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rsc 2003-09-30 17:47:41 +00:00
parent 5f7d5e8d18
commit b2cfc4e2e7
242 changed files with 18177 additions and 0 deletions
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79
include/bio.h Normal file
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#ifndef _BIOH_
#define _BIOH_ 1
#include <sys/types.h> /* for off_t */
#include <fcntl.h> /* for O_RDONLY, O_WRONLY */
typedef struct Biobuf Biobuf;
enum
{
Bsize = 8*1024,
Bungetsize = 4, /* space for ungetc */
Bmagic = 0x314159,
Beof = -1,
Bbad = -2,
Binactive = 0, /* states */
Bractive,
Bwactive,
Bracteof,
Bend
};
struct Biobuf
{
int icount; /* neg num of bytes at eob */
int ocount; /* num of bytes at bob */
int rdline; /* num of bytes after rdline */
int runesize; /* num of bytes of last getrune */
int state; /* r/w/inactive */
int fid; /* open file */
int flag; /* magic if malloc'ed */
off_t offset; /* offset of buffer in file */
int bsize; /* size of buffer */
unsigned char* bbuf; /* pointer to beginning of buffer */
unsigned char* ebuf; /* pointer to end of buffer */
unsigned char* gbuf; /* pointer to good data in buf */
unsigned char b[Bungetsize+Bsize];
};
#define BGETC(bp)\
((bp)->icount?(bp)->bbuf[(bp)->bsize+(bp)->icount++]:Bgetc((bp)))
#define BPUTC(bp,c)\
((bp)->ocount?(bp)->bbuf[(bp)->bsize+(bp)->ocount++]=(c),0:Bputc((bp),(c)))
#define BOFFSET(bp)\
(((bp)->state==Bractive)?\
(bp)->offset + (bp)->icount:\
(((bp)->state==Bwactive)?\
(bp)->offset + ((bp)->bsize + (bp)->ocount):\
-1))
#define BLINELEN(bp)\
(bp)->rdline
#define BFILDES(bp)\
(bp)->fid
int Bbuffered(Biobuf*);
int Bfildes(Biobuf*);
int Bflush(Biobuf*);
int Bgetc(Biobuf*);
int Bgetd(Biobuf*, double*);
int Binit(Biobuf*, int, int);
int Binits(Biobuf*, int, int, unsigned char*, int);
int Blinelen(Biobuf*);
off_t Boffset(Biobuf*);
Biobuf* Bopen(char*, int);
int Bprint(Biobuf*, char*, ...);
int Bputc(Biobuf*, int);
void* Brdline(Biobuf*, int);
long Bread(Biobuf*, void*, long);
off_t Bseek(Biobuf*, off_t, int);
int Bterm(Biobuf*);
int Bungetc(Biobuf*);
long Bwrite(Biobuf*, void*, long);
char* Brdstr(Biobuf*, int, int);
long Bgetrune(Biobuf*);
int Bputrune(Biobuf*, long);
#endif

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typedef struct Cursor Cursor;
struct Cursor
{
Point offset;
uchar clr[2*16];
uchar set[2*16];
};

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typedef struct Cachefont Cachefont;
typedef struct Cacheinfo Cacheinfo;
typedef struct Cachesubf Cachesubf;
typedef struct Display Display;
typedef struct Font Font;
typedef struct Fontchar Fontchar;
typedef struct Image Image;
typedef struct Mouse Mouse;
typedef struct Point Point;
typedef struct Rectangle Rectangle;
typedef struct RGB RGB;
typedef struct Screen Screen;
typedef struct Subfont Subfont;
extern int Rfmt(Fmt*);
extern int Pfmt(Fmt*);
enum
{
DOpaque = 0xFFFFFFFF,
DTransparent = 0x00000000, /* only useful for allocimage, memfillcolor */
DBlack = 0x000000FF,
DWhite = 0xFFFFFFFF,
DRed = 0xFF0000FF,
DGreen = 0x00FF00FF,
DBlue = 0x0000FFFF,
DCyan = 0x00FFFFFF,
DMagenta = 0xFF00FFFF,
DYellow = 0xFFFF00FF,
DPaleyellow = 0xFFFFAAFF,
DDarkyellow = 0xEEEE9EFF,
DDarkgreen = 0x448844FF,
DPalegreen = 0xAAFFAAFF,
DMedgreen = 0x88CC88FF,
DDarkblue = 0x000055FF,
DPalebluegreen= 0xAAFFFFFF,
DPaleblue = 0x0000BBFF,
DBluegreen = 0x008888FF,
DGreygreen = 0x55AAAAFF,
DPalegreygreen = 0x9EEEEEFF,
DYellowgreen = 0x99994CFF,
DMedblue = 0x000099FF,
DGreyblue = 0x005DBBFF,
DPalegreyblue = 0x4993DDFF,
DPurpleblue = 0x8888CCFF,
DNotacolor = 0xFFFFFF00,
DNofill = DNotacolor,
};
enum
{
Displaybufsize = 8000,
ICOSSCALE = 1024,
Borderwidth = 4,
};
enum
{
/* refresh methods */
Refbackup = 0,
Refnone = 1,
Refmesg = 2
};
#define NOREFRESH ((void*)-1)
enum
{
/* line ends */
Endsquare = 0,
Enddisc = 1,
Endarrow = 2,
Endmask = 0x1F
};
#define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<23))
typedef enum
{
/* Porter-Duff compositing operators */
Clear = 0,
SinD = 8,
DinS = 4,
SoutD = 2,
DoutS = 1,
S = SinD|SoutD,
SoverD = SinD|SoutD|DoutS,
SatopD = SinD|DoutS,
SxorD = SoutD|DoutS,
D = DinS|DoutS,
DoverS = DinS|DoutS|SoutD,
DatopS = DinS|SoutD,
DxorS = DoutS|SoutD, /* == SxorD */
Ncomp = 12,
} Drawop;
/*
* image channel descriptors
*/
enum {
CRed = 0,
CGreen,
CBlue,
CGrey,
CAlpha,
CMap,
CIgnore,
NChan,
};
#define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15))
#define CHAN1(a,b) __DC(a,b)
#define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d)))
#define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f)))
#define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h)))
#define NBITS(c) ((c)&15)
#define TYPE(c) (((c)>>4)&15)
enum {
GREY1 = CHAN1(CGrey, 1),
GREY2 = CHAN1(CGrey, 2),
GREY4 = CHAN1(CGrey, 4),
GREY8 = CHAN1(CGrey, 8),
CMAP8 = CHAN1(CMap, 8),
RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5),
RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5),
RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8),
BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8),
RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8),
ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), /* stupid VGAs */
XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8),
XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8),
};
extern char* chantostr(char*, u32int);
extern u32int strtochan(char*);
extern int chantodepth(u32int);
struct Point
{
int x;
int y;
};
struct Rectangle
{
Point min;
Point max;
};
typedef void (*Reffn)(Image*, Rectangle, void*);
struct Screen
{
Display *display; /* display holding data */
int id; /* id of system-held Screen */
Image *image; /* unused; for reference only */
Image *fill; /* color to paint behind windows */
};
struct Display
{
QLock qlock;
int locking; /*program is using lockdisplay */
int dirno;
int imageid;
int local;
void (*error)(Display*, char*);
char *devdir;
char *windir;
char oldlabel[64];
u32int dataqid;
Image *image;
Image *white;
Image *black;
Image *opaque;
Image *transparent;
uchar *buf;
int bufsize;
uchar *bufp;
uchar *obuf;
int obufsize;
uchar *obufp;
Font *defaultfont;
Subfont *defaultsubfont;
Image *windows;
Image *screenimage;
int _isnewdisplay;
};
struct Image
{
Display *display; /* display holding data */
int id; /* id of system-held Image */
Rectangle r; /* rectangle in data area, local coords */
Rectangle clipr; /* clipping region */
int depth; /* number of bits per pixel */
u32int chan;
int repl; /* flag: data replicates to tile clipr */
Screen *screen; /* 0 if not a window */
Image *next; /* next in list of windows */
};
struct RGB
{
u32int red;
u32int green;
u32int blue;
};
/*
* Subfonts
*
* given char c, Subfont *f, Fontchar *i, and Point p, one says
* i = f->info+c;
* draw(b, Rect(p.x+i->left, p.y+i->top,
* p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
* color, f->bits, Pt(i->x, i->top));
* p.x += i->width;
* to draw characters in the specified color (itself an Image) in Image b.
*/
struct Fontchar
{
int x; /* left edge of bits */
uchar top; /* first non-zero scan-line */
uchar bottom; /* last non-zero scan-line + 1 */
char left; /* offset of baseline */
uchar width; /* width of baseline */
};
struct Subfont
{
char *name;
short n; /* number of chars in font */
uchar height; /* height of image */
char ascent; /* top of image to baseline */
Fontchar *info; /* n+1 character descriptors */
Image *bits; /* of font */
int ref;
};
enum
{
/* starting values */
LOG2NFCACHE = 6,
NFCACHE = (1<<LOG2NFCACHE), /* #chars cached */
NFLOOK = 5, /* #chars to scan in cache */
NFSUBF = 2, /* #subfonts to cache */
/* max value */
MAXFCACHE = 1024+NFLOOK, /* upper limit */
MAXSUBF = 50, /* generous upper limit */
/* deltas */
DSUBF = 4,
/* expiry ages */
SUBFAGE = 10000,
CACHEAGE = 10000
};
struct Cachefont
{
Rune min; /* lowest rune value to be taken from subfont */
Rune max; /* highest rune value+1 to be taken from subfont */
int offset; /* position in subfont of character at min */
char *name; /* stored in font */
char *subfontname; /* to access subfont */
};
struct Cacheinfo
{
ushort x; /* left edge of bits */
uchar width; /* width of baseline */
schar left; /* offset of baseline */
Rune value; /* value of character at this slot in cache */
ushort age;
};
struct Cachesubf
{
u32int age; /* for replacement */
Cachefont *cf; /* font info that owns us */
Subfont *f; /* attached subfont */
};
struct Font
{
char *name;
Display *display;
short height; /* max height of image, interline spacing */
short ascent; /* top of image to baseline */
short width; /* widest so far; used in caching only */
short nsub; /* number of subfonts */
u32int age; /* increasing counter; used for LRU */
int maxdepth; /* maximum depth of all loaded subfonts */
int ncache; /* size of cache */
int nsubf; /* size of subfont list */
Cacheinfo *cache;
Cachesubf *subf;
Cachefont **sub; /* as read from file */
Image *cacheimage;
};
#define Dx(r) ((r).max.x-(r).min.x)
#define Dy(r) ((r).max.y-(r).min.y)
/*
* Image management
*/
extern Image* _allocimage(Image*, Display*, Rectangle, u32int, int, u32int, int, int);
extern Image* allocimage(Display*, Rectangle, u32int, int, u32int);
extern uchar* bufimage(Display*, int);
extern int bytesperline(Rectangle, int);
extern void closedisplay(Display*);
extern void drawerror(Display*, char*);
extern int flushimage(Display*, int);
extern int freeimage(Image*);
extern int _freeimage1(Image*);
extern int geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int);
extern int initdraw(void(*)(Display*, char*), char*, char*);
extern int newwindow(char*);
extern int loadimage(Image*, Rectangle, uchar*, int);
