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";
48 static const char rcsid[] =
49 "$FreeBSD: src/usr.bin/indent/indent.c,v 1.5.2.6 2001/12/06 19:28:47 schweikh Exp $";
52 #include <sys/param.h>
60 #include "indent_globs.h"
61 #include "indent_codes.h"
64 static void bakcopy(void);
66 char *in_name = "Standard Input"; /* will always point to name of input
68 char *out_name = "Standard Output"; /* will always point to name
70 char bakfile[MAXPATHLEN] = "";
73 main(int argc, char **argv)
76 extern int found_err; /* flag set in diagN() on error */
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 register 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 expressin 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 register char *t_ptr; /* used for copying tokens */
93 int type_code; /* the type of token, returned by lexi */
95 int last_else = 0; /* true iff last keyword was an else */
98 /*-----------------------------------------------*\
100 \*-----------------------------------------------*/
103 ps.p_stack[0] = stmt; /* this is the parser's stack */
104 ps.last_nl = true; /* this is true if the last thing scanned was
106 ps.last_token = semicolon;
107 combuf = (char *) malloc(bufsize);
108 labbuf = (char *) malloc(bufsize);
109 codebuf = (char *) malloc(bufsize);
110 tokenbuf = (char *) malloc(bufsize);
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 in_buffer_limit = in_buffer + 8;
126 buf_ptr = buf_end = in_buffer;
128 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
129 sp_sw = force_nl = false;
133 di_stack[ps.dec_nest = 0] = 0;
134 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
137 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.indent_parameters = 1; /* -ip */
161 ps.decl_com_ind = 0; /* if this is not set to some positive value
162 * by an arg, we will set this equal to
164 btype_2 = 1; /* -br */
165 cuddle_else = 1; /* -ce */
166 ps.unindent_displace = 0; /* -d0 */
167 ps.case_indent = 0; /* -cli0 */
168 format_block_comments = 1; /* -fcb */
169 format_col1_comments = 1; /* -fc1 */
170 procnames_start_line = 1; /* -psl */
171 proc_calls_space = 0; /* -npcs */
172 comment_delimiter_on_blankline = 1; /* -cdb */
173 ps.leave_comma = 1; /* -nbc */
176 for (i = 1; i < argc; ++i)
177 if (strcmp(argv[i], "-npro") == 0)
183 for (i = 1; i < argc; ++i) {
186 * look thru args (if any) for changes to defaults
188 if (argv[i][0] != '-') {/* no flag on parameter */
189 if (input == 0) { /* we must have the input file */
190 in_name = argv[i]; /* remember name of input file */
191 input = fopen(in_name, "r");
192 if (input == 0) /* check for open error */
193 err(1, "%s", in_name);
196 else if (output == 0) { /* we have the output file */
197 out_name = argv[i]; /* remember name of output file */
198 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
200 errx(1, "input and output files must be different");
202 output = fopen(out_name, "w");
203 if (output == 0) /* check for create error */
204 err(1, "%s", out_name);
207 errx(1, "unknown parameter: %s", argv[i]);
215 if (troff || input == stdin)
223 ps.com_ind = 2; /* dont put normal comments before column 2 */
225 if (bodyf.font[0] == 0)
226 parsefont(&bodyf, "R");
227 if (scomf.font[0] == 0)
228 parsefont(&scomf, "I");
229 if (blkcomf.font[0] == 0)
230 blkcomf = scomf, blkcomf.size += 2;
231 if (boxcomf.font[0] == 0)
233 if (stringf.font[0] == 0)
234 parsefont(&stringf, "L");
235 if (keywordf.font[0] == 0)
236 parsefont(&keywordf, "B");
237 writefdef(&bodyf, 'B');
238 writefdef(&scomf, 'C');
239 writefdef(&blkcomf, 'L');
240 writefdef(&boxcomf, 'X');
241 writefdef(&stringf, 'S');
242 writefdef(&keywordf, 'K');
244 if (block_comment_max_col <= 0)
245 block_comment_max_col = max_col;
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 */
254 register char *p = buf_ptr;
255 register int col = 1;
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 register 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 == 0) { /* ignore buffering if a comment wasnt
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
325 case comment: /* we have a comment, so we must copy it into
327 if (!flushed_nl || sc_end != 0) {
328 if (sc_end == 0) { /* if this is the first comment, we
329 * must set up the buffer */
330 save_com[0] = save_com[1] = ' ';
331 sc_end = &(save_com[2]);
334 *sc_end++ = '\n'; /* add newline between
339 *sc_end++ = '/'; /* copy in start of comment */
342 for (;;) { /* loop until we get to the end of the comment */
343 *sc_end = *buf_ptr++;
344 if (buf_ptr >= buf_end)
