1 /* $NetBSD: indent.c,v 1.27 2020/04/23 00:17:34 joerg Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 1985 Sun Microsystems, Inc. 7 * Copyright (c) 1976 Board of Trustees of the University of Illinois. 8 * Copyright (c) 1980, 1993 9 * The Regents of the University of California. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 #ifndef lint 48 #if defined(__NetBSD__) 49 __RCSID("$NetBSD: indent.c,v 1.27 2020/04/23 00:17:34 joerg Exp $"); 50 #elif defined(__FreeBSD__) 51 __FBSDID("$FreeBSD: head/usr.bin/indent/indent.c 340138 2018-11-04 19:24:49Z oshogbo $"); 52 #endif 53 #endif 54 55 #include <sys/param.h> 56 #if HAVE_CAPSICUM 57 #include <sys/capsicum.h> 58 #include <capsicum_helpers.h> 59 #endif 60 #include <err.h> 61 #include <errno.h> 62 #include <fcntl.h> 63 #include <unistd.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <ctype.h> 68 #include "indent_globs.h" 69 #include "indent_codes.h" 70 #include "indent.h" 71 72 struct options opt; 73 struct parser_state ps; 74 75 char *labbuf; 76 char *s_lab; 77 char *e_lab; 78 char *l_lab; 79 80 char *codebuf; 81 char *s_code; 82 char *e_code; 83 char *l_code; 84 85 char *combuf; 86 char *s_com; 87 char *e_com; 88 char *l_com; 89 90 char *tokenbuf; 91 char *s_token; 92 char *e_token; 93 char *l_token; 94 95 char *in_buffer; 96 char *in_buffer_limit; 97 char *buf_ptr; 98 char *buf_end; 99 100 char sc_buf[sc_size]; 101 char *save_com; 102 char *sc_end; 103 104 char *bp_save; 105 char *be_save; 106 107 int found_err; 108 int n_real_blanklines; 109 int prefix_blankline_requested; 110 int postfix_blankline_requested; 111 int break_comma; 112 float case_ind; 113 int code_lines; 114 int had_eof; 115 int line_no; 116 int inhibit_formatting; 117 int suppress_blanklines; 118 119 int ifdef_level; 120 struct parser_state state_stack[5]; 121 struct parser_state match_state[5]; 122 123 FILE *input; 124 FILE *output; 125 126 static void bakcopy(void); 127 static void indent_declaration(int, int); 128 129 const char *in_name = "Standard Input"; /* will always point to name of input 130 * file */ 131 const char *out_name = "Standard Output"; /* will always point to name 132 * of output file */ 133 const char *simple_backup_suffix = ".BAK"; /* Suffix to use for backup 134 * files */ 135 char bakfile[MAXPATHLEN] = ""; 136 137 int 138 main(int argc, char **argv) 139 { 140 #if HAVE_CAPSICUM 141 cap_rights_t rights; 142 #endif 143 144 int dec_ind; /* current indentation for declarations */ 145 int di_stack[20]; /* a stack of structure indentation levels */ 146 int force_nl; /* when true, code must be broken */ 147 int hd_type = 0; /* used to store type of stmt for if (...), 148 * for (...), etc */ 149 int i; /* local loop counter */ 150 int scase; /* set to true when we see a case, so we will 151 * know what to do with the following colon */ 152 int sp_sw; /* when true, we are in the expression of 153 * if(...), while(...), etc. */ 154 int squest; /* when this is positive, we have seen a ? 155 * without the matching : in a <c>?<s>:<s> 156 * construct */ 157 const char *t_ptr; /* used for copying tokens */ 158 int tabs_to_var; /* true if using tabs to indent to var name */ 159 int type_code; /* the type of token, returned by lexi */ 160 161 int last_else = 0; /* true iff last keyword was an else */ 162 const char *profile_name = NULL; 163 const char *envval = NULL; 164 struct parser_state transient_state; /* a copy for lookup */ 165 166 /*-----------------------------------------------*\ 167 | INITIALIZATION | 168 \*-----------------------------------------------*/ 169 170 found_err = 0; 171 172 ps.p_stack[0] = stmt; /* this is the parser's stack */ 173 ps.last_nl = true; /* this is true if the last thing scanned was 174 * a newline */ 175 ps.last_token = semicolon; 176 combuf = (char *) malloc(bufsize); 177 if (combuf == NULL) 178 err(1, NULL); 179 labbuf = (char *) malloc(bufsize); 180 if (labbuf == NULL) 181 err(1, NULL); 182 codebuf = (char *) malloc(bufsize); 183 if (codebuf == NULL) 184 err(1, NULL); 185 tokenbuf = (char *) malloc(bufsize); 186 if (tokenbuf == NULL) 187 err(1, NULL); 188 alloc_typenames(); 189 init_constant_tt(); 190 l_com = combuf + bufsize - 5; 191 l_lab = labbuf + bufsize - 5; 192 l_code = codebuf + bufsize - 5; 193 l_token = tokenbuf + bufsize - 5; 194 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and 195 * comment buffers */ 196 combuf[1] = codebuf[1] = labbuf[1] = '\0'; 197 opt.else_if = 1; /* Default else-if special processing to on */ 198 s_lab = e_lab = labbuf + 1; 199 s_code = e_code = codebuf + 1; 200 s_com = e_com = combuf + 1; 201 s_token = e_token = tokenbuf + 1; 202 203 in_buffer = (char *) malloc(10); 204 if (in_buffer == NULL) 205 err(1, NULL); 206 in_buffer_limit = in_buffer + 8; 207 buf_ptr = buf_end = in_buffer; 208 line_no = 1; 209 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false; 210 sp_sw = force_nl = false; 211 ps.in_or_st = false; 212 ps.bl_line = true; 213 dec_ind = 0; 214 di_stack[ps.dec_nest = 0] = 0; 215 ps.want_blank = ps.in_stmt = ps.ind_stmt = false; 216 217 scase = ps.pcase = false; 218 squest = 0; 219 sc_end = NULL; 220 bp_save = NULL; 221 be_save = NULL; 222 223 output = NULL; 224 tabs_to_var = 0; 225 226 envval = getenv("SIMPLE_BACKUP_SUFFIX"); 227 if (envval) 228 simple_backup_suffix = envval; 229 230 /*--------------------------------------------------*\ 231 | COMMAND LINE SCAN | 232 \*--------------------------------------------------*/ 233 234 #ifdef undef 235 max_col = 78; /* -l78 */ 236 lineup_to_parens = 1; /* -lp */ 237 lineup_to_parens_always = 0; /* -nlpl */ 238 ps.ljust_decl = 0; /* -ndj */ 239 ps.com_ind = 33; /* -c33 */ 240 star_comment_cont = 1; /* -sc */ 241 ps.ind_size = 8; /* -i8 */ 242 verbose = 0; 243 ps.decl_indent = 16; /* -di16 */ 244 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value 245 * by an arg, we will set this equal to 246 * ps.decl_ind */ 247 ps.indent_parameters = 1; /* -ip */ 248 ps.decl_com_ind = 0; /* if this is not set to some positive value 249 * by an arg, we will set this equal to 250 * ps.com_ind */ 251 btype_2 = 1; /* -br */ 252 cuddle_else = 1; /* -ce */ 253 ps.unindent_displace = 0; /* -d0 */ 254 ps.case_indent = 0; /* -cli0 */ 255 format_block_comments = 1; /* -fcb */ 256 format_col1_comments = 1; /* -fc1 */ 257 procnames_start_line = 1; /* -psl */ 258 proc_calls_space = 0; /* -npcs */ 259 comment_delimiter_on_blankline = 1; /* -cdb */ 260 ps.leave_comma = 1; /* -nbc */ 261 #endif 262 263 for (i = 1; i < argc; ++i) 264 if (strcmp(argv[i], "-npro") == 0) 265 break; 266 else if (argv[i][0] == '-' && argv[i][1] == 'P' && argv[i][2] != '\0') 267 profile_name = argv[i]; /* non-empty -P (set profile) */ 268 set_defaults(); 269 if (i >= argc) 270 set_profile(profile_name); 271 272 for (i = 1; i < argc; ++i) { 273 274 /* 275 * look thru args (if any) for changes to defaults 276 */ 277 if (argv[i][0] != '-') {/* no flag on parameter */ 278 if (input == NULL) { /* we must have the input file */ 279 in_name = argv[i]; /* remember name of input file */ 280 input = fopen(in_name, "r"); 281 if (input == NULL) /* check for open error */ 282 err(1, "%s", in_name); 283 continue; 284 } 285 else if (output == NULL) { /* we have the output file */ 286 out_name = argv[i]; /* remember name of output file */ 287 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite 288 * the file */ 289 errx(1, "input and output files must be different"); 290 } 291 output = fopen(out_name, "w"); 292 if (output == NULL) /* check for create error */ 293 err(1, "%s", out_name); 294 continue; 295 } 296 errx(1, "unknown parameter: %s", argv[i]); 297 } 298 else 299 set_option(argv[i]); 300 } /* end of for */ 301 if (input == NULL) 302 input = stdin; 303 if (output == NULL) { 304 if (input == stdin) 305 output = stdout; 306 else { 307 out_name = in_name; 308 bakcopy(); 309 } 310 } 311 312 #if HAVE_CAPSICUM 313 /* Restrict input/output descriptors and enter Capsicum sandbox. */ 314 cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE); 315 if (caph_rights_limit(fileno(output), &rights) < 0) 316 err(EXIT_FAILURE, "unable to limit rights for %s", out_name); 317 cap_rights_init(&rights, CAP_FSTAT, CAP_READ); 318 if (caph_rights_limit(fileno(input), &rights) < 0) 319 err(EXIT_FAILURE, "unable to limit rights for %s", in_name); 320 if (caph_enter() < 0) 321 err(EXIT_FAILURE, "unable to enter capability mode"); 322 #endif 323 324 if (opt.com_ind <= 1) 325 opt.com_ind = 2; /* don't put normal comments before column 2 */ 326 if (opt.block_comment_max_col <= 0) 327 opt.block_comment_max_col = opt.max_col; 328 if (opt.local_decl_indent < 0) /* if not specified by user, set this */ 329 opt.local_decl_indent = opt.decl_indent; 330 if (opt.decl_com_ind <= 0) /* if not specified by user, set this */ 331 opt.decl_com_ind = opt.ljust_decl ? (opt.com_ind <= 10 ? 2 : opt.com_ind - 8) : opt.com_ind; 332 if (opt.continuation_indent == 0) 333 opt.continuation_indent = opt.ind_size; 334 fill_buffer(); /* get first batch of stuff into input buffer */ 335 336 parse(semicolon); 337 { 338 char *p = buf_ptr; 339 int col = 1; 340 341 while (1) { 342 if (*p == ' ') 343 col++; 344 else if (*p == '\t') 345 col = opt.tabsize * (1 + (col - 1) / opt.tabsize) + 1; 346 else 347 break; 348 p++; 349 } 350 if (col > opt.ind_size) 351 ps.ind_level = ps.i_l_follow = col / opt.ind_size; 352 } 353 354 /* 355 * START OF MAIN LOOP 356 */ 357 358 while (1) { /* this is the main loop. it will go until we 359 * reach eof */ 360 int comment_buffered = false; 361 362 type_code = lexi(&ps); /* lexi reads one token. The actual 363 * characters read are stored in "token". lexi 364 * returns a code indicating the type of token */ 365 366 /* 367 * The following code moves newlines and comments following an if (), 368 * while (), else, etc. up to the start of the following stmt to 369 * a buffer. This allows proper handling of both kinds of brace 370 * placement (-br, -bl) and cuddling "else" (-ce). 