contrib/ncurses/include/tic.h

   1 /****************************************************************************
   2  * Copyright (c) 1998-2012,2017 Free Software Foundation, Inc.              *
   3  *                                                                          *
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   5  * copy of this software and associated documentation files (the            *
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   9  * copies of the Software, and to permit persons to whom the Software is    *
  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  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  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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  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
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  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  * $Id: tic.h,v 1.74 2017/07/22 16:25:10 tom Exp $
  37  *      tic.h - Global variables and structures for the terminfo compiler.
  38  */
  39
  40 #ifndef __TIC_H
  41 #define __TIC_H
  42 /* *INDENT-OFF* */
  43 #ifdef __cplusplus
  44 extern "C" {
  45 #endif
  46
  47 #include <ncurses_cfg.h>
  48
  49 #include <curses.h>     /* for the _tracef() prototype, ERR/OK, bool defs */
  50
  51 /*
  52 ** The format of compiled terminfo files is as follows:
  53 **
  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
  66 **                              capabilities.
  67 **
  68 **      NOTE that all short integers in the file are stored using VAX/PDP-style
  69 **      byte-order, i.e., least-significant byte first.
  70 **
  71 **      There is no structure definition here because it would only confuse
  72 **      matters.  Terminfo format is a raw byte layout, not a structure
  73 **      dump.  If you happen to be on a little-endian machine with 16-bit
  74 **      shorts that requires no padding between short members in a struct,
  75 **      then there is a natural C structure that captures the header, but
  76 **      not very helpfully.
  77 */
  78
  79 #define MAGIC           0432    /* first two bytes of a compiled entry */
  80
  81 #undef  BYTE
  82 #define BYTE(p,n)       (unsigned char)((p)[n])
  83
  84 #define IS_NEG1(p)      ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
  85 #define IS_NEG2(p)      ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
  86 #define LOW_MSB(p)      (BYTE(p,0) + 256*BYTE(p,1))
  87
  88 #define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC)
  89
  90 #define quick_prefix(s) (!strncmp((s), "b64:", 4) || !strncmp((s), "hex:", 4))
  91
  92 /*
  93  * The "maximum" here is misleading; XSI guarantees minimum values, which a
  94  * given implementation may exceed.
  95  */
  96 #define MAX_NAME_SIZE   512     /* maximum legal name field size (XSI:127) */
  97 #define MAX_ENTRY_SIZE  4096    /* maximum legal entry size */
  98
  99 /*
 100  * The maximum size of individual name or alias is guaranteed in XSI to be at
 101  * least 14, since that corresponds to the older filename lengths.  Newer
 102  * systems allow longer aliases, though not many terminal descriptions are
 103  * written to use them.  The MAX_ALIAS symbol is used for warnings.
 104  */
 105 #if HAVE_LONG_FILE_NAMES
 106 #define MAX_ALIAS       32      /* smaller than POSIX minimum for PATH_MAX */
 107 #else
 108 #define MAX_ALIAS       14      /* SVr3 filename length */
 109 #endif
 110
 111 /* location of user's personal info directory */
 112 #define PRIVATE_INFO    "%s/.terminfo"  /* plug getenv("HOME") into %s */
 113
 114 /*
 115  * Some traces are designed to be used via tic's verbose option (and similar in
 116  * infocmp and toe) rather than the 'trace()' function.  So we use the bits
 117  * above the normal trace() parameter as a debug-level.
 118  */
 119
 120 #define MAX_DEBUG_LEVEL 15
 121 #define DEBUG_LEVEL(n)  ((n) << TRACE_SHIFT)
 122
 123 #define set_trace_level(n) \
 124         _nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL), \
 125         _nc_tracing |= DEBUG_LEVEL(n)
 126
 127 #ifdef TRACE
 128 #define DEBUG(n, a)     if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
 129 #else
 130 #define DEBUG(n, a)     /*nothing*/
 131 #endif
 132
 133 /*
 134  * These are the types of tokens returned by the scanner.  The first
 135  * three are also used in the hash table of capability names.  The scanner
 136  * returns one of these values after loading the specifics into the global
 137  * structure curr_token.
 138  */
 139
 140 #define BOOLEAN 0               /* Boolean capability */
 141 #define NUMBER 1                /* Numeric capability */
 142 #define STRING 2                /* String-valued capability */
 143 #define CANCEL 3                /* Capability to be cancelled in following tc's */
 144 #define NAMES  4                /* The names for a terminal type */
 145 #define UNDEF  5                /* Undefined */
 146
 147 #define NO_PUSHBACK     -1      /* used in pushtype to indicate no pushback */
 148
 149 /*
 150  * The global structure in which the specific parts of a
 151  * scanned token are returned.
 152  */
 153
 154 struct token
 155 {
 156         char    *tk_name;       /* name of capability */
 157         int     tk_valnumber;   /* value of capability (if a number) */
 158         char    *tk_valstring;  /* value of capability (if a string) */
 159 };
 160
 161 /*
 162  * Offsets to string capabilities, with the corresponding functionkey codes.
 163  */
 164 struct tinfo_fkeys {
 165         unsigned offset;
 166         chtype code;
 167         };
 168
 169 typedef short HashValue;
 170
 171 /*
 172  * The file comp_captab.c contains an array of these structures, one per
 173  * possible capability.  These are indexed by a hash table array of pointers to
 174  * the same structures for use by the parser.
 175  */
 176 struct name_table_entry
 177 {
 178         const char *nte_name;   /* name to hash on */
 179         int     nte_type;       /* BOOLEAN, NUMBER or STRING */
 180         HashValue nte_index;    /* index of associated variable in its array */
 181         HashValue nte_link;     /* index in table of next hash, or -1 */
 182 };
 183
 184 /*
 185  * Use this structure to hide differences between terminfo and termcap tables.
