Setup the assembler to use the new file reading code.

src/futil.c

@@ -5,16 +5,15 @@
 int ReadAllString(const char* path, char** content_ptr, size_t* bytes_read) {
     if (!path || !content_ptr || !bytes_read) return 0;
 
-    FILE *file;
-    file = fopen(path, "rb");
+    FILE *file = fopen(path, "rb");
 
     if (!file) {
         fprintf(stderr, "Failed to open '%s'. %s.\n", path, strerror(errno));
         return 0;
     }
 
-    char *content = NULL, *temp;
-    size_t used, capacity, read;
+    char *content = NULL, *temp = NULL;
+    size_t used = 0, capacity = 0, read = 0;
 
     while(1) {
         if (used + FUTIL_READ_SIZE + 1 > capacity) {

src/list.c

@@ -25,7 +25,7 @@ List* CreateList() {
 int AddListItem(const void *value, size_t size, List* list) {
     if (!list) return -1;
     if (!value) return -1;
-    if (size == 0) return - 1;
+    if (size == 0) return -1;
 
     if (list->capacity < list->size + 1) {
         void* ptr = realloc(list->content, sizeof(void*) * list->capacity * 2);

src/main.c

@@ -1,43 +1,31 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <sysexits.h>
 #include "../includes/list.h"
 #include "../includes/lexer.h"
 #include "../includes/parser.h"
-
-typedef struct {
-    char *opcode;
-    unsigned char count;
-    char** parameters;
-} Instruction;
+#include "../includes/futil.h"
 
 List* get_strings(const char*);
 
 int main(int argc, char* args[]) {
     if (argc == 1) {
-        printf("Input files required.\n");
-        return -1;
+        printf("Usage: assm <file1.asm>\n");
+        return EX_USAGE;
     }
 
-    FILE *file;
-    int line_count = 1;
-    char* line = NULL;
-    size_t len = 0;
-    ssize_t bytes_read;
+    char* source_code;
+    size_t bytes_read;
+
+    if (!ReadAllString(args[1], &source_code, &bytes_read)) return EX_IOERR;
+
+    char* token = strtok(source_code, "\n");
     int line_number = 1;
 
-    file = fopen(args[1], "r");
+    while(token != NULL) {
 
-    if (!file) {
-        printf("Failed to open '%s' for reading.\n", args[1]);
-        return 1;
-    }
-    
-    //getline() uses realloc() for the line parameter, so there shouldn't
-    //be any issue with memory leaks as long as the last time this function
-    //is called, line gets free()ed.
-    while((bytes_read = getline(&line, &len, file)) != -1) {
-        List* tokens = GetTokensFromLine(line);
+        List* tokens = GetTokensFromLine(token);
 
         if (line_number == 1 || line_number == 2) {
             ParseTokens(tokens);
@@ -53,10 +41,10 @@ int main(int argc, char* args[]) {
 
         DestroyList(tokens);
 
+        token = strtok(NULL, "\n");
+
         line_number++;
     }
 
-    fclose(file);
-
-    if (line) free(line);
+    free(source_code);
 }