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 1.3 1996/05/07 18:32:28 jtc 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 #include <errno.h> 59 60 char *in_name = "Standard Input"; /* will always point to name of input 61 * file */ 62 char *out_name = "Standard Output"; /* will always point to name 63 * of output file */ 64 char bakfile[MAXPATHLEN] = ""; 65 66 main(argc, argv) 67 int argc; 68 char **argv; 69 { 70 71 extern int found_err; /* flag set in diag() on error */ 72 int dec_ind; /* current indentation for declarations */ 73 int di_stack[20]; /* a stack of structure indentation levels */ 74 int flushed_nl; /* used when buffering up comments to remember 75 * that a newline was passed over */ 76 int force_nl; /* when true, code must be broken */ 77 int hd_type; /* used to store type of stmt for if (...), 78 * for (...), etc */ 79 register int i; /* local loop counter */ 80 int scase; /* set to true when we see a case, so we will 81 * know what to do with the following colon */ 82 int sp_sw; /* when true, we are in the expressin of 83 * if(...), while(...), etc. */ 84 int squest; /* when this is positive, we have seen a ? 85 * without the matching : in a <c>?<s>:<s> 86 * construct */ 87 register char *t_ptr; /* used for copying tokens */ 88 int type_code; /* the type of token, returned by lexi */ 89 90 int last_else = 0; /* true iff last keyword was an else */ 91 92 93 /*-----------------------------------------------*\ 94 | INITIALIZATION | 95 \*-----------------------------------------------*/ 96 97 98 ps.p_stack[0] = stmt; /* this is the parser's stack */ 99 ps.last_nl = true; /* this is true if the last thing scanned was 100 * a newline */ 101 ps.last_token = semicolon; 102 combuf = (char *) malloc(bufsize); 103 labbuf = (char *) malloc(bufsize); 104 codebuf = (char *) malloc(bufsize); 105 tokenbuf = (char *) malloc(bufsize); 106 l_com = combuf + bufsize - 5; 107 l_lab = labbuf + bufsize - 5; 108 l_code = codebuf + bufsize - 5; 109 l_token = tokenbuf + bufsize - 5; 110 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and 111 * comment buffers */ 112 combuf[1] = codebuf[1] = labbuf[1] = '\0'; 113 ps.else_if = 1; /* Default else-if special processing to on */ 114 s_lab = e_lab = labbuf + 1; 115 s_code = e_code = codebuf + 1; 116 s_com = e_com = combuf + 1; 117 s_token = e_token = tokenbuf + 1; 118 119 in_buffer = (char *) malloc(10); 120 in_buffer_limit = in_buffer + 8; 121 buf_ptr = buf_end = in_buffer; 122 line_no = 1; 123 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false; 124 sp_sw = force_nl = false; 125 ps.in_or_st = false; 126 ps.bl_line = true; 127 dec_ind = 0; 128 di_stack[ps.dec_nest = 0] = 0; 129 ps.want_blank = ps.in_stmt = ps.ind_stmt = false; 130 131 132 scase = ps.pcase = false; 133 squest = 0; 134 sc_end = 0; 135 bp_save = 0; 136 be_save = 0; 137 138 output = 0; 139 140 141 142 /*--------------------------------------------------*\ 143 | COMMAND LINE SCAN | 144 \*--------------------------------------------------*/ 145 146 #ifdef undef 147 max_col = 78; /* -l78 */ 148 lineup_to_parens = 1; /* -lp */ 149 ps.ljust_decl = 0; /* -ndj */ 150 ps.com_ind = 33; /* -c33 */ 151 star_comment_cont = 1; /* -sc */ 152 ps.ind_size = 8; /* -i8 */ 153 verbose = 0; 154 ps.decl_indent = 16; /* -di16 */ 155 ps.indent_parameters = 1; /* -ip */ 156 ps.decl_com_ind = 0; /* if this is not set to some positive value 157 * by an arg, we will set this equal to 158 * ps.com_ind */ 159 btype_2 = 1; /* -br */ 160 cuddle_else = 1; /* -ce */ 161 ps.unindent_displace = 0; /* -d0 */ 162 ps.case_indent = 0; /* -cli0 */ 163 format_col1_comments = 1; /* -fc1 */ 164 procnames_start_line = 1; /* -psl */ 165 proc_calls_space = 0; /* -npcs */ 166 comment_delimiter_on_blankline = 1; /* -cdb */ 167 ps.leave_comma = 1; /* -nbc */ 168 #endif 169 170 for (i = 1; i < argc; ++i) 171 if (strcmp(argv[i], "-npro") == 0) 172 break; 173 set_defaults(); 174 if (i >= argc) 175 set_profile(); 176 177 for (i = 1; i < argc; ++i) { 178 179 /* 180 * look thru args (if any) for changes to defaults 181 */ 182 if (argv[i][0] != '-') {/* no flag on parameter */ 183 if (input == 0) { /* we must have the input file */ 184 in_name = argv[i]; /* remember name of input file */ 185 input = fopen(in_name, "r"); 186 if (input == 0) /* check for open error */ 187 err(in_name); 188 continue; 189 } 190 else if (output == 0) { /* we have the output file */ 191 out_name = argv[i]; /* remember name of output file */ 192 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite 193 * the file */ 194 fprintf(stderr, "indent: input and output files must be different\n"); 195 exit(1); 196 } 197 output = fopen(out_name, "w"); 198 if (output == 0) /* check for create error */ 199 err(out_name); 200 continue; 201 } 202 fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]); 203 exit(1); 204 } 205 else 206 set_option(argv[i]); 207 } /* end of for */ 208 if (input == 0) { 209 fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n"); 210 exit(1); 211 } 212 if (output == 0) 213 if (troff) 214 output = stdout; 215 else { 216 out_name = in_name; 217 bakcopy(); 218 } 219 if (ps.com_ind <= 1) 220 ps.com_ind = 2; /* dont put normal comments before column 2 */ 221 if (troff) { 222 if (bodyf.font[0] == 0) 223 parsefont(&bodyf, "R"); 224 if (scomf.font[0] == 0) 225 parsefont(&scomf, "I"); 226 if (blkcomf.font[0] == 0) 227 blkcomf = scomf, blkcomf.size += 2; 228 if (boxcomf.font[0] == 0) 229 boxcomf = blkcomf; 230 if (stringf.font[0] == 0) 231 parsefont(&stringf, "L"); 232 if (keywordf.font[0] == 0) 233 parsefont(&keywordf, "B"); 234 writefdef(&bodyf, 'B'); 235 writefdef(&scomf, 'C'); 236 writefdef(&blkcomf, 'L'); 237 writefdef(&boxcomf, 'X'); 238 writefdef(&stringf, 'S'); 239 writefdef(&keywordf, 'K'); 240 } 241 if (block_comment_max_col <= 0) 242 block_comment_max_col = max_col; 243 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */ 244 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind; 245 if (continuation_indent == 0) 246 continuation_indent = ps.ind_size; 247 fill_buffer(); /* get first batch of stuff into input buffer */ 248 249 parse(semicolon); 250 { 251 register char *p = buf_ptr; 252 register col = 1; 253 254 while (1) { 255 if (*p == ' ') 256 col++; 257 else if (*p == '\t') 258 col = ((col - 1) & ~7) + 9; 259 else 260 break; 261 p++; 262 } 263 if (col > ps.ind_size) 264 ps.ind_level = ps.i_l_follow = col / ps.ind_size; 265 } 266 if (troff) { 267 register char *p = in_name, 268 *beg = in_name; 269 270 while (*p) 271 if (*p++ == '/') 272 beg = p; 273 fprintf(output, ".Fn \"%s\"\n", beg); 274 } 275 /* 276 * START OF MAIN LOOP 277 */ 278 279 while (1) { /* this is the main loop. it will go until we 280 * reach eof */ 281 int is_procname; 282 283 type_code = lexi(); /* lexi reads one token. The actual 284 * characters read are stored in "token". lexi 285 * returns a code indicating the type of token */ 286 is_procname = ps.procname[0]; 287 288 /* 289 * The following code moves everything following an if (), while (), 290 * else, etc. up to the start of the following stmt to a buffer. This 291 * allows proper handling of both kinds of brace placement. 292 */ 293 294 flushed_nl = false; 295 while (ps.search_brace) { /* if we scanned an if(), while(), 296 * etc., we might need to copy stuff 297 * into a buffer we must loop, copying 298 * stuff into save_com, until we find 299 * the start of the stmt which follows 300 * the if, or whatever */ 301 switch (type_code) { 302 case newline: 303 ++line_no; 304 flushed_nl = true; 305 case form_feed: 306 break; /* form feeds and newlines found here will be 307 * ignored */ 308 309 case lbrace: /* this is a brace that starts the compound 310 * stmt */ 311 if (sc_end == 0) { /* ignore buffering if a comment wasnt 312 * stored up */ 313 ps.search_brace = false; 314 goto check_type; 315 } 316 if (btype_2) { 317 save_com[0] = '{'; /* we either want to put the brace 318 * right after the if */ 319 goto sw_buffer; /* go to common code to get out of 320 * this loop */ 321 } 322 case comment: /* we have a comment, so we must copy it into 323 * the buffer */ 324 if (!flushed_nl || sc_end != 0) { 325 if (sc_end == 0) { /* if this is the first comment, we 326 * must set up the buffer */ 327 save_com[0] = save_com[1] = ' '; 328 sc_end = &(save_com[2]); 329 } 330 else { 331 *sc_end++ = '\n'; /* add newline between 332 * comments */ 333 *sc_end++ = ' '; 334 --line_no; 335 } 336 *sc_end++ = '/'; /* copy in start of comment */ 337 *sc_end++ = '*'; 338 339 for (;;) { /* loop until we get to the end of the comment */ 340 *sc_end = *buf_ptr++; 341 if (buf_ptr >= buf_end) 342 fill_buffer(); 343 344 if (*sc_end++ == '*' && *buf_ptr == '/') 345 break; /* we are at end of comment */ 346 347 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer 348 * overflow */ 349 diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever."); 350 fflush(output); 351 exit(1); 352 } 353 } 354 *sc_end++ = '/'; /* add ending slash */ 355 if (++buf_ptr >= buf_end) /* get past / in buffer */ 356 fill_buffer(); 357 break; 358 } 359 default: /* it is the start of a normal statment */ 360 if (flushed_nl) /* if we flushed a newline, make sure it is 361 * put back */ 362 force_nl = true; 363 if (type_code == sp_paren && *token == 'i' 364 && last_else && ps.else_if 365 || type_code == sp_nparen && *token == 'e' 366 && e_code != s_code && e_code[-1] == '}') 367 force_nl = false; 368 369 if (sc_end == 0) { /* ignore buffering if comment wasnt 370 * saved up */ 371 ps.search_brace = false; 372 goto check_type; 373 } 374 if (force_nl) { /* if we should insert a nl here, put it into 375 * the buffer */ 376 force_nl = false; 377 --line_no; /* this will be re-increased when the nl is 378 * read from the buffer */ 379 *sc_end++ = '\n'; 380 *sc_end++ = ' '; 381 if (verbose && !flushed_nl) /* print error msg if the line 382 * was not already broken */ 383 diag(0, "Line broken"); 384 flushed_nl = false; 385 } 386 for (t_ptr = token; *t_ptr; ++t_ptr) 387 *sc_end++ = *t_ptr; /* copy token into temp buffer */ 388 ps.procname[0] = 0; 389 390 sw_buffer: 391 ps.search_brace = false; /* stop looking for start of 392 * stmt */ 393 bp_save = buf_ptr; /* save current input buffer */ 394 be_save = buf_end; 395 buf_ptr = save_com; /* fix so that subsequent calls to 396 * lexi will take tokens out of 397 * save_com */ 398 *sc_end++ = ' ';/* add trailing blank, just in case */ 399 buf_end = sc_end; 400 sc_end = 0; 401 break; 402 } /* end of switch */ 403 if (type_code != 0) /* we must make this check, just in case there 404 * was an unexpected EOF */ 405 type_code = lexi(); /* read another token */ 406 /* if (ps.search_brace) ps.procname[0] = 0; */ 407 if ((is_procname = ps.procname[0]) && flushed_nl 408 && !procnames_start_line && ps.in_decl 409 && type_code == ident) 410 flushed_nl = 0; 411 } /* end of while (search_brace) */ 412 last_else = 0; 413 check_type: 414 if (type_code == 0) { /* we got eof */ 415 if (s_lab != e_lab || s_code != e_code 416 || s_com != e_com) /* must dump end of line */ 417 dump_line(); 418 if (ps.tos > 1) /* check for balanced braces */ 419 diag(1, "Stuff missing from end of file."); 420 421 if (verbose) { 422 printf("There were %d output lines and %d comments\n", 423 ps.out_lines, ps.out_coms); 424 printf("(Lines with comments)/(Lines with code): %6.3f\n", 425 (1.0 * ps.com_lines) / code_lines); 426 } 427 fflush(output); 428 exit(found_err); 429 } 430 if ( 431 (type_code != comment) && 432 (type_code != newline) && 433 (type_code != preesc) && 434 (type_code != form_feed)) { 435 if (force_nl && 436 (type_code != semicolon) && 437 (type_code != lbrace || !btype_2)) { 438 /* we should force a broken line here */ 439 if (verbose && !flushed_nl) 440 diag(0, "Line broken"); 441 flushed_nl = false; 442 dump_line(); 443 ps.want_blank = false; /* dont insert blank at line start */ 444 force_nl = false; 445 } 446 ps.in_stmt = true; /* turn on flag which causes an extra level of 447 * indentation. this is turned off by a ; or 448 * '}' */ 449 if (s_com != e_com) { /* the turkey has embedded a comment 450 * in a line. fix it */ 451 *e_code++ = ' '; 452 for (t_ptr = s_com; *t_ptr; ++t_ptr) { 453 CHECK_SIZE_CODE; 454 *e_code++ = *t_ptr; 455 } 456 *e_code++ = ' '; 