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, 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 char copyright[] = 38 "@(#) Copyright (c) 1985 Sun Microsystems, Inc.\n\ 39 @(#) Copyright (c) 1980 The Regents of the University of California.\n\ 40 @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.\n\ 41 All rights reserved.\n"; 42 #endif /* not lint */ 43 44 #ifndef lint 45 /*static char sccsid[] = "from: @(#)indent.c 5.16 (Berkeley) 2/26/91";*/ 46 static char rcsid[] = "$Id: indent.c,v 1.2 1993/08/01 18:14:33 mycroft Exp $"; 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <fcntl.h> 51 #include <unistd.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include "indent_globs.h" 56 #include "indent_codes.h" 57 #include <ctype.h> 58 59 char *in_name = "Standard Input"; /* will always point to name of input 60 * file */ 61 char *out_name = "Standard Output"; /* will always point to name 62 * of output file */ 63 char bakfile[MAXPATHLEN] = ""; 64 65 main(argc, argv) 66 int argc; 67 char **argv; 68 { 69 70 extern int found_err; /* flag set in diag() on error */ 71 int dec_ind; /* current indentation for declarations */ 72 int di_stack[20]; /* a stack of structure indentation levels */ 73 int flushed_nl; /* used when buffering up comments to remember 74 * that a newline was passed over */ 75 int force_nl; /* when true, code must be broken */ 76 int hd_type; /* used to store type of stmt for if (...), 77 * for (...), etc */ 78 register int i; /* local loop counter */ 79 int scase; /* set to true when we see a case, so we will 80 * know what to do with the following colon */ 81 int sp_sw; /* when true, we are in the expressin of 82 * if(...), while(...), etc. */ 83 int squest; /* when this is positive, we have seen a ? 84 * without the matching : in a <c>?<s>:<s> 85 * construct */ 86 register char *t_ptr; /* used for copying tokens */ 87 int type_code; /* the type of token, returned by lexi */ 88 89 int last_else = 0; /* true iff last keyword was an else */ 90 91 92 /*-----------------------------------------------*\ 93 | INITIALIZATION | 94 \*-----------------------------------------------*/ 95 96 97 ps.p_stack[0] = stmt; /* this is the parser's stack */ 98 ps.last_nl = true; /* this is true if the last thing scanned was 99 * a newline */ 100 ps.last_token = semicolon; 101 combuf = (char *) malloc(bufsize); 102 labbuf = (char *) malloc(bufsize); 103 codebuf = (char *) malloc(bufsize); 104 tokenbuf = (char *) malloc(bufsize); 105 l_com = combuf + bufsize - 5; 106 l_lab = labbuf + bufsize - 5; 107 l_code = codebuf + bufsize - 5; 108 l_token = tokenbuf + bufsize - 5; 109 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and 110 * comment buffers */ 111 combuf[1] = codebuf[1] = labbuf[1] = '\0'; 112 ps.else_if = 1; /* Default else-if special processing to on */ 113 s_lab = e_lab = labbuf + 1; 114 s_code = e_code = codebuf + 1; 115 s_com = e_com = combuf + 1; 116 s_token = e_token = tokenbuf + 1; 117 118 in_buffer = (char *) malloc(10); 119 in_buffer_limit = in_buffer + 8; 120 buf_ptr = buf_end = in_buffer; 121 line_no = 1; 122 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false; 123 sp_sw = force_nl = false; 124 ps.in_or_st = false; 125 ps.bl_line = true; 126 dec_ind = 0; 127 di_stack[ps.dec_nest = 0] = 0; 128 ps.want_blank = ps.in_stmt = ps.ind_stmt = false; 129 130 131 scase = ps.pcase = false; 132 squest = 0; 133 sc_end = 0; 134 bp_save = 0; 135 be_save = 0; 136 137 output = 0; 138 139 140 141 /*--------------------------------------------------*\ 142 | COMMAND LINE SCAN | 143 \*--------------------------------------------------*/ 144 145 #ifdef undef 146 max_col = 78; /* -l78 */ 147 lineup_to_parens = 1; /* -lp */ 148 ps.ljust_decl = 0; /* -ndj */ 149 ps.com_ind = 33; /* -c33 */ 150 star_comment_cont = 1; /* -sc */ 151 ps.ind_size = 8; /* -i8 */ 152 verbose = 0; 153 ps.decl_indent = 16; /* -di16 */ 154 ps.indent_parameters = 1; /* -ip */ 155 ps.decl_com_ind = 0; /* if this is not set to some positive value 156 * by an arg, we will set this equal to 157 * ps.com_ind */ 158 btype_2 = 1; /* -br */ 159 cuddle_else = 1; /* -ce */ 160 ps.unindent_displace = 0; /* -d0 */ 161 ps.case_indent = 0; /* -cli0 */ 162 format_col1_comments = 1; /* -fc1 */ 163 procnames_start_line = 1; /* -psl */ 164 proc_calls_space = 0; /* -npcs */ 165 comment_delimiter_on_blankline = 1; /* -cdb */ 166 ps.leave_comma = 1; /* -nbc */ 167 #endif 168 169 for (i = 1; i < argc; ++i) 170 if (strcmp(argv[i], "-npro") == 0) 171 break; 172 set_defaults(); 173 if (i >= argc) 174 set_profile(); 175 176 for (i = 1; i < argc; ++i) { 177 178 /* 179 * look thru args (if any) for changes to defaults 180 */ 181 if (argv[i][0] != '-') {/* no flag on parameter */ 182 if (input == 0) { /* we must have the input file */ 183 in_name = argv[i]; /* remember name of input file */ 184 input = fopen(in_name, "r"); 185 if (input == 0) /* check for open error */ 186 err(in_name); 187 continue; 188 } 189 else if (output == 0) { /* we have the output file */ 190 out_name = argv[i]; /* remember name of output file */ 191 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite 192 * the file */ 193 fprintf(stderr, "indent: input and output files must be different\n"); 194 exit(1); 195 } 196 output = fopen(out_name, "w"); 197 if (output == 0) /* check for create error */ 198 err(out_name); 199 continue; 200 } 201 fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]); 202 exit(1); 203 } 204 else 205 set_option(argv[i]); 206 } /* end of for */ 207 if (input == 0) { 208 fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n"); 209 exit(1); 210 } 211 if (output == 0) 212 if (troff) 213 output = stdout; 214 else { 215 out_name = in_name; 216 bakcopy(); 217 } 218 if (ps.com_ind <= 1) 219 ps.com_ind = 2; /* dont put normal comments before column 2 */ 220 if (troff) { 221 if (bodyf.font[0] == 0) 222 parsefont(&bodyf, "R"); 223 if (scomf.font[0] == 0) 224 parsefont(&scomf, "I"); 225 if (blkcomf.font[0] == 0) 226 blkcomf = scomf, blkcomf.size += 2; 227 if (boxcomf.font[0] == 0) 228 boxcomf = blkcomf; 229 if (stringf.font[0] == 0) 230 parsefont(&stringf, "L"); 231 if (keywordf.font[0] == 0) 232 parsefont(&keywordf, "B"); 233 writefdef(&bodyf, 'B'); 234 writefdef(&scomf, 'C'); 235 writefdef(&blkcomf, 'L'); 236 writefdef(&boxcomf, 'X'); 237 writefdef(&stringf, 'S'); 238 writefdef(&keywordf, 'K'); 239 } 240 if (block_comment_max_col <= 0) 241 block_comment_max_col = max_col; 242 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */ 243 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind; 244 if (continuation_indent == 0) 245 continuation_indent = ps.ind_size; 246 fill_buffer(); /* get first batch of stuff into input buffer */ 247 248 parse(semicolon); 249 { 250 register char *p = buf_ptr; 251 register col = 1; 252 253 while (1) { 254 if (*p == ' ') 255 col++; 256 else if (*p == '\t') 257 col = ((col - 1) & ~7) + 9; 258 else 259 break; 260 p++; 261 } 262 if (col > ps.ind_size) 263 ps.ind_level = ps.i_l_follow = col / ps.ind_size; 264 } 265 if (troff) { 266 register char *p = in_name, 267 *beg = in_name; 268 269 while (*p) 270 if (*p++ == '/') 271 beg = p; 272 fprintf(output, ".Fn \"%s\"\n", beg); 273 } 274 /* 275 * START OF MAIN LOOP 276 */ 277 278 while (1) { /* this is the main loop. it will go until we 279 * reach eof */ 280 int is_procname; 281 282 type_code = lexi(); /* lexi reads one token. The actual 283 * characters read are stored in "token". lexi 284 * returns a code indicating the type of token */ 285 is_procname = ps.procname[0]; 286 287 /* 288 * The following code moves everything following an if (), while (), 289 * else, etc. up to the start of the following stmt to a buffer. This 290 * allows proper handling of both kinds of brace placement. 