Annotation of ircnowd/src/portab/ansi2knr.c, Revision 1.1
1.1 ! tomglok 1: /* Copyright (C) 1989, 2000 Aladdin Enterprises. All rights reserved. */
! 2:
! 3: /* Convert ANSI C function definitions to K&R ("traditional C") syntax */
! 4:
! 5: /*
! 6: ansi2knr is distributed in the hope that it will be useful, but WITHOUT ANY
! 7: WARRANTY. No author or distributor accepts responsibility to anyone for the
! 8: consequences of using it or for whether it serves any particular purpose or
! 9: works at all, unless he says so in writing. Refer to the GNU General Public
! 10: License (the "GPL") for full details.
! 11:
! 12: Everyone is granted permission to copy, modify and redistribute ansi2knr,
! 13: but only under the conditions described in the GPL. A copy of this license
! 14: is supposed to have been given to you along with ansi2knr so you can know
! 15: your rights and responsibilities. It should be in a file named COPYLEFT,
! 16: or, if there is no file named COPYLEFT, a file named COPYING. Among other
! 17: things, the copyright notice and this notice must be preserved on all
! 18: copies.
! 19:
! 20: We explicitly state here what we believe is already implied by the GPL: if
! 21: the ansi2knr program is distributed as a separate set of sources and a
! 22: separate executable file which are aggregated on a storage medium together
! 23: with another program, this in itself does not bring the other program under
! 24: the GPL, nor does the mere fact that such a program or the procedures for
! 25: constructing it invoke the ansi2knr executable bring any other part of the
! 26: program under the GPL.
! 27: */
! 28:
! 29: /*
! 30: * Usage:
! 31: ansi2knr [--filename FILENAME] [INPUT_FILE [OUTPUT_FILE]]
! 32: * --filename provides the file name for the #line directive in the output,
! 33: * overriding input_file (if present).
! 34: * If no input_file is supplied, input is read from stdin.
! 35: * If no output_file is supplied, output goes to stdout.
! 36: * There are no error messages.
! 37: *
! 38: * ansi2knr recognizes function definitions by seeing a non-keyword
! 39: * identifier at the left margin, followed by a left parenthesis, with a
! 40: * right parenthesis as the last character on the line, and with a left
! 41: * brace as the first token on the following line (ignoring possible
! 42: * intervening comments and/or preprocessor directives), except that a line
! 43: * consisting of only
! 44: * identifier1(identifier2)
! 45: * will not be considered a function definition unless identifier2 is
! 46: * the word "void", and a line consisting of
! 47: * identifier1(identifier2, <<arbitrary>>)
! 48: * will not be considered a function definition.
! 49: * ansi2knr will recognize a multi-line header provided that no intervening
! 50: * line ends with a left or right brace or a semicolon. These algorithms
! 51: * ignore whitespace, comments, and preprocessor directives, except that
! 52: * the function name must be the first thing on the line. The following
! 53: * constructs will confuse it:
! 54: * - Any other construct that starts at the left margin and
! 55: * follows the above syntax (such as a macro or function call).
! 56: * - Some macros that tinker with the syntax of function headers.
! 57: */
! 58:
! 59: /*
! 60: * The original and principal author of ansi2knr is L. Peter Deutsch
! 61: * <ghost@aladdin.com>. Other authors are noted in the change history
! 62: * that follows (in reverse chronological order):
! 63:
! 64: lpd 2000-04-12 backs out Eggert's changes because of bugs:
! 65: - concatlits didn't declare the type of its bufend argument;
! 66: - concatlits didn't't recognize when it was inside a comment;
! 67: - scanstring could scan backward past the beginning of the string; when
! 68: - the check for \ + newline in scanstring was unnecessary.
! 69:
! 70: 2000-03-05 Paul Eggert <eggert@twinsun.com>
! 71:
! 72: Add support for concatenated string literals.
! 73: * ansi2knr.c (concatlits): New decl.
! 74: (main): Invoke concatlits to concatenate string literals.
