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    1 /* ansi2knr.c */
    2 /* Convert ANSI C function definitions to K&R ("traditional C") syntax */
    3 
    4 /*
    5 ansi2knr is distributed in the hope that it will be useful, but WITHOUT ANY
    6 WARRANTY.  No author or distributor accepts responsibility to anyone for the
    7 consequences of using it or for whether it serves any particular purpose or
    8 works at all, unless he says so in writing.  Refer to the GNU General Public
    9 License (the "GPL") for full details.
   10 
   11 Everyone is granted permission to copy, modify and redistribute ansi2knr,
   12 but only under the conditions described in the GPL.  A copy of this license
   13 is supposed to have been given to you along with ansi2knr so you can know
   14 your rights and responsibilities.  It should be in a file named COPYLEFT.
   15 [In the IJG distribution, the GPL appears below, not in a separate file.]
   16 Among other things, the copyright notice and this notice must be preserved
   17 on all copies.
   18 
   19 We explicitly state here what we believe is already implied by the GPL: if
   20 the ansi2knr program is distributed as a separate set of sources and a
   21 separate executable file which are aggregated on a storage medium together
   22 with another program, this in itself does not bring the other program under
   23 the GPL, nor does the mere fact that such a program or the procedures for
   24 constructing it invoke the ansi2knr executable bring any other part of the
   25 program under the GPL.
   26 */
   27 
   28 /*
   29 ---------- Here is the GNU GPL file COPYLEFT, referred to above ----------
   30 ----- These terms do NOT apply to the JPEG software itself; see README ------
   31 
   32             GHOSTSCRIPT GENERAL PUBLIC LICENSE
   33             (Clarified 11 Feb 1988)
   34 
   35  Copyright (C) 1988 Richard M. Stallman
   36  Everyone is permitted to copy and distribute verbatim copies of this
   37  license, but changing it is not allowed.  You can also use this wording
   38  to make the terms for other programs.
   39 
   40   The license agreements of most software companies keep you at the
   41 mercy of those companies.  By contrast, our general public license is
   42 intended to give everyone the right to share Ghostscript.  To make sure
   43 that you get the rights we want you to have, we need to make
   44 restrictions that forbid anyone to deny you these rights or to ask you
   45 to surrender the rights.  Hence this license agreement.
   46 
   47   Specifically, we want to make sure that you have the right to give
   48 away copies of Ghostscript, that you receive source code or else can get
   49 it if you want it, that you can change Ghostscript or use pieces of it
   50 in new free programs, and that you know you can do these things.
   51 
   52   To make sure that everyone has such rights, we have to forbid you to
   53 deprive anyone else of these rights.  For example, if you distribute
   54 copies of Ghostscript, you must give the recipients all the rights that
   55 you have.  You must make sure that they, too, receive or can get the
   56 source code.  And you must tell them their rights.
   57 
   58   Also, for our own protection, we must make certain that everyone finds
   59 out that there is no warranty for Ghostscript.  If Ghostscript is
   60 modified by someone else and passed on, we want its recipients to know
   61 that what they have is not what we distributed, so that any problems
   62 introduced by others will not reflect on our reputation.
   63 
   64   Therefore we (Richard M. Stallman and the Free Software Foundation,
   65 Inc.) make the following terms which say what you must do to be allowed
   66 to distribute or change Ghostscript.
   67 
   68 
   69             COPYING POLICIES
   70 
   71   1. You may copy and distribute verbatim copies of Ghostscript source
   72 code as you receive it, in any medium, provided that you conspicuously
   73 and appropriately publish on each copy a valid copyright and license
   74 notice "Copyright (C) 1989 Aladdin Enterprises.  All rights reserved.
   75 Distributed by Free Software Foundation, Inc." (or with whatever year is
   76 appropriate); keep intact the notices on all files that refer to this
   77 License Agreement and to the absence of any warranty; and give any other
   78 recipients of the Ghostscript program a copy of this License Agreement
   79 along with the program.  You may charge a distribution fee for the
   80 physical act of transferring a copy.
   81 
   82   2. You may modify your copy or copies of Ghostscript or any portion of
   83 it, and copy and distribute such modifications under the terms of
   84 Paragraph 1 above, provided that you also do the following:
   85 
   86     a) cause the modified files to carry prominent notices stating
   87     that you changed the files and the date of any change; and
   88 
   89     b) cause the whole of any work that you distribute or publish,
   90     that in whole or in part contains or is a derivative of Ghostscript
   91     or any part thereof, to be licensed at no charge to all third
   92     parties on terms identical to those contained in this License
   93     Agreement (except that you may choose to grant more extensive
   94     warranty protection to some or all third parties, at your option).
