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/capsicum.h>
54 #include <sys/param.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 *envval = NULL;
105 /*-----------------------------------------------*\
107 \*-----------------------------------------------*/
111 ps.p_stack[0] = stmt; /* this is the parser's stack */
112 ps.last_nl = true; /* this is true if the last thing scanned was
114 ps.last_token = semicolon;
115 combuf = (char *) malloc(bufsize);
118 labbuf = (char *) malloc(bufsize);
121 codebuf = (char *) malloc(bufsize);
124 tokenbuf = (char *) malloc(bufsize);
125 if (tokenbuf == NULL)
127 l_com = combuf + bufsize - 5;
128 l_lab = labbuf + bufsize - 5;
129 l_code = codebuf + bufsize - 5;
130 l_token = tokenbuf + bufsize - 5;
131 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
133 combuf[1] = codebuf[1] = labbuf[1] = '\0';
134 ps.else_if = 1; /* Default else-if special processing to on */
135 s_lab = e_lab = labbuf + 1;
136 s_code = e_code = codebuf + 1;
137 s_com = e_com = combuf + 1;
138 s_token = e_token = tokenbuf + 1;
140 in_buffer = (char *) malloc(10);
141 if (in_buffer == NULL)
143 in_buffer_limit = in_buffer + 8;
144 buf_ptr = buf_end = in_buffer;
146 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
147 sp_sw = force_nl = false;
151 di_stack[ps.dec_nest = 0] = 0;
152 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
154 scase = ps.pcase = false;
163 envval = getenv("SIMPLE_BACKUP_SUFFIX");
165 simple_backup_suffix = envval;
167 /*--------------------------------------------------*\
168 | COMMAND LINE SCAN |
169 \*--------------------------------------------------*/
172 max_col = 78; /* -l78 */
173 lineup_to_parens = 1; /* -lp */
174 ps.ljust_decl = 0; /* -ndj */
175 ps.com_ind = 33; /* -c33 */
176 star_comment_cont = 1; /* -sc */
177 ps.ind_size = 8; /* -i8 */
179 ps.decl_indent = 16; /* -di16 */
180 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
181 * by an arg, we will set this equal to
183 ps.indent_parameters = 1; /* -ip */
184 ps.decl_com_ind = 0; /* if this is not set to some positive value
185 * by an arg, we will set this equal to
187 btype_2 = 1; /* -br */
188 cuddle_else = 1; /* -ce */
189 ps.unindent_displace = 0; /* -d0 */
190 ps.case_indent = 0; /* -cli0 */
191 format_block_comments = 1; /* -fcb */
192 format_col1_comments = 1; /* -fc1 */
193 procnames_start_line = 1; /* -psl */
194 proc_calls_space = 0; /* -npcs */
195 comment_delimiter_on_blankline = 1; /* -cdb */
196 ps.leave_comma = 1; /* -nbc */
199 for (i = 1; i < argc; ++i)
200 if (strcmp(argv[i], "-npro") == 0)
206 for (i = 1; i < argc; ++i) {
209 * look thru args (if any) for changes to defaults
211 if (argv[i][0] != '-') {/* no flag on parameter */
212 if (input == NULL) { /* we must have the input file */
213 in_name = argv[i]; /* remember name of input file */
214 input = fopen(in_name, "r");
215 if (input == NULL) /* check for open error */
216 err(1, "%s", in_name);
219 else if (output == NULL) { /* we have the output file */
220 out_name = argv[i]; /* remember name of output file */
221 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
223 errx(1, "input and output files must be different");
225 output = fopen(out_name, "w");
226 if (output == NULL) /* check for create error */
227 err(1, "%s", out_name);
230 errx(1, "unknown parameter: %s", argv[i]);
237 if (output == NULL) {
238 if (troff || input == stdin)
246 /* Restrict input/output descriptors and enter Capsicum sandbox. */
247 cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE);
248 if (cap_rights_limit(fileno(output), &rights) < 0 && errno != ENOSYS)
249 err(EXIT_FAILURE, "unable to limit rights for %s", out_name);
250 cap_rights_init(&rights, CAP_FSTAT, CAP_READ);
251 if (cap_rights_limit(fileno(input), &rights) < 0 && errno != ENOSYS)
252 err(EXIT_FAILURE, "unable to limit rights for %s", in_name);
