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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 1.73 2017/03/18 17:14:19 tom Exp $
37 * tic.h - Global variables and structures for the terminfo compiler.
47 #include <curses.h> /* for the _tracef() prototype, ERR/OK, bool defs */
50 ** The format of compiled terminfo files is as follows:
52 ** Header (12 bytes), containing information given below
53 ** Names Section, containing the names of the terminal
54 ** Boolean Section, containing the values of all of the
55 ** boolean capabilities
56 ** A null byte may be inserted here to make
57 ** sure that the Number Section begins on an
58 ** even word boundary.
59 ** Number Section, containing the values of all of the numeric
60 ** capabilities, each as a short integer
61 ** String Section, containing short integer offsets into the
62 ** String Table, one per string capability
63 ** String Table, containing the actual characters of the string
66 ** NOTE that all short integers in the file are stored using VAX/PDP-style
67 ** byte-order, i.e., least-significant byte first.
69 ** There is no structure definition here because it would only confuse
70 ** matters. Terminfo format is a raw byte layout, not a structure
71 ** dump. If you happen to be on a little-endian machine with 16-bit
72 ** shorts that requires no padding between short members in a struct,
73 ** then there is a natural C structure that captures the header, but
74 ** not very helpfully.
77 #define MAGIC 0432 /* first two bytes of a compiled entry */
80 #define BYTE(p,n) (unsigned char)((p)[n])
82 #define IS_NEG1(p) ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
83 #define IS_NEG2(p) ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
84 #define LOW_MSB(p) (BYTE(p,0) + 256*BYTE(p,1))
86 #define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC)
88 #define quick_prefix(s) (!strncmp((s), "b64:", 4) || !strncmp((s), "hex:", 4))
91 * The "maximum" here is misleading; XSI guarantees minimum values, which a
92 * given implementation may exceed.
94 #define MAX_NAME_SIZE 512 /* maximum legal name field size (XSI:127) */
95 #define MAX_ENTRY_SIZE 4096 /* maximum legal entry size */
98 * The maximum size of individual name or alias is guaranteed in XSI to be at
99 * least 14, since that corresponds to the older filename lengths. Newer
100 * systems allow longer aliases, though not many terminal descriptions are
101 * written to use them. The MAX_ALIAS symbol is used for warnings.
103 #if HAVE_LONG_FILE_NAMES
104 #define MAX_ALIAS 32 /* smaller than POSIX minimum for PATH_MAX */
106 #define MAX_ALIAS 14 /* SVr3 filename length */
109 /* location of user's personal info directory */
110 #define PRIVATE_INFO "%s/.terminfo" /* plug getenv("HOME") into %s */
113 * Some traces are designed to be used via tic's verbose option (and similar in
114 * infocmp and toe) rather than the 'trace()' function. So we use the bits
115 * above the normal trace() parameter as a debug-level.
118 #define MAX_DEBUG_LEVEL 15
119 #define DEBUG_LEVEL(n) ((n) << TRACE_SHIFT)
121 #define set_trace_level(n) \
122 _nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL), \
123 _nc_tracing |= DEBUG_LEVEL(n)
126 #define DEBUG(n, a) if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
128 #define DEBUG(n, a) /*nothing*/
132 * These are the types of tokens returned by the scanner. The first
133 * three are also used in the hash table of capability names. The scanner
134 * returns one of these values after loading the specifics into the global
135 * structure curr_token.
138 #define BOOLEAN 0 /* Boolean capability */
139 #define NUMBER 1 /* Numeric capability */
140 #define STRING 2 /* String-valued capability */
141 #define CANCEL 3 /* Capability to be cancelled in following tc's */
142 #define NAMES 4 /* The names for a terminal type */
143 #define UNDEF 5 /* Undefined */
145 #define NO_PUSHBACK -1 /* used in pushtype to indicate no pushback */
148 * The global structure in which the specific parts of a
149 * scanned token are returned.
154 char *tk_name; /* name of capability */
155 int tk_valnumber; /* value of capability (if a number) */
156 char *tk_valstring; /* value of capability (if a string) */
160 * Offsets to string capabilities, with the corresponding functionkey codes.
167 typedef short HashValue;
170 * The file comp_captab.c contains an array of these structures, one per
171 * possible capability. These are indexed by a hash table array of pointers to
172 * the same structures for use by the parser.
