xref: /freebsd/usr.bin/indent/pr_comment.c (revision 458051a57be8c09ba5f5a881a39e4f9b816aeb01)
170a3049eSPedro F. Giffuni /*-
29b50d902SRodney W. Grimes  * Copyright (c) 1985 Sun Microsystems, Inc.
39b50d902SRodney W. Grimes  * Copyright (c) 1980, 1993
49b50d902SRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
59b50d902SRodney W. Grimes  * All rights reserved.
69b50d902SRodney W. Grimes  *
79b50d902SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
89b50d902SRodney W. Grimes  * modification, are permitted provided that the following conditions
99b50d902SRodney W. Grimes  * are met:
109b50d902SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
119b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
129b50d902SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
139b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
149b50d902SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
159b50d902SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
169b50d902SRodney W. Grimes  *    must display the following acknowledgement:
179b50d902SRodney W. Grimes  *	This product includes software developed by the University of
189b50d902SRodney W. Grimes  *	California, Berkeley and its contributors.
199b50d902SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
209b50d902SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
219b50d902SRodney W. Grimes  *    without specific prior written permission.
229b50d902SRodney W. Grimes  *
239b50d902SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
249b50d902SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
259b50d902SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
269b50d902SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
279b50d902SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
289b50d902SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
299b50d902SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
309b50d902SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
319b50d902SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
329b50d902SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
339b50d902SRodney W. Grimes  * SUCH DAMAGE.
349b50d902SRodney W. Grimes  */
35e026a48cSDavid E. O'Brien 
36e026a48cSDavid E. O'Brien #if 0
37d0054952SPhilippe Charnier #ifndef lint
389b50d902SRodney W. Grimes static char sccsid[] = "@(#)pr_comment.c	8.1 (Berkeley) 6/6/93";
39e026a48cSDavid E. O'Brien #endif /* not lint */
40d0054952SPhilippe Charnier #endif
41d0054952SPhilippe Charnier 
42e026a48cSDavid E. O'Brien #include <sys/cdefs.h>
43e026a48cSDavid E. O'Brien __FBSDID("$FreeBSD$");
44e026a48cSDavid E. O'Brien 
45d0054952SPhilippe Charnier #include <err.h>
469b50d902SRodney W. Grimes #include <stdio.h>
479b50d902SRodney W. Grimes #include <stdlib.h>
4854d57555SPedro F. Giffuni #include <string.h>
499b50d902SRodney W. Grimes #include "indent_globs.h"
507916863dSJens Schweikhardt #include "indent.h"
519b50d902SRodney W. Grimes /*
529b50d902SRodney W. Grimes  * NAME:
539b50d902SRodney W. Grimes  *	pr_comment
549b50d902SRodney W. Grimes  *
559b50d902SRodney W. Grimes  * FUNCTION:
569b50d902SRodney W. Grimes  *	This routine takes care of scanning and printing comments.
579b50d902SRodney W. Grimes  *
589b50d902SRodney W. Grimes  * ALGORITHM:
599b50d902SRodney W. Grimes  *	1) Decide where the comment should be aligned, and if lines should
609b50d902SRodney W. Grimes  *	   be broken.
619b50d902SRodney W. Grimes  *	2) If lines should not be broken and filled, just copy up to end of
629b50d902SRodney W. Grimes  *	   comment.
639b50d902SRodney W. Grimes  *	3) If lines should be filled, then scan thru input_buffer copying
649b50d902SRodney W. Grimes  *	   characters to com_buf.  Remember where the last blank, tab, or
659b50d902SRodney W. Grimes  *	   newline was.  When line is filled, print up to last blank and
669b50d902SRodney W. Grimes  *	   continue copying.
