1/*- 2 * Copyright (c) 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1993, 1994, 1995, 1996 5 * Keith Bostic. All rights reserved. 6 * 7 * See the LICENSE file for redistribution information. 8 * 9 * $Id: gs.h,v 11.0 2012/10/17 06:34:37 zy Exp $ 10 */ 11 12#define TEMPORARY_FILE_STRING "/tmp" /* Default temporary file name. */ 13 14#include <nl_types.h> 15 16/* 17 * File reference structure (FREF). The structure contains the name of the 18 * file, along with the information that follows the name. 19 * 20 * !!! 21 * The read-only bit follows the file name, not the file itself. 22 */ 23struct _fref { 24 TAILQ_ENTRY(_fref) q; /* Linked list of file references. */ 25 char *name; /* File name. */ 26 char *tname; /* Backing temporary file name. */ 27 28 recno_t lno; /* 1-N: file cursor line. */ 29 size_t cno; /* 0-N: file cursor column. */ 30 31#define FR_CURSORSET 0x0001 /* If lno/cno values valid. */ 32#define FR_DONTDELETE 0x0002 /* Don't delete the temporary file. */ 33#define FR_EXNAMED 0x0004 /* Read/write renamed the file. */ 34#define FR_NAMECHANGE 0x0008 /* If the name changed. */ 35#define FR_NEWFILE 0x0010 /* File doesn't really exist yet. */ 36#define FR_RECOVER 0x0020 /* File is being recovered. */ 37#define FR_TMPEXIT 0x0040 /* Modified temporary file, no exit. */ 38#define FR_TMPFILE 0x0080 /* If file has no name. */ 39#define FR_UNLOCKED 0x0100 /* File couldn't be locked. */ 40 u_int16_t flags; 41}; 42 43/* Action arguments to scr_exadjust(). */ 44typedef enum { EX_TERM_CE, EX_TERM_SCROLL } exadj_t; 45 46/* Screen attribute arguments to scr_attr(). */ 47typedef enum { SA_ALTERNATE, SA_INVERSE } scr_attr_t; 48 49/* Key type arguments to scr_keyval(). */ 50typedef enum { KEY_VEOF, KEY_VERASE, KEY_VKILL, KEY_VWERASE } scr_keyval_t; 51 52/* 53 * GS: 54 * 55 * Structure that describes global state of the running program. 56 */ 57struct _gs { 58 char *progname; /* Programe name. */ 59 60 int id; /* Last allocated screen id. */ 61 TAILQ_HEAD(_dqh, _scr) dq[1]; /* Displayed screens. */ 62 TAILQ_HEAD(_hqh, _scr) hq[1]; /* Hidden screens. */ 63 64 SCR *ccl_sp; /* Colon command-line screen. */ 65 66 void *cl_private; /* Curses support private area. */ 67 68 /* File references. */ 69 TAILQ_HEAD(_frefh, _fref) frefq[1]; 70 71#define GO_COLUMNS 0 /* Global options: columns. */ 72#define GO_LINES 1 /* Global options: lines. */ 73#define GO_SECURE 2 /* Global options: secure. */ 74#define GO_TERM 3 /* Global options: terminal type. */ 75 OPTION opts[GO_TERM + 1]; 76 77 nl_catd catd; /* Message catalog descriptor. */ 78 MSGH msgq[1]; /* User message list. */ 79#define DEFAULT_NOPRINT '\1' /* Emergency non-printable character. */ 80 int noprint; /* Cached, unprintable character. */ 81 82 char *tmp_bp; /* Temporary buffer. */ 83 size_t tmp_blen; /* Temporary buffer size. */ 84 85 /* 86 * Ex command structures (EXCMD). Defined here because ex commands 87 * exist outside of any particular screen or file. 88 */ 89#define EXCMD_RUNNING(gp) (SLIST_FIRST((gp)->ecq)->clen != 0) 90 /* Ex command linked list. */ 91 SLIST_HEAD(_excmdh, _excmd) ecq[1]; 92 EXCMD excmd; /* Default ex command structure. */ 93 char *if_name; /* Current associated file. */ 94 recno_t if_lno; /* Current associated line number. */ 95 96 char *c_option; /* Ex initial, command-line command. */ 97 98#ifdef DEBUG 99 FILE *tracefp; /* Trace file pointer. */ 100#endif 101 102 EVENT *i_event; /* Array of input events. */ 103 size_t i_nelem; /* Number of array elements. */ 104 size_t i_cnt; /* Count of events. */ 105 size_t i_next; /* Offset of next event. */ 106 107 CB *dcbp; /* Default cut buffer pointer. */ 108 CB dcb_store; /* Default cut buffer storage. */ 109 SLIST_HEAD(_cuth, _cb) cutq[1]; /* Linked list of cut buffers. */ 110 111#define MAX_BIT_SEQ 0x7f /* Max + 1 fast check character. */ 112 SLIST_HEAD(_seqh, _seq) seqq[1];/* Linked list of maps, abbrevs. */ 113 bitstr_t bit_decl(seqb, MAX_BIT_SEQ + 1); 114 115#define MAX_FAST_KEY 0xff /* Max fast check character.