fixed some bugs in c versiosn

final/editor.c

@@ -9,7 +9,7 @@ typedef struct {
     int screen_line;
     int screen_col;
     bool editmode;
-    String* buffer;
+    String_t* buffer;
 } Editor;
 
 Editor new_editor() {
@@ -18,7 +18,13 @@ Editor new_editor() {
     e.screen_line = 0;
     e.screen_col = 0;
     e.editmode = false;
-    e.buffer = NULL;
+    
+    String_t lines = str_from_chars("");
+    e.buffer = str_lines(&lines, &e.lines);
+    str_dealloc(&lines);
+
+    addstr("");
+
     return e;
 }
 
@@ -29,12 +35,18 @@ Editor editor_from(char* input_string) {
     e.screen_line = 0;
     e.screen_col = 0;
     e.editmode = false;
-    e.buffer = NULL;
+    
+    String_t lines = str_from_chars(input_string);
+    e.buffer = str_lines(&lines, &e.lines);
+    str_dealloc(&lines);
+
+    addstr(input_string);
+    
     return e;
 }
 
 void move_cursor(Editor* self, int x, int y) {
-    if (x != 0
+    if (y != 0
         && self->screen_line + y >= 0
         && self->screen_line + y <= self->lines) 
     {
@@ -45,6 +57,7 @@ void move_cursor(Editor* self, int x, int y) {
         }
     } else if (self->screen_col + x < 0) {
         if (self->screen_line - 1 >= 0) {
+            self->screen_line -= 1;
             self->screen_col = str_len(&self->buffer[self->screen_line]);
         }
     } else if (self->screen_col + x > str_len(&self->buffer[self->screen_line])) {
@@ -70,13 +83,13 @@ void addchar(Editor* self, char c) {
     if (self->screen_line == self->lines) {
         // reallocate self->buffer to be 1 larger
         self->lines++;
-        self->buffer = realloc(self->buffer, sizeof(String) * (self->lines + 1));
+        self->buffer = realloc(self->buffer, sizeof(String_t) * (self->lines + 1));
     }
     str_insert(&self->buffer[self->screen_line], self->screen_col, c);
     move_cursor(self, 1, 0);
 }
 
-String* to_string(Editor* self) {
+String_t* to_string(Editor* self) {
 
 }