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uemacs/estruct.h
Linus Torvalds 8841922689 Don't use 'char' for number of lines 
Heh.  My new UHD monitor makes it easy to have more than 127 lines of
text.  I guess the 'char' could be an unsigned char, but quite frankly,
trying to save a couple of bytes per open editor window seems a bit
excessive these days.  So just make it 'int'.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-08 14:53:04 -08:00

681 lines
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/* ESTRUCT.H
*
* Structure and preprocessor defines
*
* written by Dave G. Conroy
* modified by Steve Wilhite, George Jones
* substantially modified by Daniel Lawrence
* modified by Petri Kutvonen
*/
#define MAXCOL 500
#define MAXROW 500
#ifdef MSDOS
#undef MSDOS
#endif
#ifdef EGA
#undef EGA
#endif
#ifdef CTRLZ
#undef CTRLZ
#endif
/* Machine/OS definitions. */
#if defined(AUTOCONF) || defined(MSDOS) || defined(BSD) || defined(SYSV) || defined(VMS)
/* Make an intelligent guess about the target system. */
#if defined(__TURBOC__)
#define MSDOS 1 /* MS/PC DOS 3.1-4.0 with Turbo C 2.0 */
#else
#define MSDOS 0
#endif
#if defined(BSD) || defined(sun) || defined(ultrix) || (defined(vax) && defined(unix)) || defined(ultrix) || defined(__osf__)
#ifndef BSD
#define BSD 1 /* Berkeley UNIX */
#endif
#else
#define BSD 0
#endif
#if defined(SVR4) || defined(__linux__) /* ex. SunOS 5.3 */
#define SVR4 1
#define SYSV 1
#undef BSD
#endif
#if defined(SYSV) || defined(u3b2) || defined(_AIX) || (defined(i386) && defined(unix)) || defined(__hpux)
#define USG 1 /* System V UNIX */
#else
#define USG 0
#endif
#if defined(VMS) || (defined(vax) && ! defined(unix))
#define VMS 1 /* VAX/VMS */
#else
#define VMS 0
#endif
#define V7 0 /* No more. */
#else
#define MSDOS 1 /* MS-DOS */
#define V7 0 /* V7 UNIX or Coherent or BSD4.2 */
#define BSD 0 /* UNIX BSD 4.2 and ULTRIX */
#define USG 0 /* UNIX system V */
#define VMS 0 /* VAX/VMS */
#endif /*autoconf */
#ifndef AUTOCONF
/* Compiler definitions */
#define UNIX 0 /* a random UNIX compiler */
#define MSC 0 /* MicroSoft C compiler, versions 3 up */
#define TURBO 1 /* Turbo C/MSDOS */
#else
#define UNIX (V7 | BSD | USG)
#define MSC 0
#define TURBO MSDOS
#endif /*autoconf */
/* Debugging options */
#define RAMSIZE 0 /* dynamic RAM memory usage tracking */
#define RAMSHOW 0 /* auto dynamic RAM reporting */
#ifndef AUTOCONF
/* Special keyboard definitions */
#define VT220 0 /* Use keypad escapes P.K. */
#define VT100 0 /* Handle VT100 style keypad. */
/* Terminal Output definitions */
#define ANSI 0 /* ANSI escape sequences */
#define VMSVT 0 /* various VMS terminal entries */
#define VT52 0 /* VT52 terminal (Zenith). */
#define TERMCAP 0 /* Use TERMCAP */
#define IBMPC 1 /* IBM-PC CGA/MONO/EGA driver */
#else
#define VT220 (UNIX | VMS)
#define VT100 0
#define ANSI 0
#define VMSVT VMS
#define VT52 0
#define TERMCAP UNIX
#define IBMPC MSDOS
#endif /* Autoconf. */
/* Configuration options */
#define CVMVAS 1 /* arguments to page forward/back in pages */
#define CLRMSG 0 /* space clears the message line with no insert */
#define CFENCE 1 /* fench matching in CMODE */
#define TYPEAH 1 /* type ahead causes update to be skipped */
#define DEBUGM 1 /* $debug triggers macro debugging */
#define VISMAC 0 /* update display during keyboard macros */
#define CTRLZ 0 /* add a ^Z at end of files under MSDOS only */
#define ADDCR 0 /* ajout d'un CR en fin de chaque ligne (ST520) */
#define NBRACE 1 /* new style brace matching command */
#define REVSTA 1 /* Status line appears in reverse video */
#ifndef AUTOCONF
#define COLOR 1 /* color commands and windows */
#define FILOCK 0 /* file locking under unix BSD 4.2 */
#else
#define COLOR MSDOS
#ifdef SVR4
#define FILOCK 1
#else
#define FILOCK BSD
#endif
#endif /* Autoconf. */
#define ISRCH 1 /* Incremental searches like ITS EMACS */
#define WORDPRO 1 /* Advanced word processing features */
#define APROP 1 /* Add code for Apropos command */
#define CRYPT 1 /* file encryption enabled? */
#define MAGIC 1 /* include regular expression matching? */
#define AEDIT 1 /* advanced editing options: en/detabbing */
#define PROC 1 /* named procedures */
