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. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#) Copyright (c) 1985 Sun Microsystems, Inc.
32 * @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)indent.c 5.17 (Berkeley) 6/7/93
35 * $FreeBSD: src/usr.bin/indent/indent.c,v 1.26 2010/03/31 16:55:47 avg Exp $
38 #include <sys/param.h>
46 #include "indent_globs.h"
47 #include "indent_codes.h"
50 static void bakcopy(void);
52 const char *in_name = "Standard Input"; /* will always point to name of input
54 const char *out_name = "Standard Output"; /* will always point to name
56 char bakfile[MAXPATHLEN] = "";
59 main(int argc, char **argv)
62 int dec_ind; /* current indentation for declarations */
63 int di_stack[20]; /* a stack of structure indentation levels */
64 int flushed_nl; /* used when buffering up comments to remember
65 * that a newline was passed over */
66 int force_nl; /* when true, code must be broken */
67 int hd_type = 0; /* used to store type of stmt for if (...),
69 int i; /* local loop counter */
70 int scase; /* set to true when we see a case, so we will
71 * know what to do with the following colon */
72 int sp_sw; /* when true, we are in the expression of
73 * if(...), while(...), etc. */
74 int squest; /* when this is positive, we have seen a ?
75 * without the matching : in a <c>?<s>:<s>
77 const char *t_ptr; /* used for copying tokens */
78 int tabs_to_var; /* true if using tabs to indent to var name */
79 int type_code; /* the type of token, returned by lexi */
81 int last_else = 0; /* true iff last keyword was an else */
84 /*-----------------------------------------------*\
86 \*-----------------------------------------------*/
90 ps.p_stack[0] = stmt; /* this is the parser's stack */
91 ps.last_nl = true; /* this is true if the last thing scanned was
93 ps.last_token = semicolon;
94 combuf = (char *) malloc(bufsize);
97 labbuf = (char *) malloc(bufsize);
100 codebuf = (char *) malloc(bufsize);
103 tokenbuf = (char *) malloc(bufsize);
104 if (tokenbuf == NULL)
106 l_com = combuf + bufsize - 5;
107 l_lab = labbuf + bufsize - 5;
108 l_code = codebuf + bufsize - 5;
109 l_token = tokenbuf + bufsize - 5;
110 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
112 combuf[1] = codebuf[1] = labbuf[1] = '\0';
113 ps.else_if = 1; /* Default else-if special processing to on */
114 s_lab = e_lab = labbuf + 1;
115 s_code = e_code = codebuf + 1;
116 s_com = e_com = combuf + 1;
117 s_token = e_token = tokenbuf + 1;
119 in_buffer = (char *) malloc(10);
120 if (in_buffer == NULL)
122 in_buffer_limit = in_buffer + 8;
123 buf_ptr = buf_end = in_buffer;
125 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
126 sp_sw = force_nl = false;
130 di_stack[ps.dec_nest = 0] = 0;
131 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
133 scase = ps.pcase = false;
142 /*--------------------------------------------------*\
143 | COMMAND LINE SCAN |
144 \*--------------------------------------------------*/
147 max_col = 78; /* -l78 */
148 lineup_to_parens = 1; /* -lp */
149 ps.ljust_decl = 0; /* -ndj */
150 ps.com_ind = 33; /* -c33 */
151 star_comment_cont = 1; /* -sc */
152 ps.ind_size = 8; /* -i8 */
154 ps.decl_indent = 16; /* -di16 */
155 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
156 * by an arg, we will set this equal to
158 ps.indent_parameters = 1; /* -ip */
159 ps.decl_com_ind = 0; /* if this is not set to some positive value
160 * by an arg, we will set this equal to
162 btype_2 = 1; /* -br */
163 cuddle_else = 1; /* -ce */
164 ps.unindent_displace = 0; /* -d0 */
165 ps.case_indent = 0; /* -cli0 */
166 format_block_comments = 1; /* -fcb */
167 format_col1_comments = 1; /* -fc1 */
168 procnames_start_line = 1; /* -psl */
169 proc_calls_space = 0; /* -npcs */
170 comment_delimiter_on_blankline = 1; /* -cdb */
171 ps.leave_comma = 1; /* -nbc */
174 for (i = 1; i < argc; ++i)
175 if (strcmp(argv[i], "-npro") == 0)
181 for (i = 1; i < argc; ++i) {
184 * look thru args (if any) for changes to defaults
