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;
156 /*--------------------------------------------------*\
157 | COMMAND LINE SCAN |
158 \*--------------------------------------------------*/
161 max_col = 78; /* -l78 */
162 lineup_to_parens = 1; /* -lp */
163 ps.ljust_decl = 0; /* -ndj */
164 ps.com_ind = 33; /* -c33 */
165 star_comment_cont = 1; /* -sc */
166 ps.ind_size = 8; /* -i8 */
168 ps.decl_indent = 16; /* -di16 */
169 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
170 * by an arg, we will set this equal to
172 ps.indent_parameters = 1; /* -ip */
173 ps.decl_com_ind = 0; /* if this is not set to some positive value
174 * by an arg, we will set this equal to
176 btype_2 = 1; /* -br */
177 cuddle_else = 1; /* -ce */
178 ps.unindent_displace = 0; /* -d0 */
179 ps.case_indent = 0; /* -cli0 */
180 format_block_comments = 1; /* -fcb */
181 format_col1_comments = 1; /* -fc1 */
182 procnames_start_line = 1; /* -psl */
183 proc_calls_space = 0; /* -npcs */
184 comment_delimiter_on_blankline = 1; /* -cdb */
185 ps.leave_comma = 1; /* -nbc */
188 for (i = 1; i < argc; ++i)
189 if (strcmp(argv[i], "-npro") == 0)
195 for (i = 1; i < argc; ++i) {
198 * look thru args (if any) for changes to defaults
200 if (argv[i][0] != '-') {/* no flag on parameter */
201 if (input == 0) { /* we must have the input file */
202 in_name = argv[i]; /* remember name of input file */
203 input = fopen(in_name, "r");
204 if (input == 0) /* check for open error */
205 err(1, "%s", in_name);
208 else if (output == 0) { /* we have the output file */
209 out_name = argv[i]; /* remember name of output file */
210 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
212 errx(1, "input and output files must be different");
214 output = fopen(out_name, "w");
215 if (output == 0) /* check for create error */
216 err(1, "%s", out_name);
219 errx(1, "unknown parameter: %s", argv[i]);
227 if (troff || input == stdin)
235 ps.com_ind = 2; /* dont put normal comments before column 2 */
237 if (bodyf.font[0] == 0)
238 parsefont(&bodyf, "R");
239 if (scomf.font[0] == 0)
240 parsefont(&scomf, "I");
241 if (blkcomf.font[0] == 0)
242 blkcomf = scomf, blkcomf.size += 2;
243 if (boxcomf.font[0] == 0)
245 if (stringf.font[0] == 0)
246 parsefont(&stringf, "L");
247 if (keywordf.font[0] == 0)
248 parsefont(&keywordf, "B");
249 writefdef(&bodyf, 'B');
250 writefdef(&scomf, 'C');
251 writefdef(&blkcomf, 'L');
252 writefdef(&boxcomf, 'X');
253 writefdef(&stringf, 'S');
254 writefdef(&keywordf, 'K');
256 if (block_comment_max_col <= 0)
257 block_comment_max_col = max_col;
258 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
259 ps.local_decl_indent = ps.decl_indent;
260 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
261 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
262 if (continuation_indent == 0)
263 continuation_indent = ps.ind_size;
264 fill_buffer(); /* get first batch of stuff into input buffer */
275 col = ((col - 1) & ~7) + 9;
280 if (col > ps.ind_size)
281 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
284 const char *p = in_name,
290 fprintf(output, ".Fn \"%s\"\n", beg);
296 while (1) { /* this is the main loop. it will go until we
300 type_code = lexi(); /* lexi reads one token. The actual
301 * characters read are stored in "token". lexi
302 * returns a code indicating the type of token */
303 is_procname = ps.procname[0];
306 * The following code moves everything following an if (), while (),
307 * else, etc. up to the start of the following stmt to a buffer. This
308 * allows proper handling of both kinds of brace placement.
