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minix/commands/elle/elle.h
Ben Gras 9865aeaa79 Initial revision
2005-04-21 14:53:53 +00:00

364 lines
13 KiB
C
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/* ELLE - Copyright 1982, 1984 by Ken Harrenstien, SRI International
* This software is quasi-public; it may be used freely with
* like software, but may NOT be sold or made part of licensed
* products without permission of the author.
*/
/*
* ELLE.H Global ELLE definitions
*/
#ifndef EXT
#define EXT extern /* Default assumes these are referencing decls */
#endif
/* Make identifiers unique in 1st 6 chars as per ANSI rule for externals */
#define tvc_cin tvccin
#define tvc_cdn tvccdn
#define tvc_lin tvclin
#define tvc_ldn tvcldn
#define ev_fno1 evfno1
#define ev_fno2 evfno2
#define ev_fnn1 evfnn1
#define ev_fnn2 evfnn2
#define ask_sall asksal /* eebuff.c */
#define ask_save asksav
#define buf_tmod buftmo
#define buf_tmat buftma
#define e_gobob egobob /* eeedit.c */
#define e_gobol egobol
#define e_goeob egoeob
#define e_goeol egoeol
#define fill_prefix filpfx /* eefill.c */
#define fill_plen filpln
#define fill_cur_line filcln
#define kill_ptr kilptr /* eef3.c */
#define kill_push kilpsh
#define ed_insert edinst /* eefed.c */
#define ed_insn edinsn
#define ed_deln eddeln
#define ed_delete eddele
#define f_fillreg ffilrg /* eejust.c */
#define f_fillpara ffilpa
#include "eesite.h" /* Insert site-dependent flags and parameters */
#include "sb.h" /* Insert SB package definitions */
#include "eeprof.h" /* Insert user profile definition. This is a
* separate file so ELLEC can use it too. */
#include "eefidx.h" /* Insert desired function defs */
/* ELLE Compile-time parameter defaults */
#ifndef KILL_LEN
#define KILL_LEN 8 /* Size of kill ring */
#endif
#ifndef MAXHT
#define MAXHT 72 /* Height (# lines) of largest screen we'll suport */
#endif
#ifndef MAXLINE
#define MAXLINE 132 /* Width (# chars) of largest screen we'll support */
#endif
#ifndef FNAMELEN
#define FNAMELEN 14 /* Sys-dep: Max size of last filename component */
#endif /* Check FNAMSIZ if you change this. */
#ifndef FNAMSIZ
#define FNAMSIZ 100 /* Sys-dep: Max size of complete filename */
#endif /* This must be at least as large as FNAMELEN! */
#ifndef ISRCHLIM
#define ISRCHLIM 50 /* Max # of chars to allow I-search on */
#endif
#ifndef TOBFSIZ
#define TOBFSIZ 80 /* Size of TTY output buffer */
#endif
#ifndef TIBFSIZ
#define TIBFSIZ 50 /* Size of TTY input buffer */
#endif
#ifndef ECHOLINES
#define ECHOLINES 1 /* # of lines for echo area (below mode line) */
#endif
#ifndef MAXARGFILES
#define MAXARGFILES 2 /* # of filename args OK at startup */
#endif
/* ELLE initialized variables.
* Initial values are defined in EEVINI.C, but the vars must be
* declared here as well so that references from all modules will
* compile correctly.
*/
extern char *ev_verstr; /* String: Editor name and version # */
extern int ev_filmod; /* Default file creation mode */
extern char *ev_fno1,*ev_fno2; /* Pre, postfix for "old" filenames */
extern char *ev_fnn1,*ev_fnn2; /* Pre, postfix for "new" filenames */
extern int ev_fcolumn; /* Fill Column variable */
#if FX_INDCOMM
extern int ev_ccolumn; /* Comment Column variable */
#endif
extern int ev_nwpct, ev_mvpct; /* New window selection percentages */
#if FX_SOWIND
extern int ev_modwso; /* Initial mode window standout flag */
#endif
#if FX_2MODEWINDS
extern int ev_2modws; /* Initial setting of 2-mode-window flag */
#endif
extern char *ev_markshow; /* String to show when Set Mark done */
extern char *ev_helpfile; /* Location of ELLE help file */
extern char *ev_profile; /* Filename of ELLE binary user profile */
extern struct profile def_prof; /* ELLE default user profile */
/* Global variables */
EXT chroff cur_dot; /* Current dot */
EXT chroff mark_dot; /* Dot for mark */
EXT int mark_p; /* flag indicating whether mark exists */
EXT int this_cmd, last_cmd; /* Command type */
EXT int unrchf; /* Stuffed character back for readcommand */
EXT int exp; /* Numeric argument for commands */
EXT int exp_p; /* Flag meaning an arg was given */
EXT int pgoal; /* Permanent goal column */
EXT int goal;
EXT char *srch_str; /* Last search string specified (0 = none) */
EXT int srch_len; /* Length of srch_str string */
EXT int ask_len; /* Length of last string returned by "ask" */
