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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 ****************************************************************************/
36 * $Id: tic.h,v 1.68 2012/02/18 20:09:19 tom Exp $
37 * tic.h - Global variables and structures for the terminfo
48 #include <curses.h> /* for the _tracef() prototype, ERR/OK, bool defs */
51 ** The format of compiled terminfo files is as follows:
53 ** Header (12 bytes), containing information given below
54 ** Names Section, containing the names of the terminal
55 ** Boolean Section, containing the values of all of the
56 ** boolean capabilities
57 ** A null byte may be inserted here to make
58 ** sure that the Number Section begins on an
59 ** even word boundary.
60 ** Number Section, containing the values of all of the numeric
61 ** capabilities, each as a short integer
62 ** String Section, containing short integer offsets into the
63 ** String Table, one per string capability
64 ** String Table, containing the actual characters of the string
67 ** NOTE that all short integers in the file are stored using VAX/PDP-style
68 ** byte-order, i.e., least-significant byte first.
70 ** There is no structure definition here because it would only confuse
71 ** matters. Terminfo format is a raw byte layout, not a structure
72 ** dump. If you happen to be on a little-endian machine with 16-bit
73 ** shorts that requires no padding between short members in a struct,
74 ** then there is a natural C structure that captures the header, but
75 ** not very helpfully.
78 #define MAGIC 0432 /* first two bytes of a compiled entry */
81 #define BYTE(p,n) (unsigned char)((p)[n])
83 #define IS_NEG1(p) ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
84 #define IS_NEG2(p) ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
85 #define LOW_MSB(p) (BYTE(p,0) + 256*BYTE(p,1))
87 #define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC)
90 * The "maximum" here is misleading; XSI guarantees minimum values, which a
91 * given implementation may exceed.
93 #define MAX_NAME_SIZE 512 /* maximum legal name field size (XSI:127) */
94 #define MAX_ENTRY_SIZE 4096 /* maximum legal entry size */
97 * The maximum size of individual name or alias is guaranteed in XSI to be at
98 * least 14, since that corresponds to the older filename lengths. Newer
99 * systems allow longer aliases, though not many terminal descriptions are
100 * written to use them. The MAX_ALIAS symbol is used for warnings.
102 #if HAVE_LONG_FILE_NAMES
103 #define MAX_ALIAS 32 /* smaller than POSIX minimum for PATH_MAX */
105 #define MAX_ALIAS 14 /* SVr3 filename length */
108 /* location of user's personal info directory */
109 #define PRIVATE_INFO "%s/.terminfo" /* plug getenv("HOME") into %s */
112 * Some traces are designed to be used via tic's verbose option (and similar in
113 * infocmp and toe) rather than the 'trace()' function. So we use the bits
114 * above the normal trace() parameter as a debug-level.
117 #define MAX_DEBUG_LEVEL 15
118 #define DEBUG_LEVEL(n) ((n) << TRACE_SHIFT)
120 #define set_trace_level(n) \
121 _nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL), \
122 _nc_tracing |= DEBUG_LEVEL(n)
125 #define DEBUG(n, a) if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
127 #define DEBUG(n, a) /*nothing*/
130 extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
131 extern NCURSES_EXPORT(void) _nc_tracef (char *, ...) GCC_PRINTFLIKE(1,2);
132 extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
133 extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
136 * These are the types of tokens returned by the scanner. The first
137 * three are also used in the hash table of capability names. The scanner
138 * returns one of these values after loading the specifics into the global
139 * structure curr_token.
142 #define BOOLEAN 0 /* Boolean capability */
143 #define NUMBER 1 /* Numeric capability */
144 #define STRING 2 /* String-valued capability */
145 #define CANCEL 3 /* Capability to be cancelled in following tc's */
146 #define NAMES 4 /* The names for a terminal type */
147 #define UNDEF 5 /* Undefined */
149 #define NO_PUSHBACK -1 /* used in pushtype to indicate no pushback */
152 * The global structure in which the specific parts of a
153 * scanned token are returned.