186 if (argv[i][0] != '-') { /* no flag on parameter */
187 if (input == NULL) { /* we must have the input file */
188 in_name = argv[i]; /* remember name of input file */
189 input = fopen(in_name, "r");
190 if (input == NULL) /* check for open error */
191 err(1, "%s", in_name);
194 else if (output == NULL) { /* we have the output file */
195 out_name = argv[i]; /* remember name of output file */
196 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
198 errx(1, "input and output files must be different");
200 output = fopen(out_name, "w");
201 if (output == NULL) /* check for create error */
202 err(1, "%s", out_name);
205 errx(1, "unknown parameter: %s", argv[i]);
212 if (output == NULL) {
213 if (troff || input == stdin)
221 ps.com_ind = 2; /* dont put normal comments before column 2 */
223 if (bodyf.font[0] == 0)
224 parsefont(&bodyf, "R");
225 if (scomf.font[0] == 0)
226 parsefont(&scomf, "I");
227 if (blkcomf.font[0] == 0)
228 blkcomf = scomf, blkcomf.size += 2;
229 if (boxcomf.font[0] == 0)
231 if (stringf.font[0] == 0)
232 parsefont(&stringf, "L");
233 if (keywordf.font[0] == 0)
234 parsefont(&keywordf, "B");
235 writefdef(&bodyf, 'B');
236 writefdef(&scomf, 'C');
237 writefdef(&blkcomf, 'L');
238 writefdef(&boxcomf, 'X');
239 writefdef(&stringf, 'S');
240 writefdef(&keywordf, 'K');
242 if (block_comment_max_col <= 0)
243 block_comment_max_col = max_col;
244 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
245 ps.local_decl_indent = ps.decl_indent;
246 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
247 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
248 if (continuation_indent == 0)
249 continuation_indent = ps.ind_size;
250 fill_buffer(); /* get first batch of stuff into input buffer */
261 col = ((col - 1) & ~7) + 9;
266 if (col > ps.ind_size)
267 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
270 const char *p = in_name,
276 fprintf(output, ".Fn \"%s\"\n", beg);
282 while (1) { /* this is the main loop. it will go until we
286 type_code = lexi(); /* lexi reads one token. The actual
287 * characters read are stored in "token". lexi
288 * returns a code indicating the type of token */
289 is_procname = ps.procname[0];
292 * The following code moves everything following an if (), while (),
293 * else, etc. up to the start of the following stmt to a buffer. This
294 * allows proper handling of both kinds of brace placement.
298 while (ps.search_brace) { /* if we scanned an if(), while(),
299 * etc., we might need to copy stuff
300 * into a buffer we must loop, copying
301 * stuff into save_com, until we find
302 * the start of the stmt which follows
303 * the if, or whatever */
309 break; /* form feeds and newlines found here will be
312 case lbrace: /* this is a brace that starts the compound
314 if (sc_end == NULL) { /* ignore buffering if a comment wasn't
316 ps.search_brace = false;
320 save_com[0] = '{'; /* we either want to put the brace
321 * right after the if */
322 goto sw_buffer; /* go to common code to get out of
326 case comment: /* we have a comment, so we must copy it into
328 if (!flushed_nl || sc_end != NULL) {
329 if (sc_end == NULL) { /* if this is the first comment, we
330 * must set up the buffer */
331 save_com[0] = save_com[1] = ' ';
332 sc_end = &(save_com[2]);
335 *sc_end++ = '\n'; /* add newline between
340 *sc_end++ = '/'; /* copy in start of comment */
343 for (;;) { /* loop until we get to the end of the comment */
344 *sc_end = *buf_ptr++;
345 if (buf_ptr >= buf_end)
348 if (*sc_end++ == '*' && *buf_ptr == '/')
349 break; /* we are at end of comment */
351 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
353 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
358 *sc_end++ = '/'; /* add ending slash */
359 if (++buf_ptr >= buf_end) /* get past / in buffer */
364 default: /* it is the start of a normal statement */
365 if (flushed_nl) /* if we flushed a newline, make sure it is
368 if ((type_code == sp_paren && *token == 'i'
369 && last_else && ps.else_if)
370 || (type_code == sp_nparen && *token == 'e'
