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Almathera Ten Pack 3: CDPD 3
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def.h
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C/C++ Source or Header
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1995-03-17
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12KB
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362 lines
/*
* Name: MicroEMACS
* Common header file.
* Version: 29
* Last edit: 14-Feb-86
* By: rex::conroy
* decvax!decwrl!dec-rhea!dec-rex!conroy
*
* This file is the general header file for all parts
* of the MicroEMACS display editor. It contains all of the
* general definitions and macros. It also contains some
* conditional compilation flags. All of the per-system and
* per-terminal definitions are in special header files.
* The most common reason to edit this file would be to zap
* the definition of CVMVAS or BACKUP.
*/
#include "sysdef.h" /* Order is critical. */
#include "ttydef.h"
#include <stdio.h>
/*
* If your system and/or compiler does not support the "void" type
* then define NO_VOID_TYPE in sysdef.h. In the absence of some
* other definition for VOID, the default in that case will be to
* turn it into an int, which works with most compilers that don't
* support void. In the absence of any definition of VOID or
* NO_VOID_TYPE, the default is to assume void is supported, which
* should be the case for most modern C compilers.
*/
#ifndef VOID
#ifdef NO_VOID_TYPE
# define VOID int /* Default for no void is int */
#else
# define VOID void /* Just use normal void */
#endif /* NO_VOID_TYPE */
#endif /* VOID */
#define CVMVAS 1 /* C-V, M-V work in pages. */
#define BACKUP 0 /* Make backup file. */
/*
* Table sizes, etc.
*/
#define NSHASH 31 /* Symbol table hash size. */
#define NFILEN 80 /* Length, file name. */
#define NBUFN 16 /* Length, buffer name. */
#define NLINE 256 /* Length, line. */
#define NKBDM 256 /* Length, keyboard macro. */
#define NMSG 512 /* Length, message buffer. */
#define NPAT 80 /* Length, pattern. */
#define HUGE 1000 /* A rather large number. */
#define NSRCH 128 /* Undoable search commands. */
#define NXNAME 64 /* Length, extended command. */
/*
* Universal.
*/
#define FALSE 0 /* False, no, bad, etc. */
#define TRUE 1 /* True, yes, good, etc. */
#define ABORT 2 /* Death, ^G, abort, etc. */
/*
* These flag bits keep track of
* some aspects of the last command. The CFCPCN
* flag controls goal column setting. The CFKILL
* flag controls the clearing versus appending
* of data in the kill buffer.
*/
#define CFCPCN 0x0001 /* Last command was C-P, C-N */
#define CFKILL 0x0002 /* Last command was a kill */
/*
* File I/O.
*/
#define FIOSUC 0 /* Success. */
#define FIOFNF 1 /* File not found. */
#define FIOEOF 2 /* End of file. */
#define FIOERR 3 /* Error. */
/*
* Directory I/O.
*/
#define DIOSUC 0 /* Success. */
#define DIOEOF 1 /* End of file. */
#define DIOERR 2 /* Error. */
/*
* Display colors.
*/
#define CNONE 0 /* Unknown color. */
#define CTEXT 1 /* Text color. */
#define CMODE 2 /* Mode line color. */
/*
* Flags for "eread".
*/
#define EFNEW 0x0001 /* New prompt. */
#define EFAUTO 0x0002 /* Autocompletion enabled. */
#define EFCR 0x0004 /* Echo CR at end; last read. */
/*
* Keys are represented inside using an 11 bit
* keyboard code. The transformation between the keys on
* the keyboard and 11 bit code is done by terminal specific
* code in the "kbd.c" file. The actual character is stored
* in 8 bits (DEC multinationals work); there is also a control
* flag KCTRL, a meta flag KMETA, and a control-X flag KCTLX.
* ASCII control characters are always represented using the
* KCTRL form. Although the C0 control set is free, it is
* reserved for C0 controls because it makes the communication
* between "getkey" and "getkbd" easier. The funny keys get
* mapped into the C1 control area.