253 if (cap_enter() < 0 && errno != ENOSYS)
254 err(EXIT_FAILURE, "unable to enter capability mode");
257 ps.com_ind = 2; /* dont put normal comments before column 2 */
259 if (bodyf.font[0] == 0)
260 parsefont(&bodyf, "R");
261 if (scomf.font[0] == 0)
262 parsefont(&scomf, "I");
263 if (blkcomf.font[0] == 0)
264 blkcomf = scomf, blkcomf.size += 2;
265 if (boxcomf.font[0] == 0)
267 if (stringf.font[0] == 0)
268 parsefont(&stringf, "L");
269 if (keywordf.font[0] == 0)
270 parsefont(&keywordf, "B");
271 writefdef(&bodyf, 'B');
272 writefdef(&scomf, 'C');
273 writefdef(&blkcomf, 'L');
274 writefdef(&boxcomf, 'X');
275 writefdef(&stringf, 'S');
276 writefdef(&keywordf, 'K');
278 if (block_comment_max_col <= 0)
279 block_comment_max_col = max_col;
280 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
281 ps.local_decl_indent = ps.decl_indent;
282 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
283 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
284 if (continuation_indent == 0)
285 continuation_indent = ps.ind_size;
286 fill_buffer(); /* get first batch of stuff into input buffer */
297 col = ((col - 1) & ~7) + 9;
302 if (col > ps.ind_size)
303 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
306 const char *p = in_name,
312 fprintf(output, ".Fn \"%s\"\n", beg);
318 while (1) { /* this is the main loop. it will go until we
322 type_code = lexi(); /* lexi reads one token. The actual
323 * characters read are stored in "token". lexi
324 * returns a code indicating the type of token */
325 is_procname = ps.procname[0];
328 * The following code moves everything following an if (), while (),
329 * else, etc. up to the start of the following stmt to a buffer. This
330 * allows proper handling of both kinds of brace placement.
334 while (ps.search_brace) { /* if we scanned an if(), while(),
335 * etc., we might need to copy stuff
336 * into a buffer we must loop, copying
337 * stuff into save_com, until we find
338 * the start of the stmt which follows
339 * the if, or whatever */
343 if (sc_end != NULL) { /* dump comment, if any */
344 *sc_end++ = '\n'; /* newlines are needed in this case */
349 break; /* form feeds and newlines found here will be
352 case lbrace: /* this is a brace that starts the compound
354 if (sc_end == NULL) { /* ignore buffering if a comment wasn't
356 ps.search_brace = false;
360 save_com[0] = '{'; /* we either want to put the brace
361 * right after the if */
362 goto sw_buffer; /* go to common code to get out of
365 case comment: /* we have a comment, so we must copy it into
367 if (!flushed_nl || sc_end != NULL) {
368 if (sc_end == NULL) { /* if this is the first comment, we
369 * must set up the buffer */
370 save_com[0] = save_com[1] = ' ';
371 sc_end = &(save_com[2]);
374 *sc_end++ = '\n'; /* add newline between
379 *sc_end++ = '/'; /* copy in start of comment */
382 for (;;) { /* loop until we get to the end of the comment */
383 *sc_end = *buf_ptr++;
384 if (buf_ptr >= buf_end)
387 if (*sc_end++ == '*' && *buf_ptr == '/')
388 break; /* we are at end of comment */
390 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
392 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
397 *sc_end++ = '/'; /* add ending slash */
398 if (++buf_ptr >= buf_end) /* get past / in buffer */
402 default: /* it is the start of a normal statement */
403 if (flushed_nl) /* if we flushed a newline, make sure it is
406 if ((type_code == sp_paren && *token == 'i'
407 && last_else && ps.else_if)
408 || (type_code == sp_nparen && *token == 'e'
409 && e_code != s_code && e_code[-1] == '}'))
412 if (sc_end == NULL) { /* ignore buffering if comment wasn't
414 ps.search_brace = false;
417 if (force_nl) { /* if we should insert a nl here, put it into
420 --line_no; /* this will be re-increased when the nl is
421 * read from the buffer */
424 if (verbose && !flushed_nl) /* print error msg if the line
