Annotation of src/usr.bin/indent/indent.c, Revision 1.1
1.1 ! deraadt 1: /*
! 2: * Copyright (c) 1985 Sun Microsystems, Inc.
! 3: * Copyright (c) 1980 The Regents of the University of California.
! 4: * Copyright (c) 1976 Board of Trustees of the University of Illinois.
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: char copyright[] =
! 38: "@(#) Copyright (c) 1985 Sun Microsystems, Inc.\n\
! 39: @(#) Copyright (c) 1980 The Regents of the University of California.\n\
! 40: @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.\n\
! 41: All rights reserved.\n";
! 42: #endif /* not lint */
! 43:
! 44: #ifndef lint
! 45: /*static char sccsid[] = "from: @(#)indent.c 5.16 (Berkeley) 2/26/91";*/
! 46: static char rcsid[] = "$Id: indent.c,v 1.2 1993/08/01 18:14:33 mycroft Exp $";
! 47: #endif /* not lint */
! 48:
! 49: #include <sys/param.h>
! 50: #include <fcntl.h>
! 51: #include <unistd.h>
! 52: #include <stdio.h>
! 53: #include <stdlib.h>
! 54: #include <string.h>
! 55: #include "indent_globs.h"
! 56: #include "indent_codes.h"
! 57: #include <ctype.h>
! 58:
! 59: char *in_name = "Standard Input"; /* will always point to name of input
! 60: * file */
! 61: char *out_name = "Standard Output"; /* will always point to name
! 62: * of output file */
! 63: char bakfile[MAXPATHLEN] = "";
! 64:
! 65: main(argc, argv)
! 66: int argc;
! 67: char **argv;
! 68: {
! 69:
! 70: extern int found_err; /* flag set in diag() on error */
! 71: int dec_ind; /* current indentation for declarations */
! 72: int di_stack[20]; /* a stack of structure indentation levels */
! 73: int flushed_nl; /* used when buffering up comments to remember
! 74: * that a newline was passed over */
! 75: int force_nl; /* when true, code must be broken */
! 76: int hd_type; /* used to store type of stmt for if (...),
! 77: * for (...), etc */
! 78: register int i; /* local loop counter */
! 79: int scase; /* set to true when we see a case, so we will
! 80: * know what to do with the following colon */
! 81: int sp_sw; /* when true, we are in the expressin of
! 82: * if(...), while(...), etc. */
! 83: int squest; /* when this is positive, we have seen a ?
! 84: * without the matching : in a <c>?<s>:<s>
! 85: * construct */
! 86: register char *t_ptr; /* used for copying tokens */
! 87: int type_code; /* the type of token, returned by lexi */
! 88:
! 89: int last_else = 0; /* true iff last keyword was an else */
! 90:
! 91:
! 92: /*-----------------------------------------------*\
! 93: | INITIALIZATION |
! 94: \*-----------------------------------------------*/
! 95:
! 96:
! 97: ps.p_stack[0] = stmt; /* this is the parser's stack */
! 98: ps.last_nl = true; /* this is true if the last thing scanned was
! 99: * a newline */
! 100: ps.last_token = semicolon;
! 101: combuf = (char *) malloc(bufsize);
! 102: labbuf = (char *) malloc(bufsize);
! 103: codebuf = (char *) malloc(bufsize);
! 104: tokenbuf = (char *) malloc(bufsize);
! 105: l_com = combuf + bufsize - 5;
! 106: l_lab = labbuf + bufsize - 5;
! 107: l_code = codebuf + bufsize - 5;
! 108: l_token = tokenbuf + bufsize - 5;
! 109: combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
! 110: * comment buffers */
! 111: combuf[1] = codebuf[1] = labbuf[1] = '\0';
! 112: ps.else_if = 1; /* Default else-if special processing to on */
! 113: s_lab = e_lab = labbuf + 1;
! 114: s_code = e_code = codebuf + 1;
! 115: s_com = e_com = combuf + 1;
! 116: s_token = e_token = tokenbuf + 1;
! 117:
! 118: in_buffer = (char *) malloc(10);
! 119: in_buffer_limit = in_buffer + 8;
! 120: buf_ptr = buf_end = in_buffer;
! 121: line_no = 1;
! 122: had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
! 123: sp_sw = force_nl = false;
! 124: ps.in_or_st = false;
! 125: ps.bl_line = true;
! 126: dec_ind = 0;
! 127: di_stack[ps.dec_nest = 0] = 0;
! 128: ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
! 129:
! 130:
! 131: scase = ps.pcase = false;
! 132: squest = 0;
! 133: sc_end = 0;
! 134: bp_save = 0;
! 135: be_save = 0;
! 136:
! 137: output = 0;
! 138:
! 139:
! 140:
! 141: /*--------------------------------------------------*\
! 142: | COMMAND LINE SCAN |
! 143: \*--------------------------------------------------*/
! 144:
! 145: #ifdef undef
! 146: max_col = 78; /* -l78 */
! 147: lineup_to_parens = 1; /* -lp */
! 148: ps.ljust_decl = 0; /* -ndj */
! 149: ps.com_ind = 33; /* -c33 */
! 150: star_comment_cont = 1; /* -sc */
