1 /* 2 * Copyright (c) 1985 Sun Microsystems, Inc. 3 * Copyright (c) 1976 Board of Trustees of the University of Illinois. 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. 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) 1976 Board of Trustees of the University of Illinois.\n\ 40 @(#) Copyright (c) 1980, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif /* not lint */ 43 44 #ifndef lint 45 static char sccsid[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <fcntl.h> 50 #include <unistd.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include "indent_globs.h" 55 #include "indent_codes.h" 56 #include <ctype.h> 57 58 char *in_name = "Standard Input"; /* will always point to name of input 59 * file */ 60 char *out_name = "Standard Output"; /* will always point to name 61 * of output file */ 62 char bakfile[MAXPATHLEN] = ""; 63 64 main(argc, argv) 65 int argc; 66 char **argv; 67 { 68 69 extern int found_err; /* flag set in diag() on error */ 70 int dec_ind; /* current indentation for declarations */ 71 int di_stack[20]; /* a stack of structure indentation levels */ 72 int flushed_nl; /* used when buffering up comments to remember 73 * that a newline was passed over */ 74 int force_nl; /* when true, code must be broken */ 75 int hd_type; /* used to store type of stmt for if (...), 76 * for (...), etc */ 77 register int i; /* local loop counter */ 78 int scase; /* set to true when we see a case, so we will 79 * know what to do with the following colon */ 80 int sp_sw; /* when true, we are in the expressin of 81 * if(...), while(...), etc. */ 82 int squest; /* when this is positive, we have seen a ? 83 * without the matching : in a <c>?<s>:<s> 84 * construct */ 85 register char *t_ptr; /* used for copying tokens */ 86 int type_code; /* the type of token, returned by lexi */ 87 88 int last_else = 0; /* true iff last keyword was an else */ 89 90 91 /*-----------------------------------------------*\ 92 | INITIALIZATION | 93 \*-----------------------------------------------*/ 94 95 96 ps.p_stack[0] = stmt; /* this is the parser's stack */ 97 ps.last_nl = true; /* this is true if the last thing scanned was 98 * a newline */ 99 ps.last_token = semicolon; 100 combuf = (char *) malloc(bufsize); 101 labbuf = (char *) malloc(bufsize); 102 codebuf = (char *) malloc(bufsize); 103 tokenbuf = (char *) malloc(bufsize); 104 l_com = combuf + bufsize - 5; 105 l_lab = labbuf + bufsize - 5; 106 l_code = codebuf + bufsize - 5; 107 l_token = tokenbuf + bufsize - 5; 108 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and 109 * comment buffers */ 110 combuf[1] = codebuf[1] = labbuf[1] = '\0'; 111 ps.else_if = 1; /* Default else-if special processing to on */ 112 s_lab = e_lab = labbuf + 1; 113 s_code = e_code = codebuf + 1; 114 s_com = e_com = combuf + 1; 115 s_token = e_token = tokenbuf + 1; 116 117 in_buffer = (char *) malloc(10); 118 in_buffer_limit = in_buffer + 8; 119 buf_ptr = buf_end = in_buffer; 120 line_no = 1; 121 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false; 122 sp_sw = force_nl = false; 123 ps.in_or_st = false; 124 ps.bl_line = true; 125 dec_ind = 0; 126 di_stack[ps.dec_nest = 0] = 0; 127 ps.want_blank = ps.in_stmt = ps.ind_stmt = false; 128 129 130 scase = ps.pcase = false; 131 squest = 0; 132 sc_end = 0; 133 bp_save = 0; 134 be_save = 0; 135 136 output = 0; 137 138 139 140 /*--------------------------------------------------*\ 141 | COMMAND LINE SCAN | 142 \*--------------------------------------------------*/ 143 144 #ifdef undef 145 max_col = 78; /* -l78 */ 146 lineup_to_parens = 1; /* -lp */ 147 ps.ljust_decl = 0; /* -ndj */ 148 ps.com_ind = 33; /* -c33 */ 149 star_comment_cont = 1; /* -sc */ 150 ps.ind_size = 8; /* -i8 */ 151 verbose = 0; 152 ps.decl_indent = 16; /* -di16 */ 153 ps.indent_parameters = 1; /* -ip */ 154 ps.decl_com_ind = 0; /* if this is not set to some positive value 155 * by an arg, we will set this equal to 156 * ps.com_ind */ 157 btype_2 = 1; /* -br */ 158 cuddle_else = 1; /* -ce */ 159 ps.unindent_displace = 0; /* -d0 */ 160 ps.case_indent = 0; /* -cli0 */ 161 format_col1_comments = 1; /* -fc1 */ 162 procnames_start_line = 1; /* -psl */ 163 proc_calls_space = 0; /* -npcs */ 164 comment_delimiter_on_blankline = 1; /* -cdb */ 165 ps.leave_comma = 1; /* -nbc */ 166 #endif 167 168 for (i = 1; i < argc; ++i) 169 if (strcmp(argv[i], "-npro") == 0) 170 break; 171 set_defaults(); 172 if (i >= argc) 173 set_profile(); 174 175 for (i = 1; i < argc; ++i) { 176 177 /* 178 * look thru args (if any) for changes to defaults 179 */ 180 if (argv[i][0] != '-') {/* no flag on parameter */ 181 if (input == 0) { /* we must have the input file */ 182 in_name = argv[i]; /* remember name of input file */ 183 input = fopen(in_name, "r"); 184 if (input == 0) /* check for open error */ 185 err(in_name); 186 continue; 187 } 188 else if (output == 0) { /* we have the output file */ 189 out_name = argv[i]; /* remember name of output file */ 190 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite 191 * the file */ 192 fprintf(stderr, "indent: input and output files must be different\n"); 193 exit(1); 194 } 195 output = fopen(out_name, "w"); 196 if (output == 0) /* check for create error */ 197 err(out_name); 198 continue; 199 } 200 fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]); 201 exit(1); 202 } 203 else 204 set_option(argv[i]); 205 } /* end of for */ 206 if (input == 0) { 207 fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n"); 208 exit(1); 209 } 210 if (output == 0) 211 if (troff) 212 output = stdout; 213 else { 214 out_name = in_name; 215 bakcopy(); 216 } 217 if (ps.com_ind <= 1) 218 ps.com_ind = 2; /* dont put normal comments before column 2 */ 219 if (troff) { 220 if (bodyf.font[0] == 0) 221 parsefont(&bodyf, "R"); 222 if (scomf.font[0] == 0) 223 parsefont(&scomf, "I"); 224 if (blkcomf.font[0] == 0) 225 blkcomf = scomf, blkcomf.size += 2; 226 if (boxcomf.font[0] == 0) 227 boxcomf = blkcomf; 228 if (stringf.font[0] == 0) 229 parsefont(&stringf, "L"); 230 if (keywordf.font[0] == 0) 231 parsefont(&keywordf, "B"); 232 writefdef(&bodyf, 'B'); 233 writefdef(&scomf, 'C'); 234 writefdef(&blkcomf, 'L'); 235 writefdef(&boxcomf, 'X'); 236 writefdef(&stringf, 'S'); 237 writefdef(&keywordf, 'K'); 238 } 239 if (block_comment_max_col <= 0) 240 block_comment_max_col = max_col; 241 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */ 242 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind; 243 if (continuation_indent == 0) 244 continuation_indent = ps.ind_size; 245 fill_buffer(); /* get first batch of stuff into input buffer */ 246 247 parse(semicolon); 248 { 249 register char *p = buf_ptr; 250 register col = 1; 251 252 while (1) { 253 if (*p == ' ') 254 col++; 255 else if (*p == '\t') 256 col = ((col - 1) & ~7) + 9; 257 else 258 break; 259 p++; 260 } 261 if (col > ps.ind_size) 262 ps.ind_level = ps.i_l_follow = col / ps.ind_size; 263 } 264 if (troff) { 265 register char *p = in_name, 266 *beg = in_name; 267 268 while (*p) 269 if (*p++ == '/') 270 beg = p; 271 fprintf(output, ".Fn \"%s\"\n", beg); 272 } 273 /* 274 * START OF MAIN LOOP 275 */ 276 277 while (1) { /* this is the main loop. it will go until we 278 * reach eof */ 279 int is_procname; 280 281 type_code = lexi(); /* lexi reads one token. The actual 282 * characters read are stored in "token". lexi 283 * returns a code indicating the type of token */ 284 is_procname = ps.procname[0]; 285 286 /* 287 * The following code moves everything following an if (), while (), 288 * else, etc. up to the start of the following stmt to a buffer. This 289 * allows proper handling of both kinds of brace placement. 290 */ 291 292 flushed_nl = false; 293 while (ps.search_brace) { /* if we scanned an if(), while(), 294 * etc., we might need to copy stuff 295 * into a buffer we must loop, copying 296 * stuff into save_com, until we find 297 * the start of the stmt which follows 298 * the if, or whatever */ 299 switch (type_code) { 300 case newline: 301 ++line_no; 302 flushed_nl = true; 303 case form_feed: 304 break; /* form feeds and newlines found here will be 305 * ignored */ 306 307 case lbrace: /* this is a brace that starts the compound 308 * stmt */ 309 if (sc_end == 0) { /* ignore buffering if a comment wasnt 310 * stored up */ 311 ps.search_brace = false; 