371 */ 372 373 while (ps.search_brace) { 374 switch (type_code) { 375 case newline: 376 if (sc_end == NULL) { 377 save_com = sc_buf; 378 save_com[0] = save_com[1] = ' '; 379 sc_end = &save_com[2]; 380 } 381 *sc_end++ = '\n'; 382 /* 383 * We may have inherited a force_nl == true from the previous 384 * token (like a semicolon). But once we know that a newline 385 * has been scanned in this loop, force_nl should be false. 386 * 387 * However, the force_nl == true must be preserved if newline 388 * is never scanned in this loop, so this assignment cannot be 389 * done earlier. 390 */ 391 force_nl = false; 392 case form_feed: 393 break; 394 case comment: 395 if (sc_end == NULL) { 396 /* 397 * Copy everything from the start of the line, because 398 * pr_comment() will use that to calculate original 399 * indentation of a boxed comment. 400 */ 401 memcpy(sc_buf, in_buffer, buf_ptr - in_buffer - 4); 402 save_com = sc_buf + (buf_ptr - in_buffer - 4); 403 save_com[0] = save_com[1] = ' '; 404 sc_end = &save_com[2]; 405 } 406 comment_buffered = true; 407 *sc_end++ = '/'; /* copy in start of comment */ 408 *sc_end++ = '*'; 409 for (;;) { /* loop until we get to the end of the comment */ 410 *sc_end = *buf_ptr++; 411 if (buf_ptr >= buf_end) 412 fill_buffer(); 413 if (*sc_end++ == '*' && *buf_ptr == '/') 414 break; /* we are at end of comment */ 415 if (sc_end >= &save_com[sc_size]) { /* check for temp buffer 416 * overflow */ 417 diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever"); 418 fflush(output); 419 exit(1); 420 } 421 } 422 *sc_end++ = '/'; /* add ending slash */ 423 if (++buf_ptr >= buf_end) /* get past / in buffer */ 424 fill_buffer(); 425 break; 426 case lbrace: 427 /* 428 * Put KNF-style lbraces before the buffered up tokens and 429 * jump out of this loop in order to avoid copying the token 430 * again under the default case of the switch below. 431 */ 432 if (sc_end != NULL && opt.btype_2) { 433 save_com[0] = '{'; 434 /* 435 * Originally the lbrace may have been alone on its own 436 * line, but it will be moved into "the else's line", so 437 * if there was a newline resulting from the "{" before, 438 * it must be scanned now and ignored. 439 */ 440 while (isspace((unsigned char)*buf_ptr)) { 441 if (++buf_ptr >= buf_end) 442 fill_buffer(); 443 if (*buf_ptr == '\n') 444 break; 445 } 446 goto sw_buffer; 447 } 448 /* FALLTHROUGH */ 449 default: /* it is the start of a normal statement */ 450 { 451 int remove_newlines; 452 453 remove_newlines = 454 /* "} else" */ 455 (type_code == sp_nparen && *token == 'e' && 456 e_code != s_code && e_code[-1] == '}') 457 /* "else if" */ 458 || (type_code == sp_paren && *token == 'i' && 459 last_else && opt.else_if); 460 if (remove_newlines) 461 force_nl = false; 462 if (sc_end == NULL) { /* ignore buffering if 463 * comment wasn't saved up */ 464 ps.search_brace = false; 465 goto check_type; 466 } 467 while (sc_end > save_com && isblank((unsigned char)sc_end[-1])) { 468 sc_end--; 469 } 470 if (opt.swallow_optional_blanklines || 471 (!comment_buffered && remove_newlines)) { 472 force_nl = !remove_newlines; 473 while (sc_end > save_com && sc_end[-1] == '\n') { 474 sc_end--; 475 } 476 } 477 if (force_nl) { /* if we should insert a nl here, put 478 * it into the buffer */ 479 force_nl = false; 480 --line_no; /* this will be re-increased when the 481 * newline is read from the buffer */ 482 *sc_end++ = '\n'; 483 *sc_end++ = ' '; 484 if (opt.verbose) /* print error msg if the line was 485 * not already broken */ 486 diag(0, "Line broken"); 487 } 488 for (t_ptr = token; *t_ptr; ++t_ptr) 489 *sc_end++ = *t_ptr; 490 491 sw_buffer: 492 ps.search_brace = false; /* stop looking for start of 493 * stmt */ 494 bp_save = buf_ptr; /* save current input buffer */ 495 be_save = buf_end; 496 buf_ptr = save_com; /* fix so that subsequent calls to 497 * lexi will take tokens out of 498 * save_com */ 499 *sc_end++ = ' ';/* add trailing blank, just in case */ 500 buf_end = sc_end; 501 sc_end = NULL; 502 break; 503 } 504 } /* end of switch */ 505 /* 506 * We must make this check, just in case there was an unexpected 507 * EOF. 508 */ 509 if (type_code != 0) { 510 /* 511 * The only intended purpose of calling lexi() below is to 512 * categorize the next token in order to decide whether to 513 * continue buffering forthcoming tokens. Once the buffering 514 * is over, lexi() will be called again elsewhere on all of 515 * the tokens - this time for normal processing. 516 * 517 * Calling it for this purpose is a bug, because lexi() also 518 * changes the parser state and discards leading whitespace, 519 * which is needed mostly for comment-related considerations. 520 * 521 * Work around the former problem by giving lexi() a copy of 522 * the current parser state and discard it if the call turned 523 * out to be just a look ahead. 