first working version of uuterm!

- at this point it is purely experimental. only ascii characters are
  visible (using builtin font) although all characters are processed.
- there are known bugs, including crashes.
- there are major missing features.
- but it works. ^_^

1 files changed, 100 insertions, 0 deletions

diff --git a/uuterm.h b/uuterm.h
new file mode 100644
index 0000000..f392bda
--- /dev/null
+++ b/uuterm.h
@@ -0,0 +1,100 @@
+/* uuterm, Copyright (C) 2006 Rich Felker; licensed under GNU GPL v2 only */
+
+#include <stddef.h>
+#include <wchar.h> /* for mbstate_t... */
+
+struct uucell
+{
+	unsigned short a;
+	unsigned char c[8];
+};
+
+struct uurow
+{
+	int idx;
+	int x1, x2; /* dirty region */
+	struct uucell cells[1];
+};
+
+#define UU_ATTR_DIM     0x0100
+#define UU_ATTR_UL      0x0200
+#define UU_ATTR_REV     0x0400
+
+#define UU_ATTR_BOLD    0x0008
+#define UU_ATTR_FG      0x0007
+
+#define UU_ATTR_BLINK   0x0080
+#define UU_ATTR_BG      0x0070
+
+struct uuterm
+{
+	struct uurow **rows;
+	int w, h;
+
+	// all members past this point are zero-filled on reset!
+	int reset;
+
+	// output state
+	int x, y;
+	int attr;
+	int sr_y1, sr_y2;
+	int ins  :1;
+	int am   :1;
+	int noam :1;
+
+	// input state
+	int ckp  :1;
+	int kp   :1;
+	char reslen;
+	char res[16];
+
+	// saved state
+	int save_x, save_y;
+	int save_attr, save_fg, save_bg;
+
+	// escape sequence processing
+	int esc;
+	unsigned param[16];
+	int nparam;
+
+	// multibyte parsing
+	mbstate_t mbs;
+};
+
+struct uudisp
+{
+	int cell_w, cell_h;
+	int w, h;
+	int inlen;
+	unsigned char *intext;
+	unsigned char inbuf[16];
+	int blink;
+	long priv[64];
+};
+
+#define UU_FULLWIDTH 0xfffe
+
+#define UU_ROW_SIZE(w) (sizeof(struct uurow) + (w)*sizeof(struct uucell))
+#define UU_BUF_SIZE(w, h) ( (h) * (sizeof(struct uurow *) * UU_ROW_SIZE((w))) )
+
+void uuterm_reset(struct uuterm *);
+void uuterm_replace_buffer(struct uuterm *, int, int, void *);
+void uuterm_stuff_byte(struct uuterm *, unsigned char);
+
+void uuterm_refresh_row(struct uudisp *, struct uurow *, int, int);
+
+int uu_combine_involution(unsigned, unsigned);
+
+int uudisp_open(struct uudisp *);
+int uudisp_fd_set(struct uudisp *, int, void *);
+void uudisp_next_event(struct uudisp *, void *);
+void uudisp_close(struct uudisp *);
+void uudisp_refresh(struct uudisp *, struct uuterm *);
+void uudisp_draw_glyph(struct uudisp *, int, int, const void *, int);
+
+void *uuterm_alloc(size_t);
+void uuterm_free(void *);
+void *uuterm_buf_alloc(int, int);
+
+void uutty_resize(int, int, int);
+int uutty_open(char **, int, int);