347 if (*sc_end++ == '*' && *buf_ptr == '/')
348 break; /* we are at end of comment */
350 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
352 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
357 *sc_end++ = '/'; /* add ending slash */
358 if (++buf_ptr >= buf_end) /* get past / in buffer */
362 default: /* it is the start of a normal statment */
363 if (flushed_nl) /* if we flushed a newline, make sure it is
366 if ((type_code == sp_paren && *token == 'i'
367 && last_else && ps.else_if)
368 || (type_code == sp_nparen && *token == 'e'
369 && e_code != s_code && e_code[-1] == '}'))
372 if (sc_end == 0) { /* ignore buffering if comment wasnt
374 ps.search_brace = false;
377 if (force_nl) { /* if we should insert a nl here, put it into
380 --line_no; /* this will be re-increased when the nl is
381 * read from the buffer */
384 if (verbose && !flushed_nl) /* print error msg if the line
385 * was not already broken */
386 diag2(0, "Line broken");
389 for (t_ptr = token; *t_ptr; ++t_ptr)
390 *sc_end++ = *t_ptr; /* copy token into temp buffer */
394 ps.search_brace = false; /* stop looking for start of
396 bp_save = buf_ptr; /* save current input buffer */
398 buf_ptr = save_com; /* fix so that subsequent calls to
399 * lexi will take tokens out of
401 *sc_end++ = ' ';/* add trailing blank, just in case */
405 } /* end of switch */
406 if (type_code != 0) /* we must make this check, just in case there
407 * was an unexpected EOF */
408 type_code = lexi(); /* read another token */
409 /* if (ps.search_brace) ps.procname[0] = 0; */
410 if ((is_procname = ps.procname[0]) && flushed_nl
411 && !procnames_start_line && ps.in_decl
412 && type_code == ident)
414 } /* end of while (search_brace) */
417 if (type_code == 0) { /* we got eof */
418 if (s_lab != e_lab || s_code != e_code
419 || s_com != e_com) /* must dump end of line */
421 if (ps.tos > 1) /* check for balanced braces */
422 diag2(1, "Stuff missing from end of file.");
425 printf("There were %d output lines and %d comments\n",
426 ps.out_lines, ps.out_coms);
427 printf("(Lines with comments)/(Lines with code): %6.3f\n",
428 (1.0 * ps.com_lines) / code_lines);
434 (type_code != comment) &&
435 (type_code != newline) &&
436 (type_code != preesc) &&
437 (type_code != form_feed)) {
439 (type_code != semicolon) &&
440 (type_code != lbrace || !btype_2)) {
441 /* we should force a broken line here */
442 if (verbose && !flushed_nl)
443 diag2(0, "Line broken");
446 ps.want_blank = false; /* dont insert blank at line start */
449 ps.in_stmt = true; /* turn on flag which causes an extra level of
450 * indentation. this is turned off by a ; or
452 if (s_com != e_com) { /* the turkey has embedded a comment
453 * in a line. fix it */
455 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
460 *e_code = '\0'; /* null terminate code sect */
461 ps.want_blank = false;
465 else if (type_code != comment) /* preserve force_nl thru a comment */
466 force_nl = false; /* cancel forced newline after newline, form
471 /*-----------------------------------------------------*\
472 | do switch on type of token scanned |
473 \*-----------------------------------------------------*/
475 switch (type_code) { /* now, decide what to do with the token */
477 case form_feed: /* found a form feed in line */
478 ps.use_ff = true; /* a form feed is treated much like a newline */
480 ps.want_blank = false;
484 if (ps.last_token != comma || ps.p_l_follow > 0
485 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
487 ps.want_blank = false;
489 ++line_no; /* keep track of input line number */
492 case lparen: /* got a '(' or '[' */
493 ++ps.p_l_follow; /* count parens to make Healy happy */
494 if (ps.want_blank && *token != '[' &&
495 (ps.last_token != ident || proc_calls_space
496 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
498 if (ps.in_decl && !ps.block_init)
499 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
500 ps.dumped_decl_indent = 1;
501 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
502 e_code += strlen(e_code);
505 while ((e_code - s_code) < dec_ind) {
509 *e_code++ = token[0];
512 *e_code++ = token[0];
513 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
514 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
515 && ps.paren_indents[0] < 2 * ps.ind_size)
516 ps.paren_indents[0] = 2 * ps.ind_size;
517 ps.want_blank = false;
518 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
520 * this is a kluge to make sure that declarations will be
521 * aligned right if proc decl has an explicit type on it, i.e.