524 * 525 * Work around the latter problem by copying all whitespace 526 * characters into the buffer so that the later lexi() call 527 * will read them. 528 */ 529 if (sc_end != NULL) { 530 while (*buf_ptr == ' ' || *buf_ptr == '\t') { 531 *sc_end++ = *buf_ptr++; 532 if (sc_end >= &save_com[sc_size]) { 533 errx(1, "input too long"); 534 } 535 } 536 if (buf_ptr >= buf_end) { 537 fill_buffer(); 538 } 539 } 540 transient_state = ps; 541 type_code = lexi(&transient_state); /* read another token */ 542 if (type_code != newline && type_code != form_feed && 543 type_code != comment && !transient_state.search_brace) { 544 ps = transient_state; 545 } 546 } 547 } /* end of while (search_brace) */ 548 last_else = 0; 549 check_type: 550 if (type_code == 0) { /* we got eof */ 551 if (s_lab != e_lab || s_code != e_code 552 || s_com != e_com) /* must dump end of line */ 553 dump_line(); 554 if (ps.tos > 1) /* check for balanced braces */ 555 diag(1, "Stuff missing from end of file"); 556 557 if (opt.verbose) { 558 printf("There were %d output lines and %d comments\n", 559 ps.out_lines, ps.out_coms); 560 printf("(Lines with comments)/(Lines with code): %6.3f\n", 561 (1.0 * ps.com_lines) / code_lines); 562 } 563 fflush(output); 564 exit(found_err); 565 } 566 if ( 567 (type_code != comment) && 568 (type_code != newline) && 569 (type_code != preesc) && 570 (type_code != form_feed)) { 571 if (force_nl && 572 (type_code != semicolon) && 573 (type_code != lbrace || !opt.btype_2)) { 574 /* we should force a broken line here */ 575 if (opt.verbose) 576 diag(0, "Line broken"); 577 dump_line(); 578 ps.want_blank = false; /* dont insert blank at line start */ 579 force_nl = false; 580 } 581 ps.in_stmt = true; /* turn on flag which causes an extra level of 582 * indentation. this is turned off by a ; or 583 * '}' */ 584 if (s_com != e_com) { /* the turkey has embedded a comment 585 * in a line. fix it */ 586 int len = e_com - s_com; 587 588 CHECK_SIZE_CODE(len + 3); 589 *e_code++ = ' '; 590 memcpy(e_code, s_com, len); 591 e_code += len; 592 *e_code++ = ' '; 593 *e_code = '\0'; /* null terminate code sect */ 594 ps.want_blank = false; 595 e_com = s_com; 596 } 597 } 598 else if (type_code != comment) /* preserve force_nl thru a comment */ 599 force_nl = false; /* cancel forced newline after newline, form 600 * feed, etc */ 601 602 603 604 /*-----------------------------------------------------*\ 605 | do switch on type of token scanned | 606 \*-----------------------------------------------------*/ 607 CHECK_SIZE_CODE(3); /* maximum number of increments of e_code 608 * before the next CHECK_SIZE_CODE or 609 * dump_line() is 2. After that there's the 610 * final increment for the null character. */ 611 switch (type_code) { /* now, decide what to do with the token */ 612 613 case form_feed: /* found a form feed in line */ 614 ps.use_ff = true; /* a form feed is treated much like a newline */ 615 dump_line(); 616 ps.want_blank = false; 617 break; 618 619 case newline: 620 if (ps.last_token != comma || ps.p_l_follow > 0 621 || !opt.leave_comma || ps.block_init || !break_comma || s_com != e_com) { 622 dump_line(); 623 ps.want_blank = false; 624 } 625 ++line_no; /* keep track of input line number */ 626 break; 627 628 case lparen: /* got a '(' or '[' */ 629 /* count parens to make Healy happy */ 630 if (++ps.p_l_follow == nitems(ps.paren_indents)) { 631 diag(0, "Reached internal limit of %zu unclosed parens", 632 nitems(ps.paren_indents)); 633 ps.p_l_follow--; 634 } 635 if (*token == '[') 636 /* not a function pointer declaration or a function call */; 637 else if (ps.in_decl && !ps.block_init && !ps.dumped_decl_indent && 638 ps.procname[0] == '\0' && ps.paren_level == 0) { 639 /* function pointer declarations */ 640 indent_declaration(dec_ind, tabs_to_var); 641 ps.dumped_decl_indent = true; 642 } 643 else if (ps.want_blank && 644 ((ps.last_token != ident && ps.last_token != funcname) || 645 opt.proc_calls_space || 646 /* offsetof (1) is never allowed a space; sizeof (2) gets 647 * one iff -bs; all other keywords (>2) always get a space 648 * before lparen */ 649 ps.keyword + opt.Bill_Shannon > 2)) 650 *e_code++ = ' '; 651 ps.want_blank = false; 652 *e_code++ = token[0]; 653 ps.paren_indents[ps.p_l_follow - 1] = count_spaces_until(1, s_code, e_code) - 1; 654 if (sp_sw && ps.p_l_follow == 1 && opt.extra_expression_indent 655 && ps.paren_indents[0] < 2 * opt.ind_size) 656 ps.paren_indents[0] = 2 * opt.ind_size; 657 if (ps.in_or_st && *token == '(' && ps.tos <= 2) { 658 /* 659 * this is a kluge to make sure that declarations will be 660 * aligned right if proc decl has an explicit type on it, i.e. 661 * "int a(x) {..." 