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>
54 #include <sys/capsicum.h>
63 #include "indent_globs.h"
64 #include "indent_codes.h"
67 static void bakcopy(void);
68 static void indent_declaration(int, int);
70 const char *in_name = "Standard Input"; /* will always point to name of input
72 const char *out_name = "Standard Output"; /* will always point to name
74 const char *simple_backup_suffix = ".BAK"; /* Suffix to use for backup
76 char bakfile[MAXPATHLEN] = "";
79 main(int argc, char **argv)
83 int dec_ind; /* current indentation for declarations */
84 int di_stack[20]; /* a stack of structure indentation levels */
85 int flushed_nl; /* used when buffering up comments to remember
86 * that a newline was passed over */
87 int force_nl; /* when true, code must be broken */
88 int hd_type = 0; /* used to store type of stmt for if (...),
90 int i; /* local loop counter */
91 int scase; /* set to true when we see a case, so we will
92 * know what to do with the following colon */
93 int sp_sw; /* when true, we are in the expression of
94 * if(...), while(...), etc. */
95 int squest; /* when this is positive, we have seen a ?
96 * without the matching : in a <c>?<s>:<s>
98 const char *t_ptr; /* used for copying tokens */
99 int tabs_to_var; /* true if using tabs to indent to var name */
100 int type_code; /* the type of token, returned by lexi */
102 int last_else = 0; /* true iff last keyword was an else */
103 const char *profile_name = NULL;
104 const char *envval = NULL;
106 /*-----------------------------------------------*\
108 \*-----------------------------------------------*/
112 ps.p_stack[0] = stmt; /* this is the parser's stack */
113 ps.last_nl = true; /* this is true if the last thing scanned was
115 ps.last_token = semicolon;
116 combuf = (char *) malloc(bufsize);
119 labbuf = (char *) malloc(bufsize);
122 codebuf = (char *) malloc(bufsize);
125 tokenbuf = (char *) malloc(bufsize);
126 if (tokenbuf == NULL)
129 l_com = combuf + bufsize - 5;
130 l_lab = labbuf + bufsize - 5;
131 l_code = codebuf + bufsize - 5;
132 l_token = tokenbuf + bufsize - 5;
133 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
135 combuf[1] = codebuf[1] = labbuf[1] = '\0';
136 ps.else_if = 1; /* Default else-if special processing to on */
137 s_lab = e_lab = labbuf + 1;
138 s_code = e_code = codebuf + 1;
139 s_com = e_com = combuf + 1;
140 s_token = e_token = tokenbuf + 1;
142 in_buffer = (char *) malloc(10);
143 if (in_buffer == NULL)
145 in_buffer_limit = in_buffer + 8;
146 buf_ptr = buf_end = in_buffer;
148 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
149 sp_sw = force_nl = false;
153 di_stack[ps.dec_nest = 0] = 0;
154 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
156 scase = ps.pcase = false;
165 envval = getenv("SIMPLE_BACKUP_SUFFIX");
167 simple_backup_suffix = envval;
169 /*--------------------------------------------------*\
170 | COMMAND LINE SCAN |
171 \*--------------------------------------------------*/
174 max_col = 78; /* -l78 */
175 lineup_to_parens = 1; /* -lp */
176 ps.ljust_decl = 0; /* -ndj */
177 ps.com_ind = 33; /* -c33 */
178 star_comment_cont = 1; /* -sc */
179 ps.ind_size = 8; /* -i8 */
181 ps.decl_indent = 16; /* -di16 */
182 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
183 * by an arg, we will set this equal to
185 ps.indent_parameters = 1; /* -ip */
186 ps.decl_com_ind = 0; /* if this is not set to some positive value
187 * by an arg, we will set this equal to
189 btype_2 = 1; /* -br */
190 cuddle_else = 1; /* -ce */
191 ps.unindent_displace = 0; /* -d0 */