! 151: ps.ind_size = 8; /* -i8 */
! 152: verbose = 0;
! 153: ps.decl_indent = 16; /* -di16 */
! 154: ps.indent_parameters = 1; /* -ip */
! 155: ps.decl_com_ind = 0; /* if this is not set to some positive value
! 156: * by an arg, we will set this equal to
! 157: * ps.com_ind */
! 158: btype_2 = 1; /* -br */
! 159: cuddle_else = 1; /* -ce */
! 160: ps.unindent_displace = 0; /* -d0 */
! 161: ps.case_indent = 0; /* -cli0 */
! 162: format_col1_comments = 1; /* -fc1 */
! 163: procnames_start_line = 1; /* -psl */
! 164: proc_calls_space = 0; /* -npcs */
! 165: comment_delimiter_on_blankline = 1; /* -cdb */
! 166: ps.leave_comma = 1; /* -nbc */
! 167: #endif
! 168:
! 169: for (i = 1; i < argc; ++i)
! 170: if (strcmp(argv[i], "-npro") == 0)
! 171: break;
! 172: set_defaults();
! 173: if (i >= argc)
! 174: set_profile();
! 175:
! 176: for (i = 1; i < argc; ++i) {
! 177:
! 178: /*
! 179: * look thru args (if any) for changes to defaults
! 180: */
! 181: if (argv[i][0] != '-') {/* no flag on parameter */
! 182: if (input == 0) { /* we must have the input file */
! 183: in_name = argv[i]; /* remember name of input file */
! 184: input = fopen(in_name, "r");
! 185: if (input == 0) /* check for open error */
! 186: err(in_name);
! 187: continue;
! 188: }
! 189: else if (output == 0) { /* we have the output file */
! 190: out_name = argv[i]; /* remember name of output file */
! 191: if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
! 192: * the file */
! 193: fprintf(stderr, "indent: input and output files must be different\n");
! 194: exit(1);
! 195: }
! 196: output = fopen(out_name, "w");
! 197: if (output == 0) /* check for create error */
! 198: err(out_name);
! 199: continue;
! 200: }
! 201: fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]);
! 202: exit(1);
! 203: }
! 204: else
! 205: set_option(argv[i]);
! 206: } /* end of for */
! 207: if (input == 0) {
! 208: fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n");
! 209: exit(1);
! 210: }
! 211: if (output == 0)
! 212: if (troff)
! 213: output = stdout;
! 214: else {
! 215: out_name = in_name;
! 216: bakcopy();
! 217: }
! 218: if (ps.com_ind <= 1)
! 219: ps.com_ind = 2; /* dont put normal comments before column 2 */
! 220: if (troff) {
! 221: if (bodyf.font[0] == 0)
! 222: parsefont(&bodyf, "R");
! 223: if (scomf.font[0] == 0)
! 224: parsefont(&scomf, "I");
! 225: if (blkcomf.font[0] == 0)
! 226: blkcomf = scomf, blkcomf.size += 2;
! 227: if (boxcomf.font[0] == 0)
! 228: boxcomf = blkcomf;
! 229: if (stringf.font[0] == 0)
! 230: parsefont(&stringf, "L");
! 231: if (keywordf.font[0] == 0)
! 232: parsefont(&keywordf, "B");
! 233: writefdef(&bodyf, 'B');
! 234: writefdef(&scomf, 'C');
! 235: writefdef(&blkcomf, 'L');
! 236: writefdef(&boxcomf, 'X');
! 237: writefdef(&stringf, 'S');
! 238: writefdef(&keywordf, 'K');
! 239: }
! 240: if (block_comment_max_col <= 0)
! 241: block_comment_max_col = max_col;
! 242: if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
! 243: ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
! 244: if (continuation_indent == 0)
! 245: continuation_indent = ps.ind_size;
! 246: fill_buffer(); /* get first batch of stuff into input buffer */
! 247:
! 248: parse(semicolon);
! 249: {
! 250: register char *p = buf_ptr;
! 251: register col = 1;
! 252:
! 253: while (1) {
! 254: if (*p == ' ')
! 255: col++;
! 256: else if (*p == '\t')
! 257: col = ((col - 1) & ~7) + 9;
! 258: else
! 259: break;
! 260: p++;
! 261: }
! 262: if (col > ps.ind_size)
! 263: ps.ind_level = ps.i_l_follow = col / ps.ind_size;
! 264: }
! 265: if (troff) {
! 266: register char *p = in_name,
! 267: *beg = in_name;
! 268:
! 269: while (*p)
! 270: if (*p++ == '/')
! 271: beg = p;
! 272: fprintf(output, ".Fn \"%s\"\n", beg);
! 273: }
! 274: /*
! 275: * START OF MAIN LOOP
! 276: */
! 277:
! 278: while (1) { /* this is the main loop. it will go until we
! 279: * reach eof */
! 280: int is_procname;
! 281:
! 282: type_code = lexi(); /* lexi reads one token. The actual
! 283: * characters read are stored in "token". lexi
! 284: * returns a code indicating the type of token */
! 285: is_procname = ps.procname[0];
! 286:
! 287: /*
! 288: * The following code moves everything following an if (), while (),
! 289: * else, etc. up to the start of the following stmt to a buffer. This
! 290: * allows proper handling of both kinds of brace placement.
