1/*
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.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
22 *
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
33 * SUCH DAMAGE.
34 */
35
36#ifndef lint
37static 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";
42#endif /* not lint */
43
44#ifndef lint
45#if 0
46static char sccsid[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93";
47#endif
48static const char rcsid[] =
| 1/*
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.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
22 *
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
33 * SUCH DAMAGE.
34 */
35
36#ifndef lint
37static 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";
42#endif /* not lint */
43
44#ifndef lint
45#if 0
46static char sccsid[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93";
47#endif
48static const char rcsid[] =
|
49 "$FreeBSD: head/usr.bin/indent/indent.c 93440 2002-03-30 17:10:20Z dwmalone $";
| 49 "$FreeBSD: head/usr.bin/indent/indent.c 98771 2002-06-24 17:40:27Z jmallett $";
|
50#endif /* not lint */
51
52#include <sys/param.h>
53#include <err.h>
54#include <fcntl.h>
55#include <unistd.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <ctype.h>
60#include "indent_globs.h"
61#include "indent_codes.h"
62#include "indent.h"
63
64static void bakcopy(void);
65
66const char *in_name = "Standard Input"; /* will always point to name of input
67 * file */
68const char *out_name = "Standard Output"; /* will always point to name
69 * of output file */
70char bakfile[MAXPATHLEN] = "";
71
72int
73main(int argc, char **argv)
74{
75
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 (...),
83 * for (...), etc */
| 50#endif /* not lint */
51
52#include <sys/param.h>
53#include <err.h>
54#include <fcntl.h>
55#include <unistd.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <ctype.h>
60#include "indent_globs.h"
61#include "indent_codes.h"
62#include "indent.h"
63
64static void bakcopy(void);
65
66const char *in_name = "Standard Input"; /* will always point to name of input
67 * file */
68const char *out_name = "Standard Output"; /* will always point to name
69 * of output file */
70char bakfile[MAXPATHLEN] = "";
71
72int
73main(int argc, char **argv)
74{
75
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 (...),
83 * for (...), etc */
|
84 register int i; /* local loop counter */
| 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 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>
91 * construct */
92 const char *t_ptr; /* used for copying tokens */
93 int type_code; /* the type of token, returned by lexi */
94
95 int last_else = 0; /* true iff last keyword was an else */
96
97
98 /*-----------------------------------------------*\
99 | INITIALIZATION |
100 \*-----------------------------------------------*/
101
102
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
105 * a newline */
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
116 * comment buffers */
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;
123
124 in_buffer = (char *) malloc(10);
125 in_buffer_limit = in_buffer + 8;
126 buf_ptr = buf_end = in_buffer;
127 line_no = 1;
128 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
129 sp_sw = force_nl = false;
130 ps.in_or_st = false;
131 ps.bl_line = true;
132 dec_ind = 0;
133 di_stack[ps.dec_nest = 0] = 0;
134 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
135
136
137 scase = ps.pcase = false;
138 squest = 0;
139 sc_end = 0;
140 bp_save = 0;
141 be_save = 0;
142
143 output = 0;
144
145
146
147 /*--------------------------------------------------*\
148 | COMMAND LINE SCAN |
149 \*--------------------------------------------------*/
150
151#ifdef undef
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 */
158 verbose = 0;
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
163 * ps.com_ind */
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 */
174#endif
175
176 for (i = 1; i < argc; ++i)
177 if (strcmp(argv[i], "-npro") == 0)
178 break;
179 set_defaults();
180 if (i >= argc)
181 set_profile();
182
183 for (i = 1; i < argc; ++i) {
184
185 /*
186 * look thru args (if any) for changes to defaults
187 */
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);
194 continue;
195 }
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
199 * the file */
200 errx(1, "input and output files must be different");
201 }
202 output = fopen(out_name, "w");
203 if (output == 0) /* check for create error */
204 err(1, "%s", out_name);
205 continue;
206 }
207 errx(1, "unknown parameter: %s", argv[i]);
208 }
209 else
210 set_option(argv[i]);
211 } /* end of for */
212 if (input == 0)
213 input = stdin;
214 if (output == 0) {
215 if (troff || input == stdin)
216 output = stdout;
217 else {
218 out_name = in_name;
219 bakcopy();
220 }
221 }
222 if (ps.com_ind <= 1)
223 ps.com_ind = 2; /* dont put normal comments before column 2 */
224 if (troff) {
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)
232 boxcomf = blkcomf;
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');
243 }
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 */
251
252 parse(semicolon);
253 {
| 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>
91 * construct */
92 const char *t_ptr; /* used for copying tokens */
93 int type_code; /* the type of token, returned by lexi */
94
95 int last_else = 0; /* true iff last keyword was an else */
96
97
98 /*-----------------------------------------------*\
99 | INITIALIZATION |
100 \*-----------------------------------------------*/
101
102
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
105 * a newline */
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
116 * comment buffers */
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;
123
124 in_buffer = (char *) malloc(10);
125 in_buffer_limit = in_buffer + 8;
126 buf_ptr = buf_end = in_buffer;
127 line_no = 1;
128 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
129 sp_sw = force_nl = false;
130 ps.in_or_st = false;
131 ps.bl_line = true;
132 dec_ind = 0;
133 di_stack[ps.dec_nest = 0] = 0;
134 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
135
136
137 scase = ps.pcase = false;
138 squest = 0;
139 sc_end = 0;
140 bp_save = 0;
141 be_save = 0;
142
143 output = 0;
144
145
146
147 /*--------------------------------------------------*\
148 | COMMAND LINE SCAN |
149 \*--------------------------------------------------*/
150
151#ifdef undef
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 */
158 verbose = 0;
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
163 * ps.com_ind */
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 */
174#endif
175
176 for (i = 1; i < argc; ++i)
177 if (strcmp(argv[i], "-npro") == 0)
178 break;
179 set_defaults();
180 if (i >= argc)
181 set_profile();
182
183 for (i = 1; i < argc; ++i) {
184
185 /*
186 * look thru args (if any) for changes to defaults
187 */
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);
194 continue;
195 }
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
199 * the file */
200 errx(1, "input and output files must be different");
201 }
202 output = fopen(out_name, "w");
203 if (output == 0) /* check for create error */
204 err(1, "%s", out_name);
205 continue;
206 }
207 errx(1, "unknown parameter: %s", argv[i]);
208 }
209 else
210 set_option(argv[i]);
211 } /* end of for */
212 if (input == 0)
213 input = stdin;
214 if (output == 0) {
215 if (troff || input == stdin)
216 output = stdout;
217 else {
218 out_name = in_name;
219 bakcopy();
220 }
221 }
222 if (ps.com_ind <= 1)
223 ps.com_ind = 2; /* dont put normal comments before column 2 */
224 if (troff) {
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)
232 boxcomf = blkcomf;
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');
243 }
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 */
251
252 parse(semicolon);
253 {
|
254 register char *p = buf_ptr;
255 register int col = 1;
| 254 char *p = buf_ptr;
255 int col = 1;
|
256
257 while (1) {
258 if (*p == ' ')
259 col++;
260 else if (*p == '\t')
261 col = ((col - 1) & ~7) + 9;
262 else
263 break;
264 p++;
265 }
266 if (col > ps.ind_size)
267 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
268 }
269 if (troff) {
270 const char *p = in_name,
271 *beg = in_name;
272
273 while (*p)
274 if (*p++ == '/')
275 beg = p;
276 fprintf(output, ".Fn \"%s\"\n", beg);
277 }
278 /*
279 * START OF MAIN LOOP
280 */
281
282 while (1) { /* this is the main loop. it will go until we
283 * reach eof */
284 int is_procname;
285
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];
290
291 /*
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.
