1 /* $NetBSD: io.c,v 1.3 1997/01/09 20:20:15 tls Exp $ */ 2 3 /* 4 * Copyright (c) 1985 Sun Microsystems, Inc. 5 * Copyright (c) 1980 The Regents of the University of California. 6 * Copyright (c) 1976 Board of Trustees of the University of Illinois. 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 #ifndef lint 39 /*static char sccsid[] = "from: @(#)io.c 5.15 (Berkeley) 2/26/91";*/ 40 static char rcsid[] = "$NetBSD: io.c,v 1.3 1997/01/09 20:20:15 tls Exp $"; 41 #endif /* not lint */ 42 43 #include <stdio.h> 44 #include <ctype.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include "indent_globs.h" 48 49 50 int comment_open; 51 static paren_target; 52 53 dump_line() 54 { /* dump_line is the routine that actually 55 * effects the printing of the new source. It 56 * prints the label section, followed by the 57 * code section with the appropriate nesting 58 * level, followed by any comments */ 59 register int cur_col, 60 target_col; 61 static not_first_line; 62 63 if (ps.procname[0]) { 64 if (troff) { 65 if (comment_open) { 66 comment_open = 0; 67 fprintf(output, ".*/\n"); 68 } 69 fprintf(output, ".Pr \"%s\"\n", ps.procname); 70 } 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 while (--n_real_blanklines >= 0) 95 putc('\n', output); 96 n_real_blanklines = 0; 97 if (ps.ind_level == 0) 98 ps.ind_stmt = 0; /* this is a class A kludge. dont do 99 * additional statement indentation if we are 100 * at bracket level 0 */ 101 102 if (e_lab != s_lab || e_code != s_code) 103 ++code_lines; /* keep count of lines with code */ 104 105 106 if (e_lab != s_lab) { /* print lab, if any */ 107 if (comment_open) { 108 comment_open = 0; 109 fprintf(output, ".*/\n"); 110 } 111 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 112 e_lab--; 113 cur_col = pad_output(1, compute_label_target()); 114 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 115 || strncmp(s_lab, "#endif", 6) == 0)) { 116 register char *s = s_lab; 117 if (e_lab[-1] == '\n') e_lab--; 118 do putc(*s++, output); 119 while (s < e_lab && 'a' <= *s && *s<='z'); 120 while ((*s == ' ' || *s == '\t') && s < e_lab) 121 s++; 122 if (s < e_lab) 123 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 124 e_lab - s, s); 125 } 126 else fprintf(output, "%.*s", e_lab - s_lab, s_lab); 127 cur_col = count_spaces(cur_col, s_lab); 128 } 129 else 130 cur_col = 1; /* there is no label section */ 131 132 ps.pcase = false; 133 134 if (s_code != e_code) { /* print code section, if any */ 135 register char *p; 136 137 if (comment_open) { 138 comment_open = 0; 139 fprintf(output, ".*/\n"); 140 } 141 target_col = compute_code_target(); 142 { 143 register i; 144 145 for (i = 0; i < ps.p_l_follow; i++) 146 if (ps.paren_indents[i] >= 0) 147 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 148 } 149 cur_col = pad_output(cur_col, target_col); 150 for (p = s_code; p < e_code; p++) 151 if (*p == (char) 0200) 152 fprintf(output, "%d", target_col * 7); 153 else 154 putc(*p, output); 155 cur_col = count_spaces(cur_col, s_code); 156 } 157 if (s_com != e_com) 158 if (troff) { 159 int all_here = 0; 160 register char *p; 161 162 if (e_com[-1] == '/' && e_com[-2] == '*') 163 e_com -= 2, all_here++; 164 while (e_com > s_com && e_com[-1] == ' ') 165 e_com--; 166 *e_com = 0; 167 p = s_com; 168 while (*p == ' ') 169 p++; 170 if (p[0] == '/' && p[1] == '*') 171 p += 2, all_here++; 172 else if (p[0] == '*') 173 p += p[1] == '/' ? 2 : 1; 174 while (*p == ' ') 175 p++; 176 if (*p == 0) 177 goto inhibit_newline; 178 if (comment_open < 2 && ps.box_com) { 179 comment_open = 0; 180 fprintf(output, ".