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Annotation of 41BSD/cmd/cifplot/pat.l, revision 1.1

1.1     ! root        1: %{
        !             2: /*******************************************************************
        !             3: *                                                                  *
        !             4: *    File: CIFPLOT/pat.l                                           *
        !             5: *    Written by Dan Fitzpatrick                                    *
        !             6: *    copyright 1980 -- Regents of the University of California     *
        !             7: *                                                                  *
        !             8: ********************************************************************/
        !             9: 
        !            10: #define STRING  2
        !            11: #define INTEGER 1
        !            12: 
        !            13: #undef input()
        !            14: #undef unput(x)
        !            15: #define input()  (((pat_ch = getc(patfile)) == EOF) ? 0:pat_ch)
        !            16: #define unput(x)  ungetc(x,patfile)
        !            17: 
        !            18: extern int patval;
        !            19: extern char *patstr;
        !            20: extern FILE *patfile;
        !            21: 
        !            22: char pat_ch;
        !            23: int lncnt = 1;
        !            24: %}
        !            25: 
        !            26: %%
        !            27: \"[^\"\n]*\"   { patstr = (char *) unquote(&(yytext[0])); return(STRING); }
        !            28: 0[0-7]*                { sscanf(&(yytext[0]),"%o",&patval); return(INTEGER); }
        !            29: 0x[0-9a-fA-F]+ { sscanf(&(yytext[2]),"%x",&patval); return(INTEGER); }
        !            30: 0X[0-9a-fA-F]+ { sscanf(&(yytext[2]),"%x",&patval); return(INTEGER); }
        !            31: [1-9][0-9]*    { sscanf(&(yytext[0]),"%d",&patval); return(INTEGER); }
        !            32: [\ \t","";""{""}"]+    {}
        !            33: \n             { lncnt++; }
        !            34: .              { fprintf(stderr,"Unknown character(%o) on line %d in pattern file\n",yytext[0],lncnt);
        !            35:                  abort();      }
        !            36: %%

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