457 *e_code = '\0'; /* null terminate code sect */ 458 ps.want_blank = false; 459 e_com = s_com; 460 } 461 } 462 else if (type_code != comment) /* preserve force_nl thru a comment */ 463 force_nl = false; /* cancel forced newline after newline, form 464 * feed, etc */ 465 466 467 468 /*-----------------------------------------------------*\ 469 | do switch on type of token scanned | 470 \*-----------------------------------------------------*/ 471 CHECK_SIZE_CODE; 472 switch (type_code) { /* now, decide what to do with the token */ 473 474 case form_feed: /* found a form feed in line */ 475 ps.use_ff = true; /* a form feed is treated much like a newline */ 476 dump_line(); 477 ps.want_blank = false; 478 break; 479 480 case newline: 481 if (ps.last_token != comma || ps.p_l_follow > 0 482 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) { 483 dump_line(); 484 ps.want_blank = false; 485 } 486 ++line_no; /* keep track of input line number */ 487 break; 488 489 case lparen: /* got a '(' or '[' */ 490 ++ps.p_l_follow; /* count parens to make Healy happy */ 491 if (ps.want_blank && *token != '[' && 492 (ps.last_token != ident || proc_calls_space 493 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon)))) 494 *e_code++ = ' '; 495 if (ps.in_decl && !ps.block_init) 496 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) { 497 ps.dumped_decl_indent = 1; 498 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 499 e_code += strlen(e_code); 500 } 501 else { 502 while ((e_code - s_code) < dec_ind) { 503 CHECK_SIZE_CODE; 504 *e_code++ = ' '; 505 } 506 *e_code++ = token[0]; 507 } 508 else 509 *e_code++ = token[0]; 510 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code; 511 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent 512 && ps.paren_indents[0] < 2 * ps.ind_size) 513 ps.paren_indents[0] = 2 * ps.ind_size; 514 ps.want_blank = false; 515 if (ps.in_or_st && *token == '(' && ps.tos <= 2) { 516 /* 517 * this is a kluge to make sure that declarations will be 518 * aligned right if proc decl has an explicit type on it, i.e. 519 * "int a(x) {..." 520 */ 521 parse(semicolon); /* I said this was a kluge... */ 522 ps.in_or_st = false; /* turn off flag for structure decl or 523 * initialization */ 524 } 525 if (ps.sizeof_keyword) 526 ps.sizeof_mask |= 1 << ps.p_l_follow; 527 break; 528 529 case rparen: /* got a ')' or ']' */ 530 rparen_count--; 531 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) { 532 ps.last_u_d = true; 533 ps.cast_mask &= (1 << ps.p_l_follow) - 1; 534 } 535 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1; 536 if (--ps.p_l_follow < 0) { 537 ps.p_l_follow = 0; 538 diag(0, "Extra %c", *token); 539 } 540 if (e_code == s_code) /* if the paren starts the line */ 541 ps.paren_level = ps.p_l_follow; /* then indent it */ 542 543 *e_code++ = token[0]; 544 ps.want_blank = true; 545 546 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if 547 * (...), or some such */ 548 sp_sw = false; 549 force_nl = true;/* must force newline after if */ 550 ps.last_u_d = true; /* inform lexi that a following 551 * operator is unary */ 552 ps.in_stmt = false; /* dont use stmt continuation 553 * indentation */ 554 555 parse(hd_type); /* let parser worry about if, or whatever */ 556 } 557 ps.search_brace = btype_2; /* this should insure that constructs 558 * such as main(){...} and int[]{...} 559 * have their braces put in the right 560 * place */ 561 break; 562 563 case unary_op: /* this could be any unary operation */ 564 if (ps.want_blank) 565 *e_code++ = ' '; 566 567 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) { 568 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); 569 ps.dumped_decl_indent = 1; 570 e_code += strlen(e_code); 571 } 572 else { 573 char *res = token; 574 575 if (ps.in_decl && !ps.block_init) { /* if this is a unary op 576 * in a declaration, we 577 * should indent this 578 * token */ 579 for (i = 0; token[i]; ++i); /* find length of token */ 580 while ((e_code - s_code) < (dec_ind - i)) { 581 CHECK_SIZE_CODE; 582 *e_code++ = ' '; /* pad it */ 583 } 584 } 585 if (troff && token[0] == '-' && token[1] == '>') 586 res = "\\(->"; 587 for (t_ptr = res; *t_ptr; ++t_ptr) { 588 CHECK_SIZE_CODE; 589 *e_code++ = *t_ptr; 590 } 591 } 592 ps.want_blank = false; 593 break; 594 595 case binary_op: /* any binary operation */ 596 if (ps.want_blank) 597 *e_code++ = ' '; 598 { 599 char *res = token; 600 601 if (troff) 602 switch (token[0]) { 603 case '<': 604 if (token[1] == '=') 605 res = "\\(<="; 606 break; 607 case '>': 608 if (token[1] == '=') 609 res = "\\(>="; 610 break; 611 case '!': 612 if (token[1] == '=') 613 res = "\\(!