291 */ 292 293 flushed_nl = false; 294 while (ps.search_brace) { /* if we scanned an if(), while(), 295 * etc., we might need to copy stuff 296 * into a buffer we must loop, copying 297 * stuff into save_com, until we find 298 * the start of the stmt which follows 299 * the if, or whatever */ 300 switch (type_code) { 301 case newline: 302 ++line_no; 303 flushed_nl = true; 304 case form_feed: 305 break; /* form feeds and newlines found here will be 306 * ignored */ 307 308 case lbrace: /* this is a brace that starts the compound 309 * stmt */ 310 if (sc_end == 0) { /* ignore buffering if a comment wasnt 311 * stored up */ 312 ps.search_brace = false; 313 goto check_type; 314 } 315 if (btype_2) { 316 save_com[0] = '{'; /* we either want to put the brace 317 * right after the if */ 318 goto sw_buffer; /* go to common code to get out of 319 * this loop */ 320 } 321 case comment: /* we have a comment, so we must copy it into 322 * the buffer */ 323 if (!flushed_nl || sc_end != 0) { 324 if (sc_end == 0) { /* if this is the first comment, we 325 * must set up the buffer */ 326 save_com[0] = save_com[1] = ' '; 327 sc_end = &(save_com[2]); 328 } 329 else { 330 *sc_end++ = '\n'; /* add newline between 331 * comments */ 332 *sc_end++ = ' '; 333 --line_no; 334 } 335 *sc_end++ = '/'; /* copy in start of comment */ 336 *sc_end++ = '*'; 337 338 for (;;) { /* loop until we get to the end of the comment */ 339 *sc_end = *buf_ptr++; 340 if (buf_ptr >= buf_end) 341 fill_buffer(); 342 343 if (*sc_end++ == '*' && *buf_ptr == '/') 344 break; /* we are at end of comment */ 345 346 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer 347 * overflow */ 348 diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever."); 349 fflush(output); 350 exit(1); 351 } 352 } 353 *sc_end++ = '/'; /* add ending slash */ 354 if (++buf_ptr >= buf_end) /* get past / in buffer */ 355 fill_buffer(); 356 break; 357 } 358 default: /* it is the start of a normal statment */ 359 if (flushed_nl) /* if we flushed a newline, make sure it is 360 * put back */ 361 force_nl = true; 362 if (type_code == sp_paren && *token == 'i' 363 && last_else && ps.else_if 364 || type_code == sp_nparen && *token == 'e' 365 && e_code != s_code && e_code[-1] == '}') 366 force_nl = false; 367 368 if (sc_end == 0) { /* ignore buffering if comment wasnt 369 * saved up */ 370 ps.search_brace = false; 371 goto check_type; 372 } 373 if (force_nl) { /* if we should insert a nl here, put it into 374 * the buffer */ 375 force_nl = false; 376 --line_no; /* this will be re-increased when the nl is 377 * read from the buffer */ 378 *sc_end++ = '\n'; 379 *sc_end++ = ' '; 380 if (verbose && !flushed_nl) /* print error msg if the line 381 * was not already broken */ 382 diag(0, "Line broken"); 383 flushed_nl = false; 384 } 385 for (t_ptr = token; *t_ptr; ++t_ptr) 386 *sc_end++ = *t_ptr; /* copy token into temp buffer */ 387 ps.procname[0] = 0; 388 389 sw_buffer: 390 ps.search_brace = false; /* stop looking for start of 391 * stmt */ 392 bp_save = buf_ptr; /* save current input buffer */ 393 be_save = buf_end; 394 buf_ptr = save_com; /* fix so that subsequent calls to 395 * lexi will take tokens out of 396 * save_com */ 397 *sc_end++ = ' ';/* add trailing blank, just in case */ 398 buf_end = sc_end; 399 sc_end = 0; 400 break; 401 } /* end of switch */ 402 if (type_code != 0) /* we must make this check, just in case there 403 * was an unexpected EOF */ 404 type_code = lexi(); /* read another token */ 405 /* if (ps.search_brace) ps.procname[0] = 0; */ 406 if ((is_procname = ps.procname[0]) && flushed_nl 407 && !procnames_start_line && ps.in_decl 408 && type_code == ident) 409 flushed_nl = 0; 410 } /* end of while (search_brace) */ 411 last_else = 0; 412 check_type: 413 if (type_code == 0) { /* we got eof */ 414 if (s_lab != e_lab || s_code != e_code 415 || s_com != e_com) /* must dump end of line */ 416 dump_line(); 417 if (ps.tos > 1) /* check for balanced braces */ 418 diag(1, "Stuff missing from end of file."); 419 420 if (verbose) { 421 printf("There were %d output lines and %d comments\n", 422 ps.out_lines, ps.out_coms); 423 printf("(Lines with comments)/(Lines with code): %6.3f\n", 424 (1.0 * ps.com_lines) / code_lines); 425 } 426 fflush(output); 427 exit(found_err); 428 } 429 if ( 430 (type_code != comment) && 431 (type_code != newline) && 432 (type_code != preesc) && 433 (type_code != form_feed)) { 434 if (force_nl && 435 (type_code != semicolon) && 436 (type_code != lbrace || !btype_2)) { 437 /* we should force a broken line here */ 438 if (verbose && !flushed_nl) 439 diag(0, "Line broken"); 440 flushed_nl = false; 441 dump_line(); 442 ps.want_blank = false; /* dont insert blank at line start */ 443 force_nl = false; 