1 /* 2 * Copyright (c) 1985 Sun Microsystems, Inc. 3 * Copyright (c) 1980 The Regents of the University of California. 4 * Copyright (c) 1976 Board of Trustees of the University of Illinois. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms are permitted 8 * provided that the above copyright notice and this paragraph are 9 * duplicated in all such forms and that any documentation, 10 * advertising materials, and other materials related to such 11 * distribution and use acknowledge that the software was developed 12 * by the University of California, Berkeley, the University of Illinois, 13 * Urbana, and Sun Microsystems, Inc. The name of either University 14 * or Sun Microsystems may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19 */ 20 21 #ifndef lint 22 static char sccsid[] = "@(#)io.c 5.13 (Berkeley) 05/15/89"; 23 #endif /* not lint */ 24 25 #include "indent_globs.h" 26 #include <ctype.h> 27 28 29 int comment_open; 30 static paren_target; 31 32 dump_line() 33 { /* dump_line is the routine that actually 34 * effects the printing of the new source. It 35 * prints the label section, followed by the 36 * code section with the appropriate nesting 37 * level, followed by any comments */ 38 register int cur_col, 39 target_col; 40 static not_first_line; 41 42 if (ps.procname[0]) { 43 if (troff) { 44 if (comment_open) { 45 comment_open = 0; 46 fprintf(output, ".*/\n"); 47 } 48 fprintf(output, ".Pr \"%s\"\n", ps.procname); 49 } 50 ps.ind_level = 0; 51 ps.procname[0] = 0; 52 } 53 if (s_code == e_code && s_lab == e_lab && s_com == e_com) { 54 if (suppress_blanklines > 0) 55 suppress_blanklines--; 56 else { 57 ps.bl_line = true; 58 n_real_blanklines++; 59 } 60 } 61 else if (!inhibit_formatting) { 62 suppress_blanklines = 0; 63 ps.bl_line = false; 64 if (prefix_blankline_requested && not_first_line) 65 if (swallow_optional_blanklines) { 66 if (n_real_blanklines == 1) 67 n_real_blanklines = 0; 68 } 69 else { 70 if (n_real_blanklines == 0) 71 n_real_blanklines = 1; 72 } 73 while (--n_real_blanklines >= 0) 74 putc('\n', output); 75 n_real_blanklines = 0; 76 if (ps.ind_level == 0) 77 ps.ind_stmt = 0; /* this is a class A kludge. dont do 78 * additional statement indentation if we are 79 * at bracket level 0 */ 80 81 if (e_lab != s_lab || e_code != s_code) 82 ++code_lines; /* keep count of lines with code */ 83 84 85 if (e_lab != s_lab) { /* print lab, if any */ 86 if (comment_open) { 87 comment_open = 0; 88 fprintf(output, ".*/\n"); 89 } 90 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 91 e_lab--; 92 cur_col = pad_output(1, compute_label_target()); 93 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 94 || strncmp(s_lab, "#endif", 6) == 0)) { 95 register char *s = s_lab; 96 if (e_lab[-1] == '\n') e_lab--; 97 do putc(*s++, output); 98 while (s < e_lab && 'a' <= *s && *s<='z'); 99 while ((*s == ' ' || *s == '\t') && s < e_lab) 100 s++; 101 if (s < e_lab) 102 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 103 e_lab - s, s); 104 } 105 else fprintf(output, "%.*s", e_lab - s_lab, s_lab); 106 cur_col = count_spaces(cur_col, s_lab); 107 } 108 else 109 cur_col = 1; /* there is no label section */ 110 111 ps.pcase = false; 112 113 if (s_code != e_code) { /* print code section, if any */ 114 register char *p; 115 116 if (comment_open) { 117 comment_open = 0; 118 fprintf(output, ".*/\n"); 119 } 120 target_col = compute_code_target(); 121 { 122 register i; 123 124 for (i = 0; i < ps.p_l_follow; i++) 125 if (ps.paren_indents[i] >= 0) 126 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 127 } 128 cur_col = pad_output(cur_col, target_col); 129 for (p = s_code; p < e_code; p++) 130 if (*p == (char) 0200) 131 fprintf(output, "%d", target_col * 7); 132 else 133 putc(*p, output); 134 cur_col = count_spaces(cur_col, s_code); 135 } 136 if (s_com != e_com) 137 if (troff) { 138 int all_here = 0; 139 register char *p; 140 141 if (e_com[-1] == '/' && e_com[-2] == '*') 142 e_com -= 2, all_here++; 143 while (e_com > s_com && e_com[-1] == ' ') 144 e_com--; 145 *e_com = 0; 146 p = s_com; 147 while (*p == ' ') 148 p++; 149 if (p[0] == '/' && p[1] == '*') 150 p += 2, all_here++; 151 else if (p[0] == '*') 152 p += p[1] == '/' ? 