! 75: (scanstring): Handle backslash-newline correctly. Work with
! 76: character constants. Fix bug when scanning backwards through
! 77: backslash-quote. Check for unterminated strings.
! 78: (convert1): Parse character constants, too.
! 79: (appendline, concatlits): New functions.
! 80: * ansi2knr.1: Document this.
! 81:
! 82: lpd 1999-08-17 added code to allow preprocessor directives
! 83: wherever comments are allowed
! 84: lpd 1999-04-12 added minor fixes from Pavel Roskin
! 85: <pavel_roskin@geocities.com> for clean compilation with
! 86: gcc -W -Wall
! 87: lpd 1999-03-22 added hack to recognize lines consisting of
! 88: identifier1(identifier2, xxx) as *not* being procedures
! 89: lpd 1999-02-03 made indentation of preprocessor commands consistent
! 90: lpd 1999-01-28 fixed two bugs: a '/' in an argument list caused an
! 91: endless loop; quoted strings within an argument list
! 92: confused the parser
! 93: lpd 1999-01-24 added a check for write errors on the output,
! 94: suggested by Jim Meyering <meyering@ascend.com>
! 95: lpd 1998-11-09 added further hack to recognize identifier(void)
! 96: as being a procedure
! 97: lpd 1998-10-23 added hack to recognize lines consisting of
! 98: identifier1(identifier2) as *not* being procedures
! 99: lpd 1997-12-08 made input_file optional; only closes input and/or
! 100: output file if not stdin or stdout respectively; prints
! 101: usage message on stderr rather than stdout; adds
! 102: --filename switch (changes suggested by
! 103: <ceder@lysator.liu.se>)
! 104: lpd 1996-01-21 added code to cope with not HAVE_CONFIG_H and with
! 105: compilers that don't understand void, as suggested by
! 106: Tom Lane
! 107: lpd 1996-01-15 changed to require that the first non-comment token
! 108: on the line following a function header be a left brace,
! 109: to reduce sensitivity to macros, as suggested by Tom Lane
! 110: <tgl@sss.pgh.pa.us>
! 111: lpd 1995-06-22 removed #ifndefs whose sole purpose was to define
! 112: undefined preprocessor symbols as 0; changed all #ifdefs
! 113: for configuration symbols to #ifs
! 114: lpd 1995-04-05 changed copyright notice to make it clear that
! 115: including ansi2knr in a program does not bring the entire
! 116: program under the GPL
! 117: lpd 1994-12-18 added conditionals for systems where ctype macros
! 118: don't handle 8-bit characters properly, suggested by
! 119: Francois Pinard <pinard@iro.umontreal.ca>;
! 120: removed --varargs switch (this is now the default)
! 121: lpd 1994-10-10 removed CONFIG_BROKETS conditional
! 122: lpd 1994-07-16 added some conditionals to help GNU `configure',
! 123: suggested by Francois Pinard <pinard@iro.umontreal.ca>;
! 124: properly erase prototype args in function parameters,
! 125: contributed by Jim Avera <jima@netcom.com>;
! 126: correct error in writeblanks (it shouldn't erase EOLs)
! 127: lpd 1989-xx-xx original version
! 128: */
! 129:
! 130: /* Most of the conditionals here are to make ansi2knr work with */
! 131: /* or without the GNU configure machinery. */
! 132:
! 133: #if HAVE_CONFIG_H
! 134: # include <config.h>
! 135: #endif
! 136:
! 137: #include <stdio.h>
! 138: #include <ctype.h>
! 139:
! 140: #if HAVE_CONFIG_H
! 141:
! 142: /*
! 143: For properly autoconfiguring ansi2knr, use AC_CONFIG_HEADER(config.h).
! 144: This will define HAVE_CONFIG_H and so, activate the following lines.