444 } 445 ps.in_stmt = true; /* turn on flag which causes an extra level of 446 * indentation. this is turned off by a ; or 447 * '}' */ 448 if (s_com != e_com) { /* the turkey has embedded a comment 449 * in a line. fix it */ 450 *e_code++ = ' '; 451 for (t_ptr = s_com; *t_ptr; ++t_ptr) { 452 CHECK_SIZE_CODE; 453 *e_code++ = *t_ptr; 454 } 455 *e_code++ = ' '; 456 *e_code = '\0'; /* null terminate code sect */ 457 ps.want_blank = false; 458 e_com = s_com; 459 } 460 } 461 else if (type_code != comment) /* preserve force_nl thru a comment */ 462 force_nl = false; /* cancel forced newline after newline, form 463 * feed, etc */ 464 465 466 467 /*-----------------------------------------------------*\ 468 | do switch on type of token scanned | 469 \*-----------------------------------------------------*/ 470 CHECK_SIZE_CODE; 471 switch (type_code) { /* now, decide what to do with the token */ 472 473 case form_feed: /* found a form feed in line */ 474 ps.use_ff = true; /* a form feed is treated much like a newline */ 475 dump_line(); 476 ps.want_blank = false; 477 break; 478 479 case newline: 480 if (ps.last_token != comma || ps.p_l_follow > 0 481 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) { 482 dump_line(); 483 ps.want_blank = false; 484 } 485 ++line_no; /* keep track of input line number */ 486 break; 487 488 case lparen: /* got a '(' or '[' */ 489 ++ps.p_l_follow; /* count parens to make Healy happy */ 490 if (ps.want_blank && *token != '[' && 491 (ps.last_token != ident || proc_calls_space 492 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon)))) 493 *e_code++ = ' '; 494 if (ps.in_decl && !ps.block_init) 495 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) { 496 ps.dumped_decl_indent = 1; 497 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 498 e_code += strlen(e_code); 499 } 500 else { 501 while ((e_code - s_code) < dec_ind) { 502 CHECK_SIZE_CODE; 503 *e_code++ = ' '; 504 } 505 *e_code++ = token[0]; 506 } 507 else 508 *e_code++ = token[0]; 509 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code; 510 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent 511 && ps.paren_indents[0] < 2 * ps.ind_size) 512 ps.paren_indents[0] = 2 * ps.ind_size; 513 ps.want_blank = false; 514 if (ps.in_or_st && *token == '(' && ps.tos <= 2) { 515 /* 516 * this is a kluge to make sure that declarations will be 517 * aligned right if proc decl has an explicit type on it, i.e. 518 * "int a(x) {..." 519 */ 520 parse(semicolon); /* I said this was a kluge... */ 521 ps.in_or_st = false; /* turn off flag for structure decl or 522 * initialization */ 523 } 524 if (ps.sizeof_keyword) 525 ps.sizeof_mask |= 1 << ps.p_l_follow; 526 break; 527 528 case rparen: /* got a ')' or ']' */ 529 rparen_count--; 530 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) { 531 ps.last_u_d = true; 532 ps.cast_mask &= (1 << ps.p_l_follow) - 1; 533 } 534 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1; 535 if (--ps.p_l_follow < 0) { 536 ps.p_l_follow = 0; 537 diag(0, "Extra %c", *token); 538 } 539 if (e_code == s_code) /* if the paren starts the line */ 540 ps.paren_level = ps.p_l_follow; /* then indent it */ 541 542 *e_code++ = token[0]; 543 ps.want_blank = true; 544 545 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if 546 * (...), or some such */ 547 sp_sw = false; 548 force_nl = true;/* must force newline after if */ 549 ps.last_u_d = true; /* inform lexi that a following 550 * operator is unary */ 551 ps.in_stmt = false; /* dont use stmt continuation 552 * indentation */ 553 554 parse(hd_type); /* let parser worry about if, or whatever */ 555 } 556 ps.search_brace = btype_2; /* this should insure that constructs 557 * such as main(){...} and int[]{...