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 * %sccs.include.redist.c% 8 */ 9 10 #ifndef lint 11 static char sccsid[] = "@(#)io.c 5.14 (Berkeley) 06/01/90"; 12 #endif /* not lint */ 13 14 #include "indent_globs.h" 15 #include <ctype.h> 16 17 18 int comment_open; 19 static paren_target; 20 21 dump_line() 22 { /* dump_line is the routine that actually 23 * effects the printing of the new source. It 24 * prints the label section, followed by the 25 * code section with the appropriate nesting 26 * level, followed by any comments */ 27 register int cur_col, 28 target_col; 29 static not_first_line; 30 31 if (ps.procname[0]) { 32 if (troff) { 33 if (comment_open) { 34 comment_open = 0; 35 fprintf(output, ".*/\n"); 36 } 37 fprintf(output, ".Pr \"%s\"\n", ps.procname); 38 } 39 ps.ind_level = 0; 40 ps.procname[0] = 0; 41 } 42 if (s_code == e_code && s_lab == e_lab && s_com == e_com) { 43 if (suppress_blanklines > 0) 44 suppress_blanklines--; 45 else { 46 ps.bl_line = true; 47 n_real_blanklines++; 48 } 49 } 50 else if (!inhibit_formatting) { 51 suppress_blanklines = 0; 52 ps.bl_line = false; 53 if (prefix_blankline_requested && not_first_line) 54 if (swallow_optional_blanklines) { 55 if (n_real_blanklines == 1) 56 n_real_blanklines = 0; 57 } 58 else { 59 if (n_real_blanklines == 0) 60 n_real_blanklines = 1; 61 } 62 while (--n_real_blanklines >= 0) 63 putc('\n', output); 64 n_real_blanklines = 0; 65 if (ps.ind_level == 0) 66 ps.ind_stmt = 0; /* this is a class A kludge. dont do 67 * additional statement indentation if we are 68 * at bracket level 0 */ 69 70 if (e_lab != s_lab || e_code != s_code) 71 ++code_lines; /* keep count of lines with code */ 72 73 74 if (e_lab != s_lab) { /* print lab, if any */ 75 if (comment_open) { 76 comment_open = 0; 77 fprintf(output, ".*/\n"); 78 } 79 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 80 e_lab--; 81 cur_col = pad_output(1, compute_label_target()); 82 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 83 || strncmp(s_lab, "#endif", 6) == 0)) { 84 register char *s = s_lab; 85 if (e_lab[-1] == '\n') e_lab--; 86 do putc(*s++, output); 87 while (s < e_lab && 'a' <= *s && *s<='z'); 88 while ((*s == ' ' || *s == '\t') && s < e_lab) 89 s++; 90 if (s < e_lab) 91 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", 92 e_lab - s, s); 93 } 94 else fprintf(output, "%.*s", e_lab - s_lab, s_lab); 95 cur_col = count_spaces(cur_col, s_lab); 96 } 97 else 98 cur_col = 1; /* there is no label section */ 99 100 ps.pcase = false; 101 102 if (s_code != e_code) { /* print code section, if any */ 103 register char *p; 104 105 if (comment_open) { 106 comment_open = 0; 107 fprintf(output, ".*/\n"); 108 } 109 target_col = compute_code_target(); 110 { 111 register i; 112 113 for (i = 0; i < ps.p_l_follow; i++) 114 if (ps.paren_indents[i] >= 0) 115 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); 116 } 117 cur_col = pad_output(cur_col, target_col); 118 for (p = s_code; p < e_code; p++) 119 if (*p == (char) 0200) 120 fprintf(output, "%d", target_col * 7); 121 else 122 putc(*p, output); 123 cur_col = count_spaces(cur_col, s_code); 124 } 125 if (s_com != e_com) 126 if (troff) { 127 int all_here = 0; 128 register char *p; 129 130 if (e_com[-1] == '/' && e_com[-2] == '*') 131 e_com -= 2, all_here++; 132 while (e_com > s_com && e_com[-1] == ' ') 133 e_com--; 134 *e_com = 0; 135 p = s_com; 136 while (*p == ' ') 137 p++; 138 if (p[0] == '/' && p[1] == '*') 139 p += 2, all_here++; 140 else if (p[0] == '*') 141 p += p[1] == '/' ? 2 : 1; 142 while (*p == ' ') 143 p++; 144 if (*p == 0) 145 goto inhibit_newline; 146 if (comment_open < 2 && ps.box_com) { 147 comment_open = 0; 148 fprintf(output, ".