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/* $OpenBSD: gs.h,v 1.9 2006/01/08 21:05:39 miod Exp $ */
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*
* @(#)gs.h 10.34 (Berkeley) 9/24/96
*/
#define TEMPORARY_FILE_STRING "/tmp" /* Default temporary file name. */
/*
* File reference structure (FREF). The structure contains the name of the
* file, along with the information that follows the name.
*
* !!!
* The read-only bit follows the file name, not the file itself.
*/
struct _fref {
CIRCLEQ_ENTRY(_fref) q; /* Linked list of file references. */
char *name; /* File name. */
char *tname; /* Backing temporary file name. */
recno_t lno; /* 1-N: file cursor line. */
size_t cno; /* 0-N: file cursor column. */
#define FR_CURSORSET 0x0001 /* If lno/cno values valid. */
#define FR_DONTDELETE 0x0002 /* Don't delete the temporary file. */
#define FR_EXNAMED 0x0004 /* Read/write renamed the file. */
#define FR_NAMECHANGE 0x0008 /* If the name changed. */
#define FR_NEWFILE 0x0010 /* File doesn't really exist yet. */
#define FR_RECOVER 0x0020 /* File is being recovered. */
#define FR_TMPEXIT 0x0040 /* Modified temporary file, no exit. */
#define FR_TMPFILE 0x0080 /* If file has no name. */
#define FR_UNLOCKED 0x0100 /* File couldn't be locked. */
u_int16_t flags;
};
/* Action arguments to scr_exadjust(). */
typedef enum { EX_TERM_CE, EX_TERM_SCROLL } exadj_t;
/* Screen attribute arguments to scr_attr(). */
typedef enum { SA_ALTERNATE, SA_INVERSE } scr_attr_t;
/* Key type arguments to scr_keyval(). */
typedef enum { KEY_VEOF, KEY_VERASE, KEY_VKILL, KEY_VWERASE } scr_keyval_t;
/*
* GS:
*
* Structure that describes global state of the running program.
*/
struct _gs {
char *progname; /* Programe name. */
int id; /* Last allocated screen id. */
CIRCLEQ_HEAD(_dqh, _scr) dq; /* Displayed screens. */
CIRCLEQ_HEAD(_hqh, _scr) hq; /* Hidden screens. */
SCR *ccl_sp; /* Colon command-line screen. */
void *perl_interp; /* Perl interpreter. */
void *tcl_interp; /* Tcl_Interp *: Tcl interpreter. */
void *cl_private; /* Curses support private area. */
void *ip_private; /* IP support private area. */
void *tk_private; /* Tk/Tcl support private area. */
/* File references. */
CIRCLEQ_HEAD(_frefh, _fref) frefq;
#define GO_COLUMNS 0 /* Global options: columns. */
#define GO_LINES 1 /* Global options: lines. */
#define GO_SECURE 2 /* Global options: secure. */
#define GO_TERM 3 /* Global options: terminal type. */
OPTION opts[GO_TERM + 1];
DB *msg; /* Message catalog DB. */
MSGH msgq; /* User message list. */
#define DEFAULT_NOPRINT '\1' /* Emergency non-printable character. */
CHAR_T noprint; /* Cached, unprintable character. */
char *tmp_bp; /* Temporary buffer. */
size_t tmp_blen; /* Temporary buffer size. */
/*
* Ex command structures (EXCMD). Defined here because ex commands
* exist outside of any particular screen or file.
