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 * %sccs.include.redist.c% 8 */ 9 10 #ifndef lint 11 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 06/06/93"; 12 #endif /* not lint */ 13 14 #include <stdio.h> 15 #include <ctype.h> 16 #include <stdlib.h> 17 #include <string.h> 18 #include "indent_globs.h" 19 20 21 int comment_open; 22 static paren_target; 23 24 dump_line() 25 { /* dump_line is the routine that actually 26 * effects the printing of the new source. It 27 * prints the label section, followed by the 28 * code section with the appropriate nesting 29 * level, followed by any comments */ 30 register int cur_col, 31 target_col; 32 static not_first_line; 33 34 if (ps.procname[0]) { 35 if (troff) { 36 if (comment_open) { 37 comment_open = 0; 38 fprintf(output, ".*/\n"); 39 } 40 fprintf(output, ".Pr \"%s\"\n", ps.procname); 41 } 42 ps.ind_level = 0; 43 ps.procname[0] = 0; 44 } 45 if (s_code == e_code && s_lab == e_lab && s_com == e_com) { 46 if (suppress_blanklines > 0) 47 suppress_blanklines--; 48 else { 49 ps.bl_line = true; 50 n_real_blanklines++; 51 } 52 } 53 else if (!inhibit_formatting) { 54 suppress_blanklines = 0; 55 ps.bl_line = false; 56 if (prefix_blankline_requested && not_first_line) 57 if (swallow_optional_blanklines) { 58 if (n_real_blanklines == 1) 59 n_real_blanklines = 0; 60 } 61 else { 62 if (n_real_blanklines == 0) 63 n_real_blanklines = 1; 64 } 65 while (--n_real_blanklines >= 0) 66 putc('\n', output); 67 n_real_blanklines = 0; 68 if (ps.ind_level == 0) 69 ps.ind_stmt = 0; /* this is a class A kludge. dont do 70 * additional statement indentation if we are 71 * at bracket level 0 */ 72 73 if (e_lab != s_lab || e_code != s_code) 74 ++code_lines; /* keep count of lines with code */ 75 76 77 if (e_lab != s_lab) { /* print lab, if any */ 78 if (comment_open) { 79 comment_open = 0; 80 fprintf(output, ".*/\n"); 81 } 82 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 83 e_lab--; 84 cur_col = pad_output(1, compute_label_target()); 85 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 86 || strncmp(s_lab, "#endif", 6) == 0)) { 87 register char *s = s_lab; 88 if (e_lab[-1] == '\n') e_lab--; 89 do putc(*s++, output); 90 while (s < e_lab && 'a' <= *s && *s<='z'); 91 while ((*s == ' ' || *s == '\t') && s < e_lab) 92 s++; 93 if (s < e_lab) 94 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 95 e_lab - s, s); 96 } 97 else fprintf(output, "%.*s", e_lab - s_lab, s_lab); 98 cur_col = count_spaces(cur_col, s_lab); 99 } 100 else 101 cur_col = 1; /* there is no label section */ 102 103 ps.pcase = false; 104 105 if (s_code != e_code) { /* print code section, if any */ 106 register char *p; 107 108 if (comment_open) { 109 comment_open = 0; 110 fprintf(output, ".*/\n"); 111 } 112 target_col = compute_code_target(); 113 { 114 register i; 115 116 for (i = 0; i < ps.p_l_follow; i++) 117 if (ps.paren_indents[i] >= 0) 118 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 119 } 120 cur_col = pad_output(cur_col, target_col); 121 for (p = s_code; p < e_code; p++) 122 if (*p == (char) 0200) 123 fprintf(output, "%d", target_col * 7); 124 else 125 putc(*p, output); 126 cur_col = count_spaces(cur_col, s_code); 127 } 128 if (s_com != e_com) 129 if (troff) { 130 int all_here = 0; 131 register char *p; 132 133 if (e_com[-1] == '/' && e_com[-2] == '*') 134 e_com -= 2, all_here++; 135 while (e_com > s_com && e_com[-1] == ' ') 136 e_com--; 137 *e_com = 0; 138 p = s_com; 139 while (*p == ' ') 140 p++; 141 if (p[0] == '/' && p[1] == '*') 142 p += 2, all_here++; 143 else if (p[0] == '*') 144 p += p[1] == '/' ? 