insert mode bug fix and cleanup

[unix-history] / usr / src / usr.bin / window / tt.h

diff --git a/usr/src/usr.bin/window/tt.h b/usr/src/usr.bin/window/tt.h
index cfc9aa3..23f82c4 100644 (file)
--- a/usr/src/usr.bin/window/tt.h
+++ b/usr/src/usr.bin/window/tt.h
@@ -1,33 +1,111 @@
 /*
 /*

- *     @(#)tt.h        3.3 83/08/15
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *     @(#)tt.h        3.23 (Berkeley) %G%

  */
 
  */
 

+/*
+ * Interface structure for the terminal drivers.
+ */

 struct tt {
 struct tt {

-       int (*tt_init)();
+               /* startup and cleanup */
+       int (*tt_start)();

        int (*tt_end)();
        int (*tt_end)();

-       int (*tt_setinsert)();
-       int (*tt_setmodes)();
+
+               /* terminal functions */

        int (*tt_move)();
        int (*tt_insline)();
        int (*tt_delline)();
        int (*tt_move)();
        int (*tt_insline)();
        int (*tt_delline)();

+       int (*tt_inschar)();
+       int (*tt_insspace)();

        int (*tt_delchar)();
        int (*tt_delchar)();

-       int (*tt_write)();
-       int (*tt_putc)();
-       int (*tt_blank)();
+       int (*tt_write)();              /* write a whole block */
+       int (*tt_putc)();               /* write one character */

        int (*tt_clreol)();
        int (*tt_clreos)();
        int (*tt_clear)();
        int (*tt_clreol)();
        int (*tt_clreos)();
        int (*tt_clear)();

-       int tt_nrow;
-       int tt_ncol;
-       char *tt_frame;
-};
+       int (*tt_scroll_down)();
+       int (*tt_scroll_up)();
+       int (*tt_setscroll)();          /* set scrolling region */
+       int (*tt_setmodes)();           /* set display modes */
+       int (*tt_set_token)();          /* define a token */
+       int (*tt_put_token)();          /* refer to a defined token */
+
+               /* internal variables */
+       char tt_modes;                  /* the current display modes */
+       char tt_nmodes;                 /* the new modes for next write */
+       char tt_insert;                 /* currently in insert mode */
+       int tt_row;                     /* cursor row */
+       int tt_col;                     /* cursor column */
+       int tt_scroll_top;              /* top of scrolling region */
+       int tt_scroll_bot;              /* bottom of scrolling region */

 
 

+               /* terminal info */
+       int tt_nrow;                    /* number of display rows */
+       int tt_ncol;                    /* number of display columns */
+       char tt_availmodes;             /* the display modes supported */
+       char tt_wrap;                   /* has auto wrap around */
+       char tt_retain;                 /* can retain below (db flag) */
+       int tt_ntoken;                  /* number of compression tokens */
+       int tt_token_min;               /* minimun token size */
+       int tt_token_max;               /* maximum token size */
+       int tt_set_token_cost;          /* cost in addition to string */
+       int tt_put_token_cost;          /* constant cost */
+
+               /* the frame characters */
+       short *tt_frame;
+};

 struct tt tt;
 
 struct tt tt;
 

+/*
+ * List of terminal drivers.
+ */

 struct tt_tab {
        char *tt_name;
        int tt_len;
        int (*tt_func)();
 };
 struct tt_tab {
        char *tt_name;
        int tt_len;
        int (*tt_func)();
 };

+extern struct tt_tab tt_tab[];

 
 

-struct tt_tab tt_tab[];
+/*
+ * Clean interface to termcap routines.
+ * Too may t's.
+ */
+char tt_strings[1024];         /* string buffer */
+char *tt_strp;                 /* pointer for it */
+
+struct tt_str {
+       char *ts_str;
+       int ts_n;
+};
+
+struct tt_str *tttgetstr();
+struct tt_str *ttxgetstr();    /* tgetstr() and expand delays */
+
+int tttputc();
+#define tttputs(s, n)  tputs((s)->ts_str, (n), tttputc)
+#define ttxputs(s)     ttwrite((s)->ts_str, (s)->ts_n)
+
+/*
+ * Buffered output without stdio.
+ * These variables have different meanings from the ww_ob* variabels.
+ * But I'm too lazy to think up different names.
+ */
+char tt_ob[512];
+char *tt_obp;
+char *tt_obe;
+#define ttputc(c)      (tt_obp < tt_obe ? (*tt_obp++ = (c)) \
+                               : (ttflush(), *tt_obp++ = (c)))