425 * was not already broken */
426 diag2(0, "Line broken");
429 for (t_ptr = token; *t_ptr; ++t_ptr)
430 *sc_end++ = *t_ptr; /* copy token into temp buffer */
434 ps.search_brace = false; /* stop looking for start of
436 bp_save = buf_ptr; /* save current input buffer */
438 buf_ptr = save_com; /* fix so that subsequent calls to
439 * lexi will take tokens out of
441 *sc_end++ = ' ';/* add trailing blank, just in case */
445 } /* end of switch */
446 if (type_code != 0) /* we must make this check, just in case there
447 * was an unexpected EOF */
448 type_code = lexi(); /* read another token */
449 /* if (ps.search_brace) ps.procname[0] = 0; */
450 if ((is_procname = ps.procname[0]) && flushed_nl
451 && !procnames_start_line && ps.in_decl
452 && type_code == ident)
454 } /* end of while (search_brace) */
457 if (type_code == 0) { /* we got eof */
458 if (s_lab != e_lab || s_code != e_code
459 || s_com != e_com) /* must dump end of line */
461 if (ps.tos > 1) /* check for balanced braces */
462 diag2(1, "Stuff missing from end of file");
465 printf("There were %d output lines and %d comments\n",
466 ps.out_lines, ps.out_coms);
467 printf("(Lines with comments)/(Lines with code): %6.3f\n",
468 (1.0 * ps.com_lines) / code_lines);
474 (type_code != comment) &&
475 (type_code != newline) &&
476 (type_code != preesc) &&
477 (type_code != form_feed)) {
479 (type_code != semicolon) &&
480 (type_code != lbrace || !btype_2)) {
481 /* we should force a broken line here */
482 if (verbose && !flushed_nl)
483 diag2(0, "Line broken");
486 ps.want_blank = false; /* dont insert blank at line start */
489 ps.in_stmt = true; /* turn on flag which causes an extra level of
490 * indentation. this is turned off by a ; or
492 if (s_com != e_com) { /* the turkey has embedded a comment
493 * in a line. fix it */
495 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
500 *e_code = '\0'; /* null terminate code sect */
501 ps.want_blank = false;
505 else if (type_code != comment) /* preserve force_nl thru a comment */
506 force_nl = false; /* cancel forced newline after newline, form
511 /*-----------------------------------------------------*\
512 | do switch on type of token scanned |
513 \*-----------------------------------------------------*/
515 switch (type_code) { /* now, decide what to do with the token */
517 case form_feed: /* found a form feed in line */
518 ps.use_ff = true; /* a form feed is treated much like a newline */
520 ps.want_blank = false;
524 if (ps.last_token != comma || ps.p_l_follow > 0
525 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
527 ps.want_blank = false;
529 ++line_no; /* keep track of input line number */
532 case lparen: /* got a '(' or '[' */
533 /* count parens to make Healy happy */
534 if (++ps.p_l_follow == nitems(ps.paren_indents)) {
535 diag3(0, "Reached internal limit of %d unclosed parens",
536 nitems(ps.paren_indents));
539 if (ps.want_blank && *token != '[' &&
540 (ps.last_token != ident || proc_calls_space ||
541 /* offsetof (1) is never allowed a space; sizeof (2) gets
542 * one iff -bs; all other keywords (>2) always get a space
544 (ps.keyword + Bill_Shannon > 2)))
546 ps.want_blank = false;
547 if (ps.in_decl && !ps.block_init && !ps.dumped_decl_indent &&
549 /* function pointer declarations */
551 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
552 e_code += strlen(e_code);
555 indent_declaration(dec_ind, tabs_to_var);
557 ps.dumped_decl_indent = true;
560 *e_code++ = token[0];
561 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
562 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
563 && ps.paren_indents[0] < 2 * ps.ind_size)
564 ps.paren_indents[0] = 2 * ps.ind_size;
565 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
567 * this is a kluge to make sure that declarations will be
568 * aligned right if proc decl has an explicit type on it, i.e.