*/
#define EXCMD_RUNNING(gp) (LIST_FIRST(&(gp)->ecq)->clen != 0)
LIST_HEAD(_excmdh, _excmd) ecq; /* Ex command linked list. */
EXCMD excmd; /* Default ex command structure. */
char *if_name; /* Current associated file. */
recno_t if_lno; /* Current associated line number. */
char *c_option; /* Ex initial, command-line command. */
#ifdef DEBUG
FILE *tracefp; /* Trace file pointer. */
#endif
EVENT *i_event; /* Array of input events. */
size_t i_nelem; /* Number of array elements. */
size_t i_cnt; /* Count of events. */
size_t i_next; /* Offset of next event. */
CB *dcbp; /* Default cut buffer pointer. */
CB dcb_store; /* Default cut buffer storage. */
LIST_HEAD(_cuth, _cb) cutq; /* Linked list of cut buffers. */
#define MAX_BIT_SEQ 128 /* Max + 1 fast check character. */
LIST_HEAD(_seqh, _seq) seqq; /* Linked list of maps, abbrevs. */
bitstr_t bit_decl(seqb, MAX_BIT_SEQ);
#define MAX_FAST_KEY 254 /* Max fast check character.*/
#define KEY_LEN(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
(sp)->gp->cname[(unsigned char)(ch)].len : \
v_key_len((sp), (ch)))
#define KEY_NAME(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
(sp)->gp->cname[(unsigned char)(ch)].name : \
v_key_name((sp), (ch)))
struct {
CHAR_T name[MAX_CHARACTER_COLUMNS + 1];
u_int8_t len;
} cname[MAX_FAST_KEY + 1]; /* Fast lookup table. */
#define KEY_VAL(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
(sp)->gp->special_key[(unsigned char)(ch)] : \
(unsigned char)(ch) > (sp)->gp->max_special ? 0 : \
v_key_val((sp),(ch)))
CHAR_T max_special; /* Max special character. */
u_char /* Fast lookup table. */
special_key[MAX_FAST_KEY + 1];
/* Flags. */
#define G_ABBREV 0x0001 /* If have abbreviations. */
#define G_BELLSCHED 0x0002 /* Bell scheduled. */
#define G_INTERRUPTED 0x0004 /* Interrupted. */
#define G_RECOVER_SET 0x0008 /* Recover system initialized. */
#define G_SCRIPTED 0x0010 /* Ex script session. */
#define G_SCRWIN 0x0020 /* Scripting windows running. */
#define G_SNAPSHOT 0x0040 /* Always snapshot files. */
#define G_SRESTART 0x0080 /* Screen restarted. */
#define G_TMP_INUSE 0x0100 /* Temporary buffer in use. */
u_int32_t flags;
/* Screen interface functions. */
/* Add a string to the screen. */
int (*scr_addstr)(SCR *, const char *, size_t);
/* Toggle a screen attribute. */
int (*scr_attr)(SCR *, scr_attr_t, int);
/* Terminal baud rate. */
int (*scr_baud)(SCR *, u_long *);
/* Beep/bell/flash the terminal. */
int (*scr_bell)(SCR *);
/* Display a busy message. */
void (*scr_busy)(SCR *, const char *, busy_t);
/* Clear to the end of the line. */
int (*scr_clrtoeol)(SCR *);
/* Return the cursor location. */
int (*scr_cursor)(SCR *, size_t *, size_t *);
/* Delete a line. */
int (*scr_deleteln)(SCR *);
/* Get a keyboard event. */
int (*scr_event)(SCR *, EVENT *, u_int32_t, int);
/* Ex: screen adjustment routine. */
int (*scr_ex_adjust)(SCR *, exadj_t);
int (*scr_fmap) /* Set a function key. */
(SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t);
/* Get terminal key value. */
int (*scr_keyval)(SCR *, scr_keyval_t, CHAR_T *, int *);
/* Insert a line. */
int (*scr_insertln)(SCR *);
/* Handle an option change. */
int (*scr_optchange)(SCR *, int, char *, u_long *);
/* Move the cursor. */
int (*scr_move)(SCR *, size_t, size_t);
/* Message or ex output. */
void (*scr_msg)(SCR *, mtype_t, char *, size_t);
/* Refresh the screen. */
int (*scr_refresh)(SCR *, int);
/* Rename the file. */
int (*scr_rename)(SCR *, char *, int);
/* Set the screen type. */
int (*scr_screen)(SCR *, u_int32_t);
/* Suspend the editor. */
int (*scr_suspend)(SCR *, int *);
/* Print usage message. */
void (*scr_usage)(void);
};
/*
* XXX
* Block signals if there are asynchronous events. Used to keep DB system calls
* from being interrupted and not restarted, as that will result in consistency
* problems. This should be handled by DB.
*/
#ifdef BLOCK_SIGNALS
#include <signal.h>
extern sigset_t __sigblockset;
#define SIGBLOCK \
(void)sigprocmask(SIG_BLOCK, &__sigblockset, NULL)
#define SIGUNBLOCK \
(void)sigprocmask(SIG_UNBLOCK, &__sigblockset, NULL);
#else
#define SIGBLOCK
#define SIGUNBLOCK
#endif
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