A01639224-homework-07

labs/07/chatbot.l

@@ -0,0 +1,30 @@
+%{
+#include "y.tab.h"
+%}
+
+%%
+
+hello                           { return HELLO; }
+hi                              { return HELLO; }
+hey                             { return HELLO; }
+goodbye                         { return GOODBYE; }
+bye                             { return GOODBYE; }
+time                            { return TIME; }
+what[' ']is[' ']the[' ']time    { return TIME; }
+what[' ']time[' ']is[' ']it     { return TIME; }
+name                            { return NAME; }
+what[' ']is[' ']your[' ']name   { return NAME; }
+weather                         { return WEATHER; }
+what[' ']is[' ']the[' ']weather { return WEATHER; }
+how[' ']are[' ']you             { return MOOD; }
+how[' ']are[' ']you[' ']doing   { return MOOD; }
+help                            { return HELP; }
+\n                              { return 0; }  /* End of input on newline */
+
+.                               { return yytext[0]; }
+
+%%
+
+int yywrap() {
+    return 1;
+}

labs/07/chatbot.y

@@ -0,0 +1,80 @@
+%{
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+void yyerror(const char *s);
+int yylex(void);
+%}
+
+%token HELLO GOODBYE TIME NAME WEATHER MOOD HELP
+
+%%
+
+chatbot : greeting
+        | farewell
+        | time_query
+        | name_query
+        | weather_query
+        | mood_query
+        | help_query
+        ;
+
+greeting : HELLO { printf("MarIA: Hello! How can I help you today?\n"); }
+         ;
+
+farewell : GOODBYE { printf("MarIA: Goodbye! Have a great day!\n"); }
+         ;
+
+time_query : TIME { 
+            time_t now = time(NULL);
+            struct tm *local = localtime(&now);
+            printf("MarIA: The current time is %02d:%02d.\n", local->tm_hour, local->tm_min);
+         }
+       ;
+
+name_query : NAME {
+            printf("MarIA: My name is MarIA, nice to meet you!\n");
+         }
+        ;
+
+weather_query : WEATHER { 
+            int status = system("curl -s wttr.in > /dev/null");
+            if (status == 0) {
+                printf("MarIA: Here's the weather in Guadalajara, Mexico:\n");
+                system("curl -s wttr.in/Guadalajara,Mexico | sed -n '3,7p'");
+            } else {
+                printf("MarIA: There seems to be an issue. Maybe try again later?\n");
+            }
+         }
+       ;
+
+mood_query : MOOD {
+            printf("MarIA: I'm fine, thanks for asking.\n");
+         }
+        ;
+
+help_query : HELP {
+            printf("MarIA: You can\n");
+            printf("        • Greet me\n");
+            printf("        • Ask my name\n");
+            printf("        • Ask how I am doing\n");
+            printf("        • Ask for the time\n");
+            printf("        • Ask for the weather\n");
+            printf("        • Say goodbye\n");
+         }
+        ;
+
+%%
+
+int main() {
+    printf("MarIA: Hi, I'm MarIA! Type 'help' to see what you can ask me.\n");
+    while (yyparse() == 0) {
+        // Loop until end of input
+    }
+    return 0;
+}
+
+void yyerror(const char *s) {
+    fprintf(stderr, "MarIA: I didn't understand that.\n");
+}