 186  */
 187 typedef struct {
 188         unsigned table_size;
 189         const HashValue *table_data;
 190         HashValue (*hash_of)(const char *);
 191         int (*compare_names)(const char *, const char *);
 192 } HashData;
 193
 194 struct alias
 195 {
 196         const char      *from;
 197         const char      *to;
 198         const char      *source;
 199 };
 200
 201 #define NOTFOUND        ((struct name_table_entry *) 0)
 202
 203 /*
 204  * The casts are required for correct sign-propagation with systems such as
 205  * AIX, IRIX64, Solaris which default to unsigned characters.  The C standard
 206  * leaves this detail unspecified.
 207  */
 208
 209 /* out-of-band values for representing absent capabilities */
 210 #define ABSENT_BOOLEAN          ((signed char)-1)       /* 255 */
 211 #define ABSENT_NUMERIC          (-1)
 212 #define ABSENT_STRING           (char *)0
 213
 214 /* out-of-band values for representing cancels */
 215 #define CANCELLED_BOOLEAN       ((signed char)-2)       /* 254 */
 216 #define CANCELLED_NUMERIC       (-2)
 217 #define CANCELLED_STRING        (char *)(-1)
 218
 219 #define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
 220 #define VALID_NUMERIC(s) ((s) >= 0)
 221 #define VALID_STRING(s)  ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
 222
 223 /* termcap entries longer than this may break old binaries */
 224 #define MAX_TERMCAP_LENGTH      1023
 225
 226 /* this is a documented limitation of terminfo */
 227 #define MAX_TERMINFO_LENGTH     4096
 228
 229 #ifndef TERMINFO
 230 #define TERMINFO "/usr/share/terminfo"
 231 #endif
 232
 233 #ifdef NCURSES_TERM_ENTRY_H_incl
 234
 235 /*
 236  * These entrypoints are used only by the ncurses utilities such as tic.
 237  */
 238 #ifdef NCURSES_INTERNALS
 239 /* access.c */
 240 extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
 241 extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
 242 extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
 243 extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
 244 extern NCURSES_EXPORT(char *) _nc_basename (char *);
 245 extern NCURSES_EXPORT(char *) _nc_rootname (char *);
 246
 247 /* comp_captab.c */
 248 extern NCURSES_EXPORT(const struct name_table_entry *) _nc_get_table (bool);
 249 extern NCURSES_EXPORT(const HashData *) _nc_get_hash_info (bool);
 250 extern NCURSES_EXPORT(const struct alias *) _nc_get_alias_table (bool);
 251
 252 /* comp_hash.c: name lookup */
 253 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
 254         (const char *, int, bool);
 255
 256 /* comp_scan.c: lexical analysis */
 257 extern NCURSES_EXPORT(int)  _nc_get_token (bool);
 258 extern NCURSES_EXPORT(void) _nc_panic_mode (char);
 259 extern NCURSES_EXPORT(void) _nc_push_token (int);
 260 extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
 261 extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
 262 extern NCURSES_EXPORT_VAR(int) _nc_syntax;
 263 extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
 264 extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
 265 extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
 266 extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
 267 extern NCURSES_EXPORT_VAR(long) _nc_start_line;
 268 #define SYN_TERMINFO    0
 269 #define SYN_TERMCAP     1
 270
 271 /* comp_error.c: warning & abort messages */
 272 extern NCURSES_EXPORT(const char *) _nc_get_source (void);
 273 extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 274 extern NCURSES_EXPORT(void) _nc_get_type (char *name);
 275 extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
 276 extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
 277 extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 278 extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
 279 extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
 280
 281 /* comp_scan.c */
 282 extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
 283
 284 /* captoinfo.c: capability conversion */
 285 extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
 286 extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
 287
 288 /* home_terminfo.c */
 289 extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
 290
 291 /* init_keytry.c */
 292 #if     BROKEN_LINKER
 293 #define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
 294 extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
 295 #else
 296 extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
 297 #endif
 298
 299 /* lib_tparm.c */
 300 #define NUM_PARM 9
 301
 302 extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
 303
 304 extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
 305
 306 /* lib_trace.c */
 307 extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
 308 extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
 309 extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
 310
 311 /* lib_tputs.c */
 312 extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent;  /* Add one for every null sent */
 313
 314 /* comp_main.c: compiler main */
 315 extern const char * _nc_progname;
 316
 317 /* db_iterator.c */
 318 extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
 319 extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
 320 extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
 321 extern NCURSES_EXPORT(void) _nc_last_db(void);
 322
 323 /* write_entry.c */
 324 extern NCURSES_EXPORT(int) _nc_tic_written (void);
 325
 326 #endif /* NCURSES_INTERNALS */
 327
 328 /*
 329  * These entrypoints are used by tack.
 330  */
 331
 332 /* comp_hash.c: name lookup */
 333 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
 334         (const char *, const HashValue *);
 335 extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool);
 336
 337 /* comp_scan.c: lexical analysis */
 338 extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);
 339
 340 /* comp_expand.c: expand string into readable form */
 341 extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int);
 342
 343 /* comp_scan.c: decode string from readable form */
 344 extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *);
 345
 346 #endif /* NCURSES_TERM_ENTRY_H_incl */
 347
 348 #ifdef __cplusplus
 349 }
 350 #endif
 351
 352 /* *INDENT-ON* */
 353 #endif /* __TIC_H */