312 goto check_type; 313 } 314 if (btype_2) { 315 save_com[0] = '{'; /* we either want to put the brace 316 * right after the if */ 317 goto sw_buffer; /* go to common code to get out of 318 * this loop */ 319 } 320 case comment: /* we have a comment, so we must copy it into 321 * the buffer */ 322 if (!flushed_nl || sc_end != 0) { 323 if (sc_end == 0) { /* if this is the first comment, we 324 * must set up the buffer */ 325 save_com[0] = save_com[1] = ' '; 326 sc_end = &(save_com[2]); 327 } 328 else { 329 *sc_end++ = '\n'; /* add newline between 330 * comments */ 331 *sc_end++ = ' '; 332 --line_no; 333 } 334 *sc_end++ = '/'; /* copy in start of comment */ 335 *sc_end++ = '*'; 336 337 for (;;) { /* loop until we get to the end of the comment */ 338 *sc_end = *buf_ptr++; 339 if (buf_ptr >= buf_end) 340 fill_buffer(); 341 342 if (*sc_end++ == '*' && *buf_ptr == '/') 343 break; /* we are at end of comment */ 344 345 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer 346 * overflow */ 347 diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever."); 348 fflush(output); 349 exit(1); 350 } 351 } 352 *sc_end++ = '/'; /* add ending slash */ 353 if (++buf_ptr >= buf_end) /* get past / in buffer */ 354 fill_buffer(); 355 break; 356 } 357 default: /* it is the start of a normal statment */ 358 if (flushed_nl) /* if we flushed a newline, make sure it is 359 * put back */ 360 force_nl = true; 361 if (type_code == sp_paren && *token == 'i' 362 && last_else && ps.else_if 363 || type_code == sp_nparen && *token == 'e' 364 && e_code != s_code && e_code[-1] == '}') 365 force_nl = false; 366 367 if (sc_end == 0) { /* ignore buffering if comment wasnt 368 * saved up */ 369 ps.search_brace = false; 370 goto check_type; 371 } 372 if (force_nl) { /* if we should insert a nl here, put it into 373 * the buffer */ 374 force_nl = false; 375 --line_no; /* this will be re-increased when the nl is 376 * read from the buffer */ 377 *sc_end++ = '\n'; 378 *sc_end++ = ' '; 379 if (verbose && !flushed_nl) /* print error msg if the line 380 * was not already broken */ 381 diag(0, "Line broken"); 382 flushed_nl = false; 383 } 384 for (t_ptr = token; *t_ptr; ++t_ptr) 385 *sc_end++ = *t_ptr; /* copy token into temp buffer */ 386 ps.procname[0] = 0; 387 388 sw_buffer: 389 ps.search_brace = false; /* stop looking for start of 390 * stmt */ 391 bp_save = buf_ptr; /* save current input buffer */ 392 be_save = buf_end; 393 buf_ptr = save_com; /* fix so that subsequent calls to 394 * lexi will take tokens out of 395 * save_com */ 396 *sc_end++ = ' ';/* add trailing blank, just in case */ 397 buf_end = sc_end; 398 sc_end = 0; 399 break; 400 } /* end of switch */ 401 if (type_code != 0) /* we must make this check, just in case there 402 * was an unexpected EOF */ 403 type_code = lexi(); /* read another token */ 404 /* if (ps.search_brace) ps.procname[0] = 0; */ 405 if ((is_procname = ps.procname[0]) && flushed_nl 406 && !procnames_start_line && ps.in_decl 407 && type_code == ident) 408 flushed_nl = 0; 409 } /* end of while (search_brace) */ 410 last_else = 0; 411 check_type: 412 if (type_code == 0) { /* we got eof */ 413 if (s_lab != e_lab || s_code != e_code 414 || s_com != e_com) /* must dump end of line */ 415 dump_line(); 416 if (ps.tos > 1) /* check for balanced braces */ 417 diag(1, "Stuff missing from end of file."); 418 419 if (verbose) { 420 printf("There were %d output lines and %d comments\n", 421 ps.out_lines, ps.out_coms); 422 printf("(Lines with comments)/(Lines with code): %6.3f\n", 423 (1.0 * ps.com_lines) / code_lines); 424 } 425 fflush(output); 426 exit(found_err); 427 } 428 if ( 429 (type_code != comment) && 430 (type_code != newline) && 431 (type_code != preesc) && 432 (type_code != form_feed)) { 433 if (force_nl && 434 (type_code != semicolon) && 435 (type_code != lbrace || !btype_2)) { 436 /* we should force a broken line here */ 437 if (verbose && !flushed_nl) 438 diag(0, "Line broken"); 439 flushed_nl = false; 440 dump_line(); 441 ps.want_blank = false; /* dont insert blank at line start */ 442 force_nl = false; 443 } 444 ps.in_stmt = true; /* turn on flag which causes an extra level