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