1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/****************************************************************************
* Copyright (c) 2006-2007,2010 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Thomas E. Dickey *
****************************************************************************/
/*
* Iterators for terminal databases.
*/
#include <curses.priv.h>
#include <tic.h>
MODULE_ID("$Id: db_iterator.c,v 1.9 2010/12/25 23:00:25 tom Exp $")
#define HaveTicDirectory _nc_globals.have_tic_directory
#define KeepTicDirectory _nc_globals.keep_tic_directory
#define TicDirectory _nc_globals.tic_directory
/*
* Record the "official" location of the terminfo directory, according to
* the place where we're writing to, or the normal default, if not.
*/
NCURSES_EXPORT(const char *)
_nc_tic_dir(const char *path)
{
if (!KeepTicDirectory) {
if (path != 0) {
TicDirectory = path;
HaveTicDirectory = TRUE;
} else if (!HaveTicDirectory && use_terminfo_vars()) {
char *envp;
if ((envp = getenv("TERMINFO")) != 0)
return _nc_tic_dir(envp);
}
}
return TicDirectory;
}
/*
* Special fix to prevent the terminfo directory from being moved after tic
* has chdir'd to it. If we let it be changed, then if $TERMINFO has a
* relative path, we'll lose track of the actual directory.
*/
NCURSES_EXPORT(void)
_nc_keep_tic_dir(const char *path)
{
_nc_tic_dir(path);
KeepTicDirectory = TRUE;
}
/*
* Process the list of :-separated directories, looking for the terminal type.
* We don't use strtok because it does not show us empty tokens.
*/
#define ThisDbList _nc_globals.dbi_list
#define ThisDbSize _nc_globals.dbi_size
/*
* Cleanup.
*/
NCURSES_EXPORT(void)
_nc_last_db(void)
{
if (ThisDbList != 0) {
FreeAndNull(ThisDbList);
}
ThisDbSize = 0;
}
/* The TERMINFO_DIRS value, if defined by the configure script, begins with a
* ":", which will be interpreted as TERMINFO.
*/
static const char *
next_list_item(const char *source, int *offset)
{
if (source != 0) {
FreeIfNeeded(ThisDbList);
ThisDbList = strdup(source);
ThisDbSize = (int) strlen(source);
}
if (ThisDbList != 0 && ThisDbSize && *offset < ThisDbSize) {
static char system_db[] = TERMINFO;
char *result = ThisDbList + *offset;
char *marker = strchr(result, NCURSES_PATHSEP);
/*
* Put a null on the marker if a separator was found. Set the offset
* to the next position after the marker so we can call this function
* again, using the data at the offset.
*/
if (marker == 0) {
*offset += (int) strlen(result);
} else {
*marker++ = 0;
*offset = (int) (marker - ThisDbList);
}
if (*result == 0 && result != (ThisDbList + ThisDbSize))
result = system_db;
return result;
}
return 0;
}
#define NEXT_DBD(var, offset) next_list_item((*offset == 0) ? var : 0, offset)
/*
* This is a simple iterator which allows the caller to step through the
* possible locations for a terminfo directory. ncurses uses this to find
* terminfo files to read.
*/
NCURSES_EXPORT(const char *)
_nc_next_db(DBDIRS * state, int *offset)
{
const char *result;
char *envp;
while (*state < dbdLAST) {
DBDIRS next = (DBDIRS) ((int) (*state) + 1);
result = 0;
switch (*state) {
case dbdTIC:
if (HaveTicDirectory)
result = _nc_tic_dir(0);
break;
#if USE_DATABASE
case dbdEnvOnce:
if (use_terminfo_vars()) {
if ((envp = getenv("TERMINFO")) != 0)
result = _nc_tic_dir(envp);
}
break;
case dbdHome:
if (use_terminfo_vars()) {
result = _nc_home_terminfo();
}
break;
case dbdEnvList:
if (use_terminfo_vars()) {
if ((result = NEXT_DBD(getenv("TERMINFO_DIRS"), offset)) != 0)
next = *state;
}
break;
case dbdCfgList:
#ifdef TERMINFO_DIRS
if ((result = NEXT_DBD(TERMINFO_DIRS, offset)) != 0)
next = *state;
#endif
break;
case dbdCfgOnce:
#ifndef TERMINFO_DIRS
result = TERMINFO;
#endif
break;
#endif /* USE_DATABASE */
#if USE_TERMCAP
case dbdEnvOnce2:
if (use_terminfo_vars()) {
if ((envp = getenv("TERMCAP")) != 0)
result = _nc_tic_dir(envp);
}
break;
case dbdEnvList2:
if (use_terminfo_vars()) {
if ((result = NEXT_DBD(getenv("TERMPATH"), offset)) != 0)
next = *state;
}
break;
case dbdCfgList2:
if ((result = NEXT_DBD(TERMPATH, offset)) != 0)
next = *state;
break;
#endif /* USE_TERMCAP */
case dbdLAST:
break;
}
if (*state != next) {
*state = next;
*offset = 0;
_nc_last_db();
}
if (result != 0) {
return result;
}
}
return 0;
}
NCURSES_EXPORT(void)
_nc_first_db(DBDIRS * state, int *offset)
{
*state = dbdTIC;
*offset = 0;
}
|
