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27 ****************************************************************************/
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 1.80 2019/12/07 16:05:22 tom Exp $
37 * tic.h - Global variables and structures for the terminfo compiler.
47 #include <ncurses_cfg.h>
49 #include <curses.h> /* for the _tracef() prototype, ERR/OK, bool defs */
52 ** The format of SVr2 compiled terminfo files is as follows:
54 ** Header (12 bytes), containing information given below
55 ** Names Section, containing the names of the terminal
56 ** Boolean Section, containing the values of all of the
57 ** boolean capabilities
58 ** A null byte may be inserted here to make
59 ** sure that the Number Section begins on an
60 ** even word boundary.
61 ** Number Section, containing the values of all of the numeric
62 ** capabilities, each as a short integer
63 ** String Section, containing short integer offsets into the
64 ** String Table, one per string capability
65 ** String Table, containing the actual characters of the string
68 ** In the SVr2 format, "short" means signed 16-bit numbers, which is sometimes
69 ** inconvenient. The numbers are signed, to provide for absent and canceled
70 ** values. ncurses6.1 introduced an extension to this compiled format, by
71 ** making the Number Section a list of signed 32-bit integers.
73 ** NOTE that all short integers in the file are stored using VAX/PDP-style
74 ** byte-order, i.e., least-significant byte first.
76 ** There is no structure definition here because it would only confuse
77 ** matters. Terminfo format is a raw byte layout, not a structure
78 ** dump. If you happen to be on a little-endian machine with 16-bit
79 ** shorts that requires no padding between short members in a struct,
80 ** then there is a natural C structure that captures the header, but
81 ** not very helpfully.
84 #define MAGIC 0432 /* first two bytes of a compiled entry */
85 #define MAGIC2 01036 /* first two bytes of a compiled 32-bit entry */
88 #define BYTE(p,n) (unsigned char)((p)[n])
90 #define IS_NEG1(p) ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
91 #define IS_NEG2(p) ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
92 #define LOW_MSB(p) (BYTE(p,0) + 256*BYTE(p,1))
94 #define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC || LOW_MSB(p) == MAGIC2)
96 #define quick_prefix(s) (!strncmp((s), "b64:", (size_t)4) || !strncmp((s), "hex:", (size_t)4))
99 * The "maximum" here is misleading; XSI guarantees minimum values, which a
100 * given implementation may exceed.
102 #define MAX_NAME_SIZE 512 /* maximum legal name field size (XSI:127) */
103 #define MAX_ENTRY_SIZE1 4096 /* maximum legal entry size (SVr2) */
104 #define MAX_ENTRY_SIZE2 32768 /* maximum legal entry size (ncurses6.1) */
106 #if NCURSES_EXT_COLORS && HAVE_INIT_EXTENDED_COLOR
107 #define MAX_ENTRY_SIZE MAX_ENTRY_SIZE2
109 #define MAX_ENTRY_SIZE MAX_ENTRY_SIZE1
113 * The maximum size of individual name or alias is guaranteed in XSI to be at
114 * least 14, since that corresponds to the older filename lengths. Newer
115 * systems allow longer aliases, though not many terminal descriptions are
116 * written to use them. The MAX_ALIAS symbol is used for warnings.
118 #if HAVE_LONG_FILE_NAMES
119 #define MAX_ALIAS 32 /* smaller than POSIX minimum for PATH_MAX */
121 #define MAX_ALIAS 14 /* SVr3 filename length */
124 /* location of user's personal info directory */
125 #define PRIVATE_INFO "%s/.terminfo" /* plug getenv("HOME") into %s */
128 * Some traces are designed to be used via tic's verbose option (and similar in
129 * infocmp and toe) rather than the 'trace()' function. So we use the bits
130 * above the normal trace() parameter as a debug-level.
133 #define MAX_DEBUG_LEVEL 15
134 #define DEBUG_LEVEL(n) ((n) << TRACE_SHIFT)
136 #define set_trace_level(n) \
137 _nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL) \
138 + DEBUG_LEVEL(MAX_DEBUG_LEVEL) - 1, \
139 _nc_tracing |= DEBUG_LEVEL(n)
142 #define DEBUG(n, a) if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
144 #define DEBUG(n, a) /*nothing*/
148 * These are the types of tokens returned by the scanner. The first
149 * three are also used in the hash table of capability names. The scanner
150 * returns one of these values after loading the specifics into the global
151 * structure curr_token.
154 #define BOOLEAN 0 /* Boolean capability */
155 #define NUMBER 1 /* Numeric capability */
156 #define STRING 2 /* String-valued capability */
157 #define CANCEL 3 /* Capability to be cancelled in following tc's */
158 #define NAMES 4 /* The names for a terminal type */
159 #define UNDEF 5 /* Undefined */
161 #define NO_PUSHBACK -1 /* used in pushtype to indicate no pushback */
164 * The global structure in which the specific parts of a
165 * scanned token are returned.
170 char *tk_name; /* name of capability */
171 int tk_valnumber; /* value of capability (if a number) */
172 char *tk_valstring; /* value of capability (if a string) */
176 * Offsets to string capabilities, with the corresponding functionkey codes.
183 typedef short HashValue;
186 * The file comp_captab.c contains an array of these structures, one per
187 * possible capability. These are indexed by a hash table array of pointers to
188 * the same structures for use by the parser.
190 struct name_table_entry
192 const char *nte_name; /* name to hash on */
193 int nte_type; /* BOOLEAN, NUMBER or STRING */
194 HashValue nte_index; /* index of associated variable in its array */
195 HashValue nte_link; /* index in table of next hash, or -1 */
199 * Use this structure to hide differences between terminfo and termcap tables.