192 ps.case_indent = 0; /* -cli0 */
193 format_block_comments = 1; /* -fcb */
194 format_col1_comments = 1; /* -fc1 */
195 procnames_start_line = 1; /* -psl */
196 proc_calls_space = 0; /* -npcs */
197 comment_delimiter_on_blankline = 1; /* -cdb */
198 ps.leave_comma = 1; /* -nbc */
201 for (i = 1; i < argc; ++i)
202 if (strcmp(argv[i], "-npro") == 0)
204 else if (argv[i][0] == '-' && argv[i][1] == 'P' && argv[i][2] != '\0')
205 profile_name = argv[i]; /* non-empty -P (set profile) */
208 set_profile(profile_name);
210 for (i = 1; i < argc; ++i) {
213 * look thru args (if any) for changes to defaults
215 if (argv[i][0] != '-') {/* no flag on parameter */
216 if (input == NULL) { /* we must have the input file */
217 in_name = argv[i]; /* remember name of input file */
218 input = fopen(in_name, "r");
219 if (input == NULL) /* check for open error */
220 err(1, "%s", in_name);
223 else if (output == NULL) { /* we have the output file */
224 out_name = argv[i]; /* remember name of output file */
225 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
227 errx(1, "input and output files must be different");
229 output = fopen(out_name, "w");
230 if (output == NULL) /* check for create error */
231 err(1, "%s", out_name);
234 errx(1, "unknown parameter: %s", argv[i]);
241 if (output == NULL) {
242 if (troff || input == stdin)
250 /* Restrict input/output descriptors and enter Capsicum sandbox. */
251 cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE);
252 if (cap_rights_limit(fileno(output), &rights) < 0 && errno != ENOSYS)
253 err(EXIT_FAILURE, "unable to limit rights for %s", out_name);
254 cap_rights_init(&rights, CAP_FSTAT, CAP_READ);
255 if (cap_rights_limit(fileno(input), &rights) < 0 && errno != ENOSYS)
256 err(EXIT_FAILURE, "unable to limit rights for %s", in_name);
257 if (cap_enter() < 0 && errno != ENOSYS)
258 err(EXIT_FAILURE, "unable to enter capability mode");
261 ps.com_ind = 2; /* dont put normal comments before column 2 */
263 if (bodyf.font[0] == 0)
264 parsefont(&bodyf, "R");
265 if (scomf.font[0] == 0)
266 parsefont(&scomf, "I");
267 if (blkcomf.font[0] == 0)
268 blkcomf = scomf, blkcomf.size += 2;
269 if (boxcomf.font[0] == 0)
271 if (stringf.font[0] == 0)
272 parsefont(&stringf, "L");
273 if (keywordf.font[0] == 0)
274 parsefont(&keywordf, "B");
275 writefdef(&bodyf, 'B');
276 writefdef(&scomf, 'C');
277 writefdef(&blkcomf, 'L');
278 writefdef(&boxcomf, 'X');
279 writefdef(&stringf, 'S');
280 writefdef(&keywordf, 'K');
282 if (block_comment_max_col <= 0)
283 block_comment_max_col = max_col;
284 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
285 ps.local_decl_indent = ps.decl_indent;
286 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
287 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
288 if (continuation_indent == 0)
289 continuation_indent = ps.ind_size;
290 fill_buffer(); /* get first batch of stuff into input buffer */
301 col = tabsize * (1 + (col - 1) / tabsize) + 1;
306 if (col > ps.ind_size)
307 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
310 const char *p = in_name,
316 fprintf(output, ".Fn \"%s\"\n", beg);
322 while (1) { /* this is the main loop. it will go until we
326 type_code = lexi(); /* lexi reads one token. The actual
327 * characters read are stored in "token". lexi
328 * returns a code indicating the type of token */
329 is_procname = ps.procname[0];
332 * The following code moves everything following an if (), while (),
333 * else, etc. up to the start of the following stmt to a buffer. This
334 * allows proper handling of both kinds of brace placement.