! 291: */
! 292:
! 293: flushed_nl = false;
! 294: while (ps.search_brace) { /* if we scanned an if(), while(),
! 295: * etc., we might need to copy stuff
! 296: * into a buffer we must loop, copying
! 297: * stuff into save_com, until we find
! 298: * the start of the stmt which follows
! 299: * the if, or whatever */
! 300: switch (type_code) {
! 301: case newline:
! 302: ++line_no;
! 303: flushed_nl = true;
! 304: case form_feed:
! 305: break; /* form feeds and newlines found here will be
! 306: * ignored */
! 307:
! 308: case lbrace: /* this is a brace that starts the compound
! 309: * stmt */
! 310: if (sc_end == 0) { /* ignore buffering if a comment wasnt
! 311: * stored up */
! 312: ps.search_brace = false;
! 313: goto check_type;
! 314: }
! 315: if (btype_2) {
! 316: save_com[0] = '{'; /* we either want to put the brace
! 317: * right after the if */
! 318: goto sw_buffer; /* go to common code to get out of
! 319: * this loop */
! 320: }
! 321: case comment: /* we have a comment, so we must copy it into
! 322: * the buffer */
! 323: if (!flushed_nl || sc_end != 0) {
! 324: if (sc_end == 0) { /* if this is the first comment, we
! 325: * must set up the buffer */
! 326: save_com[0] = save_com[1] = ' ';
! 327: sc_end = &(save_com[2]);
! 328: }
! 329: else {
! 330: *sc_end++ = '\n'; /* add newline between
! 331: * comments */
! 332: *sc_end++ = ' ';
! 333: --line_no;
! 334: }
! 335: *sc_end++ = '/'; /* copy in start of comment */
! 336: *sc_end++ = '*';
! 337:
! 338: for (;;) { /* loop until we get to the end of the comment */
! 339: *sc_end = *buf_ptr++;
! 340: if (buf_ptr >= buf_end)
! 341: fill_buffer();
! 342:
! 343: if (*sc_end++ == '*' && *buf_ptr == '/')
! 344: break; /* we are at end of comment */
! 345:
! 346: if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
! 347: * overflow */
! 348: diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
! 349: fflush(output);
! 350: exit(1);
! 351: }
! 352: }
! 353: *sc_end++ = '/'; /* add ending slash */
! 354: if (++buf_ptr >= buf_end) /* get past / in buffer */
! 355: fill_buffer();
! 356: break;
! 357: }
! 358: default: /* it is the start of a normal statment */
! 359: if (flushed_nl) /* if we flushed a newline, make sure it is
! 360: * put back */
! 361: force_nl = true;
! 362: if (type_code == sp_paren && *token == 'i'
! 363: && last_else && ps.else_if
! 364: || type_code == sp_nparen && *token == 'e'
! 365: && e_code != s_code && e_code[-1] == '}')
! 366: force_nl = false;
! 367:
! 368: if (sc_end == 0) { /* ignore buffering if comment wasnt
! 369: * saved up */
! 370: ps.search_brace = false;
! 371: goto check_type;
! 372: }
! 373: if (force_nl) { /* if we should insert a nl here, put it into
! 374: * the buffer */
! 375: force_nl = false;
! 376: --line_no; /* this will be re-increased when the nl is
! 377: * read from the buffer */
! 378: *sc_end++ = '\n';
! 379: *sc_end++ = ' ';
! 380: if (verbose && !flushed_nl) /* print error msg if the line
! 381: * was not already broken */
! 382: diag(0, "Line broken");
! 383: flushed_nl = false;
! 384: }
! 385: for (t_ptr = token; *t_ptr; ++t_ptr)
! 386: *sc_end++ = *t_ptr; /* copy token into temp buffer */
! 387: ps.procname[0] = 0;
! 388:
! 389: sw_buffer:
! 390: ps.search_brace = false; /* stop looking for start of
! 391: * stmt */
! 392: bp_save = buf_ptr; /* save current input buffer */
! 393: be_save = buf_end;
! 394: buf_ptr = save_com; /* fix so that subsequent calls to
! 395: * lexi will take tokens out of
! 396: * save_com */
! 397: *sc_end++ = ' ';/* add trailing blank, just in case */
! 398: buf_end = sc_end;
! 399: sc_end = 0;
! 400: break;
! 401: } /* end of switch */
! 402: if (type_code != 0) /* we must make this check, just in case there
! 403: * was an unexpected EOF */
! 404: type_code = lexi(); /* read another token */
! 405: /* if (ps.search_brace) ps.procname[0] = 0; */
! 406: if ((is_procname = ps.procname[0]) && flushed_nl
! 407: && !procnames_start_line && ps.in_decl
! 408: && type_code == ident)
! 409: flushed_nl = 0;
! 410: } /* end of while (search_brace) */
! 411: last_else = 0;
! 412: check_type:
! 413: if (type_code == 0) { /* we got eof */
! 414: if (s_lab != e_lab || s_code != e_code
! 415: || s_com != e_com) /* must dump end of line */
! 416: dump_line();
! 417: if (ps.tos > 1) /* check for balanced braces */
! 418: diag(1, "Stuff missing from end of file.");
! 419:
! 420: if (verbose) {
! 421: printf("There were %d output lines and %d comments\n",
! 422: ps.out_lines, ps.out_coms);
! 423: printf("(Lines with comments)/(Lines with code): %6.3f\n",
! 424: (1.0 * ps.com_lines) / code_lines);
! 425: }
! 426: fflush(output);
! 427: exit(found_err);
! 428: }
! 429: if (
! 430: (type_code != comment) &&