extern int cloadimage(Image*, Rectangle, uchar*, int);
extern int getwindow(Display*, int);
extern int gengetwindow(Display*, char*, Image**, Screen**, int);
extern Image* readimage(Display*, int, int);
extern Image* creadimage(Display*, int, int);
extern int unloadimage(Image*, Rectangle, uchar*, int);
extern int wordsperline(Rectangle, int);
extern int writeimage(int, Image*, int);
extern Image* namedimage(Display*, char*);
extern int nameimage(Image*, char*, int);
extern Image* allocimagemix(Display*, u32int, u32int);
/*
* Colors
*/
extern void readcolmap(Display*, RGB*);
extern void writecolmap(Display*, RGB*);
extern u32int setalpha(u32int, uchar);
/*
* Windows
*/
extern Screen* allocscreen(Image*, Image*, int);
extern Image* _allocwindow(Image*, Screen*, Rectangle, int, u32int);
extern Image* allocwindow(Screen*, Rectangle, int, u32int);
extern void bottomnwindows(Image**, int);
extern void bottomwindow(Image*);
extern int freescreen(Screen*);
extern Screen* publicscreen(Display*, int, u32int);
extern void topnwindows(Image**, int);
extern void topwindow(Image*);
extern int originwindow(Image*, Point, Point);
/*
* Geometry
*/
extern Point Pt(int, int);
extern Rectangle Rect(int, int, int, int);
extern Rectangle Rpt(Point, Point);
extern Point addpt(Point, Point);
extern Point subpt(Point, Point);
extern Point divpt(Point, int);
extern Point mulpt(Point, int);
extern int eqpt(Point, Point);
extern int eqrect(Rectangle, Rectangle);
extern Rectangle insetrect(Rectangle, int);
extern Rectangle rectaddpt(Rectangle, Point);
extern Rectangle rectsubpt(Rectangle, Point);
extern Rectangle canonrect(Rectangle);
extern int rectXrect(Rectangle, Rectangle);
extern int rectinrect(Rectangle, Rectangle);
extern void combinerect(Rectangle*, Rectangle);
extern int rectclip(Rectangle*, Rectangle);
extern int ptinrect(Point, Rectangle);
extern void replclipr(Image*, int, Rectangle);
extern int drawreplxy(int, int, int); /* used to be drawsetxy */
extern Point drawrepl(Rectangle, Point);
extern int rgb2cmap(int, int, int);
extern int cmap2rgb(int);
extern int cmap2rgba(int);
extern void icossin(int, int*, int*);
extern void icossin2(int, int, int*, int*);
/*
* Graphics
*/
extern void draw(Image*, Rectangle, Image*, Image*, Point);
extern void drawop(Image*, Rectangle, Image*, Image*, Point, Drawop);
extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Point);
extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop);
extern void line(Image*, Point, Point, int, int, int, Image*, Point);
extern void lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop);
extern void poly(Image*, Point*, int, int, int, int, Image*, Point);
extern void polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
extern void fillpoly(Image*, Point*, int, int, Image*, Point);
extern void fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop);
extern Point string(Image*, Point, Image*, Point, Font*, char*);
extern Point stringop(Image*, Point, Image*, Point, Font*, char*, Drawop);
extern Point stringn(Image*, Point, Image*, Point, Font*, char*, int);
extern Point stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop);
extern Point runestring(Image*, Point, Image*, Point, Font*, Rune*);
extern Point runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop);
extern Point runestringn(Image*, Point, Image*, Point, Font*, Rune*, int);
extern Point runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop);
extern Point stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point);
extern Point stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop);
extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point);
extern Point stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop);
extern Point runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point);
extern Point runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop);
extern Point runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point);
extern Point runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop);
extern Point _string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop);
extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*);
extern int bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point);
extern int bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop);
extern int bezspline(Image*, Point*, int, int, int, int, Image*, Point);
extern int bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
extern int bezsplinepts(Point*, int, Point**);
extern int fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point);
extern int fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop);
extern int fillbezspline(Image*, Point*, int, int, Image*, Point);
extern int fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop);