2 : 1; 153 while (*p == ' ') 154 p++; 155 if (*p == 0) 156 goto inhibit_newline; 157 if (comment_open < 2 && ps.box_com) { 158 comment_open = 0; 159 fprintf(output, ".*/\n"); 160 } 161 if (comment_open == 0) { 162 if ('a' <= *p && *p <= 'z') 163 *p = *p + 'A' - 'a'; 164 if (e_com - p < 50 && all_here == 2) { 165 register char *follow = p; 166 fprintf(output, "\n.nr C! \\w\1"); 167 while (follow < e_com) { 168 switch (*follow) { 169 case '\n': 170 putc(' ', output); 171 case 1: 172 break; 173 case '\\': 174 putc('\\', output); 175 default: 176 putc(*follow, output); 177 } 178 follow++; 179 } 180 putc(1, output); 181 } 182 fprintf(output, "\n./* %dp %d %dp\n", 183 ps.com_col * 7, 184 (s_code != e_code || s_lab != e_lab) - ps.box_com, 185 target_col * 7); 186 } 187 comment_open = 1 + ps.box_com; 188 while (*p) { 189 if (*p == BACKSLASH) 190 putc(BACKSLASH, output); 191 putc(*p++, output); 192 } 193 } 194 else { /* print comment, if any */ 195 register target = ps.com_col; 196 register char *com_st = s_com; 197 198 target += ps.comment_delta; 199 while (*com_st == '\t') 200 com_st++, target += 8; /* ? */ 201 while (target <= 0) 202 if (*com_st == ' ') 203 target++, com_st++; 204 else if (*com_st == '\t') 205 target = ((target - 1) & ~7) + 9, com_st++; 206 else 207 target = 1; 208 if (cur_col > target) { /* if comment cant fit on this line, 209 * put it on next line */ 210 putc('\n', output); 211 cur_col = 1; 212 ++ps.out_lines; 213 } 214 while (e_com > com_st && isspace(e_com[-1])) 215 e_com--; 216 cur_col = pad_output(cur_col, target); 217 if (!ps.box_com) { 218 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) 219 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) 220 com_st[1] = '*'; 221 else 222 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); 223 } 224 fwrite(com_st, e_com - com_st, 1, output); 225 ps.comment_delta = ps.n_comment_delta; 226 cur_col = count_spaces(cur_col, com_st); 227 ++ps.com_lines; /* count lines with comments */ 228 } 229 if (ps.use_ff) 230 putc('\014', output); 231 else 232 putc('\n', output); 233 inhibit_newline: 234 ++ps.out_lines; 235 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 236 prefix_blankline_requested = 1; 237 ps.just_saw_decl = 0; 238 } 239 else 240 prefix_blankline_requested = postfix_blankline_requested; 241 postfix_blankline_requested = 0; 242 } 243 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 244 * declaration, remember that fact for 245 * proper comment indentation */ 246 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 247 * indented if we have not 248 * completed this stmt and if 249 * we are not in the middle of 250 * a declaration */ 251 ps.use_ff = false; 252 ps.dumped_decl_indent = 0; 253 *(e_lab = s_lab) = '\0'; /* reset buffers */ 254 *(e_code = s_code) = '\0'; 255 *(e_com = s_com) = '\0'; 256 ps.ind_level = ps.i_l_follow; 257 ps.paren_level = ps.p_l_follow; 258 paren_target = -ps.paren_indents[ps.paren_level - 1]; 259 not_first_line = 1; 260 return; 261 } 262 263 compute_code_target() 264 { 265 register target_col = ps.ind_size * ps.ind_level + 1; 266 267 if (ps.paren_level) 268 if (!lineup_to_parens) 269 target_col += continuation_indent * ps.paren_level; 270 else { 271 register w; 272 register t = paren_target; 273 274 if ((w = count_spaces(t, s_code) - max_col) > 0 275 && count_spaces(target_col, s_code) <= max_col) { 276 t -= w + 1; 277 if (t > target_col) 278 target_col = t; 279 } 280 else 281 target_col = t; 282 } 283 else if (ps.ind_stmt) 284 target_col += continuation_indent; 285 return target_col; 286 } 287 288 compute_label_target() 289 { 290 return 291 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 292 : *s_lab == '#' ? 