679b50d902SRodney W. Grimes  *
689b50d902SRodney W. Grimes  * HISTORY:
699b50d902SRodney W. Grimes  *	November 1976	D A Willcox of CAC	Initial coding
709b50d902SRodney W. Grimes  *	12/6/76		D A Willcox of CAC	Modification to handle
719b50d902SRodney W. Grimes  *						UNIX-style comments
729b50d902SRodney W. Grimes  *
739b50d902SRodney W. Grimes  */
749b50d902SRodney W. Grimes 
759b50d902SRodney W. Grimes /*
769b50d902SRodney W. Grimes  * this routine processes comments.  It makes an attempt to keep comments from
779b50d902SRodney W. Grimes  * going over the max line length.  If a line is too long, it moves everything
789b50d902SRodney W. Grimes  * from the last blank to the next comment line.  Blanks and tabs from the
799b50d902SRodney W. Grimes  * beginning of the input line are removed
809b50d902SRodney W. Grimes  */
819b50d902SRodney W. Grimes 
827916863dSJens Schweikhardt void
837916863dSJens Schweikhardt pr_comment(void)
849b50d902SRodney W. Grimes {
859b50d902SRodney W. Grimes     int         now_col;	/* column we are in now */
869b50d902SRodney W. Grimes     int         adj_max_col;	/* Adjusted max_col for when we decide to
879b50d902SRodney W. Grimes 				 * spill comments over the right margin */
889b50d902SRodney W. Grimes     char       *last_bl;	/* points to the last blank in the output
899b50d902SRodney W. Grimes 				 * buffer */
909b50d902SRodney W. Grimes     char       *t_ptr;		/* used for moving string */
919b50d902SRodney W. Grimes     int         break_delim = comment_delimiter_on_blankline;
929b50d902SRodney W. Grimes     int         l_just_saw_decl = ps.just_saw_decl;
939b50d902SRodney W. Grimes     adj_max_col = max_col;
949b50d902SRodney W. Grimes     ps.just_saw_decl = 0;
95c917a54bSPedro F. Giffuni     last_bl = NULL;		/* no blanks found so far */
969b50d902SRodney W. Grimes     ps.box_com = false;		/* at first, assume that we are not in
979b50d902SRodney W. Grimes 					 * a boxed comment or some other
989b50d902SRodney W. Grimes 					 * comment that should not be touched */
999b50d902SRodney W. Grimes     ++ps.out_coms;		/* keep track of number of comments */
1009b50d902SRodney W. Grimes 
1019b50d902SRodney W. Grimes     /* Figure where to align and how to treat the comment */
1029b50d902SRodney W. Grimes 
1039b50d902SRodney W. Grimes     if (ps.col_1 && !format_col1_comments) {	/* if comment starts in column
1049b50d902SRodney W. Grimes 						 * 1 it should not be touched */
1059b50d902SRodney W. Grimes 	ps.box_com = true;
10654d57555SPedro F. Giffuni 	break_delim = false;
1079b50d902SRodney W. Grimes 	ps.com_col = 1;
1089b50d902SRodney W. Grimes     }
1099b50d902SRodney W. Grimes     else {
110a5e1cac0SDavid E. O'Brien 	if (*buf_ptr == '-' || *buf_ptr == '*' ||
111a5e1cac0SDavid E. O'Brien 	    (*buf_ptr == '\n' && !format_block_comments)) {
112a5e1cac0SDavid E. O'Brien 	    ps.box_com = true;	/* A comment with a '-' or '*' immediately
1137916863dSJens Schweikhardt 				 * after the /+* is assumed to be a boxed
114a5e1cac0SDavid E. O'Brien 				 * comment. A comment with a newline
1157916863dSJens Schweikhardt 				 * immediately after the /+* is assumed to
116a5e1cac0SDavid E. O'Brien 				 * be a block comment and is treated as a
117a5e1cac0SDavid E. O'Brien 				 * box comment unless format_block_comments
118a5e1cac0SDavid E. O'Brien 				 * is nonzero (the default). */
11954d57555SPedro F. Giffuni 	    break_delim = false;
