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);
67 const char *in_name = "Standard Input"; /* will always point to name of input
69 const char *out_name = "Standard Output"; /* will always point to name
71 char bakfile[MAXPATHLEN] = "";
74 main(int argc, char **argv)
77 int dec_ind; /* current indentation for declarations */
78 int di_stack[20]; /* a stack of structure indentation levels */
79 int flushed_nl; /* used when buffering up comments to remember
80 * that a newline was passed over */
81 int force_nl; /* when true, code must be broken */
82 int hd_type = 0; /* used to store type of stmt for if (...),
84 int i; /* local loop counter */
85 int scase; /* set to true when we see a case, so we will
86 * know what to do with the following colon */
87 int sp_sw; /* when true, we are in the expression of
88 * if(...), while(...), etc. */
89 int squest; /* when this is positive, we have seen a ?
90 * without the matching : in a <c>?<s>:<s>
92 const char *t_ptr; /* used for copying tokens */
93 int tabs_to_var; /* true if using tabs to indent to var name */
94 int type_code; /* the type of token, returned by lexi */
96 int last_else = 0; /* true iff last keyword was an else */
99 /*-----------------------------------------------*\
101 \*-----------------------------------------------*/
105 ps.p_stack[0] = stmt; /* this is the parser's stack */
106 ps.last_nl = true; /* this is true if the last thing scanned was
108 ps.last_token = semicolon;
109 combuf = (char *) malloc(bufsize);
112 labbuf = (char *) malloc(bufsize);
115 codebuf = (char *) malloc(bufsize);
118 tokenbuf = (char *) malloc(bufsize);
119 if (tokenbuf == NULL)
121 l_com = combuf + bufsize - 5;
122 l_lab = labbuf + bufsize - 5;
123 l_code = codebuf + bufsize - 5;
124 l_token = tokenbuf + bufsize - 5;
125 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
127 combuf[1] = codebuf[1] = labbuf[1] = '\0';
128 ps.else_if = 1; /* Default else-if special processing to on */
129 s_lab = e_lab = labbuf + 1;
130 s_code = e_code = codebuf + 1;
131 s_com = e_com = combuf + 1;
132 s_token = e_token = tokenbuf + 1;
134 in_buffer = (char *) malloc(10);
135 if (in_buffer == NULL)
137 in_buffer_limit = in_buffer + 8;
138 buf_ptr = buf_end = in_buffer;
140 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
141 sp_sw = force_nl = false;
145 di_stack[ps.dec_nest = 0] = 0;
146 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
148 scase = ps.pcase = false;
157 /*--------------------------------------------------*\
158 | COMMAND LINE SCAN |
159 \*--------------------------------------------------*/
162 max_col = 78; /* -l78 */
163 lineup_to_parens = 1; /* -lp */
164 ps.ljust_decl = 0; /* -ndj */
165 ps.com_ind = 33; /* -c33 */
166 star_comment_cont = 1; /* -sc */
167 ps.ind_size = 8; /* -i8 */
169 ps.decl_indent = 16; /* -di16 */
170 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
171 * by an arg, we will set this equal to
173 ps.indent_parameters = 1; /* -ip */
174 ps.decl_com_ind = 0; /* if this is not set to some positive value
175 * by an arg, we will set this equal to
177 btype_2 = 1; /* -br */
178 cuddle_else = 1; /* -ce */
179 ps.unindent_displace = 0; /* -d0 */
180 ps.case_indent = 0; /* -cli0 */
181 format_block_comments = 1; /* -fcb */
182 format_col1_comments = 1; /* -fc1 */
183 procnames_start_line = 1; /* -psl */
184 proc_calls_space = 0; /* -npcs */
185 comment_delimiter_on_blankline = 1; /* -cdb */
186 ps.leave_comma = 1; /* -nbc */
189 for (i = 1; i < argc; ++i)
190 if (strcmp(argv[i], "-npro") == 0)
196 for (i = 1; i < argc; ++i) {
199 * look thru args (if any) for changes to defaults
201 if (argv[i][0] != '-') {/* no flag on parameter */
202 if (input == NULL) { /* we must have the input file */
203 in_name = argv[i]; /* remember name of input file */
204 input = fopen(in_name, "r");
205 if (input == NULL) /* check for open error */