524 parse(semicolon); /* I said this was a kluge... */
525 ps.in_or_st = false; /* turn off flag for structure decl or
528 if (ps.sizeof_keyword)
529 ps.sizeof_mask |= 1 << ps.p_l_follow;
532 case rparen: /* got a ')' or ']' */
534 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
536 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
537 ps.want_blank = false;
539 ps.want_blank = true;
540 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
541 if (--ps.p_l_follow < 0) {
543 diag3(0, "Extra %c", *token);
545 if (e_code == s_code) /* if the paren starts the line */
546 ps.paren_level = ps.p_l_follow; /* then indent it */
548 *e_code++ = token[0];
550 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
551 * (...), or some such */
553 force_nl = true;/* must force newline after if */
554 ps.last_u_d = true; /* inform lexi that a following
555 * operator is unary */
556 ps.in_stmt = false; /* dont use stmt continuation
559 parse(hd_type); /* let parser worry about if, or whatever */
561 ps.search_brace = btype_2; /* this should insure that constructs
562 * such as main(){...} and int[]{...}
563 * have their braces put in the right
567 case unary_op: /* this could be any unary operation */
571 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
572 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
573 ps.dumped_decl_indent = 1;
574 e_code += strlen(e_code);
579 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
580 * in a declaration, we
583 for (i = 0; token[i]; ++i); /* find length of token */
584 while ((e_code - s_code) < (dec_ind - i)) {
586 *e_code++ = ' '; /* pad it */
589 if (troff && token[0] == '-' && token[1] == '>')
591 for (t_ptr = res; *t_ptr; ++t_ptr) {
596 ps.want_blank = false;
599 case binary_op: /* any binary operation */
622 else if (token[1] == 0)
626 for (t_ptr = res; *t_ptr; ++t_ptr) {
628 *e_code++ = *t_ptr; /* move the operator */
631 ps.want_blank = true;
634 case postop: /* got a trailing ++ or -- */
635 *e_code++ = token[0];
636 *e_code++ = token[1];
637 ps.want_blank = true;
640 case question: /* got a ? */
641 squest++; /* this will be used when a later colon
642 * appears so we can distinguish the
643 * <c>?<n>:<n> construct */
647 ps.want_blank = true;
650 case casestmt: /* got word 'case' or 'default' */
651 scase = true; /* so we can process the later colon properly */
654 case colon: /* got a ':' */
655 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
660 ps.want_blank = true;
665 ps.want_blank = false;
668 ps.in_stmt = false; /* seeing a label does not imply we are in a
670 for (t_ptr = s_code; *t_ptr; ++t_ptr)
671 *e_lab++ = *t_ptr; /* turn everything so far into a label */
677 force_nl = ps.pcase = scase; /* ps.pcase will be used by
678 * dump_line to decide how to
679 * indent the label. force_nl
680 * will force a case n: to be
681 * on a line by itself */
683 ps.want_blank = false;
686 case semicolon: /* got a ';' */
687 ps.in_or_st = false;/* we are not in an initialization or
688 * structure declaration */
689 scase = false; /* these will only need resetting in a error */
691 if (ps.last_token == rparen && rparen_count == 0)
692 ps.in_parameter_declaration = 0;
696 ps.block_init_level = 0;
699 if (ps.in_decl && s_code == e_code && !ps.block_init)
700 while ((e_code - s_code) < (dec_ind - 1)) {
705 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
706 * structure declaration, we
709 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
712 * This should be true iff there were unbalanced parens in the
713 * stmt. It is a bit complicated, because the semicolon might
716 diag2(1, "Unbalanced parens");
718 if (sp_sw) { /* this is a check for a if, while, etc. with
719 * unbalanced parens */
721 parse(hd_type); /* dont lose the if, or whatever */
725 ps.want_blank = true;
726 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
727 * middle of a stmt */
729 if (!sp_sw) { /* if not if for (;;) */
730 parse(semicolon); /* let parser know about end of stmt */
731 force_nl = true;/* force newline after a end of stmt */
735 case lbrace: /* got a '{' */
736 ps.in_stmt = false; /* dont indent the {} */
738 force_nl = true;/* force other stuff on same line as '{' onto
740 else if (ps.block_init_level <= 0)
741 ps.block_init_level = 1;
743 ps.block_init_level++;
745 if (s_code != e_code && !ps.block_init) {
748 ps.want_blank = false;
750 else if (ps.in_parameter_declaration && !ps.in_or_st) {