! 431: (type_code != newline) &&
! 432: (type_code != preesc) &&
! 433: (type_code != form_feed)) {
! 434: if (force_nl &&
! 435: (type_code != semicolon) &&
! 436: (type_code != lbrace || !btype_2)) {
! 437: /* we should force a broken line here */
! 438: if (verbose && !flushed_nl)
! 439: diag(0, "Line broken");
! 440: flushed_nl = false;
! 441: dump_line();
! 442: ps.want_blank = false; /* dont insert blank at line start */
! 443: force_nl = false;
! 444: }
! 445: ps.in_stmt = true; /* turn on flag which causes an extra level of
! 446: * indentation. this is turned off by a ; or
! 447: * '}' */
! 448: if (s_com != e_com) { /* the turkey has embedded a comment
! 449: * in a line. fix it */
! 450: *e_code++ = ' ';
! 451: for (t_ptr = s_com; *t_ptr; ++t_ptr) {
! 452: CHECK_SIZE_CODE;
! 453: *e_code++ = *t_ptr;
! 454: }
! 455: *e_code++ = ' ';
! 456: *e_code = '\0'; /* null terminate code sect */
! 457: ps.want_blank = false;
! 458: e_com = s_com;
! 459: }
! 460: }
! 461: else if (type_code != comment) /* preserve force_nl thru a comment */
! 462: force_nl = false; /* cancel forced newline after newline, form
! 463: * feed, etc */
! 464:
! 465:
! 466:
! 467: /*-----------------------------------------------------*\
! 468: | do switch on type of token scanned |
! 469: \*-----------------------------------------------------*/
! 470: CHECK_SIZE_CODE;
! 471: switch (type_code) { /* now, decide what to do with the token */
! 472:
! 473: case form_feed: /* found a form feed in line */
! 474: ps.use_ff = true; /* a form feed is treated much like a newline */
! 475: dump_line();
! 476: ps.want_blank = false;
! 477: break;
! 478:
! 479: case newline:
! 480: if (ps.last_token != comma || ps.p_l_follow > 0
! 481: || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
! 482: dump_line();
! 483: ps.want_blank = false;
! 484: }
! 485: ++line_no; /* keep track of input line number */
! 486: break;
! 487:
! 488: case lparen: /* got a '(' or '[' */
! 489: ++ps.p_l_follow; /* count parens to make Healy happy */
! 490: if (ps.want_blank && *token != '[' &&
! 491: (ps.last_token != ident || proc_calls_space
! 492: || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
! 493: *e_code++ = ' ';
! 494: if (ps.in_decl && !ps.block_init)
! 495: if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
! 496: ps.dumped_decl_indent = 1;
! 497: sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
! 498: e_code += strlen(e_code);
! 499: }
! 500: else {
! 501: while ((e_code - s_code) < dec_ind) {
! 502: CHECK_SIZE_CODE;
! 503: *e_code++ = ' ';
! 504: }
! 505: *e_code++ = token[0];
! 506: }
! 507: else
! 508: *e_code++ = token[0];
! 509: ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
! 510: if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
! 511: && ps.paren_indents[0] < 2 * ps.ind_size)
! 512: ps.paren_indents[0] = 2 * ps.ind_size;
! 513: ps.want_blank = false;
! 514: if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
! 515: /*
! 516: * this is a kluge to make sure that declarations will be
! 517: * aligned right if proc decl has an explicit type on it, i.e.
! 518: * "int a(x) {..."
! 519: */
! 520: parse(semicolon); /* I said this was a kluge... */
! 521: ps.in_or_st = false; /* turn off flag for structure decl or
! 522: * initialization */
! 523: }
! 524: if (ps.sizeof_keyword)
! 525: ps.sizeof_mask |= 1 << ps.p_l_follow;
! 526: break;
! 527:
! 528: case rparen: /* got a ')' or ']' */
! 529: rparen_count--;
! 530: if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
! 531: ps.last_u_d = true;
! 532: ps.cast_mask &= (1 << ps.p_l_follow) - 1;
! 533: }
! 534: ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
! 535: if (--ps.p_l_follow < 0) {
! 536: ps.p_l_follow = 0;
! 537: diag(0, "Extra %c", *token);
! 538: }
! 539: if (e_code == s_code) /* if the paren starts the line */
! 540: ps.paren_level = ps.p_l_follow; /* then indent it */
! 541:
! 542: *e_code++ = token[0];
! 543: ps.want_blank = true;
! 544:
! 545: if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
! 546: * (...), or some such */
! 547: sp_sw = false;
! 548: force_nl = true;/* must force newline after if */
! 549: ps.last_u_d = true; /* inform lexi that a following
! 550: * operator is unary */
! 551: ps.in_stmt = false; /* dont use stmt continuation
! 552: * indentation */
! 553:
! 554: parse(hd_type); /* let parser worry about if, or whatever */
! 555: }
! 556: ps.search_brace = btype_2; /* this should insure that constructs
! 557: * such as main(){...} and int[]{...}
! 558: * have their braces put in the right
! 559: * place */
! 560: break;
! 561:
! 562: case unary_op: /* this could be any unary operation */
! 563: if (ps.want_blank)