338 while (ps.search_brace) { /* if we scanned an if(), while(),
339 * etc., we might need to copy stuff
340 * into a buffer we must loop, copying
341 * stuff into save_com, until we find
342 * the start of the stmt which follows
343 * the if, or whatever */
347 if (sc_end != NULL) { /* dump comment, if any */
348 *sc_end++ = '\n'; /* newlines are needed in this case */
353 break; /* form feeds and newlines found here will be
356 case lbrace: /* this is a brace that starts the compound
358 if (sc_end == NULL) { /* ignore buffering if a comment wasn't
360 ps.search_brace = false;
364 save_com[0] = '{'; /* we either want to put the brace
365 * right after the if */
366 goto sw_buffer; /* go to common code to get out of
369 case comment: /* we have a comment, so we must copy it into
371 if (!flushed_nl || sc_end != NULL) {
372 if (sc_end == NULL) { /* if this is the first comment, we
373 * must set up the buffer */
374 save_com[0] = save_com[1] = ' ';
375 sc_end = &(save_com[2]);
378 *sc_end++ = '\n'; /* add newline between
383 *sc_end++ = '/'; /* copy in start of comment */
386 for (;;) { /* loop until we get to the end of the comment */
387 *sc_end = *buf_ptr++;
388 if (buf_ptr >= buf_end)
391 if (*sc_end++ == '*' && *buf_ptr == '/')
392 break; /* we are at end of comment */
394 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
396 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
401 *sc_end++ = '/'; /* add ending slash */
402 if (++buf_ptr >= buf_end) /* get past / in buffer */
406 default: /* it is the start of a normal statement */
407 if (flushed_nl) /* if we flushed a newline, make sure it is
410 if ((type_code == sp_paren && *token == 'i'
411 && last_else && ps.else_if)
412 || (type_code == sp_nparen && *token == 'e'
413 && e_code != s_code && e_code[-1] == '}'))
416 if (sc_end == NULL) { /* ignore buffering if comment wasn't
418 ps.search_brace = false;
421 if (force_nl) { /* if we should insert a nl here, put it into
424 --line_no; /* this will be re-increased when the nl is
425 * read from the buffer */
428 if (verbose && !flushed_nl) /* print error msg if the line
429 * was not already broken */
430 diag2(0, "Line broken");
433 for (t_ptr = token; *t_ptr; ++t_ptr)
434 *sc_end++ = *t_ptr; /* copy token into temp buffer */
438 ps.search_brace = false; /* stop looking for start of
440 bp_save = buf_ptr; /* save current input buffer */
442 buf_ptr = save_com; /* fix so that subsequent calls to
443 * lexi will take tokens out of
445 *sc_end++ = ' ';/* add trailing blank, just in case */
449 } /* end of switch */
450 if (type_code != 0) /* we must make this check, just in case there
451 * was an unexpected EOF */
452 type_code = lexi(); /* read another token */
453 /* if (ps.search_brace) ps.procname[0] = 0; */
454 if ((is_procname = ps.procname[0]) && flushed_nl
455 && !procnames_start_line && ps.in_decl
456 && type_code == ident)
458 } /* end of while (search_brace) */
461 if (type_code == 0) { /* we got eof */
462 if (s_lab != e_lab || s_code != e_code
463 || s_com != e_com) /* must dump end of line */
465 if (ps.tos > 1) /* check for balanced braces */
466 diag2(1, "Stuff missing from end of file");
469 printf("There were %d output lines and %d comments\n",
470 ps.out_lines, ps.out_coms);
471 printf("(Lines with comments)/(Lines with code): %6.3f\n",
472 (1.0 * ps.com_lines) / code_lines);
478 (type_code != comment) &&
479 (type_code != newline) &&
480 (type_code != preesc) &&
481 (type_code != form_feed)) {
483 (type_code != semicolon) &&
484 (type_code != lbrace || !btype_2)) {
485 /* we should force a broken line here */
486 if (verbose && !flushed_nl)
487 diag2(0, "Line broken");
490 ps.want_blank = false; /* dont insert blank at line start */
493 ps.in_stmt = true; /* turn on flag which causes an extra level of
494 * indentation. this is turned off by a ; or
496 if (s_com != e_com) { /* the turkey has embedded a comment
497 * in a line. fix it */
499 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
504 *e_code = '\0'; /* null terminate code sect */
505 ps.want_blank = false;
509 else if (type_code != comment) /* preserve force_nl thru a comment */
510 force_nl = false; /* cancel forced newline after newline, form
515 /*-----------------------------------------------------*\
516 | do switch on type of token scanned |
517 \*-----------------------------------------------------*/
519 switch (type_code) { /* now, decide what to do with the token */
521 case form_feed: /* found a form feed in line */
522 ps.use_ff = true; /* a form feed is treated much like a newline */
524 ps.want_blank = false;
528 if (ps.last_token != comma || ps.p_l_follow > 0
529 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
531 ps.want_blank = false;
533 ++line_no; /* keep track of input line number */
536 case lparen: /* got a '(' or '[' */
537 /* count parens to make Healy happy */
538 if (++ps.p_l_follow == nitems(ps.paren_indents)) {
539 diag3(0, "Reached internal limit of %d unclosed parens",
540 nitems(ps.paren_indents));
543 if (ps.want_blank && *token != '[' &&
544 ((ps.last_token != ident && ps.last_token != funcname) ||
546 /* offsetof (1) is never allowed a space; sizeof (2) gets
547 * one iff -bs; all other keywords (>2) always get a space
549 ps.keyword + Bill_Shannon > 2))
551 ps.want_blank = false;
552 if (ps.in_decl && !ps.block_init && !ps.dumped_decl_indent &&
554 /* function pointer declarations */
556 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
557 e_code += strlen(e_code);
560 indent_declaration(dec_ind, tabs_to_var);
562 ps.dumped_decl_indent = true;
565 *e_code++ = token[0];
566 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
567 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
568 && ps.paren_indents[0] < 2 * ps.ind_size)
569 ps.paren_indents[0] = 2 * ps.ind_size;
570 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
572 * this is a kluge to make sure that declarations will be
573 * aligned right if proc decl has an explicit type on it, i.e.