753 ps.want_blank = false;
756 if (ps.in_parameter_declaration)
757 prefix_blankline_requested = 0;
759 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
761 diag2(1, "Unbalanced parens");
763 if (sp_sw) { /* check for unclosed if, for, etc. */
766 ps.ind_level = ps.i_l_follow;
769 if (s_code == e_code)
770 ps.ind_stmt = false; /* dont put extra indentation on line
772 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
773 * declaration or an init */
774 di_stack[ps.dec_nest++] = dec_ind;
778 ps.decl_on_line = false; /* we cant be in the middle of
779 * a declaration, so dont do
780 * special indentation of
782 if (blanklines_after_declarations_at_proctop
783 && ps.in_parameter_declaration)
784 postfix_blankline_requested = 1;
785 ps.in_parameter_declaration = 0;
788 parse(lbrace); /* let parser know about this */
789 if (ps.want_blank) /* put a blank before '{' if '{' is not at
792 ps.want_blank = false;
794 ps.just_saw_decl = 0;
797 case rbrace: /* got a '}' */
798 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
802 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
803 diag2(1, "Unbalanced parens");
807 ps.just_saw_decl = 0;
808 ps.block_init_level--;
809 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
812 diag2(0, "Line broken");
816 ps.want_blank = true;
817 ps.in_stmt = ps.ind_stmt = false;
818 if (ps.dec_nest > 0) { /* we are in multi-level structure
820 dec_ind = di_stack[--ps.dec_nest];
821 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
822 ps.just_saw_decl = 2;
825 prefix_blankline_requested = 0;
826 parse(rbrace); /* let parser know about this */
827 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
828 && ps.il[ps.tos] >= ps.ind_level;
829 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
830 postfix_blankline_requested = 1;
833 case swstmt: /* got keyword "switch" */
835 hd_type = swstmt; /* keep this for when we have seen the
837 goto copy_id; /* go move the token into buffer */
839 case sp_paren: /* token is if, while, for */
840 sp_sw = true; /* the interesting stuff is done after the
841 * expression is scanned */
842 hd_type = (*token == 'i' ? ifstmt :
843 (*token == 'w' ? whilestmt : forstmt));
846 * remember the type of header for later use by parser
848 goto copy_id; /* copy the token into line */
850 case sp_nparen: /* got else, do */
853 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
855 diag2(0, "Line broken");
856 dump_line();/* make sure this starts a line */
857 ps.want_blank = false;
859 force_nl = true;/* also, following stuff must go onto new line */
864 if (e_code != s_code) { /* make sure this starts a line */
866 diag2(0, "Line broken");
868 ps.want_blank = false;
870 force_nl = true;/* also, following stuff must go onto new line */
874 goto copy_id; /* move the token into line */
876 case decl: /* we have a declaration type (int, register,
878 parse(decl); /* let parser worry about indentation */
879 if (ps.last_token == rparen && ps.tos <= 1) {
880 ps.in_parameter_declaration = 1;
881 if (s_code != e_code) {
886 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
887 ps.ind_level = ps.i_l_follow = 1;
890 ps.in_or_st = true; /* this might be a structure or initialization
892 ps.in_decl = ps.decl_on_line = true;
893 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
894 ps.just_saw_decl = 2;
895 prefix_blankline_requested = 0;
896 for (i = 0; token[i++];); /* get length of token */
899 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
902 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
905 case ident: /* got an identifier or constant */
906 if (ps.in_decl) { /* if we are in a declaration, we must indent
910 ps.want_blank = false;
911 if (is_procname == 0 || !procnames_start_line) {
912 if (!ps.block_init) {
913 if (troff && !ps.dumped_decl_indent) {
914 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
915 ps.dumped_decl_indent = 1;
916 e_code += strlen(e_code);
918 while ((e_code - s_code) < dec_ind) {
925 if (dec_ind && s_code != e_code)
928 ps.want_blank = false;
931 else if (sp_sw && ps.p_l_follow == 0) {
941 if (troff && ps.its_a_keyword) {
942 e_code = chfont(&bodyf, &keywordf, e_code);
943 for (t_ptr = token; *t_ptr; ++t_ptr) {
945 *e_code++ = keywordf.allcaps && islower(*t_ptr)
946 ? toupper(*t_ptr) : *t_ptr;
948 e_code = chfont(&keywordf, &bodyf, e_code);
951 for (t_ptr = token; *t_ptr; ++t_ptr) {