#define CLEAN 0 /* de-alloc memory on exit */
#define ASCII 1 /* always using ASCII char sequences for now */
#define EBCDIC 0 /* later IBM mainfraim versions will use EBCDIC */
#ifndef AUTOCONF
#define XONXOFF 0 /* don't disable XON-XOFF flow control P.K. */
#define NATIONL 0 /* interprete [,],\,{,},| as characters P.K. */
#else
#define XONXOFF (UNIX | VMS)
#define NATIONL (UNIX | VMS)
#endif /* Autoconf. */
#define PKCODE 1 /* include my extensions P.K., define always */
#define IBMCHR MSDOS /* use IBM PC character set P.K. */
#define SCROLLCODE 1 /* scrolling code P.K. */
/* System dependant library redefinitions, structures and includes. */
#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 VMS
#define atoi xatoi
#define abs xabs
#define getname xgetname
#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 VMS
#define unlink(a) delete(a)
#endif
/* Define some ability flags. */
#if IBMPC
#define MEMMAP 1
#else
#define MEMMAP 0
#endif
#if MSDOS | V7 | USG | BSD
#define ENVFUNC 1
#else
#define ENVFUNC 0
#endif
/* Emacs global flag bit definitions (for gflags). */
#define GFREAD 1
/* Internal constants. */
#define NBINDS 256 /* max # of bound keys */
#define NFILEN 80 /* # of bytes, file name */
#define NBUFN 16 /* # 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 8 /* number of supported colors */
#define KBLOCK 250 /* sizeof kill buffer chunks */
#define CONTROL 0x10000000 /* Control flag, or'ed in */
#define META 0x20000000 /* Meta flag, or'ed in */
#define CTLX 0x40000000 /* ^X flag, or'ed in */
#define SPEC 0x80000000 /* special key (function keys) */
#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 */
/* 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 CFCPCN 0x0001 /* Last command was C-P, C-N */
#define CFKILL 0x0002 /* Last command was a kill */
#define BELL 0x07 /* a bell character */
#define TAB 0x09 /* a tab character */
#if V7 | USG | BSD
#define PATHCHR ':'
#else
#define PATHCHR ';'
#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 & ~tabmask) + (tabmask+1)
#ifdef abs
#undef abs
#endif
/* 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
#if PKCODE
#ifdef isupper
#undef isupper
#endif
#endif
#if ASCII
#define DIFCASE 0x20
#if NATIONL
#define LASTUL ']'
#define LASTLL '}'
#else
#define LASTUL 'Z'
#define LASTLL 'z'
#endif
#if IBMCHR
#define isletter(c) (('a' <= c && LASTLL >= c) || ('A' <= c && LASTUL >= c) || (128<=c && c<=167))
#define islower(c) (('a' <= c && LASTLL >= c))
#define isupper(c) (('A' <= c && LASTUL >= c))
#else
#define isletter(c) isxletter((0xFF & (c)))
#define islower(c) isxlower((0xFF & (c)))
#define isupper(c) isxupper((0xFF & (c)))
#define isxletter(c) (('a' <= c && LASTLL >= c) || ('A' <= c && LASTUL >= c) || (192<=c && c<=255))
#define isxlower(c) (('a' <= c && LASTLL >= c) || (224 <= c && 252 >= c))
#define isxupper(c) (('A' <= c && LASTUL >= c) || (192 <= c && 220 >= c))
#endif
#endif
#if EBCDIC
#define DIFCASE 0x40
#define isletter(c) (('a' <= c && 'i' >= c) || ('j' <= c && 'r' >= c) || ('s' <= c && 'z' >= c) || ('A' <= c && 'I' >= c) || ('J' <= c && 'R' >= c) || ('S' <= c && 'Z' >= c))
#define islower(c) (('a' <= c && 'i' >= c) || ('j' <= c && 'r' >= c) || ('s' <= c && 'z' >= c))
#if PKCODE
#define isupper(c) (('A' <= c && 'I' >= c) || ('J' <= c && 'R' >= c) || ('S' <= c && 'Z' >= c))
#endif
#endif
/* Dynamic RAM tracking and reporting redefinitions */
#if RAMSIZE
#define malloc allocate
#define free release
#endif
/* De-allocate memory always on exit (if the operating system or
main program can not
*/
#if CLEAN
#define exit(a) cexit(a)
#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.
*/
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 "." */
struct line *w_markp; /* Line containing "mark" */
int w_doto; /* Byte offset for "." */
int w_marko; /* Byte offset for "mark" */
int w_toprow; /* Origin 0 top row of window */
int 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
};
#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 */
#if SCROLLCODE
#define WFKILLS 0x40 /* something was deleted */
#define WFINS 0x80 /* something was inserted */
#endif
/*
* 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.