662 */ 663 parse(semicolon); /* I said this was a kluge... */ 664 ps.in_or_st = false; /* turn off flag for structure decl or 665 * initialization */ 666 } 667 /* parenthesized type following sizeof or offsetof is not a cast */ 668 if (ps.keyword == 1 || ps.keyword == 2) 669 ps.not_cast_mask |= 1 << ps.p_l_follow; 670 break; 671 672 case rparen: /* got a ')' or ']' */ 673 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.not_cast_mask) { 674 ps.last_u_d = true; 675 ps.cast_mask &= (1 << ps.p_l_follow) - 1; 676 ps.want_blank = opt.space_after_cast; 677 } else 678 ps.want_blank = true; 679 ps.not_cast_mask &= (1 << ps.p_l_follow) - 1; 680 if (--ps.p_l_follow < 0) { 681 ps.p_l_follow = 0; 682 diag(0, "Extra %c", *token); 683 } 684 if (e_code == s_code) /* if the paren starts the line */ 685 ps.paren_level = ps.p_l_follow; /* then indent it */ 686 687 *e_code++ = token[0]; 688 689 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if 690 * (...), or some such */ 691 sp_sw = false; 692 force_nl = true;/* must force newline after if */ 693 ps.last_u_d = true; /* inform lexi that a following 694 * operator is unary */ 695 ps.in_stmt = false; /* dont use stmt continuation 696 * indentation */ 697 698 parse(hd_type); /* let parser worry about if, or whatever */ 699 } 700 ps.search_brace = opt.btype_2; /* this should ensure that 701 * constructs such as main(){...} 702 * and int[]{...} have their braces 703 * put in the right place */ 704 break; 705 706 case unary_op: /* this could be any unary operation */ 707 if (!ps.dumped_decl_indent && ps.in_decl && !ps.block_init && 708 ps.procname[0] == '\0' && ps.paren_level == 0) { 709 /* pointer declarations */ 710 711 /* 712 * if this is a unary op in a declaration, we should indent 713 * this token 714 */ 715 for (i = 0; token[i]; ++i) 716 /* find length of token */; 717 indent_declaration(dec_ind - i, tabs_to_var); 718 ps.dumped_decl_indent = true; 719 } 720 else if (ps.want_blank) 721 *e_code++ = ' '; 722 723 { 724 int len = e_token - s_token; 725 726 CHECK_SIZE_CODE(len); 727 memcpy(e_code, token, len); 728 e_code += len; 729 } 730 ps.want_blank = false; 731 break; 732 733 case binary_op: /* any binary operation */ 734 { 735 int len = e_token - s_token; 736 737 CHECK_SIZE_CODE(len + 1); 738 if (ps.want_blank) 739 *e_code++ = ' '; 740 memcpy(e_code, token, len); 741 e_code += len; 742 } 743 ps.want_blank = true; 744 break; 745 746 case postop: /* got a trailing ++ or -- */ 747 *e_code++ = token[0]; 748 *e_code++ = token[1]; 749 ps.want_blank = true; 750 break; 751 752 case question: /* got a ? */ 753 squest++; /* this will be used when a later colon 754 * appears so we can distinguish the 755 * <c>?<n>:<n> construct */ 756 if (ps.want_blank) 757 *e_code++ = ' '; 758 *e_code++ = '?'; 759 ps.want_blank = true; 760 break; 761 762 case casestmt: /* got word 'case' or 'default' */ 763 scase = true; /* so we can process the later colon properly */ 764 goto copy_id; 765 766 case colon: /* got a ':' */ 767 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ 768 --squest; 769 if (ps.want_blank) 770 *e_code++ = ' '; 771 *e_code++ = ':'; 772 ps.want_blank = true; 773 break; 774 } 775 if (ps.in_or_st) { 776 *e_code++ = ':'; 777 ps.want_blank = false; 778 break; 779 } 780 ps.in_stmt = false; /* seeing a label does not imply we are in a 781 * stmt */ 782 /* 783 * turn everything so far into a label 784 */ 785 { 786 int len = e_code - s_code; 787 788 CHECK_SIZE_LAB(len + 3); 789 memcpy(e_lab, s_code, len); 790 e_lab += len; 791 *e_lab++ = ':'; 792 *e_lab = '\0'; 793 e_code = s_code; 794 } 795 force_nl = ps.pcase = scase; /* ps.pcase will be used by 796 * dump_line to decide how to 797 * indent the label. force_nl 798 * will force a case n: to be 799 * on a line by itself */ 800 scase = false; 801 ps.want_blank = false; 802 break; 803 804 case semicolon: /* got a ';' */ 805 if (ps.dec_nest == 0) 806 ps.in_or_st = false;/* we are not in an initialization or 807 * structure declaration */ 808 scase = false; /* these will only need resetting in an error */ 809 squest = 0; 810 if (ps.last_token == rparen) 811 ps.in_parameter_declaration = 0; 812 ps.cast_mask = 0; 813 ps.not_cast_mask = 0; 814 ps.block_init = 0; 815 ps.block_init_level = 0; 816 ps.just_saw_decl--; 817 818 if (ps.in_decl && s_code == e_code && !ps.block_init && 819 !ps.dumped_decl_indent && ps.paren_level == 0) { 820 /* indent stray semicolons in declarations */ 821 indent_declaration(dec_ind - 1, tabs_to_var); 822 ps.dumped_decl_indent = true; 823 } 824 825 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level 826 * structure declaration, we 827 * arent any more */ 828 829 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) { 830 831 /* 832 * This should be true iff there were unbalanced parens in the 833 * stmt. It is a bit complicated, because the semicolon might 834 * be in a for stmt 835 */ 836 diag(1, "Unbalanced parens"); 837 ps.p_l_follow = 0; 838 if (sp_sw) { /* this is a check for an if, while, etc. with 839 * unbalanced parens */ 840 sp_sw = false; 841 parse(hd_type); /* dont lose the if, or whatever */ 842 } 843 } 844 *e_code++ = ';'; 845 ps.want_blank = true; 846 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the 847 * middle of a stmt */ 848 849 if (!sp_sw) { /* if not if for (;;) */ 850 parse(semicolon); /* let parser know about end of stmt */ 851 force_nl = true;/* force newline after an end of stmt */ 852 } 853 break; 854 855 case lbrace: /* got a '{' */ 856 ps.in_stmt = false; /* dont indent the {} */ 857 if (!ps.block_init) 858 force_nl = true;/* force other stuff on same line as '{' onto 859 * new line */ 860 else if (ps.block_init_level <= 0) 861 ps.block_init_level = 1; 862 else 863 ps.block_init_level++; 864 865 if (s_code != e_code && !ps.block_init) { 866 if (!opt.btype_2) { 867 dump_line(); 868 ps.want_blank = false; 869 } 870 else if (ps.in_parameter_declaration && !ps.in_or_st) { 871 ps.i_l_follow = 0; 872 if (opt.function_brace_split) { /* dump the line prior 873 * to the brace ... */ 874 dump_line(); 875 ps.want_blank = false; 876 } else /* add a space between the decl and brace */ 877 ps.want_blank = true; 878 } 879 } 880 if (ps.in_parameter_declaration) 881 prefix_blankline_requested = 0; 882 883 if (ps.p_l_follow > 0) { /* check for preceding unbalanced 884 * parens */ 885 diag(1, "Unbalanced parens"); 886 ps.p_l_follow = 0; 887 if (sp_sw) { /* check for unclosed if, for, etc. */ 888 sp_sw = false; 889 parse(hd_type); 890 ps.ind_level = ps.i_l_follow; 891 } 892 } 893 if (s_code == e_code) 894 ps.ind_stmt = false; /* dont put extra indentation on line 895 * with '{' */ 896 if (ps.in_decl && ps.in_or_st) { /* this is either a structure 897 * declaration or an init */ 898 di_stack[ps.dec_nest] = dec_ind; 899 if (++ps.dec_nest == nitems(di_stack)) { 900 diag(0, "Reached internal limit of %zu struct levels", 901 nitems(di_stack)); 902 ps.dec_nest--; 903 } 904 /* ? dec_ind = 0; */ 905 } 906 else { 907 ps.decl_on_line = false; /* we can't be in the middle of 908 * a declaration, so don't do 909 * special indentation of 910 * comments */ 911 if (opt.blanklines_after_declarations_at_proctop 912 && ps.in_parameter_declaration) 913 postfix_blankline_requested = 1; 914 ps.in_parameter_declaration = 0; 915 ps.in_decl = false; 916 } 917 dec_ind = 0; 918 parse(lbrace); /* let parser know about this */ 919 if (ps.want_blank) /* put a blank before '{' if '{' is not at 920 * start of line */ 921 *e_code++ = ' '; 922 ps.want_blank = false; 923 *e_code++ = '{'; 924 ps.just_saw_decl = 0; 925 break; 926 927 case rbrace: /* got a '}' */ 928 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be 929 * omitted in 930 * declarations */ 931 parse(semicolon); 932 if (ps.p_l_follow) {/* check for unclosed if, for, else. */ 933 diag(1, "Unbalanced parens"); 934 ps.p_l_follow = 0; 935 sp_sw = false; 936 } 937 ps.just_saw_decl = 0; 938 ps.block_init_level--; 939 if (s_code != e_code && !ps.block_init) { /* '}' must be first on 940 * line */ 941 if (opt.verbose) 942 diag(0, "Line broken"); 943 dump_line(); 944 } 945 *e_code++ = '}'; 946 ps.want_blank = true; 947 ps.in_stmt = ps.ind_stmt = false; 948 if (ps.dec_nest > 0) { /* we are in multi-level structure 949 * declaration */ 950 dec_ind = di_stack[--ps.dec_nest]; 951 if (ps.dec_nest == 0 && !ps.in_parameter_declaration) 952 ps.just_saw_decl = 2; 953 ps.in_decl = true; 954 } 955 prefix_blankline_requested = 0; 956 parse(rbrace); /* let parser know about this */ 957 ps.search_brace = opt.cuddle_else && ps.p_stack[ps.tos] == ifhead 958 && ps.il[ps.tos] >= ps.ind_level; 959 if (ps.tos <= 1 && opt.blanklines_after_procs && ps.dec_nest <= 0) 960 postfix_blankline_requested = 1; 961 break; 962 963 case swstmt: /* got keyword "switch" */ 964 sp_sw = true; 965 hd_type = swstmt; /* keep this for when we have seen the 966 * expression */ 967 goto copy_id; /* go move the token into buffer */ 968 969 case sp_paren: /* token is if, while, for */ 970 sp_sw = true; /* the interesting stuff is done after the 971 * expression is scanned */ 972 hd_type = (*token == 'i' ? ifstmt : 973 (*token == 'w' ? whilestmt : forstmt)); 974 975 /* 976 * remember the type of header for later use by parser 977 */ 978 goto copy_id; /* copy the token into line */ 979 980 case sp_nparen: /* got else, do */ 981 ps.in_stmt = false; 982 if (*token == 'e') { 983 if (e_code != s_code && (!opt.cuddle_else || e_code[-1] != '}')) { 984 if (opt.verbose) 985 diag(0, "Line broken"); 986 dump_line();/* make sure this starts a line */ 987 ps.want_blank = false; 988 } 989 force_nl = true;/* also, following stuff must go onto new line */ 990 last_else = 1; 991 parse(elselit); 992 } 993 else { 994 if (e_code != s_code) { /* make sure this starts a line */ 995 if (opt.verbose) 996 diag(0, "Line broken"); 997 dump_line(); 998 ps.want_blank = false; 999 } 1000 force_nl = true;/* also, following stuff must go onto new line */ 1001 last_else = 0; 1002 parse(dolit); 1003 } 1004 goto copy_id; /* move the token into line */ 1005 1006 case type_def: 1007 case storage: 1008 prefix_blankline_requested = 0; 1009 goto copy_id; 1010 1011 case structure: 1012 if (ps.p_l_follow > 0) 1013 