! 564: *e_code++ = ' ';
! 565:
! 566: if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
! 567: sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
! 568: ps.dumped_decl_indent = 1;
! 569: e_code += strlen(e_code);
! 570: }
! 571: else {
! 572: char *res = token;
! 573:
! 574: if (ps.in_decl && !ps.block_init) { /* if this is a unary op
! 575: * in a declaration, we
! 576: * should indent this
! 577: * token */
! 578: for (i = 0; token[i]; ++i); /* find length of token */
! 579: while ((e_code - s_code) < (dec_ind - i)) {
! 580: CHECK_SIZE_CODE;
! 581: *e_code++ = ' '; /* pad it */
! 582: }
! 583: }
! 584: if (troff && token[0] == '-' && token[1] == '>')
! 585: res = "\\(->";
! 586: for (t_ptr = res; *t_ptr; ++t_ptr) {
! 587: CHECK_SIZE_CODE;
! 588: *e_code++ = *t_ptr;
! 589: }
! 590: }
! 591: ps.want_blank = false;
! 592: break;
! 593:
! 594: case binary_op: /* any binary operation */
! 595: if (ps.want_blank)
! 596: *e_code++ = ' ';
! 597: {
! 598: char *res = token;
! 599:
! 600: if (troff)
! 601: switch (token[0]) {
! 602: case '<':
! 603: if (token[1] == '=')
! 604: res = "\\(<=";
! 605: break;
! 606: case '>':
! 607: if (token[1] == '=')
! 608: res = "\\(>=";
! 609: break;
! 610: case '!':
! 611: if (token[1] == '=')
! 612: res = "\\(!=";
! 613: break;
! 614: case '|':
! 615: if (token[1] == '|')
! 616: res = "\\(br\\(br";
! 617: else if (token[1] == 0)
! 618: res = "\\(br";
! 619: break;
! 620: }
! 621: for (t_ptr = res; *t_ptr; ++t_ptr) {
! 622: CHECK_SIZE_CODE;
! 623: *e_code++ = *t_ptr; /* move the operator */
! 624: }
! 625: }
! 626: ps.want_blank = true;
! 627: break;
! 628:
! 629: case postop: /* got a trailing ++ or -- */
! 630: *e_code++ = token[0];
! 631: *e_code++ = token[1];
! 632: ps.want_blank = true;
! 633: break;
! 634:
! 635: case question: /* got a ? */
! 636: squest++; /* this will be used when a later colon
! 637: * appears so we can distinguish the
! 638: * <c>?<n>:<n> construct */
! 639: if (ps.want_blank)
! 640: *e_code++ = ' ';
! 641: *e_code++ = '?';
! 642: ps.want_blank = true;
! 643: break;
! 644:
! 645: case casestmt: /* got word 'case' or 'default' */
! 646: scase = true; /* so we can process the later colon properly */
! 647: goto copy_id;
! 648:
! 649: case colon: /* got a ':' */
! 650: if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
! 651: --squest;
! 652: if (ps.want_blank)
! 653: *e_code++ = ' ';
! 654: *e_code++ = ':';
! 655: ps.want_blank = true;
! 656: break;
! 657: }
! 658: if (ps.in_decl) {
! 659: *e_code++ = ':';
! 660: ps.want_blank = false;
! 661: break;
! 662: }
! 663: ps.in_stmt = false; /* seeing a label does not imply we are in a
! 664: * stmt */
! 665: for (t_ptr = s_code; *t_ptr; ++t_ptr)
! 666: *e_lab++ = *t_ptr; /* turn everything so far into a label */
! 667: e_code = s_code;
! 668: *e_lab++ = ':';
! 669: *e_lab++ = ' ';
! 670: *e_lab = '\0';
! 671:
! 672: force_nl = ps.pcase = scase; /* ps.pcase will be used by
! 673: * dump_line to decide how to
! 674: * indent the label. force_nl
! 675: * will force a case n: to be
! 676: * on a line by itself */
! 677: scase = false;
! 678: ps.want_blank = false;
! 679: break;
! 680:
! 681: case semicolon: /* got a ';' */
! 682: ps.in_or_st = false;/* we are not in an initialization or
! 683: * structure declaration */
! 684: scase = false; /* these will only need resetting in a error */
! 685: squest = 0;
! 686: if (ps.last_token == rparen && rparen_count == 0)
! 687: ps.in_parameter_declaration = 0;
! 688: ps.cast_mask = 0;
! 689: ps.sizeof_mask = 0;
! 690: ps.block_init = 0;
! 691: ps.block_init_level = 0;
! 692: ps.just_saw_decl--;
! 693:
! 694: if (ps.in_decl && s_code == e_code && !ps.block_init)
! 695: while ((e_code - s_code) < (dec_ind - 1)) {
! 696: CHECK_SIZE_CODE;
! 697: *e_code++ = ' ';
! 698: }
! 699:
! 700: ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
! 701: * structure declaration, we
! 702: * arent any more */
! 703:
! 704: if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
! 705:
! 706: /*
! 707: * This should be true iff there were unbalanced parens in the
! 708: * stmt. It is a bit complicated, because the semicolon might
! 709: * be in a for stmt
! 710: */
! 711: diag(1, "Unbalanced parens");
! 712: ps.p_l_follow = 0;
! 713: if (sp_sw) { /* this is a check for a if, while, etc. with
! 714: * unbalanced parens */
! 715: sp_sw = false;
! 716: parse(hd_type); /* dont lose the if, or whatever */
! 717: }
! 718: }
! 719: *e_code++ = ';';
! 720: ps.want_blank = true;
! 721: ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
! 722: * middle of a stmt */
! 723:
! 724: if (!sp_sw) { /* if not if for (;;) */
! 725: parse(semicolon); /* let parser know about end of stmt */