*/
struct buffer {
struct buffer *b_bufp; /* Link to next struct buffer */
struct line *b_dotp; /* Link to "." struct line structure */
struct line *b_markp; /* The same as the above two, */
struct line *b_linep; /* Link to the header struct line */
int b_doto; /* Offset of "." in above struct line */
int b_marko; /* but for the "mark" */
int b_mode; /* editor mode of this buffer */
char b_active; /* window activated flag */
char b_nwnd; /* Count of windows on buffer */
char b_flag; /* Flags */
char b_fname[NFILEN]; /* File name */
char b_bname[NBUFN]; /* Buffer name */
#if CRYPT
char b_key[NPAT]; /* current encrypted key */
#endif
};
#define BFINVS 0x01 /* Internal invisable buffer */
#define BFCHG 0x02 /* Changed since last write */
#define BFTRUNC 0x04 /* buffer was truncated when read */
/* 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 parcing */
#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 */
/*
* 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.
*/
struct region {
struct line *r_linep; /* Origin struct line address. */
int r_offset; /* Origin struct line offset. */
long r_size; /* Length in characters. */
};
/*
* 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.
*/
struct terminal {
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_margin; /* min margin for extended lines */
short t_scrsiz; /* size of scroll region " */
int t_pause; /* # times thru update to pause */
void (*t_open)(void); /* Open terminal at the start. */
void (*t_close)(void); /* Close terminal at end. */
void (*t_kopen)(void); /* Open keyboard */
void (*t_kclose)(void); /* close keyboard */
int (*t_getchar)(void); /* Get character from keyboard. */
int (*t_putchar)(int); /* Put character to display. */
void (*t_flush) (void); /* Flush output buffers. */
void (*t_move)(int, int);/* Move the cursor, origin 0. */
void (*t_eeol)(void); /* Erase to end of line. */
void (*t_eeop)(void); /* Erase to end of page. */
void (*t_beep)(void); /* Beep. */
void (*t_rev)(int); /* set reverse video state */
int (*t_rez)(char *); /* change screen resolution */
#if COLOR
int (*t_setfor) (); /* set forground color */
int (*t_setback) (); /* set background color */
#endif
#if SCROLLCODE
void (*t_scroll)(int, int,int); /* scroll a region of the screen */
#endif
};
/* 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 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 initial key bindings. */
struct key_tab {
int k_code; /* Key code */
int (*k_fp)(int, int); /* Routine to handle it */
};
/* Structure for the name binding table. */
struct name_bind {
char *n_name; /* name of function key */
int (*n_func)(int, int); /* function name is bound to */
};
/* The editor holds deleted text chunks in the struct 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).
*/
struct kill {
struct kill *d_next; /* Link to next chunk, NULL if last. */
char d_chunk[KBLOCK]; /* Deleted text. */
};
/* When emacs' command interpetor needs to get a variable's name,
* rather than it's value, it is passed back as a variable description
* structure. The v_num field is a index into the appropriate variable table.
*/
struct variable_description {
int v_type; /* Type of variable. */
int v_num; /* Ordinal pointer to variable in list. */
};
/* 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.
*/
struct while_block {
struct line *w_begin; /* ptr to !while statement */
struct line *w_end; /* ptr to the !endwhile statement */
int w_type; /* block type */
struct while_block *w_next; /* next while */
};
#define BTWHILE 1
#define BTBREAK 2
/*
* Incremental search defines.
*/
#if ISRCH
#define CMDBUFLEN 256 /* Length of our command buffer */
#define IS_ABORT 0x07 /* Abort the isearch */
#define IS_BACKSP 0x08 /* Delete previous char */
#define IS_TAB 0x09 /* Tab character (allowed search char) */
#define IS_NEWLINE 0x0D /* New line from keyboard (Carriage return) */
#define IS_QUOTE 0x11 /* Quote next character */
#define IS_REVERSE 0x12 /* Search backward */
#define IS_FORWARD 0x13 /* Search forward */
#define IS_VMSQUOTE 0x16 /* VMS quote character */
#define IS_VMSFORW 0x18 /* Search forward for VMS */
#define IS_QUIT 0x1B /* Exit the search */
#define IS_RUBOUT 0x7F /* Delete previous character */
/* IS_QUIT is no longer used, the variable metac is used instead */
#endif
#if defined(MAGIC)
/*
* Defines for the metacharacters in the regular expression
* search routines.
*/
#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 DITTO 7
#define CLOSURE 256 /* An or-able value. */
#define MASKCL (CLOSURE - 1)
#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 - does not extend past newline. */
#define MC_DITTO '&' /* Use matched string in replacement. */
#define MC_ESC '\\' /* Escape - suppress meta-meaning. */
#define BIT(n) (1 << (n)) /* An integer with one bit set. */
#define CHCASE(c) ((c) ^ DIFCASE) /* Toggle the case of a letter. */
/* HICHAR - 1 is the largest character we will deal with.
* HIBYTE represents the number of bytes in the bitmap.
*/
#define HICHAR 256
#define HIBYTE HICHAR >> 3
/* Typedefs that define the meta-character structure for MAGIC mode searching
* (struct magic), and the meta-character structure for MAGIC mode replacement
* (struct magic_replacement).
*/
struct magic {
short int mc_type;
union {
int lchar;
char *cclmap;
} u;
};
struct magic_replacement {
short int mc_type;
char *rstr;
};
#endif /* MAGIC */
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