! 145: */
! 146:
! 147: # if STDC_HEADERS || HAVE_STRING_H
! 148: # include <string.h>
! 149: # else
! 150: # include <strings.h>
! 151: # endif
! 152:
! 153: #else /* not HAVE_CONFIG_H */
! 154:
! 155: /* Otherwise do it the hard way */
! 156:
! 157: # ifdef BSD
! 158: # include <strings.h>
! 159: # else
! 160: # ifdef VMS
! 161: extern int strlen(), strncmp();
! 162: # else
! 163: # include <string.h>
! 164: # endif
! 165: # endif
! 166:
! 167: #endif /* not HAVE_CONFIG_H */
! 168:
! 169: #if STDC_HEADERS
! 170: # include <stdlib.h>
! 171: #else
! 172: /*
! 173: malloc and free should be declared in stdlib.h,
! 174: but if you've got a K&R compiler, they probably aren't.
! 175: */
! 176: # ifdef MSDOS
! 177: # include <malloc.h>
! 178: # else
! 179: # ifdef VMS
! 180: extern char *malloc();
! 181: extern void free();
! 182: # else
! 183: extern char *malloc();
! 184: extern int free();
! 185: # endif
! 186: # endif
! 187:
! 188: #endif
! 189:
! 190: /* Define NULL (for *very* old compilers). */
! 191: #ifndef NULL
! 192: # define NULL (0)
! 193: #endif
! 194:
! 195: /*
! 196: * The ctype macros don't always handle 8-bit characters correctly.
! 197: * Compensate for this here.
! 198: */
! 199: #ifdef isascii
! 200: # undef HAVE_ISASCII /* just in case */
! 201: # define HAVE_ISASCII 1
! 202: #else
! 203: #endif
! 204: #if STDC_HEADERS || !HAVE_ISASCII
! 205: # define is_ascii(c) 1
! 206: #else
! 207: # define is_ascii(c) isascii(c)
! 208: #endif
! 209:
! 210: #define is_space(c) (is_ascii(c) && isspace(c))
! 211: #define is_alpha(c) (is_ascii(c) && isalpha(c))
! 212: #define is_alnum(c) (is_ascii(c) && isalnum(c))
! 213:
! 214: /* Scanning macros */
! 215: #define isidchar(ch) (is_alnum(ch) || (ch) == '_')
! 216: #define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_')
! 217:
! 218: /* Forward references */
! 219: char *ppdirforward();
! 220: char *ppdirbackward();
! 221: char *skipspace();
! 222: char *scanstring();
! 223: int writeblanks();
! 224: int test1();
! 225: int convert1();
! 226:
! 227: /* The main program */
! 228: int
! 229: main(argc, argv)
! 230: int argc;
! 231: char *argv[];
! 232: { FILE *in = stdin;
! 233: FILE *out = stdout;
! 234: char *filename = 0;
! 235: char *program_name = argv[0];
! 236: char *output_name = 0;
! 237: #define bufsize 5000 /* arbitrary size */
! 238: char *buf;
! 239: char *line;
! 240: char *more;
! 241: char *usage =
! 242: "Usage: ansi2knr [--filename FILENAME] [INPUT_FILE [OUTPUT_FILE]]\n";
! 243: /*
! 244: * In previous versions, ansi2knr recognized a --varargs switch.
! 245: * If this switch was supplied, ansi2knr would attempt to convert
! 246: * a ... argument to va_alist and va_dcl; if this switch was not
! 247: * supplied, ansi2knr would simply drop any such arguments.
! 248: * Now, ansi2knr always does this conversion, and we only
! 249: * check for this switch for backward compatibility.