*/\n"); 149 } 150 if (comment_open == 0) { 151 if ('a' <= *p && *p <= 'z') 152 *p = *p + 'A' - 'a'; 153 if (e_com - p < 50 && all_here == 2) { 154 register char *follow = p; 155 fprintf(output, "\n.nr C! \\w\1"); 156 while (follow < e_com) { 157 switch (*follow) { 158 case '\n': 159 putc(' ', output); 160 case 1: 161 break; 162 case '\\': 163 putc('\\', output); 164 default: 165 putc(*follow, output); 166 } 167 follow++; 168 } 169 putc(1, output); 170 } 171 fprintf(output, "\n./* %dp %d %dp\n", 172 ps.com_col * 7, 173 (s_code != e_code || s_lab != e_lab) - ps.box_com, 174 target_col * 7); 175 } 176 comment_open = 1 + ps.box_com; 177 while (*p) { 178 if (*p == BACKSLASH) 179 putc(BACKSLASH, output); 180 putc(*p++, output); 181 } 182 } 183 else { /* print comment, if any */ 184 register target = ps.com_col; 185 register char *com_st = s_com; 186 187 target += ps.comment_delta; 188 while (*com_st == '\t') 189 com_st++, target += 8; /* ? */ 190 while (target <= 0) 191 if (*com_st == ' ') 192 target++, com_st++; 193 else if (*com_st == '\t') 194 target = ((target - 1) & ~7) + 9, com_st++; 195 else 196 target = 1; 197 if (cur_col > target) { /* if comment cant fit on this line, 198 * put it on next line */ 199 putc('\n', output); 200 cur_col = 1; 201 ++ps.out_lines; 202 } 203 while (e_com > com_st && isspace(e_com[-1])) 204 e_com--; 205 cur_col = pad_output(cur_col, target); 206 if (!ps.box_com) { 207 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) 208 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) 209 com_st[1] = '*'; 210 else 211 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); 212 } 213 fwrite(com_st, e_com - com_st, 1, output); 214 ps.comment_delta = ps.n_comment_delta; 215 cur_col = count_spaces(cur_col, com_st); 216 ++ps.com_lines; /* count lines with comments */ 217 } 218 if (ps.use_ff) 219 putc('\014', output); 220 else 221 putc('\n', output); 222 inhibit_newline: 223 ++ps.out_lines; 224 if (ps.just_saw_decl == 1 && blanklines_after_declarations) { 225 prefix_blankline_requested = 1; 226 ps.just_saw_decl = 0; 227 } 228 else 229 prefix_blankline_requested = postfix_blankline_requested; 230 postfix_blankline_requested = 0; 231 } 232 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a 233 * declaration, remember that fact for 234 * proper comment indentation */ 235 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be 236 * indented if we have not 237 * completed this stmt and if 238 * we are not in the middle of 239 * a declaration */ 240 ps.use_ff = false; 241 ps.dumped_decl_indent = 0; 242 *(e_lab = s_lab) = '\0'; /* reset buffers */ 243 *(e_code = s_code) = '\0'; 244 *(e_com = s_com) = '\0'; 245 ps.ind_level = ps.i_l_follow; 246 ps.paren_level = ps.p_l_follow; 247 paren_target = -ps.paren_indents[ps.paren_level - 1]; 248 not_first_line = 1; 249 return; 250 } 251 252 compute_code_target() 253 { 254 register target_col = ps.ind_size * ps.ind_level + 1; 255 256 if (ps.paren_level) 257 if (!lineup_to_parens) 258 target_col += continuation_indent * ps.paren_level; 259 else { 260 register w; 261 register t = paren_target; 262 263 if ((w = count_spaces(t, s_code) - max_col) > 0 264 && count_spaces(target_col, s_code) <= max_col) { 265 t -= w + 1; 266 if (t > target_col) 267 target_col = t; 268 } 269 else 270 target_col = t; 271 } 272 else if (ps.ind_stmt) 273 target_col += continuation_indent; 274 return target_col; 275 } 276 277 compute_label_target() 278 { 279 return 280 ps.pcase ? (int) (case_ind * ps.ind_size) + 1 281 : *s_lab == '#' ? 