} 558 * have their braces put in the right 559 * place */ 560 break; 561 562 case unary_op: /* this could be any unary operation */ 563 if (ps.want_blank) 564 *e_code++ = ' '; 565 566 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) { 567 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 568 ps.dumped_decl_indent = 1; 569 e_code += strlen(e_code); 570 } 571 else { 572 char *res = token; 573 574 if (ps.in_decl && !ps.block_init) { /* if this is a unary op 575 * in a declaration, we 576 * should indent this 577 * token */ 578 for (i = 0; token[i]; ++i); /* find length of token */ 579 while ((e_code - s_code) < (dec_ind - i)) { 580 CHECK_SIZE_CODE; 581 *e_code++ = ' '; /* pad it */ 582 } 583 } 584 if (troff && token[0] == '-' && token[1] == '>') 585 res = "\\(->"; 586 for (t_ptr = res; *t_ptr; ++t_ptr) { 587 CHECK_SIZE_CODE; 588 *e_code++ = *t_ptr; 589 } 590 } 591 ps.want_blank = false; 592 break; 593 594 case binary_op: /* any binary operation */ 595 if (ps.want_blank) 596 *e_code++ = ' '; 597 { 598 char *res = token; 599 600 if (troff) 601 switch (token[0]) { 602 case '<': 603 if (token[1] == '=') 604 res = "\\(<="; 605 break; 606 case '>': 607 if (token[1] == '=') 608 res = "\\(>="; 609 break; 610 case '!': 611 if (token[1] == '=') 612 res = "\\(!="; 613 break; 614 case '|': 615 if (token[1] == '|') 616 res = "\\(br\\(br"; 617 else if (token[1] == 0) 618 res = "\\(br"; 619 break; 620 } 621 for (t_ptr = res; *t_ptr; ++t_ptr) { 622 CHECK_SIZE_CODE; 623 *e_code++ = *t_ptr; /* move the operator */ 624 } 625 } 626 ps.want_blank = true; 627 break; 628 629 case postop: /* got a trailing ++ or -- */ 630 *e_code++ = token[0]; 631 *e_code++ = token[1]; 632 ps.want_blank = true; 633 break; 634 635 case question: /* got a ? */ 636 squest++; /* this will be used when a later colon 637 * appears so we can distinguish the 638 * <c>?<n>:<n> construct */ 639 if (ps.want_blank) 640 *e_code++ = ' '; 641 *e_code++ = '?'; 642 ps.want_blank = true; 643 break; 644 645 case casestmt: /* got word 'case' or 'default' */ 646 scase = true; /* so we can process the later colon properly */ 647 goto copy_id; 648 649 case colon: /* got a ':' */ 650 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ 651 --squest; 652 if (ps.want_blank) 653 *e_code++ = ' '; 654 *e_code++ = ':'; 655 ps.want_blank = true; 656 break; 657 } 658 if (ps.in_decl) { 659 *e_code++ = ':'; 660 ps.want_blank = false; 661 break; 662 } 663 ps.in_stmt = false; /* seeing a label does not imply we are in a 664 * stmt */ 665 for (t_ptr = s_code; *t_ptr; ++t_ptr) 666 *e_lab++ = *t_ptr; /* turn everything so far into a label */ 667 e_code = s_code; 668 *e_lab++ = ':'; 669 *e_lab++ = ' '; 670 *e_lab = '\0'; 671 672 force_nl = ps.pcase = scase; /* ps.pcase will be used by 673 * dump_line to decide how to 674 * indent the label. force_nl 675 * will force a case n: to be 676 * on a line by itself */ 677 scase = false; 678 ps.want_blank = false; 679 break; 680 681 case semicolon: /* got a ';' */ 682 ps.in_or_st = false;/* we are not in an initialization or 683 * structure declaration */ 684 scase = false; /* these will only need resetting in a error */ 685 squest = 0; 686 if (ps.last_token == rparen && rparen_count == 0) 687 ps.in_parameter_declaration = 0; 688 ps.cast_mask = 0; 689 ps.sizeof_mask = 0; 690 ps.block_init = 0; 691 ps.block_init_level = 0; 692 ps.just_saw_decl--; 693 694 if (ps.in_decl && s_code == e_code && !ps.block_init) 695 while ((e_code - s_code) < (dec_ind - 1)) { 696 CHECK_SIZE_CODE; 697 *e_code++ = ' '; 698 } 699 700 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level 701 * structure declaration, we 702 * arent any more */ 703 704 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) { 705 706 /* 707 * This should be true iff there were unbalanced parens in the 708 * stmt. It is a bit complicated, because the semicolon might 709 * be in a for stmt 710 */ 711 diag(1, "Unbalanced parens"); 712 ps.p_l_follow = 0; 713 if (sp_sw) { /* this is a check for a if, while, etc. with 714 * unbalanced parens */ 715 sp_sw = false; 716 parse(hd_type); /* dont lose the if, or whatever */ 717 } 718 } 719 *e_code++ = ';'; 720 ps.want_blank = true; 721 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the 722 * middle of a stmt */ 723 724 if (!sp_sw) { /* if not if for (;;) */ 725 parse(semicolon); /* let parser know about end of stmt */ 726 force_nl = true;/* force newline after a end of stmt */ 727 } 728 break; 729 730 case lbrace: /* got a '{' */ 731 ps.in_stmt = false; /* dont indent the {} */ 732 if (!ps.block_init) 733 force_nl = true;/* force other stuff