goto copy_id; 1014 /* FALLTHROUGH */ 1015 case decl: /* we have a declaration type (int, etc.) */ 1016 parse(decl); /* let parser worry about indentation */ 1017 if (ps.last_token == rparen && ps.tos <= 1) { 1018 if (s_code != e_code) { 1019 dump_line(); 1020 ps.want_blank = 0; 1021 } 1022 } 1023 if (ps.in_parameter_declaration && opt.indent_parameters && ps.dec_nest == 0) { 1024 ps.ind_level = ps.i_l_follow = 1; 1025 ps.ind_stmt = 0; 1026 } 1027 ps.in_or_st = true; /* this might be a structure or initialization 1028 * declaration */ 1029 ps.in_decl = ps.decl_on_line = ps.last_token != type_def; 1030 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) 1031 ps.just_saw_decl = 2; 1032 prefix_blankline_requested = 0; 1033 for (i = 0; token[i++];); /* get length of token */ 1034 1035 if (ps.ind_level == 0 || ps.dec_nest > 0) { 1036 /* global variable or struct member in local variable */ 1037 dec_ind = opt.decl_indent > 0 ? opt.decl_indent : i; 1038 tabs_to_var = (opt.use_tabs ? opt.decl_indent > 0 : 0); 1039 } else { 1040 /* local variable */ 1041 dec_ind = opt.local_decl_indent > 0 ? opt.local_decl_indent : i; 1042 tabs_to_var = (opt.use_tabs ? opt.local_decl_indent > 0 : 0); 1043 } 1044 goto copy_id; 1045 1046 case funcname: 1047 case ident: /* got an identifier or constant */ 1048 if (ps.in_decl) { 1049 if (type_code == funcname) { 1050 ps.in_decl = false; 1051 if (opt.procnames_start_line && s_code != e_code) { 1052 *e_code = '\0'; 1053 dump_line(); 1054 } 1055 else if (ps.want_blank) { 1056 *e_code++ = ' '; 1057 } 1058 ps.want_blank = false; 1059 } 1060 else if (!ps.block_init && !ps.dumped_decl_indent && 1061 ps.paren_level == 0) { /* if we are in a declaration, we 1062 * must indent identifier */ 1063 indent_declaration(dec_ind, tabs_to_var); 1064 ps.dumped_decl_indent = true; 1065 ps.want_blank = false; 1066 } 1067 } 1068 else if (sp_sw && ps.p_l_follow == 0) { 1069 sp_sw = false; 1070 force_nl = true; 1071 ps.last_u_d = true; 1072 ps.in_stmt = false; 1073 parse(hd_type); 1074 } 1075 copy_id: 1076 { 1077 int len = e_token - s_token; 1078 1079 CHECK_SIZE_CODE(len + 1); 1080 if (ps.want_blank) 1081 *e_code++ = ' '; 1082 memcpy(e_code, s_token, len); 1083 e_code += len; 1084 } 1085 if (type_code != funcname) 1086 ps.want_blank = true; 1087 break; 1088 1089 case strpfx: 1090 { 1091 int len = e_token - s_token; 1092 1093 CHECK_SIZE_CODE(len + 1); 1094 if (ps.want_blank) 1095 *e_code++ = ' '; 1096 memcpy(e_code, token, len); 1097 e_code += len; 1098 } 1099 ps.want_blank = false; 1100 break; 1101 1102 case period: /* treat a period kind of like a binary 1103 * operation */ 1104 *e_code++ = '.'; /* move the period into line */ 1105 ps.want_blank = false; /* dont put a blank after a period */ 1106 break; 1107 1108 case comma: 1109 ps.want_blank = (s_code != e_code); /* only put blank after comma 1110 * if comma does not start the 1111 * line */ 1112 if (ps.in_decl && ps.procname[0] == '\0' && !ps.block_init && 1113 !ps.dumped_decl_indent && ps.paren_level == 0) { 1114 /* indent leading commas and not the actual identifiers */ 1115 indent_declaration(dec_ind - 1, tabs_to_var); 1116 ps.dumped_decl_indent = true; 1117 } 1118 *e_code++ = ','; 1119 if (ps.p_l_follow == 0) { 1120 if (ps.block_init_level <= 0) 1121 ps.block_init = 0; 1122 if (break_comma && (!opt.leave_comma || 1123 count_spaces_until(compute_code_target(), s_code, e_code) > 1124 opt.max_col - opt.tabsize)) 1125 force_nl = true; 1126 } 1127 break; 1128 1129 case preesc: /* got the character '#' */ 1130 if ((s_com != e_com) || 1131 (s_lab != e_lab) || 1132 (s_code != e_code)) 1133 dump_line(); 1134 CHECK_SIZE_LAB(1); 1135 *e_lab++ = '#'; /* move whole line to 'label' buffer */ 1136 { 1137 int in_comment = 0; 1138 int com_start = 0; 1139 char quote = 0; 1140 int com_end = 0; 1141 1142 while (*buf_ptr == ' ' || *buf_ptr == '\t') { 1143 buf_ptr++; 1144 if (buf_ptr >= buf_end) 1145 fill_buffer(); 1146 } 1147 while (*buf_ptr != '\n' || (in_comment && !had_eof)) { 1148 CHECK_SIZE_LAB(2); 1149 *e_lab = *buf_ptr++; 1150 if (buf_ptr >= buf_end) 1151 fill_buffer(); 1152 switch (*e_lab++) { 1153 case BACKSLASH: 1154 if (!in_comment) { 1155 *e_lab++ = *buf_ptr++; 1156 if (buf_ptr >= buf_end) 1157 fill_buffer(); 1158 } 1159 break; 1160 case '/': 1161 if (*buf_ptr == '*' && !in_comment && !quote) { 1162 in_comment = 1; 1163 *e_lab++ = *buf_ptr++; 1164 com_start = e_lab - s_lab - 2; 1165 } 1166 break; 1167 case '"': 1168 if (quote == '"') 1169 quote = 0; 1170 break; 1171 case '\'': 1172 if (quote == '\'') 1173 quote = 0; 1174 break; 1175 case '*': 1176 if (*buf_ptr == '/' && in_comment) { 1177 in_comment = 0; 1178 *e_lab++ = *buf_ptr++; 1179 com_end = e_lab - s_lab; 1180 } 1181 break; 1182 } 1183 } 1184 1185 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1186 e_lab--; 1187 if (e_lab - s_lab == com_end && bp_save == NULL) { 1188 /* comment on preprocessor line */ 1189 if (sc_end == NULL) { /* if this