Mini_Shell/shell.l at main · Slim-Hady/Mini_Shell · GitHub

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%{
#include <stdio.h>
#include <string.h>
#include "y.tab.h"

int yyline = 1;
%}

%option noyywrap

%%

[ \t]+              { }

\n                  { yyline++; return NEWLINE; }

#.*                 { }

"<"                 { return LESS; }

">"                 { return GREAT; }

">>"                { return GREATGREAT; }

"|"                 { return PIPE; }

"&"                 { return AMPERSAND; }

"="                 { return EQUALS; }

\$[a-zA-Z_][a-zA-Z0-9_]* {
                      yylval.string = strdup(yytext);
                      return VARREF;
                    }

[a-zA-Z0-9_/.\-]+  {
                      yylval.string = strdup(yytext);
                      return WORD;
                    }

\"[^\"]*\"          {
                      yytext[strlen(yytext)-1] = '\0';
                      yylval.string = strdup(yytext + 1);
                      return WORD;
                    }

\'[^\']*\'          {
                      yytext[strlen(yytext)-1] = '\0';
                      yylval.string = strdup(yytext + 1);
                      return WORD;
                    }

.                   {
                      yylval.string = strdup(yytext);
                      return WORD;
                    }

%%