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C/C++ Source or Header | 1992-03-14 | 31.4 KB | 1,011 lines

/* ESTRUCT: Structure and preprocesser defined for MicroEMACS 3.11 written by Daniel Lawrence based on code by Dave G. Conroy, Steve Wilhite and George Jones */ #ifdef LATTICE #undef LATTICE /* don't use their definitions...use ours */ #endif #ifdef MSDOS #undef MSDOS #endif #ifdef AMIGA #undef AMIGA #endif #ifdef EGA #undef EGA #endif #ifdef CTRLZ #undef CTRLZ #endif /* Program Identification..... PROGNAME should always be MicroEMACS for a distribution unmodified version. People using MicroEMACS as a shell for other products should change this to reflect their product. Macros can query this via the $progname variable */ #define PROGNAME "MicroEMACS" #define VERSION "3.11c" /* Machine/OS definitions */ /* [Set one of these!!] */ #define AMIGA 0 /* AmigaDOS */ #define AOSVS 0 /* Data General AOS/VS */ #define AVIION 0 /* Data General AViiON */ #define BSD 0 /* UNIX BSD 4.2 and ULTRIX */ #define FINDER 0 /* Macintosh OS */ #define HPUX 0 /* HPUX HP 9000 minicomputer */ #define MPE 0 /* HP MPE/XL */ #define MSDOS 1 /* MS-DOS */ #define OS2 0 /* Microsoft or IBM OS/2 */ #define SMOS 0 /* Supermax UNIX System V */ #define SUN 0 /* SUN v4.0 */ #define TOS 0 /* ST520, TOS */ #define USG 0 /* UNIX system V */ #define V7 0 /* V7 UNIX or Coherent or BSD4.2*/ #define VMS 0 /* VAX/VMS */ #define WMCS 0 /* Wicat's MCS */ #define XENIX 0 /* IBM-PC SCO XENIX */ /* Compiler definitions */ /* [Set one of these!!] */ #define ALCYON 0 /* ALCYON Atari ST compiler */ #define DGC 0 /* Data General AOS/VS C... */ #define AZTEC 0 /* Aztec C 3.20e */ #define DTL 0 /* DataLight C v3.12 */ #define GCC 0 /* the GNU C compiler */ #define LATTICE 0 /* Lattice 2.14 through 3.0 compilers */ #define MSC 0 /* MicroSoft C compile version 3 & 4 & 5.1 & 6 */ #define MWC 0 /* Mark Williams C */ #define TURBO 1 /* Turbo C/MSDOS */ #define UNIX 0 /* a standard UNIX compiler (cc) */ #define ZTC 0 /* Zortech C/C++ 1.02 thru 2.10 under MSDOS */ /* Machine stack growth direction. */ /* [Set this to 1 if your machine stack grows UP!!!] */ /* data general mv/eclipse series stack grows up. */ /* dec vax series stack grows down... got it??? */ #define STACK_GROWS_UP 0 /* Debugging options */ #define RAMSIZE 0 /* dynamic RAM memory usage tracking */ #define RAMSHOW 0 /* auto dynamic RAM reporting */ #define RAMTRCK 0 /* send debug info to MALLOC.DAT */ /* Special keyboard/network definitions */ #define ATKBD 0 /* AT-style keyboard with F11, F12 & grey keys */ #define WANGPC 0 /* WangPC - mostly escape sequences */ #define VT100 0 /* Handle VT100 style keypad - NOT VMS. */ #define NOVELL 0 /* IBMPC Novell NetWare flag! */ #define KEYPAD 0 /* VMS - turn on and off application */ /* keypad automatically */ #define XONDATA 0 /* VMS - set to force /NOTTSYNC/NOHOSTSY */ #define RMSIO 0 /* VMS - skip the rotten C runtime and */ /* use RMS directly */ #define OPTMEM 0 /* VMS 5.0 and up - use a less standard */ /* but more efficient memory allocator */ /* Terminal Output definitions */ /* [Set one of these!!] */ #define ANSI 0 /* ANSI escape sequences */ #define DASHER 0 /* DG Dasher 2xx/4xx crts */ #define DG10 0 /* Data General system/10 */ #define FMR 0 /* Fujitsu FMR series driver */ #define HP110 0 /* HP110 screen driver */ #define HP150 0 /* HP150 screen