extern void ellipse(Image*, Point, int, int, int, Image*, Point);
extern void ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop);
extern void fillellipse(Image*, Point, int, int, Image*, Point);
extern void fillellipseop(Image*, Point, int, int, Image*, Point, Drawop);
extern void arc(Image*, Point, int, int, int, Image*, Point, int, int);
extern void arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop);
extern void fillarc(Image*, Point, int, int, Image*, Point, int, int);
extern void fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop);
extern void border(Image*, Rectangle, int, Image*, Point);
extern void borderop(Image*, Rectangle, int, Image*, Point, Drawop);
/*
* Font management
*/
extern Font* openfont(Display*, char*);
extern Font* buildfont(Display*, char*, char*);
extern void freefont(Font*);
extern Font* mkfont(Subfont*, Rune);
extern int cachechars(Font*, char**, Rune**, ushort*, int, int*, char**);
extern void agefont(Font*);
extern Subfont* allocsubfont(char*, int, int, int, Fontchar*, Image*);
extern Subfont* lookupsubfont(Display*, char*);
extern void installsubfont(char*, Subfont*);
extern void uninstallsubfont(Subfont*);
extern void freesubfont(Subfont*);
extern Subfont* readsubfont(Display*, char*, int, int);
extern Subfont* readsubfonti(Display*, char*, int, Image*, int);
extern int writesubfont(int, Subfont*);
extern void _unpackinfo(Fontchar*, uchar*, int);
extern Point stringsize(Font*, char*);
extern int stringwidth(Font*, char*);
extern int stringnwidth(Font*, char*, int);
extern Point runestringsize(Font*, Rune*);
extern int runestringwidth(Font*, Rune*);
extern int runestringnwidth(Font*, Rune*, int);
extern Point strsubfontwidth(Subfont*, char*);
extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**);
extern char* subfontname(char*, char*, int);
extern Subfont* _getsubfont(Display*, char*);
extern Subfont* getdefont(Display*);
extern void lockdisplay(Display*);
extern void unlockdisplay(Display*);
extern int drawlsetrefresh(u32int, int, void*, void*);
/*
* Predefined
*/
extern uchar defontdata[];
extern int sizeofdefont;
extern Point ZP;
extern Rectangle ZR;
/*
* Set up by initdraw()
*/
extern Display *display;
extern Font *font;
extern Image *screen;
extern Screen *_screen;
extern int _cursorfd;
extern int _drawdebug; /* set to 1 to see errors from flushimage */
extern void _setdrawop(Display*, Drawop);
extern Display *_initdisplay(void(*)(Display*,char*), char*);
#define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8))
#define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
#define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>8))
#define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
/*
* Compressed image file parameters and helper routines
*/
#define NMATCH 3 /* shortest match possible */
#define NRUN (NMATCH+31) /* longest match possible */
#define NMEM 1024 /* window size */
#define NDUMP 128 /* maximum length of dump */
#define NCBLOCK 6000 /* size of compressed blocks */
extern void _twiddlecompressed(uchar*, int);
extern int _compblocksize(Rectangle, int);
/* XXX backwards helps; should go */
extern int log2[];
extern u32int drawld2chan[];
extern void drawsetdebug(int);
/*
* Port magic.
*/
int _drawmsgread(Display*, void*, int);
int _drawmsgwrite(Display*, void*, int);

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typedef struct Event Event;
typedef struct Menu Menu;
enum
{
Emouse = 1,
Ekeyboard = 2,
};
enum
{
MAXSLAVE = 32,
EMAXMSG = 128+8192, /* size of 9p header+data */
};
struct Mouse
{
int buttons; /* bit array: LMR=124 */
Point xy;
ulong msec;
};
struct Event
{
int kbdc;
Mouse mouse;
int n; /* number of characters in message */
void *v; /* data unpacked by general event-handling function */
uchar data[EMAXMSG]; /* message from an arbitrary file descriptor */
};
struct Menu
{
char **item;
char *(*gen)(int);
int lasthit;
};
/*
* Events
*/
extern void einit(ulong);
extern ulong estart(ulong, int, int);
extern ulong estartfn(ulong, int, int, int (*fn)(int, Event*, uchar*, int));
extern ulong etimer(ulong, int);
extern ulong event(Event*);
extern ulong eread(ulong, Event*);
extern Mouse emouse(void);
extern int ekbd(void);
extern int ecanread(ulong);
extern int ecanmouse(void);
extern int ecankbd(void);
extern void eresized(int); /* supplied by user */
extern int emenuhit(int, Mouse*, Menu*);
extern int eatomouse(Mouse*, char*, int);
extern Rectangle getrect(int, Mouse*);
struct Cursor;
extern void esetcursor(struct Cursor*);
extern void emoveto(Point);
extern Rectangle egetrect(int, Mouse*);
extern void edrawgetrect(Rectangle, int);
extern int ereadmouse(Mouse*);
extern int eatomouse(Mouse*, char*, int);

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/*
* The authors of this software are Rob Pike and Ken Thompson.