! 726: force_nl = true;/* force newline after a end of stmt */
! 727: }
! 728: break;
! 729:
! 730: case lbrace: /* got a '{' */
! 731: ps.in_stmt = false; /* dont indent the {} */
! 732: if (!ps.block_init)
! 733: force_nl = true;/* force other stuff on same line as '{' onto
! 734: * new line */
! 735: else if (ps.block_init_level <= 0)
! 736: ps.block_init_level = 1;
! 737: else
! 738: ps.block_init_level++;
! 739:
! 740: if (s_code != e_code && !ps.block_init) {
! 741: if (!btype_2) {
! 742: dump_line();
! 743: ps.want_blank = false;
! 744: }
! 745: else if (ps.in_parameter_declaration && !ps.in_or_st) {
! 746: ps.i_l_follow = 0;
! 747: dump_line();
! 748: ps.want_blank = false;
! 749: }
! 750: }
! 751: if (ps.in_parameter_declaration)
! 752: prefix_blankline_requested = 0;
! 753:
! 754: if (ps.p_l_follow > 0) { /* check for preceeding unbalanced
! 755: * parens */
! 756: diag(1, "Unbalanced parens");
! 757: ps.p_l_follow = 0;
! 758: if (sp_sw) { /* check for unclosed if, for, etc. */
! 759: sp_sw = false;
! 760: parse(hd_type);
! 761: ps.ind_level = ps.i_l_follow;
! 762: }
! 763: }
! 764: if (s_code == e_code)
! 765: ps.ind_stmt = false; /* dont put extra indentation on line
! 766: * with '{' */
! 767: if (ps.in_decl && ps.in_or_st) { /* this is either a structure
! 768: * declaration or an init */
! 769: di_stack[ps.dec_nest++] = dec_ind;
! 770: /* ? dec_ind = 0; */
! 771: }
! 772: else {
! 773: ps.decl_on_line = false; /* we cant be in the middle of
! 774: * a declaration, so dont do
! 775: * special indentation of
! 776: * comments */
! 777: if (blanklines_after_declarations_at_proctop
! 778: && ps.in_parameter_declaration)
! 779: postfix_blankline_requested = 1;
! 780: ps.in_parameter_declaration = 0;
! 781: }
! 782: dec_ind = 0;
! 783: parse(lbrace); /* let parser know about this */
! 784: if (ps.want_blank) /* put a blank before '{' if '{' is not at
! 785: * start of line */
! 786: *e_code++ = ' ';
! 787: ps.want_blank = false;
! 788: *e_code++ = '{';
! 789: ps.just_saw_decl = 0;
! 790: break;
! 791:
! 792: case rbrace: /* got a '}' */
! 793: if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
! 794: * omitted in
! 795: * declarations */
! 796: parse(semicolon);
! 797: if (ps.p_l_follow) {/* check for unclosed if, for, else. */
! 798: diag(1, "Unbalanced parens");
! 799: ps.p_l_follow = 0;
! 800: sp_sw = false;
! 801: }
! 802: ps.just_saw_decl = 0;
! 803: ps.block_init_level--;
! 804: if (s_code != e_code && !ps.block_init) { /* '}' must be first on
! 805: * line */
! 806: if (verbose)
! 807: diag(0, "Line broken");
! 808: dump_line();
! 809: }
! 810: *e_code++ = '}';
! 811: ps.want_blank = true;
! 812: ps.in_stmt = ps.ind_stmt = false;
! 813: if (ps.dec_nest > 0) { /* we are in multi-level structure
! 814: * declaration */
! 815: dec_ind = di_stack[--ps.dec_nest];
! 816: if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
! 817: ps.just_saw_decl = 2;
! 818: ps.in_decl = true;
! 819: }
! 820: prefix_blankline_requested = 0;
! 821: parse(rbrace); /* let parser know about this */
! 822: ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
! 823: && ps.il[ps.tos] >= ps.ind_level;
! 824: if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
! 825: postfix_blankline_requested = 1;
! 826: break;
! 827:
! 828: case swstmt: /* got keyword "switch" */
! 829: sp_sw = true;
! 830: hd_type = swstmt; /* keep this for when we have seen the
! 831: * expression */
! 832: goto copy_id; /* go move the token into buffer */
! 833:
! 834: case sp_paren: /* token is if, while, for */
! 835: sp_sw = true; /* the interesting stuff is done after the
! 836: * expression is scanned */
! 837: hd_type = (*token == 'i' ? ifstmt :
! 838: (*token == 'w' ? whilestmt : forstmt));
! 839:
! 840: /*
! 841: * remember the type of header for later use by parser
! 842: */
! 843: goto copy_id; /* copy the token into line */
! 844:
! 845: case sp_nparen: /* got else, do */
! 846: ps.in_stmt = false;
! 847: if (*token == 'e') {
! 848: if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
! 849: if (verbose)
! 850: diag(0, "Line broken");
! 851: dump_line();/* make sure this starts a line */
! 852: ps.want_blank = false;
! 853: }
! 854: force_nl = true;/* also, following stuff must go onto new line */
! 855: last_else = 1;
! 856: parse(elselit);
! 857: }
! 858: else {
! 859: if (e_code != s_code) { /* make sure this starts a line */
! 860: if (verbose)
! 861: diag(0, "Line broken");
! 862: dump_line();
! 863: ps.want_blank = false;
! 864: }
! 865: force_nl = true;/* also, following stuff must go onto new line */
! 866: last_else = 0;
! 867: parse(dolit);
! 868: }
! 869: goto copy_id; /* move the token into line */
! 870:
! 871: case decl: /* we have a declaration type (int, register,