312 while (ps.search_brace) { /* if we scanned an if(), while(),
313 * etc., we might need to copy stuff
314 * into a buffer we must loop, copying
315 * stuff into save_com, until we find
316 * the start of the stmt which follows
317 * the if, or whatever */
323 break; /* form feeds and newlines found here will be
326 case lbrace: /* this is a brace that starts the compound
328 if (sc_end == 0) { /* ignore buffering if a comment wasnt
330 ps.search_brace = false;
334 save_com[0] = '{'; /* we either want to put the brace
335 * right after the if */
336 goto sw_buffer; /* go to common code to get out of
339 case comment: /* we have a comment, so we must copy it into
341 if (!flushed_nl || sc_end != 0) {
342 if (sc_end == 0) { /* if this is the first comment, we
343 * must set up the buffer */
344 save_com[0] = save_com[1] = ' ';
345 sc_end = &(save_com[2]);
348 *sc_end++ = '\n'; /* add newline between
353 *sc_end++ = '/'; /* copy in start of comment */
356 for (;;) { /* loop until we get to the end of the comment */
357 *sc_end = *buf_ptr++;
358 if (buf_ptr >= buf_end)
361 if (*sc_end++ == '*' && *buf_ptr == '/')
362 break; /* we are at end of comment */
364 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
366 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
371 *sc_end++ = '/'; /* add ending slash */
372 if (++buf_ptr >= buf_end) /* get past / in buffer */
376 default: /* it is the start of a normal statement */
377 if (flushed_nl) /* if we flushed a newline, make sure it is
380 if ((type_code == sp_paren && *token == 'i'
381 && last_else && ps.else_if)
382 || (type_code == sp_nparen && *token == 'e'
383 && e_code != s_code && e_code[-1] == '}'))
386 if (sc_end == 0) { /* ignore buffering if comment wasnt
388 ps.search_brace = false;
391 if (force_nl) { /* if we should insert a nl here, put it into
394 --line_no; /* this will be re-increased when the nl is
395 * read from the buffer */
398 if (verbose && !flushed_nl) /* print error msg if the line
399 * was not already broken */
400 diag2(0, "Line broken");
403 for (t_ptr = token; *t_ptr; ++t_ptr)
404 *sc_end++ = *t_ptr; /* copy token into temp buffer */
408 ps.search_brace = false; /* stop looking for start of
410 bp_save = buf_ptr; /* save current input buffer */
412 buf_ptr = save_com; /* fix so that subsequent calls to
413 * lexi will take tokens out of
415 *sc_end++ = ' ';/* add trailing blank, just in case */
419 } /* end of switch */
420 if (type_code != 0) /* we must make this check, just in case there
421 * was an unexpected EOF */
422 type_code = lexi(); /* read another token */
423 /* if (ps.search_brace) ps.procname[0] = 0; */
424 if ((is_procname = ps.procname[0]) && flushed_nl
425 && !procnames_start_line && ps.in_decl
426 && type_code == ident)
428 } /* end of while (search_brace) */
431 if (type_code == 0) { /* we got eof */
432 if (s_lab != e_lab || s_code != e_code
433 || s_com != e_com) /* must dump end of line */
435 if (ps.tos > 1) /* check for balanced braces */
436 diag2(1, "Stuff missing from end of file");
439 printf("There were %d output lines and %d comments\n",
440 ps.out_lines, ps.out_coms);
441 printf("(Lines with comments)/(Lines with code): %6.3f\n",
442 (1.0 * ps.com_lines) / code_lines);
448 (type_code != comment) &&
449 (type_code != newline) &&
450 (type_code != preesc) &&
451 (type_code != form_feed)) {
453 (type_code != semicolon) &&
454 (type_code != lbrace || !btype_2)) {
455 /* we should force a broken line here */
456 if (verbose && !flushed_nl)
457 diag2(0, "Line broken");
460 ps.want_blank = false; /* dont insert blank at line start */
463 ps.in_stmt = true; /* turn on flag which causes an extra level of
464 * indentation. this is turned off by a ; or
466 if (s_com != e_com) { /* the turkey has embedded a comment
467 * in a line. fix it */
469 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
474 *e_code = '\0'; /* null terminate code sect */
475 ps.want_blank = false;
479 else if (type_code != comment) /* preserve force_nl thru a comment */