*/\n"); 181 } 182 if (comment_open == 0) { 183 if ('a' <= *p && *p <= 'z') 184 *p = *p + 'A' - 'a'; 185 if (e_com - p < 50 && all_here == 2) { 186 register char *follow = p; 187 fprintf(output, "\n.nr C! \\w\1"); 188 while (follow < e_com) { 189 switch (*follow) { 190 case '\n': 191 putc(' ', output); 192 case 1: 193 break; 194 case '\\': 195 putc('\\', output); 196 default: 197 putc(*follow, output); 198 } 199 follow++; 200 } 201 putc(1, output); 202 } 203 fprintf(output, "\n./* %dp %d %dp\n", 204 ps.com_col * 7, 205 (s_code != e_code || s_lab != e_lab) - ps.box_com, 206 target_col * 7); 207 } 208 comment_open = 1 + ps.box_com; 209 while (*p) { 210 if (*p == BACKSLASH) 211 putc(BACKSLASH, output); 212 putc(*p++, output); 213 } 214 } 215 else { /* print comment, if any */ 216 register target = ps.com_col; 217 register char *com_st = s_com; 218 219 target += ps.comment_delta; 220 while (*com_st == '\t') 221 com_st++, target += 8; /* ? */ 222 while (target <= 0) 223 if (*com_st == ' ') 224 target++, com_st++; 225 else if (*com_st == '\t') 226 target = ((target - 1) & ~7) + 9, com_st++; 227 else 228 target = 1; 229 if (cur_col > target) { /* if comment cant fit on this line, 230 * put it on next line */ 231 putc('\n', output); 232 cur_col = 1; 233 ++ps.out_lines; 234 } 235 while (e_com > com_st && isspace(e_com[-1])) 236 e_com--; 237 cur_col = pad_output(cur_col, target); 238 if (!ps.box_com) { 239 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) 240 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) 241 com_st[1] = '*'; 242 else 243 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); 244 } 245 fwrite(com_st, e_com - com_st, 1, output); 246 ps.comment_delta = ps.n_comment_delta; 247 cur_col = count_spaces(cur_col, com_st); 248 ++ps.com_lines; /* count lines with comments */ 249 } 250 if (ps.use_ff) 251 putc('\014', output); 252 else 253 putc('\n', output); 254 inhibit_newline: 255 ++ps.out_lines; 256 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 257 prefix_blankline_requested = 1; 258 ps.just_saw_decl = 0; 259 } 260 else 261 prefix_blankline_requested = postfix_blankline_requested; 262 postfix_blankline_requested = 0; 263 } 264 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 265 * declaration, remember that fact for 266 * proper comment indentation */ 267 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 268 * indented if we have not 269 * completed this stmt and if 270 * we are not in the middle of 271 * a declaration */ 272 ps.use_ff = false; 273 ps.dumped_decl_indent = 0; 274 *(e_lab = s_lab) = '\0'; /* reset buffers */ 275 *(e_code = s_code) = '\0'; 276 *(e_com = s_com) = '\0'; 277 ps.ind_level = ps.i_l_follow; 278 ps.paren_level = ps.p_l_follow; 279 paren_target = -ps.paren_indents[ps.paren_level - 1]; 280 not_first_line = 1; 281 return; 282 } 283 284 compute_code_target() 285 { 286 register target_col = ps.ind_size * ps.ind_level + 1; 287 288 if (ps.paren_level) 289 if (!lineup_to_parens) 290 target_col += continuation_indent * ps.paren_level; 291 else { 292 register w; 293 register t = paren_target; 294 295 if ((w = count_spaces(t, s_code) - max_col) > 0 296 && count_spaces(target_col, s_code) <= max_col) { 297 t -= w + 1; 298 if (t > target_col) 299 target_col = t; 300 } 301 else 302 target_col = t; 303 } 304 else if (ps.ind_stmt) 305 target_col += continuation_indent; 306 return target_col; 307 } 308 309 compute_label_target() 310 { 311 return 312 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 313 : *s_lab == '#' ? 