1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1985 Sun Microsystems, Inc. 5 * Copyright (c) 1980, 1993 6 * The Regents of the University of California. All rights reserved. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93"; 41 #endif /* not lint */ 42 #endif 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include "indent_globs.h" 53 #include "indent.h" 54 55 int comment_open; 56 static int paren_target; 57 static int pad_output(int current, int target); 58 59 void 60 dump_line(void) 61 { /* dump_line is the routine that actually 62 * effects the printing of the new source. It 63 * prints the label section, followed by the 64 * code section with the appropriate nesting 65 * level, followed by any comments */ 66 int cur_col, 67 target_col = 1; 68 static int not_first_line; 69 70 if (ps.procname[0]) { 71 ps.ind_level = 0; 72 ps.procname[0] = 0; 73 } 74 if (s_code == e_code && s_lab == e_lab && s_com == e_com) { 75 if (suppress_blanklines > 0) 76 suppress_blanklines--; 77 else { 78 ps.bl_line = true; 79 n_real_blanklines++; 80 } 81 } 82 else if (!inhibit_formatting) { 83 suppress_blanklines = 0; 84 ps.bl_line = false; 85 if (prefix_blankline_requested && not_first_line) { 86 if (swallow_optional_blanklines) { 87 if (n_real_blanklines == 1) 88 n_real_blanklines = 0; 89 } 90 else { 91 if (n_real_blanklines == 0) 92 n_real_blanklines = 1; 93 } 94 } 95 while (--n_real_blanklines >= 0) 96 putc('\n', output); 97 n_real_blanklines = 0; 98 if (ps.ind_level == 0) 99 ps.ind_stmt = 0; /* this is a class A kludge. dont do 100 * additional statement indentation if we are 101 * at bracket level 0 */ 102 103 if (e_lab != s_lab || e_code != s_code) 104 ++code_lines; /* keep count of lines with code */ 105 106 107 if (e_lab != s_lab) { /* print lab, if any */ 108 if (comment_open) { 109 comment_open = 0; 110 fprintf(output, ".*/\n"); 111 } 112 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 113 e_lab--; 114 *e_lab = '\0'; 115 cur_col = pad_output(1, compute_label_target()); 116 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 117 || strncmp(s_lab, "#endif", 6) == 0)) { 118 char *s = s_lab; 119 if (e_lab[-1] == '\n') e_lab--; 120 do putc(*s++, output); 121 while (s < e_lab && 'a' <= *s && *s<='z'); 122 while ((*s == ' ' || *s == '\t') && s < e_lab) 123 s++; 124 if (s < e_lab) 125 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 126 (int)(e_lab - s), s); 127 } 128 else fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab); 129 cur_col = count_spaces(cur_col, s_lab); 130 } 131 else 132 cur_col = 1; /* there is no label section */ 133 134 ps.pcase = false; 135 136 if (s_code != e_code) { /* print code section, if any */ 137 char *p; 138 139 if (comment_open) { 140 comment_open = 0; 141 fprintf(output, ".*/\n"); 142 } 143 target_col = compute_code_target(); 144 { 145 int i; 146 147 for (i = 0; i < ps.p_l_follow; i++) 148 if (ps.paren_indents[i] >= 0) 149 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 150 } 151 cur_col = pad_output(cur_col, target_col); 152 for (p = s_code; p < e_code; p++) 153 if (*p == (char) 0200) 154 fprintf(output, "%d", target_col * 7); 155 else 156 putc(*p, output); 157 cur_col = count_spaces(cur_col, s_code); 158 } 159 if (s_com != e_com) { /* print comment, if any */ 160 int target = ps.com_col; 161 char *com_st = s_com; 162 163 target += ps.comment_delta; 164 while (*com_st == '\t') /* consider original indentation in 165 * case this is a box comment */ 166 com_st++, target += tabsize; 167 while (target <= 0) 168 if (*com_st == ' ') 169 target++, com_st++; 170 else if (*com_st == '\t') 171 target = tabsize * (1 + (target - 1) / tabsize) + 1, com_st++; 172 else 173 target = 1; 174 if (cur_col > target) { /* if comment can't fit on this line, 175 * put it on next line */ 176 putc('\n', output); 177 cur_col = 1; 178 ++ps.out_lines; 179 } 180 while (e_com > com_st && isspace((unsigned char)e_com[-1])) 181 e_com--; 182 (void)pad_output(cur_col, target); 183 fwrite(com_st, e_com - com_st, 1, output); 184 ps.comment_delta = ps.n_comment_delta; 185 ++ps.com_lines; /* count lines with comments */ 186 } 187 if (ps.use_ff) 188 putc('\014', output); 