480 force_nl = false; /* cancel forced newline after newline, form
485 /*-----------------------------------------------------*\
486 | do switch on type of token scanned |
487 \*-----------------------------------------------------*/
489 switch (type_code) { /* now, decide what to do with the token */
491 case form_feed: /* found a form feed in line */
492 ps.use_ff = true; /* a form feed is treated much like a newline */
494 ps.want_blank = false;
498 if (ps.last_token != comma || ps.p_l_follow > 0
499 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
501 ps.want_blank = false;
503 ++line_no; /* keep track of input line number */
506 case lparen: /* got a '(' or '[' */
507 ++ps.p_l_follow; /* count parens to make Healy happy */
508 if (ps.want_blank && *token != '[' &&
509 (ps.last_token != ident || proc_calls_space
510 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
512 if (ps.in_decl && !ps.block_init)
513 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
514 ps.dumped_decl_indent = 1;
515 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
516 e_code += strlen(e_code);
519 while ((e_code - s_code) < dec_ind) {
523 *e_code++ = token[0];
526 *e_code++ = token[0];
527 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
528 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
529 && ps.paren_indents[0] < 2 * ps.ind_size)
530 ps.paren_indents[0] = 2 * ps.ind_size;
531 ps.want_blank = false;
532 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
534 * this is a kluge to make sure that declarations will be
535 * aligned right if proc decl has an explicit type on it, i.e.
538 parse(semicolon); /* I said this was a kluge... */
539 ps.in_or_st = false; /* turn off flag for structure decl or
542 if (ps.sizeof_keyword)
543 ps.sizeof_mask |= 1 << ps.p_l_follow;
546 case rparen: /* got a ')' or ']' */
548 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
550 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
551 ps.want_blank = false;
553 ps.want_blank = true;
554 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
555 if (--ps.p_l_follow < 0) {
557 diag3(0, "Extra %c", *token);
559 if (e_code == s_code) /* if the paren starts the line */
560 ps.paren_level = ps.p_l_follow; /* then indent it */
562 *e_code++ = token[0];
564 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
565 * (...), or some such */
567 force_nl = true;/* must force newline after if */
568 ps.last_u_d = true; /* inform lexi that a following
569 * operator is unary */
570 ps.in_stmt = false; /* dont use stmt continuation
573 parse(hd_type); /* let parser worry about if, or whatever */
575 ps.search_brace = btype_2; /* this should insure that constructs
576 * such as main(){...} and int[]{...}
577 * have their braces put in the right
581 case unary_op: /* this could be any unary operation */
585 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
586 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
587 ps.dumped_decl_indent = 1;
588 e_code += strlen(e_code);
591 const char *res = token;
593 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
594 * in a declaration, we
597 for (i = 0; token[i]; ++i); /* find length of token */
598 while ((e_code - s_code) < (dec_ind - i)) {
600 *e_code++ = ' '; /* pad it */
603 if (troff && token[0] == '-' && token[1] == '>')
605 for (t_ptr = res; *t_ptr; ++t_ptr) {
610 ps.want_blank = false;
613 case binary_op: /* any binary operation */
617 const char *res = token;
636 else if (token[1] == 0)
640 for (t_ptr = res; *t_ptr; ++t_ptr) {
642 *e_code++ = *t_ptr; /* move the operator */
645 ps.want_blank = true;
648 case postop: /* got a trailing ++ or -- */
649 *e_code++ = token[0];
650 *e_code++ = token[1];
651 ps.want_blank = true;
654 case question: /* got a ? */
655 squest++; /* this will be used when a later colon
656 * appears so we can distinguish the
657 * <c>?<n>:<n> construct */
661 ps.want_blank = true;
664 case casestmt: /* got word 'case' or 'default' */
