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Diff for /OpenXM_contrib/gmp/Attic/ansi2knr.c between version 1.1 and 1.1.1.2

version 1.1, 2000/09/09 14:12:13 version 1.1.1.2, 2003/08/25 16:05:56
Line 1 
Line 1 
 /* Copyright (C) 1989, 1997, 1998, 1999 Aladdin Enterprises.  All rights reserved. */  /* Copyright (C) 1989, 2000 Aladdin Enterprises.  All rights reserved. */
   
 /*$Id$*/  /*$Id$*/
 /* Convert ANSI C function definitions to K&R ("traditional C") syntax */  /* Convert ANSI C function definitions to K&R ("traditional C") syntax */
Line 37  program under the GPL.
Line 37  program under the GPL.
  * There are no error messages.   * There are no error messages.
  *   *
  * ansi2knr recognizes function definitions by seeing a non-keyword   * ansi2knr recognizes function definitions by seeing a non-keyword
  * identifier at the left margin, followed by a left parenthesis,   * identifier at the left margin, followed by a left parenthesis, with a
  * with a right parenthesis as the last character on the line,   * right parenthesis as the last character on the line, and with a left
  * and with a left brace as the first token on the following line   * brace as the first token on the following line (ignoring possible
  * (ignoring possible intervening comments), except that a line   * intervening comments and/or preprocessor directives), except that a line
  * consisting of only   * consisting of only
  *      identifier1(identifier2)   *      identifier1(identifier2)
  * will not be considered a function definition unless identifier2 is   * will not be considered a function definition unless identifier2 is
  * the word "void", and a line consisting of   * the word "void", and a line consisting of
  *      identifier1(identifier2, <<arbitrary>>)   *      identifier1(identifier2, <<arbitrary>>)
  * will not be considered a function definition.   * will not be considered a function definition.
  * ansi2knr will recognize a multi-line header provided   * ansi2knr will recognize a multi-line header provided that no intervening
  * that no intervening line ends with a left or right brace or a semicolon.   * line ends with a left or right brace or a semicolon.  These algorithms
  * These algorithms ignore whitespace and comments, except that   * ignore whitespace, comments, and preprocessor directives, except that
  * the function name must be the first thing on the line.   * the function name must be the first thing on the line.  The following
  * The following constructs will confuse it:   * constructs will confuse it:
  *      - Any other construct that starts at the left margin and   *      - Any other construct that starts at the left margin and
  *          follows the above syntax (such as a macro or function call).   *          follows the above syntax (such as a macro or function call).
  *      - Some macros that tinker with the syntax of function headers.   *      - Some macros that tinker with the syntax of function headers.
Line 61  program under the GPL.
Line 61  program under the GPL.
  * The original and principal author of ansi2knr is L. Peter Deutsch   * The original and principal author of ansi2knr is L. Peter Deutsch
  * <ghost@aladdin.com>.  Other authors are noted in the change history   * <ghost@aladdin.com>.  Other authors are noted in the change history
  * that follows (in reverse chronological order):   * that follows (in reverse chronological order):
   
           lpd 2000-04-12 backs out Eggert's changes because of bugs:
           - concatlits didn't declare the type of its bufend argument;
           - concatlits didn't't recognize when it was inside a comment;
           - scanstring could scan backward past the beginning of the string; when
           - the check for \ + newline in scanstring was unnecessary.
   
           2000-03-05  Paul Eggert  <eggert@twinsun.com>
   
           Add support for concatenated string literals.
           * ansi2knr.c (concatlits): New decl.
           (main): Invoke concatlits to concatenate string literals.
           (scanstring): Handle backslash-newline correctly.  Work with
           character constants.  Fix bug when scanning backwards through
           backslash-quote.  Check for unterminated strings.
           (convert1): Parse character constants, too.
           (appendline, concatlits): New functions.
           * ansi2knr.1: Document this.
   
           lpd 1999-08-17 added code to allow preprocessor directives
                   wherever comments are allowed
         lpd 1999-04-12 added minor fixes from Pavel Roskin          lpd 1999-04-12 added minor fixes from Pavel Roskin
                 <pavel_roskin@geocities.com> for clean compilation with                  <pavel_roskin@geocities.com> for clean compilation with
                 gcc -W -Wall                  gcc -W -Wall
Line 196  program under the GPL.
Line 217  program under the GPL.
 #define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_')  #define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_')
   
