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);
66 static void indent_declaration(int, int);
68 const char *in_name = "Standard Input"; /* will always point to name of input
70 const char *out_name = "Standard Output"; /* will always point to name
72 char bakfile[MAXPATHLEN] = "";
75 main(int argc, char **argv)
78 int dec_ind; /* current indentation for declarations */
79 int di_stack[20]; /* a stack of structure indentation levels */
80 int flushed_nl; /* used when buffering up comments to remember
81 * that a newline was passed over */
82 int force_nl; /* when true, code must be broken */
83 int hd_type = 0; /* used to store type of stmt for if (...),
85 int i; /* local loop counter */
86 int scase; /* set to true when we see a case, so we will
87 * know what to do with the following colon */
88 int sp_sw; /* when true, we are in the expression of
89 * if(...), while(...), etc. */
90 int squest; /* when this is positive, we have seen a ?
91 * without the matching : in a <c>?<s>:<s>
93 const char *t_ptr; /* used for copying tokens */
94 int tabs_to_var; /* true if using tabs to indent to var name */
95 int type_code; /* the type of token, returned by lexi */
97 int last_else = 0; /* true iff last keyword was an else */
100 /*-----------------------------------------------*\
102 \*-----------------------------------------------*/
106 ps.p_stack[0] = stmt; /* this is the parser's stack */
107 ps.last_nl = true; /* this is true if the last thing scanned was
109 ps.last_token = semicolon;
110 combuf = (char *) malloc(bufsize);
113 labbuf = (char *) malloc(bufsize);
116 codebuf = (char *) malloc(bufsize);
119 tokenbuf = (char *) malloc(bufsize);
120 if (tokenbuf == NULL)
123 l_com = combuf + bufsize - 5;
124 l_lab = labbuf + bufsize - 5;
125 l_code = codebuf + bufsize - 5;
126 l_token = tokenbuf + bufsize - 5;
127 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
129 combuf[1] = codebuf[1] = labbuf[1] = '\0';
130 ps.else_if = 1; /* Default else-if special processing to on */
131 s_lab = e_lab = labbuf + 1;
132 s_code = e_code = codebuf + 1;
133 s_com = e_com = combuf + 1;
134 s_token = e_token = tokenbuf + 1;
136 in_buffer = (char *) malloc(10);
137 if (in_buffer == NULL)
139 in_buffer_limit = in_buffer + 8;
140 buf_ptr = buf_end = in_buffer;
142 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
143 sp_sw = force_nl = false;
147 di_stack[ps.dec_nest = 0] = 0;
148 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
150 scase = ps.pcase = false;
159 /*--------------------------------------------------*\
160 | COMMAND LINE SCAN |
161 \*--------------------------------------------------*/
164 max_col = 78; /* -l78 */
165 lineup_to_parens = 1; /* -lp */
166 ps.ljust_decl = 0; /* -ndj */
167 ps.com_ind = 33; /* -c33 */
168 star_comment_cont = 1; /* -sc */
169 ps.ind_size = 8; /* -i8 */
171 ps.decl_indent = 16; /* -di16 */
172 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
173 * by an arg, we will set this equal to
175 ps.indent_parameters = 1; /* -ip */
176 ps.decl_com_ind = 0; /* if this is not set to some positive value
177 * by an arg, we will set this equal to
179 btype_2 = 1; /* -br */
180 cuddle_else = 1; /* -ce */
181 ps.unindent_displace = 0; /* -d0 */
182 ps.case_indent = 0; /* -cli0 */
183 format_block_comments = 1; /* -fcb */
184 format_col1_comments = 1; /* -fc1 */
185 procnames_start_line = 1; /* -psl */
186 proc_calls_space = 0; /* -npcs */
187 comment_delimiter_on_blankline = 1; /* -cdb */
188 ps.leave_comma = 1; /* -nbc */
191 for (i = 1; i < argc; ++i)
192 if (strcmp(argv[i], "-npro") == 0)
198 for (i = 1; i < argc; ++i) {
201 * look thru args (if any) for changes to defaults
203 if (argv[i][0] != '-') {/* no flag on parameter */
204 if (input == NULL) { /* we must have the input file */
205 in_name = argv[i]; /* remember name of input file */
206 input = fopen(in_name, "r");
207 if (input == NULL) /* check for open error */
208 err(1, "%s", in_name);