1 293 : ps.ind_size * (ps.ind_level - label_offset) + 1; 294 } 295 296 297 /* 298 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 299 * 300 * All rights reserved 301 * 302 * 303 * NAME: fill_buffer 304 * 305 * FUNCTION: Reads one block of input into input_buffer 306 * 307 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 308 * Willcox of CAC Added check for switch back to partly full input 309 * buffer from temporary buffer 310 * 311 */ 312 int 313 fill_buffer() 314 { /* this routine reads stuff from the input */ 315 register char *p; 316 register int i; 317 register FILE *f = input; 318 319 if (bp_save != 0) { /* there is a partly filled input buffer left */ 320 buf_ptr = bp_save; /* dont read anything, just switch buffers */ 321 buf_end = be_save; 322 bp_save = be_save = 0; 323 if (buf_ptr < buf_end) 324 return; /* only return if there is really something in 325 * this buffer */ 326 } 327 for (p = in_buffer;;) { 328 if (p >= in_buffer_limit) { 329 register size = (in_buffer_limit - in_buffer) * 2 + 10; 330 register offset = p - in_buffer; 331 in_buffer = (char *) realloc(in_buffer, size); 332 if (in_buffer == 0) 333 err("input line too long"); 334 p = in_buffer + offset; 335 in_buffer_limit = in_buffer + size - 2; 336 } 337 if ((i = getc(f)) == EOF) { 338 *p++ = ' '; 339 *p++ = '\n'; 340 had_eof = true; 341 break; 342 } 343 *p++ = i; 344 if (i == '\n') 345 break; 346 } 347 buf_ptr = in_buffer; 348 buf_end = p; 349 if (p[-2] == '/' && p[-3] == '*') { 350 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 351 fill_buffer(); /* flush indent error message */ 352 else { 353 int com = 0; 354 355 p = in_buffer; 356 while (*p == ' ' || *p == '\t') 357 p++; 358 if (*p == '/' && p[1] == '*') { 359 p += 2; 360 while (*p == ' ' || *p == '\t') 361 p++; 362 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 363 && p[4] == 'N' && p[5] == 'T') { 364 p += 6; 365 while (*p == ' ' || *p == '\t') 366 p++; 367 if (*p == '*') 368 com = 1; 369 else if (*p == 'O') 370 if (*++p == 'N') 371 p++, com = 1; 372 else if (*p == 'F' && *++p == 'F') 373 p++, com = 2; 374 while (*p == ' ' || *p == '\t') 375 p++; 376 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 377 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 378 dump_line(); 379 if (!(inhibit_formatting = com - 1)) { 380 n_real_blanklines = 0; 381 postfix_blankline_requested = 0; 382 prefix_blankline_requested = 0; 383 suppress_blanklines = 1; 384 } 385 } 386 } 387 } 388 } 389 } 390 if (inhibit_formatting) { 391 p = in_buffer; 392 do 393 putc(*p, output); 394 while (*p++ != '\n'); 395 } 396 return; 397 } 398 399 /* 400 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 401 * 402 * All rights reserved 403 * 404 * 405 * NAME: pad_output 406 * 407 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 408 * position. 409 * 410 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 411 * 412 * PARAMETERS: current integer The current column target 413 * nteger The desired column 414 * 415 * RETURNS: Integer value of the new column. (If current >= target, no action is 416 * taken, and current is returned. 