1209b50d902SRodney W. Grimes 	}
1219b50d902SRodney W. Grimes 	if ( /* ps.bl_line && */ (s_lab == e_lab) && (s_code == e_code)) {
1229b50d902SRodney W. Grimes 	    /* klg: check only if this line is blank */
1239b50d902SRodney W. Grimes 	    /*
1249b50d902SRodney W. Grimes 	     * If this (*and previous lines are*) blank, dont put comment way
1259b50d902SRodney W. Grimes 	     * out at left
1269b50d902SRodney W. Grimes 	     */
1279b50d902SRodney W. Grimes 	    ps.com_col = (ps.ind_level - ps.unindent_displace) * ps.ind_size + 1;
1289b50d902SRodney W. Grimes 	    adj_max_col = block_comment_max_col;
1299b50d902SRodney W. Grimes 	    if (ps.com_col <= 1)
1309b50d902SRodney W. Grimes 		ps.com_col = 1 + !format_col1_comments;
1319b50d902SRodney W. Grimes 	}
1329b50d902SRodney W. Grimes 	else {
13390af6a72SJuli Mallett 	    int target_col;
13454d57555SPedro F. Giffuni 	    break_delim = false;
1359b50d902SRodney W. Grimes 	    if (s_code != e_code)
1369b50d902SRodney W. Grimes 		target_col = count_spaces(compute_code_target(), s_code);
1379b50d902SRodney W. Grimes 	    else {
1389b50d902SRodney W. Grimes 		target_col = 1;
1399b50d902SRodney W. Grimes 		if (s_lab != e_lab)
1409b50d902SRodney W. Grimes 		    target_col = count_spaces(compute_label_target(), s_lab);
1419b50d902SRodney W. Grimes 	    }
1429b50d902SRodney W. Grimes 	    ps.com_col = ps.decl_on_line || ps.ind_level == 0 ? ps.decl_com_ind : ps.com_ind;
1439b50d902SRodney W. Grimes 	    if (ps.com_col < target_col)
1449b50d902SRodney W. Grimes 		ps.com_col = ((target_col + 7) & ~7) + 1;
1459b50d902SRodney W. Grimes 	    if (ps.com_col + 24 > adj_max_col)
1469b50d902SRodney W. Grimes 		adj_max_col = ps.com_col + 24;
1479b50d902SRodney W. Grimes 	}
1489b50d902SRodney W. Grimes     }
1499b50d902SRodney W. Grimes     if (ps.box_com) {
150*458051a5SPedro F. Giffuni 	/*
151*458051a5SPedro F. Giffuni 	 * Find out how much indentation there was originally, because that
152*458051a5SPedro F. Giffuni 	 * much will have to be ignored by pad_output() in dump_line(). This
153*458051a5SPedro F. Giffuni 	 * is a box comment, so nothing changes -- not even indentation.
154*458051a5SPedro F. Giffuni 	 *
155*458051a5SPedro F. Giffuni 	 * The comment we're about to read usually comes from in_buffer,
156*458051a5SPedro F. Giffuni 	 * unless it has been copied into save_com.
157*458051a5SPedro F. Giffuni 	 */
158*458051a5SPedro F. Giffuni 	char *start = buf_ptr >= save_com && buf_ptr < save_com + sc_size ? bp_save : buf_ptr;
159*458051a5SPedro F. Giffuni 	ps.n_comment_delta = 1 - count_spaces_until(1, in_buffer, start - 2);
1609b50d902SRodney W. Grimes     }
1619b50d902SRodney W. Grimes     else {
1629b50d902SRodney W. Grimes 	ps.n_comment_delta = 0;
1639b50d902SRodney W. Grimes 	while (*buf_ptr == ' ' || *buf_ptr == '\t')
1649b50d902SRodney W. Grimes 	    buf_ptr++;
1659b50d902SRodney W. Grimes     }
1669b50d902SRodney W. Grimes     ps.comment_delta = 0;
1677916863dSJens Schweikhardt     *e_com++ = '/';		/* put '/' followed by '*' into buffer */
1689b50d902SRodney W. Grimes     *e_com++ = '*';
1699b50d902SRodney W. Grimes     if (*buf_ptr != ' ' && !ps.box_com)
1709b50d902SRodney W. Grimes 	*e_com++ = ' ';
1719b50d902SRodney W. Grimes 
1726daffe6eSPedro F. Giffuni     /*
1736daffe6eSPedro F. Giffuni      * Don't put a break delimiter if this is a one-liner that won't wrap.
