1 /* 2 * Copyright (c) 1985 Sun Microsystems, Inc. 3 * Copyright (c) 1980, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 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 37 #if 0 38 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* not lint */ 43 44 #include <ctype.h> 45 #include <err.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include "indent_globs.h" 50 51 52 int comment_open; 53 static paren_target; 54 55 dump_line() 56 { /* dump_line is the routine that actually 57 * effects the printing of the new source. It 58 * prints the label section, followed by the 59 * code section with the appropriate nesting 60 * level, followed by any comments */ 61 register int cur_col, 62 target_col; 63 static not_first_line; 64 65 if (ps.procname[0]) { 66 if (troff) { 67 if (comment_open) { 68 comment_open = 0; 69 fprintf(output, ".*/\n"); 70 } 71 fprintf(output, ".Pr \"%s\"\n", ps.procname); 72 } 73 ps.ind_level = 0; 74 ps.procname[0] = 0; 75 } 76 if (s_code == e_code && s_lab == e_lab && s_com == e_com) { 77 if (suppress_blanklines > 0) 78 suppress_blanklines--; 79 else { 80 ps.bl_line = true; 81 n_real_blanklines++; 82 } 83 } 84 else if (!inhibit_formatting) { 85 suppress_blanklines = 0; 86 ps.bl_line = false; 87 if (prefix_blankline_requested && not_first_line) { 88 if (swallow_optional_blanklines) { 89 if (n_real_blanklines == 1) 90 n_real_blanklines = 0; 91 } 92 else { 93 if (n_real_blanklines == 0) 94 n_real_blanklines = 1; 95 } 96 } 97 while (--n_real_blanklines >= 0) 98 putc('\n', output); 99 n_real_blanklines = 0; 100 if (ps.ind_level == 0) 101 ps.ind_stmt = 0; /* this is a class A kludge. dont do 102 * additional statement indentation if we are 103 * at bracket level 0 */ 104 105 if (e_lab != s_lab || e_code != s_code) 106 ++code_lines; /* keep count of lines with code */ 107 108 109 if (e_lab != s_lab) { /* print lab, if any */ 110 if (comment_open) { 111 comment_open = 0; 112 fprintf(output, ".*/\n"); 113 } 114 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 115 e_lab--; 116 cur_col = pad_output(1, compute_label_target()); 117 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 118 || strncmp(s_lab, "#endif", 6) == 0)) { 119 register char *s = s_lab; 120 if (e_lab[-1] == '\n') e_lab--; 121 do putc(*s++, output); 122 while (s < e_lab && 'a' <= *s && *s<='z'); 123 while ((*s == ' ' || *s == '\t') && s < e_lab) 124 s++; 125 if (s < e_lab) 126 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 127 e_lab - s, s); 128 } 129 else fprintf(output, "%.*s", e_lab - s_lab, s_lab); 130 cur_col = count_spaces(cur_col, s_lab); 131 } 132 else 133 cur_col = 1; /* there is no label section */ 134 135 ps.pcase = false; 136 137 if (s_code != e_code) { /* print code section, if any */ 138 register char *p; 139 140 if (comment_open) { 141 comment_open = 0; 142 fprintf(output, ".*/\n"); 143 } 144 target_col = compute_code_target(); 145 { 146 register i; 147 148 for (i = 0; i < ps.p_l_follow; i++) 149 if (ps.paren_indents[i] >= 0) 150 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 151 } 152 cur_col = pad_output(cur_col, target_col); 153 for (p = s_code; p < e_code; p++) 154 if (*p == (char) 0200) 155 fprintf(output, "%d", target_col * 7); 156 else 157 putc(*p, output); 158 cur_col = count_spaces(cur_col, s_code); 159 } 160 if (s_com != e_com) 161 if (troff) { 162 int all_here = 0; 163 register char *p; 164 165 if (e_com[-1] == '/' && e_com[-2] == '*') 166 e_com -= 2, all_here++; 167 while (e_com > s_com && e_com[-1] == ' ') 168 e_com--; 169 *e_com = 0; 170 p = s_com; 171 while (*p == ' ') 172 p++; 173 if (p[0] == '/' && p[1] == '*') 174 p += 2, all_here++; 175 else if (p[0] == '*') 176 p += p[1] == '/' ? 