! 872: * etc.) */
! 873: parse(decl); /* let parser worry about indentation */
! 874: if (ps.last_token == rparen && ps.tos <= 1) {
! 875: ps.in_parameter_declaration = 1;
! 876: if (s_code != e_code) {
! 877: dump_line();
! 878: ps.want_blank = 0;
! 879: }
! 880: }
! 881: if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
! 882: ps.ind_level = ps.i_l_follow = 1;
! 883: ps.ind_stmt = 0;
! 884: }
! 885: ps.in_or_st = true; /* this might be a structure or initialization
! 886: * declaration */
! 887: ps.in_decl = ps.decl_on_line = true;
! 888: if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
! 889: ps.just_saw_decl = 2;
! 890: prefix_blankline_requested = 0;
! 891: for (i = 0; token[i++];); /* get length of token */
! 892:
! 893: /*
! 894: * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
! 895: * : i);
! 896: */
! 897: dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
! 898: goto copy_id;
! 899:
! 900: case ident: /* got an identifier or constant */
! 901: if (ps.in_decl) { /* if we are in a declaration, we must indent
! 902: * identifier */
! 903: if (ps.want_blank)
! 904: *e_code++ = ' ';
! 905: ps.want_blank = false;
! 906: if (is_procname == 0 || !procnames_start_line) {
! 907: if (!ps.block_init)
! 908: if (troff && !ps.dumped_decl_indent) {
! 909: sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
! 910: ps.dumped_decl_indent = 1;
! 911: e_code += strlen(e_code);
! 912: }
! 913: else
! 914: while ((e_code - s_code) < dec_ind) {
! 915: CHECK_SIZE_CODE;
! 916: *e_code++ = ' ';
! 917: }
! 918: }
! 919: else {
! 920: if (dec_ind && s_code != e_code)
! 921: dump_line();
! 922: dec_ind = 0;
! 923: ps.want_blank = false;
! 924: }
! 925: }
! 926: else if (sp_sw && ps.p_l_follow == 0) {
! 927: sp_sw = false;
! 928: force_nl = true;
! 929: ps.last_u_d = true;
! 930: ps.in_stmt = false;
! 931: parse(hd_type);
! 932: }
! 933: copy_id:
! 934: if (ps.want_blank)
! 935: *e_code++ = ' ';
! 936: if (troff && ps.its_a_keyword) {
! 937: e_code = chfont(&bodyf, &keywordf, e_code);
! 938: for (t_ptr = token; *t_ptr; ++t_ptr) {
! 939: CHECK_SIZE_CODE;
! 940: *e_code++ = keywordf.allcaps && islower(*t_ptr)
! 941: ? toupper(*t_ptr) : *t_ptr;
! 942: }
! 943: e_code = chfont(&keywordf, &bodyf, e_code);
! 944: }
! 945: else
! 946: for (t_ptr = token; *t_ptr; ++t_ptr) {
! 947: CHECK_SIZE_CODE;
! 948: *e_code++ = *t_ptr;
! 949: }
! 950: ps.want_blank = true;
! 951: break;
! 952:
! 953: case period: /* treat a period kind of like a binary
! 954: * operation */
! 955: *e_code++ = '.'; /* move the period into line */
! 956: ps.want_blank = false; /* dont put a blank after a period */
! 957: break;
! 958:
! 959: case comma:
! 960: ps.want_blank = (s_code != e_code); /* only put blank after comma
! 961: * if comma does not start the
! 962: * line */
! 963: if (ps.in_decl && is_procname == 0 && !ps.block_init)
! 964: while ((e_code - s_code) < (dec_ind - 1)) {
! 965: CHECK_SIZE_CODE;
! 966: *e_code++ = ' ';
! 967: }
! 968:
! 969: *e_code++ = ',';
! 970: if (ps.p_l_follow == 0) {
! 971: if (ps.block_init_level <= 0)
! 972: ps.block_init = 0;
! 973: if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
! 974: force_nl = true;
! 975: }
! 976: break;
! 977:
! 978: case preesc: /* got the character '#' */
! 979: if ((s_com != e_com) ||
! 980: (s_lab != e_lab) ||
! 981: (s_code != e_code))
! 982: dump_line();
! 983: *e_lab++ = '#'; /* move whole line to 'label' buffer */
! 984: {
! 985: int in_comment = 0;
! 986: int com_start = 0;
! 987: char quote = 0;
! 988: int com_end = 0;
! 989:
! 990: while (*buf_ptr == ' ' || *buf_ptr == '\t') {
! 991: buf_ptr++;
! 992: if (buf_ptr >= buf_end)
! 993: fill_buffer();
! 994: }
! 995: while (*buf_ptr != '\n' || in_comment) {
! 996: CHECK_SIZE_LAB;
! 997: *e_lab = *buf_ptr++;
! 998: if (buf_ptr >= buf_end)
! 999: fill_buffer();
! 1000: switch (*e_lab++) {
! 1001: case BACKSLASH:
! 1002: if (troff)
! 1003: *e_lab++ = BACKSLASH;
! 1004: if (!in_comment) {
! 1005: *e_lab++ = *buf_ptr++;
! 1006: if (buf_ptr >= buf_end)
! 1007: fill_buffer();
! 1008: }
! 1009: break;
! 1010: case '/':
! 1011: if (*buf_ptr == '*' && !in_comment && !quote) {
! 1012: in_comment = 1;
! 1013: *e_lab++ = *buf_ptr++;
! 1014: com_start = e_lab - s_lab - 2;
! 1015: }
! 1016: break;
! 1017: case '"':
! 1018: if (quote == '"')
! 1019: quote = 0;
! 1020: break;
! 1021: case '\'':
! 1022: if (quote == '\'')
! 1023: quote = 0;
! 1024: break;
! 1025: case '*':
! 1026: if (*buf_ptr == '/' && in_comment) {
! 1027: in_comment = 0;
! 1028: *e_lab++ = *buf_ptr++;
! 1029: com_end = e_lab - s_lab;
! 1030: }
! 1031: break;
! 1032: }
! 1033: }
! 1034:
! 1035: while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