* Copyright (c) 2002 by Lucent Technologies.
* Permission to use, copy, modify, and distribute this software for any
* purpose without fee is hereby granted, provided that this entire notice
* is included in all copies of any software which is or includes a copy
* or modification of this software and in all copies of the supporting
* documentation for such software.
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
#ifndef _FMTH_
#define _FMTH_ 1
#include <stdarg.h>
#ifndef _UTFH_
#include <utf.h>
#endif
typedef struct Fmt Fmt;
struct Fmt{
unsigned char runes; /* output buffer is runes or chars? */
void *start; /* of buffer */
void *to; /* current place in the buffer */
void *stop; /* end of the buffer; overwritten if flush fails */
int (*flush)(Fmt *); /* called when to == stop */
void *farg; /* to make flush a closure */
int nfmt; /* num chars formatted so far */
va_list args; /* args passed to dofmt */
int r; /* % format Rune */
int width;
int prec;
unsigned long flags;
};
enum{
FmtWidth = 1,
FmtLeft = FmtWidth << 1,
FmtPrec = FmtLeft << 1,
FmtSharp = FmtPrec << 1,
FmtSpace = FmtSharp << 1,
FmtSign = FmtSpace << 1,
FmtZero = FmtSign << 1,
FmtUnsigned = FmtZero << 1,
FmtShort = FmtUnsigned << 1,
FmtLong = FmtShort << 1,
FmtVLong = FmtLong << 1,
FmtComma = FmtVLong << 1,
FmtByte = FmtComma << 1,
FmtLDouble = FmtByte << 1,
FmtFlag = FmtLDouble << 1
};
extern int print(char*, ...);
extern char* seprint(char*, char*, char*, ...);
extern char* vseprint(char*, char*, char*, va_list);
extern int snprint(char*, int, char*, ...);
extern int vsnprint(char*, int, char*, va_list);
extern char* smprint(char*, ...);
extern char* vsmprint(char*, va_list);
extern int sprint(char*, char*, ...);
extern int fprint(int, char*, ...);
extern int vfprint(int, char*, va_list);
extern int runesprint(Rune*, char*, ...);
extern int runesnprint(Rune*, int, char*, ...);
extern int runevsnprint(Rune*, int, char*, va_list);
extern Rune* runeseprint(Rune*, Rune*, char*, ...);
extern Rune* runevseprint(Rune*, Rune*, char*, va_list);
extern Rune* runesmprint(char*, ...);
extern Rune* runevsmprint(char*, va_list);
extern int fmtfdinit(Fmt*, int, char*, int);
extern int fmtfdflush(Fmt*);
extern int fmtstrinit(Fmt*);
extern char* fmtstrflush(Fmt*);
extern int runefmtstrinit(Fmt*);
extern int quotestrfmt(Fmt *f);
extern void quotefmtinstall(void);
extern int (*fmtdoquote)(int);
extern int fmtinstall(int, int (*)(Fmt*));
extern int dofmt(Fmt*, char*);
extern int fmtprint(Fmt*, char*, ...);
extern int fmtvprint(Fmt*, char*, va_list);
extern int fmtrune(Fmt*, int);
extern int fmtstrcpy(Fmt*, char*);
extern double fmtstrtod(const char *, char **);
extern double fmtcharstod(int(*)(void*), void*);
#endif

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typedef struct Frbox Frbox;
typedef struct Frame Frame;
enum{
BACK,
HIGH,
BORD,
TEXT,
HTEXT,
NCOL
};
#define FRTICKW 3
struct Frbox
{
long wid; /* in pixels */
long nrune; /* <0 ==> negate and treat as break char */
uchar *ptr;
short bc; /* break char */
short minwid;
};
struct Frame
{
Font *font; /* of chars in the frame */
Display *display; /* on which frame appears */
Image *b; /* on which frame appears */
Image *cols[NCOL]; /* text and background colors */
Rectangle r; /* in which text appears */
Rectangle entire; /* of full frame */
void (*scroll)(Frame*, int); /* scroll function provided by application */
Frbox *box;
ulong p0, p1; /* selection */
ushort nbox, nalloc;
ushort maxtab; /* max size of tab, in pixels */
ushort nchars; /* # runes in frame */
ushort nlines; /* # lines with text */
ushort maxlines; /* total # lines in frame */
ushort lastlinefull; /* last line fills frame */
ushort modified; /* changed since frselect() */
Image *tick; /* typing tick */
Image *tickback; /* saved image under tick */
int ticked; /* flag: is tick onscreen? */
};
ulong frcharofpt(Frame*, Point);
Point frptofchar(Frame*, ulong);
int frdelete(Frame*, ulong, ulong);
void frinsert(Frame*, Rune*, Rune*, ulong);
void frselect(Frame*, Mousectl*);
void frselectpaint(Frame*, Point, Point, Image*);
void frdrawsel(Frame*, Point, ulong, ulong, int);
void frdrawsel0(Frame*, Point, ulong, ulong, Image*, Image*);
