1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 #pragma ident "%Z%%M% %I% %E% SMI"
41
42 /*LINTLIBRARY*/
43
44 #include <stdlib.h>
45 #include <sys/types.h>
46 #include "curses_inc.h"
47
48 /*
49 * Figure out (roughly) how much each of these capabilities costs.
50 * In the parameterized cases, we just take a typical case and
51 * use that value. This is done only once at startup, since it
52 * would be too expensive for intensive use.
53 */
54
55 static int _cost_fn(char *, int);
56
57 static short offsets[] = {
58 52, /* insert_character, */
59 21, /* delete_character, */
60 12, /* cursor_home, */
61 18, /* cursor_to_ll, */
62 14, /* cursor_left, */
63 17, /* cursor_right, */
64 11, /* cursor_down, */
65 19, /* cursor_up, */
66 2, /* carriage_return, */
67 134, /* tab, */
68 0, /* back_tab, */
69 6, /* clr_eol, */
70 269, /* clr_bol, */
71 #define FIRST_LOOP 13
72 108, /* parm_ich, */
73 105, /* parm_dch, */
74 111, /* parm_left_cursor, */
75 114, /* parm_up_cursor, */
76 107, /* parm_down_cursor, */
77 112, /* parm_right_cursor, */
78 #define SECOND_LOOP 19
79 };
80
81 void
_init_costs(void)82 _init_costs(void)
83 {
84 short *costptr = &(SP->term_costs.icfixed);
85 char **str_array = (char **) cur_strs;
86 int i = 0;
87 char save_xflag = xon_xoff;
88
89 xon_xoff = 0;
90 /*
91 * This next block of code is actually correct in that it takes into
92 * account many things that wrefresh has to keep figuring in the function
93 * _useidch. Wrefresh MUST be changed (in the words of Tony Hansen) !!!
94 *
95 * Wrefresh has been changed (in my words -Phong Vo) !!!!
96 */
97 *costptr++ = ((enter_insert_mode) && (exit_insert_mode)) ?
98 _cost_fn(enter_insert_mode, 0) + _cost_fn(exit_insert_mode, 0) : 0;
99
100 *costptr++ = ((enter_delete_mode) && (exit_delete_mode)) ?
101 _cost_fn(enter_delete_mode, 0) + _cost_fn(exit_delete_mode, 0) : 0;
102
103 while (i < FIRST_LOOP)
104 *costptr++ = _cost_fn(str_array[offsets[i++]], 1);
105
106 while (i < SECOND_LOOP)
107 *costptr++ = _cost_fn(tparm_p1(str_array[offsets[i++]], 10), 1);
108
109 *costptr++ = _cost_fn(tparm_p2(cursor_address, 8, 10), 1);
110 *costptr++ = _cost_fn(tparm_p1(row_address, 8), 1);
111
112 xon_xoff = save_xflag;
113 #ifdef DEBUG
114 if (outf) {
115 fprintf(outf, "icfixed %d=%d+%d\n", _COST(icfixed),
116 _cost_fn(enter_insert_mode, 0),
117 _cost_fn(exit_insert_mode, 0));
118 fprintf(outf, "from ich1 %x '%s' %d\n", insert_character,
119 insert_character, _cost_fn(insert_character, 1));
120 fprintf(outf, "ip %x '%s' %d\n", insert_padding,
121 insert_padding, _cost_fn(insert_padding, 1));
122 fprintf(outf, "dcfixed %d\n", _COST(dcfixed));
123 }
124 #endif /* DEBUG */
125 /*FALLTHROUGH*/
126 }
127
128 static int counter = 0;
129 int
130 /* ARGSUSED */
_countchar(char dummy)131 _countchar(char dummy)
132 {
133 counter++;
134 return (0);
135 }
136
137 /*
138 * Figure out the _COST in characters to print this string.
139 * Due to padding, we can't just use strlen, so instead we
140 * feed it through tputs and trap the results.
141 * Even if the terminal uses xon/xoff handshaking, count the
142 * pad chars here since they estimate the real time to do the
143 * operation, useful in calculating costs.
144 */
145
146 static int
_cost_fn(char * str,int affcnt)147 _cost_fn(char *str, int affcnt)
148 {
149 if (str == NULL)
150 return (LARGECOST);
151 counter = 0;
152 (void) tputs(str, affcnt, _countchar);
153 return (counter);
154 }
155