295 */
296
297 flushed_nl = false;
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 */
304 switch (type_code) {
305 case newline:
306 ++line_no;
307 flushed_nl = true;
308 case form_feed:
309 break; /* form feeds and newlines found here will be
310 * ignored */
311
312 case lbrace: /* this is a brace that starts the compound
313 * stmt */
314 if (sc_end == 0) { /* ignore buffering if a comment wasnt
315 * stored up */
316 ps.search_brace = false;
317 goto check_type;
318 }
319 if (btype_2) {
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
323 * this loop */
324 }
325 case comment: /* we have a comment, so we must copy it into
326 * the buffer */
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]);
332 }
333 else {
334 *sc_end++ = '\n'; /* add newline between
335 * comments */
336 *sc_end++ = ' ';
337 --line_no;
338 }
339 *sc_end++ = '/'; /* copy in start of comment */
340 *sc_end++ = '*';
341
342 for (;;) { /* loop until we get to the end of the comment */
343 *sc_end = *buf_ptr++;
344 if (buf_ptr >= buf_end)
345 fill_buffer();
346
347 if (*sc_end++ == '*' && *buf_ptr == '/')
348 break; /* we are at end of comment */
349
350 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
351 * overflow */
352 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
353 fflush(output);
354 exit(1);
355 }
356 }
357 *sc_end++ = '/'; /* add ending slash */
358 if (++buf_ptr >= buf_end) /* get past / in buffer */
359 fill_buffer();
360 break;
361 }
362 default: /* it is the start of a normal statment */
363 if (flushed_nl) /* if we flushed a newline, make sure it is
364 * put back */
365 force_nl = true;
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] == '}'))
370 force_nl = false;
371
372 if (sc_end == 0) { /* ignore buffering if comment wasnt
373 * saved up */
374 ps.search_brace = false;
375 goto check_type;
376 }
377 if (force_nl) { /* if we should insert a nl here, put it into
378 * the buffer */
379 force_nl = false;
380 --line_no; /* this will be re-increased when the nl is
381 * read from the buffer */
382 *sc_end++ = '\n';
383 *sc_end++ = ' ';
384 if (verbose && !flushed_nl) /* print error msg if the line
385 * was not already broken */
386 diag2(0, "Line broken");
387 flushed_nl = false;
388 }
389 for (t_ptr = token; *t_ptr; ++t_ptr)
390 *sc_end++ = *t_ptr; /* copy token into temp buffer */
391 ps.procname[0] = 0;
392
393 sw_buffer:
394 ps.search_brace = false; /* stop looking for start of
395 * stmt */
396 bp_save = buf_ptr; /* save current input buffer */
397 be_save = buf_end;
398 buf_ptr = save_com; /* fix so that subsequent calls to
399 * lexi will take tokens out of
400 * save_com */
401 *sc_end++ = ' ';/* add trailing blank, just in case */
402 buf_end = sc_end;
403 sc_end = 0;
404 break;
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)
413 flushed_nl = 0;
414 } /* end of while (search_brace) */
415 last_else = 0;
416check_type:
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 */
420 dump_line();
421 if (ps.tos > 1) /* check for balanced braces */
422 diag2(1, "Stuff missing from end of file.");
423
424 if (verbose) {
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);
429 }
430 fflush(output);
431 exit(found_err);
432 }
433 if (
434 (type_code != comment) &&
435 (type_code != newline) &&
436 (type_code != preesc) &&
437 (type_code != form_feed)) {
438 if (force_nl &&
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");
444 flushed_nl = false;
445 dump_line();
446 ps.want_blank = false; /* dont insert blank at line start */
447 force_nl = false;
448 }
449 ps.in_stmt = true; /* turn on flag which causes an extra level of
450 * indentation. this is turned off by a ; or
451 * '}' */
452 if (s_com != e_com) { /* the turkey has embedded a comment
453 * in a line. fix it */
454 *e_code++ = ' ';
455 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
456 CHECK_SIZE_CODE;
457 *e_code++ = *t_ptr;
458 }
459 *e_code++ = ' ';
460 *e_code = '\0'; /* null terminate code sect */
461 ps.want_blank = false;
462 e_com = s_com;
463 }
464 }
465 else if (type_code != comment) /* preserve force_nl thru a comment */
466 force_nl = false; /* cancel forced newline after newline, form
467 * feed, etc */
468
469
470
471 /*-----------------------------------------------------*\
472 | do switch on type of token scanned |
473 \*-----------------------------------------------------*/
474 CHECK_SIZE_CODE;
475 switch (type_code) { /* now, decide what to do with the token */
476
477 case form_feed: /* found a form feed in line */
478 ps.use_ff = true; /* a form feed is treated much like a newline */
479 dump_line();
480 ps.want_blank = false;
481 break;
482
483 case newline:
484 if (ps.last_token != comma || ps.p_l_follow > 0
485 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
486 dump_line();
487 ps.want_blank = false;
488 }
489 ++line_no; /* keep track of input line number */
490 break;
491
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))))
497 *e_code++ = ' ';
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);
503 }
504 else {
505 while ((e_code - s_code) < dec_ind) {
506 CHECK_SIZE_CODE;
507 *e_code++ = ' ';
508 }
509 *e_code++ = token[0];
510 }
511 else
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) {
519 /*
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.
522 * "int a(x) {..."