! 250: */
! 251: int convert_varargs = 1;
! 252: int output_error;
! 253:
! 254: while ( argc > 1 && argv[1][0] == '-' ) {
! 255: if ( !strcmp(argv[1], "--varargs") ) {
! 256: convert_varargs = 1;
! 257: argc--;
! 258: argv++;
! 259: continue;
! 260: }
! 261: if ( !strcmp(argv[1], "--filename") && argc > 2 ) {
! 262: filename = argv[2];
! 263: argc -= 2;
! 264: argv += 2;
! 265: continue;
! 266: }
! 267: fprintf(stderr, "%s: Unrecognized switch: %s\n", program_name,
! 268: argv[1]);
! 269: fprintf(stderr, usage);
! 270: exit(1);
! 271: }
! 272: switch ( argc )
! 273: {
! 274: default:
! 275: fprintf(stderr, usage);
! 276: exit(0);
! 277: case 3:
! 278: output_name = argv[2];
! 279: out = fopen(output_name, "w");
! 280: if ( out == NULL ) {
! 281: fprintf(stderr, "%s: Cannot open output file %s\n",
! 282: program_name, output_name);
! 283: exit(1);
! 284: }
! 285: /* falls through */
! 286: case 2:
! 287: in = fopen(argv[1], "r");
! 288: if ( in == NULL ) {
! 289: fprintf(stderr, "%s: Cannot open input file %s\n",
! 290: program_name, argv[1]);
! 291: exit(1);
! 292: }
! 293: if ( filename == 0 )
! 294: filename = argv[1];
! 295: /* falls through */
! 296: case 1:
! 297: break;
! 298: }
! 299: if ( filename )
! 300: fprintf(out, "#line 1 \"%s\"\n", filename);
! 301: buf = malloc(bufsize);
! 302: if ( buf == NULL )
! 303: {
! 304: fprintf(stderr, "Unable to allocate read buffer!\n");
! 305: exit(1);
! 306: }
! 307: line = buf;
! 308: while ( fgets(line, (unsigned)(buf + bufsize - line), in) != NULL )
! 309: {
! 310: test: line += strlen(line);
! 311: switch ( test1(buf) )
! 312: {
! 313: case 2: /* a function header */
! 314: convert1(buf, out, 1, convert_varargs);
! 315: break;
! 316: case 1: /* a function */
! 317: /* Check for a { at the start of the next line. */
! 318: more = ++line;
! 319: f: if ( line >= buf + (bufsize - 1) ) /* overflow check */
! 320: goto wl;
! 321: if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL )
! 322: goto wl;
! 323: switch ( *skipspace(ppdirforward(more), 1) )
! 324: {
! 325: case '{':
! 326: /* Definitely a function header. */
! 327: convert1(buf, out, 0, convert_varargs);
! 328: fputs(more, out);
! 329: break;
! 330: case 0:
! 331: /* The next line was blank or a comment: */
! 332: /* keep scanning for a non-comment. */
! 333: line += strlen(line);
! 334: goto f;
! 335: default:
! 336: /* buf isn't a function header, but */
! 337: /* more might be. */
! 338: fputs(buf, out);
! 339: strcpy(buf, more);
! 340: line = buf;
! 341: goto test;
! 342: }
! 343: break;
! 344: case -1: /* maybe the start of a function */
! 345: if ( line != buf + (bufsize - 1) ) /* overflow check */
! 346: continue;
! 347: /* falls through */
! 348: default: /* not a function */
! 349: wl: fputs(buf, out);
! 350: break;
! 351: }
! 352: line = buf;
! 353: }
! 354: if ( line != buf )
! 355: fputs(buf, out);
! 356: free(buf);
! 357: if ( output_name ) {
! 358: output_error = ferror(out);
! 359: output_error |= fclose(out);
! 360: } else { /* out == stdout */
! 361: fflush(out);
! 362: output_error = ferror(out);
! 363: }
! 364: if ( output_error ) {
! 365: fprintf(stderr, "%s: error writing to %s\n", program_name,
! 366: (output_name ? output_name : "stdout"));
! 367: exit(1);
! 368: }
! 369: if ( in != stdin )
! 370: fclose(in);
! 371: return 0;
! 372: }
! 373:
! 374: /*
! 375: * Skip forward or backward over one or more preprocessor directives.