576 parse(semicolon); /* I said this was a kluge... */
577 ps.in_or_st = false; /* turn off flag for structure decl or
580 /* parenthesized type following sizeof or offsetof is not a cast */
581 if (ps.keyword == 1 || ps.keyword == 2)
582 ps.not_cast_mask |= 1 << ps.p_l_follow;
585 case rparen: /* got a ')' or ']' */
586 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.not_cast_mask) {
588 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
589 ps.want_blank = space_after_cast;
591 ps.want_blank = true;
592 ps.not_cast_mask &= (1 << ps.p_l_follow) - 1;
593 if (--ps.p_l_follow < 0) {
595 diag3(0, "Extra %c", *token);
597 if (e_code == s_code) /* if the paren starts the line */
598 ps.paren_level = ps.p_l_follow; /* then indent it */
600 *e_code++ = token[0];
602 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
603 * (...), or some such */
605 force_nl = true;/* must force newline after if */
606 ps.last_u_d = true; /* inform lexi that a following
607 * operator is unary */
608 ps.in_stmt = false; /* dont use stmt continuation
611 parse(hd_type); /* let parser worry about if, or whatever */
613 ps.search_brace = btype_2; /* this should insure that constructs
614 * such as main(){...} and int[]{...}
615 * have their braces put in the right
619 case unary_op: /* this could be any unary operation */
620 if (!ps.dumped_decl_indent && ps.in_decl && !is_procname &&
622 /* pointer declarations */
626 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7,
628 e_code += strlen(e_code);
631 /* if this is a unary op in a declaration, we should
632 * indent this token */
633 for (i = 0; token[i]; ++i)
634 /* find length of token */;
635 indent_declaration(dec_ind - i, tabs_to_var);
637 ps.dumped_decl_indent = true;
639 else if (ps.want_blank)
642 const char *res = token;
644 if (troff && token[0] == '-' && token[1] == '>')
646 for (t_ptr = res; *t_ptr; ++t_ptr) {
651 ps.want_blank = false;
654 case binary_op: /* any binary operation */
658 const char *res = token;
677 else if (token[1] == 0)
681 for (t_ptr = res; *t_ptr; ++t_ptr) {
683 *e_code++ = *t_ptr; /* move the operator */
686 ps.want_blank = true;
689 case postop: /* got a trailing ++ or -- */
690 *e_code++ = token[0];
691 *e_code++ = token[1];
692 ps.want_blank = true;
695 case question: /* got a ? */
696 squest++; /* this will be used when a later colon
697 * appears so we can distinguish the
698 * <c>?<n>:<n> construct */
702 ps.want_blank = true;
705 case casestmt: /* got word 'case' or 'default' */
706 scase = true; /* so we can process the later colon properly */
709 case colon: /* got a ':' */
710 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
715 ps.want_blank = true;
720 ps.want_blank = false;
723 ps.in_stmt = false; /* seeing a label does not imply we are in a
725 for (t_ptr = s_code; *t_ptr; ++t_ptr)
726 *e_lab++ = *t_ptr; /* turn everything so far into a label */
732 force_nl = ps.pcase = scase; /* ps.pcase will be used by
733 * dump_line to decide how to
734 * indent the label. force_nl
735 * will force a case n: to be
736 * on a line by itself */
738 ps.want_blank = false;
741 case semicolon: /* got a ';' */
742 if (ps.dec_nest == 0)
743 ps.in_or_st = false;/* we are not in an initialization or
744 * structure declaration */
745 scase = false; /* these will only need resetting in an error */
747 if (ps.last_token == rparen)
748 ps.in_parameter_declaration = 0;
750 ps.not_cast_mask = 0;
752 ps.block_init_level = 0;
755 if (ps.in_decl && s_code == e_code && !ps.block_init &&
756 !ps.dumped_decl_indent) {
757 /* indent stray semicolons in declarations */
758 indent_declaration(dec_ind - 1, tabs_to_var);
759 ps.dumped_decl_indent = true;
762 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