211 else if (output == NULL) { /* we have the output file */
212 out_name = argv[i]; /* remember name of output file */
213 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
215 errx(1, "input and output files must be different");
217 output = fopen(out_name, "w");
218 if (output == NULL) /* check for create error */
219 err(1, "%s", out_name);
222 errx(1, "unknown parameter: %s", argv[i]);
229 if (output == NULL) {
230 if (troff || input == stdin)
238 ps.com_ind = 2; /* dont put normal comments before column 2 */
240 if (bodyf.font[0] == 0)
241 parsefont(&bodyf, "R");
242 if (scomf.font[0] == 0)
243 parsefont(&scomf, "I");
244 if (blkcomf.font[0] == 0)
245 blkcomf = scomf, blkcomf.size += 2;
246 if (boxcomf.font[0] == 0)
248 if (stringf.font[0] == 0)
249 parsefont(&stringf, "L");
250 if (keywordf.font[0] == 0)
251 parsefont(&keywordf, "B");
252 writefdef(&bodyf, 'B');
253 writefdef(&scomf, 'C');
254 writefdef(&blkcomf, 'L');
255 writefdef(&boxcomf, 'X');
256 writefdef(&stringf, 'S');
257 writefdef(&keywordf, 'K');
259 if (block_comment_max_col <= 0)
260 block_comment_max_col = max_col;
261 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
262 ps.local_decl_indent = ps.decl_indent;
263 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
264 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
265 if (continuation_indent == 0)
266 continuation_indent = ps.ind_size;
267 fill_buffer(); /* get first batch of stuff into input buffer */
278 col = ((col - 1) & ~7) + 9;
283 if (col > ps.ind_size)
284 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
287 const char *p = in_name,
293 fprintf(output, ".Fn \"%s\"\n", beg);
299 while (1) { /* this is the main loop. it will go until we
303 type_code = lexi(); /* lexi reads one token. The actual
304 * characters read are stored in "token". lexi
305 * returns a code indicating the type of token */
306 is_procname = ps.procname[0];
309 * The following code moves everything following an if (), while (),
310 * else, etc. up to the start of the following stmt to a buffer. This
311 * allows proper handling of both kinds of brace placement.
315 while (ps.search_brace) { /* if we scanned an if(), while(),
316 * etc., we might need to copy stuff
317 * into a buffer we must loop, copying
318 * stuff into save_com, until we find
319 * the start of the stmt which follows
320 * the if, or whatever */
325 goto sw_buffer; /* dump comment, if any */
328 break; /* form feeds and newlines found here will be
331 case lbrace: /* this is a brace that starts the compound
333 if (sc_end == NULL) { /* ignore buffering if a comment wasn't
335 ps.search_brace = false;
339 save_com[0] = '{'; /* we either want to put the brace
340 * right after the if */
341 goto sw_buffer; /* go to common code to get out of
344 case comment: /* we have a comment, so we must copy it into
346 if (!flushed_nl || sc_end != NULL) {
347 if (sc_end == NULL) { /* if this is the first comment, we
348 * must set up the buffer */
349 save_com[0] = save_com[1] = ' ';
350 sc_end = &(save_com[2]);
353 *sc_end++ = '\n'; /* add newline between
358 *sc_end++ = '/'; /* copy in start of comment */
361 for (;;) { /* loop until we get to the end of the comment */
362 *sc_end = *buf_ptr++;
363 if (buf_ptr >= buf_end)
366 if (*sc_end++ == '*' && *buf_ptr == '/')
367 break; /* we are at end of comment */
369 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
371 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
376 *sc_end++ = '/'; /* add ending slash */
377 if (++buf_ptr >= buf_end) /* get past / in buffer */
381 default: /* it is the start of a normal statement */
382 if (flushed_nl) /* if we flushed a newline, make sure it is
385 if ((type_code == sp_paren && *token == 'i'
386 && last_else && ps.else_if)
387 || (type_code == sp_nparen && *token == 'e'
388 && e_code != s_code && e_code[-1] == '}'))
391 if (sc_end == NULL) { /* ignore buffering if comment wasn't
393 ps.search_brace = false;