! 376: */
! 377: char *
! 378: ppdirforward(p)
! 379: char *p;
! 380: {
! 381: for (; *p == '#'; ++p) {
! 382: for (; *p != '\r' && *p != '\n'; ++p)
! 383: if (*p == 0)
! 384: return p;
! 385: if (*p == '\r' && p[1] == '\n')
! 386: ++p;
! 387: }
! 388: return p;
! 389: }
! 390: char *
! 391: ppdirbackward(p, limit)
! 392: char *p;
! 393: char *limit;
! 394: {
! 395: char *np = p;
! 396:
! 397: for (;; p = --np) {
! 398: if (*np == '\n' && np[-1] == '\r')
! 399: --np;
! 400: for (; np > limit && np[-1] != '\r' && np[-1] != '\n'; --np)
! 401: if (np[-1] == 0)
! 402: return np;
! 403: if (*np != '#')
! 404: return p;
! 405: }
! 406: }
! 407:
! 408: /*
! 409: * Skip over whitespace, comments, and preprocessor directives,
! 410: * in either direction.
! 411: */
! 412: char *
! 413: skipspace(p, dir)
! 414: char *p;
! 415: int dir; /* 1 for forward, -1 for backward */
! 416: {
! 417: for ( ; ; ) {
! 418: while ( is_space(*p) )
! 419: p += dir;
! 420: if ( !(*p == '/' && p[dir] == '*') )
! 421: break;
! 422: p += dir; p += dir;
! 423: while ( !(*p == '*' && p[dir] == '/') ) {
! 424: if ( *p == 0 )
! 425: return p; /* multi-line comment?? */
! 426: p += dir;
! 427: }
! 428: p += dir; p += dir;
! 429: }
! 430: return p;
! 431: }
! 432:
! 433: /* Scan over a quoted string, in either direction. */
! 434: char *
! 435: scanstring(p, dir)
! 436: char *p;
! 437: int dir;
! 438: {
! 439: for (p += dir; ; p += dir)
! 440: if (*p == '"' && p[-dir] != '\\')
! 441: return p + dir;
! 442: }
! 443:
! 444: /*
! 445: * Write blanks over part of a string.
! 446: * Don't overwrite end-of-line characters.
! 447: */
! 448: int
! 449: writeblanks(start, end)
! 450: char *start;
! 451: char *end;
! 452: { char *p;
! 453: for ( p = start; p < end; p++ )
! 454: if ( *p != '\r' && *p != '\n' )
! 455: *p = ' ';
! 456: return 0;
! 457: }
! 458:
! 459: /*
! 460: * Test whether the string in buf is a function definition.
! 461: * The string may contain and/or end with a newline.
! 462: * Return as follows:
! 463: * 0 - definitely not a function definition;
! 464: * 1 - definitely a function definition;
! 465: * 2 - definitely a function prototype (NOT USED);
! 466: * -1 - may be the beginning of a function definition,
! 467: * append another line and look again.
! 468: * The reason we don't attempt to convert function prototypes is that
! 469: * Ghostscript's declaration-generating macros look too much like
! 470: * prototypes, and confuse the algorithms.
! 471: */
! 472: int
! 473: test1(buf)
! 474: char *buf;
! 475: { char *p = buf;
! 476: char *bend;
! 477: char *endfn;
! 478: int contin;
! 479:
! 480: if ( !isidfirstchar(*p) )
! 481: return 0; /* no name at left margin */
! 482: bend = skipspace(ppdirbackward(buf + strlen(buf) - 1, buf), -1);
! 483: switch ( *bend )
! 484: {
! 485: case ';': contin = 0 /*2*/; break;
! 486: case ')': contin = 1; break;
! 487: case '{': return 0; /* not a function */
! 488: case '}': return 0; /* not a function */
! 489: default: contin = -1;
! 490: }
! 491: while ( isidchar(*p) )
! 492: p++;
! 493: endfn = p;
! 494: p = skipspace(p, 1);
! 495: if ( *p++ != '(' )
! 496: return 0; /* not a function */
! 497: p = skipspace(p, 1);
! 498: if ( *p == ')' )
! 499: return 0; /* no parameters */
! 500: /* Check that the apparent function name isn't a keyword. */
! 501: /* We only need to check for keywords that could be followed */
! 502: /* by a left parenthesis (which, unfortunately, is most of them). */
! 503: { static char *words[] =
! 504: { "asm", "auto", "case", "char", "const", "double",
! 505: "extern", "float", "for", "if", "int", "long",
! 506: "register", "return", "short", "signed", "sizeof",
! 507: "static", "switch", "typedef", "unsigned",
! 508: "void", "volatile", "while", 0
! 509: };
! 510: char **key = words;
! 511: char *kp;
! 512: unsigned len = endfn - buf;
! 513:
! 514: while ( (kp = *key) != 0 )
! 515: { if ( strlen(kp) == len && !strncmp(kp, buf, len) )
! 516: return 0; /* name is a keyword */
! 517: key++;
! 518: }
! 519: }
! 520: {
! 521: char *id = p;
! 522: int len;
! 523: /*
! 524: * Check for identifier1(identifier2) and not
! 525: * identifier1(void), or identifier1(identifier2, xxxx).
