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uemacs/estruct.h
Linus Torvalds fa00fe882f Stop using 'short' for line and allocation sizes 
Yes, yes, it probably made sense 30 years ago as a way to save a tiny
amount of memory, but especially when interspersed in structures that
have pointers (aligned to 64 bits these days), it's not even saving
memory today.  And it makes us fail in nasty ways when looking at files
with long lines.

So just make them 'int'.  And if you have a line that is longer than
2GB, you only have yourself to blame.  I no longer care.

In case anybody care, the "test-case" for this was a lovely UDDF file
with a binary divecomputer dump encoded as an XML element.  Resulting in
a lovely 41kB single line.  Not what poor micro-emacs was designed for,
I'm afraid.

I really should just learn another editor, rather than continue to
polish this turd.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-22 14:32:16 -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" */
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
};
#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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