on same line as '{' onto 734 * new line */ 735 else if (ps.block_init_level <= 0) 736 ps.block_init_level = 1; 737 else 738 ps.block_init_level++; 739 740 if (s_code != e_code && !ps.block_init) { 741 if (!btype_2) { 742 dump_line(); 743 ps.want_blank = false; 744 } 745 else if (ps.in_parameter_declaration && !ps.in_or_st) { 746 ps.i_l_follow = 0; 747 dump_line(); 748 ps.want_blank = false; 749 } 750 } 751 if (ps.in_parameter_declaration) 752 prefix_blankline_requested = 0; 753 754 if (ps.p_l_follow > 0) { /* check for preceeding unbalanced 755 * parens */ 756 diag(1, "Unbalanced parens"); 757 ps.p_l_follow = 0; 758 if (sp_sw) { /* check for unclosed if, for, etc. */ 759 sp_sw = false; 760 parse(hd_type); 761 ps.ind_level = ps.i_l_follow; 762 } 763 } 764 if (s_code == e_code) 765 ps.ind_stmt = false; /* dont put extra indentation on line 766 * with '{' */ 767 if (ps.in_decl && ps.in_or_st) { /* this is either a structure 768 * declaration or an init */ 769 di_stack[ps.dec_nest++] = dec_ind; 770 /* ? dec_ind = 0; */ 771 } 772 else { 773 ps.decl_on_line = false; /* we cant be in the middle of 774 * a declaration, so dont do 775 * special indentation of 776 * comments */ 777 if (blanklines_after_declarations_at_proctop 778 && ps.in_parameter_declaration) 779 postfix_blankline_requested = 1; 780 ps.in_parameter_declaration = 0; 781 } 782 dec_ind = 0; 783 parse(lbrace); /* let parser know about this */ 784 if (ps.want_blank) /* put a blank before '{' if '{' is not at 785 * start of line */ 786 *e_code++ = ' '; 787 ps.want_blank = false; 788 *e_code++ = '{'; 789 ps.just_saw_decl = 0; 790 break; 791 792 case rbrace: /* got a '}' */ 793 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be 794 * omitted in 795 * declarations */ 796 parse(semicolon); 797 if (ps.p_l_follow) {/* check for unclosed if, for, else. */ 798 diag(1, "Unbalanced parens"); 799 ps.p_l_follow = 0; 800 sp_sw = false; 801 } 802 ps.just_saw_decl = 0; 803 ps.block_init_level--; 804 if (s_code != e_code && !ps.block_init) { /* '}' must be first on 805 * line */ 806 if (verbose) 807 diag(0, "Line broken"); 808 dump_line(); 809 } 810 *e_code++ = '}'; 811 ps.want_blank = true; 812 ps.in_stmt = ps.ind_stmt = false; 813 if (ps.dec_nest > 0) { /* we are in multi-level structure 814 * declaration */ 815 dec_ind = di_stack[--ps.dec_nest]; 816 if (ps.dec_nest == 0 && !ps.in_parameter_declaration) 817 ps.just_saw_decl = 2; 818 ps.in_decl = true; 819 } 820 prefix_blankline_requested = 0; 821 parse(rbrace); /* let parser know about this */ 822 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead 823 && ps.il[ps.tos] >= ps.ind_level; 824 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0) 825 postfix_blankline_requested = 1; 826 break; 827 828 case swstmt: /* got keyword "switch" */ 829 sp_sw = true; 830 hd_type = swstmt; /* keep this for when we have seen the 831 * expression */ 832 goto copy_id; /* go move the token into buffer */ 833 834 case sp_paren: /* token is if, while, for */ 835 sp_sw = true; /* the interesting stuff is done after the 836 * expression is scanned */ 837 hd_type = (*token == 'i' ? ifstmt : 838 (*token == 'w' ? whilestmt : forstmt)); 839 840 /* 841 * remember the type of header for later use by parser 842 */ 843 goto copy_id; /* copy the token into line */ 844 845 case sp_nparen: /* got else, do */ 846 ps.in_stmt = false; 847 if (*token == 'e') { 848 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) { 849 if (verbose) 850 diag(0, "Line broken"); 851 dump_line();/* make sure this starts a line */ 852 ps.want_blank = false; 853 } 854 force_nl = true;/* also, following stuff must go onto new line */ 855 last_else = 1; 856 parse(elselit); 857 } 858 else { 859 if (e_code != s_code) { /* make sure this starts a line */ 860 if (verbose) 861 diag(0, "Line broken"); 862 dump_line(); 863 ps.want_blank = false; 864 } 865 force_nl = true;/* also, following stuff must go onto new line */ 866 last_else = 0; 867 parse(dolit); 868 } 869 goto copy_id; /* move the token into line */ 870 871 case decl: /* we have a declaration type (int, register, 872 * etc.) */ 873 parse(decl); /* let parser worry about indentation */ 874 