! 526: */
! 527:
! 528: while ( isidchar(*p) )
! 529: p++;
! 530: len = p - id;
! 531: p = skipspace(p, 1);
! 532: if (*p == ',' ||
! 533: (*p == ')' && (len != 4 || strncmp(id, "void", 4)))
! 534: )
! 535: return 0; /* not a function */
! 536: }
! 537: /*
! 538: * If the last significant character was a ), we need to count
! 539: * parentheses, because it might be part of a formal parameter
! 540: * that is a procedure.
! 541: */
! 542: if (contin > 0) {
! 543: int level = 0;
! 544:
! 545: for (p = skipspace(buf, 1); *p; p = skipspace(p + 1, 1))
! 546: level += (*p == '(' ? 1 : *p == ')' ? -1 : 0);
! 547: if (level > 0)
! 548: contin = -1;
! 549: }
! 550: return contin;
! 551: }
! 552:
! 553: /* Convert a recognized function definition or header to K&R syntax. */
! 554: int
! 555: convert1(buf, out, header, convert_varargs)
! 556: char *buf;
! 557: FILE *out;
! 558: int header; /* Boolean */
! 559: int convert_varargs; /* Boolean */
! 560: { char *endfn;
! 561: char *p;
! 562: /*
! 563: * The breaks table contains pointers to the beginning and end
! 564: * of each argument.
! 565: */
! 566: char **breaks;
! 567: unsigned num_breaks = 2; /* for testing */
! 568: char **btop;
! 569: char **bp;
! 570: char **ap;
! 571: char *vararg = 0;
! 572:
! 573: /* Pre-ANSI implementations don't agree on whether strchr */
! 574: /* is called strchr or index, so we open-code it here. */
! 575: for ( endfn = buf; *(endfn++) != '('; )
! 576: ;
! 577: top: p = endfn;
! 578: breaks = (char **)malloc(sizeof(char *) * num_breaks * 2);
! 579: if ( breaks == NULL )
! 580: { /* Couldn't allocate break table, give up */
! 581: fprintf(stderr, "Unable to allocate break table!\n");
! 582: fputs(buf, out);
! 583: return -1;
! 584: }
! 585: btop = breaks + num_breaks * 2 - 2;
! 586: bp = breaks;
! 587: /* Parse the argument list */
! 588: do
! 589: { int level = 0;
! 590: char *lp = NULL;
! 591: char *rp = NULL;
! 592: char *end = NULL;
! 593:
! 594: if ( bp >= btop )
! 595: { /* Filled up break table. */
! 596: /* Allocate a bigger one and start over. */
! 597: free((char *)breaks);
! 598: num_breaks <<= 1;
! 599: goto top;
! 600: }
! 601: *bp++ = p;
! 602: /* Find the end of the argument */
! 603: for ( ; end == NULL; p++ )
! 604: { switch(*p)
! 605: {
! 606: case ',':
! 607: if ( !level ) end = p;
! 608: break;
! 609: case '(':
! 610: if ( !level ) lp = p;
! 611: level++;
! 612: break;
! 613: case ')':
! 614: if ( --level < 0 ) end = p;
! 615: else rp = p;
! 616: break;
! 617: case '/':
! 618: if (p[1] == '*')
! 619: p = skipspace(p, 1) - 1;
! 620: break;
! 621: case '"':
! 622: p = scanstring(p, 1) - 1;
! 623: break;
! 624: default:
! 625: ;
! 626: }
! 627: }
! 628: /* Erase any embedded prototype parameters. */
! 629: if ( lp && rp )
! 630: writeblanks(lp + 1, rp);
! 631: p--; /* back up over terminator */