206 err(1, "%s", in_name);
209 else if (output == NULL) { /* we have the output file */
210 out_name = argv[i]; /* remember name of output file */
211 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
213 errx(1, "input and output files must be different");
215 output = fopen(out_name, "w");
216 if (output == NULL) /* check for create error */
217 err(1, "%s", out_name);
220 errx(1, "unknown parameter: %s", argv[i]);
227 if (output == NULL) {
228 if (troff || input == stdin)
236 ps.com_ind = 2; /* dont put normal comments before column 2 */
238 if (bodyf.font[0] == 0)
239 parsefont(&bodyf, "R");
240 if (scomf.font[0] == 0)
241 parsefont(&scomf, "I");
242 if (blkcomf.font[0] == 0)
243 blkcomf = scomf, blkcomf.size += 2;
244 if (boxcomf.font[0] == 0)
246 if (stringf.font[0] == 0)
247 parsefont(&stringf, "L");
248 if (keywordf.font[0] == 0)
249 parsefont(&keywordf, "B");
250 writefdef(&bodyf, 'B');
251 writefdef(&scomf, 'C');
252 writefdef(&blkcomf, 'L');
253 writefdef(&boxcomf, 'X');
254 writefdef(&stringf, 'S');
255 writefdef(&keywordf, 'K');
257 if (block_comment_max_col <= 0)
258 block_comment_max_col = max_col;
259 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
260 ps.local_decl_indent = ps.decl_indent;
261 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
262 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
263 if (continuation_indent == 0)
264 continuation_indent = ps.ind_size;
265 fill_buffer(); /* get first batch of stuff into input buffer */
276 col = ((col - 1) & ~7) + 9;
281 if (col > ps.ind_size)
282 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
285 const char *p = in_name,
291 fprintf(output, ".Fn \"%s\"\n", beg);
297 while (1) { /* this is the main loop. it will go until we
301 type_code = lexi(); /* lexi reads one token. The actual
302 * characters read are stored in "token". lexi
303 * returns a code indicating the type of token */
304 is_procname = ps.procname[0];
307 * The following code moves everything following an if (), while (),
308 * else, etc. up to the start of the following stmt to a buffer. This
309 * allows proper handling of both kinds of brace placement.
313 while (ps.search_brace) { /* if we scanned an if(), while(),
314 * etc., we might need to copy stuff
315 * into a buffer we must loop, copying
316 * stuff into save_com, until we find
317 * the start of the stmt which follows
318 * the if, or whatever */
324 break; /* form feeds and newlines found here will be
327 case lbrace: /* this is a brace that starts the compound
329 if (sc_end == 0) { /* ignore buffering if a comment wasn't
331 ps.search_brace = false;
335 save_com[0] = '{'; /* we either want to put the brace
336 * right after the if */
337 goto sw_buffer; /* go to common code to get out of
340 case comment: /* we have a comment, so we must copy it into
342 if (!flushed_nl || sc_end != 0) {
343 if (sc_end == 0) { /* if this is the first comment, we
344 * must set up the buffer */
345 save_com[0] = save_com[1] = ' ';
346 sc_end = &(save_com[2]);
349 *sc_end++ = '\n'; /* add newline between
354 *sc_end++ = '/'; /* copy in start of comment */
357 for (;;) { /* loop until we get to the end of the comment */
358 *sc_end = *buf_ptr++;
359 if (buf_ptr >= buf_end)
362 if (*sc_end++ == '*' && *buf_ptr == '/')
363 break; /* we are at end of comment */
365 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
367 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
372 *sc_end++ = '/'; /* add ending slash */
373 if (++buf_ptr >= buf_end) /* get past / in buffer */
377 default: /* it is the start of a normal statement */
378 if (flushed_nl) /* if we flushed a newline, make sure it is
381 if ((type_code == sp_paren && *token == 'i'
382 && last_else && ps.else_if)
383 || (type_code == sp_nparen && *token == 'e'
384 && e_code != s_code && e_code[-1] == '}'))
387 if (sc_end == 0) { /* ignore buffering if comment wasn't
