Added file reading capability.

include/name_string.h

@@ -19,7 +19,8 @@ typedef uint_least8_t strlen_t;
  * than 255 characters, the string shall be truncated to make room for the null
  * byte.
  */
-typedef struct NAME_STR {
+typedef struct NAME_STR
+{
     char *c_str;
     strlen_t len;
 } string;

src/main.c

@@ -52,7 +52,7 @@ void print_vector(string_vector *vector)
 {
     for(uint32 index = 0; index < vector->size; index++)
     {
-        printf("%s", vector->array[index]->c_str);
+        printf("%s\n", vector->array[index]->c_str);
     }
 }
 
@@ -84,34 +84,70 @@ void perform_length_alphabet_sort(string_vector *vector)
     qsort((void *) vector->array, vector->size, sizeof(string *), compare);
 }
 
-int main(int argc, char **argv)
+char *read_line(FILE *file, int *eof_reached)
 {
-    char *tests[10] = {
-            "What    ",
-            "Where",
-            "  When",
-            "  Why  ",
-            "How",
-            "Test1",
-            "Test2",
-            "Anne",
-            "Jill",
-            "Bob"
-    };
+    char *lineBuffer = malloc(sizeof(char) * MAX_STR_SIZE + 1);
 
-    string_vector *vector = create_vector(0);
-
-    for(uint32 index = 0; index < 10; index++)
+    int ch = getc(file);
+    int count = 0;
+    while((ch != '\n') && (ch != EOF))
     {
-        string *str = create_from_cstr(tests[index]);
+        if(count == MAX_STR_SIZE)
+        {
+            fprintf(stderr,
+                    "Encounted name that is too long. Max name length is %d!\n",
+                    MAX_STR_SIZE);
+            exit(2);
+        }
+        lineBuffer[count] = (char)ch;
+        count++;
+        ch = getc(file);
+    }
+    if(ch == EOF)
+    {
+        *eof_reached = 1;
+    }
+    lineBuffer[count] = '\0';
+    return lineBuffer;
+}
+
+void read_file_into_vector(FILE *file, string_vector *vector)
+{
+    if(!file || !vector)
+    {
+        fprintf(stderr, "Invalid File Or Memory Error\n");
+        return;
+    }
+    int eof_reached = 0;
+    while(!eof_reached)
+    {
+        char *line = read_line(file, &eof_reached);
+        string *str = create_from_cstr(line);
+        free(line);
+
         strip(str);
+        if(str->len == 0)
+        {
+            destroy_string(str);
+            continue;
+        }
         vector_add(vector, str);
     }
+}
+
+int main(int argc, char **argv)
+{
+    if(argc < 2)
+    {
+        fprintf(stderr, "Usage: name_sort <input_file>\n");
+        return 1;
+    }
+    FILE *file = fopen(argv[1], "r");
+
+    string_vector *vector = create_vector(0);
+    read_file_into_vector(file, vector);
 
-    print_vector(vector);
     perform_length_alphabet_sort(vector);
-    printf("\nSorted Array\n------------\n");
     print_vector(vector);
-
     return 0;
 }