Read from files

main.c

@@ -8,10 +8,6 @@
 #define MASTER 0
 #define DEFAULT_TAG 17
 
-char *read_text();
-
-char *read_pattern();
-
 void find_end(int, char *, char *, int **, int *);
 
 void apply_shift(int, int *, int);
@@ -31,12 +27,12 @@ int main() {
     MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 
     if (rank == MASTER) {
-        text = read_text();
-        pattern = read_pattern();
+        text = read_file("data/text.txt", &text_len);
+        pattern = read_file("data/pattern.txt", &pattern_len);
+
         printf("text: %s\n", text);
         printf("pattern: %s\n", pattern);
-        text_len = strlen(text);
-        pattern_len = strlen(pattern);
+
         private_text_len = text_len / size;
         remain = text_len % size;
 
@@ -130,9 +126,8 @@ int main() {
     }
 }
 
-char *read_text() {
-    // TODO
-    return "ciaoooooo mamma come stai???";
+char *read_text(int *len) {
+    return read_file("data/text.txt", len);
 }
 
 char *read_pattern() {
@@ -146,6 +141,7 @@ void find_end(int residue, char *pattern, char *text, int **matches, int *match_
     int text_len = strlen(text);
     int pattern_len = strlen(pattern);
 
+    // TODO: match splitted on 3+ node
     if (pattern_len - residue > text_len) return;
 
     while (pattern_index < pattern_len && pattern[pattern_index] == text[text_index]) {
@@ -174,3 +170,4 @@ int sum_array(int *array, int size) {
 
     return sum;
 }
+

util.c

@@ -1,7 +1,11 @@
 #include <stdio.h>
+#include <malloc.h>
 
 void print_array(int *array, int length) {
-    if (length == 0) return;
+    if (length == 0) {
+        printf("\n");
+        return;
+    }
 
     printf("|");
 
@@ -10,3 +14,20 @@ void print_array(int *array, int length) {
     }
     printf("\n");
 }
+
+
+char *read_file(char *filepath, int *len) {
+    FILE *f = fopen(filepath, "r");
+
+    fseek(f, 0, SEEK_END);
+    *len = ftell(f);
+    fseek(f, 0, SEEK_SET);
+
+    char *content = (char *) malloc(sizeof(char) * (*len + 1));
+    fread(content, 1, *len, f);
+    content[*len] = '\0';
+
+    fclose(f);
+
+    return content;
+}

util.h

@@ -3,4 +3,6 @@
 
 void print_array(int *, int);
 
+char *read_file(char *filepath, int *len);
+
 #endif //KMP_UTIL_H