396 if (force_nl) { /* if we should insert a nl here, put it into
399 --line_no; /* this will be re-increased when the nl is
400 * read from the buffer */
403 if (verbose && !flushed_nl) /* print error msg if the line
404 * was not already broken */
405 diag2(0, "Line broken");
408 for (t_ptr = token; *t_ptr; ++t_ptr)
409 *sc_end++ = *t_ptr; /* copy token into temp buffer */
413 ps.search_brace = false; /* stop looking for start of
415 bp_save = buf_ptr; /* save current input buffer */
417 buf_ptr = save_com; /* fix so that subsequent calls to
418 * lexi will take tokens out of
420 *sc_end++ = ' ';/* add trailing blank, just in case */
424 } /* end of switch */
425 if (type_code != 0) /* we must make this check, just in case there
426 * was an unexpected EOF */
427 type_code = lexi(); /* read another token */
428 /* if (ps.search_brace) ps.procname[0] = 0; */
429 if ((is_procname = ps.procname[0]) && flushed_nl
430 && !procnames_start_line && ps.in_decl
431 && type_code == ident)
433 } /* end of while (search_brace) */
436 if (type_code == 0) { /* we got eof */
437 if (s_lab != e_lab || s_code != e_code
438 || s_com != e_com) /* must dump end of line */
440 if (ps.tos > 1) /* check for balanced braces */
441 diag2(1, "Stuff missing from end of file");
444 printf("There were %d output lines and %d comments\n",
445 ps.out_lines, ps.out_coms);
446 printf("(Lines with comments)/(Lines with code): %6.3f\n",
447 (1.0 * ps.com_lines) / code_lines);
453 (type_code != comment) &&
454 (type_code != newline) &&
455 (type_code != preesc) &&
456 (type_code != form_feed)) {
458 (type_code != semicolon) &&
459 (type_code != lbrace || !btype_2)) {
460 /* we should force a broken line here */
461 if (verbose && !flushed_nl)
462 diag2(0, "Line broken");
465 ps.want_blank = false; /* dont insert blank at line start */
468 ps.in_stmt = true; /* turn on flag which causes an extra level of
469 * indentation. this is turned off by a ; or
471 if (s_com != e_com) { /* the turkey has embedded a comment
472 * in a line. fix it */
474 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
479 *e_code = '\0'; /* null terminate code sect */
480 ps.want_blank = false;
484 else if (type_code != comment) /* preserve force_nl thru a comment */
485 force_nl = false; /* cancel forced newline after newline, form
490 /*-----------------------------------------------------*\
491 | do switch on type of token scanned |
492 \*-----------------------------------------------------*/
494 switch (type_code) { /* now, decide what to do with the token */
496 case form_feed: /* found a form feed in line */
497 ps.use_ff = true; /* a form feed is treated much like a newline */
499 ps.want_blank = false;
503 if (ps.last_token != comma || ps.p_l_follow > 0
504 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
506 ps.want_blank = false;
508 ++line_no; /* keep track of input line number */
511 case lparen: /* got a '(' or '[' */
512 ++ps.p_l_follow; /* count parens to make Healy happy */
513 if (ps.want_blank && *token != '[' &&
514 (ps.last_token != ident || proc_calls_space ||
515 /* offsetof (1) is never allowed a space; sizeof (2) gets
516 * one iff -bs; all other keywords (>2) always get a space
518 (ps.keyword + Bill_Shannon > 2)))
520 ps.want_blank = false;
521 if (ps.in_decl && !ps.block_init && !ps.dumped_decl_indent &&
523 /* function pointer declarations */
525 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
526 e_code += strlen(e_code);
529 indent_declaration(dec_ind, tabs_to_var);
531 ps.dumped_decl_indent = true;
534 *e_code++ = token[0];
535 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
536 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
537 && ps.paren_indents[0] < 2 * ps.ind_size)
538 ps.paren_indents[0] = 2 * ps.ind_size;
539 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
541 * this is a kluge to make sure that declarations will be
542 * aligned right if proc decl has an explicit type on it, i.e.
