Better cmdline args, start work on compiler

src/include/estr.h

@@ -0,0 +1,52 @@
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifndef ESTR_H
+#define ESTR_H
+
+/*
+
+    estr.h - Easy string manipulation
+    This library has macros to allow easier manipulation of strings. No longer shall
+    you have to malloc and realloc away to keep adding to your strings.
+
+    Usage:
+
+    Estr myString = CREATE_ESTR("my awesome string");
+    APPEND_ESTR(myString, " is so cool");
+    printf("%s\n", myString.str);
+
+*/
+
+#define CREATE_ESTR(instr) \
+    (Estr) { \
+        .str = instr,\
+        .size = strlen(instr),\
+        .shouldBeFreed = 0, \
+        .destroyed = 0 \
+    }
+
+#define APPEND_ESTR(estr, instr) { \
+    estr.size = estr.size + strlen(instr); \
+    char* tmp_ptr = malloc(estr.size + 1); \
+    if (tmp_ptr == NULL) printf("WARNING: Could not realloc estr " #estr "\n"); \
+    else { \
+        snprintf(tmp_ptr, estr.size + 1, "%s%s", estr.str, instr); \
+        if (estr.shouldBeFreed > 0) free(estr.str); \
+        estr.shouldBeFreed = 1; \
+        estr.str = tmp_ptr; \
+    } \
+}
+
+#define DESTROY_ESTR(estr) if (estr.shouldBeFreed > 0 && estr.destroyed < 1) free(estr.str); 
+
+typedef struct Estr {
+    char* str;
+    size_t size;
+    int8_t shouldBeFreed;
+    int8_t destroyed;
+} Estr; 
+
+#endif // ESTR_H