driver */ #define I55 0 /* IBM PS55 DOS J4.0/V */ #define IBMPC 0 /* IBM-PC CGA/MONO/EGA/VGA drvr */ #define MAC 0 /* Macintosh */ #define NEC 0 /* NEC-9801VM driver */ #define OS2NPM 0 /* OS/2 non-Presentation Mgr. */ #define RAINBOW 0 /* Use Rainbow fast video. */ #define SMG 0 /* SMG library on VMS */ #define ST52 0 /* Atari 520/1040ST screen */ #define TERMCAP 0 /* Use TERMCAP */ #define TIPC 0 /* TI Profesional PC driver */ #define VT52 0 /* VT52 terminal (Zenith). */ #define Z309 0 /* Zenith 100 PC family driver */ /* Windowing system style (pick one) */ #define WINDOW_TEXT 0 /* Text mode.... simple updates */ #define WINDOW_XVT 0 /* using XVT/any platform */ #define WINDOW_MSWIN 1 /* MicroSoft Windows */ #define WINDOW_X 0 /* X/Unix */ /* Language text options (pick one) */ #define ENGLISH 1 #define FRENCH 0 #define SPANISH 0 #define GERMAN 0 #define DUTCH 0 #define PLATIN 0 #define JAPAN 0 #define LATIN 0 /* Configuration options */ #define TYPEAH 0 /* type ahead causes update to be skipped */ #define DEBUGM 1 /* $debug triggers macro debugging */ #define LOGFLG 0 /* send all executed commands to EMACS.LOG */ #define VISMAC 0 /* update display during keyboard macros */ #define CTRLZ 0 /* add a ^Z at end of files under MSDOS only */ #define CLEAN 0 /* de-alloc memory on exit */ #define CALLED 0 /* is emacs a called subroutine? or stand alone */ #define REVSTA 1 /* Status line appears in reverse video */ #define COLOR 1 /* color commands and windows */ #define FILOCK 0 /* file locking under unix BSD 4.2 */ #define ISRCH 1 /* Incremental searches like ITS EMACS */ #define FLABEL 0 /* function key label code [HP150] */ #define CRYPT 1 /* file encryption enabled? */ #define MAGIC 1 /* include regular expression matching? */ #define MOUSE 1 /* Include routines for mouse actions */ #define NOISY 1 /* Use a fancy BELL if it exists */ #define CTAGS 0 /* include vi-like tagging? */ #define SPEECH 0 /* spoken EMACS, for the sight impared [not ready] */ #define VARARG 1 /* use varargs.h for mlwrite() */ /* Character set options */ /* [Set one of these!!] */ #define ASCII 1 /* always using ASCII char sequences for now */ #define EBCDIC 0 /* later IBM mainfraim versions will use EBCDIC */ /* handle constant and voids properly */ #if VMS #define CONST readonly #define VOID void #define NOSHARE noshare #else #if AOSVS #define CONST $shared $align(1) /* fake a const */ #define VOID #define NOSHARE $low32k $align(1) /* attempt to optimize read/write vars. */ #else #if __STDC__ || MSC || TURBO || DTL || GCC || ZTC #define CONST /* const (produces spurious warnings under BC3.0) */ #define VOID void #define NOSHARE #else #define CONST #define VOID #define NOSHARE #endif #endif #endif /* System dependant library redefinitions, structures and includes */ /* the following define allows me to initialize unions... otherwise we make them structures (like the keybinding table) */ /* multibyte character support? */ #if NEC || FMR || I55 #define DBCS 1 /* double byte character sets enabled */ #define INSDEL 1 /* use insert/delete line display optimizations */ /* define DBCS prefix bytes */ #define is2char(ch) (((ch&0xff) >= 0x81 && (ch&0xff) <= 0x9f) || ((ch&0xff) >=0xe0 && (ch&0xff) <= 0xfc)) #else #define DBCS 0 #define INSDEL 0 #endif /* Prototypes in use? */ #if MSC || TURBO || DTL || VMS || GCC || ZTC #define PROTO 1 #else #define PROTO 0 #endif /* Gnu can't for some reason...