask
|= 1 << ps
.p_l_follow
;
547 case rparen
: /* got a ')' or ']' */
549 if (ps
.cast_mask
& (1 << ps
.p_l_follow
) & ~ps
.sizeof_mask
) {
551 ps
.cast_mask
&= (1 << ps
.p_l_follow
) - 1;
552 ps
.want_blank
= false;
554 ps
.want_blank
= true;
555 ps
.sizeof_mask
&= (1 << ps
.p_l_follow
) - 1;
556 if (--ps
.p_l_follow
< 0) {
558 diag3(0, "Extra %c", *token
);
560 if (e_code
== s_code
) /* if the paren starts the line */
561 ps
.paren_level
= ps
.p_l_follow
; /* then indent it */
563 *e_code
++ = token
[0];
565 if (sp_sw
&& (ps
.p_l_follow
== 0)) { /* check for end of if
566 * (...), or some such */
568 force_nl
= true;/* must force newline after if */
569 ps
.last_u_d
= true; /* inform lexi that a following
570 * operator is unary */
571 ps
.in_stmt
= false; /* dont use stmt continuation
574 parse(hd_type
); /* let parser worry about if, or whatever */
576 ps
.search_brace
= btype_2
; /* this should insure that constructs
577 * such as main(){...} and int[]{...}
578 * have their braces put in the right
582 case unary_op
: /* this could be any unary operation */
586 if (troff
&& !ps
.dumped_decl_indent
&& ps
.in_decl
&& !is_procname
) {
587 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
588 ps
.dumped_decl_indent
= 1;
589 e_code
+= strlen(e_code
);
592 const char *res
= token
;
594 if (ps
.in_decl
&& !ps
.block_init
) { /* if this is a unary op
595 * in a declaration, we
598 for (i
= 0; token
[i
]; ++i
); /* find length of token */
599 while ((e_code
- s_code
) < (dec_ind
- i
)) {
601 *e_code
++ = ' '; /* pad it */
604 if (troff
&& token
[0] == '-' && token
[1] == '>')
606 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
611 ps
.want_blank
= false;
614 case binary_op
: /* any binary operation */
618 const char *res
= token
;
637 else if (token
[1] == 0)
641 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
643 *e_code
++ = *t_ptr
; /* move the operator */
646 ps
.want_blank
= true;
649 case postop
: /* got a trailing ++ or -- */
650 *e_code
++ = token
[0];
651 *e_code
++ = token
[1];
652 ps
.want_blank
= true;
655 case question
: /* got a ? */
656 squest
++; /* this will be used when a later colon
657 * appears so we can distinguish the
658 * <c>?<n>:<n> construct */
662 ps
.want_blank
= true;
665 case casestmt
: /* got word 'case' or 'default' */
666 scase
= true; /* so we can process the later colon properly */
669 case colon
: /* got a ':' */
670 if (squest
> 0) { /* it is part of the <c>?<n>: <n> construct */
675 ps
.want_blank
= true;
680 ps
.want_blank
= false;
683 ps
.in_stmt
= false; /* seeing a label does not imply we are in a
685 for (t_ptr
= s_code
; *t_ptr
; ++t_ptr
)
686 *e_lab
++ = *t_ptr
; /* turn everything so far into a label */
692 force_nl
= ps
.pcase
= scase
; /* ps.pcase will be used by
693 * dump_line to decide how to
694 * indent the label. force_nl
695 * will force a case n: to be
696 * on a line by itself */
698 ps
.want_blank
= false;
701 case semicolon
: /* got a ';' */
702 ps
.in_or_st
= false;/* we are not in an initialization or
703 * structure declaration */
704 scase
= false; /* these will only need resetting in an error */
706 if (ps
.last_token
== rparen
&& rparen_count
== 0)
707 ps
.in_parameter_declaration
= 0;
711 ps
.block_init_level
= 0;
714 if (ps
.in_decl
&& s_code
== e_code
&& !ps
.block_init
)
715 while ((e_code
- s_code
) < (dec_ind
- 1)) {
720 ps
.in_decl
= (ps
.dec_nest
> 0); /* if we were in a first level
721 * structure declaration, we
724 if ((!sp_sw
|| hd_type
!= forstmt
) && ps
.p_l_follow
> 0) {
727 * This should be true iff there were unbalanced parens in the
728 * stmt. It is a bit complicated, because the semicolon might
731 diag2(1, "Unbalanced parens");