*/ 116#define KEY_LEN(sp, ch) \ 117 (((ch) & ~MAX_FAST_KEY) == 0 ? \ 118 sp->gp->cname[(unsigned char)ch].len : v_key_len(sp, ch)) 119#define KEY_NAME(sp, ch) \ 120 (((ch) & ~MAX_FAST_KEY) == 0 ? \ 121 sp->gp->cname[(unsigned char)ch].name : v_key_name(sp, ch)) 122 struct { 123 char name[MAX_CHARACTER_COLUMNS + 1]; 124 u_int8_t len; 125 } cname[MAX_FAST_KEY + 1]; /* Fast lookup table. */ 126 127#define KEY_VAL(sp, ch) \ 128 (((ch) & ~MAX_FAST_KEY) == 0 ? \ 129 sp->gp->special_key[(unsigned char)ch] : v_key_val(sp,ch)) 130 e_key_t /* Fast lookup table. */ 131 special_key[MAX_FAST_KEY + 1]; 132 133/* Flags. */ 134#define G_ABBREV 0x0001 /* If have abbreviations. */ 135#define G_BELLSCHED 0x0002 /* Bell scheduled. */ 136#define G_INTERRUPTED 0x0004 /* Interrupted. */ 137#define G_RECOVER_SET 0x0008 /* Recover system initialized. */ 138#define G_SCRIPTED 0x0010 /* Ex script session. */ 139#define G_SCRWIN 0x0020 /* Scripting windows running. */ 140#define G_SNAPSHOT 0x0040 /* Always snapshot files. */ 141#define G_SRESTART 0x0080 /* Screen restarted. */ 142#define G_TMP_INUSE 0x0100 /* Temporary buffer in use. */ 143 u_int32_t flags; 144 145 /* Screen interface functions. */ 146 /* Add a string to the screen. */ 147 int (*scr_addstr) __P((SCR *, const char *, size_t)); 148 /* Add a string to the screen. */ 149 int (*scr_waddstr) __P((SCR *, const CHAR_T *, size_t)); 150 /* Toggle a screen attribute. */ 151 int (*scr_attr) __P((SCR *, scr_attr_t, int)); 152 /* Terminal baud rate. */ 153 int (*scr_baud) __P((SCR *, u_long *)); 154 /* Beep/bell/flash the terminal. */ 155 int (*scr_bell) __P((SCR *)); 156 /* Display a busy message. */ 157 void (*scr_busy) __P((SCR *, const char *, busy_t)); 158 /* Prepare child. */ 159 int (*scr_child) __P((SCR *)); 160 /* Clear to the end of the line. */ 161 int (*scr_clrtoeol) __P((SCR *)); 162 /* Return the cursor location. */ 163 int (*scr_cursor) __P((SCR *, size_t *, size_t *)); 164 /* Delete a line. */ 165 int (*scr_deleteln) __P((SCR *)); 166 /* Discard a screen. */ 167 int (*scr_discard) __P((SCR *, SCR **)); 168 /* Get a keyboard event. */ 169 int (*scr_event) __P((SCR *, EVENT *, u_int32_t, int)); 170 /* Ex: screen adjustment routine. */ 171 int (*scr_ex_adjust) __P((SCR *, exadj_t)); 172 int (*scr_fmap) /* Set a function key. */ 173 __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t)); 174 /* Get terminal key value. */ 175 int (*scr_keyval) __P((SCR *, scr_keyval_t, CHAR_T *, int *)); 176 /* Insert a line. */ 177 int (*scr_insertln) __P((SCR *)); 178 /* Handle an option change. */ 179 int (*scr_optchange) __P((SCR *, int, char *, u_long *)); 180 /* Move the cursor. */ 181 int (*scr_move) __P((SCR *, size_t, size_t)); 182 /* Message or ex output. */ 183 void (*scr_msg) __P((SCR *, mtype_t, char *, size_t)); 184 /* Refresh the screen. */ 185 int (*scr_refresh) __P((SCR *, int)); 186 /* Rename the file. */ 187 int (*scr_rename) __P((SCR *, char *, int)); 188 /* Reply to an event. */ 189 int (*scr_reply) __P((SCR *, int, char *)); 190 /* Set the screen type. */ 191 int (*scr_screen) __P((SCR *, u_int32_t)); 192 /* Split the screen. */ 193 int (*scr_split) __P((SCR *, SCR *)); 194 /* Suspend the editor. */ 195 int (*scr_suspend) __P((SCR *, int *)); 196 /* Print usage message. */ 197 void (*scr_usage) __P((void)); 198}; 199 200/* 201 * XXX 202 * Block signals if there are asynchronous events. Used to keep DB system calls 203 * from being interrupted and not restarted, as that will result in consistency 204 * problems. This should be handled by DB. 205 */ 206#ifdef BLOCK_SIGNALS 207#include <signal.h> 208extern sigset_t __sigblockset; 209#define SIGBLOCK \ 210 (void)sigprocmask(SIG_BLOCK, &__sigblockset, NULL) 211#define SIGUNBLOCK \ 212 (void)sigprocmask(SIG_UNBLOCK, &__sigblockset, NULL); 213#else 214#define SIGBLOCK 215#define SIGUNBLOCK 216#endif 217