="; 614 break; 615 case '|': 616 if (token[1] == '|') 617 res = "\\(br\\(br"; 618 else if (token[1] == 0) 619 res = "\\(br"; 620 break; 621 } 622 for (t_ptr = res; *t_ptr; ++t_ptr) { 623 CHECK_SIZE_CODE; 624 *e_code++ = *t_ptr; /* move the operator */ 625 } 626 } 627 ps.want_blank = true; 628 break; 629 630 case postop: /* got a trailing ++ or -- */ 631 *e_code++ = token[0]; 632 *e_code++ = token[1]; 633 ps.want_blank = true; 634 break; 635 636 case question: /* got a ? */ 637 squest++; /* this will be used when a later colon 638 * appears so we can distinguish the 639 * <c>?<n>:<n> construct */ 640 if (ps.want_blank) 641 *e_code++ = ' '; 642 *e_code++ = '?'; 643 ps.want_blank = true; 644 break; 645 646 case casestmt: /* got word 'case' or 'default' */ 647 scase = true; /* so we can process the later colon properly */ 648 goto copy_id; 649 650 case colon: /* got a ':' */ 651 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ 652 --squest; 653 if (ps.want_blank) 654 *e_code++ = ' '; 655 *e_code++ = ':'; 656 ps.want_blank = true; 657 break; 658 } 659 if (ps.in_decl) { 660 *e_code++ = ':'; 661 ps.want_blank = false; 662 break; 663 } 664 ps.in_stmt = false; /* seeing a label does not imply we are in a 665 * stmt */ 666 for (t_ptr = s_code; *t_ptr; ++t_ptr) 667 *e_lab++ = *t_ptr; /* turn everything so far into a label */ 668 e_code = s_code; 669 *e_lab++ = ':'; 670 *e_lab++ = ' '; 671 *e_lab = '\0'; 672 673 force_nl = ps.pcase = scase; /* ps.pcase will be used by 674 * dump_line to decide how to 675 * indent the label. force_nl 676 * will force a case n: to be 677 * on a line by itself */ 678 scase = false; 679 ps.want_blank = false; 680 break; 681 682 case semicolon: /* got a ';' */ 683 ps.in_or_st = false;/* we are not in an initialization or 684 * structure declaration */ 685 scase = false; /* these will only need resetting in a error */ 686 squest = 0; 687 if (ps.last_token == rparen && rparen_count == 0) 688 ps.in_parameter_declaration = 0; 689 ps.cast_mask = 0; 690 ps.sizeof_mask = 0; 691 ps.block_init = 0; 692 ps.block_init_level = 0; 693 ps.just_saw_decl--; 694 695 if (ps.in_decl && s_code == e_code && !ps.block_init) 696 while ((e_code - s_code) < (dec_ind - 1)) { 697 CHECK_SIZE_CODE; 698 *e_code++ = ' '; 699 } 700 701 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level 702 * structure declaration, we 703 * arent any more */ 704 705 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) { 706 707 /* 708 * This should be true iff there were unbalanced parens in the 709 * stmt. It is a bit complicated, because the semicolon might 710 * be in a for stmt 711 */ 712 diag(1, "Unbalanced parens"); 713 ps.p_l_follow = 0; 714 if (sp_sw) { /* this is a check for a if, while, etc. with 715 * unbalanced parens */ 716 sp_sw = false; 717 parse(hd_type); /* dont lose the if, or whatever */ 718 } 719 } 720 *e_code++ = ';'; 721 ps.want_blank = true; 722 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the 723 * middle of a stmt */ 724 725 if (!sp_sw) { /* if not if for (;;) */ 726 parse(semicolon); /* let parser know about end of stmt */ 727 force_nl = true;/* force newline after a end of stmt */ 728 } 729 break; 730 731 case lbrace: /* got a '{' */ 732 ps.in_stmt = false; /* dont indent the {} */ 733 if (!ps.block_init) 734 force_nl = true;/* force other stuff on same line as '{' onto 735 * new line */ 736 else if (ps.block_init_level <= 0) 737 ps.block_init_level = 1; 738 else 739 ps.block_init_level++; 740 741 if (s_code != e_code && !ps.block_init) { 