523 */
524 parse(semicolon); /* I said this was a kluge... */
525 ps.in_or_st = false; /* turn off flag for structure decl or
526 * initialization */
527 }
528 if (ps.sizeof_keyword)
529 ps.sizeof_mask |= 1 << ps.p_l_follow;
530 break;
531
532 case rparen: /* got a ')' or ']' */
533 rparen_count--;
534 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
535 ps.last_u_d = true;
536 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
537 ps.want_blank = false;
538 } else
539 ps.want_blank = true;
540 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
541 if (--ps.p_l_follow < 0) {
542 ps.p_l_follow = 0;
543 diag3(0, "Extra %c", *token);
544 }
545 if (e_code == s_code) /* if the paren starts the line */
546 ps.paren_level = ps.p_l_follow; /* then indent it */
547
548 *e_code++ = token[0];
549
550 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
551 * (...), or some such */
552 sp_sw = false;
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
557 * indentation */
558
559 parse(hd_type); /* let parser worry about if, or whatever */
560 }
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
564 * place */
565 break;
566
567 case unary_op: /* this could be any unary operation */
568 if (ps.want_blank)
569 *e_code++ = ' ';
570
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);
575 }
576 else {
577 const char *res = token;
578
579 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
580 * in a declaration, we
581 * should indent this
582 * token */
583 for (i = 0; token[i]; ++i); /* find length of token */
584 while ((e_code - s_code) < (dec_ind - i)) {
585 CHECK_SIZE_CODE;
586 *e_code++ = ' '; /* pad it */
587 }
588 }
589 if (troff && token[0] == '-' && token[1] == '>')
590 res = "\\(->";
591 for (t_ptr = res; *t_ptr; ++t_ptr) {
592 CHECK_SIZE_CODE;
593 *e_code++ = *t_ptr;
594 }
595 }
596 ps.want_blank = false;
597 break;
598
599 case binary_op: /* any binary operation */
600 if (ps.want_blank)
601 *e_code++ = ' ';
602 {
603 const char *res = token;
604
605 if (troff)
606 switch (token[0]) {
607 case '<':
608 if (token[1] == '=')
609 res = "\\(<=";
610 break;
611 case '>':
612 if (token[1] == '=')
613 res = "\\(>=";
614 break;
615 case '!':
616 if (token[1] == '=')
617 res = "\\(!=";
618 break;
619 case '|':
620 if (token[1] == '|')
621 res = "\\(br\\(br";
622 else if (token[1] == 0)
623 res = "\\(br";
624 break;
625 }
626 for (t_ptr = res; *t_ptr; ++t_ptr) {
627 CHECK_SIZE_CODE;
628 *e_code++ = *t_ptr; /* move the operator */
629 }
630 }
631 ps.want_blank = true;
632 break;
633
634 case postop: /* got a trailing ++ or -- */
635 *e_code++ = token[0];
636 *e_code++ = token[1];
637 ps.want_blank = true;
638 break;
639
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 */
644 if (ps.want_blank)
645 *e_code++ = ' ';
646 *e_code++ = '?';
647 ps.want_blank = true;
648 break;
649
650 case casestmt: /* got word 'case' or 'default' */
651 scase = true; /* so we can process the later colon properly */
652 goto copy_id;
653
654 case colon: /* got a ':' */
655 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
656 --squest;
657 if (ps.want_blank)
658 *e_code++ = ' ';
659 *e_code++ = ':';
660 ps.want_blank = true;
661 break;
662 }
663 if (ps.in_decl) {
664 *e_code++ = ':';
665 ps.want_blank = false;
666 break;
667 }
668 ps.in_stmt = false; /* seeing a label does not imply we are in a
669 * stmt */
670 for (t_ptr = s_code; *t_ptr; ++t_ptr)
671 *e_lab++ = *t_ptr; /* turn everything so far into a label */
672 e_code = s_code;
673 *e_lab++ = ':';
674 *e_lab++ = ' ';
675 *e_lab = '\0';
676
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 */
682 scase = false;
683 ps.want_blank = false;
684 break;
685
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 */
690 squest = 0;
691 if (ps.last_token == rparen && rparen_count == 0)
692 ps.in_parameter_declaration = 0;
693 ps.cast_mask = 0;
694 ps.sizeof_mask = 0;
695 ps.block_init = 0;
696 ps.block_init_level = 0;
697 ps.just_saw_decl--;
698
699 if (ps.in_decl && s_code == e_code && !ps.block_init)
700 while ((e_code - s_code) < (dec_ind - 1)) {
701 CHECK_SIZE_CODE;
702 *e_code++ = ' ';
703 }
704
705 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
706 * structure declaration, we
707 * arent any more */
708
709 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
710
711 /*
712 * This should be true iff there were unbalanced parens in the
713 * stmt. It is a bit complicated, because the semicolon might
714 * be in a for stmt
715 */
716 diag2(1, "Unbalanced parens");
717 ps.p_l_follow = 0;
718 if (sp_sw) { /* this is a check for a if, while, etc. with
719 * unbalanced parens */
720 sp_sw = false;
721 parse(hd_type); /* dont lose the if, or whatever */
722 }
723 }
724 *e_code++ = ';';
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 */
728
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 */
732 }
733 break;
734
735 case lbrace: /* got a '{' */
736 ps.in_stmt = false; /* dont indent the {} */
737 if (!ps.block_init)
738 force_nl = true;/* force other stuff on same line as '{' onto
739 * new line */
740 else if (ps.block_init_level <= 0)
741 ps.block_init_level = 1;
742 else
743 ps.block_init_level++;
744
745 if (s_code != e_code && !ps.block_init) {
746 if (!btype_2) {
747 dump_line();
748 ps.want_blank = false;
749 }
750 else if (ps.in_parameter_declaration && !ps.in_or_st) {
751 ps.i_l_follow = 0;
752 dump_line();
753 ps.want_blank = false;
754 }
755 }
756 if (ps.in_parameter_declaration)
757 prefix_blankline_requested = 0;
758
759 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
760 * parens */
761 diag2(1, "Unbalanced parens");
762 ps.p_l_follow = 0;
763 if (sp_sw) { /* check for unclosed if, for, etc. */
764 sp_sw = false;
765 parse(hd_type);
766 ps.ind_level = ps.i_l_follow;
767 }
768 }
769 if (s_code == e_code)
770 ps.ind_stmt = false; /* dont put extra indentation on line
771 * with '{' */
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;
775 /* ? dec_ind = 0; */
776 }
777 else {
778 ps.decl_on_line = false; /* we cant be in the middle of
779 * a declaration, so dont do
780 * special indentation of
781 * comments */
782 if (blanklines_after_declarations_at_proctop
783 && ps.in_parameter_declaration)
784 postfix_blankline_requested = 1;
785 ps.in_parameter_declaration = 0;
786 }
787 dec_ind = 0;
788 parse(lbrace); /* let parser know about this */
789 if (ps.want_blank) /* put a blank before '{' if '{' is not at
790 * start of line */
791 *e_code++ = ' ';
792 ps.want_blank = false;
793 *e_code++ = '{';
794 ps.just_saw_decl = 0;
795 break;
796
797 case rbrace: /* got a '}' */
798 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
799 * omitted in
800 * declarations */
801 parse(semicolon);
802 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
803 diag2(1, "Unbalanced parens");
804 ps.p_l_follow = 0;
805 sp_sw = false;
806 }
807 ps.just_saw_decl = 0;
808 ps.block_init_level--;