of 445 * indentation. this is turned off by a ; or 446 * '}' */ 447 if (s_com != e_com) { /* the turkey has embedded a comment 448 * in a line. fix it */ 449 *e_code++ = ' '; 450 for (t_ptr = s_com; *t_ptr; ++t_ptr) { 451 CHECK_SIZE_CODE; 452 *e_code++ = *t_ptr; 453 } 454 *e_code++ = ' '; 455 *e_code = '\0'; /* null terminate code sect */ 456 ps.want_blank = false; 457 e_com = s_com; 458 } 459 } 460 else if (type_code != comment) /* preserve force_nl thru a comment */ 461 force_nl = false; /* cancel forced newline after newline, form 462 * feed, etc */ 463 464 465 466 /*-----------------------------------------------------*\ 467 | do switch on type of token scanned | 468 \*-----------------------------------------------------*/ 469 CHECK_SIZE_CODE; 470 switch (type_code) { /* now, decide what to do with the token */ 471 472 case form_feed: /* found a form feed in line */ 473 ps.use_ff = true; /* a form feed is treated much like a newline */ 474 dump_line(); 475 ps.want_blank = false; 476 break; 477 478 case newline: 479 if (ps.last_token != comma || ps.p_l_follow > 0 480 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) { 481 dump_line(); 482 ps.want_blank = false; 483 } 484 ++line_no; /* keep track of input line number */ 485 break; 486 487 case lparen: /* got a '(' or '[' */ 488 ++ps.p_l_follow; /* count parens to make Healy happy */ 489 if (ps.want_blank && *token != '[' && 490 (ps.last_token != ident || proc_calls_space 491 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon)))) 492 *e_code++ = ' '; 493 if (ps.in_decl && !ps.block_init) 494 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) { 495 ps.dumped_decl_indent = 1; 496 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 497 e_code += strlen(e_code); 498 } 499 else { 500 while ((e_code - s_code) < dec_ind) { 501 CHECK_SIZE_CODE; 502 *e_code++ = ' '; 503 } 504 *e_code++ = token[0]; 505 } 506 else 507 *e_code++ = token[0]; 508 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code; 509 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent 510 && ps.paren_indents[0] < 2 * ps.ind_size) 511 ps.paren_indents[0] = 2 * ps.ind_size; 512 ps.want_blank = false; 513 if (ps.in_or_st && *token == '(' && ps.tos <= 2) { 514 /* 515 * this is a kluge to make sure that declarations will be 516 * aligned right if proc decl has an explicit type on it, i.e. 517 * "int a(x) {..." 518 */ 519 parse(semicolon); /* I said this was a kluge... */ 520 ps.in_or_st = false; /* turn off flag for structure decl or 521 * initialization */ 522 } 523 if (ps.sizeof_keyword) 524 ps.sizeof_mask |= 1 << ps.p_l_follow; 525 break; 526 527 case rparen: /* got a ')' or ']' */ 528 rparen_count--; 529 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) { 530 ps.last_u_d = true; 531 ps.cast_mask &= (1 << ps.p_l_follow) - 1; 532 } 533 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1; 534 if (--ps.p_l_follow < 0) { 535 ps.p_l_follow = 0; 536 diag(0, "Extra %c", *token); 537 } 538 if (e_code == s_code) /* if the paren starts the line */ 539 ps.paren_level = ps.p_l_follow; /* then indent it */ 540 541 *e_code++ = token[0]; 542 ps.want_blank = true; 543 544 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if 545 * (...), or some such */ 546 sp_sw = false; 547 force_nl = true;/* must force newline after if */ 548 ps.last_u_d = true; /* inform lexi that a following 549 * operator is unary */ 550 ps.in_stmt = false; /* dont use stmt continuation 551 * indentation */ 552 553 parse(hd_type); /* let parser worry about if, or whatever */ 554 } 555 ps.search_brace = btype_2; /* this should insure that constructs 556 * such as main(){...} and int[]{...