665 scase = true; /* so we can process the later colon properly */
668 case colon: /* got a ':' */
669 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
674 ps.want_blank = true;
679 ps.want_blank = false;
682 ps.in_stmt = false; /* seeing a label does not imply we are in a
684 for (t_ptr = s_code; *t_ptr; ++t_ptr)
685 *e_lab++ = *t_ptr; /* turn everything so far into a label */
691 force_nl = ps.pcase = scase; /* ps.pcase will be used by
692 * dump_line to decide how to
693 * indent the label. force_nl
694 * will force a case n: to be
695 * on a line by itself */
697 ps.want_blank = false;
700 case semicolon: /* got a ';' */
701 ps.in_or_st = false;/* we are not in an initialization or
702 * structure declaration */
703 scase = false; /* these will only need resetting in an error */
705 if (ps.last_token == rparen && rparen_count == 0)
706 ps.in_parameter_declaration = 0;
710 ps.block_init_level = 0;
713 if (ps.in_decl && s_code == e_code && !ps.block_init)
714 while ((e_code - s_code) < (dec_ind - 1)) {
719 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
720 * structure declaration, we
723 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
726 * This should be true iff there were unbalanced parens in the
727 * stmt. It is a bit complicated, because the semicolon might
730 diag2(1, "Unbalanced parens");
732 if (sp_sw) { /* this is a check for an if, while, etc. with
733 * unbalanced parens */
735 parse(hd_type); /* dont lose the if, or whatever */
739 ps.want_blank = true;
740 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
741 * middle of a stmt */
743 if (!sp_sw) { /* if not if for (;;) */
744 parse(semicolon); /* let parser know about end of stmt */
745 force_nl = true;/* force newline after an end of stmt */
749 case lbrace: /* got a '{' */
750 ps.in_stmt = false; /* dont indent the {} */
752 force_nl = true;/* force other stuff on same line as '{' onto
754 else if (ps.block_init_level <= 0)
755 ps.block_init_level = 1;
757 ps.block_init_level++;
759 if (s_code != e_code && !ps.block_init) {
762 ps.want_blank = false;
764 else if (ps.in_parameter_declaration && !ps.in_or_st) {
766 if (function_brace_split) { /* dump the line prior to the
769 ps.want_blank = false;
770 } else /* add a space between the decl and brace */
771 ps.want_blank = true;
774 if (ps.in_parameter_declaration)
775 prefix_blankline_requested = 0;
777 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
779 diag2(1, "Unbalanced parens");
781 if (sp_sw) { /* check for unclosed if, for, etc. */
784 ps.ind_level = ps.i_l_follow;
787 if (s_code == e_code)
788 ps.ind_stmt = false; /* dont put extra indentation on line
790 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
791 * declaration or an init */
792 di_stack[ps.dec_nest++] = dec_ind;
796 ps.decl_on_line = false; /* we cant be in the middle of
797 * a declaration, so dont do
798 * special indentation of
800 if (blanklines_after_declarations_at_proctop
801 && ps.in_parameter_declaration)
802 postfix_blankline_requested = 1;
803 ps.in_parameter_declaration = 0;
806 parse(lbrace); /* let parser know about this */
807 if (ps.want_blank) /* put a blank before '{' if '{' is not at
810 ps.want_blank = false;
812 ps.just_saw_decl = 0;
815 case rbrace: /* got a '}' */
816 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
820 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
821 diag2(1, "Unbalanced parens");
825 ps.just_saw_decl = 0;
826 ps.block_init_level--;
827 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
830 diag2(0, "Line broken");
834 ps.want_blank = true;
835 ps.in_stmt = ps.ind_stmt = false;
836 if (ps.dec_nest > 0) { /* we are in multi-level structure
838 dec_ind = di_stack[--ps.dec_nest];
839 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
840 ps.just_saw_decl = 2;
843 prefix_blankline_requested = 0;
844 parse(rbrace); /* let parser know about this */
845 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
846 && ps.il[ps.tos] >= ps.ind_level;
