Startpunkten

Lab2/lexer.l

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+/*
+ *  Laboration 2 i C och UNIX
+ *
+ *  Komplett shell
+ *  =========================================
+ *
+ *  Christian Ohlsson, di7chro@cse.kau.se
+ *  Stefan Sonesson, di7stes@cse.kau.se
+ *
+ *  Karlstads Universitet, 991209
+ *
+ *
+ *===========================================
+*/
+%{
+#include "tree.h"
+#include "y.tab.h"
+%}
+
+WORD	[a-zA-Z0-9_\-\./\*]+
+
+%%
+[ \t]+	{/*Käkar upp white-space*/}
+"\n"	{ insert(NULL); return NL;}
+"&"	{ insert(NULL); return AND;}
+"|"	{ insert(NULL); return PIPE;}
+";"	{ insert(NULL); return SEMI;}
+">"	{ insert(NULL); return GREAT;}
+"<"	{ insert(NULL); return LESS;}
+">>"	{ insert(NULL); return DBLARR;}
+"exit"	{ printf("OK, use the other stinky shell then...\n");exit(0);}
+{WORD}	{ yylval.txt=insert(yytext);return WORD;}
+.	      { fprintf(stderr,"What?\n",6);}
+%%
+