545 parse(semicolon); /* I said this was a kluge... */
546 ps.in_or_st = false; /* turn off flag for structure decl or
549 /* parenthesized type following sizeof or offsetof is not a cast */
550 if (ps.keyword == 1 || ps.keyword == 2)
551 ps.not_cast_mask |= 1 << ps.p_l_follow;
554 case rparen: /* got a ')' or ']' */
556 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.not_cast_mask) {
558 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
559 ps.want_blank = space_after_cast;
561 ps.want_blank = true;
562 ps.not_cast_mask &= (1 << ps.p_l_follow) - 1;
563 if (--ps.p_l_follow < 0) {
565 diag3(0, "Extra %c", *token);
567 if (e_code == s_code) /* if the paren starts the line */
568 ps.paren_level = ps.p_l_follow; /* then indent it */
570 *e_code++ = token[0];
572 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
573 * (...), or some such */
575 force_nl = true;/* must force newline after if */
576 ps.last_u_d = true; /* inform lexi that a following
577 * operator is unary */
578 ps.in_stmt = false; /* dont use stmt continuation
581 parse(hd_type); /* let parser worry about if, or whatever */
583 ps.search_brace = btype_2; /* this should insure that constructs
584 * such as main(){...} and int[]{...}
585 * have their braces put in the right
589 case unary_op: /* this could be any unary operation */
590 if (!ps.dumped_decl_indent && ps.in_decl && !is_procname &&
592 /* pointer declarations */
596 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7,
598 e_code += strlen(e_code);
601 /* if this is a unary op in a declaration, we should
602 * indent this token */
603 for (i = 0; token[i]; ++i)
604 /* find length of token */;
605 indent_declaration(dec_ind - i, tabs_to_var);
607 ps.dumped_decl_indent = true;
609 else if (ps.want_blank)
612 const char *res = token;
614 if (troff && token[0] == '-' && token[1] == '>')
616 for (t_ptr = res; *t_ptr; ++t_ptr) {
621 ps.want_blank = false;
624 case binary_op: /* any binary operation */
628 const char *res = token;
647 else if (token[1] == 0)
651 for (t_ptr = res; *t_ptr; ++t_ptr) {
653 *e_code++ = *t_ptr; /* move the operator */
656 ps.want_blank = true;
659 case postop: /* got a trailing ++ or -- */
660 *e_code++ = token[0];
661 *e_code++ = token[1];
662 ps.want_blank = true;
665 case question: /* got a ? */
666 squest++; /* this will be used when a later colon
667 * appears so we can distinguish the
668 * <c>?<n>:<n> construct */
672 ps.want_blank = true;
675 case casestmt: /* got word 'case' or 'default' */
676 scase = true; /* so we can process the later colon properly */
679 case colon: /* got a ':' */
680 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
685 ps.want_blank = true;
690 ps.want_blank = false;
693 ps.in_stmt = false; /* seeing a label does not imply we are in a
695 for (t_ptr = s_code; *t_ptr; ++t_ptr)
696 *e_lab++ = *t_ptr; /* turn everything so far into a label */
702 force_nl = ps.pcase = scase; /* ps.pcase will be used by
703 * dump_line to decide how to
704 * indent the label. force_nl
705 * will force a case n: to be
706 * on a line by itself */
708 ps.want_blank = false;
711 case semicolon: /* got a ';' */
712 if (ps.dec_nest == 0)
713 ps.in_or_st = false;/* we are not in an initialization or
714 * structure declaration */
715 scase = false; /* these will only need resetting in an error */
717 if (ps.last_token == rparen && rparen_count == 0)
718 ps.in_parameter_declaration = 0;
720 ps.not_cast_mask = 0;
722 ps.block_init_level = 0;
725 if (ps.in_decl && s_code == e_code && !ps.block_init &&
726 !ps.dumped_decl_indent) {
727 /* indent stray semicolons in declarations */
728 indent_declaration(dec_ind - 1, tabs_to_var);