void frinit(Frame*, Rectangle, Font*, Image*, Image**);
void frsetrects(Frame*, Rectangle, Image*);
void frclear(Frame*, int);
uchar *_frallocstr(Frame*, unsigned);
void _frinsure(Frame*, int, unsigned);
Point _frdraw(Frame*, Point);
void _frgrowbox(Frame*, int);
void _frfreebox(Frame*, int, int);
void _frmergebox(Frame*, int);
void _frdelbox(Frame*, int, int);
void _frsplitbox(Frame*, int, int);
int _frfindbox(Frame*, int, ulong, ulong);
void _frclosebox(Frame*, int, int);
int _frcanfit(Frame*, Point, Frbox*);
void _frcklinewrap(Frame*, Point*, Frbox*);
void _frcklinewrap0(Frame*, Point*, Frbox*);
void _fradvance(Frame*, Point*, Frbox*);
int _frnewwid(Frame*, Point, Frbox*);
int _frnewwid0(Frame*, Point, Frbox*);
void _frclean(Frame*, Point, int, int);
void _frredraw(Frame*, Point);
void _fraddbox(Frame*, int, int);
Point _frptofcharptb(Frame*, ulong, Point, int);
Point _frptofcharnb(Frame*, ulong, int);
int _frstrlen(Frame*, int);
void frtick(Frame*, Point, int);
void frinittick(Frame*);
#define NRUNE(b) ((b)->nrune<0? 1 : (b)->nrune)
#define NBYTE(b) strlen((char*)(b)->ptr)

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typedef struct Keyboardctl Keyboardctl;
struct Keyboardctl
{
struct Channel *c; /* chan(Rune)[20] */
char *file;
int consfd; /* to cons file */
int ctlfd; /* to ctl file */
int pid; /* of slave proc */
};
extern Keyboardctl* initkeyboard(char*);
extern int ctlkeyboard(Keyboardctl*, char*);
extern void closekeyboard(Keyboardctl*);
enum {
KF= 0xF000, /* Rune: beginning of private Unicode space */
/* KF|1, KF|2, ..., KF|0xC is F1, F2, ..., F12 */
Khome= KF|0x0D,
Kup= KF|0x0E,
Kpgup= KF|0x0F,
Kprint= KF|0x10,
Kleft= KF|0x11,
Kright= KF|0x12,
Kdown= 0x80,
Kview= 0x80,
Kpgdown= KF|0x13,
Kins= KF|0x14,
Kend= '\r', /* [sic] */
Kalt= KF|0x15,
Kshift= KF|0x16,
Kctl= KF|0x17,
};

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/*
* Lib9 is miscellany from the Plan 9 C library that doesn't
* fit into libutf or into libfmt, but is still missing from traditional
* Unix C libraries.
*/
#ifndef _LIB9H_
#define _LIB9H_ 1
#if defined(__cplusplus)
extern "C" {
#endif
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <assert.h>
#include <setjmp.h>
#ifndef _FMTH_
# include <fmt.h>
#endif
#define nil ((void*)0)
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
#define _NEEDUCHAR 1
#define _NEEDUSHORT 1
#define _NEEDUINT 1
#define _NEEDULONG 1
#if defined(__linux__)
# include <sys/types.h>
# if defined(__USE_MISC)
# undef _NEEDUSHORT
# undef _NEEDUINT
# undef _NEEDULONG
# endif
#endif
#if defined(__FreeBSD__)
# include <sys/types.h>
# if !defined(_POSIX_SOURCE)
# undef _NEEDUSHORT
# undef _NEEDUINT
# endif
#endif
typedef signed char schar;
typedef unsigned int u32int;
#ifdef _NEEDUCHAR
typedef unsigned char uchar;
#endif
#ifdef _NEEDUSHORT
typedef unsigned short ushort;
#endif
#ifdef _NEEDUINT
typedef unsigned int uint;
#endif
#ifdef _NEEDULONG
typedef unsigned long ulong;
#endif
typedef unsigned long long uvlong;
typedef long long vlong;
/* rfork to create new process running fn(arg) */
#if defined(__FreeBSD__)
#undef RFFDG
#undef RFNOTEG
#undef RFPROC
#undef RFMEM
#undef RFNOWAIT
#undef RFCFDG
#endif
enum
{
/* RFNAMEG = (1<<0), */
/* RFENVG = (1<<1), */
RFFDG = (1<<2),
RFNOTEG = (1<<3),
RFPROC = (1<<4),
RFMEM = (1<<5),
RFNOWAIT = (1<<6),
/* RFCNAMEG = (1<<10), */
/* RFCENVG = (1<<11), */
RFCFDG = (1<<12),
/* RFREND = (1<<13), */
/* RFNOMNT = (1<<14) */
};
extern int ffork(int, void(*)(void*), void*);
/* wait for processes */
#define wait _p9wait
typedef struct Waitmsg Waitmsg;
struct Waitmsg
{
int pid; /* of loved one */
ulong time[3]; /* of loved one & descendants */
char *msg;
};
extern int await(char*, int);
extern Waitmsg* wait(void);
/* synchronization */
typedef struct Lock Lock;
struct Lock
{
int val;
};
extern int _tas(void*);
extern void lock(Lock*);
extern void unlock(Lock*);
extern int canlock(Lock*);
typedef struct QLp QLp;
struct QLp
{
int inuse;
QLp *next;
int state;
};
typedef struct QLock QLock;
struct QLock
{
Lock lock;
int locked;
QLp *head;
QLp *tail;
};
extern void qlock(QLock*);
extern void qunlock(QLock*);
extern int canqlock(QLock*);
extern void _qlockinit(ulong (*)(ulong, ulong));
typedef struct RWLock RWLock;