   95 
   96     c) You may charge a distribution fee for the physical act of
   97     transferring a copy, and you may at your option offer warranty
   98     protection in exchange for a fee.
   99 
  100 Mere aggregation of another unrelated program with this program (or its
  101 derivative) on a volume of a storage or distribution medium does not bring
  102 the other program under the scope of these terms.
  103 
  104   3. You may copy and distribute Ghostscript (or a portion or derivative
  105 of it, under Paragraph 2) in object code or executable form under the
  106 terms of Paragraphs 1 and 2 above provided that you also do one of the
  107 following:
  108 
  109     a) accompany it with the complete corresponding machine-readable
  110     source code, which must be distributed under the terms of
  111     Paragraphs 1 and 2 above; or,
  112 
  113     b) accompany it with a written offer, valid for at least three
  114     years, to give any third party free (except for a nominal
  115     shipping charge) a complete machine-readable copy of the
  116     corresponding source code, to be distributed under the terms of
  117     Paragraphs 1 and 2 above; or,
  118 
  119     c) accompany it with the information you received as to where the
  120     corresponding source code may be obtained.  (This alternative is
  121     allowed only for noncommercial distribution and only if you
  122     received the program in object code or executable form alone.)
  123 
  124 For an executable file, complete source code means all the source code for
  125 all modules it contains; but, as a special exception, it need not include
  126 source code for modules which are standard libraries that accompany the
  127 operating system on which the executable file runs.
  128 
  129   4. You may not copy, sublicense, distribute or transfer Ghostscript
  130 except as expressly provided under this License Agreement.  Any attempt
  131 otherwise to copy, sublicense, distribute or transfer Ghostscript is
  132 void and your rights to use the program under this License agreement
  133 shall be automatically terminated.  However, parties who have received
  134 computer software programs from you with this License Agreement will not
  135 have their licenses terminated so long as such parties remain in full
  136 compliance.
  137 
  138   5. If you wish to incorporate parts of Ghostscript into other free
  139 programs whose distribution conditions are different, write to the Free
  140 Software Foundation at 675 Mass Ave, Cambridge, MA 02139.  We have not
  141 yet worked out a simple rule that can be stated here, but we will often
  142 permit this.  We will be guided by the two goals of preserving the free
  143 status of all derivatives of our free software and of promoting the
  144 sharing and reuse of software.
  145 
  146 Your comments and suggestions about our licensing policies and our
  147 software are welcome!  Please contact the Free Software Foundation,
  148 Inc., 675 Mass Ave, Cambridge, MA 02139, or call (617) 876-3296.
  149 
  150                NO WARRANTY
  151 
  152   BECAUSE GHOSTSCRIPT IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY
  153 NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW.  EXCEPT
  154 WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC, RICHARD
  155 M. STALLMAN, ALADDIN ENTERPRISES, L. PETER DEUTSCH, AND/OR OTHER PARTIES
  156 PROVIDE GHOSTSCRIPT "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
  157 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  158 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE
  159 ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF GHOSTSCRIPT IS WITH
  160 YOU.  SHOULD GHOSTSCRIPT PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
  161 NECESSARY SERVICING, REPAIR OR CORRECTION.
  162 
  163   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.
  164 STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., L. PETER DEUTSCH, ALADDIN
  165 ENTERPRISES, AND/OR ANY OTHER PARTY WHO MAY MODIFY AND REDISTRIBUTE
  166 GHOSTSCRIPT AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
  167 ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL, INCIDENTAL OR
  168 CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
  169 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
  170 INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A FAILURE OF THE
  171 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) GHOSTSCRIPT, EVEN IF YOU
  172 HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM
  173 BY ANY OTHER PARTY.
  174 
  175 -------------------- End of file COPYLEFT ------------------------------
  176 */
  177 
  178 /*
  179  * Usage:
  180     ansi2knr input_file [output_file]
  181  * If no output_file is supplied, output goes to stdout.
  182  * There are no error messages.
  183  *
  184  * ansi2knr recognizes function definitions by seeing a non-keyword
  185  * identifier at the left margin, followed by a left parenthesis,
  186  * with a right parenthesis as the last character on the line,
  187  * and with a left brace as the first token on the following line
  188  * (ignoring possible intervening comments).