*/ #if (__STDC__ && (GCC == 0)) || MSC || TURBO || DTL || VMS || GCC || ZTC #define ETYPE union #else #define ETYPE struct #endif #if MSDOS & (TURBO | MSC | TIPC) #define NEAR #define DNEAR #define PASCAL pascal #define CDECL cdecl #else #if MSDOS & ZTC #define NEAR #define DNEAR #define PASCAL _pascal #define CDECL _cdecl #else #define NEAR #define DNEAR #define PASCAL #define CDECL #endif #endif #if WINDOW_MSWIN #undef TYPEAH #define TYPEAH 0 /* typeahead is handled at the term driver level */ #undef CALLED #define CALLED 1 /* under MS Windows, "main" resides in the sys driver */ #if TURBO /* actually Borland C++ 2.0 */ #define EXPORT _export #else #define EXPORT /* other compilers (MS-C for instance) would need a .DEF file to list the exported functions */ #endif #endif #if TURBO #include <dos.h> #include <mem.h> #undef peek #undef poke #define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d) #define poke(a,b,c,d) movedata(FP_SEG(c),FP_OFF(c),a,b,d) #endif #if LATTICE & MSDOS /* you may have to remove this one definition with LATTICE version 3.2 and above */ #define unsigned #endif #if AZTEC #undef putc #undef getc #if MSDOS #define getc a1getc #define int86 sysint #define intdos(a, b) sysint(33, a, b) #define inp inportb #define outp outportb #else #define getc agetc #endif #define putc aputc struct XREG { unsigned ax,bx,cx,dx,si,di,ds,es; }; struct HREG { char al,ah,bl,bh,cl,ch,dl,dh,d1,d2,e1,e2; }; union REGS { struct XREG x; struct HREG h; }; struct SREGS { unsigned cs, ss, ds, es; }; #endif #if MSDOS & DTL #include <dos.h> #endif #if MSDOS & MWC #include <dos.h> #define int86(a, b, c) intcall(b, c, a) #define intdos(a, b) intcall(a, b, DOSINT) #define inp(a) in(a) #define outp(a, b) out(a, b) #define movmem(a, b, c) memcpy(b, a, c) struct XREG { unsigned int ax,bx,cx,dx,si,di,ds,es,flags; }; struct HREG { char al,ah,bl,bh,cl,ch,dl,dh; unsigned int ds,es,flags; }; union REGS { struct XREG x; struct HREG h; }; #endif #if MSDOS & MSC #include <dos.h> #include <memory.h> #define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d) #define poke(a,b,c,d) movedata(FP_SEG(c),FP_OFF(c),a,b,d) #define movmem(a, b, c) memcpy(b, a, c) #endif #if MSDOS & LATTICE #undef CPM #undef LATTICE #include <dos.h> #undef CPM #endif /* System V doesn't name this the same as others */ #if USG | SUN | (OS2 & MSC) #define movmem(a, b, c) memcpy(b, a, c) #endif /* this keeps VMS happy */ #if VMS #define getname xgetname #define unlink(a) delete(a) #endif /* some options for AOS/VS */ #if AOSVS #define ORMDNI 1 #endif /* define some ability flags */ #if IBMPC | Z309 | FMR | TIPC #define MEMMAP 1 #else #define MEMMAP 0 #endif #if MSDOS | OS2 | V7 | USG | SMOS | HPUX | BSD | (TOS & MWC) | WMCS | SUN | MPE #define ENVFUNC 1 #else #define ENVFUNC 0 #endif #if MPE #define DIRSEPSTR "." #define DIRSEPCHAR '.' #else #if TOS || MSDOS || OS2 #define DIRSEPSTR "\\" #define DIRSEPCHAR '\\' #else #define DIRSEPSTR "/" #define DIRSEPCHAR '/' #endif #endif #define DRIVESEPCHAR ':' #if VARARG #if USG || BSD || SUN || XENIX || HPUX || AVIION || MPE #define VARG 1 #define SARG 0 #include <varargs.h> #else #define VARG 0 #define SARG 1 #include <stdarg.h> #endif #endif #if ZTC #include <dos.h> #define movmem(a, b, c) memcpy(b, a, c) #endif /* Emacs global flag bit definitions (for gflags) */ #define GFREAD 1 /* read first file in at startup */ #define GFSDRAW 2 /* suppress a screen redraw */ /* internal constants */ #define NBINDS 300 /* max # of bound keys */ #if AOSVS | VMS #define NFILEN 256 #else #define NFILEN 80 /* # of bytes, file name */ #endif #define NBUFN 32 /* # of bytes, buffer name */ #define NLINE 256 /* # of bytes, input line */ #define NSTRING 128 /* # of bytes, string buffers */ #define NKBDM 256 /* # of strokes, keyboard macro */ #define NPAT 128 /* # of bytes, pattern */ #define HUGE 1000 /* Huge number */ #define NLOCKS 100 /* max # of file locks active */ #define NCOLORS 16 /* number of supported colors */ #define KBLOCK 250 /* sizeof kill buffer chunks */ #define NRING 16 /* # of buffers in kill ring */ #define NBLOCK 16 /* line block chunk size */ #define NVSIZE 10 /* max #chars in a var name */ #define NMARKS 10 /* number of marks */ #define CTRL 0x0100 /* Control flag, or'ed in */ #define META 0x0200 /* Meta flag, or'ed in */ #define CTLX 0x0400 /* ^X flag, or'ed in */ #define SPEC 0x0800 /* special key (function keys) */ #define MOUS 0x1000 /* alternative input device (mouse) */ #define SHFT 0x2000 /* shifted (for function keys) */ #define ALTD 0x4000 /* ALT key... */ #define MENU MOUS+SPEC /* menu selection (WINDOW_MSWIN) */ #define BINDNUL 0 /* not bount to anything */ #define BINDFNC 1 /* key bound to a function */ #define BINDBUF 2 /* key bound to a buffer */ #define FORWARD 0 /* doing things forward */ #define BACKWARD -1 /* doing things in reverse */ #ifdef FALSE #undef FALSE #endif #ifdef TRUE #undef TRUE #endif #define FALSE 0 /* False, no, bad, etc. */ #define TRUE 1 /* True, yes, good, etc. */ #define ABORT 2 /* Death, ^G, abort, etc. */ #define FAILED 3 /* not-quite fatal false return */ #define STOP 0 /* keyboard macro not in use */ #define PLAY 1 /* playing */ #define RECORD 2 /* recording */ /* Competion types */ #define CMP_BUFFER 0 #define CMP_COMMAND 1 #define CMP_FILENAME 2 /* Directive definitions */ #define DIF 0 #define DELSE 1 #define DENDIF 2 #define DGOTO 3 #define DRETURN 4 #define DENDM 5 #define DWHILE 6 #define DENDWHILE 7 #define DBREAK 8 #define DFORCE 9 #define NUMDIRS 10 /* * PTBEG, PTEND, FORWARD, and REVERSE are all toggle-able values for * the scan routines. */ #define PTBEG 0 /* Leave the point at the beginning on search */ #define PTEND 1 /* Leave the point at the end on search */ #define FORWARD 0 /* forward direction */ #define REVERSE 1 /* backwards direction */ #define FIOSUC 0 /* File I/O, success. */ #define FIOFNF 1 /* File I/O, file not found. */ #define FIOEOF 2 /* File I/O, end of file. */ #define FIOERR 3 /* File I/O, error. */ #define FIOMEM 4 /* File I/O, out of memory */ #define FIOFUN 5 /* File I/O, eod of file/bad line*/ #define FIODEL 6 /* Can't delete/rename file */ #if WINDOW_MSWIN /* values for the fbusy flag */ #define FREADING 1 /* file read in progress */ #define FWRITING 2 /* file write in progress */ /* if no file activity, the value FALSE is used */ #endif #define CFCPCN 0x0001 /* Last command was C-P, C-N */ #define CFKILL 0x0002 /* Last command was a kill */ #define CFSRCH 0x0004 /* last command was a search */ #define CFYANK 0x0008 /* last command was a yank */ #define SRNORM 0 /* end past, begin front */ #define SRBEGIN 1 /* always at front */ #define SREND 2 /* always one past end */ #define BELL 0x07 /* a bell character */ #define