 /* Forward references */  /* Forward references */
   char *ppdirforward();
   char *ppdirbackward();
 char *skipspace();  char *skipspace();
 char *scanstring();  char *scanstring();
 int writeblanks();  int writeblanks();
Line 298  f:   if ( line >= buf + (bufsize - 1) ) /* overflow ch
Line 321  f:   if ( line >= buf + (bufsize - 1) ) /* overflow ch
                           goto wl;                            goto wl;
                         if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL )                          if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL )
                           goto wl;                            goto wl;
                         switch ( *skipspace(more, 1) )                          switch ( *skipspace(ppdirforward(more), 1) )
                           {                            {
                           case '{':                            case '{':
                             /* Definitely a function header. */                              /* Definitely a function header. */
Line 349  wl:   fputs(buf, out);
Line 372  wl:   fputs(buf, out);
         return 0;          return 0;
 }  }
   
 /* Skip over whitespace and comments, in either direction. */  /*
    * Skip forward or backward over one or more preprocessor directives.
    */
 char *  char *
   ppdirforward(p)
       char *p;
   {
       for (; *p == '#'; ++p) {
           for (; *p != '\r' && *p != '\n'; ++p)
               if (*p == 0)
                   return p;
           if (*p == '\r' && p[1] == '\n')
               ++p;
       }
       return p;
   }
   char *
   ppdirbackward(p, limit)
       char *p;
       char *limit;
   {
       char *np = p;
   
       for (;; p = --np) {
           if (*np == '\n' && np[-1] == '\r')
               --np;
           for (; np > limit && np[-1] != '\r' && np[-1] != '\n'; --np)
               if (np[-1] == 0)
                   return np;
           if (*np != '#')
               return p;
       }
   }
   
   /*
    * Skip over whitespace, comments, and preprocessor directives,
    * in either direction.
    */
   char *
 skipspace(p, dir)  skipspace(p, dir)
     register char *p;      char *p;
     register int dir;                   /* 1 for forward, -1 for backward */      int dir;                    /* 1 for forward, -1 for backward */
 {       for ( ; ; )  {
            {    while ( is_space(*p) )      for ( ; ; ) {
                   p += dir;          while ( is_space(*p) )
                 if ( !(*p == '/' && p[dir] == '*') )              p += dir;
                   break;          if ( !(*p == '/' && p[dir] == '*') )
                 p += dir;  p += dir;              break;
                 while ( !(*p == '*' && p[dir] == '/') )          p += dir;  p += dir;
                    {    if ( *p == 0 )          while ( !(*p == '*' && p[dir] == '/') ) {
                           return p;     /* multi-line comment?? */              if ( *p == 0 )
                         p += dir;                  return p;       /* multi-line comment?? */
                    }              p += dir;
                 p += dir;  p += dir;          }
            }          p += dir;  p += dir;
         return p;      }
       return p;
 }  }
   
 /* Scan over a quoted string, in either direction. */  /* Scan over a quoted string, in either direction. */
 char *  char *
 scanstring(p, dir)  scanstring(p, dir)
     register char *p;      char *p;
     register int dir;      int dir;
 {  {
     for (p += dir; ; p += dir)      for (p += dir; ; p += dir)
         if (*p == '"' && p[-dir] != '\\')          if (*p == '"' && p[-dir] != '\\')
Line 412  writeblanks(start, end)
Line 473  writeblanks(start, end)
 int  int
 test1(buf)  test1(buf)
     char *buf;      char *buf;
 {       register char *p = buf;  {       char *p = buf;
         char *bend;          char *bend;
         char *endfn;          char *endfn;
         int contin;          int contin;
   
         if ( !isidfirstchar(*p) )          if ( !isidfirstchar(*p) )
           return 0;             /* no name at left margin */            return 0;             /* no name at left margin */
         bend = skipspace(buf + strlen(buf) - 1, -1);          bend = skipspace(ppdirbackward(buf + strlen(buf) - 1, buf), -1);
         switch ( *bend )          switch ( *bend )
            {             {
            case ';': contin = 0 /*2*/; break;             case ';': contin = 0 /*2*/; break;
Line 498  convert1(buf, out, header, convert_varargs)
Line 559  convert1(buf, out, header, convert_varargs)
     int header;                 /* Boolean */      int header;                 /* Boolean */
     int convert_varargs;        /* Boolean */      int convert_varargs;        /* Boolean */
 {       char *endfn;  {       char *endfn;
         register char *p;          char *p;
         /*          /*
          * The breaks table contains pointers to the beginning and end           * The breaks table contains pointers to the beginning and end
          * of each argument.           * of each argument.
Legend:
Removed from v.1.1  
changed lines
  Added in v.1.1.1.2
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