  189  * It will recognize a multi-line header provided that no intervening
  190  * line ends with a left or right brace or a semicolon.
  191  * These algorithms ignore whitespace and comments, except that
  192  * the function name must be the first thing on the line.
  193  * The following constructs will confuse it:
  194  *  - Any other construct that starts at the left margin and
  195  *      follows the above syntax (such as a macro or function call).
  196  *  - Some macros that tinker with the syntax of the function header.
  197  */
  198 
  199 /*
  200  * The original and principal author of ansi2knr is L. Peter Deutsch
  201  * <ghost@aladdin.com>.  Other authors are noted in the change history
  202  * that follows (in reverse chronological order):
  203     lpd 96-01-21 added code to cope with not HAVE_CONFIG_H and with
  204         compilers that don't understand void, as suggested by
  205         Tom Lane
  206     lpd 96-01-15 changed to require that the first non-comment token
  207         on the line following a function header be a left brace,
  208         to reduce sensitivity to macros, as suggested by Tom Lane
  209         <tgl@sss.pgh.pa.us>
  210     lpd 95-06-22 removed #ifndefs whose sole purpose was to define
  211         undefined preprocessor symbols as 0; changed all #ifdefs
  212         for configuration symbols to #ifs
  213     lpd 95-04-05 changed copyright notice to make it clear that
  214         including ansi2knr in a program does not bring the entire
  215         program under the GPL
  216     lpd 94-12-18 added conditionals for systems where ctype macros
  217         don't handle 8-bit characters properly, suggested by
  218         Francois Pinard <pinard@iro.umontreal.ca>;
  219         removed --varargs switch (this is now the default)
  220     lpd 94-10-10 removed CONFIG_BROKETS conditional
  221     lpd 94-07-16 added some conditionals to help GNU `configure',
  222         suggested by Francois Pinard <pinard@iro.umontreal.ca>;
  223         properly erase prototype args in function parameters,
  224         contributed by Jim Avera <jima@netcom.com>;
  225         correct error in writeblanks (it shouldn't erase EOLs)
  226     lpd 89-xx-xx original version
  227  */
  228 
  229 /* Most of the conditionals here are to make ansi2knr work with */
  230 /* or without the GNU configure machinery. */
  231 
  232 #if HAVE_CONFIG_H
  233 # include <config.h>
  234 #endif
  235 
  236 #include <stdio.h>
  237 #include <ctype.h>
  238 
  239 #if HAVE_CONFIG_H
  240 
  241 /*
  242    For properly autoconfiguring ansi2knr, use AC_CONFIG_HEADER(config.h).
  243    This will define HAVE_CONFIG_H and so, activate the following lines.
  244  */
  245 
  246 # if STDC_HEADERS || HAVE_STRING_H
  247 #  include <string.h>
  248 # else
  249 #  include <strings.h>
  250 # endif
  251 
  252 #else /* not HAVE_CONFIG_H */
  253 
  254 /* Otherwise do it the hard way */
  255 
  256 # ifdef BSD
  257 #  include <strings.h>
  258 # else
  259 #  ifdef VMS
  260     extern int strlen(), strncmp();
  261 #  else
  262 #   include <string.h>
  263 #  endif
  264 # endif
  265 
  266 #endif /* not HAVE_CONFIG_H */
  267 
  268 #if STDC_HEADERS
  269 # include <stdlib.h>
  270 #else
  271 /*
  272    malloc and free should be declared in stdlib.h,
  273    but if you've got a K&R compiler, they probably aren't.
  274  */
  275 # ifdef MSDOS
  276 #  include <malloc.h>
  277 # else
  278 #  ifdef VMS
  279      extern char *malloc();
  280      extern void free();
  281 #  else
  282      extern char *malloc();
  283      extern int free();
  284 #  endif
  285 # endif
  286 
  287 #endif
  288 
  289 /*
  290  * The ctype macros don't always handle 8-bit characters correctly.
  291  * Compensate for this here.
