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d27c5b45cc
ncursesw-morphos/include/tic.h
Thomas E. Dickey d27c5b45cc ncurses 5.7 - patch 20090808 
+ separate _nc_find_entry() and _nc_find_type_entry() from
  implementation details of hash function.
2009-08-08 23:45:56 +00:00

347 lines
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/****************************************************************************
* Copyright (c) 1998-2007,2009 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996 on *
****************************************************************************/
/*
* $Id: tic.h,v 1.65 2009/08/08 17:52:46 tom Exp $
* tic.h - Global variables and structures for the terminfo
* compiler.
*/
#ifndef __TIC_H
#define __TIC_H
#ifdef __cplusplus
extern "C" {
#endif
#include <curses.h> /* for the _tracef() prototype, ERR/OK, bool defs */
/*
** The format of compiled terminfo files is as follows:
**
** Header (12 bytes), containing information given below
** Names Section, containing the names of the terminal
** Boolean Section, containing the values of all of the
** boolean capabilities
** A null byte may be inserted here to make
** sure that the Number Section begins on an
** even word boundary.
** Number Section, containing the values of all of the numeric
** capabilities, each as a short integer
** String Section, containing short integer offsets into the
** String Table, one per string capability
** String Table, containing the actual characters of the string
** capabilities.
**
** NOTE that all short integers in the file are stored using VAX/PDP-style
** byte-order, i.e., least-significant byte first.
**
** There is no structure definition here because it would only confuse
** matters. Terminfo format is a raw byte layout, not a structure
** dump. If you happen to be on a little-endian machine with 16-bit
** shorts that requires no padding between short members in a struct,
** then there is a natural C structure that captures the header, but
** not very helpfully.
*/
#define MAGIC 0432 /* first two bytes of a compiled entry */
#undef BYTE
#define BYTE(p,n) (unsigned char)((p)[n])
#define IS_NEG1(p) ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
#define IS_NEG2(p) ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
#define LOW_MSB(p) (BYTE(p,0) + 256*BYTE(p,1))
#define IS_TIC_MAGIC(p) (LOW_MSB(p) == MAGIC)
/*
* The "maximum" here is misleading; XSI guarantees minimum values, which a
* given implementation may exceed.
*/
#define MAX_NAME_SIZE 512 /* maximum legal name field size (XSI:127) */
#define MAX_ENTRY_SIZE 4096 /* maximum legal entry size */
/*
* The maximum size of individual name or alias is guaranteed in XSI to be at
* least 14, since that corresponds to the older filename lengths. Newer
* systems allow longer aliases, though not many terminal descriptions are
* written to use them. The MAX_ALIAS symbol is used for warnings.
*/
#if HAVE_LONG_FILE_NAMES
#define MAX_ALIAS 32 /* smaller than POSIX minimum for PATH_MAX */
#else
#define MAX_ALIAS 14 /* SVr3 filename length */
#endif
/* location of user's personal info directory */
#define PRIVATE_INFO "%s/.terminfo" /* plug getenv("HOME") into %s */
/*
* Some traces are designed to be used via tic's verbose option (and similar in
* infocmp and toe) rather than the 'trace()' function. So we use the bits
* above the normal trace() parameter as a debug-level.
*/
#define MAX_DEBUG_LEVEL 15
#define DEBUG_LEVEL(n) ((n) << TRACE_SHIFT)
#define set_trace_level(n) \
_nc_tracing &= DEBUG_LEVEL(MAX_DEBUG_LEVEL), \
_nc_tracing |= DEBUG_LEVEL(n)
#ifdef TRACE
#define DEBUG(n, a) if (_nc_tracing >= DEBUG_LEVEL(n)) _tracef a
#else
#define DEBUG(n, a) /*nothing*/
#endif
extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
extern NCURSES_EXPORT(void) _nc_tracef (char *, ...) GCC_PRINTFLIKE(1,2);
extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
/*
* These are the types of tokens returned by the scanner. The first
* three are also used in the hash table of capability names. The scanner
* returns one of these values after loading the specifics into the global
* structure curr_token.
*/
#define BOOLEAN 0 /* Boolean capability */
#define NUMBER 1 /* Numeric capability */
#define STRING 2 /* String-valued capability */
#define CANCEL 3 /* Capability to be cancelled in following tc's */
#define NAMES 4 /* The names for a terminal type */
#define UNDEF 5 /* Undefined */
#define NO_PUSHBACK -1 /* used in pushtype to indicate no pushback */
/*
* The global structure in which the specific parts of a
* scanned token are returned.
*
*/
struct token
{
char *tk_name; /* name of capability */
int tk_valnumber; /* value of capability (if a number) */
char *tk_valstring; /* value of capability (if a string) */
};
extern NCURSES_EXPORT_VAR(struct token) _nc_curr_token;
/*
* Offsets to string capabilities, with the corresponding functionkey
* codes.
*/
struct tinfo_fkeys {
unsigned offset;
chtype code;
};
#if BROKEN_LINKER
#define _nc_tinfo_fkeys _nc_tinfo_fkeysf()
extern NCURSES_EXPORT(const struct tinfo_fkeys *) _nc_tinfo_fkeysf (void);
#else
extern NCURSES_EXPORT_VAR(const struct tinfo_fkeys) _nc_tinfo_fkeys[];
#endif
typedef short HashValue;
/*
* The file comp_captab.c contains an array of these structures, one
* per possible capability. These are indexed by a hash table array of
* pointers to the same structures for use by the parser.
*/
struct name_table_entry
{
const char *nte_name; /* name to hash on */
int nte_type; /* BOOLEAN, NUMBER or STRING */
HashValue nte_index; /* index of associated variable in its array */
HashValue nte_link; /* index in table of next hash, or -1 */
};
/*
* Use this structure to hide differences between terminfo and termcap
* tables.