189 else 190 putc('\n', output); 191 ++ps.out_lines; 192 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 193 prefix_blankline_requested = 1; 194 ps.just_saw_decl = 0; 195 } 196 else 197 prefix_blankline_requested = postfix_blankline_requested; 198 postfix_blankline_requested = 0; 199 } 200 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 201 * declaration, remember that fact for 202 * proper comment indentation */ 203 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 204 * indented if we have not 205 * completed this stmt and if 206 * we are not in the middle of 207 * a declaration */ 208 ps.use_ff = false; 209 ps.dumped_decl_indent = 0; 210 *(e_lab = s_lab) = '\0'; /* reset buffers */ 211 *(e_code = s_code) = '\0'; 212 *(e_com = s_com = combuf + 1) = '\0'; 213 ps.ind_level = ps.i_l_follow; 214 ps.paren_level = ps.p_l_follow; 215 if (ps.paren_level > 0) 216 paren_target = -ps.paren_indents[ps.paren_level - 1]; 217 not_first_line = 1; 218 } 219 220 int 221 compute_code_target(void) 222 { 223 int target_col = ps.ind_size * ps.ind_level + 1; 224 225 if (ps.paren_level) 226 if (!lineup_to_parens) 227 target_col += continuation_indent 228 * (2 * continuation_indent == ps.ind_size ? 1 : ps.paren_level); 229 else if (lineup_to_parens_always) 230 target_col = paren_target; 231 else { 232 int w; 233 int t = paren_target; 234 235 if ((w = count_spaces(t, s_code) - max_col) > 0 236 && count_spaces(target_col, s_code) <= max_col) { 237 t -= w + 1; 238 if (t > target_col) 239 target_col = t; 240 } 241 else 242 target_col = t; 243 } 244 else if (ps.ind_stmt) 245 target_col += continuation_indent; 246 return target_col; 247 } 248 249 int 250 compute_label_target(void) 251 { 252 return 253 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 254 : *s_lab == '#' ? 1 255 : ps.ind_size * (ps.ind_level - label_offset) + 1; 256 } 257 258 259 /* 260 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 261 * 262 * All rights reserved 263 * 264 * 265 * NAME: fill_buffer 266 * 267 * FUNCTION: Reads one block of input into input_buffer 268 * 269 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 270 * Willcox of CAC Added check for switch back to partly full input 271 * buffer from temporary buffer 272 * 273 */ 274 void 275 fill_buffer(void) 276 { /* this routine reads stuff from the input */ 277 char *p; 278 int i; 279 FILE *f = input; 280 281 if (bp_save != NULL) { /* there is a partly filled input buffer left */ 282 buf_ptr = bp_save; /* do not read anything, just switch buffers */ 283 buf_end = be_save; 284 bp_save = be_save = NULL; 285 if (buf_ptr < buf_end) 286 return; /* only return if there is really something in 287 * this buffer */ 288 } 289 for (p = in_buffer;;) { 290 if (p >= in_buffer_limit) { 291 int size = (in_buffer_limit - in_buffer) * 2 + 10; 292 int offset = p - in_buffer; 293 in_buffer = realloc(in_buffer, size); 294 if (in_buffer == NULL) 295 errx(1, "input line too long"); 296 p = in_buffer + offset; 297 in_buffer_limit = in_buffer + size - 2; 298 } 299 if ((i = getc(f)) == EOF) { 300 *p++ = ' '; 301 *p++ = '\n'; 302 had_eof = true; 303 break; 304 } 305 if (i != '\0') 306 *p++ = i; 307 if (i == '\n') 308 break; 309 } 310 buf_ptr = in_buffer; 311 buf_end = p; 312 if (p - in_buffer > 2 && p[-2] == '/' && p[-3] == '*') { 313 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 314 fill_buffer(); /* flush indent error message */ 315 else { 316 int com = 0; 317 318 p = in_buffer; 319 while (*p == ' ' || *p == '\t') 320 p++; 321 if (*p == '/' && p[1] == '*') { 322 p += 2; 323 while (*p == ' ' || *p == '\t') 324 p++; 325 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 326 && p[4] == 'N' && p[5] == 'T') { 327 p += 6; 328 while (*p == ' ' || *p == '\t') 329 p++; 330 if (*p == '*') 331 com = 1; 332 else if (*p == 'O') { 333 if (*++p == 'N') 334 p++, com = 1; 335 else if (*p == 'F' && *++p == 'F') 336 p++, com = 2; 337 } 338 while (*p == ' ' || *p == '\t') 339 p++; 340 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 341 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 342 dump_line(); 343 if (!