809 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
810 * line */
811 if (verbose)
812 diag2(0, "Line broken");
813 dump_line();
814 }
815 *e_code++ = '}';
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
819 * declaration */
820 dec_ind = di_stack[--ps.dec_nest];
821 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
822 ps.just_saw_decl = 2;
823 ps.in_decl = true;
824 }
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;
831 break;
832
833 case swstmt: /* got keyword "switch" */
834 sp_sw = true;
835 hd_type = swstmt; /* keep this for when we have seen the
836 * expression */
837 goto copy_id; /* go move the token into buffer */
838
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));
844
845 /*
846 * remember the type of header for later use by parser
847 */
848 goto copy_id; /* copy the token into line */
849
850 case sp_nparen: /* got else, do */
851 ps.in_stmt = false;
852 if (*token == 'e') {
853 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
854 if (verbose)
855 diag2(0, "Line broken");
856 dump_line();/* make sure this starts a line */
857 ps.want_blank = false;
858 }
859 force_nl = true;/* also, following stuff must go onto new line */
860 last_else = 1;
861 parse(elselit);
862 }
863 else {
864 if (e_code != s_code) { /* make sure this starts a line */
865 if (verbose)
866 diag2(0, "Line broken");
867 dump_line();
868 ps.want_blank = false;
869 }
870 force_nl = true;/* also, following stuff must go onto new line */
871 last_else = 0;
872 parse(dolit);
873 }
874 goto copy_id; /* move the token into line */
875
876 case decl: /* we have a declaration type (int, register,
877 * etc.) */
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) {
882 dump_line();
883 ps.want_blank = 0;
884 }
885 }
886 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
887 ps.ind_level = ps.i_l_follow = 1;
888 ps.ind_stmt = 0;
889 }
890 ps.in_or_st = true; /* this might be a structure or initialization
891 * declaration */
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 */
897
898 /*
899 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
900 * : i);
901 */
902 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
903 goto copy_id;
904
905 case ident: /* got an identifier or constant */
906 if (ps.in_decl) { /* if we are in a declaration, we must indent
907 * identifier */
908 if (ps.want_blank)
909 *e_code++ = ' ';
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);
917 } else {
918 while ((e_code - s_code) < dec_ind) {
919 CHECK_SIZE_CODE;
920 *e_code++ = ' ';
921 }
922 }
923 }
924 } else {
925 if (dec_ind && s_code != e_code)
926 dump_line();
927 dec_ind = 0;
928 ps.want_blank = false;
929 }
930 }
931 else if (sp_sw && ps.p_l_follow == 0) {
932 sp_sw = false;
933 force_nl = true;
934 ps.last_u_d = true;
935 ps.in_stmt = false;
936 parse(hd_type);
937 }
938 copy_id:
939 if (ps.want_blank)
940 *e_code++ = ' ';
941 if (troff && ps.its_a_keyword) {
942 e_code = chfont(&bodyf, &keywordf, e_code);
943 for (t_ptr = token; *t_ptr; ++t_ptr) {
944 CHECK_SIZE_CODE;
945 *e_code++ = keywordf.allcaps && islower(*t_ptr)
946 ? toupper(*t_ptr) : *t_ptr;
947 }
948 e_code = chfont(&keywordf, &bodyf, e_code);
949 }
950 else
951 for (t_ptr = token; *t_ptr; ++t_ptr) {
952 CHECK_SIZE_CODE;
953 *e_code++ = *t_ptr;
954 }
955 ps.want_blank = true;
956 break;
957
958 case period: /* treat a period kind of like a binary
959 * operation */
960 *e_code++ = '.'; /* move the period into line */
961 ps.want_blank = false; /* dont put a blank after a period */
962 break;
963
964 case comma:
965 ps.want_blank = (s_code != e_code); /* only put blank after comma
966 * if comma does not start the
967 * line */
968 if (ps.in_decl && is_procname == 0 && !ps.block_init)
969 while ((e_code - s_code) < (dec_ind - 1)) {
970 CHECK_SIZE_CODE;
971 *e_code++ = ' ';
972 }
973
974 *e_code++ = ',';
975 if (ps.p_l_follow == 0) {
976 if (ps.block_init_level <= 0)
977 ps.block_init = 0;
978 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
979 force_nl = true;
980 }
981 break;
982
983 case preesc: /* got the character '#' */
984 if ((s_com != e_com) ||
985 (s_lab != e_lab) ||
986 (s_code != e_code))
987 dump_line();
988 *e_lab++ = '#'; /* move whole line to 'label' buffer */
989 {
990 int in_comment = 0;
991 int com_start = 0;
992 char quote = 0;
993 int com_end = 0;
994
995 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
996 buf_ptr++;
997 if (buf_ptr >= buf_end)
998 fill_buffer();
999 }
1000 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1001 CHECK_SIZE_LAB;
1002 *e_lab = *buf_ptr++;
1003 if (buf_ptr >= buf_end)
1004 fill_buffer();
1005 switch (*e_lab++) {
1006 case BACKSLASH:
1007 if (troff)
1008 *e_lab++ = BACKSLASH;
1009 if (!in_comment) {
1010 *e_lab++ = *buf_ptr++;
1011 if (buf_ptr >= buf_end)
1012 fill_buffer();
1013 }
1014 break;
1015 case '/':
1016 if (*buf_ptr == '*' && !in_comment && !quote) {
1017 in_comment = 1;
1018 *e_lab++ = *buf_ptr++;
1019 com_start = e_lab - s_lab - 2;
1020 }
1021 break;
1022 case '"':
1023 if (quote == '"')
1024 quote = 0;
1025 break;
1026 case '\'':
1027 if (quote == '\'')
1028 quote = 0;
1029 break;
1030 case '*':
1031 if (*buf_ptr == '/' && in_comment) {
1032 in_comment = 0;
1033 *e_lab++ = *buf_ptr++;
1034 com_end = e_lab - s_lab;
1035 }
1036 break;
1037 }
1038 }
1039
1040 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1041 e_lab--;
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]);
1047 else {
1048 *sc_end++ = '\n'; /* add newline between
1049 * comments */
1050 *sc_end++ = ' ';
1051 --line_no;
1052 }
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])
1056 abort();
1057 e_lab = s_lab + com_start;
1058 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1059 e_lab--;
1060 bp_save = buf_ptr; /* save current input buffer */
1061 be_save = buf_end;
1062 buf_ptr = save_com; /* fix so that subsequent calls to
1063 * lexi will take tokens out of
1064 * save_com */
1065 *sc_end++ = ' '; /* add trailing blank, just in case */
1066 buf_end = sc_end;
1067 sc_end = 0;
1068 }
1069 *e_lab = '\0'; /* null terminate line */
1070 ps.pcase = false;
1071 }
1072
1073 if (strncmp(s_lab, "#if", 3) == 0) {
1074 if (blanklines_around_conditional_compilation) {
| 256
257 while (1) {
258 if (*p == ' ')
259 col++;
260 else if (*p == '\t')
261 col = ((col - 1) & ~7) + 9;
262 else
263 break;
264 p++;
265 }
266 if (col > ps.ind_size)
267 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
268 }
269 if (troff) {
270 const char *p = in_name,
271 *beg = in_name;
272
273 while (*p)
274 if (*p++ == '/')
275 beg = p;
276 fprintf(output, ".Fn \"%s\"\n", beg);
277 }
278 /*
279 * START OF MAIN LOOP
280 */
281
282 while (1) { /* this is the main loop. it will go until we
283 * reach eof */
284 int is_procname;
285
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];
290
291 /*
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.