174 struct name_table_entry
176 const char *nte_name; /* name to hash on */
177 int nte_type; /* BOOLEAN, NUMBER or STRING */
178 HashValue nte_index; /* index of associated variable in its array */
179 HashValue nte_link; /* index in table of next hash, or -1 */
183 * Use this structure to hide differences between terminfo and termcap tables.
187 const HashValue *table_data;
188 HashValue (*hash_of)(const char *);
189 int (*compare_names)(const char *, const char *);
199 #define NOTFOUND ((struct name_table_entry *) 0)
202 * The casts are required for correct sign-propagation with systems such as
203 * AIX, IRIX64, Solaris which default to unsigned characters. The C standard
204 * leaves this detail unspecified.
207 /* out-of-band values for representing absent capabilities */
208 #define ABSENT_BOOLEAN ((signed char)-1) /* 255 */
209 #define ABSENT_NUMERIC (-1)
210 #define ABSENT_STRING (char *)0
212 /* out-of-band values for representing cancels */
213 #define CANCELLED_BOOLEAN ((signed char)-2) /* 254 */
214 #define CANCELLED_NUMERIC (-2)
215 #define CANCELLED_STRING (char *)(-1)
217 #define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
218 #define VALID_NUMERIC(s) ((s) >= 0)
219 #define VALID_STRING(s) ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
221 /* termcap entries longer than this may break old binaries */
222 #define MAX_TERMCAP_LENGTH 1023
224 /* this is a documented limitation of terminfo */
225 #define MAX_TERMINFO_LENGTH 4096
228 #define TERMINFO "/usr/share/terminfo"
231 #ifdef NCURSES_TERM_ENTRY_H_incl
234 * These entrypoints are used only by the ncurses utilities such as tic.
236 #ifdef NCURSES_INTERNALS
238 extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
239 extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
240 extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
241 extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
242 extern NCURSES_EXPORT(char *) _nc_basename (char *);
243 extern NCURSES_EXPORT(char *) _nc_rootname (char *);
246 extern NCURSES_EXPORT(const struct name_table_entry *) _nc_get_table (bool);
247 extern NCURSES_EXPORT(const HashData *) _nc_get_hash_info (bool);
248 extern NCURSES_EXPORT(const struct alias *) _nc_get_alias_table (bool);
250 /* comp_hash.c: name lookup */
251 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
252 (const char *, int, bool);
254 /* comp_scan.c: lexical analysis */
255 extern NCURSES_EXPORT(int) _nc_get_token (bool);
256 extern NCURSES_EXPORT(void) _nc_panic_mode (char);
257 extern NCURSES_EXPORT(void) _nc_push_token (int);
258 extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
259 extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
260 extern NCURSES_EXPORT_VAR(int) _nc_syntax;
261 extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
262 extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
263 extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
264 extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
265 extern NCURSES_EXPORT_VAR(long) _nc_start_line;
266 #define SYN_TERMINFO 0
267 #define SYN_TERMCAP 1
269 /* comp_error.c: warning & abort messages */
270 extern NCURSES_EXPORT(const char *) _nc_get_source (void);
271 extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
272 extern NCURSES_EXPORT(void) _nc_get_type (char *name);
273 extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
274 extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
275 extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
276 extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
277 extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
280 extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
282 /* captoinfo.c: capability conversion */
283 extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
284 extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
286 /* home_terminfo.c */
287 extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
291 #define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
292 extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
294 extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
300 extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
302 extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
305 extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
306 extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
307 extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
310 extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent; /* Add one for every null sent */
312 /* comp_main.c: compiler main */
313 extern const char * _nc_progname;
316 extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
317 extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
318 extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
319 extern NCURSES_EXPORT(void) _nc_last_db(void);
322 extern NCURSES_EXPORT(int) _nc_tic_written (void);
324 #endif /* NCURSES_INTERNALS */
327 * These entrypoints are used by tack.
330 /* comp_hash.c: name lookup */
331 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
332 (const char *, const HashValue *);
333 extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool);
335 /* comp_scan.c: lexical analysis */
336 extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);
338 /* comp_expand.c: expand string into readable form */
339 extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int);
341 /* comp_scan.c: decode string from readable form */
342 extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *);
344 #endif /* NCURSES_TERM_ENTRY_H_incl */