763 * structure declaration, we
766 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
769 * This should be true iff there were unbalanced parens in the
770 * stmt. It is a bit complicated, because the semicolon might
773 diag2(1, "Unbalanced parens");
775 if (sp_sw) { /* this is a check for an if, while, etc. with
776 * unbalanced parens */
778 parse(hd_type); /* dont lose the if, or whatever */
782 ps.want_blank = true;
783 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
784 * middle of a stmt */
786 if (!sp_sw) { /* if not if for (;;) */
787 parse(semicolon); /* let parser know about end of stmt */
788 force_nl = true;/* force newline after an end of stmt */
792 case lbrace: /* got a '{' */
793 ps.in_stmt = false; /* dont indent the {} */
795 force_nl = true;/* force other stuff on same line as '{' onto
797 else if (ps.block_init_level <= 0)
798 ps.block_init_level = 1;
800 ps.block_init_level++;
802 if (s_code != e_code && !ps.block_init) {
805 ps.want_blank = false;
807 else if (ps.in_parameter_declaration && !ps.in_or_st) {
809 if (function_brace_split) { /* dump the line prior to the
812 ps.want_blank = false;
813 } else /* add a space between the decl and brace */
814 ps.want_blank = true;
817 if (ps.in_parameter_declaration)
818 prefix_blankline_requested = 0;
820 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
822 diag2(1, "Unbalanced parens");
824 if (sp_sw) { /* check for unclosed if, for, etc. */
827 ps.ind_level = ps.i_l_follow;
830 if (s_code == e_code)
831 ps.ind_stmt = false; /* dont put extra indentation on line
833 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
834 * declaration or an init */
835 di_stack[ps.dec_nest++] = dec_ind;
839 ps.decl_on_line = false; /* we can't be in the middle of
840 * a declaration, so don't do
841 * special indentation of
843 if (blanklines_after_declarations_at_proctop
844 && ps.in_parameter_declaration)
845 postfix_blankline_requested = 1;
846 ps.in_parameter_declaration = 0;
850 parse(lbrace); /* let parser know about this */
851 if (ps.want_blank) /* put a blank before '{' if '{' is not at
854 ps.want_blank = false;
856 ps.just_saw_decl = 0;
859 case rbrace: /* got a '}' */
860 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
864 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
865 diag2(1, "Unbalanced parens");
869 ps.just_saw_decl = 0;
870 ps.block_init_level--;
871 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
874 diag2(0, "Line broken");
878 ps.want_blank = true;
879 ps.in_stmt = ps.ind_stmt = false;
880 if (ps.dec_nest > 0) { /* we are in multi-level structure
882 dec_ind = di_stack[--ps.dec_nest];
883 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
884 ps.just_saw_decl = 2;
887 prefix_blankline_requested = 0;
888 parse(rbrace); /* let parser know about this */
889 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
890 && ps.il[ps.tos] >= ps.ind_level;
891 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
892 postfix_blankline_requested = 1;
895 case swstmt: /* got keyword "switch" */
897 hd_type = swstmt; /* keep this for when we have seen the
899 goto copy_id; /* go move the token into buffer */
901 case sp_paren: /* token is if, while, for */
902 sp_sw = true; /* the interesting stuff is done after the
903 * expression is scanned */
904 hd_type = (*token == 'i' ? ifstmt :
905 (*token == 'w' ? whilestmt : forstmt));
908 * remember the type of header for later use by parser
910 goto copy_id; /* copy the token into line */
912 case sp_nparen: /* got else, do */
915 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
917 diag2(0, "Line broken");
918 dump_line();/* make sure this starts a line */
