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 * Copyright (c) 1998-2012,2017 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            *
 * &quot;Software&quot;), 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 &quot;AS IS&quot;, 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 &lt;zmbenhal@netcom.com&gt; 1992,1995               *
 *     and: Eric S. Raymond &lt;esr@snark.thyrsus.com&gt;                         *
 *     and: Thomas E. Dickey 1996 on                                        *
 ****************************************************************************/

/*
 * $Id: tic.h,v 1.75 2017/07/29 23:21:06 tom Exp $
 *	tic.h - Global variables and structures for the terminfo compiler.
 */

#ifndef __TIC_H
#define __TIC_H
/* *INDENT-OFF* */
#ifdef __cplusplus
extern &quot;C&quot; {
#endif

#include &lt;ncurses_cfg.h&gt;

#include &lt;curses.h&gt;	/* for the _tracef() prototype, ERR/OK, bool defs */

/*
** The format of SVr2 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.
**
** In the SVr2 format, &quot;short&quot; means signed 16-bit numbers, which is sometimes
** inconvenient.  The numbers are signed, to provide for absent and canceled
** values.  ncurses6.1 introduced an extension to this compiled format, by
** making the Number Section a list of signed 32-bit integers.
**
**	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 */
#define MAGIC2		01036	/* first two bytes of a compiled 32-bit entry */

#undef  BYTE
#define BYTE(p,n)	(unsigned char)((p)[n])

#define IS_NEG1(p)	((BYTE(p,0) == 0377) &amp;&amp; (BYTE(p,1) == 0377))
#define IS_NEG2(p)	((BYTE(p,0) == 0376) &amp;&amp; (BYTE(p,1) == 0377))
#define LOW_MSB(p)	(BYTE(p,0) + 256*BYTE(p,1))

#define IS_TIC_MAGIC(p)	(LOW_MSB(p) == MAGIC || LOW_MSB(p) == MAGIC2)

#define quick_prefix(s) (!strncmp((s), &quot;b64:&quot;, 4) || !strncmp((s), &quot;hex:&quot;, 4))

/*
 * The &quot;maximum&quot; 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_SIZE1	4096	/* maximum legal entry size (SVr2) */
#define MAX_ENTRY_SIZE2	32768	/* maximum legal entry size (ncurses6.1) */

#if NCURSES_EXT_COLORS &amp;&amp; HAVE_INIT_EXTENDED_COLOR
#define MAX_ENTRY_SIZE MAX_ENTRY_SIZE2
#else
#define MAX_ENTRY_SIZE MAX_ENTRY_SIZE1
#endif

/*
 * 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&#039;s personal info directory */
#define PRIVATE_INFO	&quot;%s/.terminfo&quot;	/* plug getenv(&quot;HOME&quot;) into %s */

/*
 * Some traces are designed to be used via tic&#039;s verbose option (and similar in
 * infocmp and toe) rather than the &#039;trace()&#039; 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) &lt;&lt; TRACE_SHIFT)

#define set_trace_level(n) \
	_nc_tracing &amp;= DEBUG_LEVEL(MAX_DEBUG_LEVEL) \
		     + DEBUG_LEVEL(MAX_DEBUG_LEVEL) - 1, \
	_nc_tracing |= DEBUG_LEVEL(n)

#ifdef TRACE
#define DEBUG(n, a)	if (_nc_tracing &gt;= DEBUG_LEVEL(n)) _tracef a
#else
#define DEBUG(n, a)	/*nothing*/
#endif

/*
 * 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&#039;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) */
};

/*
 * Offsets to string capabilities, with the corresponding functionkey codes.
 */
struct tinfo_fkeys {
	unsigned offset;
	chtype code;
	};

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;
};

#define NOTFOUND	((struct name_table_entry *) 0)

/*
 * The casts are required for correct sign-propagation with systems such as
 * AIX, IRIX64, Solaris which default to unsigned characters.  The C standard
 * leaves this detail unspecified.
 */

/* 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) &lt;= 1) /* reject &quot;-1&quot; */
#define VALID_NUMERIC(s) ((s) &gt;= 0)
#define VALID_STRING(s)  ((s) != CANCELLED_STRING &amp;&amp; (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 &quot;/usr/share/terminfo&quot;
#endif

#ifdef NCURSES_TERM_ENTRY_H_incl

/*
 * These entrypoints are used only by the ncurses utilities such as tic.
 */
#ifdef NCURSES_INTERNALS
/* 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_captab.c */
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 struct alias *) _nc_get_alias_table (bool);

/* comp_hash.c: name lookup */
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_VAR(int) _nc_curr_col;
extern NCURSES_EXPORT_VAR(int) _nc_curr_line;
extern NCURSES_EXPORT_VAR(int) _nc_syntax;
extern NCURSES_EXPORT_VAR(int) _nc_strict_bsd;
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 &amp; 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_scan.c */
extern NCURSES_EXPORT_VAR(struct token)	_nc_curr_token;

/* 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);

/* init_keytry.c */
#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

/* 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_trace.c */
extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
extern NCURSES_EXPORT(const char *) _nc_visbuf (const char *);
extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);

/* 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 */
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);

#endif /* NCURSES_INTERNALS */

/*
 * These entrypoints are used by tack.
 */

/* comp_hash.c: name lookup */
extern NCURSES_EXPORT(struct name_table_entry const *) _nc_find_entry
	(const char *, const HashValue *);
extern NCURSES_EXPORT(const HashValue *) _nc_get_hash_table (bool);

/* comp_scan.c: lexical analysis */
extern NCURSES_EXPORT(void) _nc_reset_input (FILE *, char *);

/* 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 *);

#endif /* NCURSES_TERM_ENTRY_H_incl */

#ifdef __cplusplus
}
#endif

/* *INDENT-ON* */
#endif /* __TIC_H */
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