2 : 1; 145 while (*p == ' ') 146 p++; 147 if (*p == 0) 148 goto inhibit_newline; 149 if (comment_open < 2 && ps.box_com) { 150 comment_open = 0; 151 fprintf(output, ".*/\n"); 152 } 153 if (comment_open == 0) { 154 if ('a' <= *p && *p <= 'z') 155 *p = *p + 'A' - 'a'; 156 if (e_com - p < 50 && all_here == 2) { 157 register char *follow = p; 158 fprintf(output, "\n.nr C! \\w\1"); 159 while (follow < e_com) { 160 switch (*follow) { 161 case '\n': 162 putc(' ', output); 163 case 1: 164 break; 165 case '\\': 166 putc('\\', output); 167 default: 168 putc(*follow, output); 169 } 170 follow++; 171 } 172 putc(1, output); 173 } 174 fprintf(output, "\n./* %dp %d %dp\n", 175 ps.com_col * 7, 176 (s_code != e_code || s_lab != e_lab) - ps.box_com, 177 target_col * 7); 178 } 179 comment_open = 1 + ps.box_com; 180 while (*p) { 181 if (*p == BACKSLASH) 182 putc(BACKSLASH, output); 183 putc(*p++, output); 184 } 185 } 186 else { /* print comment, if any */ 187 register target = ps.com_col; 188 register char *com_st = s_com; 189 190 target += ps.comment_delta; 191 while (*com_st == '\t') 192 com_st++, target += 8; /* ? */ 193 while (target <= 0) 194 if (*com_st == ' ') 195 target++, com_st++; 196 else if (*com_st == '\t') 197 target = ((target - 1) & ~7) + 9, com_st++; 198 else 199 target = 1; 200 if (cur_col > target) { /* if comment cant fit on this line, 201 * put it on next line */ 202 putc('\n', output); 203 cur_col = 1; 204 ++ps.out_lines; 205 } 206 while (e_com > com_st && isspace(e_com[-1])) 207 e_com--; 208 cur_col = pad_output(cur_col, target); 209 if (!ps.box_com) { 210 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) 211 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) 212 com_st[1] = '*'; 213 else 214 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); 215 } 216 fwrite(com_st, e_com - com_st, 1, output); 217 ps.comment_delta = ps.n_comment_delta; 218 cur_col = count_spaces(cur_col, com_st); 219 ++ps.com_lines; /* count lines with comments */ 220 } 221 if (ps.use_ff) 222 putc('\014', output); 223 else 224 putc('\n', output); 225 inhibit_newline: 226 ++ps.out_lines; 227 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 228 prefix_blankline_requested = 1; 229 ps.just_saw_decl = 0; 230 } 231 else 232 prefix_blankline_requested = postfix_blankline_requested; 233 postfix_blankline_requested = 0; 234 } 235 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 236 * declaration, remember that fact for 237 * proper comment indentation */ 238 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 239 * indented if we have not 240 * completed this stmt and if 241 * we are not in the middle of 242 * a declaration */ 243 ps.use_ff = false; 244 ps.dumped_decl_indent = 0; 245 *(e_lab = s_lab) = '\0'; /* reset buffers */ 246 *(e_code = s_code) = '\0'; 247 *(e_com = s_com) = '\0'; 248 ps.ind_level = ps.i_l_follow; 249 ps.paren_level = ps.p_l_follow; 250 paren_target = -ps.paren_indents[ps.paren_level - 1]; 251 not_first_line = 1; 252 return; 253 } 254 255 compute_code_target() 256 { 257 register target_col = ps.ind_size * ps.ind_level + 1; 258 259 if (ps.paren_level) 260 if (!lineup_to_parens) 261 target_col += continuation_indent * ps.paren_level; 262 else { 263 register w; 264 register t = paren_target; 265 266 if ((w = count_spaces(t, s_code) - max_col) > 0 267 && count_spaces(target_col, s_code) <= max_col) { 268 t -= w + 1; 269 if (t > target_col) 270 target_col = t; 271 } 272 else 273 target_col = t; 274 } 275 else if (ps.ind_stmt) 276 target_col += continuation_indent; 277 return target_col; 278 } 279 280 compute_label_target() 281 { 282 return 283 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 284 : *s_lab == '#' ? 