742 if (!btype_2) { 743 dump_line(); 744 ps.want_blank = false; 745 } 746 else if (ps.in_parameter_declaration && !ps.in_or_st) { 747 ps.i_l_follow = 0; 748 dump_line(); 749 ps.want_blank = false; 750 } 751 } 752 if (ps.in_parameter_declaration) 753 prefix_blankline_requested = 0; 754 755 if (ps.p_l_follow > 0) { /* check for preceeding unbalanced 756 * parens */ 757 diag(1, "Unbalanced parens"); 758 ps.p_l_follow = 0; 759 if (sp_sw) { /* check for unclosed if, for, etc. */ 760 sp_sw = false; 761 parse(hd_type); 762 ps.ind_level = ps.i_l_follow; 763 } 764 } 765 if (s_code == e_code) 766 ps.ind_stmt = false; /* dont put extra indentation on line 767 * with '{' */ 768 if (ps.in_decl && ps.in_or_st) { /* this is either a structure 769 * declaration or an init */ 770 di_stack[ps.dec_nest++] = dec_ind; 771 /* ? dec_ind = 0; */ 772 } 773 else { 774 ps.decl_on_line = false; /* we cant be in the middle of 775 * a declaration, so dont do 776 * special indentation of 777 * comments */ 778 if (blanklines_after_declarations_at_proctop 779 && ps.in_parameter_declaration) 780 postfix_blankline_requested = 1; 781 ps.in_parameter_declaration = 0; 782 } 783 dec_ind = 0; 784 parse(lbrace); /* let parser know about this */ 785 if (ps.want_blank) /* put a blank before '{' if '{' is not at 786 * start of line */ 787 *e_code++ = ' '; 788 ps.want_blank = false; 789 *e_code++ = '{'; 790 ps.just_saw_decl = 0; 791 break; 792 793 case rbrace: /* got a '}' */ 794 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be 795 * omitted in 796 * declarations */ 797 parse(semicolon); 798 if (ps.p_l_follow) {/* check for unclosed if, for, else. */ 799 diag(1, "Unbalanced parens"); 800 ps.p_l_follow = 0; 801 sp_sw = false; 802 } 803 ps.just_saw_decl = 0; 804 ps.block_init_level--; 805 if (s_code != e_code && !ps.block_init) { /* '}' must be first on 806 * line */ 807 if (verbose) 808 diag(0, "Line broken"); 809 dump_line(); 810 } 811 *e_code++ = '}'; 812 ps.want_blank = true; 813 ps.in_stmt = ps.ind_stmt = false; 814 if (ps.dec_nest > 0) { /* we are in multi-level structure 815 * declaration */ 816 dec_ind = di_stack[--ps.dec_nest]; 817 if (ps.dec_nest == 0 && !ps.in_parameter_declaration) 818 ps.just_saw_decl = 2; 819 ps.in_decl = true; 820 } 821 prefix_blankline_requested = 0; 822 parse(rbrace); /* let parser know about this */ 823 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead 824 && ps.il[ps.tos] >= ps.ind_level; 825 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0) 826 postfix_blankline_requested = 1; 827 break; 828 829 case swstmt: /* got keyword "switch" */ 830 sp_sw = true; 831 hd_type = swstmt; /* keep this for when we have seen the 832 * expression */ 833 goto copy_id; /* go move the token into buffer */ 834 835 case sp_paren: /* token is if, while, for */ 836 sp_sw = true; /* the interesting stuff is done after the 837 * expression is scanned */ 838 hd_type = (*token == 'i' ? ifstmt : 839 (*token == 'w' ? whilestmt : forstmt)); 840 841 /* 842 * remember the type of header for later use by parser 843 */ 844 goto copy_id; /* copy the token into line */ 845 846 case sp_nparen: /* got else, do */ 847 ps.in_stmt = false; 848 if (*token == 'e') { 849 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) { 850 if (verbose) 851 diag(0, "Line broken"); 852 dump_line();/* make sure this starts a line */ 853 ps.want_blank = false; 854 } 855 force_nl = true;/* also, following stuff must go onto new line */ 856 last_else = 1; 857 parse(elselit); 858 } 859 else { 860 if (e_code != s_code) { /* make sure this starts a line */ 861 if (verbose) 862 diag(0, "Line broken"); 863 dump_line(); 864 ps.want_blank = false; 865 } 866 force_nl = true;/* also, following stuff must go onto new line */ 867 last_else = 0; 868 parse(dolit); 869 } 870 goto copy_id; /* move the token into line */ 871 872 case decl: /* we have a declaration type (int, register, 873 * etc.) */ 874 parse(decl); /* let parser worry about indentation */ 875 if (ps.last_token == rparen && ps.tos <= 1) { 876 ps.in_parameter_declaration = 1; 877 if (s_code != e_code) { 878 