847 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
848 postfix_blankline_requested = 1;
851 case swstmt: /* got keyword "switch" */
853 hd_type = swstmt; /* keep this for when we have seen the
855 goto copy_id; /* go move the token into buffer */
857 case sp_paren: /* token is if, while, for */
858 sp_sw = true; /* the interesting stuff is done after the
859 * expression is scanned */
860 hd_type = (*token == 'i' ? ifstmt :
861 (*token == 'w' ? whilestmt : forstmt));
864 * remember the type of header for later use by parser
866 goto copy_id; /* copy the token into line */
868 case sp_nparen: /* got else, do */
871 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
873 diag2(0, "Line broken");
874 dump_line();/* make sure this starts a line */
875 ps.want_blank = false;
877 force_nl = true;/* also, following stuff must go onto new line */
882 if (e_code != s_code) { /* make sure this starts a line */
884 diag2(0, "Line broken");
886 ps.want_blank = false;
888 force_nl = true;/* also, following stuff must go onto new line */
892 goto copy_id; /* move the token into line */
894 case decl: /* we have a declaration type (int, register,
896 parse(decl); /* let parser worry about indentation */
897 if (ps.last_token == rparen && ps.tos <= 1) {
898 ps.in_parameter_declaration = 1;
899 if (s_code != e_code) {
904 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
905 ps.ind_level = ps.i_l_follow = 1;
908 ps.in_or_st = true; /* this might be a structure or initialization
910 ps.in_decl = ps.decl_on_line = true;
911 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
912 ps.just_saw_decl = 2;
913 prefix_blankline_requested = 0;
914 for (i = 0; token[i++];); /* get length of token */
916 if (ps.ind_level == 0 || ps.dec_nest > 0) {
917 /* global variable or struct member in local variable */
918 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
919 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
922 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
923 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
927 case ident: /* got an identifier or constant */
928 if (ps.in_decl) { /* if we are in a declaration, we must indent
930 if (is_procname == 0 || !procnames_start_line) {
931 if (!ps.block_init) {
932 if (troff && !ps.dumped_decl_indent) {
935 ps.want_blank = false;
936 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
937 ps.dumped_decl_indent = 1;
938 e_code += strlen(e_code);
944 * in order to get the tab math right for
945 * indentations that are not multiples of 8 we
946 * need to modify both startpos and dec_ind
947 * (cur_dec_ind) here by eight minus the
948 * remainder of the current starting column
949 * divided by eight. This seems to be a
950 * properly working fix
952 startpos = e_code - s_code;
953 cur_dec_ind = dec_ind;
955 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
956 pos += (ps.ind_level * ps.ind_size) % 8;
957 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
961 while ((pos & ~7) + 8 <= cur_dec_ind) {
964 pos = (pos & ~7) + 8;
967 while (pos < cur_dec_ind) {
972 if (ps.want_blank && e_code - s_code == startpos)
974 ps.want_blank = false;
980 ps.want_blank = false;
981 if (dec_ind && s_code != e_code)
986 else if (sp_sw && ps.p_l_follow == 0) {
996 if (troff && ps.its_a_keyword) {
997 e_code = chfont(&bodyf, &keywordf, e_code);
998 for (t_ptr = token; *t_ptr; ++t_ptr) {
1000 *e_code++ = keywordf.allcaps && islower(*t_ptr)
1001 ? toupper(*t_ptr) : *t_ptr;
1003 e_code = chfont(&keywordf, &bodyf, e_code);
1006 for (t_ptr = token; *t_ptr; ++t_ptr) {
1010 ps.want_blank = true;
1013 case period: /* treat a period kind of like a binary
1015 *e_code++ = '.'; /* move the period into line */
1016 ps.want_blank = false; /* dont put a blank after a period */
1020 ps.want_blank = (s_code != e_code); /* only put blank after comma
1021 * if comma does not start the
1023 if (ps.in_decl && is_procname == 0 && !ps.block_init)
1024 while ((e_code - s_code) < (dec_ind - 1)) {