1 285 : ps.ind_size * (ps.ind_level - label_offset) + 1; 286 } 287 288 289 /* 290 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 291 * 292 * All rights reserved 293 * 294 * 295 * NAME: fill_buffer 296 * 297 * FUNCTION: Reads one block of input into input_buffer 298 * 299 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 300 * Willcox of CAC Added check for switch back to partly full input 301 * buffer from temporary buffer 302 * 303 */ 304 int 305 fill_buffer() 306 { /* this routine reads stuff from the input */ 307 register char *p; 308 register int i; 309 register FILE *f = input; 310 311 if (bp_save != 0) { /* there is a partly filled input buffer left */ 312 buf_ptr = bp_save; /* dont read anything, just switch buffers */ 313 buf_end = be_save; 314 bp_save = be_save = 0; 315 if (buf_ptr < buf_end) 316 return; /* only return if there is really something in 317 * this buffer */ 318 } 319 for (p = in_buffer;;) { 320 if (p >= in_buffer_limit) { 321 register size = (in_buffer_limit - in_buffer) * 2 + 10; 322 register offset = p - in_buffer; 323 in_buffer = (char *) realloc(in_buffer, size); 324 if (in_buffer == 0) 325 err("input line too long"); 326 p = in_buffer + offset; 327 in_buffer_limit = in_buffer + size - 2; 328 } 329 if ((i = getc(f)) == EOF) { 330 *p++ = ' '; 331 *p++ = '\n'; 332 had_eof = true; 333 break; 334 } 335 *p++ = i; 336 if (i == '\n') 337 break; 338 } 339 buf_ptr = in_buffer; 340 buf_end = p; 341 if (p[-2] == '/' && p[-3] == '*') { 342 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 343 fill_buffer(); /* flush indent error message */ 344 else { 345 int com = 0; 346 347 p = in_buffer; 348 while (*p == ' ' || *p == '\t') 349 p++; 350 if (*p == '/' && p[1] == '*') { 351 p += 2; 352 while (*p == ' ' || *p == '\t') 353 p++; 354 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 355 && p[4] == 'N' && p[5] == 'T') { 356 p += 6; 357 while (*p == ' ' || *p == '\t') 358 p++; 359 if (*p == '*') 360 com = 1; 361 else if (*p == 'O') 362 if (*++p == 'N') 363 p++, com = 1; 364 else if (*p == 'F' && *++p == 'F') 365 p++, com = 2; 366 while (*p == ' ' || *p == '\t') 367 p++; 368 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 369 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 370 dump_line(); 371 if (!(inhibit_formatting = com - 1)) { 372 n_real_blanklines = 0; 373 postfix_blankline_requested = 0; 374 prefix_blankline_requested = 0; 375 suppress_blanklines = 1; 376 } 377 } 378 } 379 } 380 } 381 } 382 if (inhibit_formatting) { 383 p = in_buffer; 384 do 385 putc(*p, output); 386 while (*p++ != '\n'); 387 } 388 return; 389 } 390 391 /* 392 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 393 * 394 * All rights reserved 395 * 396 * 397 * NAME: pad_output 398 * 399 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 400 * position. 401 * 402 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 403 * 404 * PARAMETERS: current integer The current column target 405 * nteger The desired column 406 * 407 * RETURNS: Integer value of the new column. (If current >= target, no action is 408 * taken, and current is returned. 