  292  */
  293 #ifdef isascii
  294 #  undef HAVE_ISASCII       /* just in case */
  295 #  define HAVE_ISASCII 1
  296 #else
  297 #endif
  298 #if STDC_HEADERS || !HAVE_ISASCII
  299 #  define is_ascii(c) 1
  300 #else
  301 #  define is_ascii(c) isascii(c)
  302 #endif
  303 
  304 #define is_space(c) (is_ascii(c) && isspace(c))
  305 #define is_alpha(c) (is_ascii(c) && isalpha(c))
  306 #define is_alnum(c) (is_ascii(c) && isalnum(c))
  307 
  308 /* Scanning macros */
  309 #define isidchar(ch) (is_alnum(ch) || (ch) == '_')
  310 #define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_')
  311 
  312 /* Forward references */
  313 char *skipspace();
  314 int writeblanks();
  315 int test1();
  316 int convert1();
  317 
  318 /* The main program */
  319 int
  320 main(argc, argv)
  321     int argc;
  322     char *argv[];
  323 {   FILE *in, *out;
  324 #define bufsize 5000            /* arbitrary size */
  325     char *buf;
  326     char *line;
  327     char *more;
  328     /*
  329      * In previous versions, ansi2knr recognized a --varargs switch.
  330      * If this switch was supplied, ansi2knr would attempt to convert
  331      * a ... argument to va_alist and va_dcl; if this switch was not
  332      * supplied, ansi2knr would simply drop any such arguments.
  333      * Now, ansi2knr always does this conversion, and we only
  334      * check for this switch for backward compatibility.
  335      */
  336     int convert_varargs = 1;
  337 
  338     if ( argc > 1 && argv[1][0] == '-' )
  339       { if ( !strcmp(argv[1], "--varargs") )
  340           { convert_varargs = 1;
  341             argc--;
  342             argv++;
  343           }
  344         else
  345           { fprintf(stderr, "Unrecognized switch: %s\n", argv[1]);
  346             exit(1);
  347           }
  348       }
  349     switch ( argc )
  350        {
  351     default:
  352         printf("Usage: ansi2knr input_file [output_file]\n");
  353         exit(0);
  354     case 2:
  355         out = stdout;
  356         break;
  357     case 3:
  358         out = fopen(argv[2], "w");
  359         if ( out == NULL )
  360            {    fprintf(stderr, "Cannot open output file %s\n", argv[2]);
  361             exit(1);
  362            }
  363        }
  364     in = fopen(argv[1], "r");
  365     if ( in == NULL )
  366        {    fprintf(stderr, "Cannot open input file %s\n", argv[1]);
  367         exit(1);
  368        }
  369     fprintf(out, "#line 1 \"%s\"\n", argv[1]);
  370     buf = malloc(bufsize);
  371     line = buf;
  372     while ( fgets(line, (unsigned)(buf + bufsize - line), in) != NULL )
  373        {
  374 test:       line += strlen(line);
  375         switch ( test1(buf) )
  376            {
  377         case 2:         /* a function header */
  378             convert1(buf, out, 1, convert_varargs);
  379             break;
  380         case 1:         /* a function */
  381             /* Check for a { at the start of the next line. */
  382             more = ++line;
  383 f:          if ( line >= buf + (bufsize - 1) ) /* overflow check */
  384               goto wl;
  385             if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL )
  386               goto wl;
  387             switch ( *skipspace(more, 1) )
  388               {
  389               case '{':
  390                 /* Definitely a function header. */
  391                 convert1(buf, out, 0, convert_varargs);
  392                 fputs(more, out);
  393                 break;
  394               case 0:
  395                 /* The next line was blank or a comment: */
  396                 /* keep scanning for a non-comment. */
  397                 line += strlen(line);
  398                 goto f;
  399               default:
  400                 /* buf isn't a function header, but */
  401                 /* more might be. */
  402                 fputs(buf, out);
  403                 strcpy(buf, more);
  404                 line = buf;
  405                 goto test;
  406               }
  407             break;
  408         case -1:        /* maybe the start of a function */
  409             if ( line != buf + (bufsize - 1) ) /* overflow check */
  410               continue;
  411             /* falls through */
  412         default:        /* not a function */
  413 wl:         fputs(buf, out);
  414             break;
  415            }
  416         line = buf;
  417        }
  418     if ( line != buf )
  419       fputs(buf, out);
  420     free(buf);
  421     fclose(out);
  422     fclose(in);
  423     return 0;
  424 }
  425 
  426 /* Skip over space and comments, in either direction. */
  427 char *
  428 skipspace(p, dir)
  429     register char *p;
  430     register int dir;           /* 1 for forward, -1 for backward */
  431 {   for ( ; ; )
  432        {    while ( is_space(*p) )
  433           p += dir;
  434         if ( !(*p == '/' && p[dir] == '*') )
  435           break;
  436         p += dir;  p += dir;
  437         while ( !(*p == '*' && p[dir] == '/') )
  438            {    if ( *p == 0 )
  439               return p; /* multi-line comment?? */
  440             p += dir;
  441            }
  442         p += dir;  p += dir;
  443        }
  444     return p;
  445 }
  446 
  447 /*
  448  * Write blanks over part of a string.
