/* * This file is the general header file for all parts of the MicroEMACS * display editor. It contains definitions used by everyone, and it contains * the stuff you have to edit to create a version of the editor for a specific * operating system and terminal. */ /* * Defines commented out below are unnecessary, since they are * predefined by the system. */ #define AMIGA 1 /* AmigaDOS, Lattice */ #define ST520 0 /* ST520, TOS */ #define MWC86 0 #define V7 0 /* V7 UN*X or Coherent */ #define VMS 0 /* VAX/VMS */ #define CPM 0 /* CP/M-86 */ #define ANSI 1 #define VT52 0 /* VT52 terminal (Zenith). */ #define VT100 0 /* Handle VT100 style keypad. */ #define LK201 0 /* Handle LK201 style keypad. */ #define RAINBOW 0 /* Use Rainbow fast video. */ #define TERMCAP 0 /* Use TERMCAP */ #define CVMVAS 1 /* C-V, M-V arg. in screens. */ #define NFILEN 80 /* # of bytes, file name */ #define NBUFN 24 /* # of bytes, buffer name */ #define NLINE 256 /* # of bytes, line */ #define NKBDM a the * number of bytes in the line (the "used" size), the size of the text array, * and the text. The end of line is not stored as a byte; it's implied. Future * additions will include update hints, and a list of marks into the line. */ typedef struct LINE { struct LINE *l_fp; /* Link to the next line */ struct LINE *l_bp; /* Link to the previous line */ short l_size; /* Allocated size */ short l_used; /* Used size */ char l_text[1]; /* A bunch of characters. */ } LINE; #define lforw(lp) ((lp)->l_fp) #define lback(lp) ((lp)->l_bp) #define lgetc(lp, n) ((lp)->l_text[(n)]&0xFF) #define lputc(lp, n, c) ((lp)->l_text[(n)]=(c)) #define llength(lp) ((lp)->l_used) /* * The editor communicates with the display using a high level interface. A * "TERM" structure holds useful variables, and indirect pointers to routines * that do useful operations. The low level get and put routines are here too. * This lets a terminal, in addition to having non standard commands, have * funny get and put character code too. The calls might get changed to * "termp->t_field" style in the future, to make it possible to run more than * one terminal type. */ typedef struct { short t_nrow; /* Number of rows. */ short t_ncol; /* Number of columns. */ int (*t_open)(); /* Open terminal at the start. */ int (*t_close)(); /* Close terminal at end. */ int (*t_getchar)(); /* Get character from keyboard. */ int (*t_putchar)(); /* Put character to display. */ int (*t_flush)(); /* Flush output buffers. */ int (*t_move)(); /* Move the cursor, origin 0. */ int (*t_eeol)(); /* Erase to end of line. */ int (*t_eeop)(); /* Erase to end of page. */ int (*t_beep)(); /* Beep. */ } TERM; extern int fillcol; /* Fill column */ extern int wordwrap; /* Word wrap flag */ extern int currow; /* Cursor row */ extern int curcol; /* Cursor column */ extern int thisflag; /* Flags, this command */ extern int lastflag; /* Flags, last command */ extern int curgoal; /* Goal for C-P, C-N */ extern int mpresf; /* Stuff in message line */ extern int sgarbf; /* State of screen unknown */ extern WINDOW *curwp; /* Current window */ extern BUFFER *curbp; /* Current buffer */ extern WINDOW *wheadp; /* Head of list of windows */ extern BUFFER *bheadp; /* Head of list of buffers */ extern BUFFER *blistp; /* Buffer for C-X C-B */ extern BUFFER *prev_bp; /* Previous Buffer */ extern short kbdm[]; /* Holds kayboard macro data */ extern short *kbdmip; /* Input pointer for above */ extern short *kbdmop; /* Output pointer for above */ extern char pat[]; /* Search pattern */ extern TERM term; /*(Terminal information. */ extern BUFFER *bfind(); /* Lookup a buffer by name */ extern WINDOW *wpopup(); /* Pop up window creation */ extern LINE *lalloc(); /* Allocate a line */ int (*t_eeol)(); /* Erase to end of line. */ int (*t_eeop)(); /* Erase to end of page. */ int (*t_beep)(); /* Beep. */ } TERM; extern int fillcol; /* Fill column */ extern int wordwrap; /* Word wrap flag */ extern int currow; /* Cursor row */ extern int /* * Window management. Some of the functions are internal, and some are * attached to keys that the user actually types. */ #include #include "ed.h" /* * Reposition dot in the current window to line "n". If the argument is * positive, it is that line. If it is negative it is that line from the * bottom. If it is 0 the window is centered (this is what the standard * redisplay code does). With no argument it defaults to 1. Bound to M-!. * Because of the default, it works like in Gosling. */ reposition(f, n) { curwp->w_force = n; curwp->w_flag |= WFFORCE; return (TRUE); } /* * Refresh the screen. With no argument, it just does the refresh. With an * argument it recenters "." in the current window. Bound to "C-L". */ refresh(f, n) { if (f == FALSE) sgarbf = TRUE; else { curwp->w_force = 0; /* Center dot. */ curwp->w_flag |= WFFORCE; } reta the * number of bytes in the line (the "used" size), the size of the text array, * and the text. The end of line is not stored as a byte; it's implied. Future * additions will include update hints, and a list of marks into the line. */ typedef struct LINE { struct LINE *l_fp; /* Link to the next line */ struct LINE *l_bp; /* Link to the previous line */ short l_size; /* Allocated size */ short l_used; /* Used size */ char l_text[1]; /* A bunch of characters. */ } LINE; #define lforw(lp) ((lp)->l_fp) #define lback(lp) ((lp)->l_bp) #define lgetc(lp, n) ((lp)->l_text[(n)]&0xFF) #define lputc(lp, n, c) ((lp)->l_text[(n)]=(c)) #define llength(lp) ((lp)->l_used) /* * The editor communicates with the display using a high level interface. A * "TERM" structure holds useful variables, and indirect pointers to routines * that do useful operations. The low level get and put routines are here too. * This lets a terminal, in addition to having non standard commands, have * funny get and put character code too. The calls might get changed to * "termp->t_field" style in the future, to make it possible to run more than * one terminal type. */ typedef struct { short t_nrow; /* Number of rows. */ short t_ncol; /* Number of columns. */ int (*t_open)(); /* Open terminal at the start. */ int (*t_close)(); /* Close terminal at end. */ int (*t_getchar)(); /* Get character from keyboard. */ int (*t_putchar)(); /* Put character to display. */ int (*t_flush)(); /* Flush output buffers. */ int (*t_move)(); /* Move the cursor, origin 0. */ int (*t_eeol)(); /* Erase to end of line. */ int (*t_eeop)(); /* Erase to end of page. */ int (*t_beep)(); /* Beep. */ } TERM; extern int fillcol; /* Fill column */ extern int wordwrap; /* Word wrap flag */ extern int currow; /* Cursor row */ extern int curcol; /* Cursor column */ extern int thisflag; /* Flags, this command */ extern int lastflag; /* Flags, last command */ extern int curgoal; /* Goal for C-P, C-N */ extern int mpresf; /* Stuff in message line */ extern int sgarbf; /* State of screen unknown */ extern WINDOW *curwp; /* Current window */ extern BUFFER *curbp; /* Current buffer */ extern WINDOW *wheadp; /* Head of list of windows */ extern BUFFER *bheadp; /* Head of list of buffers */ extern BUFFER *blistp; /* Buffer for C-X C-B */ extern BUFFER *prev_bp; /* Previous Buffer */ extern short kbdm[]; /* Holds kayboard macro data */ extern short *kbdmip; /* Input pointer for above */ extern short *kbdmop; /* Output pointer for above */ extern char pat[]; /* Search pattern */ extern TERM term; /*(Terminal information. */ extern BUFFER *bfind(); /* Lookup a buffer by name */ extern WINDOW *wpopup(); /* Pop up window creation */ extern LINE *lalloc(); /* Allocate a line */