2 : 1; 177 while (*p == ' ') 178 p++; 179 if (*p == 0) 180 goto inhibit_newline; 181 if (comment_open < 2 && ps.box_com) { 182 comment_open = 0; 183 fprintf(output, ".*/\n"); 184 } 185 if (comment_open == 0) { 186 if ('a' <= *p && *p <= 'z') 187 *p = *p + 'A' - 'a'; 188 if (e_com - p < 50 && all_here == 2) { 189 register char *follow = p; 190 fprintf(output, "\n.nr C! \\w\1"); 191 while (follow < e_com) { 192 switch (*follow) { 193 case '\n': 194 putc(' ', output); 195 case 1: 196 break; 197 case '\\': 198 putc('\\', output); 199 default: 200 putc(*follow, output); 201 } 202 follow++; 203 } 204 putc(1, output); 205 } 206 fprintf(output, "\n./* %dp %d %dp\n", 207 ps.com_col * 7, 208 (s_code != e_code || s_lab != e_lab) - ps.box_com, 209 target_col * 7); 210 } 211 comment_open = 1 + ps.box_com; 212 while (*p) { 213 if (*p == BACKSLASH) 214 putc(BACKSLASH, output); 215 putc(*p++, output); 216 } 217 } 218 else { /* print comment, if any */ 219 register target = ps.com_col; 220 register char *com_st = s_com; 221 222 target += ps.comment_delta; 223 while (*com_st == '\t') 224 com_st++, target += 8; /* ? */ 225 while (target <= 0) 226 if (*com_st == ' ') 227 target++, com_st++; 228 else if (*com_st == '\t') 229 target = ((target - 1) & ~7) + 9, com_st++; 230 else 231 target = 1; 232 if (cur_col > target) { /* if comment cant fit on this line, 233 * put it on next line */ 234 putc('\n', output); 235 cur_col = 1; 236 ++ps.out_lines; 237 } 238 while (e_com > com_st && isspace(e_com[-1])) 239 e_com--; 240 cur_col = pad_output(cur_col, target); 241 if (!ps.box_com) { 242 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) { 243 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) 244 com_st[1] = '*'; 245 else 246 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); 247 } 248 } 249 fwrite(com_st, e_com - com_st, 1, output); 250 ps.comment_delta = ps.n_comment_delta; 251 cur_col = count_spaces(cur_col, com_st); 252 ++ps.com_lines; /* count lines with comments */ 253 } 254 if (ps.use_ff) 255 putc('\014', output); 256 else 257 putc('\n', output); 258 inhibit_newline: 259 ++ps.out_lines; 260 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 261 prefix_blankline_requested = 1; 262 ps.just_saw_decl = 0; 263 } 264 else 265 prefix_blankline_requested = postfix_blankline_requested; 266 postfix_blankline_requested = 0; 267 } 268 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 269 * declaration, remember that fact for 270 * proper comment indentation */ 271 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 272 * indented if we have not 273 * completed this stmt and if 274 * we are not in the middle of 275 * a declaration */ 276 ps.use_ff = false; 277 ps.dumped_decl_indent = 0; 278 *(e_lab = s_lab) = '\0'; /* reset buffers */ 279 *(e_code = s_code) = '\0'; 280 *(e_com = s_com) = '\0'; 281 ps.ind_level = ps.i_l_follow; 282 ps.paren_level = ps.p_l_follow; 283 paren_target = -ps.paren_indents[ps.paren_level - 1]; 284 not_first_line = 1; 285 return; 286 } 287 288 compute_code_target() 289 { 290 register target_col = ps.ind_size * ps.ind_level + 1; 291 292 if (ps.paren_level) 293 if (!lineup_to_parens) 294 target_col += continuation_indent * ps.paren_level; 295 else { 296 register w; 297 register t = paren_target; 298 299 if ((w = count_spaces(t, s_code) - max_col) > 0 300 && count_spaces(target_col, s_code) <= max_col) { 301 t -= w + 1; 302 if (t > target_col) 303 target_col = t; 304 } 305 else 306 target_col = t; 307 } 308 else if (ps.ind_stmt) 309 target_col += continuation_indent; 310 return target_col; 311 } 312 313 compute_label_target() 314 { 315 return 316 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 317 : *s_lab == '#' ? 