571 parse(semicolon); /* I said this was a kluge... */
572 ps.in_or_st = false; /* turn off flag for structure decl or
575 /* parenthesized type following sizeof or offsetof is not a cast */
576 if (ps.keyword == 1 || ps.keyword == 2)
577 ps.not_cast_mask |= 1 << ps.p_l_follow;
580 case rparen: /* got a ')' or ']' */
582 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.not_cast_mask) {
584 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
585 ps.want_blank = false;
587 ps.want_blank = true;
588 ps.not_cast_mask &= (1 << ps.p_l_follow) - 1;
589 if (--ps.p_l_follow < 0) {
591 diag3(0, "Extra %c", *token);
593 if (e_code == s_code) /* if the paren starts the line */
594 ps.paren_level = ps.p_l_follow; /* then indent it */
596 *e_code++ = token[0];
598 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
599 * (...), or some such */
601 force_nl = true;/* must force newline after if */
602 ps.last_u_d = true; /* inform lexi that a following
603 * operator is unary */
604 ps.in_stmt = false; /* dont use stmt continuation
607 parse(hd_type); /* let parser worry about if, or whatever */
609 ps.search_brace = btype_2; /* this should insure that constructs
610 * such as main(){...} and int[]{...}
611 * have their braces put in the right
615 case unary_op: /* this could be any unary operation */
616 if (!ps.dumped_decl_indent && ps.in_decl && !is_procname &&
618 /* pointer declarations */
622 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7,
624 e_code += strlen(e_code);
627 /* if this is a unary op in a declaration, we should
628 * indent this token */
629 for (i = 0; token[i]; ++i)
630 /* find length of token */;
631 indent_declaration(dec_ind - i, tabs_to_var);
633 ps.dumped_decl_indent = true;
635 else if (ps.want_blank)
638 const char *res = token;
640 if (troff && token[0] == '-' && token[1] == '>')
642 for (t_ptr = res; *t_ptr; ++t_ptr) {
647 ps.want_blank = false;
650 case binary_op: /* any binary operation */
654 const char *res = token;
673 else if (token[1] == 0)
677 for (t_ptr = res; *t_ptr; ++t_ptr) {
679 *e_code++ = *t_ptr; /* move the operator */
682 ps.want_blank = true;
685 case postop: /* got a trailing ++ or -- */
686 *e_code++ = token[0];
687 *e_code++ = token[1];
688 ps.want_blank = true;
691 case question: /* got a ? */
692 squest++; /* this will be used when a later colon
693 * appears so we can distinguish the
694 * <c>?<n>:<n> construct */
698 ps.want_blank = true;
701 case casestmt: /* got word 'case' or 'default' */
702 scase = true; /* so we can process the later colon properly */
705 case colon: /* got a ':' */
706 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
711 ps.want_blank = true;
716 ps.want_blank = false;
719 ps.in_stmt = false; /* seeing a label does not imply we are in a
721 for (t_ptr = s_code; *t_ptr; ++t_ptr)
722 *e_lab++ = *t_ptr; /* turn everything so far into a label */
728 force_nl = ps.pcase = scase; /* ps.pcase will be used by
729 * dump_line to decide how to
730 * indent the label. force_nl
731 * will force a case n: to be
732 * on a line by itself */
734 ps.want_blank = false;
737 case semicolon: /* got a ';' */
738 if (ps.dec_nest == 0)
739 ps.in_or_st = false;/* we are not in an initialization or
740 * structure declaration */
741 scase = false; /* these will only need resetting in an error */
743 if (ps.last_token == rparen && rparen_count == 0)
744 ps.in_parameter_declaration = 0;
746 ps.not_cast_mask = 0;
748 ps.block_init_level = 0;
751 if (ps.in_decl && s_code == e_code && !ps.block_init &&
752 !ps.dumped_decl_indent) {
753 /* indent stray semicolons in declarations */
754 indent_declaration(dec_ind - 1, tabs_to_var);
755 ps.dumped_decl_indent = true;