729 ps.dumped_decl_indent = true;
732 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
733 * structure declaration, we
736 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
739 * This should be true iff there were unbalanced parens in the
740 * stmt. It is a bit complicated, because the semicolon might
743 diag2(1, "Unbalanced parens");
745 if (sp_sw) { /* this is a check for an if, while, etc. with
746 * unbalanced parens */
748 parse(hd_type); /* dont lose the if, or whatever */
752 ps.want_blank = true;
753 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
754 * middle of a stmt */
756 if (!sp_sw) { /* if not if for (;;) */
757 parse(semicolon); /* let parser know about end of stmt */
758 force_nl = true;/* force newline after an end of stmt */
762 case lbrace: /* got a '{' */
763 ps.in_stmt = false; /* dont indent the {} */
765 force_nl = true;/* force other stuff on same line as '{' onto
767 else if (ps.block_init_level <= 0)
768 ps.block_init_level = 1;
770 ps.block_init_level++;
772 if (s_code != e_code && !ps.block_init) {
775 ps.want_blank = false;
777 else if (ps.in_parameter_declaration && !ps.in_or_st) {
779 if (function_brace_split) { /* dump the line prior to the
782 ps.want_blank = false;
783 } else /* add a space between the decl and brace */
784 ps.want_blank = true;
787 if (ps.in_parameter_declaration)
788 prefix_blankline_requested = 0;
790 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
792 diag2(1, "Unbalanced parens");
794 if (sp_sw) { /* check for unclosed if, for, etc. */
797 ps.ind_level = ps.i_l_follow;
800 if (s_code == e_code)
801 ps.ind_stmt = false; /* dont put extra indentation on line
803 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
804 * declaration or an init */
805 di_stack[ps.dec_nest++] = dec_ind;
809 ps.decl_on_line = false; /* we can't be in the middle of
810 * a declaration, so don't do
811 * special indentation of
813 if (blanklines_after_declarations_at_proctop
814 && ps.in_parameter_declaration)
815 postfix_blankline_requested = 1;
816 ps.in_parameter_declaration = 0;
819 parse(lbrace); /* let parser know about this */
820 if (ps.want_blank) /* put a blank before '{' if '{' is not at
823 ps.want_blank = false;
825 ps.just_saw_decl = 0;
828 case rbrace: /* got a '}' */
829 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
833 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
834 diag2(1, "Unbalanced parens");
838 ps.just_saw_decl = 0;
839 ps.block_init_level--;
840 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
843 diag2(0, "Line broken");
847 ps.want_blank = true;
848 ps.in_stmt = ps.ind_stmt = false;
849 if (ps.dec_nest > 0) { /* we are in multi-level structure
851 dec_ind = di_stack[--ps.dec_nest];
852 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
853 ps.just_saw_decl = 2;
856 prefix_blankline_requested = 0;
857 parse(rbrace); /* let parser know about this */
858 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
859 && ps.il[ps.tos] >= ps.ind_level;
860 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
861 postfix_blankline_requested = 1;
864 case swstmt: /* got keyword "switch" */
866 hd_type = swstmt; /* keep this for when we have seen the
868 goto copy_id; /* go move the token into buffer */
870 case sp_paren: /* token is if, while, for */
871 sp_sw = true; /* the interesting stuff is done after the
872 * expression is scanned */
873 hd_type = (*token == 'i' ? ifstmt :
874 (*token == 'w' ? whilestmt : forstmt));
877 * remember the type of header for later use by parser
879 goto copy_id; /* copy the token into line */
881 case sp_nparen: /* got else, do */