295 */
296
297 flushed_nl = false;
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 */
304 switch (type_code) {
305 case newline:
306 ++line_no;
307 flushed_nl = true;
308 case form_feed:
309 break; /* form feeds and newlines found here will be
310 * ignored */
311
312 case lbrace: /* this is a brace that starts the compound
313 * stmt */
314 if (sc_end == 0) { /* ignore buffering if a comment wasnt
315 * stored up */
316 ps.search_brace = false;
317 goto check_type;
318 }
319 if (btype_2) {
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
323 * this loop */
324 }
325 case comment: /* we have a comment, so we must copy it into
326 * the buffer */
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]);
332 }
333 else {
334 *sc_end++ = '\n'; /* add newline between
335 * comments */
336 *sc_end++ = ' ';
337 --line_no;
338 }
339 *sc_end++ = '/'; /* copy in start of comment */
340 *sc_end++ = '*';
341
342 for (;;) { /* loop until we get to the end of the comment */
343 *sc_end = *buf_ptr++;
344 if (buf_ptr >= buf_end)
345 fill_buffer();
346
347 if (*sc_end++ == '*' && *buf_ptr == '/')
348 break; /* we are at end of comment */
349
350 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
351 * overflow */
352 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
353 fflush(output);
354 exit(1);
355 }
356 }
357 *sc_end++ = '/'; /* add ending slash */
358 if (++buf_ptr >= buf_end) /* get past / in buffer */
359 fill_buffer();
360 break;
361 }
362 default: /* it is the start of a normal statment */
363 if (flushed_nl) /* if we flushed a newline, make sure it is
364 * put back */
365 force_nl = true;
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] == '}'))
370 force_nl = false;
371
372 if (sc_end == 0) { /* ignore buffering if comment wasnt
373 * saved up */
374 ps.search_brace = false;
375 goto check_type;
376 }
377 if (force_nl) { /* if we should insert a nl here, put it into
378 * the buffer */
379 force_nl = false;
380 --line_no; /* this will be re-increased when the nl is
381 * read from the buffer */
382 *sc_end++ = '\n';
383 *sc_end++ = ' ';
384 if (verbose && !flushed_nl) /* print error msg if the line
385 * was not already broken */
386 diag2(0, "Line broken");
387 flushed_nl = false;
388 }
389 for (t_ptr = token; *t_ptr; ++t_ptr)
390 *sc_end++ = *t_ptr; /* copy token into temp buffer */
391 ps.procname[0] = 0;
392
393 sw_buffer:
394 ps.search_brace = false; /* stop looking for start of
395 * stmt */
396 bp_save = buf_ptr; /* save current input buffer */
397 be_save = buf_end;
398 buf_ptr = save_com; /* fix so that subsequent calls to
399 * lexi will take tokens out of
400 * save_com */
401 *sc_end++ = ' ';/* add trailing blank, just in case */
402 buf_end = sc_end;
403 sc_end = 0;
404 break;
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)
413 flushed_nl = 0;
414 } /* end of while (search_brace) */
415 last_else = 0;
416check_type:
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 */
420 dump_line();
421 if (ps.tos > 1) /* check for balanced braces */
422 diag2(1, "Stuff missing from end of file.");
423
424 if (verbose) {
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);
429 }
430 fflush(output);
431 exit(found_err);
432 }
433 if (
434 (type_code != comment) &&
435 (type_code != newline) &&
436 (type_code != preesc) &&
437 (type_code != form_feed)) {
438 if (force_nl &&
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");
444 flushed_nl = false;
445 dump_line();
446 ps.want_blank = false; /* dont insert blank at line start */
447 force_nl = false;
448 }
449 ps.in_stmt = true; /* turn on flag which causes an extra level of
450 * indentation. this is turned off by a ; or
451 * '}' */
452 if (s_com != e_com) { /* the turkey has embedded a comment
453 * in a line. fix it */
454 *e_code++ = ' ';
455 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
456 CHECK_SIZE_CODE;
457 *e_code++ = *t_ptr;
458 }
459 *e_code++ = ' ';
460 *e_code = '\0'; /* null terminate code sect */
461 ps.want_blank = false;
462 e_com = s_com;
463 }
464 }
465 else if (type_code != comment) /* preserve force_nl thru a comment */
466 force_nl = false; /* cancel forced newline after newline, form
467 * feed, etc */
468
469
470
471 /*-----------------------------------------------------*\
472 | do switch on type of token scanned |
473 \*-----------------------------------------------------*/
474 CHECK_SIZE_CODE;
475 switch (type_code) { /* now, decide what to do with the token */
476
477 case form_feed: /* found a form feed in line */
478 ps.use_ff = true; /* a form feed is treated much like a newline */
479 dump_line();
480 ps.want_blank = false;
481 break;
482
483 case newline:
484 if (ps.last_token != comma || ps.p_l_follow > 0
485 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
486 dump_line();
487 ps.want_blank = false;
488 }
489 ++line_no; /* keep track of input line number */
490 break;
491
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))))
497 *e_code++ = ' ';
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);
503 }
504 else {
505 while ((e_code - s_code) < dec_ind) {
506 CHECK_SIZE_CODE;
507 *e_code++ = ' ';
508 }
509 *e_code++ = token[0];
510 }
511 else
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) {
519 /*
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.