1 318 : ps.ind_size * (ps.ind_level - label_offset) + 1; 319 } 320 321 322 /* 323 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 324 * 325 * All rights reserved 326 * 327 * 328 * NAME: fill_buffer 329 * 330 * FUNCTION: Reads one block of input into input_buffer 331 * 332 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 333 * Willcox of CAC Added check for switch back to partly full input 334 * buffer from temporary buffer 335 * 336 */ 337 int 338 fill_buffer() 339 { /* this routine reads stuff from the input */ 340 register char *p; 341 register int i; 342 register FILE *f = input; 343 344 if (bp_save != 0) { /* there is a partly filled input buffer left */ 345 buf_ptr = bp_save; /* dont read anything, just switch buffers */ 346 buf_end = be_save; 347 bp_save = be_save = 0; 348 if (buf_ptr < buf_end) 349 return; /* only return if there is really something in 350 * this buffer */ 351 } 352 for (p = in_buffer;;) { 353 if (p >= in_buffer_limit) { 354 register size = (in_buffer_limit - in_buffer) * 2 + 10; 355 register offset = p - in_buffer; 356 in_buffer = (char *) realloc(in_buffer, size); 357 if (in_buffer == 0) 358 err(1, "input line too long"); 359 p = in_buffer + offset; 360 in_buffer_limit = in_buffer + size - 2; 361 } 362 if ((i = getc(f)) == EOF) { 363 *p++ = ' '; 364 *p++ = '\n'; 365 had_eof = true; 366 break; 367 } 368 *p++ = i; 369 if (i == '\n') 370 break; 371 } 372 buf_ptr = in_buffer; 373 buf_end = p; 374 if (p[-2] == '/' && p[-3] == '*') { 375 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 376 fill_buffer(); /* flush indent error message */ 377 else { 378 int com = 0; 379 380 p = in_buffer; 381 while (*p == ' ' || *p == '\t') 382 p++; 383 if (*p == '/' && p[1] == '*') { 384 p += 2; 385 while (*p == ' ' || *p == '\t') 386 p++; 387 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 388 && p[4] == 'N' && p[5] == 'T') { 389 p += 6; 390 while (*p == ' ' || *p == '\t') 391 p++; 392 if (*p == '*') 393 com = 1; 394 else if (*p == 'O') 395 if (*++p == 'N') 396 p++, com = 1; 397 else if (*p == 'F' && *++p == 'F') 398 p++, com = 2; 399 while (*p == ' ' || *p == '\t') 400 p++; 401 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 402 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 403 dump_line(); 404 if (!(inhibit_formatting = com - 1)) { 405 n_real_blanklines = 0; 406 postfix_blankline_requested = 0; 407 prefix_blankline_requested = 0; 408 suppress_blanklines = 1; 409 } 410 } 411 } 412 } 413 } 414 } 415 if (inhibit_formatting) { 416 p = in_buffer; 417 do 418 putc(*p, output); 419 while (*p++ != '\n'); 420 } 421 return; 422 } 423 424 /* 425 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 426 * 427 * All rights reserved 428 * 429 * 430 * NAME: pad_output 431 * 432 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 433 * position. 434 * 435 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 436 * 437 * PARAMETERS: current integer The current column target 438 * nteger The desired column 439 * 440 * RETURNS: Integer value of the new column. (If current >= target, no action is 441 * taken, and current is returned. 