733 if (sp_sw
) { /* this is a check for an if, while, etc. with
734 * unbalanced parens */
736 parse(hd_type
); /* dont lose the if, or whatever */
740 ps
.want_blank
= true;
741 ps
.in_stmt
= (ps
.p_l_follow
> 0); /* we are no longer in the
742 * middle of a stmt */
744 if (!sp_sw
) { /* if not if for (;;) */
745 parse(semicolon
); /* let parser know about end of stmt */
746 force_nl
= true;/* force newline after an end of stmt */
750 case lbrace
: /* got a '{' */
751 ps
.in_stmt
= false; /* dont indent the {} */
753 force_nl
= true;/* force other stuff on same line as '{' onto
755 else if (ps
.block_init_level
<= 0)
756 ps
.block_init_level
= 1;
758 ps
.block_init_level
++;
760 if (s_code
!= e_code
&& !ps
.block_init
) {
763 ps
.want_blank
= false;
765 else if (ps
.in_parameter_declaration
&& !ps
.in_or_st
) {
767 if (function_brace_split
) { /* dump the line prior to the
770 ps
.want_blank
= false;
771 } else /* add a space between the decl and brace */
772 ps
.want_blank
= true;
775 if (ps
.in_parameter_declaration
)
776 prefix_blankline_requested
= 0;
778 if (ps
.p_l_follow
> 0) { /* check for preceding unbalanced
780 diag2(1, "Unbalanced parens");
782 if (sp_sw
) { /* check for unclosed if, for, etc. */
785 ps
.ind_level
= ps
.i_l_follow
;
788 if (s_code
== e_code
)
789 ps
.ind_stmt
= false; /* dont put extra indentation on line
791 if (ps
.in_decl
&& ps
.in_or_st
) { /* this is either a structure
792 * declaration or an init */
793 di_stack
[ps
.dec_nest
++] = dec_ind
;
797 ps
.decl_on_line
= false; /* we can't be in the middle of
798 * a declaration, so don't do
799 * special indentation of
801 if (blanklines_after_declarations_at_proctop
802 && ps
.in_parameter_declaration
)
803 postfix_blankline_requested
= 1;
804 ps
.in_parameter_declaration
= 0;
807 parse(lbrace
); /* let parser know about this */
808 if (ps
.want_blank
) /* put a blank before '{' if '{' is not at
811 ps
.want_blank
= false;
813 ps
.just_saw_decl
= 0;
816 case rbrace
: /* got a '}' */
817 if (ps
.p_stack
[ps
.tos
] == decl
&& !ps
.block_init
) /* semicolons can be
821 if (ps
.p_l_follow
) {/* check for unclosed if, for, else. */
822 diag2(1, "Unbalanced parens");
826 ps
.just_saw_decl
= 0;
827 ps
.block_init_level
--;
828 if (s_code
!= e_code
&& !ps
.block_init
) { /* '}' must be first on
831 diag2(0, "Line broken");
835 ps
.want_blank
= true;
836 ps
.in_stmt
= ps
.ind_stmt
= false;
837 if (ps
.dec_nest
> 0) { /* we are in multi-level structure
839 dec_ind
= di_stack
[--ps
.dec_nest
];
840 if (ps
.dec_nest
== 0 && !ps
.in_parameter_declaration
)
841 ps
.just_saw_decl
= 2;
844 prefix_blankline_requested
= 0;
845 parse(rbrace
); /* let parser know about this */
846 ps
.search_brace
= cuddle_else
&& ps
.p_stack
[ps
.tos
] == ifhead
847 && ps
.il
[ps
.tos
] >= ps
.ind_level
;
848 if (ps
.tos
<= 1 && blanklines_after_procs
&& ps
.dec_nest
<= 0)
849 postfix_blankline_requested
= 1;
852 case swstmt
: /* got keyword "switch" */
854 hd_type
= swstmt
; /* keep this for when we have seen the
856 goto copy_id
; /* go move the token into buffer */
858 case sp_paren
: /* token is if, while, for */
859 sp_sw
= true; /* the interesting stuff is done after the
860 * expression is scanned */
861 hd_type
= (*token
== 'i' ? ifstmt
:
862 (*token
== 'w' ? whilestmt
: forstmt
));
865 * remember the type of header for later use by parser
867 goto copy_id
; /* copy the token into line */
869 case sp_nparen
: /* got else, do */
872 if (e_code
!= s_code
&& (!cuddle_else
|| e_code
[-1] != '}')) {
874 diag2(0, "Line broken");
875 dump_line();/* make sure this starts a line */
876 ps
.want_blank
= false;
878 force_nl
= true;/* also, following stuff must go onto new line */
883 if (e_code