if (ps.last_token == rparen && ps.tos <= 1) { 875 ps.in_parameter_declaration = 1; 876 if (s_code != e_code) { 877 dump_line(); 878 ps.want_blank = 0; 879 } 880 } 881 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) { 882 ps.ind_level = ps.i_l_follow = 1; 883 ps.ind_stmt = 0; 884 } 885 ps.in_or_st = true; /* this might be a structure or initialization 886 * declaration */ 887 ps.in_decl = ps.decl_on_line = true; 888 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) 889 ps.just_saw_decl = 2; 890 prefix_blankline_requested = 0; 891 for (i = 0; token[i++];); /* get length of token */ 892 893 /* 894 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent 895 * : i); 896 */ 897 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i; 898 goto copy_id; 899 900 case ident: /* got an identifier or constant */ 901 if (ps.in_decl) { /* if we are in a declaration, we must indent 902 * identifier */ 903 if (ps.want_blank) 904 *e_code++ = ' '; 905 ps.want_blank = false; 906 if (is_procname == 0 || !procnames_start_line) { 907 if (!ps.block_init) 908 if (troff && !ps.dumped_decl_indent) { 909 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7); 910 ps.dumped_decl_indent = 1; 911 e_code += strlen(e_code); 912 } 913 else 914 while ((e_code - s_code) < dec_ind) { 915 CHECK_SIZE_CODE; 916 *e_code++ = ' '; 917 } 918 } 919 else { 920 if (dec_ind && s_code != e_code) 921 dump_line(); 922 dec_ind = 0; 923 ps.want_blank = false; 924 } 925 } 926 else if (sp_sw && ps.p_l_follow == 0) { 927 sp_sw = false; 928 force_nl = true; 929 ps.last_u_d = true; 930 ps.in_stmt = false; 931 parse(hd_type); 932 } 933 copy_id: 934 if (ps.want_blank) 935 *e_code++ = ' '; 936 if (troff && ps.its_a_keyword) { 937 e_code = chfont(&bodyf, &keywordf, e_code); 938 for (t_ptr = token; *t_ptr; ++t_ptr) { 939 CHECK_SIZE_CODE; 940 *e_code++ = keywordf.allcaps && islower(*t_ptr) 941 ? toupper(*t_ptr) : *t_ptr; 942 } 943 e_code = chfont(&keywordf, &bodyf, e_code); 944 } 945 else 946 for (t_ptr = token; *t_ptr; ++t_ptr) { 947 CHECK_SIZE_CODE; 948 *e_code++ = *t_ptr; 949 } 950 ps.want_blank = true; 951 break; 952 953 case period: /* treat a period kind of like a binary 954 * operation */ 955 *e_code++ = '.'; /* move the period into line */ 956 ps.want_blank = false; /* dont put a blank after a period */ 957 break; 958 959 case comma: 960 ps.want_blank = (s_code != e_code); /* only put blank after comma 961 * if comma does not start the 962 * line */ 963 if (ps.in_decl && is_procname == 0 && !ps.block_init) 964 while ((e_code - s_code) < (dec_ind - 1)) { 965 CHECK_SIZE_CODE; 966 *e_code++ = ' '; 967 } 968 969 *e_code++ = ','; 970 if (ps.p_l_follow == 0) { 971 if (ps.block_init_level <= 0) 972 ps.block_init = 0; 973 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8)) 974 force_nl = true; 975 } 976 break; 977 978 case preesc: /* got the character '#' */ 979 if ((s_com != e_com) || 980 (s_lab != e_lab) || 981 (s_code != e_code)) 982 dump_line(); 983 *e_lab++ = '#'; /* move whole line to 'label' buffer */ 984 { 985 int in_comment = 0; 986 int com_start = 0; 987 char quote = 0; 988 int com_end = 0; 989 990 while (*buf_ptr == ' ' || *buf_ptr == '\t') { 991 buf_ptr++; 992 if (buf_ptr >= buf_end) 993 fill_buffer(); 994 } 995 while (*buf_ptr != '\n' || in_comment) { 996 CHECK_SIZE_LAB; 997 *e_lab = *buf_ptr++; 998 if (buf_ptr >= buf_end) 999 fill_buffer(); 1000 switch (*e_lab++) { 1001 case BACKSLASH: 1002 if (troff) 1003 *e_lab++ = BACKSLASH; 1004 if (!in_comment) { 1005 *e_lab++ = *buf_ptr++; 1006 if (buf_ptr >= buf_end) 1007 fill_buffer(); 1008 } 1009 break; 1010 case '/': 1011 if (*buf_ptr == '*' && !in_comment && !quote) { 1012 in_comment = 1; 1013 *e_lab++ = *buf_ptr++; 1014 com_start = e_lab - s_lab - 2; 1015 } 1016 break; 1017 case '"': 1018 if (quote == '"') 1019 quote = 0; 1020 break; 1021 case '\'': 1022 if (quote == '\'') 1023 quote = 0; 1024 break; 1025 case '*': 1026 if (*buf_ptr == '/' && in_comment) { 1027 in_comment = 0; 1028 *e_lab++ = *buf_ptr++; 1029 com_end = e_lab - s_lab; 1030 } 1031 break; 1032 } 1033 } 1034 1035 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1036 e_lab--; 1037 