919 ps.want_blank = false;
921 force_nl = true;/* also, following stuff must go onto new line */
926 if (e_code != s_code) { /* make sure this starts a line */
928 diag2(0, "Line broken");
930 ps.want_blank = false;
932 force_nl = true;/* also, following stuff must go onto new line */
936 goto copy_id; /* move the token into line */
939 prefix_blankline_requested = 0;
942 case decl: /* we have a declaration type (int, etc.) */
943 parse(decl); /* let parser worry about indentation */
944 if (ps.last_token == rparen && ps.tos <= 1) {
945 if (s_code != e_code) {
950 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
951 ps.ind_level = ps.i_l_follow = 1;
954 ps.in_or_st = true; /* this might be a structure or initialization
956 ps.in_decl = ps.decl_on_line = true;
957 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
958 ps.just_saw_decl = 2;
959 prefix_blankline_requested = 0;
960 for (i = 0; token[i++];); /* get length of token */
962 if (ps.ind_level == 0 || ps.dec_nest > 0) {
963 /* global variable or struct member in local variable */
964 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
965 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
968 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
969 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
974 case ident: /* got an identifier or constant */
975 if (ps.in_decl) { /* if we are in a declaration, we must indent
977 if (type_code != funcname || !procnames_start_line) {
978 if (!ps.block_init && !ps.dumped_decl_indent) {
982 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
983 e_code += strlen(e_code);
985 indent_declaration(dec_ind, tabs_to_var);
986 ps.dumped_decl_indent = true;
987 ps.want_blank = false;
990 if (ps.want_blank && !(procnames_start_line &&
991 type_code == funcname))
993 ps.want_blank = false;
994 if (dec_ind && s_code != e_code) {
1001 else if (sp_sw && ps.p_l_follow == 0) {
1011 if (troff && ps.keyword) {
1012 e_code = chfont(&bodyf, &keywordf, e_code);
1013 for (t_ptr = token; *t_ptr; ++t_ptr) {
1015 *e_code++ = keywordf.allcaps && islower(*t_ptr)
1016 ? toupper(*t_ptr) : *t_ptr;
1018 e_code = chfont(&keywordf, &bodyf, e_code);
1021 for (t_ptr = token; *t_ptr; ++t_ptr) {
1025 if (type_code != funcname)
1026 ps.want_blank = true;
1032 for (t_ptr = token; *t_ptr; ++t_ptr) {
1036 ps.want_blank = false;
1039 case period: /* treat a period kind of like a binary
1041 *e_code++ = '.'; /* move the period into line */
1042 ps.want_blank = false; /* dont put a blank after a period */
1046 ps.want_blank = (s_code != e_code); /* only put blank after comma
1047 * if comma does not start the
1049 if (ps.in_decl && is_procname == 0 && !ps.block_init &&
1050 !ps.dumped_decl_indent) {
1051 /* indent leading commas and not the actual identifiers */
1052 indent_declaration(dec_ind - 1, tabs_to_var);
1053 ps.dumped_decl_indent = true;
1056 if (ps.p_l_follow == 0) {
1057 if (ps.block_init_level <= 0)
1059 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - tabsize))
1064 case preesc: /* got the character '#' */
1065 if ((s_com != e_com) ||
1069 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1076 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1078 if (buf_ptr >= buf_end)
1081 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1083 *e_lab = *buf_ptr++;
1084 if (buf_ptr >= buf_end)
1089 *e_lab++ = BACKSLASH;
1091 *e_lab++ = *buf_ptr++;
1092 if (buf_ptr >= buf_end)
1097 if (*buf_ptr == '*' && !in_comment && !quote) {
1099 *e_lab++ = *buf_ptr++;
1100 com_start = e_lab - s_lab - 2;
1112 if (*buf_ptr == '/' && in_comment) {
1114 *e_lab++ = *buf_ptr++;
1115 com_end = e_lab - s_lab;
1121 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1123 if (e_lab - s_lab == com_end && bp_save == NULL) {