758 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
759 * structure declaration, we
762 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
765 * This should be true iff there were unbalanced parens in the
766 * stmt. It is a bit complicated, because the semicolon might
769 diag2(1, "Unbalanced parens");
771 if (sp_sw) { /* this is a check for an if, while, etc. with
772 * unbalanced parens */
774 parse(hd_type); /* dont lose the if, or whatever */
778 ps.want_blank = true;
779 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
780 * middle of a stmt */
782 if (!sp_sw) { /* if not if for (;;) */
783 parse(semicolon); /* let parser know about end of stmt */
784 force_nl = true;/* force newline after an end of stmt */
788 case lbrace: /* got a '{' */
789 ps.in_stmt = false; /* dont indent the {} */
791 force_nl = true;/* force other stuff on same line as '{' onto
793 else if (ps.block_init_level <= 0)
794 ps.block_init_level = 1;
796 ps.block_init_level++;
798 if (s_code != e_code && !ps.block_init) {
801 ps.want_blank = false;
803 else if (ps.in_parameter_declaration && !ps.in_or_st) {
805 if (function_brace_split) { /* dump the line prior to the
808 ps.want_blank = false;
809 } else /* add a space between the decl and brace */
810 ps.want_blank = true;
813 if (ps.in_parameter_declaration)
814 prefix_blankline_requested = 0;
816 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
818 diag2(1, "Unbalanced parens");
820 if (sp_sw) { /* check for unclosed if, for, etc. */
823 ps.ind_level = ps.i_l_follow;
826 if (s_code == e_code)
827 ps.ind_stmt = false; /* dont put extra indentation on line
829 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
830 * declaration or an init */
831 di_stack[ps.dec_nest++] = dec_ind;
835 ps.decl_on_line = false; /* we can't be in the middle of
836 * a declaration, so don't do
837 * special indentation of
839 if (blanklines_after_declarations_at_proctop
840 && ps.in_parameter_declaration)
841 postfix_blankline_requested = 1;
842 ps.in_parameter_declaration = 0;
845 parse(lbrace); /* let parser know about this */
846 if (ps.want_blank) /* put a blank before '{' if '{' is not at
849 ps.want_blank = false;
851 ps.just_saw_decl = 0;
854 case rbrace: /* got a '}' */
855 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
859 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
860 diag2(1, "Unbalanced parens");
864 ps.just_saw_decl = 0;
865 ps.block_init_level--;
866 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
869 diag2(0, "Line broken");
873 ps.want_blank = true;
874 ps.in_stmt = ps.ind_stmt = false;
875 if (ps.dec_nest > 0) { /* we are in multi-level structure
877 dec_ind = di_stack[--ps.dec_nest];
878 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
879 ps.just_saw_decl = 2;
882 prefix_blankline_requested = 0;
883 parse(rbrace); /* let parser know about this */
884 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
885 && ps.il[ps.tos] >= ps.ind_level;
886 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
887 postfix_blankline_requested = 1;
890 case swstmt: /* got keyword "switch" */
892 hd_type = swstmt; /* keep this for when we have seen the
894 goto copy_id; /* go move the token into buffer */
896 case sp_paren: /* token is if, while, for */
897 sp_sw = true; /* the interesting stuff is done after the
898 * expression is scanned */
899 hd_type = (*token == 'i' ? ifstmt :
900 (*token == 'w' ? whilestmt : forstmt));
903 * remember the type of header for later use by parser
905 goto copy_id; /* copy the token into line */
907 case sp_nparen: /* got else, do */
910 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
912 diag2(0, "Line broken");