is the first comment, 1190 * we must set up the buffer */ 1191 save_com = sc_buf; 1192 sc_end = &save_com[0]; 1193 } 1194 else { 1195 *sc_end++ = '\n'; /* add newline between 1196 * comments */ 1197 *sc_end++ = ' '; 1198 --line_no; 1199 } 1200 if (sc_end - save_com + com_end - com_start > sc_size) 1201 errx(1, "input too long"); 1202 memmove(sc_end, s_lab + com_start, com_end - com_start); 1203 sc_end += com_end - com_start; 1204 e_lab = s_lab + com_start; 1205 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) 1206 e_lab--; 1207 bp_save = buf_ptr; /* save current input buffer */ 1208 be_save = buf_end; 1209 buf_ptr = save_com; /* fix so that subsequent calls to 1210 * lexi will take tokens out of 1211 * save_com */ 1212 *sc_end++ = ' '; /* add trailing blank, just in case */ 1213 buf_end = sc_end; 1214 sc_end = NULL; 1215 } 1216 CHECK_SIZE_LAB(1); 1217 *e_lab = '\0'; /* null terminate line */ 1218 ps.pcase = false; 1219 } 1220 1221 if (strncmp(s_lab, "#if", 3) == 0) { /* also ifdef, ifndef */ 1222 if ((size_t)ifdef_level < nitems(state_stack)) { 1223 match_state[ifdef_level].tos = -1; 1224 state_stack[ifdef_level++] = ps; 1225 } 1226 else 1227 diag(1, "#if stack overflow"); 1228 } 1229 else if (strncmp(s_lab, "#el", 3) == 0) { /* else, elif */ 1230 if (ifdef_level <= 0) 1231 diag(1, s_lab[3] == 'i' ? "Unmatched #elif" : "Unmatched #else"); 1232 else { 1233 match_state[ifdef_level - 1] = ps; 1234 ps = state_stack[ifdef_level - 1]; 1235 } 1236 } 1237 else if (strncmp(s_lab, "#endif", 6) == 0) { 1238 if (ifdef_level <= 0) 1239 diag(1, "Unmatched #endif"); 1240 else 1241 ifdef_level--; 1242 } else { 1243 struct directives { 1244 int size; 1245 const char *string; 1246 } 1247 recognized[] = { 1248 {7, "include"}, 1249 {6, "define"}, 1250 {5, "undef"}, 1251 {4, "line"}, 1252 {5, "error"}, 1253 {6, "pragma"} 1254 }; 1255 int d = nitems(recognized); 1256 while (--d >= 0) 1257 if (strncmp(s_lab + 1, recognized[d].string, recognized[d].size) == 0) 1258 break; 1259 if (d < 0) { 1260 diag(1, "Unrecognized cpp directive"); 1261 break; 1262 } 1263 } 1264 if (opt.blanklines_around_conditional_compilation) { 1265 postfix_blankline_requested++; 1266 n_real_blanklines = 0; 1267 } 1268 else { 1269 postfix_blankline_requested = 0; 1270 prefix_blankline_requested = 0; 1271 } 1272 break; /* subsequent processing of the newline 1273 * character will cause the line to be printed */ 1274 1275 case comment: /* we have gotten a / followed by * this is a biggie */ 1276 pr_comment(); 1277 break; 1278 } /* end of big switch stmt */ 1279 1280 *e_code = '\0'; /* make sure code section is null terminated */ 1281 if (type_code != comment && type_code != newline && type_code != preesc) 1282 ps.last_token = type_code; 1283 } /* end of main while (1) loop */ 1284 } 1285 1286 /* 1287 * copy input file to backup file if in_name is /blah/blah/blah/file, then 1288 * backup file will be ".Bfile" then make the backup file the input and 1289 * original input file the output 1290 */ 1291 static void 1292 bakcopy(void) 1293 { 1294 int n, 1295 bakchn; 1296 char buff[8 * 1024]; 1297 const char *p; 1298 1299 /* construct file name .Bfile */ 1300 for (p = in_name; *p; p++); /* skip to end of string */ 1301 while (p > in_name && *p != '/') /* find last '/' */ 1302 p--; 1303 if (*p == '/') 1304 p++; 1305 sprintf(bakfile, "%s%s", p, simple_backup_suffix); 1306 1307 /* copy in_name to backup file */ 1308 bakchn = creat(bakfile, 0600); 1309 if (bakchn < 0) 1310 err(1, "%s", bakfile); 1311 while ((n = read(fileno(input), buff, sizeof(buff))) > 0) 1312 if (write(bakchn, buff, n) != n) 1313 err(1, "%s", bakfile); 1314 if (n < 0) 1315 err(1, "%s", in_name); 1316 close(bakchn); 1317 fclose(input); 1318 1319 /* re-open backup file as the input file */ 1320 input = fopen(bakfile, "r"); 1321 if (input == NULL) 1322 err(1, "%s", bakfile); 1323 /* now the original input file will be the output */ 1324 output = fopen(in_name, "w"); 1325 if (output == NULL) { 1326 unlink(bakfile); 1327 err(1, "%s", in_name); 1328 } 1329 } 1330 1331 static void 1332 indent_declaration(int cur_dec_ind, int tabs_to_var) 1333 { 1334 int pos = e_code - s_code; 1335 char *startpos = e_code; 1336 1337 /* 1338 * get the tab math right for indentations that are not multiples of tabsize 1339 */ 1340 if ((ps.ind_level * opt.ind_size) % opt.tabsize != 0) { 1341 pos += (ps.ind_level * opt.ind_size) % opt.tabsize; 1342 cur_dec_ind += (ps.ind_level * opt.ind_size) % opt.tabsize; 1343 } 1344 if (tabs_to_var) { 1345 int tpos; 1346 1347 CHECK_SIZE_CODE(cur_dec_ind / opt.tabsize); 1348 while ((tpos = opt.tabsize * (1 + pos / opt.tabsize)) <= cur_dec_ind) { 1349 *e_code++ = '\t'; 1350 pos = tpos; 1351 } 1352 } 1353 CHECK_SIZE_CODE(cur_dec_ind - pos + 1); 1354 while (pos < cur_dec_ind) { 1355 *e_code++ = ' '; 1356 pos++; 1357 } 1358 if (e_code == startpos && ps.want_blank) { 1359 *e_code++ = ' '; 1360 ps.want_blank = false; 1361 } 1362 } 1363