59cc89c2c2
files, curses, db, regex etc that we already have). The other glue will follow shortly. Obtained from: Keith Bostic <bostic@bostic.com>
211 lines
7.3 KiB
C
211 lines
7.3 KiB
C
/*-
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* Copyright (c) 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*
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* @(#)gs.h 10.34 (Berkeley) 9/24/96
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*/
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#define TEMPORARY_FILE_STRING "/tmp" /* Default temporary file name. */
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/*
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* File reference structure (FREF). The structure contains the name of the
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* file, along with the information that follows the name.
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*
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* !!!
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* The read-only bit follows the file name, not the file itself.
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*/
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struct _fref {
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CIRCLEQ_ENTRY(_fref) q; /* Linked list of file references. */
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char *name; /* File name. */
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char *tname; /* Backing temporary file name. */
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recno_t lno; /* 1-N: file cursor line. */
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size_t cno; /* 0-N: file cursor column. */
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#define FR_CURSORSET 0x0001 /* If lno/cno values valid. */
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#define FR_DONTDELETE 0x0002 /* Don't delete the temporary file. */
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#define FR_EXNAMED 0x0004 /* Read/write renamed the file. */
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#define FR_NAMECHANGE 0x0008 /* If the name changed. */
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#define FR_NEWFILE 0x0010 /* File doesn't really exist yet. */
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#define FR_RECOVER 0x0020 /* File is being recovered. */
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#define FR_TMPEXIT 0x0040 /* Modified temporary file, no exit. */
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#define FR_TMPFILE 0x0080 /* If file has no name. */
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#define FR_UNLOCKED 0x0100 /* File couldn't be locked. */
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u_int16_t flags;
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};
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/* Action arguments to scr_exadjust(). */
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typedef enum { EX_TERM_CE, EX_TERM_SCROLL } exadj_t;
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/* Screen attribute arguments to scr_attr(). */
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typedef enum { SA_ALTERNATE, SA_INVERSE } scr_attr_t;
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/* Key type arguments to scr_keyval(). */
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typedef enum { KEY_VEOF, KEY_VERASE, KEY_VKILL, KEY_VWERASE } scr_keyval_t;
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/*
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* GS:
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*
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* Structure that describes global state of the running program.
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*/
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struct _gs {
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char *progname; /* Programe name. */
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int id; /* Last allocated screen id. */
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CIRCLEQ_HEAD(_dqh, _scr) dq; /* Displayed screens. */
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CIRCLEQ_HEAD(_hqh, _scr) hq; /* Hidden screens. */
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SCR *ccl_sp; /* Colon command-line screen. */
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void *perl_interp; /* Perl interpreter. */
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void *tcl_interp; /* Tcl_Interp *: Tcl interpreter. */
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void *cl_private; /* Curses support private area. */
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void *ip_private; /* IP support private area. */
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void *tk_private; /* Tk/Tcl support private area. */
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/* File references. */
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CIRCLEQ_HEAD(_frefh, _fref) frefq;
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#define GO_COLUMNS 0 /* Global options: columns. */
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#define GO_LINES 1 /* Global options: lines. */
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#define GO_SECURE 2 /* Global options: secure. */
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#define GO_TERM 3 /* Global options: terminal type. */
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OPTION opts[GO_TERM + 1];
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DB *msg; /* Message catalog DB. */
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MSGH msgq; /* User message list. */
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#define DEFAULT_NOPRINT '\1' /* Emergency non-printable character. */
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CHAR_T noprint; /* Cached, unprintable character. */
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char *tmp_bp; /* Temporary buffer. */
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size_t tmp_blen; /* Temporary buffer size. */
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/*
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* Ex command structures (EXCMD). Defined here because ex commands
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* exist outside of any particular screen or file.