203 const HashValue *table_data;
204 HashValue (*hash_of)(const char *);
205 int (*compare_names)(const char *, const char *);
215 #define NOTFOUND ((struct name_table_entry *) 0)
218 * The file comp_userdefs.c contains an array of these structures, one per
219 * possible capability. These are indexed by a hash table array of pointers to
220 * the same structures for use by the parser.
222 struct user_table_entry
224 const char *ute_name; /* name to hash on */
225 int ute_type; /* mask (BOOLEAN, NUMBER, STRING) */
226 unsigned ute_argc; /* number of parameters */
227 unsigned ute_args; /* bit-mask for string parameters */
228 HashValue ute_index; /* index of associated variable in its array */
229 HashValue ute_link; /* index in table of next hash, or -1 */
233 * The casts are required for correct sign-propagation with systems such as
234 * AIX, IRIX64, Solaris which default to unsigned characters. The C standard
235 * leaves this detail unspecified.
238 /* out-of-band values for representing absent capabilities */
239 #define ABSENT_BOOLEAN ((signed char)-1) /* 255 */
240 #define ABSENT_NUMERIC (-1)
241 #define ABSENT_STRING (char *)0
243 /* out-of-band values for representing cancels */
244 #define CANCELLED_BOOLEAN ((signed char)-2) /* 254 */
245 #define CANCELLED_NUMERIC (-2)
246 #define CANCELLED_STRING (char *)(-1)
248 #define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
249 #define VALID_NUMERIC(s) ((s) >= 0)
250 #define VALID_STRING(s) ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
252 /* termcap entries longer than this may break old binaries */
253 #define MAX_TERMCAP_LENGTH 1023
255 /* this is a documented limitation of terminfo */
256 #define MAX_TERMINFO_LENGTH 4096
259 #define TERMINFO "/usr/share/terminfo"
262 #ifdef NCURSES_TERM_ENTRY_H_incl
265 * These entrypoints are used only by the ncurses utilities such as tic.
267 #ifdef NCURSES_INTERNALS
269 extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
270 extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
271 extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
272 extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
273 extern NCURSES_EXPORT(char *) _nc_basename (char *);
274 extern NCURSES_EXPORT(char *) _nc_rootname (char *);
277 extern NCURSES_EXPORT(const struct name_table_entry *) _nc_get_table (bool);
278 extern NCURSES_EXPORT(const HashData *) _nc_get_hash_info (bool);
279 extern NCURSES_EXPORT(const struct alias *) _nc_get_alias_table (bool);
281 /* comp_hash.c: name lookup */
282 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
283 (const char *, int, bool);
284 extern NCURSES_EXPORT(struct user_table_entry const *) _nc_find_user_entry
287 /* comp_scan.c: lexical analysis */
288 extern NCURSES_EXPORT(int) _nc_get_token (bool);
289 extern NCURSES_EXPORT(void) _nc_panic_mode (char);
290 extern NCURSES_EXPORT(void) _nc_push_token (int);
291 extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
292 extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
293 extern NCURSES_EXPORT_VAR(int) _nc_syntax;
294 extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
295 extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
296 extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
297 extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
298 extern NCURSES_EXPORT_VAR(long) _nc_start_line;
299 #define SYN_TERMINFO 0
300 #define SYN_TERMCAP 1
302 /* comp_error.c: warning & abort messages */
303 extern NCURSES_EXPORT(const char *) _nc_get_source (void);
304 extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
305 extern NCURSES_EXPORT(void) _nc_get_type (char *name);
306 extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
307 extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
308 extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
309 extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
310 extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
313 extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
315 /* comp_userdefs.c */
316 NCURSES_EXPORT(const struct user_table_entry *) _nc_get_userdefs_table (void);
317 NCURSES_EXPORT(const HashData *) _nc_get_hash_user (void);
319 /* captoinfo.c: capability conversion */
320 extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
321 extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
323 /* home_terminfo.c */
324 extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
328 #define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
329 extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
331 extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
337 extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
339 extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
342 extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
343 extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
344 extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
347 extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent; /* Add one for every null sent */
349 /* comp_main.c: compiler main */
350 extern const char * _nc_progname;
353 extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
354 extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
355 extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
356 extern NCURSES_EXPORT(void) _nc_last_db(void);
359 extern NCURSES_EXPORT(int) _nc_tic_written (void);
361 #endif /* NCURSES_INTERNALS */
364 * These entrypoints were used by tack before 1.08.
367 #undef NCURSES_TACK_1_08
368 #ifdef NCURSES_INTERNALS
369 #define NCURSES_TACK_1_08 /* nothing */
371 #define NCURSES_TACK_1_08 GCC_DEPRECATED("upgrade to tack 1.08")
374 /* comp_hash.c: name lookup */
375 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
376 (const char *, const HashValue *) NCURSES_TACK_1_08;
377 extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool) NCURSES_TACK_1_08;
379 /* comp_scan.c: lexical analysis */
380 extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *) NCURSES_TACK_1_08;
382 /* comp_expand.c: expand string into readable form */
383 extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int) NCURSES_TACK_1_08;
385 /* comp_scan.c: decode string from readable form */
386 extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *) NCURSES_TACK_1_08;
388 #endif /* NCURSES_TERM_ENTRY_H_incl */