ras le bol

Who_robbed_Thibouvre/fundamentals/my_grep/my_grep.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <string.h>
+int my_grep(char *filename, char *expr){
+
+    FILE *file = fopen(filename, "r");
+    if(!file) return 2;
+
+    char buffer[2048];
+    int found = 0;
+    while(fgets(buffer, sizeof(buffer), file)){
+        
+        if(strstr(buffer, expr) != NULL){
+            printf("%s", buffer);
+
+            if(buffer[strlen(buffer) - 1] != '\n') printf("\n");
+            
+            found ++;
+        }
+    }
+    
+    fclose(file);
+
+    if (found != 0) return 1;
+    return 0; 
+}
+/*
+int main()
+{
+    printf("\n%d\n", my_grep("example.txt", "word"));
+    // Expected:
+    //This line contains words.
+    //And "words" contains "word".
+    //word
+    //1
+
+
+    putchar('\n');
+
+    printf("%d\n", my_grep("example.txt", "eqlijgber")); // Returns 0
+    printf("%d\n", my_grep("empty_file.txt", "word")); // Returns 0
+    printf("%d\n", my_grep("inexisting_file.txt", "word")); // Returns 2
+
+    putchar('\n');
+
+    // FLAG
+    //Try "grepping" the flag.csv file, by the credit card numbers you found in
+    //the previous flag.
+    //Then, only keep those which booked several entries.
+    
+    my_grep("flag.csv", "Put here the credit card numbers");
+    my_grep("flag.csv", "Put here the credit card numbers");
+    my_grep("flag.csv", "Put here the credit card numbers");
+    my_grep("flag.csv", "Put here the credit card numbers");
+    my_grep("flag.csv", "Put here the credit card numbers");
+
+    return 0;
+}
+*/