522 * "int a(x) {..."
523 */
524 parse(semicolon); /* I said this was a kluge... */
525 ps.in_or_st = false; /* turn off flag for structure decl or
526 * initialization */
527 }
528 if (ps.sizeof_keyword)
529 ps.sizeof_mask |= 1 << ps.p_l_follow;
530 break;
531
532 case rparen: /* got a ')' or ']' */
533 rparen_count--;
534 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
535 ps.last_u_d = true;
536 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
537 ps.want_blank = false;
538 } else
539 ps.want_blank = true;
540 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
541 if (--ps.p_l_follow < 0) {
542 ps.p_l_follow = 0;
543 diag3(0, "Extra %c", *token);
544 }
545 if (e_code == s_code) /* if the paren starts the line */
546 ps.paren_level = ps.p_l_follow; /* then indent it */
547
548 *e_code++ = token[0];
549
550 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
551 * (...), or some such */
552 sp_sw = false;
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
557 * indentation */
558
559 parse(hd_type); /* let parser worry about if, or whatever */
560 }
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
564 * place */
565 break;
566
567 case unary_op: /* this could be any unary operation */
568 if (ps.want_blank)
569 *e_code++ = ' ';
570
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);
575 }
576 else {
577 const char *res = token;
578
579 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
580 * in a declaration, we
581 * should indent this
582 * token */
583 for (i = 0; token[i]; ++i); /* find length of token */
584 while ((e_code - s_code) < (dec_ind - i)) {
585 CHECK_SIZE_CODE;
586 *e_code++ = ' '; /* pad it */
587 }
588 }
589 if (troff && token[0] == '-' && token[1] == '>')
590 res = "\\(->";
591 for (t_ptr = res; *t_ptr; ++t_ptr) {
592 CHECK_SIZE_CODE;
593 *e_code++ = *t_ptr;
594 }
595 }
596 ps.want_blank = false;
597 break;
598
599 case binary_op: /* any binary operation */
600 if (ps.want_blank)
601 *e_code++ = ' ';
602 {
603 const char *res = token;
604
605 if (troff)
606 switch (token[0]) {
607 case '<':
608 if (token[1] == '=')
609 res = "\\(<=";
610 break;
611 case '>':
612 if (token[1] == '=')
613 res = "\\(>=";
614 break;
615 case '!':
616 if (token[1] == '=')
617 res = "\\(!=";
618 break;
619 case '|':
620 if (token[1] == '|')
621 res = "\\(br\\(br";
622 else if (token[1] == 0)
623 res = "\\(br";
624 break;
625 }
626 for (t_ptr = res; *t_ptr; ++t_ptr) {
627 CHECK_SIZE_CODE;
628 *e_code++ = *t_ptr; /* move the operator */
629 }
630 }
631 ps.want_blank = true;
632 break;
633
634 case postop: /* got a trailing ++ or -- */
635 *e_code++ = token[0];
636 *e_code++ = token[1];
637 ps.want_blank = true;
638 break;
639
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 */
644 if (ps.want_blank)
645 *e_code++ = ' ';
646 *e_code++ = '?';
647 ps.want_blank = true;
648 break;
649
650 case casestmt: /* got word 'case' or 'default' */
651 scase = true; /* so we can process the later colon properly */
652 goto copy_id;
653
654 case colon: /* got a ':' */
655 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
656 --squest;
657 if (ps.want_blank)
658 *e_code++ = ' ';
659 *e_code++ = ':';
660 ps.want_blank = true;
661 break;
662 }
663 if (ps.in_decl) {
664 *e_code++ = ':';
665 ps.want_blank = false;
666 break;
667 }
668 ps.in_stmt = false; /* seeing a label does not imply we are in a
669 * stmt */
670 for (t_ptr = s_code; *t_ptr; ++t_ptr)
671 *e_lab++ = *t_ptr; /* turn everything so far into a label */
672 e_code = s_code;
673 *e_lab++ = ':';
674 *e_lab++ = ' ';
675 *e_lab = '\0';
676
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 */
682 scase = false;
683 ps.want_blank = false;
684 break;
685
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 */
690 squest = 0;
691 if (ps.last_token == rparen && rparen_count == 0)
692 ps.in_parameter_declaration = 0;
693 ps.cast_mask = 0;
694 ps.sizeof_mask = 0;
695 ps.block_init = 0;
696 ps.block_init_level = 0;
697 ps.just_saw_decl--;
698
699 if (ps.in_decl && s_code == e_code && !ps.block_init)
700 while ((e_code - s_code) < (dec_ind - 1)) {
701 CHECK_SIZE_CODE;
702 *e_code++ = ' ';
703 }
704
705 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
706 * structure declaration, we
707 * arent any more */
708
709 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
710
711 /*
712 * This should be true iff there were unbalanced parens in the
713 * stmt. It is a bit complicated, because the semicolon might
714 * be in a for stmt
715 */
716 diag2(1, "Unbalanced parens");
717 ps.p_l_follow = 0;
718 if (sp_sw) { /* this is a check for a if, while, etc. with
719 * unbalanced parens */
720 sp_sw = false;
721 parse(hd_type); /* dont lose the if, or whatever */
722 }
723 }
724 *e_code++ = ';';
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 */
728
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 */
732 }
733 break;
734
735 case lbrace: /* got a '{' */
736 ps.in_stmt = false; /* dont indent the {} */
737 if (!ps.block_init)
738 force_nl = true;/* force other stuff on same line as '{' onto
739 * new line */
740 else if (ps.block_init_level <= 0)
741 ps.block_init_level = 1;
742 else
743 ps.block_init_level++;
744
745 if (s_code != e_code && !ps.block_init) {
746 if (!btype_2) {
747 dump_line();
748 ps.want_blank = false;
749 }
750 else if (ps.in_parameter_declaration && !ps.in_or_st) {
751 ps.i_l_follow = 0;
752 dump_line();
753 ps.want_blank = false;
754 }
755 }
756 if (ps.in_parameter_declaration)
757 prefix_blankline_requested = 0;
758
759 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
760 * parens */
761 diag2(1, "Unbalanced parens");
762 ps.p_l_follow = 0;
763 if (sp_sw) { /* check for unclosed if, for, etc. */
764 sp_sw = false;
765 parse(hd_type);
766 ps.ind_level = ps.i_l_follow;
767 }
768 }
769 if (s_code == e_code)
770 ps.ind_stmt = false; /* dont put extra indentation on line
771 * with '{' */
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;
775 /* ? dec_ind = 0; */
776 }
777 else {
778 ps.decl_on_line = false; /* we cant be in the middle of