371 && e_code != s_code && e_code[-1] == '}'))
374 if (sc_end == NULL) { /* ignore buffering if comment wasn't
376 ps.search_brace = false;
379 if (force_nl) { /* if we should insert a nl here, put it into
382 --line_no; /* this will be re-increased when the nl is
383 * read from the buffer */
386 if (verbose && !flushed_nl) /* print error msg if the line
387 * was not already broken */
388 diag2(0, "Line broken");
391 for (t_ptr = token; *t_ptr; ++t_ptr)
392 *sc_end++ = *t_ptr; /* copy token into temp buffer */
396 ps.search_brace = false; /* stop looking for start of
398 bp_save = buf_ptr; /* save current input buffer */
400 buf_ptr = save_com; /* fix so that subsequent calls to
401 * lexi will take tokens out of
403 *sc_end++ = ' ';/* add trailing blank, just in case */
407 } /* end of switch */
408 if (type_code != 0) /* we must make this check, just in case there
409 * was an unexpected EOF */
410 type_code = lexi(); /* read another token */
411 /* if (ps.search_brace) ps.procname[0] = 0; */
412 if ((is_procname = ps.procname[0]) && flushed_nl
413 && !procnames_start_line && ps.in_decl
414 && type_code == ident)
416 } /* end of while (search_brace) */
419 if (type_code == 0) { /* we got eof */
420 if (s_lab != e_lab || s_code != e_code
421 || s_com != e_com) /* must dump end of line */
423 if (ps.tos > 1) /* check for balanced braces */
424 diag2(1, "Stuff missing from end of file");
427 printf("There were %d output lines and %d comments\n",
428 ps.out_lines, ps.out_coms);
429 printf("(Lines with comments)/(Lines with code): %6.3f\n",
430 (1.0 * ps.com_lines) / code_lines);
436 (type_code != comment) &&
437 (type_code != newline) &&
438 (type_code != preesc) &&
439 (type_code != form_feed)) {
441 (type_code != semicolon) &&
442 (type_code != lbrace || !btype_2)) {
443 /* we should force a broken line here */
444 if (verbose && !flushed_nl)
445 diag2(0, "Line broken");
448 ps.want_blank = false; /* dont insert blank at line start */
451 ps.in_stmt = true; /* turn on flag which causes an extra level of
452 * indentation. this is turned off by a ; or
454 if (s_com != e_com) { /* the turkey has embedded a comment
455 * in a line. fix it */
457 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
462 *e_code = '\0'; /* null terminate code sect */
463 ps.want_blank = false;
467 else if (type_code != comment) /* preserve force_nl thru a comment */
468 force_nl = false; /* cancel forced newline after newline, form
473 /*-----------------------------------------------------*\
474 | do switch on type of token scanned |
475 \*-----------------------------------------------------*/
477 switch (type_code) { /* now, decide what to do with the token */
479 case form_feed: /* found a form feed in line */
480 ps.use_ff = true; /* a form feed is treated much like a newline */
482 ps.want_blank = false;
486 if (ps.last_token != comma || ps.p_l_follow > 0
487 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
489 ps.want_blank = false;
491 ++line_no; /* keep track of input line number */
494 case lparen: /* got a '(' or '[' */
495 ++ps.p_l_follow; /* count parens to make Healy happy */
496 if (ps.want_blank && *token != '[' &&
497 (ps.last_token != ident || proc_calls_space
498 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
500 if (ps.in_decl && !ps.block_init)
501 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
502 ps.dumped_decl_indent = 1;
503 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
504 e_code += strlen(e_code);
507 while ((e_code - s_code) < dec_ind) {
511 *e_code++ = token[0];
514 *e_code++ = token[0];
515 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
516 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
517 && ps.paren_indents[0] < 2 * ps.ind_size)
518 ps.paren_indents[0] = 2 * ps.ind_size;
519 ps.want_blank = false;
520 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
522 * this is a kluge to make sure that declarations will be
523 * aligned right if proc decl has an explicit type on it, i.e.