TAB 0x09 /* a tab character */ #if V7 | USG | SMOS | HPUX | BSD | SUN | XENIX | AVIION #define PATHCHR ':' #else #if WMCS || MPE #define PATHCHR ',' #else #define PATHCHR ';' #endif #endif #define INTWIDTH sizeof(int) * 3 /* Macro argument token types */ #define TKNUL 0 /* end-of-string */ #define TKARG 1 /* interactive argument */ #define TKBUF 2 /* buffer argument */ #define TKVAR 3 /* user variables */ #define TKENV 4 /* environment variables */ #define TKFUN 5 /* function.... */ #define TKDIR 6 /* directive */ #define TKLBL 7 /* line label */ #define TKLIT 8 /* numeric literal */ #define TKSTR 9 /* quoted string literal */ #define TKCMD 10 /* command name */ /* Internal defined functions */ #define nextab(a) (a - (a % tabsize)) + tabsize /* DIFCASE represents the integer difference between upper and lower case letters. It is an xor-able value, which is fortunate, since the relative positions of upper to lower case letters is the opposite of ascii in ebcdic. */ #ifdef islower #undef islower #endif #ifdef isupper #undef isupper #endif #if ASCII #define DIFCASE 0x20 #else #define DIFCASE 0x40 #endif /* and keep the new sun compiler happy.... */ #if SUN #undef isupper #undef islower #define isupper(a) isucase(a) #define islower(a) islcase(a) #endif /* Dynamic RAM tracking and reporting redefinitions */ #if RAMSIZE #define malloc allocate #define free release #else #if VMS & OPTMEM #define malloc VAXC$MALLOC_OPT #define free VAXC$FREE_OPT #define calloc VAXC$CALLOC_OPT #define realloc VAXC$REALLOC_OPT #define cfree VAXC$CFREE_OPT #endif #endif /* under MS Windows, we use dialog boxes to prompt the user for filenames */ #if WINDOW_MSWIN #define FILENAMEREPLY(p,b,nb) filenamedlg(p,b,nb,TRUE) #else #define FILENAMEREPLY(p,b,nb) mlreply(p,b,nb) #endif /* * 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[NMARKS]; /* Line containing "mark" */ short w_marko[NMARKS]; /* 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. */ #if COLOR char w_fcolor; /* current forground color */ char w_bcolor; /* current background color */ #endif int w_fcol; /* first column displayed */ } WINDOW; #define WFFORCE 0x01 /* Window needs forced 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. */ #define WFCOLR 0x20 /* Needs a color change */ /* This structure holds the information about each line appearing on the * video display. The redisplay module uses an array of virtual display * lines. On systems that do not have direct access to display memory, * there is also an array of physical display lines used to minimize * video updating. In most cases, these two arrays are unique. If * WINDOW_MSWIN is 1, there is a pair of such arrays in each SCREEN * structure. */ typedef struct VIDEO { int v_flag; /* Flags */ #if COLOR int v_fcolor; /* current forground color */ int v_bcolor; /* current background color */ int v_rfcolor; /* requested forground color */ int v_rbcolor; /* requested background color */ #endif #if INSDEL && MEMMAP == 0 int v_rline; /* requested screen line # */ #endif char v_text[1]; /* Screen data. */ } VIDEO; #define VFCHG 0x0001 /* Changed flag */ #define VFEXT 0x0002 /* extended (beyond column 80) */ #define VFREV 0x0004 /* reverse video status */ #define VFREQ 0x0008 /* reverse video request */ #define VFCOL 0x0010 /* color change requested */ #define VFNEW 0x8000 /* contents not meaningful yet */ /* * This structure