split some things out

defs.h

@@ -0,0 +1,69 @@
+#ifndef KE_DEFS_H
+#define KE_DEFS_H
+
+
+#include <termios.h>
+
+
+#define	TAB_STOP	8
+
+
+/*
+ * abuf is an append buffer.
+ */
+struct abuf {
+	char	*b;
+	int	 len;
+};
+
+#define ABUF_INIT	{NULL, 0}
+
+
+/*
+ * erow is an editor row
+ */
+struct erow {
+	char	*line;
+	char	*render;
+
+	int	 size;
+	int	 rsize;
+};
+
+
+static struct {
+	struct termios	 entry_term;
+	int		 rows, cols;
+	int		 curx, cury;
+	int		 rx;
+	int		 mode;
+	int		 nrows;
+	int		 rowoffs, coloffs;
+	struct erow	*row;
+	char		*filename;
+	int		 dirty;
+	int		 dirtyex;
+	char		 msg[80];
+	time_t		 msgtm;
+} editor;
+
+
+/*
+ * Function declarations.
+ */
+
+/* append buffer */
+void	ab_append(struct abuf *buf, const char *s, int len);
+void	ab_free(struct abuf *buf);
+
+
+/* editor row */
+int	erow_render_to_cursor(struct erow *row, int cx);
+int	erow_cursor_to_render(struct erow *row, int rx);
+void	erow_update(struct erow *row);
+void	erow_insert(int at, char *s, int len);
+void	erow_free(struct erow *row);
+
+
+
+#endif /* KE_DEFS_H */