! 1036: e_lab--;
! 1037: if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on
! 1038: * preprocessor line */
! 1039: if (sc_end == 0) /* if this is the first comment, we
! 1040: * must set up the buffer */
! 1041: sc_end = &(save_com[0]);
! 1042: else {
! 1043: *sc_end++ = '\n'; /* add newline between
! 1044: * comments */
! 1045: *sc_end++ = ' ';
! 1046: --line_no;
! 1047: }
! 1048: bcopy(s_lab + com_start, sc_end, com_end - com_start);
! 1049: sc_end += com_end - com_start;
! 1050: if (sc_end >= &save_com[sc_size])
! 1051: abort();
! 1052: e_lab = s_lab + com_start;
! 1053: while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
! 1054: e_lab--;
! 1055: bp_save = buf_ptr; /* save current input buffer */
! 1056: be_save = buf_end;
! 1057: buf_ptr = save_com; /* fix so that subsequent calls to
! 1058: * lexi will take tokens out of
! 1059: * save_com */
! 1060: *sc_end++ = ' '; /* add trailing blank, just in case */
! 1061: buf_end = sc_end;
! 1062: sc_end = 0;
! 1063: }
! 1064: *e_lab = '\0'; /* null terminate line */
! 1065: ps.pcase = false;
! 1066: }
! 1067:
! 1068: if (strncmp(s_lab, "#if", 3) == 0) {
! 1069: if (blanklines_around_conditional_compilation) {
! 1070: register c;
! 1071: prefix_blankline_requested++;
! 1072: while ((c = getc(input)) == '\n');
! 1073: ungetc(c, input);
! 1074: }
! 1075: if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) {
! 1076: match_state[ifdef_level].tos = -1;
! 1077: state_stack[ifdef_level++] = ps;
! 1078: }
! 1079: else
! 1080: diag(1, "#if stack overflow");
! 1081: }
! 1082: else if (strncmp(s_lab, "#else", 5) == 0)
! 1083: if (ifdef_level <= 0)
! 1084: diag(1, "Unmatched #else");
! 1085: else {
! 1086: match_state[ifdef_level - 1] = ps;
! 1087: ps = state_stack[ifdef_level - 1];
! 1088: }
! 1089: else if (strncmp(s_lab, "#endif", 6) == 0) {
! 1090: if (ifdef_level <= 0)
! 1091: diag(1, "Unmatched #endif");
! 1092: else {
! 1093: ifdef_level--;
! 1094:
! 1095: #ifdef undef
! 1096: /*
! 1097: * This match needs to be more intelligent before the
! 1098: * message is useful
! 1099: */
! 1100: if (match_state[ifdef_level].tos >= 0
! 1101: && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
! 1102: diag(0, "Syntactically inconsistant #ifdef alternatives.");
! 1103: #endif
! 1104: }
! 1105: if (blanklines_around_conditional_compilation) {
! 1106: postfix_blankline_requested++;
! 1107: n_real_blanklines = 0;
! 1108: }
! 1109: }
! 1110: break; /* subsequent processing of the newline
! 1111: * character will cause the line to be printed */
! 1112:
! 1113: case comment: /* we have gotten a /* this is a biggie */
! 1114: if (flushed_nl) { /* we should force a broken line here */
! 1115: flushed_nl = false;
! 1116: dump_line();
! 1117: ps.want_blank = false; /* dont insert blank at line start */
! 1118: force_nl = false;
! 1119: }
! 1120: pr_comment();
! 1121: break;
! 1122: } /* end of big switch stmt */
! 1123:
! 1124: *e_code = '\0'; /* make sure code section is null terminated */
! 1125: if (type_code != comment && type_code != newline && type_code != preesc)
! 1126: ps.last_token = type_code;
! 1127: } /* end of main while (1) loop */
! 1128: }
! 1129:
! 1130: /*
! 1131: * copy input file to backup file if in_name is /blah/blah/blah/file, then
! 1132: * backup file will be ".Bfile" then make the backup file the input and
! 1133: * original input file the output
! 1134: */
! 1135: bakcopy()
! 1136: {
! 1137: int n,
! 1138: bakchn;
! 1139: char buff[8 * 1024];
! 1140: register char *p;
! 1141:
! 1142: /* construct file name .Bfile */
! 1143: for (p = in_name; *p; p++); /* skip to end of string */
! 1144: while (p > in_name && *p != '/') /* find last '/' */
! 1145: p--;
! 1146: if (*p == '/')
! 1147: p++;
! 1148: sprintf(bakfile, "%s.BAK", p);
! 1149:
! 1150: /* copy in_name to backup file */
! 1151: bakchn = creat(bakfile, 0600);
! 1152: if (bakchn < 0)
! 1153: err(bakfile);
! 1154: while (n = read(fileno(input), buff, sizeof buff))
! 1155: if (write(bakchn, buff, n) != n)
! 1156: err(bakfile);
! 1157: if (n < 0)
! 1158: err(in_name);
! 1159: close(bakchn);
! 1160: fclose(input);
! 1161:
! 1162: /* re-open backup file as the input file */
! 1163: input = fopen(bakfile, "r");
! 1164: if (input == 0)
! 1165: err(bakfile);
! 1166: /* now the original input file will be the output */
! 1167: output = fopen(in_name, "w");
! 1168: if (output == 0) {
! 1169: unlink(bakfile);
! 1170: err(in_name);
! 1171: }
! 1172: }
! 1173:
! 1174: err(msg)
! 1175: char *msg;
! 1176: {
! 1177: extern int errno;
! 1178: char *strerror();
! 1179:
! 1180: (void)fprintf(stderr, "indent: %s: %s\n", msg, strerror(errno));
! 1181: exit(1);
! 1182: }
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