1030 if (ps.p_l_follow == 0) {
1031 if (ps.block_init_level <= 0)
1033 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1038 case preesc: /* got the character '#' */
1039 if ((s_com != e_com) ||
1043 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1050 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1052 if (buf_ptr >= buf_end)
1055 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1057 *e_lab = *buf_ptr++;
1058 if (buf_ptr >= buf_end)
1063 *e_lab++ = BACKSLASH;
1065 *e_lab++ = *buf_ptr++;
1066 if (buf_ptr >= buf_end)
1071 if (*buf_ptr == '*' && !in_comment && !quote) {
1073 *e_lab++ = *buf_ptr++;
1074 com_start = e_lab - s_lab - 2;
1086 if (*buf_ptr == '/' && in_comment) {
1088 *e_lab++ = *buf_ptr++;
1089 com_end = e_lab - s_lab;
1095 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1097 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on
1098 * preprocessor line */
1099 if (sc_end == 0) /* if this is the first comment, we
1100 * must set up the buffer */
1101 sc_end = &(save_com[0]);
1103 *sc_end++ = '\n'; /* add newline between
1108 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1109 sc_end += com_end - com_start;
1110 if (sc_end >= &save_com[sc_size])
1112 e_lab = s_lab + com_start;
1113 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1115 bp_save = buf_ptr; /* save current input buffer */
1117 buf_ptr = save_com; /* fix so that subsequent calls to
1118 * lexi will take tokens out of
1120 *sc_end++ = ' '; /* add trailing blank, just in case */
1124 *e_lab = '\0'; /* null terminate line */
1128 if (strncmp(s_lab, "#if", 3) == 0) {
1129 if (blanklines_around_conditional_compilation) {
1131 prefix_blankline_requested++;
1132 while ((c = getc(input)) == '\n');
1135 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1136 match_state[ifdef_level].tos = -1;
1137 state_stack[ifdef_level++] = ps;
1140 diag2(1, "#if stack overflow");
1142 else if (strncmp(s_lab, "#else", 5) == 0)
1143 if (ifdef_level <= 0)
1144 diag2(1, "Unmatched #else");
1146 match_state[ifdef_level - 1] = ps;
1147 ps = state_stack[ifdef_level - 1];
1149 else if (strncmp(s_lab, "#endif", 6) == 0) {
1150 if (ifdef_level <= 0)
1151 diag2(1, "Unmatched #endif");
1157 * This match needs to be more intelligent before the
1160 if (match_state[ifdef_level].tos >= 0
1161 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1162 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1165 if (blanklines_around_conditional_compilation) {
1166 postfix_blankline_requested++;
1167 n_real_blanklines = 0;
1170 break; /* subsequent processing of the newline
1171 * character will cause the line to be printed */
1173 case comment: /* we have gotten a / followed by * this is a biggie */
1174 if (flushed_nl) { /* we should force a broken line here */
1177 ps.want_blank = false; /* dont insert blank at line start */
1182 } /* end of big switch stmt */
1184 *e_code = '\0'; /* make sure code section is null terminated */
1185 if (type_code != comment && type_code != newline && type_code != preesc)
1186 ps.last_token = type_code;
1187 } /* end of main while (1) loop */
1191 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1192 * backup file will be ".Bfile" then make the backup file the input and
1193 * original input file the output
1200 char buff[8 * 1024];
1203 /* construct file name .Bfile */
1204 for (p = in_name; *p; p++); /* skip to end of string */
1205 while (p > in_name && *p != '/') /* find last '/' */
1209 sprintf(bakfile, "%s.BAK", p);
1211 /* copy in_name to backup file */
1212 bakchn = creat(bakfile, 0600);
1214 err(1, "%s", bakfile);
1215 while ((n = read(fileno(input), buff, sizeof buff)) != 0)
1216 if (write(bakchn, buff, n) != n)
1217 err(1, "%s", bakfile);
1219 err(1, "%s", in_name);
1223 /* re-open backup file as the input file */
1224 input = fopen(bakfile, "r");
1226 err(1, "%s", bakfile);
1227 /* now the original input file will be the output */
1228 output = fopen(in_name, "w");
1231 err(1, "%s", in_name);