063a566f2abc27ec80c8cdb4dbc4945f9c7855cb
[ncurses.git] / ncurses / tinfo / lib_data.c
1 /****************************************************************************
2  * Copyright (c) 1998-2005,2007 Free Software Foundation, Inc.              *
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10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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27  ****************************************************************************/
28
29 /****************************************************************************
30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32  *     and: Thomas E. Dickey                        1996-on                 *
33  ****************************************************************************/
34
35 /*
36 **      lib_data.c
37 **
38 **      Common data that may/may not be allocated, but is referenced globally
39 **
40 */
41
42 #include <curses.priv.h>
43
44 MODULE_ID("$Id: lib_data.c,v 1.30 2007/09/08 21:59:56 tom Exp $")
45
46 /*
47  * OS/2's native linker complains if we don't initialize public data when
48  * constructing a dll (reported by J.J.G.Ripoll).
49  */
50 #if USE_REENTRANT
51 NCURSES_EXPORT(WINDOW *)
52 NCURSES_PUBLIC_VAR(stdscr) (void)
53 {
54     return SP ? SP->_stdscr : 0;
55 }
56 NCURSES_EXPORT(WINDOW *)
57 NCURSES_PUBLIC_VAR(curscr) (void)
58 {
59     return SP ? SP->_curscr : 0;
60 }
61 NCURSES_EXPORT(WINDOW *)
62 NCURSES_PUBLIC_VAR(newscr) (void)
63 {
64     return SP ? SP->_newscr : 0;
65 }
66 #else
67 NCURSES_EXPORT_VAR(WINDOW *) stdscr = 0;
68 NCURSES_EXPORT_VAR(WINDOW *) curscr = 0;
69 NCURSES_EXPORT_VAR(WINDOW *) newscr = 0;
70 #endif
71
72 NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain = 0;
73
74 /*
75  * The variable 'SP' will be defined as a function on systems that cannot link
76  * data-only modules, since it is used in a lot of places within ncurses and we
77  * cannot guarantee that any application will use any particular function.  We
78  * put the WINDOW variables in this module, because it appears that any
79  * application that uses them will also use 'SP'.
80  *
81  * This module intentionally does not reference other ncurses modules, to avoid
82  * module coupling that increases the size of the executable.
83  */
84 #if BROKEN_LINKER
85 static SCREEN *my_screen;
86
87 NCURSES_EXPORT(SCREEN *)
88 _nc_screen(void)
89 {
90     return my_screen;
91 }
92
93 NCURSES_EXPORT(int)
94 _nc_alloc_screen(void)
95 {
96     return ((my_screen = typeCalloc(SCREEN, 1)) != 0);
97 }
98
99 NCURSES_EXPORT(void)
100 _nc_set_screen(SCREEN *sp)
101 {
102     my_screen = sp;
103 }
104
105 #else
106 NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data... */
107 #endif
108 /* *INDENT-OFF* */
109 #define CHARS_0s { '\0' }
110
111 #define TGETENT_0 { 0L, FALSE, NULL, NULL, NULL }
112 #define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 } 
113
114 NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
115     0,                          /* have_sigwinch */
116     0,                          /* cleanup_nested */
117
118     FALSE,                      /* init_signals */
119     FALSE,                      /* init_screen */
120
121     NULL,                       /* comp_sourcename */
122     NULL,                       /* comp_termtype */
123
124     FALSE,                      /* have_tic_directory */
125     FALSE,                      /* keep_tic_directory */
126     TERMINFO,                   /* tic_directory */
127
128     NULL,                       /* dbi_list */
129     0,                          /* dbi_size */
130
131     NULL,                       /* first_name */
132     NULL,                       /* keyname_table */
133
134     NULL,                       /* safeprint_buf */
135     0,                          /* safeprint_used */
136
137     TGETENT_0s,                 /* tgetent_cache */
138     0,                          /* tgetent_index */
139     0,                          /* tgetent_sequence */
140
141 #if USE_HOME_TERMINFO
142     NULL,                       /* home_terminfo */
143 #endif
144
145 #if !USE_SAFE_SPRINTF
146     0,                          /* safeprint_cols */
147     0,                          /* safeprint_rows */
148 #endif
149
150 #ifdef TRACE
151     FALSE,                      /* init_trace */
152     CHARS_0s,                   /* trace_fname */
153     0,                          /* trace_level */
154     NULL,                       /* trace_fp */
155
156     NULL,                       /* tracearg_buf */
157     0,                          /* tracearg_used */
158
159     NULL,                       /* tracebuf_ptr */
160     0,                          /* tracebuf_used */
161
162     CHARS_0s,                   /* tracechr_buf */
163
164     NULL,                       /* tracedmp_buf */
165     0,                          /* tracedmp_used */
166
167     CHARS_0s,                   /* tracemse_buf */
168
169     NULL,                       /* tracetry_buf */
170     0,                          /* tracetry_used */
171
172 #ifndef USE_TERMLIB
173     { CHARS_0s, CHARS_0s },     /* traceatr_color_buf */
174     0,                          /* traceatr_color_sel */
175     -1,                         /* traceatr_color_last */
176 #endif /* USE_TERMLIB */
177
178 #endif /* TRACE */
179 #ifdef USE_PTHREADS
180     PTHREAD_MUTEX_INITIALIZER,  /* mutex_set_SP */
181     PTHREAD_MUTEX_INITIALIZER,  /* mutex_use_screen */
182     PTHREAD_MUTEX_INITIALIZER,  /* mutex_windowlist */
183 #endif
184 };
185
186 #define STACK_FRAME_0   { { 0 }, 0 }
187 #define STACK_FRAME_0s  { STACK_FRAME_0 }
188 #define NUM_VARS_0s     { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
189
190 #define RIPOFF_0        { 0,0 }
191 #define RIPOFF_0s       { RIPOFF_0 }
192
193 NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
194     TRUE,                       /* use_env */
195     FALSE,                      /* filter_mode */
196     A_NORMAL,                   /* previous_attr */
197     RIPOFF_0s,                  /* ripoff */
198     NULL,                       /* rsp */
199     {                           /* tparm_state */
200 #ifdef TRACE
201         NULL,                   /* tname */
202 #endif
203         NULL,                   /* tparam_base */
204
205         STACK_FRAME_0s,         /* stack */
206         0,                      /* stack_ptr */
207
208         NULL,                   /* out_buff */
209         0,                      /* out_size */
210         0,                      /* out_used */
211
212         NULL,                   /* fmt_buff */
213         0,                      /* fmt_size */
214
215         NUM_VARS_0s,            /* dynamic_var */
216         NUM_VARS_0s,            /* static_vars */
217     },
218     NULL,                       /* saved_tty */
219 #if BROKEN_LINKER || USE_REENTRANT
220     NULL,                       /* real_acs_map */
221     0,                          /* LINES */
222     0,                          /* COLS */
223 #endif
224 };
225 /* *INDENT-ON* */