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on 1038 * preprocessor line */ 1039 if (sc_end == 0) /* if this is the first comment, we 1040 * must set up the buffer */ 1041 sc_end = &(save_com[0]); 1042 else { 1043 *sc_end++ = '\n'; /* add newline between 1044 * comments */ 1045 *sc_end++ = ' '; 1046 --line_no; 1047 } 1048 bcopy(s_lab + com_start, sc_end, com_end - com_start); 1049 sc_end += com_end - com_start; 1050 if (sc_end >= &save_com[sc_size]) 1051 abort(); 1052 e_lab = s_lab + com_start; 1053 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1054 e_lab--; 1055 bp_save = buf_ptr; /* save current input buffer */ 1056 be_save = buf_end; 1057 buf_ptr = save_com; /* fix so that subsequent calls to 1058 * lexi will take tokens out of 1059 * save_com */ 1060 *sc_end++ = ' '; /* add trailing blank, just in case */ 1061 buf_end = sc_end; 1062 sc_end = 0; 1063 } 1064 *e_lab = '\0'; /* null terminate line */ 1065 ps.pcase = false; 1066 } 1067 1068 if (strncmp(s_lab, "#if", 3) == 0) { 1069 if (blanklines_around_conditional_compilation) { 1070 register c; 1071 prefix_blankline_requested++; 1072 while ((c = getc(input)) == '\n'); 1073 ungetc(c, input); 1074 } 1075 if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) { 1076 match_state[ifdef_level].tos = -1; 1077 state_stack[ifdef_level++] = ps; 1078 } 1079 else 1080 diag(1, "#if stack overflow"); 1081 } 1082 else if (strncmp(s_lab, "#else", 5) == 0) 1083 if (ifdef_level <= 0) 1084 diag(1, "Unmatched #else"); 1085 else { 1086 match_state[ifdef_level - 1] = ps; 1087 ps = state_stack[ifdef_level - 1]; 1088 } 1089 else if (strncmp(s_lab, "#endif", 6) == 0) { 1090 if (ifdef_level <= 0) 1091 diag(1, "Unmatched #endif"); 1092 else { 1093 ifdef_level--; 1094 1095 #ifdef undef 1096 /* 1097 * This match needs to be more intelligent before the 1098 * message is useful 1099 */ 1100 if (match_state[ifdef_level].tos >= 0 1101 && bcmp(&ps, &match_state[ifdef_level], sizeof ps)) 1102 diag(0, "Syntactically inconsistant #ifdef alternatives."); 1103 #endif 1104 } 1105 if (blanklines_around_conditional_compilation) { 1106 postfix_blankline_requested++; 1107 n_real_blanklines = 0; 1108 } 1109 } 1110 break; /* subsequent processing of the newline 1111 * character will cause the line to be printed */ 1112 1113 case comment: /* we have gotten a /* this is a biggie */ 1114 if (flushed_nl) { /* we should force a broken line here */ 1115 flushed_nl = false; 1116 dump_line(); 1117 ps.want_blank = false; /* dont insert blank at line start */ 1118 force_nl = false; 1119 } 1120 pr_comment(); 1121 break; 1122 } /* end of big switch stmt */ 1123 1124 *e_code = '\0'; /* make sure code section is null terminated */ 1125 if (type_code != comment && type_code != newline && type_code != preesc) 1126 ps.last_token = type_code; 1127 } /* end of main while (1) loop */ 1128 } 1129 1130 /* 1131 * copy input file to backup file if in_name is /blah/blah/blah/file, then 1132 * backup file will be ".Bfile" then make the backup file the input and 1133 * original input file the output 1134 */ 1135 bakcopy() 1136 { 1137 int n, 1138 bakchn; 1139 char buff[8 * 1024]; 1140 register char *p; 1141 1142 /* construct file name .Bfile */ 1143 for (p = in_name; *p; p++); /* skip to end of string */ 1144 while (p > in_name && *p != '/') /* find last '/' */ 1145 p--; 1146 if (*p == '/') 1147 p++; 1148 sprintf(bakfile, "%s.BAK", p); 1149 1150 /* copy in_name to backup file */ 1151 bakchn = creat(bakfile, 0600); 1152 if (bakchn < 0) 1153 err(bakfile); 1154 while (n = read(fileno(input), buff, sizeof buff)) 1155 if (write(bakchn, buff, n) != n) 1156 err(bakfile); 1157 if (n < 0) 1158 err(in_name); 1159 close(bakchn); 1160 fclose(input); 1161 1162 /* re-open backup file as the input file */ 1163 input = fopen(bakfile, "r"); 1164 if (input == 0) 1165 err(bakfile); 1166 /* now the original input file will be the output */ 1167 output = fopen(in_name, "w"); 1168 if (output == 0) { 1169 unlink(bakfile); 1170 err(in_name); 1171 } 1172 } 1173 1174 err(msg) 1175 char *msg; 1176 { 1177 extern int errno; 1178 char *strerror(); 1179 1180 (void)fprintf(stderr, "indent: %s: %s\n", msg, strerror(errno)); 1181 exit(1); 1182 } 1183