} 557 * have their braces put in the right 558 * place */ 559 break; 560 561 case unary_op: /* this could be any unary operation */ 562 if (ps.want_blank) 563 *e_code++ = ' '; 564 565 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) { 566 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 567 ps.dumped_decl_indent = 1; 568 e_code += strlen(e_code); 569 } 570 else { 571 char *res = token; 572 573 if (ps.in_decl && !ps.block_init) { /* if this is a unary op 574 * in a declaration, we 575 * should indent this 576 * token */ 577 for (i = 0; token[i]; ++i); /* find length of token */ 578 while ((e_code - s_code) < (dec_ind - i)) { 579 CHECK_SIZE_CODE; 580 *e_code++ = ' '; /* pad it */ 581 } 582 } 583 if (troff && token[0] == '-' && token[1] == '>') 584 res = "\\(->"; 585 for (t_ptr = res; *t_ptr; ++t_ptr) { 586 CHECK_SIZE_CODE; 587 *e_code++ = *t_ptr; 588 } 589 } 590 ps.want_blank = false; 591 break; 592 593 case binary_op: /* any binary operation */ 594 if (ps.want_blank) 595 *e_code++ = ' '; 596 { 597 char *res = token; 598 599 if (troff) 600 switch (token[0]) { 601 case '<': 602 if (token[1] == '=') 603 res = "\\(<="; 604 break; 605 case '>': 606 if (token[1] == '=') 607 res = "\\(>="; 608 break; 609 case '!': 610 if (token[1] == '=') 611 res = "\\(!="; 612 break; 613 case '|': 614 if (token[1] == '|') 615 res = "\\(br\\(br"; 616 else if (token[1] == 0) 617 res = "\\(br"; 618 break; 619 } 620 for (t_ptr = res; *t_ptr; ++t_ptr) { 621 CHECK_SIZE_CODE; 622 *e_code++ = *t_ptr; /* move the operator */ 623 } 624 } 625 ps.want_blank = true; 626 break; 627 628 case postop: /* got a trailing ++ or -- */ 629 *e_code++ = token[0]; 630 *e_code++ = token[1]; 631 ps.want_blank = true; 632 break; 633 634 case question: /* got a ? */ 635 squest++; /* this will be used when a later colon 636 * appears so we can distinguish the 637 * <c>?<n>:<n> construct */ 638 if (ps.want_blank) 639 *e_code++ = ' '; 640 *e_code++ = '?'; 641 ps.want_blank = true; 642 break; 643 644 case casestmt: /* got word 'case' or 'default' */ 645 scase = true; /* so we can process the later colon properly */ 646 goto copy_id; 647 648 case colon: /* got a ':' */ 649 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ 650 --squest; 651 if (ps.want_blank) 652 *e_code++ = ' '; 653 *e_code++ = ':'; 654 ps.want_blank = true; 655 break; 656 } 657 if (ps.in_decl) { 658 *e_code++ = ':'; 659 ps.want_blank = false; 660 break; 661 } 662 ps.in_stmt = false; /* seeing a label does not imply we are in a 663 * stmt */ 664 for (t_ptr = s_code; *t_ptr; ++t_ptr) 665 *e_lab++ = *t_ptr; /* turn everything so far into a label */ 666 e_code = s_code; 667 *e_lab++ = ':'; 668 *e_lab++ = ' '; 669 *e_lab = '\0'; 670 671 force_nl = ps.pcase = scase; /* ps.pcase will be used by 672 * dump_line to decide how to 673 * indent the label. force_nl 674 * will force a case n: to be 675 * on a line by itself */ 676 scase = false; 677 ps.want_blank = false; 678 break; 679 680 case semicolon: /* got a ';' */ 681 ps.in_or_st = false;/* we are not in an initialization or 682 * structure declaration */ 683 scase = false; /* these will only need resetting in a error */ 684 squest = 0; 685 if (ps.last_token == rparen && rparen_count == 0) 686 ps.in_parameter_declaration = 0; 687 ps.cast_mask = 0; 688 ps.sizeof_mask = 0; 689 ps.block_init = 0; 690 ps.block_init_level = 0; 691 ps.just_saw_decl--; 692 693 if (ps.in_decl && s_code == e_code && !ps.block_init) 694 while ((e_code - s_code) < (dec_ind - 1)) { 695 CHECK_SIZE_CODE; 696 *e_code++ = ' '; 697 } 698 699 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level 700 * structure declaration, we 701 * arent any more */ 702 703 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) { 704 705 /* 706 * This should be true iff there were unbalanced parens in the 707 * stmt. It is a bit complicated, because the semicolon might 708 * be in a for stmt 709 */ 710 diag(1, "Unbalanced parens"); 711 ps.p_l_follow = 0; 712 if (sp_sw) { /* this is a check for a if, while, etc. with 713 * unbalanced parens */ 714 sp_sw = false; 715 parse(hd_type); /* dont lose the if, or whatever */ 716 } 717 } 718 *e_code++ = ';'; 719 ps.want_blank = true; 720 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the 721 * middle of a stmt */ 722 723 if (!sp_sw) { /* if not if for (;;) */ 724 parse(semicolon); /* let parser know about end of stmt */ 725 force_nl = true;/* force newline after a end of stmt */ 726 } 727 break; 728 729 case lbrace: /* got a '{' */ 730 ps.in_stmt = false; /* dont indent the {} */ 731 if (!ps.block_init) 732 force_nl = true;/* force other stuff on same line as '{' onto 733 * new line */ 734 