389 ps.search_brace = false;
392 if (force_nl) { /* if we should insert a nl here, put it into
395 --line_no; /* this will be re-increased when the nl is
396 * read from the buffer */
399 if (verbose && !flushed_nl) /* print error msg if the line
400 * was not already broken */
401 diag2(0, "Line broken");
404 for (t_ptr = token; *t_ptr; ++t_ptr)
405 *sc_end++ = *t_ptr; /* copy token into temp buffer */
409 ps.search_brace = false; /* stop looking for start of
411 bp_save = buf_ptr; /* save current input buffer */
413 buf_ptr = save_com; /* fix so that subsequent calls to
414 * lexi will take tokens out of
416 *sc_end++ = ' ';/* add trailing blank, just in case */
420 } /* end of switch */
421 if (type_code != 0) /* we must make this check, just in case there
422 * was an unexpected EOF */
423 type_code = lexi(); /* read another token */
424 /* if (ps.search_brace) ps.procname[0] = 0; */
425 if ((is_procname = ps.procname[0]) && flushed_nl
426 && !procnames_start_line && ps.in_decl
427 && type_code == ident)
429 } /* end of while (search_brace) */
432 if (type_code == 0) { /* we got eof */
433 if (s_lab != e_lab || s_code != e_code
434 || s_com != e_com) /* must dump end of line */
436 if (ps.tos > 1) /* check for balanced braces */
437 diag2(1, "Stuff missing from end of file");
440 printf("There were %d output lines and %d comments\n",
441 ps.out_lines, ps.out_coms);
442 printf("(Lines with comments)/(Lines with code): %6.3f\n",
443 (1.0 * ps.com_lines) / code_lines);
449 (type_code != comment) &&
450 (type_code != newline) &&
451 (type_code != preesc) &&
452 (type_code != form_feed)) {
454 (type_code != semicolon) &&
455 (type_code != lbrace || !btype_2)) {
456 /* we should force a broken line here */
457 if (verbose && !flushed_nl)
458 diag2(0, "Line broken");
461 ps.want_blank = false; /* dont insert blank at line start */
464 ps.in_stmt = true; /* turn on flag which causes an extra level of
465 * indentation. this is turned off by a ; or
467 if (s_com != e_com) { /* the turkey has embedded a comment
468 * in a line. fix it */
470 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
475 *e_code = '\0'; /* null terminate code sect */
476 ps.want_blank = false;
480 else if (type_code != comment) /* preserve force_nl thru a comment */
481 force_nl = false; /* cancel forced newline after newline, form
486 /*-----------------------------------------------------*\
487 | do switch on type of token scanned |
488 \*-----------------------------------------------------*/
490 switch (type_code) { /* now, decide what to do with the token */
492 case form_feed: /* found a form feed in line */
493 ps.use_ff = true; /* a form feed is treated much like a newline */
495 ps.want_blank = false;
499 if (ps.last_token != comma || ps.p_l_follow > 0
500 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
502 ps.want_blank = false;
504 ++line_no; /* keep track of input line number */
507 case lparen: /* got a '(' or '[' */
508 ++ps.p_l_follow; /* count parens to make Healy happy */
509 if (ps.want_blank && *token != '[' &&
510 (ps.last_token != ident || proc_calls_space
511 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
513 if (ps.in_decl && !ps.block_init)
514 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
515 ps.dumped_decl_indent = 1;
516 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
517 e_code += strlen(e_code);
520 while ((e_code - s_code) < dec_ind) {
524 *e_code++ = token[0];
527 *e_code++ = token[0];
528 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
529 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
530 && ps.paren_indents[0] < 2 * ps.ind_size)
531 ps.paren_indents[0] = 2 * ps.ind_size;
532 ps.want_blank = false;
533 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
535 * this is a kluge to make sure that declarations will be
536 * aligned right if proc decl has an explicit type on it, i.e.