dump_line(); 879 ps.want_blank = 0; 880 } 881 } 882 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) { 883 ps.ind_level = ps.i_l_follow = 1; 884 ps.ind_stmt = 0; 885 } 886 ps.in_or_st = true; /* this might be a structure or initialization 887 * declaration */ 888 ps.in_decl = ps.decl_on_line = true; 889 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) 890 ps.just_saw_decl = 2; 891 prefix_blankline_requested = 0; 892 for (i = 0; token[i++];); /* get length of token */ 893 894 /* 895 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent 896 * : i); 897 */ 898 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i; 899 goto copy_id; 900 901 case ident: /* got an identifier or constant */ 902 if (ps.in_decl) { /* if we are in a declaration, we must indent 903 * identifier */ 904 if (ps.want_blank) 905 *e_code++ = ' '; 906 ps.want_blank = false; 907 if (is_procname == 0 || !procnames_start_line) { 908 if (!ps.block_init) 909 if (troff && !ps.dumped_decl_indent) { 910 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7); 911 ps.dumped_decl_indent = 1; 912 e_code += strlen(e_code); 913 } 914 else 915 while ((e_code - s_code) < dec_ind) { 916 CHECK_SIZE_CODE; 917 *e_code++ = ' '; 918 } 919 } 920 else { 921 if (dec_ind && s_code != e_code) 922 dump_line(); 923 dec_ind = 0; 924 ps.want_blank = false; 925 } 926 } 927 else if (sp_sw && ps.p_l_follow == 0) { 928 sp_sw = false; 929 force_nl = true; 930 ps.last_u_d = true; 931 ps.in_stmt = false; 932 parse(hd_type); 933 } 934 copy_id: 935 if (ps.want_blank) 936 *e_code++ = ' '; 937 if (troff && ps.its_a_keyword) { 938 e_code = chfont(&bodyf, &keywordf, e_code); 939 for (t_ptr = token; *t_ptr; ++t_ptr) { 940 CHECK_SIZE_CODE; 941 *e_code++ = keywordf.allcaps && islower(*t_ptr) 942 ? toupper(*t_ptr) : *t_ptr; 943 } 944 e_code = chfont(&keywordf, &bodyf, e_code); 945 } 946 else 947 for (t_ptr = token; *t_ptr; ++t_ptr) { 948 CHECK_SIZE_CODE; 949 *e_code++ = *t_ptr; 950 } 951 ps.want_blank = true; 952 break; 953 954 case period: /* treat a period kind of like a binary 955 * operation */ 956 *e_code++ = '.'; /* move the period into line */ 957 ps.want_blank = false; /* dont put a blank after a period */ 958 break; 959 960 case comma: 961 ps.want_blank = (s_code != e_code); /* only put blank after comma 962 * if comma does not start the 963 * line */ 964 if (ps.in_decl && is_procname == 0 && !ps.block_init) 965 while ((e_code - s_code) < (dec_ind - 1)) { 966 CHECK_SIZE_CODE; 967 *e_code++ = ' '; 968 } 969 970 *e_code++ = ','; 971 if (ps.p_l_follow == 0) { 972 if (ps.block_init_level <= 0) 973 ps.block_init = 0; 974 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8)) 975 force_nl = true; 976 } 977 break; 978 979 case preesc: /* got the character '#' */ 980 if ((s_com != e_com) || 981 (s_lab != e_lab) || 982 (s_code != e_code)) 983 dump_line(); 984 *e_lab++ = '#'; /* move whole line to 'label' buffer */ 985 { 986 int in_comment = 0; 987 int com_start = 0; 988 char quote = 0; 989 int com_end = 0; 990 991 while (*buf_ptr == ' ' || *buf_ptr == '\t') { 992 buf_ptr++; 993 if (buf_ptr >= buf_end) 994 fill_buffer(); 995 } 996 while (*buf_ptr != '\n' || in_comment) { 997 CHECK_SIZE_LAB; 998 *e_lab = *buf_ptr++; 999 if (buf_ptr >= buf_end) 1000 fill_buffer(); 1001 switch (*e_lab++) { 1002 case BACKSLASH: 1003 if (troff) 1004 *e_lab++ = BACKSLASH; 1005 if (!in_comment) { 1006 *e_lab++ = *buf_ptr++; 1007 if (buf_ptr >= buf_end) 1008 fill_buffer(); 1009 } 1010 break; 1011 case '/': 1012 if (*buf_ptr == '*' && !in_comment && !quote) { 1013 in_comment = 1; 1014 *e_lab++ = *buf_ptr++; 1015 com_start = e_lab - s_lab - 2; 1016 } 1017 break; 1018 case '"': 1019 if (quote == '"') 1020 quote = 0; 1021 break; 1022 case '\'': 1023 if (quote == '\'') 1024 quote = 0; 1025 break; 1026 case '*': 1027 if (*buf_ptr == '/' && in_comment) { 1028 in_comment = 0; 1029 *e_lab++ = *buf_ptr++; 1030 com_end = e_lab - s_lab; 1031 } 1032 break; 1033 } 1034 } 1035 1036 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1037 e_lab--; 1038 if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on 