contrib/ncurses/include/tic.h

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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 1.69 2012/03/17 18:22:10 tom Exp $
  37  *      tic.h - Global variables and structures for the terminfo
  38  *                      compiler.
  39  */
  40
  41 #ifndef __TIC_H
  42 #define __TIC_H
  43 /* *INDENT-OFF* */
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 #include <curses.h>     /* for the _tracef() prototype, ERR/OK, bool defs */
  49
  50 /*
  51 ** The format of compiled terminfo files is as follows:
  52 **
  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
  65 **                              capabilities.
  66 **
  67 **      NOTE that all short integers in the file are stored using VAX/PDP-style
  68 **      byte-order, i.e., least-significant byte first.
  69 **
  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.
  76 */
  77
  78 #define MAGIC           0432    /* first two bytes of a compiled entry */
  79
  80 #undef  BYTE
  81 #define BYTE(p,n)       (unsigned char)((p)[n])
  82
  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))
  86
  87 #define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC)
  88
  89 /*
  90  * The "maximum" here is misleading; XSI guarantees minimum values, which a
  91  * given implementation may exceed.
  92  */
  93 #define MAX_NAME_SIZE   512     /* maximum legal name field size (XSI:127) */
  94 #define MAX_ENTRY_SIZE  4096    /* maximum legal entry size */
  95
  96 /*
  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.
 101  */
 102 #if HAVE_LONG_FILE_NAMES
 103 #define MAX_ALIAS       32      /* smaller than POSIX minimum for PATH_MAX */
 104 #else
 105 #define MAX_ALIAS       14      /* SVr3 filename length */
 106 #endif
 107
 108 /* location of user's personal info directory */
 109 #define PRIVATE_INFO    "%s/.terminfo"  /* plug getenv("HOME") into %s */
 110
 111 /*
 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.
 115  */
 116
 117 #define MAX_DEBUG_LEVEL 15
 118 #define DEBUG_LEVEL(n)  ((n) << TRACE_SHIFT)
 119
 120 #define set_trace_level(n) \
 121         _nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL), \
 122         _nc_tracing |= DEBUG_LEVEL(n)
 123
 124 #ifdef TRACE
 125 #define DEBUG(n, a)     if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
 126 #else
 127 #define DEBUG(n, a)     /*nothing*/
 128 #endif
 129
 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 *);
 134
 135 /*
 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.
 140  */
 141
 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 */
 148
 149 #define NO_PUSHBACK     -1      /* used in pushtype to indicate no pushback */
 150
 151         /*
 152          *      The global structure in which the specific parts of a
 153          *      scanned token are returned.
 154          *
 155          */
 156
 157 struct token
 158 {
 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) */
 162 };
 163
 164 extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
 165
 166         /*
 167          * Offsets to string capabilities, with the corresponding functionkey
 168          * codes.
 169          */
 170 struct tinfo_fkeys {
 171         unsigned offset;
 172         chtype code;
 173         };
 174
 175 #if     BROKEN_LINKER
 176
 177 #define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
 178 extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
 179
 180 #else
 181
 182 extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
 183
 184 #endif
 185
 186 typedef short HashValue;
 187
 188         /*
 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.
 192          */
 193
 194 struct name_table_entry
 195 {
 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 */
 200 };
 201
 202         /*
 203          * Use this structure to hide differences between terminfo and termcap
 204          * tables.
 205          */
 206 typedef struct {
 207         unsigned table_size;
 208         const HashValue *table_data;
 209         HashValue (*hash_of)(const char *);
 210         int (*compare_names)(const char *, const char *);
 211 } HashData;
 212
 213 struct alias
 214 {
 215         const char      *from;
 216         const char      *to;
 217         const char      *source;
 218 };
 219
 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);
 224
 225 #define NOTFOUND        ((struct name_table_entry *) 0)
 226
 227 /*
 228  * The casts are required for correct sign-propagation with systems such as
 229  * AIX, IRIX64, Solaris which default to unsigned characters.  The C standard
 230  * leaves this detail unspecified.
 231  */
 232
 233 /* out-of-band values for representing absent capabilities */
 234 #define ABSENT_BOOLEAN          ((signed char)-1)       /* 255 */
 235 #define ABSENT_NUMERIC          (-1)
 236 #define ABSENT_STRING           (char *)0
 237
 238 /* out-of-band values for representing cancels */
 239 #define CANCELLED_BOOLEAN       ((signed char)-2)       /* 254 */
 240 #define CANCELLED_NUMERIC       (-2)
 241 #define CANCELLED_STRING        (char *)(-1)
 242
 243 #define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
 244 #define VALID_NUMERIC(s) ((s) >= 0)
 245 #define VALID_STRING(s)  ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
 246
 247 /* termcap entries longer than this may break old binaries */
 248 #define MAX_TERMCAP_LENGTH      1023
 249
 250 /* this is a documented limitation of terminfo */
 251 #define MAX_TERMINFO_LENGTH     4096
 252
 253 #ifndef TERMINFO
 254 #define TERMINFO "/usr/share/terminfo"
 255 #endif
 256
 257 #ifdef NCURSES_TERM_ENTRY_H_incl
 258
 259 /* access.c */
 260 extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
 261 extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
 262 extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
 263 extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
 264 extern NCURSES_EXPORT(char *) _nc_basename (char *);
 265 extern NCURSES_EXPORT(char *) _nc_rootname (char *);
 266
 267 /* comp_hash.c: name lookup */
 268 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
 269         (const char *, const HashValue *);
 270 extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
 271         (const char *, int, bool);
 272
 273 /* comp_scan.c: lexical analysis */
 274 extern NCURSES_EXPORT(int)  _nc_get_token (bool);
 275 extern NCURSES_EXPORT(void) _nc_panic_mode (char);
 276 extern NCURSES_EXPORT(void) _nc_push_token (int);
 277 extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);
 278 extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
 279 extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
 280 extern NCURSES_EXPORT_VAR(int) _nc_syntax;
 281 extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
 282 extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
 283 extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
 284 extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
 285 extern NCURSES_EXPORT_VAR(long) _nc_start_line;
 286 #define SYN_TERMINFO    0
 287 #define SYN_TERMCAP     1
 288
 289 /* comp_error.c: warning & abort messages */
 290 extern NCURSES_EXPORT(const char *) _nc_get_source (void);
 291 extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 292 extern NCURSES_EXPORT(void) _nc_get_type (char *name);
 293 extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
 294 extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
 295 extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 296 extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
 297 extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
 298
 299 /* comp_expand.c: expand string into readable form */
 300 extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int);
 301
 302 /* comp_scan.c: decode string from readable form */
 303 extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *);
 304
 305 /* captoinfo.c: capability conversion */
 306 extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
 307 extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
 308
 309 /* home_terminfo.c */
 310 extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
 311
 312 /* lib_tparm.c */
 313 #define NUM_PARM 9
 314
 315 extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
 316
 317 extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
 318
 319 /* lib_tputs.c */
 320 extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent;          /* Add one for every null sent */
 321
 322 /* comp_main.c: compiler main */
 323 extern const char * _nc_progname;
 324
 325 /* db_iterator.c */
 326 extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
 327 extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
 328 extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
 329 extern NCURSES_EXPORT(void) _nc_last_db(void);
 330
 331 /* write_entry.c */
 332 extern NCURSES_EXPORT(int) _nc_tic_written (void);
 333
 334 #endif /* NCURSES_TERM_ENTRY_H_incl */
 335
 336 #ifdef __cplusplus
 337 }
 338 #endif
 339
 340 /* *INDENT-ON* */
 341 #endif /* __TIC_H */