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 == 0) { /* 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 == 0) /* check for open error */
191 err(1, "%s", in_name);
194 else if (output == 0) { /* 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 == 0) /* check for create error */
202 err(1, "%s", out_name);
205 errx(1, "unknown parameter: %s", argv[i]);
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 == 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 statement */
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);
577 const char *res = token;
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 */
603 const char *res = token;
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 an 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 an 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 an 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) {
752 if (function_brace_split) { /* dump the line prior to the
755 ps.want_blank = false;
756 } else /* add a space between the decl and brace */
757 ps.want_blank = true;
760 if (ps.in_parameter_declaration)
761 prefix_blankline_requested = 0;
763 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
765 diag2(1, "Unbalanced parens");
767 if (sp_sw) { /* check for unclosed if, for, etc. */
770 ps.ind_level = ps.i_l_follow;
773 if (s_code == e_code)
774 ps.ind_stmt = false; /* dont put extra indentation on line
776 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
777 * declaration or an init */
778 di_stack[ps.dec_nest++] = dec_ind;
782 ps.decl_on_line = false; /* we cant be in the middle of
783 * a declaration, so dont do
784 * special indentation of
786 if (blanklines_after_declarations_at_proctop
787 && ps.in_parameter_declaration)
788 postfix_blankline_requested = 1;
789 ps.in_parameter_declaration = 0;
792 parse(lbrace); /* let parser know about this */
793 if (ps.want_blank) /* put a blank before '{' if '{' is not at
796 ps.want_blank = false;
798 ps.just_saw_decl = 0;
801 case rbrace: /* got a '}' */
802 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
806 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
807 diag2(1, "Unbalanced parens");
811 ps.just_saw_decl = 0;
812 ps.block_init_level--;
813 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
816 diag2(0, "Line broken");
820 ps.want_blank = true;
821 ps.in_stmt = ps.ind_stmt = false;
822 if (ps.dec_nest > 0) { /* we are in multi-level structure
824 dec_ind = di_stack[--ps.dec_nest];
825 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
826 ps.just_saw_decl = 2;
829 prefix_blankline_requested = 0;
830 parse(rbrace); /* let parser know about this */
831 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
832 && ps.il[ps.tos] >= ps.ind_level;
833 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
834 postfix_blankline_requested = 1;
837 case swstmt: /* got keyword "switch" */
839 hd_type = swstmt; /* keep this for when we have seen the
841 goto copy_id; /* go move the token into buffer */
843 case sp_paren: /* token is if, while, for */
844 sp_sw = true; /* the interesting stuff is done after the
845 * expression is scanned */
846 hd_type = (*token == 'i' ? ifstmt :
847 (*token == 'w' ? whilestmt : forstmt));
850 * remember the type of header for later use by parser
852 goto copy_id; /* copy the token into line */
854 case sp_nparen: /* got else, do */
857 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
859 diag2(0, "Line broken");
860 dump_line();/* make sure this starts a line */
861 ps.want_blank = false;
863 force_nl = true;/* also, following stuff must go onto new line */
868 if (e_code != s_code) { /* make sure this starts a line */
870 diag2(0, "Line broken");
872 ps.want_blank = false;
874 force_nl = true;/* also, following stuff must go onto new line */
878 goto copy_id; /* move the token into line */
880 case decl: /* we have a declaration type (int, register,
882 parse(decl); /* let parser worry about indentation */
883 if (ps.last_token == rparen && ps.tos <= 1) {
884 ps.in_parameter_declaration = 1;
885 if (s_code != e_code) {
890 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
891 ps.ind_level = ps.i_l_follow = 1;
894 ps.in_or_st = true; /* this might be a structure or initialization
896 ps.in_decl = ps.decl_on_line = true;
897 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
898 ps.just_saw_decl = 2;
899 prefix_blankline_requested = 0;
900 for (i = 0; token[i++];); /* get length of token */
902 if (ps.ind_level == 0 || ps.dec_nest > 0) {
903 /* global variable or struct member in local variable */
904 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
905 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
908 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
909 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
913 case ident: /* got an identifier or constant */
914 if (ps.in_decl) { /* if we are in a declaration, we must indent
916 if (is_procname == 0 || !procnames_start_line) {
917 if (!ps.block_init) {
918 if (troff && !ps.dumped_decl_indent) {
921 ps.want_blank = false;
922 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
923 ps.dumped_decl_indent = 1;
924 e_code += strlen(e_code);
930 * in order to get the tab math right for
931 * indentations that are not multiples of 8 we
932 * need to modify both startpos and dec_ind