913 dump_line();/* make sure this starts a line */
914 ps.want_blank = false;
916 force_nl = true;/* also, following stuff must go onto new line */
921 if (e_code != s_code) { /* make sure this starts a line */
923 diag2(0, "Line broken");
925 ps.want_blank = false;
927 force_nl = true;/* also, following stuff must go onto new line */
931 goto copy_id; /* move the token into line */
933 case decl: /* we have a declaration type (int, register,
935 parse(decl); /* let parser worry about indentation */
936 if (ps.last_token == rparen && ps.tos <= 1) {
937 ps.in_parameter_declaration = 1;
938 if (s_code != e_code) {
943 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
944 ps.ind_level = ps.i_l_follow = 1;
947 ps.in_or_st = true; /* this might be a structure or initialization
949 ps.in_decl = ps.decl_on_line = true;
950 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
951 ps.just_saw_decl = 2;
952 prefix_blankline_requested = 0;
953 for (i = 0; token[i++];); /* get length of token */
955 if (ps.ind_level == 0 || ps.dec_nest > 0) {
956 /* global variable or struct member in local variable */
957 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
958 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
961 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
962 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
966 case ident: /* got an identifier or constant */
967 if (ps.in_decl) { /* if we are in a declaration, we must indent
969 if (is_procname == 0 || !procnames_start_line) {
970 if (!ps.block_init && !ps.dumped_decl_indent) {
974 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
975 e_code += strlen(e_code);
977 indent_declaration(dec_ind, tabs_to_var);
978 ps.dumped_decl_indent = true;
979 ps.want_blank = false;
984 ps.want_blank = false;
985 if (dec_ind && s_code != e_code) {
992 else if (sp_sw && ps.p_l_follow == 0) {
1002 if (troff && ps.keyword) {
1003 e_code = chfont(&bodyf, &keywordf, e_code);
1004 for (t_ptr = token; *t_ptr; ++t_ptr) {
1006 *e_code++ = keywordf.allcaps && islower(*t_ptr)
1007 ? toupper(*t_ptr) : *t_ptr;
1009 e_code = chfont(&keywordf, &bodyf, e_code);
1012 for (t_ptr = token; *t_ptr; ++t_ptr) {
1016 ps.want_blank = true;
1022 for (t_ptr = token; *t_ptr; ++t_ptr) {
1026 ps.want_blank = false;
1029 case period: /* treat a period kind of like a binary
1031 *e_code++ = '.'; /* move the period into line */
1032 ps.want_blank = false; /* dont put a blank after a period */
1036 ps.want_blank = (s_code != e_code); /* only put blank after comma
1037 * if comma does not start the
1039 if (ps.in_decl && is_procname == 0 && !ps.block_init &&
1040 !ps.dumped_decl_indent) {
1041 /* indent leading commas and not the actual identifiers */
1042 indent_declaration(dec_ind - 1, tabs_to_var);
1043 ps.dumped_decl_indent = true;
1046 if (ps.p_l_follow == 0) {
1047 if (ps.block_init_level <= 0)
1049 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1054 case preesc: /* got the character '#' */
1055 if ((s_com != e_com) ||
1059 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1066 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1068 if (buf_ptr >= buf_end)
1071 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1073 *e_lab = *buf_ptr++;
1074 if (buf_ptr >= buf_end)
1079 *e_lab++ = BACKSLASH;
1081 *e_lab++ = *buf_ptr++;
1082 if (buf_ptr >= buf_end)
1087 if (*buf_ptr == '*' && !in_comment && !quote) {
1089 *e_lab++ = *buf_ptr++;
1090 com_start = e_lab - s_lab - 2;
1102 if (*buf_ptr == '/' && in_comment) {
1104 *e_lab++ = *buf_ptr++;
1105 com_end = e_lab - s_lab;
1111 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1113 if (e_lab - s_lab == com_end && bp_save == NULL) {