539 parse(semicolon); /* I said this was a kluge... */
540 ps.in_or_st = false; /* turn off flag for structure decl or
543 if (ps.sizeof_keyword)
544 ps.sizeof_mask |= 1 << ps.p_l_follow;
547 case rparen: /* got a ')' or ']' */
549 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
551 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
552 ps.want_blank = false;
554 ps.want_blank = true;
555 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
556 if (--ps.p_l_follow < 0) {
558 diag3(0, "Extra %c", *token);
560 if (e_code == s_code) /* if the paren starts the line */
561 ps.paren_level = ps.p_l_follow; /* then indent it */
563 *e_code++ = token[0];
565 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
566 * (...), or some such */
568 force_nl = true;/* must force newline after if */
569 ps.last_u_d = true; /* inform lexi that a following
570 * operator is unary */
571 ps.in_stmt = false; /* dont use stmt continuation
574 parse(hd_type); /* let parser worry about if, or whatever */
576 ps.search_brace = btype_2; /* this should insure that constructs
577 * such as main(){...} and int[]{...}
578 * have their braces put in the right
582 case unary_op: /* this could be any unary operation */
586 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
587 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
588 ps.dumped_decl_indent = 1;
589 e_code += strlen(e_code);
592 const char *res = token;
594 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
595 * in a declaration, we
598 for (i = 0; token[i]; ++i); /* find length of token */
599 while ((e_code - s_code) < (dec_ind - i)) {
601 *e_code++ = ' '; /* pad it */
604 if (troff && token[0] == '-' && token[1] == '>')
606 for (t_ptr = res; *t_ptr; ++t_ptr) {
611 ps.want_blank = false;
614 case binary_op: /* any binary operation */
618 const char *res = token;
637 else if (token[1] == 0)
641 for (t_ptr = res; *t_ptr; ++t_ptr) {
643 *e_code++ = *t_ptr; /* move the operator */
646 ps.want_blank = true;
649 case postop: /* got a trailing ++ or -- */
650 *e_code++ = token[0];
651 *e_code++ = token[1];
652 ps.want_blank = true;
655 case question: /* got a ? */
656 squest++; /* this will be used when a later colon
657 * appears so we can distinguish the
658 * <c>?<n>:<n> construct */
662 ps.want_blank = true;
665 case casestmt: /* got word 'case' or 'default' */
666 scase = true; /* so we can process the later colon properly */
669 case colon: /* got a ':' */
670 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
675 ps.want_blank = true;
680 ps.want_blank = false;
683 ps.in_stmt = false; /* seeing a label does not imply we are in a
685 for (t_ptr = s_code; *t_ptr; ++t_ptr)
686 *e_lab++ = *t_ptr; /* turn everything so far into a label */
692 force_nl = ps.pcase = scase; /* ps.pcase will be used by
693 * dump_line to decide how to
694 * indent the label. force_nl
695 * will force a case n: to be
696 * on a line by itself */
698 ps.want_blank = false;
701 case semicolon: /* got a ';' */
702 ps.in_or_st = false;/* we are not in an initialization or
703 * structure declaration */
704 scase = false; /* these will only need resetting in an error */
706 if (ps.last_token == rparen && rparen_count == 0)
707 ps.in_parameter_declaration = 0;
711 ps.block_init_level = 0;
714 if (ps.in_decl && s_code == e_code && !ps.block_init)
715 while ((e_code - s_code) < (dec_ind - 1)) {
720 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
721 * structure declaration, we
724 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
727 * This should be true iff there were unbalanced parens in the
728 * stmt. It is a bit complicated, because the semicolon might
731 diag2(1, "Unbalanced parens");
733 if (sp_sw) { /* this is a check for an if, while, etc. with
734 * unbalanced parens */
736 parse(hd_type); /* dont lose the if, or whatever */
740 ps.want_blank = true;
741 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
742 * middle of a stmt */
744 if (!sp_sw) { /* if not if for (;;) */
745 parse(semicolon); /* let parser know about end of stmt */
746 force_nl = true;/* force newline after an end of stmt */
750 case lbrace: /* got a '{' */
751 ps.in_stmt = false; /* dont indent the {} */
753 force_nl = true;/* force other stuff on same line as '{' onto
755 else if (ps.block_init_level <= 0)
756 ps.block_init_level = 1;
758 ps.block_init_level++;
760 if (s_code != e_code && !ps.block_init) {
763 ps.want_blank = false;
765 else if (ps.in_parameter_declaration && !ps.in_or_st) {
767 if (function_brace_split) { /* dump the line prior to the
770 ps.want_blank = false;
771 } else /* add a space between the decl and brace */
772 ps.want_blank = true;
775 if (ps.in_parameter_declaration)
776 prefix_blankline_requested = 0;
778 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