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*/
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#define EXCMD_RUNNING(gp) ((gp)->ecq.lh_first->clen != 0)
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LIST_HEAD(_excmdh, _excmd) ecq; /* Ex command linked list. */
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EXCMD excmd; /* Default ex command structure. */
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char *if_name; /* Current associated file. */
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recno_t if_lno; /* Current associated line number. */
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char *c_option; /* Ex initial, command-line command. */
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#ifdef DEBUG
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FILE *tracefp; /* Trace file pointer. */
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#endif
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EVENT *i_event; /* Array of input events. */
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size_t i_nelem; /* Number of array elements. */
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size_t i_cnt; /* Count of events. */
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size_t i_next; /* Offset of next event. */
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CB *dcbp; /* Default cut buffer pointer. */
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CB dcb_store; /* Default cut buffer storage. */
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LIST_HEAD(_cuth, _cb) cutq; /* Linked list of cut buffers. */
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#define MAX_BIT_SEQ 128 /* Max + 1 fast check character. */
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LIST_HEAD(_seqh, _seq) seqq; /* Linked list of maps, abbrevs. */
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bitstr_t bit_decl(seqb, MAX_BIT_SEQ);
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#define MAX_FAST_KEY 254 /* Max fast check character.*/
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#define KEY_LEN(sp, ch) \
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((unsigned char)(ch) <= MAX_FAST_KEY ? \
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sp->gp->cname[(unsigned char)ch].len : v_key_len(sp, ch))
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#define KEY_NAME(sp, ch) \
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((unsigned char)(ch) <= MAX_FAST_KEY ? \
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sp->gp->cname[(unsigned char)ch].name : v_key_name(sp, ch))
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struct {
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CHAR_T name[MAX_CHARACTER_COLUMNS + 1];
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u_int8_t len;
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} cname[MAX_FAST_KEY + 1]; /* Fast lookup table. */
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#define KEY_VAL(sp, ch) \
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((unsigned char)(ch) <= MAX_FAST_KEY ? \
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sp->gp->special_key[(unsigned char)ch] : \
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(unsigned char)(ch) > sp->gp->max_special ? 0 : v_key_val(sp,ch))
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CHAR_T max_special; /* Max special character. */
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u_char /* Fast lookup table. */
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special_key[MAX_FAST_KEY + 1];
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/* Flags. */
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#define G_ABBREV 0x0001 /* If have abbreviations. */
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#define G_BELLSCHED 0x0002 /* Bell scheduled. */
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#define G_INTERRUPTED 0x0004 /* Interrupted. */
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#define G_RECOVER_SET 0x0008 /* Recover system initialized. */
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#define G_SCRIPTED 0x0010 /* Ex script session. */
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#define G_SCRWIN 0x0020 /* Scripting windows running. */
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#define G_SNAPSHOT 0x0040 /* Always snapshot files. */
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#define G_SRESTART 0x0080 /* Screen restarted. */
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#define G_TMP_INUSE 0x0100 /* Temporary buffer in use. */
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u_int32_t flags;
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/* Screen interface functions. */
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/* Add a string to the screen. */
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int (*scr_addstr) __P((SCR *, const char *, size_t));
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/* Toggle a screen attribute. */
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int (*scr_attr) __P((SCR *, scr_attr_t, int));
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/* Terminal baud rate. */
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int (*scr_baud) __P((SCR *, u_long *));
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/* Beep/bell/flash the terminal. */
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int (*scr_bell) __P((SCR *));
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/* Display a busy message. */
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void (*scr_busy) __P((SCR *, const char *, busy_t));
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/* Clear to the end of the line. */
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int (*scr_clrtoeol) __P((SCR *));
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/* Return the cursor location. */
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int (*scr_cursor) __P((SCR *, size_t *, size_t *));
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/* Delete a line. */
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int (*scr_deleteln) __P((SCR *));
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/* Get a keyboard event. */
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int (*scr_event) __P((SCR *, EVENT *, u_int32_t, int));
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/* Ex: screen adjustment routine. */
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int (*scr_ex_adjust) __P((SCR *, exadj_t));
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int (*scr_fmap) /* Set a function key. */
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__P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
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/* Get terminal key value. */
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int (*scr_keyval) __P((SCR *, scr_keyval_t, CHAR_T *, int *));
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/* Insert a line. */
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int (*scr_insertln) __P((SCR *));
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/* Handle an option change. */
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int (*scr_optchange) __P((SCR *, int, char *, u_long *));
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/* Move the cursor. */
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int (*scr_move) __P((SCR *, size_t, size_t));
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/* Message or ex output. */
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void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
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/* Refresh the screen. */
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int (*scr_refresh) __P((SCR *, int));
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/* Rename the file. */
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int (*scr_rename) __P((SCR *, char *, int));
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/* Set the screen type. */
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int (*scr_screen) __P((SCR *, u_int32_t));
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/* Suspend the editor. */
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int (*scr_suspend) __P((SCR *, int *));
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/* Print usage message. */
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void (*scr_usage) __P((void));
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};
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/*
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* XXX
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* Block signals if there are asynchronous events. Used to keep DB system calls
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* from being interrupted and not restarted, as that will result in consistency
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* problems. This should be handled by DB.
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*/
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#ifdef BLOCK_SIGNALS
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#include <signal.h>
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extern sigset_t __sigblockset;
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#define SIGBLOCK \
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(void)sigprocmask(SIG_BLOCK, &__sigblockset, NULL)
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#define SIGUNBLOCK \
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(void)sigprocmask(SIG_UNBLOCK, &__sigblockset, NULL);
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#else
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#define SIGBLOCK
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#define SIGUNBLOCK
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#endif
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