933 * (cur_dec_ind) here by eight minus the
934 * remainder of the current starting column
935 * divided by eight. This seems to be a
936 * properly working fix
938 startpos = e_code - s_code;
939 cur_dec_ind = dec_ind;
941 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
942 pos += (ps.ind_level * ps.ind_size) % 8;
943 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
947 while ((pos & ~7) + 8 <= cur_dec_ind) {
950 pos = (pos & ~7) + 8;
953 while (pos < cur_dec_ind) {
958 if (ps.want_blank && e_code - s_code == startpos)
960 ps.want_blank = false;
966 ps.want_blank = false;
967 if (dec_ind && s_code != e_code)
972 else if (sp_sw && ps.p_l_follow == 0) {
982 if (troff && ps.its_a_keyword) {
983 e_code = chfont(&bodyf, &keywordf, e_code);
984 for (t_ptr = token; *t_ptr; ++t_ptr) {
986 *e_code++ = keywordf.allcaps && islower(*t_ptr)
987 ? toupper(*t_ptr) : *t_ptr;
989 e_code = chfont(&keywordf, &bodyf, e_code);
992 for (t_ptr = token; *t_ptr; ++t_ptr) {
996 ps.want_blank = true;
999 case period: /* treat a period kind of like a binary
1001 *e_code++ = '.'; /* move the period into line */
1002 ps.want_blank = false; /* dont put a blank after a period */
1006 ps.want_blank = (s_code != e_code); /* only put blank after comma
1007 * if comma does not start the
1009 if (ps.in_decl && is_procname == 0 && !ps.block_init)
1010 while ((e_code - s_code) < (dec_ind - 1)) {
1016 if (ps.p_l_follow == 0) {
1017 if (ps.block_init_level <= 0)
1019 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1024 case preesc: /* got the character '#' */
1025 if ((s_com != e_com) ||
1029 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1036 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1038 if (buf_ptr >= buf_end)
1041 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1043 *e_lab = *buf_ptr++;
1044 if (buf_ptr >= buf_end)
1049 *e_lab++ = BACKSLASH;
1051 *e_lab++ = *buf_ptr++;
1052 if (buf_ptr >= buf_end)
1057 if (*buf_ptr == '*' && !in_comment && !quote) {
1059 *e_lab++ = *buf_ptr++;
1060 com_start = e_lab - s_lab - 2;
1072 if (*buf_ptr == '/' && in_comment) {
1074 *e_lab++ = *buf_ptr++;
1075 com_end = e_lab - s_lab;
1081 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1083 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on
1084 * preprocessor line */
1085 if (sc_end == 0) /* if this is the first comment, we
1086 * must set up the buffer */
1087 sc_end = &(save_com[0]);
1089 *sc_end++ = '\n'; /* add newline between
1094 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1095 sc_end += com_end - com_start;
1096 if (sc_end >= &save_com[sc_size])
1098 e_lab = s_lab + com_start;
1099 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1101 bp_save = buf_ptr; /* save current input buffer */
1103 buf_ptr = save_com; /* fix so that subsequent calls to
1104 * lexi will take tokens out of
1106 *sc_end++ = ' '; /* add trailing blank, just in case */
1110 *e_lab = '\0'; /* null terminate line */
1114 if (strncmp(s_lab, "#if", 3) == 0) {
1115 if (blanklines_around_conditional_compilation) {
1117 prefix_blankline_requested++;
1118 while ((c = getc(input)) == '\n');
1121 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1122 match_state[ifdef_level].tos = -1;
1123 state_stack[ifdef_level++] = ps;
1126 diag2(1, "#if stack overflow");
1128 else if (strncmp(s_lab, "#else", 5) == 0)
1129 if (ifdef_level <= 0)
1130 diag2(1, "Unmatched #else");
1132 match_state[ifdef_level - 1] = ps;
1133 ps = state_stack[ifdef_level - 1];
1135 else if (strncmp(s_lab, "#endif", 6) == 0) {
1136 if (ifdef_level <= 0)
1137 diag2(1, "Unmatched #endif");
1143 * This match needs to be more intelligent before the
1146 if (match_state[ifdef_level].tos >= 0
1147 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1148 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1151 if (blanklines_around_conditional_compilation) {
1152 postfix_blankline_requested++;
1153 n_real_blanklines = 0;
1156 break; /* subsequent processing of the newline
1157 * character will cause the line to be printed */
1159 case comment: /* we have gotten a / followed by * this is a biggie */
1160 if (flushed_nl) { /* we should force a broken line here */
1163 ps.want_blank = false; /* dont insert blank at line start */
1168 } /* end of big switch stmt */
1170 *e_code = '\0'; /* make sure code section is null terminated */
1171 if (type_code != comment && type_code != newline && type_code != preesc)
1172 ps.last_token = type_code;
1173 } /* end of main while (1) loop */
1177 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1178 * backup file will be ".Bfile" then make the backup file the input and
1179 * original input file the output
1186 char buff[8 * 1024];
1189 /* construct file name .Bfile */
1190 for (p = in_name; *p; p++); /* skip to end of string */
1191 while (p > in_name && *p != '/') /* find last '/' */
1195 sprintf(bakfile, "%s.BAK", p);
1197 /* copy in_name to backup file */
1198 bakchn = creat(bakfile, 0600);
1200 err(1, "%s", bakfile);
1201 while ((n = read(fileno(input), buff, sizeof buff)) != 0)
1202 if (write(bakchn, buff, n) != n)
1203 err(1, "%s", bakfile);
1205 err(1, "%s", in_name);
1209 /* re-open backup file as the input file */
1210 input = fopen(bakfile, "r");
1212 err(1, "%s", bakfile);
1213 /* now the original input file will be the output */
1214 output = fopen(in_name, "w");
1217 err(1, "%s", in_name);