holds the information about each separate "screen" * within the current editing session. On a character based system, these * screens overlay each other, and can individually be brought to front. * On a windowing system like MicroSoft Windows 3.0, OS/2, the Macintosh, * Intuition, Sunview or X-windows, each screen is represented in an OS * window. The terminolgy is wrong in emacs..... * * EMACS The outside World * screen window * window pane */ typedef struct SCREEN { struct SCREEN *s_next_screen; /* link to next screen in list */ WINDOW *s_first_window; /* head of linked list of windows */ WINDOW *s_cur_window; /* current window in this screen */ char *s_screen_name; /* name of the current window */ short s_roworg; /* row origin of stored screen */ short s_colorg; /* column origin of stored screen */ short s_nrow; /* row width of stored screen */ short s_ncol; /* column origin of stored screen */ #if WINDOW_MSWIN VIDEO **s_virtual; /* virtual screen contents */ VIDEO **s_physical; /* physical screen contents */ int s_drvhandle; /* handle for the "term" driver */ #endif } SCREEN; /* * 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" Buffers may be "Inactive" which means the files associated with them * have not been read in yet. These get read in at "use buffer" time. */ 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[NMARKS]; /* The same as the above two, */ short b_marko[NMARKS]; /* but for the "mark" */ int b_fcol; /* first col to display */ struct LINE *b_linep; /* Link to the header LINE */ struct LINE *b_topline; /* Link to narrowed top text */ struct LINE *b_botline; /* Link to narrowed bottom text */ char b_active; /* window activated flag */ char b_nwnd; /* Count of windows on buffer */ char b_exec; /* how many active executions */ char b_flag; /* Flags */ int b_mode; /* editor mode of this buffer */ char b_fname[NFILEN]; /* File name */ char b_bname[NBUFN]; /* Buffer name */ #if CRYPT char b_key[NPAT]; /* current encrypted key */ #endif } BUFFER; #define BFINVS 0x01 /* Internal invisable buffer */ #define BFCHG 0x02 /* Changed since last write */ #define BFTRUNC 0x04 /* buffer was truncated when read */ #define BFNAROW 0x08 /* buffer has been narrowed */ /* mode flags */ #define NUMMODES 10 /* # of defined modes */ #define MDWRAP 0x0001 /* word wrap */ #define MDCMOD 0x0002 /* C indentation and fence match*/ #define MDSPELL 0x0004 /* spell error parsing */ #define MDEXACT 0x0008 /* Exact matching for searches */ #define MDVIEW 0x0010 /* read-only buffer */ #define MDOVER 0x0020 /* overwrite mode */ #define MDMAGIC 0x0040 /* regular expresions in search */ #define MDCRYPT 0x0080 /* encrytion mode active */ #define MDASAVE 0x0100 /* auto-save mode */ #define MDREPL 0x0200 /* replace mode */ /* * The starting position of a region, and the size of the region in * characters, is kept in a region structure. Used by the region commands. */ typedef struct { struct LINE *r_linep; /* Origin LINE address. */ short r_offset; /* Origin LINE offset. */ long 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. */ 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_mrow; /* max number of rows allowable */ short t_nrow; /* current number of rows used */ short t_mcol; /* max Number of columns. */ short t_ncol; /* current Number of columns. */ short t_roworg; /* origin row (normally zero) */ short t_colorg; /* origin