Source Code 1992 March

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C/C++ Source or Header | 1991-06-07 | 19.6 KB | 491 lines

/* * Common header file. * * This file is the general header file for all parts * of the 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. */ #define LINT_ARGS 1 /* enable lint type checking */ #include "stdio.h" #define BACKUP 1 /* Make backup file. */ #define RUNCHK 1 /* Do additional checking at run time */ #ifndef uchar #define uchar unsigned char #endif #ifndef uint #define uint unsigned int #endif #ifndef ushort #define ushort unsigned short #endif #ifndef ulong #define ulong unsigned long #endif /* these defines are reserved for handling data values from the buffer */ #define D8 uchar /* this had better be a 8 bit quantity */ #define D16 ushort /* this had better be a 16 bit quantity */ #define D32 ulong /* this had better be a 32 bit quantity */ /* this define is reserved for the address of a location in the buffer */ #define A32 long /* this is a 32 bit address into the buffer */ #define bool char /* used for boolean values */ #define bits char /* used for boolean bit flags */ /* * MS-DOS system header file. */ #if MSDOS #define LARGE 1 /* Large model. */ #endif #define PCC 1 /* "[]" won't work. */ #define GOOD 0 /* Indicate hunkydoryhood */ /* * Macros used by the buffer name making code. * Start at the end of the file name, scan to the left * until BDC1 (or BDC2, if defined) is reached. The buffer * name starts just to the right of that location, and * stops at end of string (or at the next BDC3 character, * if defined). BDC2 and BDC3 are mainly for VMS. */ #define BDC1 ':' /* Buffer names. */ #define BDC2 '/' /* Buffer names. jam */ #ifdef UNIX #define PATHCHR ':' #define SEPCHAR '/' #else #define PATHCHR ';' #define SEPCHAR 0x5c /* this is a \ char */ #endif /* * Digital ANSI terminal header file */ #define GOSLING 0 /* Compile in fancy display. */ #ifdef MSDOS #define ANSI 1 /* send ANSI escape codes */ #endif #define NROW 25 /* Rows.for boot */ #define NCOL 80 /* Columns. */ #define CUSTOMIZE /* compile switch for extended key binding in extend.c */ #define COSMETIC /* cosmetic screen stuff on insert off screen */ #ifdef MSDOS #define WANG_CHARACTER_SCREEN 0xf0000000L #endif /* * Table sizes, etc. */ #define NSHASH 31 /* Symbol table hash size. */ #define NFILEN 80 /* Length, file name. */ #define NBUFN 13 /* Length, buffer name. */ #define NFILE 12 /* Length, file name. */ /* krw */ #define NLINE 80 /* Length, line. pvr */ #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. */ #define NBLOCK 16 /* Line block chunk size */ #define MAXPOS 0x7FFFFFFF /* Maximum positive long value */ /* * 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 CFKILL flag controls the clearing versus appending * of data in the kill buffer. */ #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. fitz */ #define KLAST 0x00F3 /* Last special. */ #define KRANDOM 0x0080 /* A "no key" code. */ /* * This causes the key sequence ESC [ <key> to be delevered as * KCTRL | KMETA | KCTLX | <key>. This allows VT100 function keys * to be bound. */ #define VT100KEY /* * These define the column used in the help (wallchart) function */ #define HFUNCCOL 3 #define HKEY 32 #define HKEYCODE 50 #define HENDCOL 55 /* * 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 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) #define BUF_SIZE(wp) (wp -> w_bufp -> b_linep -> l_bp -> l_file_offset + \ wp -> w_bufp -> b_linep -> l_bp -> l_used) #define BUF_START(wp) (wp -> w_bufp -> b_linep -> l_fp -> l_file_offset) #define DOT_POS(wp) (wp -> w_dotp -> l_file_offset + wp -> w_doto) #define MARK_POS(wp) (wp -> w_markp -> l_file_offset + wp -> w_marko) #define DOT_CHAR(wp) (wp -> w_dotp -> l_text[wp -> w_doto]) #define WIND_POS(wp) (wp -> w_linep -> l_file_offset + wp -> w_loff) #define R_TYPE(wp) (wp -> w_fmt_ptr -> r_type) #define R_SIZE(wp) (wp -> w_fmt_ptr -> r_size) #define R_UNITS(wp) (wp -> w_fmt_ptr -> r_units) #define R_BYTES(wp) (wp -> w_fmt_ptr -> r_bytes) #define R_ALIGN(wp) (wp -> w_fmt_ptr -> r_align) #define R_B_PER_U(wp) (wp -> w_fmt_ptr -> r_b_per_u) #define R_CHR_PER_U(wp) (wp -> w_fmt_ptr -> r_chr_per_u) #define R_FLAGS(wp) (wp -> w_fmt_ptr -> r_flags) #define R_UNIT_FMT(wp) (wp -> w_fmt_ptr -> r_unit_fmt) #define R_POS_FMT(wp) (wp -> w_fmt_ptr -> r_pos_fmt) #define R_BYTE_FMT(wp) (wp -> w_fmt_ptr -> r_byte_fmt) #define R_POSITIONS(wp) (wp -> w_fmt_ptr -> r_positions) /* * 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. */ bits s_modify; /* modify bit */ } SYMBOL; /* * These are the legal values for 's_modify' and 'k_modify' */ #define SMOD 0x01 /* command modifies the buffer */ #define SSIZE 0x02 /* command changes buffer size */ #define SSRCH 0x04 /* command valid in search */ #define SRPLC 0x08 /* command valid in replace */ #define SBOUND 0x10 /* key was bound bu user or rc file */ /* * 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 */ int w_loff; /* Offset into line for start pvr */ struct LINE *w_dotp; /* Line containing "." */ int w_doto; /* Offset into line for "." */ struct LINE *w_markp; /* Line containing "mark" */ int w_marko; /* Byte offset for "mark" */ char w_unit_offset; /* Byte offset for "." into unit pvr */ char w_toprow; /* Origin 0 top row of window */ char w_ntrows; /* # of rows of text in window */ bits w_flag; /* Flags. */ char w_disp_shift; /* Display byte shift; 0-3 pvr */ bool w_intel_mode; /* Display byte swaped. pvr */ struct ROW_FMT *w_fmt_ptr; /* Pointer to display format pvr */ } 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. */ /* * This structure contains how a row is constructed. pvr */ typedef struct ROW_FMT { uchar r_type; /* format type nibbles */ uchar r_size; /* format size: must be 0,1,3,7,15, etc */ uchar r_units; /* number of units per window row: must be 1,2,4,8,16*/ uchar r_bytes; /* number of bytes per window row: must be 1,2,4,8,16*/ uchar r_align; /* number of bytes per align row: must be 1,2,4,8,16*/ uchar r_b_per_u; /* number of bytes per unit: must be 1,2,4,8,16 */ uchar r_chr_per_u; /* displayed chars per unit */ bits r_flags; /* flags controlling format */ char *r_unit_fmt; /* print format for unit */ char *r_pos_fmt; /* print format for buffer position, always a long */ char *r_byte_fmt; /* print format for bytes */ uchar *r_positions; /* list of unit positions */ struct ROW_FMT *r_srch_fmt; /* pointer to search display format */ } ROW_FMT; /* legal values for 'r_size' (values significant; used as bit mask) pvr */ #define BYTES 0x00 /* Display as byte; 8 bits */ #define WORDS 0x01 /* Display as word; 16 bits */ #define DWORDS 0x03 /* Display as doubles; 32 bits */ /* legal values for 'r_type' pvr */ #define ASCII 0x10 /* Display as ascii */ #define OCTAL 0x20 /* Display as octal values */ #define DECIMAL 0x30 /* Display as decimal values */ #define HEX 0x40 /* Display as hex values */ #define BINARY 0x50 /* Display as binary values */ #define EBCDIC 0x60 /* Display as ebcdic */ #define TEXT 0x70 /* Display as normal text */ /* * 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 { bits buf_type; /* Type of buffer */ struct BUFFER *b_bufp; /* Link to next BUFFER */ struct LINE *b_dotp; /* Link to "." LINE structure */ int b_doto; /* Offset of "." in above LINE */ char b_unit_offset; /* Offset into unit for "." pvr */ struct LINE *b_markp; /* The same as the above two, */ int b_marko; /* but for the "mark" */ struct LINE *b_linep; /* Link to the header LINE */ char b_nwnd; /* Count of windows on buffer */ bits b_flag; /* Flags */ A32 b_begin_addr; /* File address of begining of buffer */ A32 b_end_addr; /* File address of end of buffer */ A32 b_file_size; /* Size of file */ char b_fname[NFILEN]; /* File name */ char b_bname[NBUFN]; /* Buffer name */ } BUFFER; /* Values for 'buf_type' */ #define BFILE 0x00 /* Buffer contains a file */ #define BDISK 0x01 /* Buffer points to a disk */ #define BMEMORY 0x02 /* Buffer points to memory */ #define INMEM 0x04 /* File is entirely in memory */ /* Values for 'b_flag' */ #define BFCHG 0x01 /* Changed. */ #define BFBAK 0x02 /* Need to make a backup. */ #define BFBAD 0x04 /* may be trashed alloc error? */ #define BFSAV 0x08 /* saved buffer from save-region */ #define BFNWL 0x10 /* append newline to this buffer */ #define BFVIEW 0x20 /* read only (jam) */ #define BFLINK 0x40 /* Linked mode pvr */ #define BFSLOCK 0x80 /* Lock buffer size pvr */ /* * 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 await more comments from the folks with the little * machines; I have a VAX, and everything fits. */ typedef struct reg { struct LINE *r_linep; /* Origin LINE address. */ int r_offset; /* Origin LINE offset. */ int 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 */ A32 l_file_offset; /* Offset from begining of file pvr */ int l_size; /* Allocated size */ int 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 SYMBOL *symlookup(); extern int nmsg; extern int curmsgf; extern int newmsgf; extern char msg[]; /* jam */ extern char *okmsg; extern int insert_mode; extern int extend_buf; extern int flush_num; extern int auto_update; extern int flush_count; extern int rowb; extern char file_off_bad; /* * Standard I/O. */ extern char *malloc(); extern char *strcpy(); extern char *strcat();