409 * 410 * GLOBALS: None 411 * 412 * CALLS: write (sys) 413 * 414 * CALLED BY: dump_line 415 * 416 * HISTORY: initial coding November 1976 D A Willcox of CAC 417 * 418 */ 419 pad_output(current, target) /* writes tabs and blanks (if necessary) to 420 * get the current output position up to the 421 * target column */ 422 int current; /* the current column value */ 423 int target; /* position we want it at */ 424 { 425 register int curr; /* internal column pointer */ 426 register int tcur; 427 428 if (troff) 429 fprintf(output, "\\h'|%dp'", (target - 1) * 7); 430 else { 431 if (current >= target) 432 return (current); /* line is already long enough */ 433 curr = current; 434 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { 435 putc('\t', output); 436 curr = tcur; 437 } 438 while (curr++ < target) 439 putc(' ', output); /* pad with final blanks */ 440 } 441 return (target); 442 } 443 444 /* 445 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 446 * 447 * All rights reserved 448 * 449 * 450 * NAME: count_spaces 451 * 452 * FUNCTION: Find out where printing of a given string will leave the current 453 * character position on output. 454 * 455 * ALGORITHM: Run thru input string and add appropriate values to current 456 * position. 457 * 458 * RETURNS: Integer value of position after printing "buffer" starting in column 459 * "current". 460 * 461 * HISTORY: initial coding November 1976 D A Willcox of CAC 462 * 463 */ 464 int 465 count_spaces(current, buffer) 466 /* 467 * this routine figures out where the character position will be after 468 * printing the text in buffer starting at column "current" 469 */ 470 int current; 471 char *buffer; 472 { 473 register char *buf; /* used to look thru buffer */ 474 register int cur; /* current character counter */ 475 476 cur = current; 477 478 for (buf = buffer; *buf != '\0'; ++buf) { 479 switch (*buf) { 480 481 case '\n': 482 case 014: /* form feed */ 483 cur = 1; 484 break; 485 486 case '\t': 487 cur = ((cur - 1) & tabmask) + tabsize + 1; 488 break; 489 490 case 010: /* backspace */ 491 --cur; 492 break; 493 494 default: 495 ++cur; 496 break; 497 } /* end of switch */ 498 } /* end of for loop */ 499 return (cur); 500 } 501 502 int found_err; 503 /* VARARGS2 */ 504 diag(level, msg, a, b) 505 char *msg; 506 { 507 if (level) 508 found_err = 1; 509 if (output == stdout) { 510 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 511 fprintf(stdout, msg, a, b); 512 fprintf(stdout, " */\n"); 513 } 514 else { 515 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 516 fprintf(stderr, msg, a, b); 517 fprintf(stderr, "\n"); 518 } 519 } 520 521 writefdef(f, nm) 522 register struct fstate *f; 523 { 524 fprintf(output, ".ds f%c %s\n.nr s%c %d\n", 525 nm, f->font, nm, f->size); 526 } 527 528 char * 529 chfont(of, nf, s) 530 register struct fstate *of, 531 *nf; 532 char *s; 533 { 534 if (of->font[0] != nf->font[0] 535 || of->font[1] != nf->font[1]) { 536 *s++ = '\\'; 537 *s++ = 'f'; 538 if (nf->font[1]) { 539 *s++ = '('; 540 *s++ = nf->font[0]; 541 *s++ = nf->font[1]; 542 } 543 else 544 *s++ = nf->font[0]; 545 } 546 if (nf->size != of->size) { 547 *s++ = '\\'; 548 *s++ = 's'; 549 if (nf->size < of->size) { 550 *s++ = '-'; 551 *s++ = '0' + of->size - nf->size; 552 } 553 else { 554 *s++ = '+'; 555 *s++ = '0' + nf->size - of->size; 556 } 557 } 558 return s; 559 } 560 561 562 parsefont(f, s0) 563 register struct fstate *f; 564 char *s0; 565 { 566 register char *s = s0; 567 int sizedelta = 0; 568 bzero(f, sizeof *f); 569 while (*s) { 570 if (isdigit(*s)) 571 f->size = f->size * 10 + *s - '0'; 572 else if (isupper(*s)) 573 if (f->font[0]) 574 f->font[1] = *s; 575 else 576 f->font[0] = *s; 577 else if (*s == 'c') 578 f->allcaps = 1; 579 else if (*s == '+') 580 sizedelta++; 581 else if (*s == '-') 582 sizedelta--; 583 else { 584 fprintf(stderr, "indent: bad font specification: %s\n", s0); 585 exit(1); 586 } 587 s++; 588 } 589 if (f->font[0] == 0) 590 f->font[0] = 'R'; 591 if (bodyf.size == 0) 592 bodyf.size = 11; 593 if (f->size == 0) 594 f->size = bodyf.size + sizedelta; 595 else if (sizedelta > 0) 596 f->size += bodyf.size; 597 else 598 f->size = bodyf.size - f->size; 599 } 600