column (normally zero)*/ short t_margin; /* min margin for extended lines*/ short t_scrsiz; /* size of scroll region " */ int t_pause; /* # times thru update to pause */ int (PASCAL NEAR *t_open)(); /* Open terminal at the start. */ int (PASCAL NEAR *t_close)(); /* Close terminal at end. */ int (PASCAL NEAR *t_kopen)(); /* Open keyboard */ int (PASCAL NEAR *t_kclose)(); /* close keyboard */ int (PASCAL NEAR *t_getchar)(); /* Get character from keyboard. */ int (PASCAL NEAR *t_putchar)(); /* Put character to display. */ int (PASCAL NEAR *t_flush)(); /* Flush output buffers. */ int (PASCAL NEAR *t_move)(); /* Move the cursor, origin 0. */ int (PASCAL NEAR *t_eeol)(); /* Erase to end of line. */ int (PASCAL NEAR *t_eeop)(); /* Erase to end of page. */ int (PASCAL NEAR *t_clrdesk)(); /* Clear the page totally */ int (PASCAL NEAR *t_beep)(); /* Beep. */ int (PASCAL NEAR *t_rev)(); /* set reverse video state */ int (PASCAL NEAR *t_rez)(); /* change screen resolution */ #if COLOR int (PASCAL NEAR *t_setfor)(); /* set forground color */ int (PASCAL NEAR *t_setback)(); /* set background color */ #endif #if INSDEL int (PASCAL NEAR *t_insline)(); /* insert a screen line */ int (PASCAL NEAR *t_delline)(); /* delete a screen line */ #endif #if WINDOW_MSWIN int (PASCAL NEAR *t_sleep)(); /* go to sleep for a while */ int (PASCAL NEAR *t_newscr)(); /* create new screen display */ int (PASCAL NEAR *t_delscr)(); /* destroy screen display */ int (PASCAL NEAR *t_selscr)(); /* select screen display */ int (PASCAL NEAR *t_sizscr)(); /* resize screen display */ int (PASCAL NEAR *t_topscr)(); /* bring screen to top */ #endif } TERM; /* TEMPORARY macros for terminal I/O (to be placed in a machine dependant place later) */ #define TTopen (*term.t_open) #define TTclose (*term.t_close) #define TTkopen (*term.t_kopen) #define TTkclose (*term.t_kclose) #define TTgetc (*term.t_getchar) #define TTputc (*term.t_putchar) #define TTflush (*term.t_flush) #define TTmove (*term.t_move) #define TTeeol (*term.t_eeol) #define TTeeop (*term.t_eeop) #define TTclrdesk (*term.t_clrdesk) #define TTbeep (*term.t_beep) #define TTrev (*term.t_rev) #define TTrez (*term.t_rez) #if COLOR #define TTforg (*term.t_setfor) #define TTbacg (*term.t_setback) #endif /* Structure for the table of current key bindings */ ETYPE EPOINTER { int (PASCAL NEAR *fp)(); /* C routine to invoke */ BUFFER *buf; /* buffer to execute */ }; typedef struct { short k_code; /* Key code */ short k_type; /* binding type (C function or EMACS buffer) */ ETYPE EPOINTER k_ptr; /* ptr to thing to execute */ } KEYTAB; /* structure for the name binding table */ typedef struct { char *n_name; /* name of function key */ int (PASCAL NEAR *n_func)(); /* function name is bound to */ } NBIND; /* The editor holds deleted text chunks in the KILL buffer. The kill buffer is logically a stream of ascii characters, however due to its unpredicatable size, it gets implemented as a linked list of chunks. (The d_ prefix is for "deleted" text, as k_ was taken up by the keycode structure) */ typedef struct KILL { struct KILL *d_next; /* link to next chunk, NULL if last */ char d_chunk[KBLOCK]; /* deleted text */ } KILL; /* When emacs' command interpetor needs to get a variable's name, rather than it's value, it is passed back as a VDESC variable description structure. The v_num field is a index into the appropriate