1746daffe6eSPedro F. Giffuni      */
1756daffe6eSPedro F. Giffuni     if (break_delim)
17654d57555SPedro F. Giffuni 	for (t_ptr = buf_ptr; *t_ptr != '\0' && *t_ptr != '\n'; t_ptr++) {
17754d57555SPedro F. Giffuni 	    if (t_ptr >= buf_end)
17854d57555SPedro F. Giffuni 		fill_buffer();
17954d57555SPedro F. Giffuni 	    if (t_ptr[0] == '*' && t_ptr[1] == '/') {
1806daffe6eSPedro F. Giffuni 		if (adj_max_col >= count_spaces_until(ps.com_col, buf_ptr, t_ptr + 2))
18154d57555SPedro F. Giffuni 		    break_delim = false;
18254d57555SPedro F. Giffuni 		break;
1839b50d902SRodney W. Grimes 	    }
18454d57555SPedro F. Giffuni 	}
18554d57555SPedro F. Giffuni 
18654d57555SPedro F. Giffuni     if (break_delim) {
18754d57555SPedro F. Giffuni 	char       *t = e_com;
18854d57555SPedro F. Giffuni 	e_com = s_com + 2;
18954d57555SPedro F. Giffuni 	*e_com = 0;
19054d57555SPedro F. Giffuni 	if (blanklines_before_blockcomments)
19154d57555SPedro F. Giffuni 	    prefix_blankline_requested = 1;
19254d57555SPedro F. Giffuni 	dump_line();
19369e66b43SPedro F. Giffuni 	e_com = s_com = t;
19469e66b43SPedro F. Giffuni 	if (!ps.box_com && star_comment_cont)
19569e66b43SPedro F. Giffuni 	    *e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
19654d57555SPedro F. Giffuni     }
19754d57555SPedro F. Giffuni 
19854d57555SPedro F. Giffuni     if (troff)
19954d57555SPedro F. Giffuni 	adj_max_col = 80;
2009b50d902SRodney W. Grimes 
2019b50d902SRodney W. Grimes     /* Start to copy the comment */
2029b50d902SRodney W. Grimes 
2039b50d902SRodney W. Grimes     while (1) {			/* this loop will go until the comment is
2049b50d902SRodney W. Grimes 				 * copied */
2059b50d902SRodney W. Grimes 	CHECK_SIZE_COM;
2069b50d902SRodney W. Grimes 	switch (*buf_ptr) {	/* this checks for various spcl cases */
2079b50d902SRodney W. Grimes 	case 014:		/* check for a form feed */
2089b50d902SRodney W. Grimes 	    if (!ps.box_com) {	/* in a text comment, break the line here */
2099b50d902SRodney W. Grimes 		ps.use_ff = true;
2109b50d902SRodney W. Grimes 		/* fix so dump_line uses a form feed */
2119b50d902SRodney W. Grimes 		dump_line();
212c917a54bSPedro F. Giffuni 		last_bl = NULL;
21369e66b43SPedro F. Giffuni 		if (!ps.box_com && star_comment_cont)
21469e66b43SPedro F. Giffuni 		    *e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
21569e66b43SPedro F. Giffuni 		while (*++buf_ptr == ' ' || *buf_ptr == '\t')
21669e66b43SPedro F. Giffuni 		    ;
2179b50d902SRodney W. Grimes 	    }
2189b50d902SRodney W. Grimes 	    else {
2199b50d902SRodney W. Grimes 		if (++buf_ptr >= buf_end)
2209b50d902SRodney W. Grimes 		    fill_buffer();
2219b50d902SRodney W. Grimes 		*e_com++ = 014;
2229b50d902SRodney W. Grimes 	    }
2239b50d902SRodney W. Grimes 	    break;
2249b50d902SRodney W. Grimes 
2259b50d902SRodney W. Grimes 	case '\n':
2269b50d902SRodney W. Grimes 	    if (had_eof) {	/* check for unexpected eof */
2279b50d902SRodney W. Grimes 		printf("Unterminated comment\n");
2289b50d902SRodney W. Grimes 		dump_line();
2299b50d902SRodney W. Grimes 		return;
2309b50d902SRodney W. Grimes 	    }
2318ad92a65SPedro F. Giffuni 	    last_bl = NULL;