EXT char *homedir; /* User's home directory */
EXT int kill_ptr; /* Index into kill ring */
extern SBSTR *kill_ring[]; /* Kill ring table (allocated in eevini) */
/* Editor Command types */
#define KILLCMD 1 /* Kill command, for kill merging */
#define ARGCMD 2 /* Argument-setter, for main loop */
#define YANKCMD 3 /* Yank command, for yankpop */
#define LINECMD 4 /* Next or previous line goal hacking */
#if IMAGEN
#define INSCMD 5 /* Simple char-insert command, for autowrap */
#endif /*IMAGEN*/
/* Misc char definitions */
#define CTRL(ch) (037&ch)
#define BELL ('\007') /* Will become \a in ANSI */
#define BS ('\b')
#define TAB ('\t')
#define LF ('\n')
#define FF ('\f')
#define CR ('\r')
#define ESC ('\033')
#define SP (' ')
#define DEL ('\177')
#define CB_META (0200) /* Meta bit in command char */
#define CB_EXT (0400) /* Extend bit in command char */
#define METIZER ESC
#define EXTIZER CTRL('X')
/* Terminal parameters - set at runtime startup */
EXT char *tv_stype; /* Terminal type string specified by user/system */
EXT int scr_ht; /* # lines of main screen area */
EXT int scr_wid; /* # columns of screen */
EXT int scr_wd0; /* scr_wid - 1 (for 0-origin stuff) */
EXT int trm_ospeed; /* Output speed index */
EXT int tvc_pos; /* Cost for absolute move (# of output chars) */
EXT int tvc_bs; /* Cost for backspace */
EXT int tvc_ci, tvc_cin; /* Char ins cost per call, cost per column */
EXT int tvc_cd, tvc_cdn; /* Char del " " " " " " */
EXT int tvc_li, tvc_lin; /* Line ins cost per call, cost per line */
EXT int tvc_ld, tvc_ldn; /* Line del " " " " " " */
EXT int trm_flags; /* Terminal capabilities - bit flags */
/* Maybe change to word vars someday (faster) */
#define TF_IDLIN 01 /* Has I/D line */
#define TF_IDCHR 02 /* Has I/D char */
#define TF_SO 04 /* Has usable standout mode */
#define TF_CLEOL 010 /* Has clear-to-eol */
#define TF_METAKEY 020 /* Has meta key */
#define TF_DIRVID 040 /* Has direct-video type interface */
/* Redisplay definitions */
EXT int curs_lin; /* Line # of current cursor (0 origin) */
EXT int curs_col; /* Column # of current cursor (0 origin) */
EXT int rd_type; /* Global var: holds redisplay "hints" */
#define redp(n) rd_type |= (n)
#define RD_SCREEN 01 /* Clear everything and redisplay */
#define RD_WINDS 02 /* Check all windows for changes (b/emod) */
#define RD_MODE 04 /* Mode line has changed, update it. */
#define RD_WINRES 0400 /* Assume all of window was changed (clear b/emod) */
#define RD_MOVE 010 /* Cursor has moved */
#define RD_UPDWIN 020 /* Window fixed, must update modified screen lines */
/*#define RD_ICHR 0 *//* Hint: Char insert done */
/*#define RD_DCHR 0 *//* Hint: Char del done */
#define RD_ILIN 0100 /* Hint: Line insert done */
#define RD_DLIN 0200 /* Hint: Line del done */
/* #define RD_MOVWIN 02000 *//* Window should be re-positioned */
#define RD_FIXWIN 02000 /* Window needs fixing (call fix_wind) */
#define RD_TMOD 04000 /* Text changed in this window, check it. */
#define RD_WINCLR 010000 /* Clear window with CLEOLs (not yet) */
#define RD_CHKALL 020000 /* Check all windows for redisplay flags */
#if IMAGEN
#define RD_REDO 040000 /* Just re-do the entire window, don't think */
#endif /*IMAGEN*/
/* Flags with global effects, only seen in rd_type */
#define RDS_GLOBALS (RD_SCREEN|RD_MODE|RD_WINDS|RD_CHKALL)
/* Flags which are allowed per-window (in w_redp) */
#define RDS_WINFLGS (~RDS_GLOBALS)
/* Flags which force FIX_WIND() to do something */
#define RDS_DOFIX (RD_WINRES|RD_TMOD|RD_FIXWIN|RD_MOVE)
#define CI_CLINE '!' /* Char indicator for continued line */
#define CI_CNTRL '^' /* Char indicator for control chars */
#define CI_META '~' /* Char indicator for meta-bit (8th) set */
#define CI_TOP '|' /* Char indicator for top-bit (9th) set */
#define MAXCHAR (8+3) /* Longest char representation (TAB) + slop */
/* Definitions for screen structures */
struct scr_line {
chroff sl_boff; /* Ptr to start of line's text in buffer */
int sl_len; /* # buffer chars in line (incl NL) */
char *sl_line; /* Ptr to screen image of line */
int sl_col; /* # chars in image == # columns used */
char sl_flg; /* Flags - set if this line modified */
char sl_cont; /* If line being continued on next, this */
/* contains 1 plus # extra chars (if any) */