*/
#define NKEYS 2048 /* 11 bit code. */
#define METACH 0x1B /* M- prefix, Control-[, ESC */
#define CTMECH 0x1C /* C-M- prefix, Control-\ */
#define EXITCH 0x1D /* Exit level, Control-] */
#define CTRLCH 0x1E /* C- prefix, Control-^ */
#define HELPCH 0x1F /* Help key, Control-_ */
#define KCHAR 0x00FF /* The basic character code. */
#define KCTRL 0x0100 /* Control flag. */
#define KMETA 0x0200 /* Meta flag. */
#define KCTLX 0x0400 /* Control-X flag. */
#define KFIRST 0x0080 /* First special. */
#define KLAST 0x009F /* Last special. */
#define KRANDOM 0x0080 /* A "no key" code. */
#define K01 0x0081 /* Use these names to define */
#define K02 0x0082 /* the special keys on your */
#define K03 0x0083 /* terminal. */
#define K04 0x0084
#define K05 0x0085
#define K06 0x0086
#define K07 0x0087
#define K08 0x0088
#define K09 0x0089
#define K0A 0x008A
#define K0B 0x008B
#define K0C 0x008C
#define K0D 0x008D
#define K0E 0x008E
#define K0F 0x008F
#define K10 0x0090
#define K11 0x0091
#define K12 0x0092
#define K13 0x0093
#define K14 0x0094
#define K15 0x0095
#define K16 0x0096
#define K17 0x0097
#define K18 0x0098
#define K19 0x0099
#define K1A 0x009A
#define K1B 0x009B
#define K1C 0x009C
#define K1D 0x009D
#define K1E 0x009E
#define K1F 0x009F
/*
* These flags, and the macros below them,
* make up a do-it-yourself set of "ctype" macros that
* understand the DEC multinational set, and let me ask
* a slightly different set of questions.
*/
#define _W 0x01 /* Word. */
#define _U 0x02 /* Upper case letter. */
#define _L 0x04 /* Lower case letter. */
#define _C 0x08 /* Control. */
#define ISWORD(c) ((cinfo[(c)]&_W)!=0)
#define ISCTRL(c) ((cinfo[(c)]&_C)!=0)
#define ISUPPER(c) ((cinfo[(c)]&_U)!=0)
#define ISLOWER(c) ((cinfo[(c)]&_L)!=0)
#define TOUPPER(c) ((c)-0x20)
#define TOLOWER(c) ((c)+0x20)
/*
* The symbol table links editing functions
* to names. Entries in the key map point at the symbol
* table entry. A reference count is kept, but it is
* probably next to useless right now. The old type code,
* which was not being used and probably not right
* anyway, is all gone.
*/
typedef struct SYMBOL {
struct SYMBOL *s_symp; /* Hash chain. */
short s_nkey; /* Count of keys bound here. */
char *s_name; /* Name. */
int (*s_funcp)(); /* Function. */
} SYMBOL;
/*
* There is a window structure allocated for
* every active display window. The windows are kept in a
* big list, in top to bottom screen order, with the listhead at
* "wheadp". Each window contains its own values of dot and mark.
* The flag field contains some bits that are set by commands
* to guide redisplay; although this is a bit of a compromise in
* terms of decoupling, the full blown redisplay is just too
* expensive to run for every input character.
*/
typedef struct WINDOW {
struct WINDOW *w_wndp; /* Next window */
struct BUFFER *w_bufp; /* Buffer displayed in window */
struct LINE *w_linep; /* Top line in the window */
struct LINE *w_dotp; /* Line containing "." */
short w_doto; /* Byte offset for "." */
struct LINE *w_markp; /* Line containing "mark" */
short w_marko; /* Byte offset for "mark" */
char w_toprow; /* Origin 0 top row of window */
char w_ntrows; /* # of rows of text in window */
char w_force; /* If NZ, forcing row. */
char w_flag; /* Flags. */
} WINDOW;
/*
* Window flags are set by command processors to
* tell the display system what has happened to the buffer
* mapped by the window. Setting "WFHARD" is always a safe thing
* to do, but it may do more work than is necessary. Always try
* to set the simplest action that achieves the required update.