struct RWLock
{
Lock lock;
int readers;
int writer;
QLp *head;
QLp *tail;
};
extern void rlock(RWLock*);
extern void runlock(RWLock*);
extern int canrlock(RWLock*);
extern void wlock(RWLock*);
extern void wunlock(RWLock*);
extern int canwlock(RWLock*);
typedef struct Rendez Rendez;
struct Rendez
{
QLock *l;
QLp *head;
QLp *tail;
};
extern void rsleep(Rendez*);
extern int rwakeup(Rendez*);
extern int rwakeupall(Rendez*);
extern ulong rendezvous(ulong, ulong);
/* one of a kind */
extern void sysfatal(char*, ...);
extern int nrand(int);
extern void setmalloctag(void*, ulong);
extern void setrealloctag(void*, ulong);
extern void *mallocz(ulong, int);
extern long readn(int, void*, long);
extern void exits(char*);
extern void _exits(char*);
extern ulong getcallerpc(void*);
/* string routines */
extern char* strecpy(char*, char*, char*);
extern int tokenize(char*, char**, int);
extern int cistrncmp(char*, char*, int);
extern int cistrcmp(char*, char*);
extern char* cistrstr(char*, char*);
extern int getfields(char*, char**, int, int, char*);
extern int gettokens(char *, char **, int, char *);
/* formatting helpers */
extern int dec64(uchar*, int, char*, int);
extern int enc64(char*, int, uchar*, int);
extern int dec32(uchar*, int, char*, int);
extern int enc32(char*, int, uchar*, int);
extern int dec16(uchar*, int, char*, int);
extern int enc16(char*, int, uchar*, int);
extern int encodefmt(Fmt*);
/* error string */
enum
{
ERRMAX = 128
};
extern void rerrstr(char*, uint);
extern void werrstr(char*, ...);
extern int errstr(char*, uint);
/* compiler directives on plan 9 */
#define USED(x) if(x){}else{}
#define SET(x) ((x)=0)
/* command line */
extern char *argv0;
#define ARGBEGIN for((argv0||(argv0=*argv)),argv++,argc--;\
argv[0] && argv[0][0]=='-' && argv[0][1];\
argc--, argv++) {\
char *_args, *_argt;\
Rune _argc;\
_args = &argv[0][1];\
if(_args[0]=='-' && _args[1]==0){\
argc--; argv++; break;\
}\
_argc = 0;\
while(*_args && (_args += chartorune(&_argc, _args)))\
switch(_argc)
#define ARGEND SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
#define ARGF() (_argt=_args, _args="",\
(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
#define EARGF(x) (_argt=_args, _args="",\
(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
#define ARGC() _argc
#define OREAD O_RDONLY
#define OWRITE O_WRONLY
#define AEXIST 0
#define AREAD 4
#define AWRITE 2
#define AEXEC 1
#define ORCLOSE 8
#define OCEXEC 16
#define dup dup2
#define exec execv
#define seek lseek
#define getwd getcwd
#if defined(__cplusplus)
}
#endif
#endif /* _LIB9H_ */

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#include <lib9.h>

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typedef struct Menu Menu;
typedef struct Mousectl Mousectl;
struct Mouse
{
int buttons; /* bit array: LMR=124 */
Point xy;
ulong msec;
};
struct Mousectl
{
Mouse m;
struct Channel *c; /* chan(Mouse) */
struct Channel *resizec; /* chan(int)[2] */
/* buffered in case client is waiting for a mouse action before handling resize */
char *file;
int mfd; /* to mouse file */
int cfd; /* to cursor file */
int pid; /* of slave proc */
Display *display;
/*Image* image; / * of associated window/display */
};
struct Menu
{
char **item;
char *(*gen)(int);
int lasthit;
};
/*
* Mouse
*/
extern Mousectl* initmouse(char*, Image*);
extern void moveto(Mousectl*, Point);
extern int readmouse(Mousectl*);
extern void closemouse(Mousectl*);
struct Cursor;
extern void setcursor(Mousectl*, struct Cursor*);
extern void drawgetrect(Rectangle, int);
extern Rectangle getrect(int, Mousectl*);
extern int menuhit(int, Mousectl*, Menu*, Screen*);

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#ifndef _REGEXP9H_
#define _REGEXP9H_ 1
#include <utf.h>
typedef struct Resub Resub;
typedef struct Reclass Reclass;
typedef struct Reinst Reinst;
typedef struct Reprog Reprog;
/*
* Sub expression matches
*/
struct Resub{
union
{
char *sp;
Rune *rsp;
}s;
union
{
char *ep;
Rune *rep;
}e;
};
/*
* character class, each pair of rune's defines a range
*/
struct Reclass{
Rune *end;
Rune spans[64];
};
/*
* Machine instructions
*/
struct Reinst{
int type;
union {
Reclass *cp; /* class pointer */
Rune r; /* character */