955 ps.want_blank = true;
958 case period: /* treat a period kind of like a binary
960 *e_code++ = '.'; /* move the period into line */
961 ps.want_blank = false; /* dont put a blank after a period */
965 ps.want_blank = (s_code != e_code); /* only put blank after comma
966 * if comma does not start the
968 if (ps.in_decl && is_procname == 0 && !ps.block_init)
969 while ((e_code - s_code) < (dec_ind - 1)) {
975 if (ps.p_l_follow == 0) {
976 if (ps.block_init_level <= 0)
978 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
983 case preesc: /* got the character '#' */
984 if ((s_com != e_com) ||
988 *e_lab++ = '#'; /* move whole line to 'label' buffer */
995 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
997 if (buf_ptr >= buf_end)
1000 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1002 *e_lab = *buf_ptr++;
1003 if (buf_ptr >= buf_end)
1008 *e_lab++ = BACKSLASH;
1010 *e_lab++ = *buf_ptr++;
1011 if (buf_ptr >= buf_end)
1016 if (*buf_ptr == '*' && !in_comment && !quote) {
1018 *e_lab++ = *buf_ptr++;
1019 com_start = e_lab - s_lab - 2;
1031 if (*buf_ptr == '/' && in_comment) {
1033 *e_lab++ = *buf_ptr++;
1034 com_end = e_lab - s_lab;
1040 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1042 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on
1043 * preprocessor line */
1044 if (sc_end == 0) /* if this is the first comment, we
1045 * must set up the buffer */
1046 sc_end = &(save_com[0]);
1048 *sc_end++ = '\n'; /* add newline between
1053 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1054 sc_end += com_end - com_start;
1055 if (sc_end >= &save_com[sc_size])
1057 e_lab = s_lab + com_start;
1058 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1060 bp_save = buf_ptr; /* save current input buffer */
1062 buf_ptr = save_com; /* fix so that subsequent calls to
1063 * lexi will take tokens out of
1065 *sc_end++ = ' '; /* add trailing blank, just in case */
1069 *e_lab = '\0'; /* null terminate line */
1073 if (strncmp(s_lab, "#if", 3) == 0) {
1074 if (blanklines_around_conditional_compilation) {
1076 prefix_blankline_requested++;
1077 while ((c = getc(input)) == '\n');
1080 if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) {
1081 match_state[ifdef_level].tos = -1;
1082 state_stack[ifdef_level++] = ps;
1085 diag2(1, "#if stack overflow");
1087 else if (strncmp(s_lab, "#else", 5) == 0)
1088 if (ifdef_level <= 0)
1089 diag2(1, "Unmatched #else");
1091 match_state[ifdef_level - 1] = ps;
1092 ps = state_stack[ifdef_level - 1];
1094 else if (strncmp(s_lab, "#endif", 6) == 0) {
1095 if (ifdef_level <= 0)
1096 diag2(1, "Unmatched #endif");
1102 * This match needs to be more intelligent before the
1105 if (match_state[ifdef_level].tos >= 0
1106 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1107 diag2(0, "Syntactically inconsistant #ifdef alternatives.");
1110 if (blanklines_around_conditional_compilation) {
1111 postfix_blankline_requested++;
1112 n_real_blanklines = 0;
1115 break; /* subsequent processing of the newline
1116 * character will cause the line to be printed */
1118 case comment: /* we have gotten a / followed by * this is a biggie */
1119 if (flushed_nl) { /* we should force a broken line here */
1122 ps.want_blank = false; /* dont insert blank at line start */
1127 } /* end of big switch stmt */
1129 *e_code = '\0'; /* make sure code section is null terminated */
1130 if (type_code != comment && type_code != newline && type_code != preesc)
1131 ps.last_token = type_code;
1132 } /* end of main while (1) loop */
1136 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1137 * backup file will be ".Bfile" then make the backup file the input and
1138 * original input file the output
1145 char buff[8 * 1024];
1148 /* construct file name .Bfile */
1149 for (p = in_name; *p; p++); /* skip to end of string */
1150 while (p > in_name && *p != '/') /* find last '/' */
1154 sprintf(bakfile, "%s.BAK", p);
1156 /* copy in_name to backup file */
1157 bakchn = creat(bakfile, 0600);
1159 err(1, "%s", bakfile);
1160 while ((n = read(fileno(input), buff, sizeof buff)) != 0)
1161 if (write(bakchn, buff, n) != n)
1162 err(1, "%s", bakfile);
1164 err(1, "%s", in_name);
1168 /* re-open backup file as the input file */
1169 input = fopen(bakfile, "r");
1171 err(1, "%s", bakfile);
1172 /* now the original input file will be the output */
1173 output = fopen(in_name, "w");
1176 err(1, "%s", in_name);