  449  * Don't overwrite end-of-line characters.
  450  */
  451 int
  452 writeblanks(start, end)
  453     char *start;
  454     char *end;
  455 {   char *p;
  456     for ( p = start; p < end; p++ )
  457       if ( *p != '\r' && *p != '\n' )
  458         *p = ' ';
  459     return 0;
  460 }
  461 
  462 /*
  463  * Test whether the string in buf is a function definition.
  464  * The string may contain and/or end with a newline.
  465  * Return as follows:
  466  *  0 - definitely not a function definition;
  467  *  1 - definitely a function definition;
  468  *  2 - definitely a function prototype (NOT USED);
  469  *  -1 - may be the beginning of a function definition,
  470  *      append another line and look again.
  471  * The reason we don't attempt to convert function prototypes is that
  472  * Ghostscript's declaration-generating macros look too much like
  473  * prototypes, and confuse the algorithms.
  474  */
  475 int
  476 test1(buf)
  477     char *buf;
  478 {   register char *p = buf;
  479     char *bend;
  480     char *endfn;
  481     int contin;
  482 
  483     if ( !isidfirstchar(*p) )
  484       return 0;     /* no name at left margin */
  485     bend = skipspace(buf + strlen(buf) - 1, -1);
  486     switch ( *bend )
  487        {
  488        case ';': contin = 0 /*2*/; break;
  489        case ')': contin = 1; break;
  490        case '{': return 0;      /* not a function */
  491        case '}': return 0;      /* not a function */
  492        default: contin = -1;
  493        }
  494     while ( isidchar(*p) )
  495       p++;
  496     endfn = p;
  497     p = skipspace(p, 1);
  498     if ( *p++ != '(' )
  499       return 0;     /* not a function */
  500     p = skipspace(p, 1);
  501     if ( *p == ')' )
  502       return 0;     /* no parameters */
  503     /* Check that the apparent function name isn't a keyword. */
  504     /* We only need to check for keywords that could be followed */
  505     /* by a left parenthesis (which, unfortunately, is most of them). */
  506        {    static char *words[] =
  507            {    "asm", "auto", "case", "char", "const", "double",
  508             "extern", "float", "for", "if", "int", "long",
  509             "register", "return", "short", "signed", "sizeof",
  510             "static", "switch", "typedef", "unsigned",
  511             "void", "volatile", "while", 0
  512            };
  513         char **key = words;
  514         char *kp;
  515         int len = endfn - buf;
  516 
  517         while ( (kp = *key) != 0 )
  518            {    if ( strlen(kp) == len && !strncmp(kp, buf, len) )
  519               return 0; /* name is a keyword */
  520             key++;
  521            }
  522        }
  523     return contin;
  524 }
  525 
  526 /* Convert a recognized function definition or header to K&R syntax. */
  527 int
  528 convert1(buf, out, header, convert_varargs)
  529     char *buf;
  530     FILE *out;
  531     int header;         /* Boolean */
  532     int convert_varargs;    /* Boolean */
  533 {   char *endfn;
  534     register char *p;
  535     char **breaks;
  536     unsigned num_breaks = 2;    /* for testing */
  537     char **btop;
  538     char **bp;
  539     char **ap;
  540     char *vararg = 0;
  541 
  542     /* Pre-ANSI implementations don't agree on whether strchr */
  543     /* is called strchr or index, so we open-code it here. */
  544     for ( endfn = buf; *(endfn++) != '('; )
  545       ;
  546 top:    p = endfn;
  547     breaks = (char **)malloc(sizeof(char *) * num_breaks * 2);
  548     if ( breaks == 0 )
  549        {    /* Couldn't allocate break table, give up */
  550         fprintf(stderr, "Unable to allocate break table!\n");
  551         fputs(buf, out);
  552         return -1;
  553        }
  554     btop = breaks + num_breaks * 2 - 2;
  555     bp = breaks;
  556     /* Parse the argument list */
  557     do
  558        {    int level = 0;
  559         char *lp = NULL;
  560         char *rp;
  561         char *end = NULL;
  562 
  563         if ( bp >= btop )
  564            {    /* Filled up break table. */
  565             /* Allocate a bigger one and start over. */
  566             free((char *)breaks);
  567             num_breaks <<= 1;
  568             goto top;
  569            }
  570         *bp++ = p;
  571         /* Find the end of the argument */
  572         for ( ; end == NULL; p++ )
  573            {    switch(*p)