!= s_code
) { /* make sure this starts a line */
885 diag2(0, "Line broken");
887 ps
.want_blank
= false;
889 force_nl
= true;/* also, following stuff must go onto new line */
893 goto copy_id
; /* move the token into line */
895 case decl
: /* we have a declaration type (int, register,
897 parse(decl
); /* let parser worry about indentation */
898 if (ps
.last_token
== rparen
&& ps
.tos
<= 1) {
899 ps
.in_parameter_declaration
= 1;
900 if (s_code
!= e_code
) {
905 if (ps
.in_parameter_declaration
&& ps
.indent_parameters
&& ps
.dec_nest
== 0) {
906 ps
.ind_level
= ps
.i_l_follow
= 1;
909 ps
.in_or_st
= true; /* this might be a structure or initialization
911 ps
.in_decl
= ps
.decl_on_line
= true;
912 if ( /* !ps.in_or_st && */ ps
.dec_nest
<= 0)
913 ps
.just_saw_decl
= 2;
914 prefix_blankline_requested
= 0;
915 for (i
= 0; token
[i
++];); /* get length of token */
917 if (ps
.ind_level
== 0 || ps
.dec_nest
> 0) {
918 /* global variable or struct member in local variable */
919 dec_ind
= ps
.decl_indent
> 0 ? ps
.decl_indent
: i
;
920 tabs_to_var
= (use_tabs
? ps
.decl_indent
> 0 : 0);
923 dec_ind
= ps
.local_decl_indent
> 0 ? ps
.local_decl_indent
: i
;
924 tabs_to_var
= (use_tabs
? ps
.local_decl_indent
> 0 : 0);
928 case ident
: /* got an identifier or constant */
929 if (ps
.in_decl
) { /* if we are in a declaration, we must indent
931 if (is_procname
== 0 || !procnames_start_line
) {
932 if (!ps
.block_init
) {
933 if (troff
&& !ps
.dumped_decl_indent
) {
936 ps
.want_blank
= false;
937 sprintf(e_code
, "\n.De %dp+\200p\n", dec_ind
* 7);
938 ps
.dumped_decl_indent
= 1;
939 e_code
+= strlen(e_code
);
945 * in order to get the tab math right for
946 * indentations that are not multiples of 8 we
947 * need to modify both startpos and dec_ind
948 * (cur_dec_ind) here by eight minus the
949 * remainder of the current starting column
950 * divided by eight. This seems to be a
951 * properly working fix
953 startpos
= e_code
- s_code
;
954 cur_dec_ind
= dec_ind
;
956 if ((ps
.ind_level
* ps
.ind_size
) % 8 != 0) {
957 pos
+= (ps
.ind_level
* ps
.ind_size
) % 8;
958 cur_dec_ind
+= (ps
.ind_level
* ps
.ind_size
) % 8;
962 while ((pos
& ~7) + 8 <= cur_dec_ind
) {
965 pos
= (pos
& ~7) + 8;
968 while (pos
< cur_dec_ind
) {
973 if (ps
.want_blank
&& e_code
- s_code
== startpos
)
975 ps
.want_blank
= false;
981 ps
.want_blank
= false;
982 if (dec_ind
&& s_code
!= e_code
) {
989 else if (sp_sw
&& ps
.p_l_follow
== 0) {
999 if (troff
&& ps
.its_a_keyword
) {
1000 e_code
= chfont(&bodyf
, &keywordf
, e_code
);
1001 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
1003 *e_code
++ = keywordf
.allcaps
&& islower(*t_ptr
)
1004 ? toupper(*t_ptr
) : *t_ptr
;
1006 e_code
= chfont(&keywordf
, &bodyf
, e_code
);
1009 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
1013 ps
.want_blank
= true;
1016 case period
: /* treat a period kind of like a binary
1018 *e_code
++ = '.'; /* move the period into line */
1019 ps
.want_blank
= false; /* dont put a blank after a period */
1023 ps
.want_blank
= (s_code
!= e_code
); /* only put blank after comma
1024 * if comma does not start the
1026 if (ps
.in_decl
&& is_procname
== 0 && !ps
.block_init
)
1027 while ((e_code
- s_code
) < (dec_ind
- 1)) {
1033 if (ps
.p_l_follow
== 0) {
1034 if (ps
.block_init_level
<= 0)
1036 if (break_comma
&& (!ps
.leave_comma
|| compute_code_target() + (e_code
- s_code
) > max_col
- 8))
1041 case preesc
: /* got the character '#' */
1042 if ((s_com
!= e_com
) ||
1046 *e_lab
++ = '#'; /* move whole line to 'label' buffer */
1053 while (*buf_ptr
== ' ' || *buf_ptr
== '\t') {
1055 if (buf_ptr
>= buf_end
)
1058 while (*buf_ptr
!= '\n' || (in_comment
&& !had_eof
)) {
1060 *e_lab