else if (ps.block_init_level <= 0) 735 ps.block_init_level = 1; 736 else 737 ps.block_init_level++; 738 739 if (s_code != e_code && !ps.block_init) { 740 if (!btype_2) { 741 dump_line(); 742 ps.want_blank = false; 743 } 744 else if (ps.in_parameter_declaration && !ps.in_or_st) { 745 ps.i_l_follow = 0; 746 dump_line(); 747 ps.want_blank = false; 748 } 749 } 750 if (ps.in_parameter_declaration) 751 prefix_blankline_requested = 0; 752 753 if (ps.p_l_follow > 0) { /* check for preceeding unbalanced 754 * parens */ 755 diag(1, "Unbalanced parens"); 756 ps.p_l_follow = 0; 757 if (sp_sw) { /* check for unclosed if, for, etc. */ 758 sp_sw = false; 759 parse(hd_type); 760 ps.ind_level = ps.i_l_follow; 761 } 762 } 763 if (s_code == e_code) 764 ps.ind_stmt = false; /* dont put extra indentation on line 765 * with '{' */ 766 if (ps.in_decl && ps.in_or_st) { /* this is either a structure 767 * declaration or an init */ 768 di_stack[ps.dec_nest++] = dec_ind; 769 /* ? dec_ind = 0; */ 770 } 771 else { 772 ps.decl_on_line = false; /* we cant be in the middle of 773 * a declaration, so dont do 774 * special indentation of 775 * comments */ 776 if (blanklines_after_declarations_at_proctop 777 && ps.in_parameter_declaration) 778 postfix_blankline_requested = 1; 779 ps.in_parameter_declaration = 0; 780 } 781 dec_ind = 0; 782 parse(lbrace); /* let parser know about this */ 783 if (ps.want_blank) /* put a blank before '{' if '{' is not at 784 * start of line */ 785 *e_code++ = ' '; 786 ps.want_blank = false; 787 *e_code++ = '{'; 788 ps.just_saw_decl = 0; 789 break; 790 791 case rbrace: /* got a '}' */ 792 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be 793 * omitted in 794 * declarations */ 795 parse(semicolon); 796 if (ps.p_l_follow) {/* check for unclosed if, for, else. */ 797 diag(1, "Unbalanced parens"); 798 ps.p_l_follow = 0; 799 sp_sw = false; 800 } 801 ps.just_saw_decl = 0; 802 ps.block_init_level--; 803 if (s_code != e_code && !ps.block_init) { /* '}' must be first on 804 * line */ 805 if (verbose) 806 diag(0, "Line broken"); 807 dump_line(); 808 } 809 *e_code++ = '}'; 810 ps.want_blank = true; 811 ps.in_stmt = ps.ind_stmt = false; 812 if (ps.dec_nest > 0) { /* we are in multi-level structure 813 * declaration */ 814 dec_ind = di_stack[--ps.dec_nest]; 815 if (ps.dec_nest == 0 && !ps.in_parameter_declaration) 816 ps.just_saw_decl = 2; 817 ps.in_decl = true; 818 } 819 prefix_blankline_requested = 0; 820 parse(rbrace); /* let parser know about this */ 821 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead 822 && ps.il[ps.tos] >= ps.ind_level; 823 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0) 824 postfix_blankline_requested = 1; 825 break; 826 827 case swstmt: /* got keyword "switch" */ 828 sp_sw = true; 829 hd_type = swstmt; /* keep this for when we have seen the 830 * expression */ 831 goto copy_id; /* go move the token into buffer */ 832 833 case sp_paren: /* token is if, while, for */ 834 sp_sw = true; /* the interesting stuff is done after the 835 * expression is scanned */ 836 hd_type = (*token == 'i' ? ifstmt : 837 (*token == 'w' ? whilestmt : forstmt)); 838 839 /* 840 * remember the type of header for later use by parser 841 */ 842 goto copy_id; /* copy the token into line */ 843 844 case sp_nparen: /* got else, do */ 845 ps.in_stmt = false; 846 if (*token == 'e') { 847 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) { 848 if (verbose) 849 diag(0, "Line broken"); 850 dump_line();/* make sure this starts a line */ 851 ps.want_blank = false; 852 } 853 force_nl = true;/* also, following stuff must go onto new line */ 854 last_else = 1; 855 parse(elselit); 856 } 857 else { 858 if (e_code != s_code) { /* make sure this starts a line */ 859 if (verbose) 860 diag(0, "Line broken"); 861 dump_line(); 862 ps.want_blank = false; 863 } 864 force_nl = true;/* also, following stuff must go onto new line */ 865 last_else = 0; 866 parse(dolit); 867 } 868 goto copy_id; /* move the token into line */ 869 870 case decl: /* we have a declaration type (int, register, 871 * etc.) */ 872 parse(decl); /* let parser worry about indentation */ 873 if (ps.last_token == rparen && ps.tos <= 1) { 874 ps.in_parameter_declaration = 1; 875 if (s_code != e_code) { 876 dump_line(); 877 ps.want_blank = 0; 878 } 879 } 880 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) { 881 ps.ind_level = ps.i_l_follow = 1; 882 ps.ind_stmt = 0; 883 } 884 ps.in_or_st = true; /* this might be a structure or initialization 885 * declaration */ 886 ps.in_decl = ps.decl_on_line = true; 887 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) 888 ps.just_saw_decl = 2; 889 prefix_blankline_requested = 0; 890 for (i = 0; token[i++];); /* get length of token */ 891 892 /* 893 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent 894 * : i); 895 */ 896 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i; 897 goto copy_id; 898 899 case ident: /* got an identifier or constant */ 900 if (ps.in_decl) { /* if we are in a declaration, we must indent 901 * identifier */ 902 if (ps.want_blank) 903 *e_code++ = ' '; 904 ps.want_blank = false; 905 if (is_procname == 0 || !procnames_start_line) { 906 if (!ps.block_init) 907 if (troff && !ps.dumped_decl_indent) { 908 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7); 909 ps.dumped_decl_indent = 1; 910 e_code += strlen(e_code); 911 } 912 else 913 while ((e_code - s_code) < dec_ind) { 914 CHECK_SIZE_CODE; 915 *e_code++ = ' '; 916 } 917 } 918 else { 919 if (dec_ind && s_code != e_code) 920 dump_line(); 921 dec_ind = 0; 922 ps.want_blank = false; 923 } 924 } 925 else if (sp_sw && ps.p_l_follow == 0) { 926 sp_sw = false; 927 force_nl = true; 928 ps.last_u_d = true; 929 ps.in_stmt = false; 930 parse(hd_type); 931 } 932 copy_id: 933 if (ps.want_blank) 934 *e_code++ = ' '; 935 if (troff && ps.its_a_keyword) { 936 e_code = chfont(&bodyf, &keywordf, e_code); 937 for (t_ptr = token; *t_ptr; ++t_ptr) { 938 CHECK_SIZE_CODE; 939 *e_code++ = keywordf.allcaps && islower(*t_ptr) 940 ? toupper(*t_ptr) : *t_ptr; 941 } 942 e_code = chfont(&keywordf, &bodyf, e_code); 943 } 944 else 945 for (t_ptr = token; *t_ptr; ++t_ptr) { 946 CHECK_SIZE_CODE; 947 *e_code++ = *t_ptr; 948 } 949 ps.want_blank = true; 950 break; 951 952 case period: /* treat a period kind of like a binary 953 * operation */ 954 *e_code++ = '.'; /* move the period into line */ 955 ps.want_blank = false; /* dont put a blank after a period */ 956 break; 957 958 case comma: 959 ps.want_blank = (s_code != e_code); /* only put blank after comma 960 * if comma does not start the 961 * line */ 962 if (ps.in_decl && is_procname == 0 && !ps.block_init) 963 while ((e_code - s_code) < (dec_ind - 1)) { 964 CHECK_SIZE_CODE; 965 *e_code++ = ' '; 966 } 967 968 *e_code++ = ','; 969 if (ps.p_l_follow == 0) { 970 if (ps.block_init_level <= 0) 971 ps.block_init = 0; 972 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8)) 973 force_nl = true; 974 } 975 break; 976 977 case preesc: /* got the character '#' */ 978 if ((s_com != e_com) || 979 (s_lab != e_lab) || 980 (s_code != e_code)) 981 dump_line(); 982 *e_lab++ = '#'; /* move whole line to 'label' buffer */ 983 { 984 int in_comment = 0; 985 int com_start = 0; 986 char quote = 0; 987 int com_end = 0; 988 989 while (*buf_ptr == ' ' || *buf_ptr == '\t') { 990 buf_ptr++; 991 if (buf_ptr >= buf_end) 992 fill_buffer(); 993 } 994 while (*buf_ptr != '\n' || in_comment) { 995 CHECK_SIZE_LAB; 996 *e_lab = *buf_ptr++; 997 if (buf_ptr >= buf_end) 998 fill_buffer(); 999 switch (*e_lab++) { 1000 case BACKSLASH: 1001 if (troff) 1002 *e_lab++ = BACKSLASH; 1003 if (!in_comment) { 1004 *e_lab++ = *buf_ptr++; 1005 if (buf_ptr >= buf_end) 1006 fill_buffer(); 1007 } 1008 break; 1009 case '/': 1010 if (*buf_ptr == '*' && !in_comment && !quote) { 1011 in_comment = 1; 1012 *e_lab++ = *buf_ptr++; 1013 com_start = e_lab - s_lab - 2; 1014 } 1015 break; 1016 case '"': 1017 if (quote == '"') 1018 quote = 0; 1019 break; 1020 case '\'': 1021 if (quote == '\'') 1022 quote = 0; 1023 break; 1024 case '*': 1025 if (*buf_ptr == '/' && in_comment) { 1026 in_comment = 0; 1027 *e_lab++ = *buf_ptr++; 1028 com_end = e_lab - s_lab; 1029 } 1030 break; 1031 } 1032 } 1033 1034 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1035 e_lab--; 1036 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on 