* Because commands set bits in the "w_flag", update will see
* all change flags, and do the most general one.
*/
#define WFFORCE 0x01 /* Force reframe. */
#define WFMOVE 0x02 /* Movement from line to line. */
#define WFEDIT 0x04 /* Editing within a line. */
#define WFHARD 0x08 /* Better to a full display. */
#define WFMODE 0x10 /* Update mode line. */
/*
* Text is kept in buffers. A buffer header, described
* below, exists for every buffer in the system. The buffers are
* kept in a big list, so that commands that search for a buffer by
* name can find the buffer header. There is a safe store for the
* dot and mark in the header, but this is only valid if the buffer
* is not being displayed (that is, if "b_nwnd" is 0). The text for
* the buffer is kept in a circularly linked list of lines, with
* a pointer to the header line in "b_linep".
*/
typedef struct BUFFER {
struct BUFFER *b_bufp; /* Link to next BUFFER */
struct LINE *b_dotp; /* Link to "." LINE structure */
short b_doto; /* Offset of "." in above LINE */
struct LINE *b_markp; /* The same as the above two, */
short b_marko; /* but for the "mark" */
struct LINE *b_linep; /* Link to the header LINE */
char b_nwnd; /* Count of windows on buffer */
char b_flag; /* Flags */
char b_fname[NFILEN]; /* File name */
char b_bname[NBUFN]; /* Buffer name */
} BUFFER;
#define BFCHG 0x01 /* Changed. */
#define BFBAK 0x02 /* Need to make a backup. */
/*
* This structure holds the starting position
* (as a line/offset pair) and the number of characters in a
* region of a buffer. This makes passing the specification
* of a region around a little bit easier.
* There have been some complaints that the short in this
* structure is wrong; that a long would be more appropriate.
* I'll awat more comments from the folks with the little
* machines; I have a VAX, and everything fits.
*/
typedef struct {
struct LINE *r_linep; /* Origin LINE address. */
short r_offset; /* Origin LINE offset. */
short r_size; /* Length in characters. */
} REGION;
/*
* All text is kept in circularly linked
* lists of "LINE" structures. These begin at the
* header line (which is the blank line beyond the
* end of the buffer). This line is pointed to by
* the "BUFFER". Each line contains 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 */
#if PCC
char l_text[1]; /* A bunch of characters. */
#else
char l_text[]; /* A bunch of characters. */
#endif
} LINE;
/*
* The rationale behind these macros is that you
* could (with some editing, like changing the type of a line
* link from a "LINE *" to a "REFLINE", and fixing the commands
* like file reading that break the rules) change the actual
* storage representation of lines to use something fancy on
* machines with small address spaces.
*/
#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)
/*
* Externals.
*/
extern int thisflag;
extern int lastflag;
extern int curgoal;
extern int epresf;
extern int sgarbf;
extern WINDOW *curwp;
extern BUFFER *curbp;
extern WINDOW *wheadp;
extern BUFFER *bheadp;
extern BUFFER *blistp;
extern short kbdm[];
extern short *kbdmip;
extern short *kbdmop;
extern char pat[];
extern SYMBOL *symbol[];
extern SYMBOL *binding[];
extern BUFFER *bfind();
extern BUFFER *bcreate();
extern WINDOW *wpopup();
extern LINE *lalloc();
extern int nrow;
extern int ncol;
extern char *version[];
extern int ttrow;
extern int ttcol;
extern int tceeol;
extern int tcinsl;
extern int tcdell;
extern char cinfo[];
extern char *keystrings[];
extern SYMBOL *symlookup();
extern int nmsg;
extern int curmsgf;
extern int newmsgf;
extern char msg[];
/*
* Standard I/O.
*/
extern char *malloc();
extern char *strcpy();
extern char *strcat();