*/
typedef struct {
unsigned table_size;
const HashValue *table_data;
HashValue (*hash_of)(const char *);
int (*compare_names)(const char *, const char *);
} HashData;
struct alias
{
const char *from;
const char *to;
const char *source;
};
extern NCURSES_EXPORT(const struct name_table_entry *) _nc_get_table (bool);
extern NCURSES_EXPORT(const HashData *) _nc_get_hash_info (bool);
extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool);
extern NCURSES_EXPORT(const struct alias *) _nc_get_alias_table (bool);
#define NOTFOUND ((struct name_table_entry *) 0)
/* out-of-band values for representing absent capabilities */
#define ABSENT_BOOLEAN ((signed char)-1) /* 255 */
#define ABSENT_NUMERIC (-1)
#define ABSENT_STRING (char *)0
/* out-of-band values for representing cancels */
#define CANCELLED_BOOLEAN ((signed char)-2) /* 254 */
#define CANCELLED_NUMERIC (-2)
#define CANCELLED_STRING (char *)(-1)
#define VALID_BOOLEAN(s) ((unsigned char)(s) <= 1) /* reject "-1" */
#define VALID_NUMERIC(s) ((s) >= 0)
#define VALID_STRING(s) ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
/* termcap entries longer than this may break old binaries */
#define MAX_TERMCAP_LENGTH 1023
/* this is a documented limitation of terminfo */
#define MAX_TERMINFO_LENGTH 4096
#ifndef TERMINFO
#define TERMINFO "/usr/share/terminfo"
#endif
/* access.c */
extern NCURSES_EXPORT(unsigned) _nc_pathlast (const char *);
extern NCURSES_EXPORT(bool) _nc_is_abs_path (const char *);
extern NCURSES_EXPORT(bool) _nc_is_dir_path (const char *);
extern NCURSES_EXPORT(bool) _nc_is_file_path (const char *);
extern NCURSES_EXPORT(char *) _nc_basename (char *);
extern NCURSES_EXPORT(char *) _nc_rootname (char *);
/* comp_hash.c: name lookup */
extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
(const char *, const HashValue *);
extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_type_entry
(const char *, int, bool);
/* comp_scan.c: lexical analysis */
extern NCURSES_EXPORT(int) _nc_get_token (bool);
extern NCURSES_EXPORT(void) _nc_panic_mode (char);
extern NCURSES_EXPORT(void) _nc_push_token (int);
extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);
extern NCURSES_EXPORT_VAR(int) _nc_curr_col;
extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
extern NCURSES_EXPORT_VAR(int) _nc_syntax;
extern NCURSES_EXPORT_VAR(long) _nc_comment_end;
extern NCURSES_EXPORT_VAR(long) _nc_comment_start;
extern NCURSES_EXPORT_VAR(long) _nc_curr_file_pos;
extern NCURSES_EXPORT_VAR(long) _nc_start_line;
#define SYN_TERMINFO 0
#define SYN_TERMCAP 1
/* comp_error.c: warning & abort messages */
extern NCURSES_EXPORT(const char *) _nc_get_source (void);
extern NCURSES_EXPORT(void) _nc_err_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
extern NCURSES_EXPORT(void) _nc_get_type (char *name);
extern NCURSES_EXPORT(void) _nc_set_source (const char *const);
extern NCURSES_EXPORT(void) _nc_set_type (const char *const);
extern NCURSES_EXPORT(void) _nc_syserr_abort (const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
extern NCURSES_EXPORT(void) _nc_warning (const char *const,...) GCC_PRINTFLIKE(1,2);
extern NCURSES_EXPORT_VAR(bool) _nc_suppress_warnings;
/* comp_expand.c: expand string into readable form */
extern NCURSES_EXPORT(char *) _nc_tic_expand (const char *, bool, int);
/* comp_scan.c: decode string from readable form */
extern NCURSES_EXPORT(int) _nc_trans_string (char *, char *);
/* captoinfo.c: capability conversion */
extern NCURSES_EXPORT(char *) _nc_captoinfo (const char *, const char *, int const);
extern NCURSES_EXPORT(char *) _nc_infotocap (const char *, const char *, int const);
/* home_terminfo.c */
extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
/* lib_tparm.c */
#define NUM_PARM 9
extern NCURSES_EXPORT_VAR(int) _nc_tparm_err;
extern NCURSES_EXPORT(int) _nc_tparm_analyze(const char *, char **, int *);
/* lib_tputs.c */
extern NCURSES_EXPORT_VAR(int) _nc_nulls_sent; /* Add one for every null sent */
/* comp_main.c: compiler main */
extern const char * _nc_progname;
/* db_iterator.c */
typedef enum {
dbdTIC = 0,
#if USE_DATABASE
dbdEnvOnce,
dbdHome,
dbdEnvList,
dbdCfgList,
dbdCfgOnce,
#endif
#if USE_TERMCAP
dbdEnvOnce2,
dbdEnvList2,
dbdCfgList2,
#endif
dbdLAST
} DBDIRS;
extern NCURSES_EXPORT(const char *) _nc_next_db(DBDIRS *, int *);
extern NCURSES_EXPORT(const char *) _nc_tic_dir (const char *);
extern NCURSES_EXPORT(void) _nc_first_db(DBDIRS *, int *);
extern NCURSES_EXPORT(void) _nc_last_db(void);
/* write_entry.c */
extern NCURSES_EXPORT(int) _nc_tic_written (void);
#ifdef __cplusplus
}
#endif
#endif /* __TIC_H */
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