1 files changed, 63 insertions, 0 deletions
diff --git a/main.c b/main.c
index 3a476b7..b66c9c1 100644
--- a/main.c
+++ b/main.c
@@ -22,12 +22,75 @@
 #include "utf8.h"
 #include "str.h"
 
+#define ED_BUF_MAX 1024
+
+typedef enum {
+	ED_BUF_SCRATCH,
+	ED_BUF_FILE
+} EditBufType;
+
+typedef struct {
+	EditBufType type;
+	Arena arena;
+	Str path;
+	Txt txt;
+	TxtLoc cur;
+} EditBuf;
+
+typedef enum {
+	MODE_NORMAL,
+	MODE_INSERT
+} EditMode;
+
+typedef struct {
+	Arena scratch;
+	EditBuf buf[ED_BUF_MAX];
+	u32 bufn, bufi;
+	EditMode mode;
+	u32 count;
+} Editor;
+
 Arena scratch = { 0 };
 Txt txt = { 0 };
 TxtLoc cur = { 0 };
 int mode = 0;
 u32 count = 0;
 
+int ed_buf_new(Editor *e, const char *path) {
+	if (e->bufn == ED_BUF_MAX) return -1;
+	u32 i = e->bufn;
+	EditBuf b = { 0 };
+	b.arena = arena_init(1L << 30);
+	if (path) {
+		b.path = str_dup(str_from_cstr(path), &b.arena);
+		b.type = ED_BUF_FILE;
+		txt_load(&b.txt, path);
+	} else {
+		b.path = S("*scratch*");
+		b.type = ED_BUF_SCRATCH;
+		txt_load_empty(&b.txt);
+	}
+	b.cur = txt_end(&b.txt);
+	return i;
+}
+
+void ed_buf_free(EditBuf *b) {
+	txt_free(&b->txt);
+	arena_free(&b->arena);
+}
+
+void ed_init(Editor *e) {
+	memset(e, 0, sizeof(Editor));
+	e->scratch = arena_init(1L << 30),
+	e->bufi = ed_buf_new(e, NULL);
+}
+
+void ed_fini(Editor *e) {
+	for (u32 i = 0; i < e->bufn; i++) {
+		ed_buf_free(&e->buf[i]);
+	}
+}
+
 static inline int is_space(u32 c) {
 	return c <= 0x20 && c != 0;
 }