1039 * preprocessor line */ 1040 if (sc_end == 0) /* if this is the first comment, we 1041 * must set up the buffer */ 1042 sc_end = &(save_com[0]); 1043 else { 1044 *sc_end++ = '\n'; /* add newline between 1045 * comments */ 1046 *sc_end++ = ' '; 1047 --line_no; 1048 } 1049 bcopy(s_lab + com_start, sc_end, com_end - com_start); 1050 sc_end += com_end - com_start; 1051 if (sc_end >= &save_com[sc_size]) 1052 abort(); 1053 e_lab = s_lab + com_start; 1054 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1055 e_lab--; 1056 bp_save = buf_ptr; /* save current input buffer */ 1057 be_save = buf_end; 1058 buf_ptr = save_com; /* fix so that subsequent calls to 1059 * lexi will take tokens out of 1060 * save_com */ 1061 *sc_end++ = ' '; /* add trailing blank, just in case */ 1062 buf_end = sc_end; 1063 sc_end = 0; 1064 } 1065 *e_lab = '\0'; /* null terminate line */ 1066 ps.pcase = false; 1067 } 1068 1069 if (strncmp(s_lab, "#if", 3) == 0) { 1070 if (blanklines_around_conditional_compilation) { 1071 register c; 1072 prefix_blankline_requested++; 1073 while ((c = getc(input)) == '\n'); 1074 ungetc(c, input); 1075 } 1076 if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) { 1077 match_state[ifdef_level].tos = -1; 1078 state_stack[ifdef_level++] = ps; 1079 } 1080 else 1081 diag(1, "#if stack overflow"); 1082 } 1083 else if (strncmp(s_lab, "#else", 5) == 0) 1084 if (ifdef_level <= 0) 1085 diag(1, "Unmatched #else"); 1086 else { 1087 match_state[ifdef_level - 1] = ps; 1088 ps = state_stack[ifdef_level - 1]; 1089 } 1090 else if (strncmp(s_lab, "#endif", 6) == 0) { 1091 if (ifdef_level <= 0) 1092 diag(1, "Unmatched #endif"); 1093 else { 1094 ifdef_level--; 1095 1096 #ifdef undef 1097 /* 1098 * This match needs to be more intelligent before the 1099 * message is useful 1100 */ 1101 if (match_state[ifdef_level].tos >= 0 1102 && bcmp(&ps, &match_state[ifdef_level], sizeof ps)) 1103 diag(0, "Syntactically inconsistant #ifdef alternatives."); 1104 #endif 1105 } 1106 if (blanklines_around_conditional_compilation) { 1107 postfix_blankline_requested++; 1108 n_real_blanklines = 0; 1109 } 1110 } 1111 break; /* subsequent processing of the newline 1112 * character will cause the line to be printed */ 1113 1114 case comment: /* we have gotten a /* this is a biggie */ 1115 if (flushed_nl) { /* we should force a broken line here */ 1116 flushed_nl = false; 1117 dump_line(); 1118 ps.want_blank = false; /* dont insert blank at line start */ 1119 force_nl = false; 1120 } 1121 pr_comment(); 1122 break; 1123 } /* end of big switch stmt */ 1124 1125 *e_code = '\0'; /* make sure code section is null terminated */ 1126 if (type_code != comment && type_code != newline && type_code != preesc) 1127 ps.last_token = type_code; 1128 } /* end of main while (1) loop */ 1129 } 1130 1131 /* 1132 * copy input file to backup file if in_name is /blah/blah/blah/file, then 1133 * backup file will be ".Bfile" then make the backup file the input and 1134 * original input file the output 1135 */ 1136 bakcopy() 1137 { 1138 int n, 1139 bakchn; 1140 char buff[8 * 1024]; 1141 register char *p; 1142 1143 /* construct file name .Bfile */ 1144 for (p = in_name; *p; p++); /* skip to end of string */ 1145 while (p > in_name && *p != '/') /* find last '/' */ 1146 p--; 1147 if (*p == '/') 1148 p++; 1149 sprintf(bakfile, "%s.BAK", p); 1150 1151 /* copy in_name to backup file */ 1152 bakchn = creat(bakfile, 0600); 1153 if (bakchn < 0) 1154 err(bakfile); 1155 while (n = read(fileno(input), buff, sizeof buff)) 1156 if (write(bakchn, buff, n) != n) 1157 err(bakfile); 1158 if (n < 0) 1159 err(in_name); 1160 close(bakchn); 1161 fclose(input); 1162 1163 /* re-open backup file as the input file */ 1164 input = fopen(bakfile, "r"); 1165 if (input == 0) 1166 err(bakfile); 1167 /* now the original input file will be the output */ 1168 output = fopen(in_name, "w"); 1169 if (output == 0) { 1170 unlink(bakfile); 1171 err(in_name); 1172 } 1173 } 1174 1175 err(msg) 1176 char *msg; 1177 { 1178 (void)fprintf(stderr, "indent: %s: %s\n", msg, strerror(errno)); 1179 exit(1); 1180 } 1181