1 files changed, 43 insertions, 0 deletions
diff --git a/txt.h b/txt.h
new file mode 100644
index 0000000..21712af
--- /dev/null
+++ b/txt.h
@@ -0,0 +1,43 @@
+#ifndef TXT_H
+#define TXT_H
+
+#include "dynarr.h"
+
+typedef enum : u8 {
+	TXT_SRC,
+	TXT_ADD
+} TxtBufIdx;
+
+typedef struct TxtPiece {
+	TxtBufIdx buf;
+	u32 ofs, n;
+} TxtPiece;
+
+typedef struct {
+	char *s;
+	u32 n, c;
+} TxtBuf;
+
+typedef struct {
+	u32 p, i;
+} TxtLoc;
+
+typedef struct {
+	DYNARR(TxtPiece) ptbl;
+	TxtBuf buf[2];
+	u32 len;
+} Txt;
+
+TxtLoc txt_at(Txt *b, u32 cur);
+
+u32 txt_split_piece(Txt *b, u32 pi, u32 i);
+void txt_remove_piece(Txt *b, u32 pi);
+void txt_insert_piece(Txt *b, u32 pi, TxtBufIdx buf, u32 ofs, u32 n);
+void txt_buf_append(Txt *b, TxtBufIdx bi, const char *s, u32 n);
+
+u32 txt_insert(Txt *b, u32 cur, const char *s, u32 n);
+u32 txt_insert_c(Txt *b, u32 cur, char ch);
+u32 txt_delete(Txt *b, u32 cur, u32 n);
+int txt_open(Txt *b, const char *path);
+
+#endif