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/*
** extern.h
**
** external data definitions
** for the screen editor
**
** This file is part of mse, under GPLv3.
*/
#ifndef __EXTERN_H
#define __EXTERN_H
/* Concerning line numbers: */
extern int Line1; /* first line number on command */
extern int Line2; /* second line number on command */
extern int Nlines; /* number of line numbers specified */
extern int Curln; /* current line; value of dot */
extern int Lastln; /* last line; value of dollar */
/* Concerning patterns: */
extern char Pat[MAXPAT]; /* saved pattern */
/* Concerning the text of lines: */
extern char Txt[MAXLINE]; /* text of current line */
/* Concerning file names: */
extern char Savfil[MAXLINE]; /* remembered file name */
/* Concerning line descriptors: */
extern LINEDESC Buf[MAXBUF];
extern LINEDESC *Line0; /* head of list of line descriptors */
/* Concerning the 'undo' command: */
extern LINEDESC *Limbo; /* head of limbo list for undo */
extern int Limcnt; /* number of lines in limbo list */
/* Concerning the scratch file: */
extern int Scr; /* scratch file descriptor */
extern unsigned Scrend; /* end of info on scratch file */
extern char Scrname[MAXLINE]; /* name of scratch file */
extern int Lost_lines; /* number of garbage lines in scratch file */
/* Concerning miscellaneous variables */
extern int Buffer_changed; /* YES if buffer changed since last write */
extern int Errcode; /* cause of most recent error */
extern int Saverrcode; /* cause of previous error */
extern int Probation; /* YES if unsaved buffer can be destroyed */
extern int Argno; /* command line argument pointer */
extern char Last_char_scanned; /* last char scanned with ctl-s or -l */
extern char Peekc; /* push a SKIP_RIGHT if adding delimiters */
extern int Reading; /* are we doing terminal input? */
/* Concerning options: */
extern int Tabstops[MAXLINE]; /* array of tab stops */
extern char Unprintable; /* char to print for unprintable chars */
extern int Absnos; /* use absolute numbers in margin */
extern int Nchoise; /* choice of line number for cont. display */
extern int Overlay_col; /* initial cursor column for 'v' command */
extern int Warncol; /* where to turn on column warning */
extern int Firstcol; /* leftmost column to display */
extern int Indent; /* indent col; 0=same as previous line */
extern int Globals; /* substitutes in a global don't fail */
extern int No_hardware; /* never use hardware insert/delete */
/* Concerning the screen format: */
extern char Screen_image[MAXROWS][MAXCOLS];
extern char Msgalloc[MAXCOLS]; /* column allocation of status line */
extern int Nrows; /* number of rows on screen */
extern int Ncols; /* number of columns on screen */
extern int Currow; /* vertical cursor coordinate */
extern int Curcol; /* horizontal cursor coordinate */
extern int Toprow; /* top row of window field on screen */
extern int Botrow; /* bottom row of window field on screen */
extern int Cmdrow; /* row number of command line */
extern int Topln; /* line number of first line on screen */
extern int Insert_mode; /* flag to specify character insertion */
extern int Invert_case; /* flag to specify case mapping on input */
extern int First_affected; /* number of first line affected by cmd */
extern int Rel_a; /* char to use for first alpha line number */
extern int Rel_z; /* char to use for last alpha line number */
extern int Scline[MAXROWS]; /* lines currently on screen (rel to Sctop) */
extern int Sctop; /* first line currently on screen */
extern int Sclen; /* number of lines currently on screen */
extern char Blanks[MAXCOLS]; /* all blanks for filling in lines on screen */
extern char Tobuf[MAXTOBUF]; /* buffer for collecting terminal output */
extern char *Tobp; /* pointer to last used part of Tobuf */
/* Concerning interrupts: */
extern int Int_caught; /* caught a SIGINT from user */
extern int Hup_caught; /* caught a SIGHUP when phone line dropped */
extern int Catching_stops; /* catching or ignoring SIGTSTP's? */
/* Concerning file encryption: */
extern int Crypting; /* doing file encryption? */
extern char Key[KEYSIZE]; /* encryption key */
#endif