2.11BSD#431 - /usr/src/usr.sbin/named/master/atod.y

   1: /*
   2:  * Convert mail alias file to nameserver DB format.
   3:  */
   4: 
   5: %{
   6: #include <stdio.h>
   7: #include <ctype.h>
   8: 
   9: char    yytext[BUFSIZ];
  10: int lineno = 1;
  11: %}
  12: 
  13: %token NAME
  14: 
  15: %start list
  16: 
  17: %%
  18: 
  19: list:         /* empty */
  20:         | list alias ':' a_list
  21:         ;
  22: 
  23: alias:        NAME {
  24:             printf("%s	IN	MB	UCB-VAX.ARPA\n", yytext);
  25:         }
  26:         ;
  27: 
  28: a_list:       aname
  29:         | a_list ',' aname
  30:         ;
  31: 
  32: aname:        NAME {
  33:             printf("	IN	MG	%s\n", yytext);
  34:         }
  35:         ;
  36: %%
  37: 
  38: yylex()
  39: {
  40:     register char *cp;
  41:     register int c;
  42:     char op[32];
  43: 
  44:     for (;;) {
  45:         c = getchar();
  46:     top:
  47:         switch (c) {
  48:         case '#':
  49:             while ((c = getchar()) != EOF && c != '\n')
  50:                 ;
  51:             goto top;
  52: 
  53:         case '\\':
  54:             if ((c = getchar()) == EOF) {
  55:                 c = '\\';
  56:                 break;
  57:             }
  58:             if (c != '\n') {
  59:                 ungetc(c, stdin);
  60:                 c = '\\';
  61:                 break;
  62:             }
  63:         case '\n':
  64:             lineno++;
  65:         case ' ':
  66:         case '\t':
  67:             continue;
  68: 
  69:         case EOF:
  70:         case ':':
  71:         case ',':
  72:             return (c);
  73:         }
  74:         cp = yytext;
  75:         do {
  76:             if (c == '"') {
  77:                 do {
  78:                     if (cp >= &yytext[BUFSIZ-1]) {
  79:                         yyerror("buffer overflow");
  80:                         break;
  81:                     }
  82:                     *cp++ = c;
  83:                 } while ((c = getchar()) != EOF && c != '"');
  84:             }
  85:             if (cp >= &yytext[BUFSIZ-1]) {
  86:                 yyerror("buffer overflow");
  87:                 break;
  88:             }
  89:             if (islower(c))
  90:                 c = toupper(c);
  91:             *cp++ = c;
  92:         } while ((c = getchar()) != EOF && !any(c, ",: \t\n"));
  93:         ungetc(c, stdin);
  94:         *cp = '\0';
  95:         return (NAME);
  96:     }
  97: }
  98: 
  99: any(c, s)
 100:     int c;
 101:     register char *s;
 102: {
 103:     while (*s)
 104:         if (c == *s++)
 105:             return (1);
 106:     return (0);
 107: }
 108: 
 109: main()
 110: {
 111:     yyparse();
 112: }
 113: 
 114: yyerror(s)
 115:     char *s;
 116: {
 117:     fprintf(stderr, "line %d: %s\n", lineno, s);
 118: }

Defined functions