1 314 : ps.ind_size * (ps.ind_level - label_offset) + 1; 315 } 316 317 318 /* 319 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 320 * 321 * All rights reserved 322 * 323 * 324 * NAME: fill_buffer 325 * 326 * FUNCTION: Reads one block of input into input_buffer 327 * 328 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 329 * Willcox of CAC Added check for switch back to partly full input 330 * buffer from temporary buffer 331 * 332 */ 333 int 334 fill_buffer() 335 { /* this routine reads stuff from the input */ 336 register char *p; 337 register int i; 338 register FILE *f = input; 339 340 if (bp_save != 0) { /* there is a partly filled input buffer left */ 341 buf_ptr = bp_save; /* dont read anything, just switch buffers */ 342 buf_end = be_save; 343 bp_save = be_save = 0; 344 if (buf_ptr < buf_end) 345 return; /* only return if there is really something in 346 * this buffer */ 347 } 348 for (p = in_buffer;;) { 349 if (p >= in_buffer_limit) { 350 register size = (in_buffer_limit - in_buffer) * 2 + 10; 351 register offset = p - in_buffer; 352 in_buffer = (char *) realloc(in_buffer, size); 353 if (in_buffer == 0) 354 err("input line too long"); 355 p = in_buffer + offset; 356 in_buffer_limit = in_buffer + size - 2; 357 } 358 if ((i = getc(f)) == EOF) { 359 *p++ = ' '; 360 *p++ = '\n'; 361 had_eof = true; 362 break; 363 } 364 *p++ = i; 365 if (i == '\n') 366 break; 367 } 368 buf_ptr = in_buffer; 369 buf_end = p; 370 if (p[-2] == '/' && p[-3] == '*') { 371 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 372 fill_buffer(); /* flush indent error message */ 373 else { 374 int com = 0; 375 376 p = in_buffer; 377 while (*p == ' ' || *p == '\t') 378 p++; 379 if (*p == '/' && p[1] == '*') { 380 p += 2; 381 while (*p == ' ' || *p == '\t') 382 p++; 383 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 384 && p[4] == 'N' && p[5] == 'T') { 385 p += 6; 386 while (*p == ' ' || *p == '\t') 387 p++; 388 if (*p == '*') 389 com = 1; 390 else if (*p == 'O') 391 if (*++p == 'N') 392 p++, com = 1; 393 else if (*p == 'F' && *++p == 'F') 394 p++, com = 2; 395 while (*p == ' ' || *p == '\t') 396 p++; 397 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 398 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 399 dump_line(); 400 if (!(inhibit_formatting = com - 1)) { 401 n_real_blanklines = 0; 402 postfix_blankline_requested = 0; 403 prefix_blankline_requested = 0; 404 suppress_blanklines = 1; 405 } 406 } 407 } 408 } 409 } 410 } 411 if (inhibit_formatting) { 412 p = in_buffer; 413 do 414 putc(*p, output); 415 while (*p++ != '\n'); 416 } 417 return; 418 } 419 420 /* 421 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 422 * 423 * All rights reserved 424 * 425 * 426 * NAME: pad_output 427 * 428 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 429 * position. 430 * 431 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 432 * 433 * PARAMETERS: current integer The current column target 434 * nteger The desired column 435 * 436 * RETURNS: Integer value of the new column. (If current >= target, no action is 437 * taken, and current is returned. 438 * 439 * GLOBALS: None 440 * 441 * CALLS: write (sys) 442 * 443 * CALLED BY: dump_line 444 * 445 * HISTORY: initial coding November 1976 D A Willcox of CAC 446 * 447 */ 448 pad_output(current, target) /* writes tabs and blanks (if necessary) to 449 * get the current output position up to the 450 * target column */ 451 int current; /* the current column value */ 452 int target; /* position we want it at */ 453 { 454 register int curr; /* internal column pointer */ 455 register int tcur; 456 457 if (troff) 458 fprintf(output, "\\h'|%dp'", (target - 1) * 7); 459 else { 460 if (current >= target) 461 return (current); /* line is already long enough */ 462 curr = current; 463 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { 464 putc('\t', output); 465 curr = tcur; 466 } 467 while (curr++ < target) 468 putc(' ', output); /* pad with final blanks */ 469 } 470 return (target); 471 } 472 473 /* 474 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 475 * 476 * All rights reserved 477 * 478 * 479 * NAME: count_spaces 480 * 481 * FUNCTION: Find out where printing of a given string will leave the current 482 * character position on output. 483 * 484 * ALGORITHM: Run thru input string and add appropriate values to current 485 * position. 486 * 487 * RETURNS: Integer value of position after printing "buffer" starting in column 488 * "current". 489 * 490 * HISTORY: initial coding November 1976 D A Willcox of CAC 491 * 492 */ 493 int 494 count_spaces(current, buffer) 495 /* 496 * this routine figures out where the character position will be after 497 * printing the text in buffer starting at column "current" 498 */ 499 int current; 500 char *buffer; 501 { 502 register char *buf; /* used to look thru buffer */ 503 register int cur; /* current character counter */ 504 505 cur = current; 506 507 for (buf = buffer; *buf != '\0'; ++buf) { 508 switch (*buf) { 509 510 case '\n': 511 case 014: /* form feed */ 512 cur = 1; 513 break; 514 515 case '\t': 516 cur = ((cur - 1) & tabmask) + tabsize + 1; 517 break; 518 519 case 010: /* backspace */ 520 --cur; 521 break; 522 523 default: 524 ++cur; 525 break; 526 } /* end of switch */ 527 } /* end of for loop */ 528 return (cur); 529 } 530 531 int found_err; 532 /* VARARGS2 */ 533 diag(level, msg, a, b) 534 char *msg; 535 { 536 if (level) 537 found_err = 1; 538 if (output == stdout) { 539 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 540 fprintf(stdout, msg, a, b); 541 fprintf(stdout, " */\n"); 542 } 543 else { 544 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 545 fprintf(stderr, msg, a, b); 546 fprintf(stderr, "\n"); 547 } 548 } 549 550 writefdef(f, nm) 551 register struct fstate *f; 552 { 553 fprintf(output, ".ds f%c %s\n.nr s%c %d\n", 554 nm, f->font, nm, f->size); 555 } 556 557 char * 558 chfont(of, nf, s) 559 register struct fstate *of, 560 *nf; 561 char *s; 562 { 563 if (of->font[0] != nf->font[0] 564 || of->font[1] != nf->font[1]) { 565 *s++ = '\\'; 566 *s++ = 'f'; 567 if (nf->font[1]) { 568 *s++ = '('; 569 *s++ = nf->font[0]; 570 *s++ = nf->font[1]; 571 } 572 else 573 *s++ = nf->font[0]; 574 } 575 if (nf->size != of->size) { 576 *s++ = '\\'; 577 *s++ = 's'; 578 if (nf->size < of->size) { 579 *s++ = '-'; 580 *s++ = '0' + of->size - nf->size; 581 } 582 else { 583 *s++ = '+'; 584 *s++ = '0' + nf->size - of->size; 585 } 586 } 587 return s; 588 } 589 590 591 parsefont(f, s0) 592 register struct fstate *f; 593 char *s0; 594 { 595 register char *s = s0; 596 int sizedelta = 0; 597 bzero(f, sizeof *f); 598 while (*s) { 599 if (isdigit(*s)) 600 f->size = f->size * 10 + *s - '0'; 601 else if (isupper(*s)) 602 if (f->font[0]) 603 f->font[1] = *s; 604 else 605 f->font[0] = *s; 606 else if (*s == 'c') 607 f->allcaps = 1; 608 else if (*s == '+') 609 sizedelta++; 610 else if (*s == '-') 611 sizedelta--; 612 else { 613 fprintf(stderr, "indent: bad font specification: %s\n", s0); 614 exit(1); 615 } 616 s++; 617 } 618 if (f->font[0] == 0) 619 f->font[0] = 'R'; 620 if (bodyf.size == 0) 621 bodyf.size = 11; 622 if (f->size == 0) 623 f->size = bodyf.size + sizedelta; 624 else if (sizedelta > 0) 625 f->size += bodyf.size; 626 else 627 f->size = bodyf.size - f->size; 628 } 629