2329b50d902SRodney W. Grimes 	    if (ps.box_com || ps.last_nl) {	/* if this is a boxed comment,
2339b50d902SRodney W. Grimes 						 * we dont ignore the newline */
23469e66b43SPedro F. Giffuni 		if (s_com == e_com)
2359b50d902SRodney W. Grimes 		    *e_com++ = ' ';
2369b50d902SRodney W. Grimes 		if (!ps.box_com && e_com - s_com > 3) {
2379b50d902SRodney W. Grimes 		    dump_line();
23869e66b43SPedro F. Giffuni 		    if (star_comment_cont)
23969e66b43SPedro F. Giffuni 			*e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
2409b50d902SRodney W. Grimes 		}
2419b50d902SRodney W. Grimes 		dump_line();
24269e66b43SPedro F. Giffuni 		if (!ps.box_com && star_comment_cont)
24369e66b43SPedro F. Giffuni 		    *e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
2449b50d902SRodney W. Grimes 	    }
2459b50d902SRodney W. Grimes 	    else {
2469b50d902SRodney W. Grimes 		ps.last_nl = 1;
2479b50d902SRodney W. Grimes 		if (*(e_com - 1) == ' ' || *(e_com - 1) == '\t')
2489b50d902SRodney W. Grimes 		    last_bl = e_com - 1;
2499b50d902SRodney W. Grimes 		/*
2509b50d902SRodney W. Grimes 		 * if there was a space at the end of the last line, remember
2519b50d902SRodney W. Grimes 		 * where it was
2529b50d902SRodney W. Grimes 		 */
2539b50d902SRodney W. Grimes 		else {		/* otherwise, insert one */
2549b50d902SRodney W. Grimes 		    last_bl = e_com;
2559b50d902SRodney W. Grimes 		    CHECK_SIZE_COM;
2569b50d902SRodney W. Grimes 		    *e_com++ = ' ';
2579b50d902SRodney W. Grimes 		}
2589b50d902SRodney W. Grimes 	    }
2599b50d902SRodney W. Grimes 	    ++line_no;		/* keep track of input line number */
2609b50d902SRodney W. Grimes 	    if (!ps.box_com) {
2619b50d902SRodney W. Grimes 		int         nstar = 1;
2629b50d902SRodney W. Grimes 		do {		/* flush any blanks and/or tabs at start of
2639b50d902SRodney W. Grimes 				 * next line */
2649b50d902SRodney W. Grimes 		    if (++buf_ptr >= buf_end)
2659b50d902SRodney W. Grimes 			fill_buffer();
2669b50d902SRodney W. Grimes 		    if (*buf_ptr == '*' && --nstar >= 0) {
2679b50d902SRodney W. Grimes 			if (++buf_ptr >= buf_end)
2689b50d902SRodney W. Grimes 			    fill_buffer();
2699b50d902SRodney W. Grimes 			if (*buf_ptr == '/')
2709b50d902SRodney W. Grimes 			    goto end_of_comment;
2719b50d902SRodney W. Grimes 		    }
2729b50d902SRodney W. Grimes 		} while (*buf_ptr == ' ' || *buf_ptr == '\t');
2739b50d902SRodney W. Grimes 	    }
2749b50d902SRodney W. Grimes 	    else if (++buf_ptr >= buf_end)
2759b50d902SRodney W. Grimes 		fill_buffer();
2769b50d902SRodney W. Grimes 	    break;		/* end of case for newline */
2779b50d902SRodney W. Grimes 
2789b50d902SRodney W. Grimes 	case '*':		/* must check for possibility of being at end
2799b50d902SRodney W. Grimes 				 * of comment */
2809b50d902SRodney W. Grimes 	    if (++buf_ptr >= buf_end)	/* get to next char after * */
2819b50d902SRodney W. Grimes 		fill_buffer();
2829b50d902SRodney W. Grimes 
2839b50d902SRodney W. Grimes 	    if (*buf_ptr == '/') {	/* it is the end!!! */
2849b50d902SRodney W. Grimes 	end_of_comment:
2859b50d902SRodney W. Grimes 		if (++buf_ptr >= buf_end)
2869b50d902SRodney W. Grimes 		    fill_buffer();
28769e66b43SPedro F. Giffuni 		CHECK_SIZE_COM;
28854d57555SPedro F. Giffuni 		if (break_delim) {