/* stored at end of this line which shd be */
/* put at beg of next line. */
char *sl_nlin; /* New screen image line if modified flag set */
int sl_ncol;
};
/* sl_flg definitions */
#define SL_MOD 01 /* New line exists, must update to it */
#define SL_EOL 02 /* Buffer line ends with EOL */
#define SL_CSO 04 /* Current screen line is in standout mode */
#define SL_NSO 010 /* New screen line is in standout mode */
#if IMAGEN
#define SL_REDO 0100 /* Line should be redone completely */
#endif /*IMAGEN*/
extern struct scr_line *scr[]; /* Screen line ptrs (allocated in e_vinit) */
/* Buffer stuff */
struct buffer
{ SBBUF b_sb; /* MUST be 1st thing! */
struct buffer *b_next; /* ptr to next in chain */
char *b_name; /* text name */
char *b_fn; /* filename */
chroff b_dot; /* point (dot) */
int b_flags; /* misc. bits */
struct majmode *b_mode; /* Mode of buffer */
#if IMAGEN
long b_mtime; /* Last file modification time */
#endif /*IMAGEN*/
};
/* b_flags definitions */
#define B_MODIFIED 01 /* Buffer is modified */
#define B_EOLCRLF 0200 /* On = CRLF mode, off = LF mode */
#if IMAGEN
#define B_PERMANENT 002 /* buffer cannot be killed */
#define B_CMODE 004 /* "C" mode (HACK HACK) */
#define B_BACKEDUP 010 /* Buffer has been backed up once */
#define B_TEXTMODE 020 /* Text mode (auto-wrap, basically) */
#define B_QUERYREP 040 /* Query-replace mode (qualifier) */
#endif /*IMAGEN*/
/* Handy macro to check EOL mode */
#define eolcrlf(buf) (((struct buffer *)buf)->b_flags&B_EOLCRLF)
/* Buffer pointers */
EXT struct buffer
*buf_head, /* head of list of all buffers */
*cur_buf, /* buffer we are editing now */
*last_buf, /* buffer we were editing before */
*lines_buf; /* buffer for sep_win */
/* Window stuff */
struct window
{ struct window *w_next; /* ptr to next in chain */
int w_flags; /* Window flags */
int w_pos; /* index of top line */
int w_ht; /* number of lines */
struct buffer *w_buf; /* buffer in this window */
int w_pct; /* % of buffer window is at */
int w_redp; /* Redisplay hints */
chroff w_topldot; /* line currently at top of window */
chroff w_dot; /* Saved dot while not cur_win */
chroff w_bmod; /* Lower bound of modified text */
chroff w_emod; /* Upper bound of modified text */
/* (offset from end of buffer!) */
chroff w_oldz; /* Buffer len as of last update */
};
/* Window flags */
#define W_STANDOUT 01 /* Use terminal's standout mode for window */
#define W_MODE 02 /* This is a mode window */
/* Window pointers */
EXT struct window
*win_head, /* head of list of all windows */
*cur_win, /* window we are now in */
*user_win, /* current user window */
*oth_win, /* "other" user window */
*mode_win, /* window for mode line */
*ask_win, /* window for ask (echo) area */
*sep_win; /* window for separation dashes */
/* Major Mode stuff. Each buffer has its own major mode.
* Only one major mode may be in effect at any time.
*/
struct majmode {
char *mjm_name; /* Simple for now */
};
EXT struct majmode *fun_mode; /* Fundamental mode - the default */
EXT struct majmode *cur_mode; /* Current major mode */
/* Minor modes are currently implemented by means of flag variables
* which have global effects (regardless of buffer or major mode).
* Each variable has the name "x_mode" where x is the name of the minor
* mode. These are declared in the modules containing their support code.
* In the future this may be generalized along the lines of major modes.
*/
/* Miscellaneous debug stuff */
EXT int dbgval; /* Set nonzero to do verify stuff */
EXT int dbg_isw; /* Set to enable interrupts if possible */
#if IMAGEN
EXT int dbg_redp; /* Set to debug redisplay algorithms */
#endif /*IMAGEN*/
extern int errno;
/* V7 routines for setexit/reset emulation */
#if !(V6)
#include <setjmp.h>
EXT jmp_buf env_main;
#define setexit(a) setjmp(env_main)
#define reset(a) longjmp(env_main,a)
#endif /*-V6*/
/* Declare functions returning CHROFF values (offsets into a buffer) */
extern chroff e_dot(),e_nldot(),e_pldot(),e_boldot(),e_eoldot(),
e_alldot(),ex_boldot(),ex_alldot(),
ex_blen(),e_blen(),ex_dot(),e_wdot();
extern SBSTR *e_copyn();
/* Some other commonly needed declarations */
extern char *memalloc(), *ask(), *dottoa(), *strdup();
#if !(V6)
extern char *getenv();
#endif /*-V6*/
#include "eeproto.h" /* function prototypes */
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