1 282 : ps.ind_size * (ps.ind_level - label_offset) + 1; 283 } 284 285 286 /* 287 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 288 * 289 * All rights reserved 290 * 291 * 292 * NAME: fill_buffer 293 * 294 * FUNCTION: Reads one block of input into input_buffer 295 * 296 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A 297 * Willcox of CAC Added check for switch back to partly full input 298 * buffer from temporary buffer 299 * 300 */ 301 int 302 fill_buffer() 303 { /* this routine reads stuff from the input */ 304 register char *p; 305 register int i; 306 register FILE *f = input; 307 308 if (bp_save != 0) { /* there is a partly filled input buffer left */ 309 buf_ptr = bp_save; /* dont read anything, just switch buffers */ 310 buf_end = be_save; 311 bp_save = be_save = 0; 312 if (buf_ptr < buf_end) 313 return; /* only return if there is really something in 314 * this buffer */ 315 } 316 for (p = in_buffer;;) { 317 if (p >= in_buffer_limit) { 318 register size = (in_buffer_limit - in_buffer) * 2 + 10; 319 register offset = p - in_buffer; 320 in_buffer = (char *) realloc(in_buffer, size); 321 if (in_buffer == 0) 322 err("input line too long"); 323 p = in_buffer + offset; 324 in_buffer_limit = in_buffer + size - 2; 325 } 326 if ((i = getc(f)) == EOF) { 327 *p++ = ' '; 328 *p++ = '\n'; 329 had_eof = true; 330 break; 331 } 332 *p++ = i; 333 if (i == '\n') 334 break; 335 } 336 buf_ptr = in_buffer; 337 buf_end = p; 338 if (p[-2] == '/' && p[-3] == '*') { 339 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) 340 fill_buffer(); /* flush indent error message */ 341 else { 342 int com = 0; 343 344 p = in_buffer; 345 while (*p == ' ' || *p == '\t') 346 p++; 347 if (*p == '/' && p[1] == '*') { 348 p += 2; 349 while (*p == ' ' || *p == '\t') 350 p++; 351 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' 352 && p[4] == 'N' && p[5] == 'T') { 353 p += 6; 354 while (*p == ' ' || *p == '\t') 355 p++; 356 if (*p == '*') 357 com = 1; 358 else if (*p == 'O') 359 if (*++p == 'N') 360 p++, com = 1; 361 else if (*p == 'F' && *++p == 'F') 362 p++, com = 2; 363 while (*p == ' ' || *p == '\t') 364 p++; 365 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { 366 if (s_com != e_com || s_lab != e_lab || s_code != e_code) 367 dump_line(); 368 if (!(inhibit_formatting = com - 1)) { 369 n_real_blanklines = 0; 370 postfix_blankline_requested = 0; 371 prefix_blankline_requested = 0; 372 suppress_blanklines = 1; 373 } 374 } 375 } 376 } 377 } 378 } 379 if (inhibit_formatting) { 380 p = in_buffer; 381 do 382 putc(*p, output); 383 while (*p++ != '\n'); 384 } 385 return; 386 } 387 388 /* 389 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 390 * 391 * All rights reserved 392 * 393 * 394 * NAME: pad_output 395 * 396 * FUNCTION: Writes tabs and spaces to move the current column up to the desired 397 * position. 398 * 399 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. 400 * 401 * PARAMETERS: current integer The current column target 402 * nteger The desired column 403 * 404 * RETURNS: Integer value of the new column. (If current >= target, no action is 405 * taken, and current is returned. 