28954d57555SPedro F. Giffuni 		    if (e_com > s_com + 3) {
2909b50d902SRodney W. Grimes 			dump_line();
29154d57555SPedro F. Giffuni 		    }
29269e66b43SPedro F. Giffuni 		    else
29369e66b43SPedro F. Giffuni 			s_com = e_com;
29469e66b43SPedro F. Giffuni 		    *e_com++ = ' ';
2959b50d902SRodney W. Grimes 		}
29669e66b43SPedro F. Giffuni 		if (e_com[-1] != ' ' && !ps.box_com)
29769e66b43SPedro F. Giffuni 		    *e_com++ = ' ';	/* ensure blank before end */
29869e66b43SPedro F. Giffuni 		*e_com++ = '*', *e_com++ = '/', *e_com = '\0';
2999b50d902SRodney W. Grimes 		ps.just_saw_decl = l_just_saw_decl;
3009b50d902SRodney W. Grimes 		return;
3019b50d902SRodney W. Grimes 	    }
30254d57555SPedro F. Giffuni 	    else		/* handle isolated '*' */
3039b50d902SRodney W. Grimes 		*e_com++ = '*';
3049b50d902SRodney W. Grimes 	    break;
3059b50d902SRodney W. Grimes 	default:		/* we have a random char */
30654d57555SPedro F. Giffuni 	    now_col = count_spaces_until(ps.com_col, s_com, e_com);
30754d57555SPedro F. Giffuni 	    do {
3089b50d902SRodney W. Grimes 		*e_com = *buf_ptr++;
3099b50d902SRodney W. Grimes 		if (buf_ptr >= buf_end)
3109b50d902SRodney W. Grimes 		    fill_buffer();
3119b50d902SRodney W. Grimes 		if (*e_com == ' ' || *e_com == '\t')
31254d57555SPedro F. Giffuni 		    last_bl = e_com;	/* remember we saw a blank */
3139b50d902SRodney W. Grimes 		++e_com;
31454d57555SPedro F. Giffuni 		now_col++;
31554d57555SPedro F. Giffuni 	    } while (!memchr("*\n\r\b\t", *buf_ptr, 6) &&
31669e66b43SPedro F. Giffuni 		(now_col <= adj_max_col || !last_bl));
31754d57555SPedro F. Giffuni 	    ps.last_nl = false;
318267c7470SPedro F. Giffuni 	    if (now_col > adj_max_col && !ps.box_com && e_com[-1] > ' ') {
3199b50d902SRodney W. Grimes 		/*
3209b50d902SRodney W. Grimes 		 * the comment is too long, it must be broken up
3219b50d902SRodney W. Grimes 		 */
32269e66b43SPedro F. Giffuni 		if (last_bl == NULL) {
32369e66b43SPedro F. Giffuni 		    dump_line();
32469e66b43SPedro F. Giffuni 		    if (!ps.box_com && star_comment_cont)
32569e66b43SPedro F. Giffuni 			*e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
32669e66b43SPedro F. Giffuni 		    break;
3279b50d902SRodney W. Grimes 		}
32869e66b43SPedro F. Giffuni 		*e_com = '\0';
3299b50d902SRodney W. Grimes 		e_com = last_bl;
3309b50d902SRodney W. Grimes 		dump_line();
33169e66b43SPedro F. Giffuni 		if (!ps.box_com && star_comment_cont)
33269e66b43SPedro F. Giffuni 		    *e_com++ = ' ', *e_com++ = '*', *e_com++ = ' ';
33369e66b43SPedro F. Giffuni 		for (t_ptr = last_bl + 1; *t_ptr == ' ' || *t_ptr == '\t';
33469e66b43SPedro F. Giffuni 		    t_ptr++)
33569e66b43SPedro F. Giffuni 			;
336c917a54bSPedro F. Giffuni 		last_bl = NULL;
33769e66b43SPedro F. Giffuni 		while (*t_ptr != '\0') {
3389b50d902SRodney W. Grimes 		    if (*t_ptr == ' ' || *t_ptr == '\t')
3399b50d902SRodney W. Grimes 			last_bl = e_com;
3409b50d902SRodney W. Grimes 		    *e_com++ = *t_ptr++;
3419b50d902SRodney W. Grimes  		}
3429b50d902SRodney W. Grimes 	    }
3439b50d902SRodney W. Grimes 	    break;
3449b50d902SRodney W. Grimes 	}
3459b50d902SRodney W. Grimes     }
3469b50d902SRodney W. Grimes }
347