779 * a declaration, so dont do
780 * special indentation of
781 * comments */
782 if (blanklines_after_declarations_at_proctop
783 && ps.in_parameter_declaration)
784 postfix_blankline_requested = 1;
785 ps.in_parameter_declaration = 0;
786 }
787 dec_ind = 0;
788 parse(lbrace); /* let parser know about this */
789 if (ps.want_blank) /* put a blank before '{' if '{' is not at
790 * start of line */
791 *e_code++ = ' ';
792 ps.want_blank = false;
793 *e_code++ = '{';
794 ps.just_saw_decl = 0;
795 break;
796
797 case rbrace: /* got a '}' */
798 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
799 * omitted in
800 * declarations */
801 parse(semicolon);
802 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
803 diag2(1, "Unbalanced parens");
804 ps.p_l_follow = 0;
805 sp_sw = false;
806 }
807 ps.just_saw_decl = 0;
808 ps.block_init_level--;
809 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
810 * line */
811 if (verbose)
812 diag2(0, "Line broken");
813 dump_line();
814 }
815 *e_code++ = '}';
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
819 * declaration */
820 dec_ind = di_stack[--ps.dec_nest];
821 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
822 ps.just_saw_decl = 2;
823 ps.in_decl = true;
824 }
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;
831 break;
832
833 case swstmt: /* got keyword "switch" */
834 sp_sw = true;
835 hd_type = swstmt; /* keep this for when we have seen the
836 * expression */
837 goto copy_id; /* go move the token into buffer */
838
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));
844
845 /*
846 * remember the type of header for later use by parser
847 */
848 goto copy_id; /* copy the token into line */
849
850 case sp_nparen: /* got else, do */
851 ps.in_stmt = false;
852 if (*token == 'e') {
853 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
854 if (verbose)
855 diag2(0, "Line broken");
856 dump_line();/* make sure this starts a line */
857 ps.want_blank = false;
858 }
859 force_nl = true;/* also, following stuff must go onto new line */
860 last_else = 1;
861 parse(elselit);
862 }
863 else {
864 if (e_code != s_code) { /* make sure this starts a line */
865 if (verbose)
866 diag2(0, "Line broken");
867 dump_line();
868 ps.want_blank = false;
869 }
870 force_nl = true;/* also, following stuff must go onto new line */
871 last_else = 0;
872 parse(dolit);
873 }
874 goto copy_id; /* move the token into line */
875
876 case decl: /* we have a declaration type (int, register,
877 * etc.) */
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) {
882 dump_line();
883 ps.want_blank = 0;
884 }
885 }
886 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
887 ps.ind_level = ps.i_l_follow = 1;
888 ps.ind_stmt = 0;
889 }
890 ps.in_or_st = true; /* this might be a structure or initialization
891 * declaration */
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 */
897
898 /*
899 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
900 * : i);
901 */
902 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
903 goto copy_id;
904
905 case ident: /* got an identifier or constant */
906 if (ps.in_decl) { /* if we are in a declaration, we must indent
907 * identifier */
908 if (ps.want_blank)
909 *e_code++ = ' ';
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);
917 } else {
918 while ((e_code - s_code) < dec_ind) {
919 CHECK_SIZE_CODE;
920 *e_code++ = ' ';
921 }
922 }
923 }
924 } else {
925 if (dec_ind && s_code != e_code)
926 dump_line();
927 dec_ind = 0;
928 ps.want_blank = false;
929 }
930 }
931 else if (sp_sw && ps.p_l_follow == 0) {
932 sp_sw = false;
933 force_nl = true;
934 ps.last_u_d = true;
935 ps.in_stmt = false;
936 parse(hd_type);
937 }
938 copy_id:
939 if (ps.want_blank)
940 *e_code++ = ' ';
941 if (troff && ps.its_a_keyword) {
942 e_code = chfont(&bodyf, &keywordf, e_code);
943 for (t_ptr = token; *t_ptr; ++t_ptr) {
944 CHECK_SIZE_CODE;
945 *e_code++ = keywordf.allcaps && islower(*t_ptr)
946 ? toupper(*t_ptr) : *t_ptr;
947 }
948 e_code = chfont(&keywordf, &bodyf, e_code);
949 }
950 else
951 for (t_ptr = token; *t_ptr; ++t_ptr) {
952 CHECK_SIZE_CODE;
953 *e_code++ = *t_ptr;
954 }
955 ps.want_blank = true;
956 break;
957
958 case period: /* treat a period kind of like a binary
959 * operation */
960 *e_code++ = '.'; /* move the period into line */
961 ps.want_blank = false; /* dont put a blank after a period */
962 break;
963
964 case comma:
965 ps.want_blank = (s_code != e_code); /* only put blank after comma
966 * if comma does not start the
967 * line */
968 if (ps.in_decl && is_procname == 0 && !ps.block_init)
969 while ((e_code - s_code) < (dec_ind - 1)) {
970 CHECK_SIZE_CODE;
971 *e_code++ = ' ';
972 }
973
974 *e_code++ = ',';
975 if (ps.p_l_follow == 0) {
976 if (ps.block_init_level <= 0)
977 ps.block_init = 0;
978 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
979 force_nl = true;
980 }
981 break;
982
983 case preesc: /* got the character '#' */
984 if ((s_com != e_com) ||
985 (s_lab != e_lab) ||
986 (s_code != e_code))
987 dump_line();
988 *e_lab++ = '#'; /* move whole line to 'label' buffer */
989 {
990 int in_comment = 0;
991 int com_start = 0;
992 char quote = 0;
993 int com_end = 0;
994
995 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
996 buf_ptr++;
997 if (buf_ptr >= buf_end)
998 fill_buffer();
999 }
1000 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1001 CHECK_SIZE_LAB;
1002 *e_lab = *buf_ptr++;
1003 if (buf_ptr >= buf_end)
1004 fill_buffer();
1005 switch (*e_lab++) {
1006 case BACKSLASH:
1007 if (troff)
1008 *e_lab++ = BACKSLASH;
1009 if (!in_comment) {
1010 *e_lab++ = *buf_ptr++;
1011 if (buf_ptr >= buf_end)
1012 fill_buffer();
1013 }
1014 break;
1015 case '/':
1016 if (*buf_ptr == '*' && !in_comment && !quote) {
1017 in_comment = 1;
1018 *e_lab++ = *buf_ptr++;
1019 com_start = e_lab - s_lab - 2;
1020 }
1021 break;
1022 case '"':
1023 if (quote == '"')
1024 quote = 0;
1025 break;
1026 case '\'':
1027 if (quote == '\'')
1028 quote = 0;
1029 break;
1030 case '*':
1031 if (*buf_ptr == '/' && in_comment) {