526 parse(semicolon); /* I said this was a kluge... */
527 ps.in_or_st = false; /* turn off flag for structure decl or
530 if (ps.sizeof_keyword)
531 ps.sizeof_mask |= 1 << ps.p_l_follow;
534 case rparen: /* got a ')' or ']' */
536 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
538 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
539 ps.want_blank = false;
541 ps.want_blank = true;
542 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
543 if (--ps.p_l_follow < 0) {
545 diag3(0, "Extra %c", *token);
547 if (e_code == s_code) /* if the paren starts the line */
548 ps.paren_level = ps.p_l_follow; /* then indent it */
550 *e_code++ = token[0];
552 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
553 * (...), or some such */
555 force_nl = true;/* must force newline after if */
556 ps.last_u_d = true; /* inform lexi that a following
557 * operator is unary */
558 ps.in_stmt = false; /* dont use stmt continuation
561 parse(hd_type); /* let parser worry about if, or whatever */
563 ps.search_brace = btype_2; /* this should insure that constructs
564 * such as main(){...} and int[]{...}
565 * have their braces put in the right
569 case unary_op: /* this could be any unary operation */
573 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
574 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
575 ps.dumped_decl_indent = 1;
576 e_code += strlen(e_code);
579 const char *res = token;
581 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
582 * in a declaration, we
585 for (i = 0; token[i]; ++i); /* find length of token */
586 while ((e_code - s_code) < (dec_ind - i)) {
588 *e_code++ = ' '; /* pad it */
591 if (troff && token[0] == '-' && token[1] == '>')
593 for (t_ptr = res; *t_ptr; ++t_ptr) {
598 ps.want_blank = false;
601 case binary_op: /* any binary operation */
605 const char *res = token;
624 else if (token[1] == 0)
628 for (t_ptr = res; *t_ptr; ++t_ptr) {
630 *e_code++ = *t_ptr; /* move the operator */
633 ps.want_blank = true;
636 case postop: /* got a trailing ++ or -- */
637 *e_code++ = token[0];
638 *e_code++ = token[1];
639 ps.want_blank = true;
642 case question: /* got a ? */
643 squest++; /* this will be used when a later colon
644 * appears so we can distinguish the
645 * <c>?<n>:<n> construct */
649 ps.want_blank = true;
652 case casestmt: /* got word 'case' or 'default' */
653 scase = true; /* so we can process the later colon properly */
656 case colon: /* got a ':' */
657 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
662 ps.want_blank = true;
667 ps.want_blank = false;
670 ps.in_stmt = false; /* seeing a label does not imply we are in a
672 for (t_ptr = s_code; *t_ptr; ++t_ptr)
673 *e_lab++ = *t_ptr; /* turn everything so far into a label */
679 force_nl = ps.pcase = scase; /* ps.pcase will be used by
680 * dump_line to decide how to
681 * indent the label. force_nl
682 * will force a case n: to be
683 * on a line by itself */
685 ps.want_blank = false;
688 case semicolon: /* got a ';' */
689 ps.in_or_st = false;/* we are not in an initialization or
690 * structure declaration */
691 scase = false; /* these will only need resetting in an error */
693 if (ps.last_token == rparen && rparen_count == 0)
694 ps.in_parameter_declaration = 0;
698 ps.block_init_level = 0;
701 if (ps.in_decl && s_code == e_code && !ps.block_init)
702 while ((e_code - s_code) < (dec_ind - 1)) {
707 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
708 * structure declaration, we
711 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
714 * This should be true iff there were unbalanced parens in the
715 * stmt. It is a bit complicated, because the semicolon might
718 diag2(1, "Unbalanced parens");
720 if (sp_sw) { /* this is a check for an if, while, etc. with
721 * unbalanced parens */
723 parse(hd_type); /* dont lose the if, or whatever */
727 ps.want_blank = true;
728 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
729 * middle of a stmt */
731 if (!sp_sw) { /* if not if for (;;) */
732 parse(semicolon); /* let parser know about end of stmt */
733 force_nl = true;/* force newline after an end of stmt */
737 case lbrace: /* got a '{' */
738 ps.in_stmt = false; /* dont indent the {} */
740 force_nl = true;/* force other stuff on same line as '{' onto
742 else if (ps.block_init_level <= 0)
743 ps.block_init_level = 1;
745 ps.block_init_level++;