159 char *tk_name; /* name of capability */
160 int tk_valnumber; /* value of capability (if a number) */
161 char *tk_valstring; /* value of capability (if a string) */
164 extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
167 * Offsets to string capabilities, with the corresponding functionkey
177 #define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
178 extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
182 extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
186 typedef short HashValue;
189 * The file comp_captab.c contains an array of these structures, one
190 * per possible capability. These are indexed by a hash table array of
191 * pointers to the same structures for use by the parser.
194 struct name_table_entry
196 const char *nte_name; /* name to hash on */
197 int nte_type; /* BOOLEAN, NUMBER or STRING */
198 HashValue nte_index; /* index of associated variable in its array */
199 HashValue nte_link; /* index in table of next hash, or -1 */
203 * Use this structure to hide differences between terminfo and termcap
208 const HashValue *table_data;
209 HashValue (*hash_of)(const char *);
210 int (*compare_names)(const char *, const char *);
220 extern NCURSES_EXPORT(const struct name_table_entry *) _nc_get_table (bool);
221 extern NCURSES_EXPORT(const HashData *) _nc_get_hash_info (bool);
222 extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool);
223 extern NCURSES_EXPORT(const struct alias *) _nc_get_alias_table (bool);
225 #define NOTFOUND ((struct name_table_entry *) 0)
227 /* out-of-band values for representing absent capabilities */
228 #define ABSENT_BOOLEAN ((signed char)-1) /* 255 */
229 #define ABSENT_NUMERIC (-1)
230 #define ABSENT_STRING (char *)0
232 /* out-of-band values for representing cancels */
233 #define CANCELLED_BOOLEAN ((signed char)-2) /* 254 */
234 #define CANCELLED_NUMERIC (-2)
235 #define CANCELLED_STRING (char *)(-1)
237 #define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
238 #define VALID_NUMERIC(s) ((s) >= 0)
239 #define VALID_STRING(s) ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
241 /* termcap entries longer than this may break old binaries */
242 #define MAX_TERMCAP_LENGTH 1023
244 /* this is a documented limitation of terminfo */
245 #define MAX_TERMINFO_LENGTH 4096
248 #define TERMINFO "/usr/share/terminfo"
251 #ifdef NCURSES_TERM_ENTRY_H_incl
254 extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
255 extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
256 extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
257 extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
258 extern NCURSES_EXPORT(char *) _nc_basename (char *);
259 extern NCURSES_EXPORT(char *) _nc_rootname (char *);
261 /* comp_hash.c: name lookup */
262 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
263 (const char *, const HashValue *);
264 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
265 (const char *, int, bool);
267 /* comp_scan.c: lexical analysis */
268 extern NCURSES_EXPORT(int) _nc_get_token (bool);
269 extern NCURSES_EXPORT(void) _nc_panic_mode (char);
270 extern NCURSES_EXPORT(void) _nc_push_token (int);
271 extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);
272 extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
273 extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
274 extern NCURSES_EXPORT_VAR(int) _nc_syntax;
275 extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
276 extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
277 extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
278 extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
279 extern NCURSES_EXPORT_VAR(long) _nc_start_line;
280 #define SYN_TERMINFO 0
281 #define SYN_TERMCAP 1
283 /* comp_error.c: warning & abort messages */
284 extern NCURSES_EXPORT(const char *) _nc_get_source (void);
285 extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
286 extern NCURSES_EXPORT(void) _nc_get_type (char *name);
287 extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
288 extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
289 extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
290 extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
291 extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
293 /* comp_expand.c: expand string into readable form */
294 extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int);
296 /* comp_scan.c: decode string from readable form */
297 extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *);
299 /* captoinfo.c: capability conversion */
300 extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
301 extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
303 /* home_terminfo.c */
304 extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
309 extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
311 extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
314 extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent; /* Add one for every null sent */
316 /* comp_main.c: compiler main */
317 extern const char * _nc_progname;
320 extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
321 extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
322 extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
323 extern NCURSES_EXPORT(void) _nc_last_db(void);
326 extern NCURSES_EXPORT(int) _nc_tic_written (void);
328 #endif /* NCURSES_TERM_ENTRY_H_incl */