780 diag2(1, "Unbalanced parens");
782 if (sp_sw) { /* check for unclosed if, for, etc. */
785 ps.ind_level = ps.i_l_follow;
788 if (s_code == e_code)
789 ps.ind_stmt = false; /* dont put extra indentation on line
791 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
792 * declaration or an init */
793 di_stack[ps.dec_nest++] = dec_ind;
797 ps.decl_on_line = false; /* we can't be in the middle of
798 * a declaration, so don't do
799 * special indentation of
801 if (blanklines_after_declarations_at_proctop
802 && ps.in_parameter_declaration)
803 postfix_blankline_requested = 1;
804 ps.in_parameter_declaration = 0;
807 parse(lbrace); /* let parser know about this */
808 if (ps.want_blank) /* put a blank before '{' if '{' is not at
811 ps.want_blank = false;
813 ps.just_saw_decl = 0;
816 case rbrace: /* got a '}' */
817 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
821 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
822 diag2(1, "Unbalanced parens");
826 ps.just_saw_decl = 0;
827 ps.block_init_level--;
828 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
831 diag2(0, "Line broken");
835 ps.want_blank = true;
836 ps.in_stmt = ps.ind_stmt = false;
837 if (ps.dec_nest > 0) { /* we are in multi-level structure
839 dec_ind = di_stack[--ps.dec_nest];
840 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
841 ps.just_saw_decl = 2;
844 prefix_blankline_requested = 0;
845 parse(rbrace); /* let parser know about this */
846 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
847 && ps.il[ps.tos] >= ps.ind_level;
848 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
849 postfix_blankline_requested = 1;
852 case swstmt: /* got keyword "switch" */
854 hd_type = swstmt; /* keep this for when we have seen the
856 goto copy_id; /* go move the token into buffer */
858 case sp_paren: /* token is if, while, for */
859 sp_sw = true; /* the interesting stuff is done after the
860 * expression is scanned */
861 hd_type = (*token == 'i' ? ifstmt :
862 (*token == 'w' ? whilestmt : forstmt));
865 * remember the type of header for later use by parser
867 goto copy_id; /* copy the token into line */
869 case sp_nparen: /* got else, do */
872 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
874 diag2(0, "Line broken");
875 dump_line();/* make sure this starts a line */
876 ps.want_blank = false;
878 force_nl = true;/* also, following stuff must go onto new line */
883 if (e_code != s_code) { /* make sure this starts a line */
885 diag2(0, "Line broken");
887 ps.want_blank = false;
889 force_nl = true;/* also, following stuff must go onto new line */
893 goto copy_id; /* move the token into line */
895 case decl: /* we have a declaration type (int, register,
897 parse(decl); /* let parser worry about indentation */
898 if (ps.last_token == rparen && ps.tos <= 1) {
899 ps.in_parameter_declaration = 1;
900 if (s_code != e_code) {
905 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
906 ps.ind_level = ps.i_l_follow = 1;
909 ps.in_or_st = true; /* this might be a structure or initialization
911 ps.in_decl = ps.decl_on_line = true;
912 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
913 ps.just_saw_decl = 2;
914 prefix_blankline_requested = 0;
915 for (i = 0; token[i++];); /* get length of token */
917 if (ps.ind_level == 0 || ps.dec_nest > 0) {
918 /* global variable or struct member in local variable */
919 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
920 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
923 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
924 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
928 case ident: /* got an identifier or constant */
929 if (ps.in_decl) { /* if we are in a declaration, we must indent
931 if (is_procname == 0 || !procnames_start_line) {
932 if (!ps.block_init) {
933 if (troff && !ps.dumped_decl_indent) {
936 ps.want_blank = false;
937 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
938 ps.dumped_decl_indent = 1;
939 e_code += strlen(e_code);
945 * in order to get the tab math right for
946 * indentations that are not multiples of 8 we
947 * need to modify both startpos and dec_ind
948 * (cur_dec_ind) here by eight minus the
949 * remainder of the current starting column
950 * divided by eight. This seems to be a
951 * properly working fix
953 startpos = e_code - s_code;
954 cur_dec_ind = dec_ind;
956 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
957 pos += (ps.ind_level * ps.ind_size) % 8;
958 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
962 while ((pos & ~7) + 8 <= cur_dec_ind) {
965 pos = (pos & ~7) + 8;
968 while (pos < cur_dec_ind) {
973 if (ps.want_blank && e_code - s_code == startpos)
975 ps.want_blank = false;
981 ps.want_blank = false;
982 if (dec_ind && s_code != e_code)