747 if (s_code != e_code && !ps.block_init) {
750 ps.want_blank = false;
752 else if (ps.in_parameter_declaration && !ps.in_or_st) {
754 if (function_brace_split) { /* dump the line prior to the
757 ps.want_blank = false;
758 } else /* add a space between the decl and brace */
759 ps.want_blank = true;
762 if (ps.in_parameter_declaration)
763 prefix_blankline_requested = 0;
765 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
767 diag2(1, "Unbalanced parens");
769 if (sp_sw) { /* check for unclosed if, for, etc. */
772 ps.ind_level = ps.i_l_follow;
775 if (s_code == e_code)
776 ps.ind_stmt = false; /* dont put extra indentation on line
778 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
779 * declaration or an init */
780 di_stack[ps.dec_nest++] = dec_ind;
784 ps.decl_on_line = false; /* we can't be in the middle of
785 * a declaration, so don't do
786 * special indentation of
788 if (blanklines_after_declarations_at_proctop
789 && ps.in_parameter_declaration)
790 postfix_blankline_requested = 1;
791 ps.in_parameter_declaration = 0;
794 parse(lbrace); /* let parser know about this */
795 if (ps.want_blank) /* put a blank before '{' if '{' is not at
798 ps.want_blank = false;
800 ps.just_saw_decl = 0;
803 case rbrace: /* got a '}' */
804 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
808 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
809 diag2(1, "Unbalanced parens");
813 ps.just_saw_decl = 0;
814 ps.block_init_level--;
815 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
818 diag2(0, "Line broken");
822 ps.want_blank = true;
823 ps.in_stmt = ps.ind_stmt = false;
824 if (ps.dec_nest > 0) { /* we are in multi-level structure
826 dec_ind = di_stack[--ps.dec_nest];
827 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
828 ps.just_saw_decl = 2;
831 prefix_blankline_requested = 0;
832 parse(rbrace); /* let parser know about this */
833 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
834 && ps.il[ps.tos] >= ps.ind_level;
835 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
836 postfix_blankline_requested = 1;
839 case swstmt: /* got keyword "switch" */
841 hd_type = swstmt; /* keep this for when we have seen the
843 goto copy_id; /* go move the token into buffer */
845 case sp_paren: /* token is if, while, for */
846 sp_sw = true; /* the interesting stuff is done after the
847 * expression is scanned */
848 hd_type = (*token == 'i' ? ifstmt :
849 (*token == 'w' ? whilestmt : forstmt));
852 * remember the type of header for later use by parser
854 goto copy_id; /* copy the token into line */
856 case sp_nparen: /* got else, do */
859 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
861 diag2(0, "Line broken");
862 dump_line();/* make sure this starts a line */
863 ps.want_blank = false;
865 force_nl = true;/* also, following stuff must go onto new line */
870 if (e_code != s_code) { /* make sure this starts a line */
872 diag2(0, "Line broken");
874 ps.want_blank = false;
876 force_nl = true;/* also, following stuff must go onto new line */
880 goto copy_id; /* move the token into line */
882 case decl: /* we have a declaration type (int, register,
884 parse(decl); /* let parser worry about indentation */
885 if (ps.last_token == rparen && ps.tos <= 1) {
886 ps.in_parameter_declaration = 1;
887 if (s_code != e_code) {
892 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
893 ps.ind_level = ps.i_l_follow = 1;
896 ps.in_or_st = true; /* this might be a structure or initialization
898 ps.in_decl = ps.decl_on_line = true;
899 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
900 ps.just_saw_decl = 2;
901 prefix_blankline_requested = 0;
902 for (i = 0; token[i++];); /* get length of token */
904 if (ps.ind_level == 0 || ps.dec_nest > 0) {
905 /* global variable or struct member in local variable */
906 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
907 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
910 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
911 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
915 case ident: /* got an identifier or constant */
916 if (ps.in_decl) { /* if we are in a declaration, we must indent
918 if (is_procname == 0 || !procnames_start_line) {
919 if (!ps.block_init) {
920 if (troff && !ps.dumped_decl_indent) {
923 ps.want_blank = false;
924 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