1037 * preprocessor line */ 1038 if (sc_end == 0) /* if this is the first comment, we 1039 * must set up the buffer */ 1040 sc_end = &(save_com[0]); 1041 else { 1042 *sc_end++ = '\n'; /* add newline between 1043 * comments */ 1044 *sc_end++ = ' '; 1045 --line_no; 1046 } 1047 bcopy(s_lab + com_start, sc_end, com_end - com_start); 1048 sc_end += com_end - com_start; 1049 if (sc_end >= &save_com[sc_size]) 1050 abort(); 1051 e_lab = s_lab + com_start; 1052 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1053 e_lab--; 1054 bp_save = buf_ptr; /* save current input buffer */ 1055 be_save = buf_end; 1056 buf_ptr = save_com; /* fix so that subsequent calls to 1057 * lexi will take tokens out of 1058 * save_com */ 1059 *sc_end++ = ' '; /* add trailing blank, just in case */ 1060 buf_end = sc_end; 1061 sc_end = 0; 1062 } 1063 *e_lab = '\0'; /* null terminate line */ 1064 ps.pcase = false; 1065 } 1066 1067 if (strncmp(s_lab, "#if", 3) == 0) { 1068 if (blanklines_around_conditional_compilation) { 1069 register c; 1070 prefix_blankline_requested++; 1071 while ((c = getc(input)) == '\n'); 1072 ungetc(c, input); 1073 } 1074 if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) { 1075 match_state[ifdef_level].tos = -1; 1076 state_stack[ifdef_level++] = ps; 1077 } 1078 else 1079 diag(1, "#if stack overflow"); 1080 } 1081 else if (strncmp(s_lab, "#else", 5) == 0) 1082 if (ifdef_level <= 0) 1083 diag(1, "Unmatched #else"); 1084 else { 1085 match_state[ifdef_level - 1] = ps; 1086 ps = state_stack[ifdef_level - 1]; 1087 } 1088 else if (strncmp(s_lab, "#endif", 6) == 0) { 1089 if (ifdef_level <= 0) 1090 diag(1, "Unmatched #endif"); 1091 else { 1092 ifdef_level--; 1093 1094 #ifdef undef 1095 /* 1096 * This match needs to be more intelligent before the 1097 * message is useful 1098 */ 1099 if (match_state[ifdef_level].tos >= 0 1100 && bcmp(&ps, &match_state[ifdef_level], sizeof ps)) 1101 diag(0, "Syntactically inconsistant #ifdef alternatives."); 1102 #endif 1103 } 1104 if (blanklines_around_conditional_compilation) { 1105 postfix_blankline_requested++; 1106 n_real_blanklines = 0; 1107 } 1108 } 1109 break; /* subsequent processing of the newline 1110 * character will cause the line to be printed */ 1111 1112 case comment: /* we have gotten a /* this is a biggie */ 1113 if (flushed_nl) { /* we should force a broken line here */ 1114 flushed_nl = false; 1115 dump_line(); 1116 ps.want_blank = false; /* dont insert blank at line start */ 1117 force_nl = false; 1118 } 1119 pr_comment(); 1120 break; 1121 } /* end of big switch stmt */ 1122 1123 *e_code = '\0'; /* make sure code section is null terminated */ 1124 if (type_code != comment && type_code != newline && type_code != preesc) 1125 ps.last_token = type_code; 1126 } /* end of main while (1) loop */ 1127 } 1128 1129 /* 1130 * copy input file to backup file if in_name is /blah/blah/blah/file, then 1131 * backup file will be ".Bfile" then make the backup file the input and 1132 * original input file the output 1133 */ 1134 bakcopy() 1135 { 1136 int n, 1137 bakchn; 1138 char buff[8 * 1024]; 1139 register char *p; 1140 1141 /* construct file name .Bfile */ 1142 for (p = in_name; *p; p++); /* skip to end of string */ 1143 while (p > in_name && *p != '/') /* find last '/' */ 1144 p--; 1145 if (*p == '/') 1146 p++; 1147 sprintf(bakfile, "%s.BAK", p); 1148 1149 /* copy in_name to backup file */ 1150 bakchn = creat(bakfile, 0600); 1151 if (bakchn < 0) 1152 err(bakfile); 1153 while (n = read(fileno(input), buff, sizeof buff)) 1154 if (write(bakchn, buff, n) != n) 1155 err(bakfile); 1156 if (n < 0) 1157 err(in_name); 1158 close(bakchn); 1159 fclose(input); 1160 1161 /* re-open backup file as the input file */ 1162 input = fopen(bakfile, "r"); 1163 if (input == 0) 1164 err(bakfile); 1165 /* now the original input file will be the output */ 1166 output = fopen(in_name, "w"); 1167 if (output == 0) { 1168 unlink(bakfile); 1169 err(in_name); 1170 } 1171 } 1172 1173 err(msg) 1174 char *msg; 1175 { 1176 extern int errno; 1177 char *strerror(); 1178 1179 (void)fprintf(stderr, "indent: %s: %s\n", msg, strerror(errno)); 1180 exit(1); 1181 } 1182