(inhibit_formatting = com - 1)) { 344 n_real_blanklines = 0; 345 postfix_blankline_requested = 0; 346 prefix_blankline_requested = 0; 347 suppress_blanklines = 1; 348 } 349 } 350 } 351 } 352 } 353 } 354 if (inhibit_formatting) { 355 p = in_buffer; 356 do 357 putc(*p, output); 358 while (*p++ != '\n'); 359 } 360 } 361 362 /* 363 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 364 * 365 * All rights reserved 366 * 367 * 368 * NAME: pad_output 369 * 370 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 371 * position. 372 * 373 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 374 * 375 * PARAMETERS: current integer The current column target 376 * nteger The desired column 377 * 378 * RETURNS: Integer value of the new column. (If current >= target, no action is 379 * taken, and current is returned. 380 * 381 * GLOBALS: None 382 * 383 * CALLS: write (sys) 384 * 385 * CALLED BY: dump_line 386 * 387 * HISTORY: initial coding November 1976 D A Willcox of CAC 388 * 389 */ 390 static int 391 pad_output(int current, int target) 392 /* writes tabs and blanks (if necessary) to 393 * get the current output position up to the 394 * target column */ 395 /* current: the current column value */ 396 /* target: position we want it at */ 397 { 398 int curr; /* internal column pointer */ 399 400 if (current >= target) 401 return (current); /* line is already long enough */ 402 curr = current; 403 if (use_tabs) { 404 int tcur; 405 406 while ((tcur = tabsize * (1 + (curr - 1) / tabsize) + 1) <= target) { 407 putc('\t', output); 408 curr = tcur; 409 } 410 } 411 while (curr++ < target) 412 putc(' ', output); /* pad with final blanks */ 413 414 return (target); 415 } 416 417 /* 418 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 419 * 420 * All rights reserved 421 * 422 * 423 * NAME: count_spaces 424 * 425 * FUNCTION: Find out where printing of a given string will leave the current 426 * character position on output. 427 * 428 * ALGORITHM: Run thru input string and add appropriate values to current 429 * position. 430 * 431 * RETURNS: Integer value of position after printing "buffer" starting in column 432 * "current". 433 * 434 * HISTORY: initial coding November 1976 D A Willcox of CAC 435 * 436 */ 437 int 438 count_spaces_until(int cur, char *buffer, char *end) 439 /* 440 * this routine figures out where the character position will be after 441 * printing the text in buffer starting at column "current" 442 */ 443 { 444 char *buf; /* used to look thru buffer */ 445 446 for (buf = buffer; *buf != '\0' && buf != end; ++buf) { 447 switch (*buf) { 448 449 case '\n': 450 case 014: /* form feed */ 451 cur = 1; 452 break; 453 454 case '\t': 455 cur = tabsize * (1 + (cur - 1) / tabsize) + 1; 456 break; 457 458 case 010: /* backspace */ 459 --cur; 460 break; 461 462 default: 463 ++cur; 464 break; 465 } /* end of switch */ 466 } /* end of for loop */ 467 return (cur); 468 } 469 470 int 471 count_spaces(int cur, char *buffer) 472 { 473 return (count_spaces_until(cur, buffer, NULL)); 474 } 475 476 void 477 diag4(int level, const char *msg, int a, int b) 478 { 479 if (level) 480 found_err = 1; 481 if (output == stdout) { 482 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 483 fprintf(stdout, msg, a, b); 484 fprintf(stdout, " */\n"); 485 } 486 else { 487 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 488 fprintf(stderr, msg, a, b); 489 fprintf(stderr, "\n"); 490 } 491 } 492 493 void 494 diag3(int level, const char *msg, int a) 495 { 496 if (level) 497 found_err = 1; 498 if (output == stdout) { 499 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 500 fprintf(stdout, msg, a); 501 fprintf(stdout, " */\n"); 502 } 503 else { 504 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 505 fprintf(stderr, msg, a); 506 fprintf(stderr, "\n"); 507 } 508 } 509 510 void 511 diag2(int level, const char *msg) 512 { 513 if (level) 514 found_err = 1; 515 if (output == stdout) { 516 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 517 fprintf(stdout, "%s", msg); 518 fprintf(stdout, " */\n"); 519 } 520 else { 521 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 522 fprintf(stderr, "%s", msg); 523 fprintf(stderr, "\n"); 524 } 525 } 526 527