925 ps.dumped_decl_indent = 1;
926 e_code += strlen(e_code);
932 * in order to get the tab math right for
933 * indentations that are not multiples of 8 we
934 * need to modify both startpos and dec_ind
935 * (cur_dec_ind) here by eight minus the
936 * remainder of the current starting column
937 * divided by eight. This seems to be a
938 * properly working fix
940 startpos = e_code - s_code;
941 cur_dec_ind = dec_ind;
943 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
944 pos += (ps.ind_level * ps.ind_size) % 8;
945 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
949 while ((pos & ~7) + 8 <= cur_dec_ind) {
952 pos = (pos & ~7) + 8;
955 while (pos < cur_dec_ind) {
960 if (ps.want_blank && e_code - s_code == startpos)
962 ps.want_blank = false;
968 ps.want_blank = false;
969 if (dec_ind && s_code != e_code)
974 else if (sp_sw && ps.p_l_follow == 0) {
984 if (troff && ps.its_a_keyword) {
985 e_code = chfont(&bodyf, &keywordf, e_code);
986 for (t_ptr = token; *t_ptr; ++t_ptr) {
988 *e_code++ = keywordf.allcaps && islower(*t_ptr)
989 ? toupper(*t_ptr) : *t_ptr;
991 e_code = chfont(&keywordf, &bodyf, e_code);
994 for (t_ptr = token; *t_ptr; ++t_ptr) {
998 ps.want_blank = true;
1001 case period: /* treat a period kind of like a binary
1003 *e_code++ = '.'; /* move the period into line */
1004 ps.want_blank = false; /* dont put a blank after a period */
1008 ps.want_blank = (s_code != e_code); /* only put blank after comma
1009 * if comma does not start the
1011 if (ps.in_decl && is_procname == 0 && !ps.block_init)
1012 while ((e_code - s_code) < (dec_ind - 1)) {
1018 if (ps.p_l_follow == 0) {
1019 if (ps.block_init_level <= 0)
1021 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1026 case preesc: /* got the character '#' */
1027 if ((s_com != e_com) ||
1031 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1038 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1040 if (buf_ptr >= buf_end)
1043 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1045 *e_lab = *buf_ptr++;
1046 if (buf_ptr >= buf_end)
1051 *e_lab++ = BACKSLASH;
1053 *e_lab++ = *buf_ptr++;
1054 if (buf_ptr >= buf_end)
1059 if (*buf_ptr == '*' && !in_comment && !quote) {
1061 *e_lab++ = *buf_ptr++;
1062 com_start = e_lab - s_lab - 2;
1074 if (*buf_ptr == '/' && in_comment) {
1076 *e_lab++ = *buf_ptr++;
1077 com_end = e_lab - s_lab;
1083 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1085 if (e_lab - s_lab == com_end && bp_save == NULL) {
1086 /* comment on preprocessor line */
1087 if (sc_end == NULL) /* if this is the first comment, we
1088 * must set up the buffer */
1089 sc_end = &(save_com[0]);
1091 *sc_end++ = '\n'; /* add newline between
1096 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1097 sc_end += com_end - com_start;
1098 if (sc_end >= &save_com[sc_size])
1100 e_lab = s_lab + com_start;
1101 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1103 bp_save = buf_ptr; /* save current input buffer */
1105 buf_ptr = save_com; /* fix so that subsequent calls to
1106 * lexi will take tokens out of
1108 *sc_end++ = ' '; /* add trailing blank, just in case */
1112 *e_lab = '\0'; /* null terminate line */
1116 if (strncmp(s_lab, "#if", 3) == 0) {
1117 if (blanklines_around_conditional_compilation) {
1119 prefix_blankline_requested++;
1120 while ((c = getc(input)) == '\n');
1123 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1124 match_state[ifdef_level].tos = -1;
1125 state_stack[ifdef_level++] = ps;
1128 diag2(1, "#if stack overflow");
1130 else if (strncmp(s_lab, "#else", 5) == 0)
1131 if (ifdef_level <= 0)
1132 diag2(1, "Unmatched #else");
1134 match_state[ifdef_level - 1] = ps;
1135 ps = state_stack[ifdef_level - 1];
1137 else if (strncmp(s_lab, "#endif", 6) == 0) {
1138 if (ifdef_level <= 0)
1139 diag2(1, "Unmatched #endif");
1145 * This match needs to be more intelligent before the
1148 if (match_state[ifdef_level].tos >= 0
1149 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1150 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1153 if (blanklines_around_conditional_compilation) {
1154 postfix_blankline_requested++;
1155 n_real_blanklines = 0;
1158 break; /* subsequent processing of the newline
1159 * character will cause the line to be printed */
1161 case comment: /* we have gotten a / followed by * this is a biggie */
1162 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);