417 * 418 * GLOBALS: None 419 * 420 * CALLS: write (sys) 421 * 422 * CALLED BY: dump_line 423 * 424 * HISTORY: initial coding November 1976 D A Willcox of CAC 425 * 426 */ 427 pad_output(current, target) /* writes tabs and blanks (if necessary) to 428 * get the current output position up to the 429 * target column */ 430 int current; /* the current column value */ 431 int target; /* position we want it at */ 432 { 433 register int curr; /* internal column pointer */ 434 register int tcur; 435 436 if (troff) 437 fprintf(output, "\\h'|%dp'", (target - 1) * 7); 438 else { 439 if (current >= target) 440 return (current); /* line is already long enough */ 441 curr = current; 442 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { 443 putc('\t', output); 444 curr = tcur; 445 } 446 while (curr++ < target) 447 putc(' ', output); /* pad with final blanks */ 448 } 449 return (target); 450 } 451 452 /* 453 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 454 * 455 * All rights reserved 456 * 457 * 458 * NAME: count_spaces 459 * 460 * FUNCTION: Find out where printing of a given string will leave the current 461 * character position on output. 462 * 463 * ALGORITHM: Run thru input string and add appropriate values to current 464 * position. 465 * 466 * RETURNS: Integer value of position after printing "buffer" starting in column 467 * "current". 468 * 469 * HISTORY: initial coding November 1976 D A Willcox of CAC 470 * 471 */ 472 int 473 count_spaces(current, buffer) 474 /* 475 * this routine figures out where the character position will be after 476 * printing the text in buffer starting at column "current" 477 */ 478 int current; 479 char *buffer; 480 { 481 register char *buf; /* used to look thru buffer */ 482 register int cur; /* current character counter */ 483 484 cur = current; 485 486 for (buf = buffer; *buf != '\0'; ++buf) { 487 switch (*buf) { 488 489 case '\n': 490 case 014: /* form feed */ 491 cur = 1; 492 break; 493 494 case '\t': 495 cur = ((cur - 1) & tabmask) + tabsize + 1; 496 break; 497 498 case 010: /* backspace */ 499 --cur; 500 break; 501 502 default: 503 ++cur; 504 break; 505 } /* end of switch */ 506 } /* end of for loop */ 507 return (cur); 508 } 509 510 int found_err; 511 /* VARARGS2 */ 512 diag(level, msg, a, b) 513 { 514 if (level) 515 found_err = 1; 516 if (output == stdout) { 517 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 518 fprintf(stdout, msg, a, b); 519 fprintf(stdout, " */\n"); 520 } 521 else { 522 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 523 fprintf(stderr, msg, a, b); 524 fprintf(stderr, "\n"); 525 } 526 } 527 528 writefdef(f, nm) 529 register struct fstate *f; 530 { 531 fprintf(output, ".ds f%c %s\n.nr s%c %d\n", 532 nm, f->font, nm, f->size); 533 } 534 535 char * 536 chfont(of, nf, s) 537 register struct fstate *of, 538 *nf; 539 char *s; 540 { 541 if (of->font[0] != nf->font[0] 542 || of->font[1] != nf->font[1]) { 543 *s++ = '\\'; 544 *s++ = 'f'; 545 if (nf->font[1]) { 546 *s++ = '('; 547 *s++ = nf->font[0]; 548 *s++ = nf->font[1]; 549 } 550 else 551 *s++ = nf->font[0]; 552 } 553 if (nf->size != of->size) { 554 *s++ = '\\'; 555 *s++ = 's'; 556 if (nf->size < of->size) { 557 *s++ = '-'; 558 *s++ = '0' + of->size - nf->size; 559 } 560 else { 561 *s++ = '+'; 562 *s++ = '0' + nf->size - of->size; 563 } 564 } 565 return s; 566 } 567 568 569 parsefont(f, s0) 570 register struct fstate *f; 571 char *s0; 572 { 573 register char *s = s0; 574 int sizedelta = 0; 575 bzero(f, sizeof *f); 576 while (*s) { 577 if (isdigit(*s)) 578 f->size = f->size * 10 + *s - '0'; 579 else if (isupper(*s)) 580 if (f->font[0]) 581 f->font[1] = *s; 582 else 583 f->font[0] = *s; 584 else if (*s == 'c') 585 f->allcaps = 1; 586 else if (*s == '+') 587 sizedelta++; 588 else if (*s == '-') 589 sizedelta--; 590 else { 591 fprintf(stderr, "indent: bad font specification: %s\n", s0); 592 exit(1); 593 } 594 s++; 595 } 596 if (f->font[0] == 0) 597 f->font[0] = 'R'; 598 if (bodyf.size == 0) 599 bodyf.size = 11; 600 if (f->size == 0) 601 f->size = bodyf.size + sizedelta; 602 else if (sizedelta > 0) 603 f->size += bodyf.size; 604 else 605 f->size = bodyf.size - f->size; 606 } 607