dist/ipf/tools/lex_var.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2002 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  */
   8
   9 extern  long            string_start;
  10 extern  long            string_end;
  11 extern  char            *string_val;
  12 extern  long            pos;
  13
  14 #define YY_INPUT(buf, result, max_size) \
  15         if (pos >= string_start && pos <= string_end) { \
  16                 buf[0] = string_val[pos - string_start]; \
  17                 pos++; \
  18                 result = 1; \
  19         } else if ( yy_current_buffer->yy_is_interactive ) \
  20                 { \
  21                 int c = '*', n; \
  22                 for ( n = 0; n < 1 && \
  23                              (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
  24                         buf[n] = (char) c; \
  25                 if ( c == '\n' ) \
  26                         buf[n++] = (char) c; \
  27                 if ( c == EOF && ferror( yyin ) ) \
  28                         YY_FATAL_ERROR( "input in flex scanner failed" ); \
  29                 result = n; \
  30                 pos++; \
  31                 } \
  32         else if ( ((result = fread( buf, 1, 1, yyin )) == 0) \
  33                   && ferror( yyin ) ) \
  34                 YY_FATAL_ERROR( "input in flex scanner failed" );
  35
  36 #ifdef input
  37 # undef input
  38 # define input() (((pos >= string_start) && (pos < string_end)) ? \
  39                   yysptr = yysbuf, string_val[pos++ - string_start] : \
  40                   ((yytchar = yysptr > yysbuf ? U(*--yysptr) : \
  41                    getc(yyin)) == 10 ? (pos++, yylineno++, yytchar) : \
  42                   yytchar) == EOF ? (pos++, 0) : (pos++, yytchar))
  43 #endif
  44
  45 #ifdef lex_input
  46 # undef lex_input
  47 # define lex_input() (((pos >= string_start) && (pos < string_end)) ? \
  48                   yysptr = yysbuf, string_val[pos++ - string_start] : \
  49                   ((yytchar = yysptr > yysbuf ? U(*--yysptr) : \
  50                    getc(yyin)) == 10 ? (pos++, yylineno++, yytchar) : \
  51                   yytchar) == EOF ? (pos++, 0) : (pos++, yytchar))
  52 #endif
  53
  54 #ifdef unput
  55 # undef unput
  56 # define unput(c) { if (pos > 0) pos--; \
  57                     yytchar = (c); if (yytchar == '\n') yylineno--; \
  58                     *yysptr++ = yytchar; }
  59 #endif
  60