1114 /* comment on preprocessor line */
1115 if (sc_end == NULL) /* if this is the first comment, we
1116 * must set up the buffer */
1117 sc_end = &(save_com[0]);
1119 *sc_end++ = '\n'; /* add newline between
1124 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1125 sc_end += com_end - com_start;
1126 if (sc_end >= &save_com[sc_size])
1128 e_lab = s_lab + com_start;
1129 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1131 bp_save = buf_ptr; /* save current input buffer */
1133 buf_ptr = save_com; /* fix so that subsequent calls to
1134 * lexi will take tokens out of
1136 *sc_end++ = ' '; /* add trailing blank, just in case */
1140 *e_lab = '\0'; /* null terminate line */
1144 if (strncmp(s_lab, "#if", 3) == 0) { /* also ifdef, ifndef */
1145 if ((size_t)ifdef_level < nitems(state_stack)) {
1146 match_state[ifdef_level].tos = -1;
1147 state_stack[ifdef_level++] = ps;
1150 diag2(1, "#if stack overflow");
1152 else if (strncmp(s_lab, "#el", 3) == 0) { /* else, elif */
1153 if (ifdef_level <= 0)
1154 diag2(1, s_lab[3] == 'i' ? "Unmatched #elif" : "Unmatched #else");
1156 match_state[ifdef_level - 1] = ps;
1157 ps = state_stack[ifdef_level - 1];
1160 else if (strncmp(s_lab, "#endif", 6) == 0) {
1161 if (ifdef_level <= 0)
1162 diag2(1, "Unmatched #endif");
1178 int d = nitems(recognized);
1180 if (strncmp(s_lab + 1, recognized[d].string, recognized[d].size) == 0)
1183 diag2(1, "Unrecognized cpp directive");
1187 if (blanklines_around_conditional_compilation) {
1188 postfix_blankline_requested++;
1189 n_real_blanklines = 0;
1192 postfix_blankline_requested = 0;
1193 prefix_blankline_requested = 0;
1195 break; /* subsequent processing of the newline
1196 * character will cause the line to be printed */
1198 case comment: /* we have gotten a / followed by * this is a biggie */
1199 if (flushed_nl) { /* we should force a broken line here */
1201 ps.want_blank = false; /* dont insert blank at line start */
1206 } /* end of big switch stmt */
1208 *e_code = '\0'; /* make sure code section is null terminated */
1209 if (type_code != comment && type_code != newline && type_code != preesc)
1210 ps.last_token = type_code;
1211 } /* end of main while (1) loop */
1215 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1216 * backup file will be ".Bfile" then make the backup file the input and
1217 * original input file the output
1224 char buff[8 * 1024];
1227 /* construct file name .Bfile */
1228 for (p = in_name; *p; p++); /* skip to end of string */
1229 while (p > in_name && *p != '/') /* find last '/' */
1233 sprintf(bakfile, "%s%s", p, simple_backup_suffix);
1235 /* copy in_name to backup file */
1236 bakchn = creat(bakfile, 0600);
1238 err(1, "%s", bakfile);
1239 while ((n = read(fileno(input), buff, sizeof(buff))) > 0)
1240 if (write(bakchn, buff, n) != n)
1241 err(1, "%s", bakfile);
1243 err(1, "%s", in_name);
1247 /* re-open backup file as the input file */
1248 input = fopen(bakfile, "r");
1250 err(1, "%s", bakfile);
1251 /* now the original input file will be the output */
1252 output = fopen(in_name, "w");
1253 if (output == NULL) {
1255 err(1, "%s", in_name);
1260 indent_declaration(int cur_dec_ind, int tabs_to_var)
1262 int pos = e_code - s_code;
1263 char *startpos = e_code;
1266 * get the tab math right for indentations that are not multiples of 8
1268 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
1269 pos += (ps.ind_level * ps.ind_size) % 8;
1270 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
1273 while ((pos & ~7) + 8 <= cur_dec_ind) {
1276 pos = (pos & ~7) + 8;
1278 while (pos < cur_dec_ind) {
1283 if (e_code == startpos && ps.want_blank) {
1285 ps.want_blank = false;