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