1124 /* comment on preprocessor line */
1125 if (sc_end == NULL) /* if this is the first comment, we
1126 * must set up the buffer */
1127 sc_end = &(save_com[0]);
1129 *sc_end++ = '\n'; /* add newline between
1134 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1135 sc_end += com_end - com_start;
1136 if (sc_end >= &save_com[sc_size])
1138 e_lab = s_lab + com_start;
1139 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1141 bp_save = buf_ptr; /* save current input buffer */
1143 buf_ptr = save_com; /* fix so that subsequent calls to
1144 * lexi will take tokens out of
1146 *sc_end++ = ' '; /* add trailing blank, just in case */
1150 *e_lab = '\0'; /* null terminate line */
1154 if (strncmp(s_lab, "#if", 3) == 0) { /* also ifdef, ifndef */
1155 if ((size_t)ifdef_level < nitems(state_stack)) {
1156 match_state[ifdef_level].tos = -1;
1157 state_stack[ifdef_level++] = ps;
1160 diag2(1, "#if stack overflow");
1162 else if (strncmp(s_lab, "#el", 3) == 0) { /* else, elif */
1163 if (ifdef_level <= 0)
1164 diag2(1, s_lab[3] == 'i' ? "Unmatched #elif" : "Unmatched #else");
1166 match_state[ifdef_level - 1] = ps;
1167 ps = state_stack[ifdef_level - 1];
1170 else if (strncmp(s_lab, "#endif", 6) == 0) {
1171 if (ifdef_level <= 0)
1172 diag2(1, "Unmatched #endif");
1188 int d = nitems(recognized);
1190 if (strncmp(s_lab + 1, recognized[d].string, recognized[d].size) == 0)
1193 diag2(1, "Unrecognized cpp directive");
1197 if (blanklines_around_conditional_compilation) {
1198 postfix_blankline_requested++;
1199 n_real_blanklines = 0;
1202 postfix_blankline_requested = 0;
1203 prefix_blankline_requested = 0;
1205 break; /* subsequent processing of the newline
1206 * character will cause the line to be printed */
1208 case comment: /* we have gotten a / followed by * this is a biggie */
1209 if (flushed_nl) { /* we should force a broken line here */
1211 ps.want_blank = false; /* dont insert blank at line start */
1216 } /* end of big switch stmt */
1218 *e_code = '\0'; /* make sure code section is null terminated */
1219 if (type_code != comment && type_code != newline && type_code != preesc)
1220 ps.last_token = type_code;
1221 } /* end of main while (1) loop */
1225 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1226 * backup file will be ".Bfile" then make the backup file the input and
1227 * original input file the output
1234 char buff[8 * 1024];
1237 /* construct file name .Bfile */
1238 for (p = in_name; *p; p++); /* skip to end of string */
1239 while (p > in_name && *p != '/') /* find last '/' */
1243 sprintf(bakfile, "%s%s", p, simple_backup_suffix);
1245 /* copy in_name to backup file */
1246 bakchn = creat(bakfile, 0600);
1248 err(1, "%s", bakfile);
1249 while ((n = read(fileno(input), buff, sizeof(buff))) > 0)
1250 if (write(bakchn, buff, n) != n)
1251 err(1, "%s", bakfile);
1253 err(1, "%s", in_name);
1257 /* re-open backup file as the input file */
1258 input = fopen(bakfile, "r");
1260 err(1, "%s", bakfile);
1261 /* now the original input file will be the output */
1262 output = fopen(in_name, "w");
1263 if (output == NULL) {
1265 err(1, "%s", in_name);
1270 indent_declaration(int cur_dec_ind, int tabs_to_var)
1272 int pos = e_code - s_code;
1273 char *startpos = e_code;
1276 * get the tab math right for indentations that are not multiples of tabsize
1278 if ((ps.ind_level * ps.ind_size) % tabsize != 0) {
1279 pos += (ps.ind_level * ps.ind_size) % tabsize;
1280 cur_dec_ind += (ps.ind_level * ps.ind_size) % tabsize;
1285 while ((tpos = tabsize * (1 + pos / tabsize)) <= cur_dec_ind) {
1291 while (pos < cur_dec_ind) {
1296 if (e_code == startpos && ps.want_blank) {
1298 ps.want_blank = false;