442 * 443 * GLOBALS: None 444 * 445 * CALLS: write (sys) 446 * 447 * CALLED BY: dump_line 448 * 449 * HISTORY: initial coding November 1976 D A Willcox of CAC 450 * 451 */ 452 pad_output(current, target) /* writes tabs and blanks (if necessary) to 453 * get the current output position up to the 454 * target column */ 455 int current; /* the current column value */ 456 int target; /* position we want it at */ 457 { 458 register int curr; /* internal column pointer */ 459 register int tcur; 460 461 if (troff) 462 fprintf(output, "\\h'|%dp'", (target - 1) * 7); 463 else { 464 if (current >= target) 465 return (current); /* line is already long enough */ 466 curr = current; 467 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { 468 putc('\t', output); 469 curr = tcur; 470 } 471 while (curr++ < target) 472 putc(' ', output); /* pad with final blanks */ 473 } 474 return (target); 475 } 476 477 /* 478 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 479 * 480 * All rights reserved 481 * 482 * 483 * NAME: count_spaces 484 * 485 * FUNCTION: Find out where printing of a given string will leave the current 486 * character position on output. 487 * 488 * ALGORITHM: Run thru input string and add appropriate values to current 489 * position. 490 * 491 * RETURNS: Integer value of position after printing "buffer" starting in column 492 * "current". 493 * 494 * HISTORY: initial coding November 1976 D A Willcox of CAC 495 * 496 */ 497 int 498 count_spaces(current, buffer) 499 /* 500 * this routine figures out where the character position will be after 501 * printing the text in buffer starting at column "current" 502 */ 503 int current; 504 char *buffer; 505 { 506 register char *buf; /* used to look thru buffer */ 507 register int cur; /* current character counter */ 508 509 cur = current; 510 511 for (buf = buffer; *buf != '\0'; ++buf) { 512 switch (*buf) { 513 514 case '\n': 515 case 014: /* form feed */ 516 cur = 1; 517 break; 518 519 case '\t': 520 cur = ((cur - 1) & tabmask) + tabsize + 1; 521 break; 522 523 case 010: /* backspace */ 524 --cur; 525 break; 526 527 default: 528 ++cur; 529 break; 530 } /* end of switch */ 531 } /* end of for loop */ 532 return (cur); 533 } 534 535 int found_err; 536 /* VARARGS2 */ 537 diag(level, msg, a, b) 538 char *msg; 539 { 540 if (level) 541 found_err = 1; 542 if (output == stdout) { 543 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 544 fprintf(stdout, msg, a, b); 545 fprintf(stdout, " */\n"); 546 } 547 else { 548 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 549 fprintf(stderr, msg, a, b); 550 fprintf(stderr, "\n"); 551 } 552 } 553 554 writefdef(f, nm) 555 register struct fstate *f; 556 { 557 fprintf(output, ".ds f%c %s\n.nr s%c %d\n", 558 nm, f->font, nm, f->size); 559 } 560 561 char * 562 chfont(of, nf, s) 563 register struct fstate *of, 564 *nf; 565 char *s; 566 { 567 if (of->font[0] != nf->font[0] 568 || of->font[1] != nf->font[1]) { 569 *s++ = '\\'; 570 *s++ = 'f'; 571 if (nf->font[1]) { 572 *s++ = '('; 573 *s++ = nf->font[0]; 574 *s++ = nf->font[1]; 575 } 576 else 577 *s++ = nf->font[0]; 578 } 579 if (nf->size != of->size) { 580 *s++ = '\\'; 581 *s++ = 's'; 582 if (nf->size < of->size) { 583 *s++ = '-'; 584 *s++ = '0' + of->size - nf->size; 585 } 586 else { 587 *s++ = '+'; 588 *s++ = '0' + nf->size - of->size; 589 } 590 } 591 return s; 592 } 593 594 595 parsefont(f, s0) 596 register struct fstate *f; 597 char *s0; 598 { 599 register char *s = s0; 600 int sizedelta = 0; 601 bzero(f, sizeof *f); 602 while (*s) { 603 if (isdigit(*s)) 604 f->size = f->size * 10 + *s - '0'; 605 else if (isupper(*s)) 606 if (f->font[0]) 607 f->font[1] = *s; 608 else 609 f->font[0] = *s; 610 else if (*s == 'c') 611 f->allcaps = 1; 612 else if (*s == '+') 613 sizedelta++; 614 else if (*s == '-') 615 sizedelta--; 616 else { 617 errx(1, "bad font specification: %s", s0); 618 } 619 s++; 620 } 621 if (f->font[0] == 0) 622 f->font[0] = 'R'; 623 if (bodyf.size == 0) 624 bodyf.size = 11; 625 if (f->size == 0) 626 f->size = bodyf.size + sizedelta; 627 else if (sizedelta > 0) 628 f->size += bodyf.size; 629 else 630 f->size = bodyf.size - f->size; 631 } 632