987 else if (sp_sw && ps.p_l_follow == 0) {
997 if (troff && ps.its_a_keyword) {
998 e_code = chfont(&bodyf, &keywordf, e_code);
999 for (t_ptr = token; *t_ptr; ++t_ptr) {
1001 *e_code++ = keywordf.allcaps && islower(*t_ptr)
1002 ? toupper(*t_ptr) : *t_ptr;
1004 e_code = chfont(&keywordf, &bodyf, e_code);
1007 for (t_ptr = token; *t_ptr; ++t_ptr) {
1011 ps.want_blank = true;
1014 case period: /* treat a period kind of like a binary
1016 *e_code++ = '.'; /* move the period into line */
1017 ps.want_blank = false; /* dont put a blank after a period */
1021 ps.want_blank = (s_code != e_code); /* only put blank after comma
1022 * if comma does not start the
1024 if (ps.in_decl && is_procname == 0 && !ps.block_init)
1025 while ((e_code - s_code) < (dec_ind - 1)) {
1031 if (ps.p_l_follow == 0) {
1032 if (ps.block_init_level <= 0)
1034 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1039 case preesc: /* got the character '#' */
1040 if ((s_com != e_com) ||
1044 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1051 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1053 if (buf_ptr >= buf_end)
1056 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1058 *e_lab = *buf_ptr++;
1059 if (buf_ptr >= buf_end)
1064 *e_lab++ = BACKSLASH;
1066 *e_lab++ = *buf_ptr++;
1067 if (buf_ptr >= buf_end)
1072 if (*buf_ptr == '*' && !in_comment && !quote) {
1074 *e_lab++ = *buf_ptr++;
1075 com_start = e_lab - s_lab - 2;
1087 if (*buf_ptr == '/' && in_comment) {
1089 *e_lab++ = *buf_ptr++;
1090 com_end = e_lab - s_lab;
1096 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1098 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on
1099 * preprocessor line */
1100 if (sc_end == 0) /* if this is the first comment, we
1101 * must set up the buffer */
1102 sc_end = &(save_com[0]);
1104 *sc_end++ = '\n'; /* add newline between
1109 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1110 sc_end += com_end - com_start;
1111 if (sc_end >= &save_com[sc_size])
1113 e_lab = s_lab + com_start;
1114 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1116 bp_save = buf_ptr; /* save current input buffer */
1118 buf_ptr = save_com; /* fix so that subsequent calls to
1119 * lexi will take tokens out of
1121 *sc_end++ = ' '; /* add trailing blank, just in case */
1125 *e_lab = '\0'; /* null terminate line */
1129 if (strncmp(s_lab, "#if", 3) == 0) {
1130 if (blanklines_around_conditional_compilation) {
1132 prefix_blankline_requested++;
1133 while ((c = getc(input)) == '\n');
1136 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1137 match_state[ifdef_level].tos = -1;
1138 state_stack[ifdef_level++] = ps;
1141 diag2(1, "#if stack overflow");
1143 else if (strncmp(s_lab, "#else", 5) == 0)
1144 if (ifdef_level <= 0)
1145 diag2(1, "Unmatched #else");
1147 match_state[ifdef_level - 1] = ps;
1148 ps = state_stack[ifdef_level - 1];
1150 else if (strncmp(s_lab, "#endif", 6) == 0) {
1151 if (ifdef_level <= 0)
1152 diag2(1, "Unmatched #endif");
1158 * This match needs to be more intelligent before the
1161 if (match_state[ifdef_level].tos >= 0
1162 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1163 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1166 if (blanklines_around_conditional_compilation) {
1167 postfix_blankline_requested++;
1168 n_real_blanklines = 0;
1171 break; /* subsequent processing of the newline
1172 * character will cause the line to be printed */
1174 case comment: /* we have gotten a / followed by * this is a biggie */
1175 if (flushed_nl) { /* we should force a broken line here */
1178 ps.want_blank = false; /* dont insert blank at line start */
1183 } /* end of big switch stmt */
1185 *e_code = '\0'; /* make sure code section is null terminated */
1186 if (type_code != comment && type_code != newline && type_code != preesc)
1187 ps.last_token = type_code;
1188 } /* end of main while (1) loop */
1192 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1193 * backup file will be ".Bfile" then make the backup file the input and
1194 * original input file the output
1201 char buff[8 * 1024];
1204 /* construct file name .Bfile */
1205 for (p = in_name; *p; p++); /* skip to end of string */
1206 while (p > in_name && *p != '/') /* find last '/' */
1210 sprintf(bakfile, "%s.BAK", p);
1212 /* copy in_name to backup file */
1213 bakchn = creat(bakfile, 0600);
1215 err(1, "%s", bakfile);
1216 while ((n = read(fileno(input), buff, sizeof buff)) != 0)
1217 if (write(bakchn, buff, n) != n)
1218 err(1, "%s", bakfile);
1220 err(1, "%s", in_name);
1224 /* re-open backup file as the input file */
1225 input = fopen(bakfile, "r");
1227 err(1, "%s", bakfile);
1228 /* now the original input file will be the output */
1229 output = fopen(in_name, "w");
1230 if (output == NULL) {
1232 err(1, "%s", in_name);