  574                {
  575                case ',':
  576                 if ( !level ) end = p;
  577                 break;
  578                case '(':
  579                 if ( !level ) lp = p;
  580                 level++;
  581                 break;
  582                case ')':
  583                 if ( --level < 0 ) end = p;
  584                 else rp = p;
  585                 break;
  586                case '/':
  587                 p = skipspace(p, 1) - 1;
  588                 break;
  589                default:
  590                 ;
  591                }
  592            }
  593         /* Erase any embedded prototype parameters. */
  594         if ( lp )
  595           writeblanks(lp + 1, rp);
  596         p--;            /* back up over terminator */
  597         /* Find the name being declared. */
  598         /* This is complicated because of procedure and */
  599         /* array modifiers. */
  600         for ( ; ; )
  601            {    p = skipspace(p - 1, -1);
  602             switch ( *p )
  603                {
  604                case ']':    /* skip array dimension(s) */
  605                case ')':    /* skip procedure args OR name */
  606                {    int level = 1;
  607                 while ( level )
  608                  switch ( *--p )
  609                    {
  610                    case ']': case ')': level++; break;
  611                    case '[': case '(': level--; break;
  612                    case '/': p = skipspace(p, -1) + 1; break;
  613                    default: ;
  614                    }
  615                }
  616                 if ( *p == '(' && *skipspace(p + 1, 1) == '*' )
  617                    {    /* We found the name being declared */
  618                     while ( !isidfirstchar(*p) )
  619                       p = skipspace(p, 1) + 1;
  620                     goto found;
  621                    }
  622                 break;
  623                default:
  624                 goto found;
  625                }
  626            }
  627 found:      if ( *p == '.' && p[-1] == '.' && p[-2] == '.' )
  628           { if ( convert_varargs )
  629               { *bp++ = "va_alist";
  630                 vararg = p-2;
  631               }
  632             else
  633               { p++;
  634                 if ( bp == breaks + 1 ) /* sole argument */
  635                   writeblanks(breaks[0], p);
  636                 else
  637                   writeblanks(bp[-1] - 1, p);
  638                 bp--;
  639               }
  640            }
  641         else
  642            {    while ( isidchar(*p) ) p--;
  643             *bp++ = p+1;
  644            }
  645         p = end;
  646        }
  647     while ( *p++ == ',' );
  648     *bp = p;
  649     /* Make a special check for 'void' arglist */
  650     if ( bp == breaks+2 )
  651        {    p = skipspace(breaks[0], 1);
  652         if ( !strncmp(p, "void", 4) )
  653            {    p = skipspace(p+4, 1);
  654             if ( p == breaks[2] - 1 )
  655                {    bp = breaks;    /* yup, pretend arglist is empty */
  656                 writeblanks(breaks[0], p + 1);
  657                }
  658            }
  659        }
  660     /* Put out the function name and left parenthesis. */
  661     p = buf;
  662     while ( p != endfn ) putc(*p, out), p++;
  663     /* Put out the declaration. */
  664     if ( header )
  665       { fputs(");", out);
  666         for ( p = breaks[0]; *p; p++ )
  667           if ( *p == '\r' || *p == '\n' )
  668             putc(*p, out);
  669       }
  670     else
  671       { for ( ap = breaks+1; ap < bp; ap += 2 )
  672           { p = *ap;
  673             while ( isidchar(*p) )
  674               putc(*p, out), p++;
  675             if ( ap < bp - 1 )
  676               fputs(", ", out);
  677           }
  678         fputs(")  ", out);
  679         /* Put out the argument declarations */
  680         for ( ap = breaks+2; ap <= bp; ap += 2 )
  681           (*ap)[-1] = ';';
  682         if ( vararg != 0 )
  683           { *vararg = 0;
  684             fputs(breaks[0], out);      /* any prior args */
  685             fputs("va_dcl", out);       /* the final arg */
  686             fputs(bp[0], out);
  687           }
  688         else
  689           fputs(breaks[0], out);
  690       }
  691     free((char *)breaks);
  692     return 0;
  693 }