1032 in_comment = 0;
1033 *e_lab++ = *buf_ptr++;
1034 com_end = e_lab - s_lab;
1035 }
1036 break;
1037 }
1038 }
1039
1040 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1041 e_lab--;
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]);
1047 else {
1048 *sc_end++ = '\n'; /* add newline between
1049 * comments */
1050 *sc_end++ = ' ';
1051 --line_no;
1052 }
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])
1056 abort();
1057 e_lab = s_lab + com_start;
1058 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1059 e_lab--;
1060 bp_save = buf_ptr; /* save current input buffer */
1061 be_save = buf_end;
1062 buf_ptr = save_com; /* fix so that subsequent calls to
1063 * lexi will take tokens out of
1064 * save_com */
1065 *sc_end++ = ' '; /* add trailing blank, just in case */
1066 buf_end = sc_end;
1067 sc_end = 0;
1068 }
1069 *e_lab = '\0'; /* null terminate line */
1070 ps.pcase = false;
1071 }
1072
1073 if (strncmp(s_lab, "#if", 3) == 0) {
1074 if (blanklines_around_conditional_compilation) {
|
1075 register int c;
| 1075 int c;
|
1076 prefix_blankline_requested++;
1077 while ((c = getc(input)) == '\n');
1078 ungetc(c, input);
1079 }
1080 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1081 match_state[ifdef_level].tos = -1;
1082 state_stack[ifdef_level++] = ps;
1083 }
1084 else
1085 diag2(1, "#if stack overflow");
1086 }
1087 else if (strncmp(s_lab, "#else", 5) == 0)
1088 if (ifdef_level <= 0)
1089 diag2(1, "Unmatched #else");
1090 else {
1091 match_state[ifdef_level - 1] = ps;
1092 ps = state_stack[ifdef_level - 1];
1093 }
1094 else if (strncmp(s_lab, "#endif", 6) == 0) {
1095 if (ifdef_level <= 0)
1096 diag2(1, "Unmatched #endif");
1097 else {
1098 ifdef_level--;
1099
1100#ifdef undef
1101 /*
1102 * This match needs to be more intelligent before the
1103 * message is useful
1104 */
1105 if (match_state[ifdef_level].tos >= 0
1106 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1107 diag2(0, "Syntactically inconsistant #ifdef alternatives.");
1108#endif
1109 }
1110 if (blanklines_around_conditional_compilation) {
1111 postfix_blankline_requested++;
1112 n_real_blanklines = 0;
1113 }
1114 }
1115 break; /* subsequent processing of the newline
1116 * character will cause the line to be printed */
1117
1118 case comment: /* we have gotten a / followed by * this is a biggie */
1119 if (flushed_nl) { /* we should force a broken line here */
1120 flushed_nl = false;
1121 dump_line();
1122 ps.want_blank = false; /* dont insert blank at line start */
1123 force_nl = false;
1124 }
1125 pr_comment();
1126 break;
1127 } /* end of big switch stmt */
1128
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 */
1133}
1134
1135/*
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
1139 */
1140static void
1141bakcopy(void)
1142{
1143 int n,
1144 bakchn;
1145 char buff[8 * 1024];
1146 const char *p;
1147
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 '/' */
1151 p--;
1152 if (*p == '/')
1153 p++;
1154 sprintf(bakfile, "%s.BAK", p);
1155
1156 /* copy in_name to backup file */
1157 bakchn = creat(bakfile, 0600);
1158 if (bakchn < 0)
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);
1163 if (n < 0)
1164 err(1, "%s", in_name);
1165 close(bakchn);
1166 fclose(input);
1167
1168 /* re-open backup file as the input file */
1169 input = fopen(bakfile, "r");
1170 if (input == 0)
1171 err(1, "%s", bakfile);
1172 /* now the original input file will be the output */
1173 output = fopen(in_name, "w");
1174 if (output == 0) {
1175 unlink(bakfile);
1176 err(1, "%s", in_name);
1177 }
1178}
| 1076 prefix_blankline_requested++;
1077 while ((c = getc(input)) == '\n');
1078 ungetc(c, input);
1079 }
1080 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1081 match_state[ifdef_level].tos = -1;
1082 state_stack[ifdef_level++] = ps;
1083 }
1084 else
1085 diag2(1, "#if stack overflow");
1086 }
1087 else if (strncmp(s_lab, "#else", 5) == 0)
1088 if (ifdef_level <= 0)
1089 diag2(1, "Unmatched #else");
1090 else {
1091 match_state[ifdef_level - 1] = ps;
1092 ps = state_stack[ifdef_level - 1];
1093 }
1094 else if (strncmp(s_lab, "#endif", 6) == 0) {
1095 if (ifdef_level <= 0)
1096 diag2(1, "Unmatched #endif");
1097 else {
1098 ifdef_level--;
1099
1100#ifdef undef
1101 /*
1102 * This match needs to be more intelligent before the
1103 * message is useful
1104 */
1105 if (match_state[ifdef_level].tos >= 0
1106 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1107 diag2(0, "Syntactically inconsistant #ifdef alternatives.");
1108#endif
1109 }
1110 if (blanklines_around_conditional_compilation) {
1111 postfix_blankline_requested++;
1112 n_real_blanklines = 0;
1113 }
1114 }
1115 break; /* subsequent processing of the newline
1116 * character will cause the line to be printed */
1117
1118 case comment: /* we have gotten a / followed by * this is a biggie */
1119 if (flushed_nl) { /* we should force a broken line here */
1120 flushed_nl = false;
1121 dump_line();
1122 ps.want_blank = false; /* dont insert blank at line start */
1123 force_nl = false;
1124 }
1125 pr_comment();
1126 break;
1127 } /* end of big switch stmt */
1128
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 */
1133}
1134
1135/*
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
1139 */
1140static void
1141bakcopy(void)
1142{
1143 int n,
1144 bakchn;
1145 char buff[8 * 1024];
1146 const char *p;
1147
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 '/' */
1151 p--;
1152 if (*p == '/')
1153 p++;
1154 sprintf(bakfile, "%s.BAK", p);
1155
1156 /* copy in_name to backup file */
1157 bakchn = creat(bakfile, 0600);
1158 if (bakchn < 0)
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);
1163 if (n < 0)
1164 err(1, "%s", in_name);
1165 close(bakchn);
1166 fclose(input);
1167
1168 /* re-open backup file as the input file */
1169 input = fopen(bakfile, "r");
1170 if (input == 0)
1171 err(1, "%s", bakfile);
1172 /* now the original input file will be the output */
1173 output = fopen(in_name, "w");
1174 if (output == 0) {
1175 unlink(bakfile);
1176 err(1, "%s", in_name);
1177 }
1178}
|