= *buf_ptr
++;
1061 if (buf_ptr
>= buf_end
)
1066 *e_lab
++ = BACKSLASH
;
1068 *e_lab
++ = *buf_ptr
++;
1069 if (buf_ptr
>= buf_end
)
1074 if (*buf_ptr
== '*' && !in_comment
&& !quote
) {
1076 *e_lab
++ = *buf_ptr
++;
1077 com_start
= e_lab
- s_lab
- 2;
1089 if (*buf_ptr
== '/' && in_comment
) {
1091 *e_lab
++ = *buf_ptr
++;
1092 com_end
= e_lab
- s_lab
;
1098 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1100 if (e_lab
- s_lab
== com_end
&& bp_save
== 0) { /* comment on
1101 * preprocessor line */
1102 if (sc_end
== 0) /* if this is the first comment, we
1103 * must set up the buffer */
1104 sc_end
= &(save_com
[0]);
1106 *sc_end
++ = '\n'; /* add newline between
1111 bcopy(s_lab
+ com_start
, sc_end
, com_end
- com_start
);
1112 sc_end
+= com_end
- com_start
;
1113 if (sc_end
>= &save_com
[sc_size
])
1115 e_lab
= s_lab
+ com_start
;
1116 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1118 bp_save
= buf_ptr
; /* save current input buffer */
1120 buf_ptr
= save_com
; /* fix so that subsequent calls to
1121 * lexi will take tokens out of
1123 *sc_end
++ = ' '; /* add trailing blank, just in case */
1127 *e_lab
= '\0'; /* null terminate line */
1131 if (strncmp(s_lab
, "#if", 3) == 0) {
1132 if (blanklines_around_conditional_compilation
) {
1134 prefix_blankline_requested
++;
1135 while ((c
= getc(input
)) == '\n');
1138 if ((size_t)ifdef_level
< sizeof(state_stack
)/sizeof(state_stack
[0])) {
1139 match_state
[ifdef_level
].tos
= -1;
1140 state_stack
[ifdef_level
++] = ps
;
1143 diag2(1, "#if stack overflow");
1145 else if (strncmp(s_lab
, "#else", 5) == 0)
1146 if (ifdef_level
<= 0)
1147 diag2(1, "Unmatched #else");
1149 match_state
[ifdef_level
- 1] = ps
;
1150 ps
= state_stack
[ifdef_level
- 1];
1152 else if (strncmp(s_lab
, "#endif", 6) == 0) {
1153 if (ifdef_level
<= 0)
1154 diag2(1, "Unmatched #endif");
1160 * This match needs to be more intelligent before the
1163 if (match_state
[ifdef_level
].tos
>= 0
1164 && bcmp(&ps
, &match_state
[ifdef_level
], sizeof ps
))
1165 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1168 if (blanklines_around_conditional_compilation
) {
1169 postfix_blankline_requested
++;
1170 n_real_blanklines
= 0;
1173 break; /* subsequent processing of the newline
1174 * character will cause the line to be printed */
1176 case comment
: /* we have gotten a / followed by * this is a biggie */
1177 if (flushed_nl
) { /* we should force a broken line here */
1180 ps
.want_blank
= false; /* dont insert blank at line start */
1185 } /* end of big switch stmt */
1187 *e_code
= '\0'; /* make sure code section is null terminated */
1188 if (type_code
!= comment
&& type_code
!= newline
&& type_code
!= preesc
)
1189 ps
.last_token
= type_code
;
1190 } /* end of main while (1) loop */
1194 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1195 * backup file will be ".Bfile" then make the backup file the input and
1196 * original input file the output
1203 char buff
[8 * 1024];
1206 /* construct file name .Bfile */
1207 for (p
= in_name
; *p
; p
++); /* skip to end of string */
1208 while (p
> in_name
&& *p
!= '/') /* find last '/' */
1212 sprintf(bakfile
, "%s.BAK", p
);
1214 /* copy in_name to backup file */
1215 bakchn
= creat(bakfile
, 0600);
1217 err(1, "%s", bakfile
);
1218 while ((n
= read(fileno(input
), buff
, sizeof(buff
))) > 0)
1219 if (write(bakchn
, buff
, n
) != n
)
1220 err(1, "%s", bakfile
);
1222 err(1, "%s", in_name
);
1226 /* re-open backup file as the input file */
1227 input
= fopen(bakfile
, "r");
1229 err(1, "%s", bakfile
);
1230 /* now the original input file will be the output */
1231 output
= fopen(in_name
, "w");
1232 if (output
== NULL
) {
1234 err(1, "%s", in_name
);