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