variable table. */ typedef struct VDESC { int v_type; /* type of variable */ int v_num; /* ordinal pointer to variable in list */ } VDESC; /* The !WHILE directive in the execution language needs to stack references to pending whiles. These are stored linked to each currently open procedure via a linked list of the following structure */ typedef struct WHBLOCK { LINE *w_begin; /* ptr to !while statement */ LINE *w_end; /* ptr to the !endwhile statement*/ int w_type; /* block type */ struct WHBLOCK *w_next; /* next while */ } WHBLOCK; #define BTWHILE 1 #define BTBREAK 2 /* HICHAR - 1 is the largest character we will deal with. * HIBYTE represents the number of bytes in the bitmap. */ #define HICHAR 256 #if OS2 #define HIBYTE_ HICHAR >> 3 #else #define HIBYTE HICHAR >> 3 #endif #if MAGIC /* * Defines for the metacharacters in the regular expression * search routines. MCNIL and LITCHAR are used in both search * and replace metachar-arrays. */ #define MCNIL 0 /* Like the '\0' for strings.*/ #define LITCHAR 1 /* Literal character, or string.*/ #define ANY 2 #define CCL 3 #define NCCL 4 #define BOL 5 #define EOL 6 #define GRPBEG 0x0010 /* Toggle-able value for group begin.*/ #define GRPEND 0x0020 /* Toggle-able value for group end.*/ #define DITTO 2 /* Replacement #define.*/ #define GROUP 3 /* Replacement #define.*/ #define CLOSURE 0x0100 /* An or-able value for a closure modifier.*/ #define CLOSURE_1 0x0200 /* An or-able value for a closure modifier.*/ #define ZEROONE 0x0400 /* An or-able value for a closure modifier.*/ #define ALLCLOS (CLOSURE | CLOSURE_1 | ZEROONE) #define MASKCLO (~ALLCLOS) #define MC_ANY '.' /* 'Any' character (except newline).*/ #define MC_CCL '[' /* Character class.*/ #define MC_NCCL '^' /* Negate character class.*/ #define MC_RCCL '-' /* Range in character class.*/ #define MC_ECCL ']' /* End of character class.*/ #define MC_BOL '^' /* Beginning of line.*/ #define MC_EOL '$' /* End of line.*/ #define MC_CLOSURE '*' /* Closure - zero to many characters match.*/ #define MC_CLOSURE_1 '+' /* Closure - one to many characters match.*/ #define MC_ZEROONE '?' /* Closure - zero to one characters match.*/ #define MC_DITTO '&' /* Use matched string in replacement.*/ #define MC_GRPBEG '(' /* Start of group (begun with a backslash).*/ #define MC_GRPEND ')' /* End of group (begun with a backslash).*/ #define MC_ESC '\\' /* Escape - suppress meta-meaning.*/ #define MAXGROUPS 10 /* 1 + maximum # of r. e. groups. */ #define BIT(n) (1 << (n)) /* An integer with one bit set.*/ /* Typedefs that define the bitmap type for searching (BITMAP), * the meta-character structure for MAGIC mode searching (MC), * and the meta-character structure for MAGIC mode replacment (RMC). */ typedef char *BITMAP; typedef struct { short int mc_type; union { int lchar; int group_no; BITMAP cclmap; } u; } MC; typedef struct { short int mc_type; union { int group_no; char *rstr; } u; } RMC; #endif /* This is the message which should be added to any "About MicroEMACS" boxes on any of the machines with window managers. ------------------------------------------ | | | MicroEMACS v3.xx | | for the ............ | | | | Text Editor and Corrector | | | | written by Daniel M. Lawrence | | [based on code by Dave Conroy] | | | | Send inquiries and donations to: | | 617 New York St | | Lafayette, IN 47901 | | | ------------------------------------------ */