884 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
886 diag2(0, "Line broken");
887 dump_line();/* make sure this starts a line */
888 ps.want_blank = false;
890 force_nl = true;/* also, following stuff must go onto new line */
895 if (e_code != s_code) { /* make sure this starts a line */
897 diag2(0, "Line broken");
899 ps.want_blank = false;
901 force_nl = true;/* also, following stuff must go onto new line */
905 goto copy_id; /* move the token into line */
907 case decl: /* we have a declaration type (int, register,
909 parse(decl); /* let parser worry about indentation */
910 if (ps.last_token == rparen && ps.tos <= 1) {
911 ps.in_parameter_declaration = 1;
912 if (s_code != e_code) {
917 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
918 ps.ind_level = ps.i_l_follow = 1;
921 ps.in_or_st = true; /* this might be a structure or initialization
923 ps.in_decl = ps.decl_on_line = true;
924 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
925 ps.just_saw_decl = 2;
926 prefix_blankline_requested = 0;
927 for (i = 0; token[i++];); /* get length of token */
929 if (ps.ind_level == 0 || ps.dec_nest > 0) {
930 /* global variable or struct member in local variable */
931 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
932 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
935 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
936 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
940 case ident: /* got an identifier or constant */
941 if (ps.in_decl) { /* if we are in a declaration, we must indent
943 if (is_procname == 0 || !procnames_start_line) {
944 if (!ps.block_init && !ps.dumped_decl_indent) {
948 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
949 e_code += strlen(e_code);
951 indent_declaration(dec_ind, tabs_to_var);
952 ps.dumped_decl_indent = true;
953 ps.want_blank = false;
958 ps.want_blank = false;
959 if (dec_ind && s_code != e_code) {
966 else if (sp_sw && ps.p_l_follow == 0) {
976 if (troff && ps.keyword) {
977 e_code = chfont(&bodyf, &keywordf, e_code);
978 for (t_ptr = token; *t_ptr; ++t_ptr) {
980 *e_code++ = keywordf.allcaps && islower(*t_ptr)
981 ? toupper(*t_ptr) : *t_ptr;
983 e_code = chfont(&keywordf, &bodyf, e_code);
986 for (t_ptr = token; *t_ptr; ++t_ptr) {
990 ps.want_blank = true;
993 case period: /* treat a period kind of like a binary
995 *e_code++ = '.'; /* move the period into line */
996 ps.want_blank = false; /* dont put a blank after a period */
1000 ps.want_blank = (s_code != e_code); /* only put blank after comma
1001 * if comma does not start the
1003 if (ps.in_decl && is_procname == 0 && !ps.block_init &&
1004 !ps.dumped_decl_indent) {
1005 /* indent leading commas and not the actual identifiers */
1006 indent_declaration(dec_ind - 1, tabs_to_var);
1007 ps.dumped_decl_indent = true;
1010 if (ps.p_l_follow == 0) {
1011 if (ps.block_init_level <= 0)
1013 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1018 case preesc: /* got the character '#' */
1019 if ((s_com != e_com) ||
1023 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1030 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1032 if (buf_ptr >= buf_end)
1035 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1037 *e_lab = *buf_ptr++;
1038 if (buf_ptr >= buf_end)
1043 *e_lab++ = BACKSLASH;
1045 *e_lab++ = *buf_ptr++;
1046 if (buf_ptr >= buf_end)
1051 if (*buf_ptr == '*' && !in_comment && !quote) {
1053 *e_lab++ = *buf_ptr++;
1054 com_start = e_lab - s_lab - 2;
1066 if (*buf_ptr == '/' && in_comment) {
1068 *e_lab++ = *buf_ptr++;
1069 com_end = e_lab - s_lab;
1075 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1077 if (e_lab - s_lab == com_end && bp_save == NULL) {
