all: at this point just read readme 😭

spaghetti code
equivalent spaghetti readme
spaghetti commit (wait no, this is actually descriptive)

src/efield.c

@@ -0,0 +1,64 @@
+#include <string.h>
+
+#include <efield.h>
+#include <ui.h>
+
+struct editable_field field_new(char* content) {
+  struct editable_field __efield;
+  if(content != NULL) {
+    __efield.length = __efield.pos = strlen(content);
+    memcpy(__efield.content, content, __efield.length);
+  } else {
+    field_trim(&__efield, 0);
+  }
+  return __efield;
+}
+
+void field_trim(struct editable_field *field, u_char pos) {
+  field->length = field->pos = pos;
+}
+
+void field_update(struct editable_field *field, char *update) {
+  u_char insert_len = strlen(update);
+  if (insert_len == 0)
+    return;
+
+  if (field->pos > field->length)
+    field->pos = field->length; // WTF
+  if (insert_len == 1) {
+    // backspace
+    if (*update == 127) {
+      if (field->pos < field->length) {
+        memcpy(&field->content[field->pos - 1], &field->content[field->pos],
+               field->length - field->pos);
+      }
+      (field->pos)--;
+      (field->length)--;
+      return;
+    }
+  }
+
+  // append
+  if (field->length + field->pos >= 255) {
+    print_err("field too long");
+  }
+  if (field->pos < field->length) {
+    // move with immediate buffer
+    memmove(&field->content[field->pos + insert_len], &field->content[field->pos],
+            field->length - field->pos);
+  }
+  memcpy(&field->content[field->pos], update, insert_len);
+
+  field->pos += insert_len;
+  field->length += insert_len;
+}
+
+// returns bool depending if it was able to "use" the seek
+bool field_seek(struct editable_field *field, char seek) {
+  if(field->length == 0) return false;
+
+  if(seek < 0 && -seek > field->pos) field->pos = 0;
+  else if(seek > 0 && 255 - field->pos < seek) field->pos = 255;
+  else field->pos += seek;
+  return true;
+}