406 * 407 * GLOBALS: None 408 * 409 * CALLS: write (sys) 410 * 411 * CALLED BY: dump_line 412 * 413 * HISTORY: initial coding November 1976 D A Willcox of CAC 414 * 415 */ 416 pad_output(current, target) /* writes tabs and blanks (if necessary) to 417 * get the current output position up to the 418 * target column */ 419 int current; /* the current column value */ 420 int target; /* position we want it at */ 421 { 422 register int curr; /* internal column pointer */ 423 register int tcur; 424 425 if (troff) 426 fprintf(output, "\\h'|%dp'", (target - 1) * 7); 427 else { 428 if (current >= target) 429 return (current); /* line is already long enough */ 430 curr = current; 431 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { 432 putc('\t', output); 433 curr = tcur; 434 } 435 while (curr++ < target) 436 putc(' ', output); /* pad with final blanks */ 437 } 438 return (target); 439 } 440 441 /* 442 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois 443 * 444 * All rights reserved 445 * 446 * 447 * NAME: count_spaces 448 * 449 * FUNCTION: Find out where printing of a given string will leave the current 450 * character position on output. 451 * 452 * ALGORITHM: Run thru input string and add appropriate values to current 453 * position. 454 * 455 * RETURNS: Integer value of position after printing "buffer" starting in column 456 * "current". 457 * 458 * HISTORY: initial coding November 1976 D A Willcox of CAC 459 * 460 */ 461 int 462 count_spaces(current, buffer) 463 /* 464 * this routine figures out where the character position will be after 465 * printing the text in buffer starting at column "current" 466 */ 467 int current; 468 char *buffer; 469 { 470 register char *buf; /* used to look thru buffer */ 471 register int cur; /* current character counter */ 472 473 cur = current; 474 475 for (buf = buffer; *buf != '\0'; ++buf) { 476 switch (*buf) { 477 478 case '\n': 479 case 014: /* form feed */ 480 cur = 1; 481 break; 482 483 case '\t': 484 cur = ((cur - 1) & tabmask) + tabsize + 1; 485 break; 486 487 case 010: /* backspace */ 488 --cur; 489 break; 490 491 default: 492 ++cur; 493 break; 494 } /* end of switch */ 495 } /* end of for loop */ 496 return (cur); 497 } 498 499 int found_err; 500 /* VARARGS2 */ 501 diag(level, msg, a, b) 502 { 503 if (level) 504 found_err = 1; 505 if (output == stdout) { 506 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); 507 fprintf(stdout, msg, a, b); 508 fprintf(stdout, " */\n"); 509 } 510 else { 511 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); 512 fprintf(stderr, msg, a, b); 513 fprintf(stderr, "\n"); 514 } 515 } 516 517 writefdef(f, nm) 518 register struct fstate *f; 519 { 520 fprintf(output, ".ds f%c %s\n.nr s%c %d\n", 521 nm, f->font, nm, f->size); 522 } 523 524 char * 525 chfont(of, nf, s) 526 register struct fstate *of, 527 *nf; 528 char *s; 529 { 530 if (of->font[0] != nf->font[0] 531 || of->font[1] != nf->font[1]) { 532 *s++ = '\\'; 533 *s++ = 'f'; 534 if (nf->font[1]) { 535 *s++ = '('; 536 *s++ = nf->font[0]; 537 *s++ = nf->font[1]; 538 } 539 else 540 *s++ = nf->font[0]; 541 } 542 if (nf->size != of->size) { 543 *s++ = '\\'; 544 *s++ = 's'; 545 if (nf->size < of->size) { 546 *s++ = '-'; 547 *s++ = '0' + of->size - nf->size; 548 } 549 else { 550 *s++ = '+'; 551 *s++ = '0' + nf->size - of->size; 552 } 553 } 554 return s; 555 } 556 557 558 parsefont(f, s0) 559 register struct fstate *f; 560 char *s0; 561 { 562 register char *s = s0; 563 int sizedelta = 0; 564 bzero(f, sizeof *f); 565 while (*s) { 566 if (isdigit(*s)) 567 f->size = f->size * 10 + *s - '0'; 568 else if (isupper(*s)) 569 if (f->font[0]) 570 f->font[1] = *s; 571 else 572 f->font[0] = *s; 573 else if (*s == 'c') 574 f->allcaps = 1; 575 else if (*s == '+') 576 sizedelta++; 577 else if (*s == '-') 578 sizedelta--; 579 else { 580 fprintf(stderr, "indent: bad font specification: %s\n", s0); 581 exit(1); 582 } 583 s++; 584 } 585 if (f->font[0] == 0) 586 f->font[0] = 'R'; 587 if (bodyf.size == 0) 588 bodyf.size = 11; 589 if (f->size == 0) 590 f->size = bodyf.size + sizedelta; 591 else if (sizedelta > 0) 592 f->size += bodyf.size; 593 else 594 f->size = bodyf.size - f->size; 595 } 596