1078 /* comment on preprocessor line */
1079 if (sc_end == NULL) /* if this is the first comment, we
1080 * must set up the buffer */
1081 sc_end = &(save_com[0]);
1083 *sc_end++ = '\n'; /* add newline between
1088 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1089 sc_end += com_end - com_start;
1090 if (sc_end >= &save_com[sc_size])
1092 e_lab = s_lab + com_start;
1093 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1095 bp_save = buf_ptr; /* save current input buffer */
1097 buf_ptr = save_com; /* fix so that subsequent calls to
1098 * lexi will take tokens out of
1100 *sc_end++ = ' '; /* add trailing blank, just in case */
1104 *e_lab = '\0'; /* null terminate line */
1108 if (strncmp(s_lab, "#if", 3) == 0) { /* also ifdef, ifndef */
1109 if ((size_t)ifdef_level < nitems(state_stack)) {
1110 match_state[ifdef_level].tos = -1;
1111 state_stack[ifdef_level++] = ps;
1114 diag2(1, "#if stack overflow");
1116 else if (strncmp(s_lab, "#el", 3) == 0) { /* else, elif */
1117 if (ifdef_level <= 0)
1118 diag2(1, s_lab[3] == 'i' ? "Unmatched #elif" : "Unmatched #else");
1120 match_state[ifdef_level - 1] = ps;
1121 ps = state_stack[ifdef_level - 1];
1124 else if (strncmp(s_lab, "#endif", 6) == 0) {
1125 if (ifdef_level <= 0)
1126 diag2(1, "Unmatched #endif");
1142 int d = nitems(recognized);
1144 if (strncmp(s_lab + 1, recognized[d].string, recognized[d].size) == 0)
1147 diag2(1, "Unrecognized cpp directive");
1151 if (blanklines_around_conditional_compilation) {
1152 postfix_blankline_requested++;
1153 n_real_blanklines = 0;
1156 postfix_blankline_requested = 0;
1157 prefix_blankline_requested = 0;
1159 break; /* subsequent processing of the newline
1160 * character will cause the line to be printed */
1162 case comment: /* we have gotten a / followed by * this is a biggie */
1163 if (flushed_nl) { /* we should force a broken line here */
1165 ps.want_blank = false; /* dont insert blank at line start */
1170 } /* end of big switch stmt */
1172 *e_code = '\0'; /* make sure code section is null terminated */
1173 if (type_code != comment && type_code != newline && type_code != preesc)
1174 ps.last_token = type_code;
1175 } /* end of main while (1) loop */
1179 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1180 * backup file will be ".Bfile" then make the backup file the input and
1181 * original input file the output
1188 char buff[8 * 1024];
1191 /* construct file name .Bfile */
1192 for (p = in_name; *p; p++); /* skip to end of string */
1193 while (p > in_name && *p != '/') /* find last '/' */
1197 sprintf(bakfile, "%s.BAK", p);
1199 /* copy in_name to backup file */
1200 bakchn = creat(bakfile, 0600);
1202 err(1, "%s", bakfile);
1203 while ((n = read(fileno(input), buff, sizeof(buff))) > 0)
1204 if (write(bakchn, buff, n) != n)
1205 err(1, "%s", bakfile);
1207 err(1, "%s", in_name);
1211 /* re-open backup file as the input file */
1212 input = fopen(bakfile, "r");
1214 err(1, "%s", bakfile);
1215 /* now the original input file will be the output */
1216 output = fopen(in_name, "w");
1217 if (output == NULL) {
1219 err(1, "%s", in_name);
1224 indent_declaration(int cur_dec_ind, int tabs_to_var)
1226 int pos = e_code - s_code;
1227 char *startpos = e_code;
1230 * get the tab math right for indentations that are not multiples of 8
1232 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
1233 pos += (ps.ind_level * ps.ind_size) % 8;
1234 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
1237 while ((pos & ~7) + 8 <= cur_dec_ind) {
1240 pos = (pos & ~7) + 8;
1242 while (pos < cur_dec_ind) {
1247 if (e_code == startpos && ps.want_blank) {
1249 ps.want_blank = false;