246 lines
8.9 KiB
C
246 lines
8.9 KiB
C
/****************************************************************************
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* Copyright (c) 1998 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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****************************************************************************/
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/*
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* tic.h - Global variables and structures for the terminfo
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* compiler.
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*
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*/
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#ifndef __TIC_H
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#define __TIC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <curses.h> /* for the _tracef() prototype, ERR/OK, bool defs */
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/*
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** The format of compiled terminfo files is as follows:
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**
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** Header (12 bytes), containing information given below
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** Names Section, containing the names of the terminal
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** Boolean Section, containing the values of all of the
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** boolean capabilities
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** A null byte may be inserted here to make
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** sure that the Number Section begins on an
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** even word boundary.
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** Number Section, containing the values of all of the numeric
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** capabilities, each as a short integer
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** String Section, containing short integer offsets into the
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** String Table, one per string capability
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** String Table, containing the actual characters of the string
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** capabilities.
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**
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** NOTE that all short integers in the file are stored using VAX/PDP-style
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** byte-order, i.e., least-significant byte first.
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**
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** There is no structure definition here because it would only confuse
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** matters. Terminfo format is a raw byte layout, not a structure
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** dump. If you happen to be on a little-endian machine with 16-bit
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** shorts that requires no padding between short members in a struct,
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** then there is a natural C structure that captures the header, but
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** not very helpfully.
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*/
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#define MAGIC 0432 /* first two bytes of a compiled entry */
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/*
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* The "maximum" here is misleading; XSI guarantees minimum values, which a
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* given implementation may exceed.
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*/
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#define MAX_NAME_SIZE 512 /* maximum legal name field size (XSI:127) */
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#define MAX_ENTRY_SIZE 4096 /* maximum legal entry size */
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/* The maximum size of individual name or alias is guaranteed in XSI to
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* be 14, since that corresponds to the older filename lengths. Newer
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* systems allow longer aliases, though not many terminal descriptions
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* are written to use them.
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*/
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#if HAVE_LONG_FILE_NAMES
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#define MAX_ALIAS 32 /* POSIX minimum for PATH_MAX */
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#else
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#define MAX_ALIAS 14 /* SVr3 filename length */
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#endif
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/* location of user's personal info directory */
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#define PRIVATE_INFO "%s/.terminfo" /* plug getenv("HOME") into %s */
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#define DEBUG(n, a) if (_nc_tracing & (1 << (n - 1))) _tracef a
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extern unsigned _nc_tracing;
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extern void _nc_tracef(char *, ...) GCC_PRINTFLIKE(1,2);
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extern const char *_nc_visbuf(const char *);
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/*
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* These are the types of tokens returned by the scanner. The first
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* three are also used in the hash table of capability names. The scanner
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* returns one of these values after loading the specifics into the global
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* structure curr_token.
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*/
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#define BOOLEAN 0 /* Boolean capability */
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#define NUMBER 1 /* Numeric capability */
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#define STRING 2 /* String-valued capability */
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#define CANCEL 3 /* Capability to be cancelled in following tc's */
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#define NAMES 4 /* The names for a terminal type */
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#define UNDEF 5 /* Undefined */
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#define NO_PUSHBACK -1 /* used in pushtype to indicate no pushback */
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/*
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* The global structure in which the specific parts of a
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* scanned token are returned.
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*
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*/
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struct token
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{
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char *tk_name; /* name of capability */
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int tk_valnumber; /* value of capability (if a number) */
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char *tk_valstring; /* value of capability (if a string) */
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};
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extern struct token _nc_curr_token;
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/*
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* The file comp_captab.c contains an array of these structures, one
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* per possible capability. These are indexed by a hash table array of
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* pointers to the same structures for use by the parser.
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*/
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struct name_table_entry
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{
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const char *nte_name; /* name to hash on */
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int nte_type; /* BOOLEAN, NUMBER or STRING */
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short nte_index; /* index of associated variable in its array */
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short nte_link; /* index in table of next hash, or -1 */
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};
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struct alias
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{
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const char *from;
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const char *to;
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const char *source;
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};
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extern const struct name_table_entry * const _nc_info_hash_table[];
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extern const struct name_table_entry * const _nc_cap_hash_table[];
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extern const struct alias _nc_capalias_table[];
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extern const struct alias _nc_infoalias_table[];
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extern const struct name_table_entry *_nc_get_table(bool);
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#define NOTFOUND ((struct name_table_entry *) 0)
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/* out-of-band values for representing absent capabilities */
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#define ABSENT_BOOLEAN -1
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#define ABSENT_NUMERIC -1
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#define ABSENT_STRING (char *)0
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/* out-of-band values for representing cancels */
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#define CANCELLED_BOOLEAN (char)(-2)
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#define CANCELLED_NUMERIC -2
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#define CANCELLED_STRING (char *)-1
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#define VALID_STRING(s) ((s) != CANCELLED_STRING && (s) != ABSENT_STRING)
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/* termcap entries longer than this may break old binaries */
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#define MAX_TERMCAP_LENGTH 1023
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/* this is a documented limitation of terminfo */
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#define MAX_TERMINFO_LENGTH 4096
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#ifndef TERMINFO
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#define TERMINFO "/usr/share/terminfo"
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#endif
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/* comp_hash.c: name lookup */
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struct name_table_entry const *_nc_find_entry(const char *,
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const struct name_table_entry *const *);
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struct name_table_entry const *_nc_find_type_entry(const char *,
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int,
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const struct name_table_entry *);
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/* comp_scan.c: lexical analysis */
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extern int _nc_get_token(void);
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extern void _nc_push_token(int);
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extern void _nc_reset_input(FILE *, char *);
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extern void _nc_panic_mode(char);
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extern int _nc_curr_line;
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extern int _nc_curr_col;
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extern long _nc_curr_file_pos;
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extern long _nc_comment_start, _nc_comment_end;
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extern int _nc_syntax;
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extern long _nc_start_line;
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#define SYN_TERMINFO 0
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#define SYN_TERMCAP 1
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/* comp_error.c: warning & abort messages */
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extern void _nc_set_source(const char *const name);
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extern void _nc_get_type(char *name);
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extern void _nc_set_type(const char *const name);
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extern void _nc_syserr_abort(const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
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extern void _nc_err_abort(const char *const,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
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extern void _nc_warning(const char *const,...) GCC_PRINTFLIKE(1,2);
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extern bool _nc_suppress_warnings;
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/* comp_expand.c: expand string into readable form */
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extern char *_nc_tic_expand(const char *, bool);
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/* comp_scan.c: decode string from readable form */
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extern char _nc_trans_string(char *);
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/* captoinfo.c: capability conversion */
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extern char *_nc_captoinfo(const char *, const char *, int const);
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extern char *_nc_infotocap(const char *, const char *, int const);
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/* lib_tputs.c */
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extern int _nc_nulls_sent; /* Add one for every null sent */
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/* comp_main.c: compiler main */
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extern const char *_nc_progname;
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/* read_entry.c */
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extern const char *_nc_tic_dir(const char *);
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/* write_entry.c */
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extern int _nc_tic_written(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TIC_H */
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