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