! 632: /* Find the name being declared. */
! 633: /* This is complicated because of procedure and */
! 634: /* array modifiers. */
! 635: for ( ; ; )
! 636: { p = skipspace(p - 1, -1);
! 637: switch ( *p )
! 638: {
! 639: case ']': /* skip array dimension(s) */
! 640: case ')': /* skip procedure args OR name */
! 641: { int level = 1;
! 642: while ( level )
! 643: switch ( *--p )
! 644: {
! 645: case ']': case ')':
! 646: level++;
! 647: break;
! 648: case '[': case '(':
! 649: level--;
! 650: break;
! 651: case '/':
! 652: if (p > buf && p[-1] == '*')
! 653: p = skipspace(p, -1) + 1;
! 654: break;
! 655: case '"':
! 656: p = scanstring(p, -1) + 1;
! 657: break;
! 658: default: ;
! 659: }
! 660: }
! 661: if ( *p == '(' && *skipspace(p + 1, 1) == '*' )
! 662: { /* We found the name being declared */
! 663: while ( !isidfirstchar(*p) )
! 664: p = skipspace(p, 1) + 1;
! 665: goto found;
! 666: }
! 667: break;
! 668: default:
! 669: goto found;
! 670: }
! 671: }
! 672: found: if ( *p == '.' && p[-1] == '.' && p[-2] == '.' )
! 673: { if ( convert_varargs )
! 674: { *bp++ = "va_alist";
! 675: vararg = p-2;
! 676: }
! 677: else
! 678: { p++;
! 679: if ( bp == breaks + 1 ) /* sole argument */
! 680: writeblanks(breaks[0], p);
! 681: else
! 682: writeblanks(bp[-1] - 1, p);
! 683: bp--;
! 684: }
! 685: }
! 686: else
! 687: { while ( isidchar(*p) ) p--;
! 688: *bp++ = p+1;
! 689: }
! 690: p = end;
! 691: }
! 692: while ( *p++ == ',' );
! 693: *bp = p;
! 694: /* Make a special check for 'void' arglist */
! 695: if ( bp == breaks+2 )
! 696: { p = skipspace(breaks[0], 1);
! 697: if ( !strncmp(p, "void", 4) )
! 698: { p = skipspace(p+4, 1);
! 699: if ( p == breaks[2] - 1 )
! 700: { bp = breaks; /* yup, pretend arglist is empty */
! 701: writeblanks(breaks[0], p + 1);
! 702: }
! 703: }
! 704: }
! 705: /* Put out the function name and left parenthesis. */
! 706: p = buf;
! 707: while ( p != endfn ) putc(*p, out), p++;
! 708: /* Put out the declaration. */
! 709: if ( header )
! 710: { fputs(");", out);
! 711: for ( p = breaks[0]; *p; p++ )
! 712: if ( *p == '\r' || *p == '\n' )
! 713: putc(*p, out);
! 714: }
! 715: else
! 716: { for ( ap = breaks+1; ap < bp; ap += 2 )
! 717: { p = *ap;
! 718: while ( isidchar(*p) )
! 719: putc(*p, out), p++;
! 720: if ( ap < bp - 1 )
! 721: fputs(", ", out);
! 722: }
! 723: fputs(") ", out);
! 724: /* Put out the argument declarations */
! 725: for ( ap = breaks+2; ap <= bp; ap += 2 )
! 726: (*ap)[-1] = ';';
! 727: if ( vararg != 0 )
! 728: { *vararg = 0;
! 729: fputs(breaks[0], out); /* any prior args */
! 730: fputs("va_dcl", out); /* the final arg */
! 731: fputs(bp[0], out);
! 732: }
! 733: else
! 734: fputs(breaks[0], out);
! 735: }
! 736: free((char *)breaks);
! 737: return 0;
! 738: }
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