int subid; /* sub-expression id for RBRA and LBRA */
Reinst *right; /* right child of OR */
}u1;
union { /* regexp relies on these two being in the same union */
Reinst *left; /* left child of OR */
Reinst *next; /* next instruction for CAT & LBRA */
}u2;
};
/*
* Reprogram definition
*/
struct Reprog{
Reinst *startinst; /* start pc */
Reclass class[16]; /* .data */
Reinst firstinst[5]; /* .text */
};
extern Reprog *regcomp(char*);
extern Reprog *regcomplit(char*);
extern Reprog *regcompnl(char*);
extern void regerror(char*);
extern int regexec(Reprog*, char*, Resub*, int);
extern void regsub(char*, char*, int, Resub*, int);
extern int rregexec(Reprog*, Rune*, Resub*, int);
extern void rregsub(Rune*, Rune*, Resub*, int);
#endif

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#ifndef _THREADH_
#define _THREADH_ 1
/* avoid conflicts with socket library */
#undef send
#define send _threadsend
#undef recv
#define recv _threadrecv
typedef struct Alt Alt;
typedef struct Channel Channel;
typedef struct Ref Ref;
/* Channel structure. S is the size of the buffer. For unbuffered channels
* s is zero. v is an array of s values. If s is zero, v is unused.
* f and n represent the state of the queue pointed to by v.
*/
enum {
Nqwds = 2,
Nqshift = 5, // 2log #of bits in long
Nqmask = - 1,
Nqbits = (1 << Nqshift) * 2,
};
struct Channel {
int s; // Size of the channel (may be zero)
unsigned int f; // Extraction point (insertion pt: (f + n) % s)
unsigned int n; // Number of values in the channel
int e; // Element size
int freed; // Set when channel is being deleted
volatile Alt **qentry; // Receivers/senders waiting (malloc)
volatile int nentry; // # of entries malloc-ed
unsigned char v[1]; // Array of s values in the channel
};
/* Channel operations for alt: */
typedef enum {
CHANEND,
CHANSND,
CHANRCV,
CHANNOP,
CHANNOBLK,
} ChanOp;
struct Alt {
Channel *c; /* channel */
void *v; /* pointer to value */
ChanOp op; /* operation */
/* the next variables are used internally to alt
* they need not be initialized
*/
Channel **tag; /* pointer to rendez-vous tag */
int entryno; /* entry number */
};
struct Ref {
long ref;
};
int alt(Alt alts[]);
Channel* chancreate(int elemsize, int bufsize);
int chaninit(Channel *c, int elemsize, int elemcnt);
void chanfree(Channel *c);
int chanprint(Channel *, char *, ...);
long decref(Ref *r); /* returns 0 iff value is now zero */
void incref(Ref *r);
int nbrecv(Channel *c, void *v);
void* nbrecvp(Channel *c);
unsigned long nbrecvul(Channel *c);
int nbsend(Channel *c, void *v);
int nbsendp(Channel *c, void *v);
int nbsendul(Channel *c, unsigned long v);
int proccreate(void (*f)(void *arg), void *arg, unsigned int stacksize);
int procrfork(void (*f)(void *arg), void *arg, unsigned int stacksize, int flag);
void** procdata(void);
void procexec(Channel *, char *, char *[]);
void procexecl(Channel *, char *, ...);
int recv(Channel *c, void *v);
void* recvp(Channel *c);
unsigned long recvul(Channel *c);
int send(Channel *c, void *v);
int sendp(Channel *c, void *v);
int sendul(Channel *c, unsigned long v);
int threadcreate(void (*f)(void *arg), void *arg, unsigned int stacksize);
void** threaddata(void);
void threadexits(char *);
void threadexitsall(char *);
int threadgetgrp(void); /* return thread group of current thread */
char* threadgetname(void);
void threadint(int); /* interrupt thread */
void threadintgrp(int); /* interrupt threads in grp */
void threadkill(int); /* kill thread */
void threadkillgrp(int); /* kill threads in group */
void threadmain(int argc, char *argv[]);
void threadnonotes(void);
int threadnotify(int (*f)(void*, char*), int in);
int threadid(void);
int threadpid(int);
int threadsetgrp(int); /* set thread group, return old */
void threadsetname(char *name);
Channel* threadwaitchan(void);
int tprivalloc(void);
void tprivfree(int);
void **tprivaddr(int);
void yield(void);
long threadstack(void);
extern int mainstacksize;
/* slave I/O processes */
typedef struct Ioproc Ioproc;
Ioproc* ioproc(void);
void closeioproc(Ioproc*);
void iointerrupt(Ioproc*);
int ioclose(Ioproc*, int);
int iodial(Ioproc*, char*, char*, char*, int*);
int ioopen(Ioproc*, char*, int);
long ioread(Ioproc*, int, void*, long);
long ioreadn(Ioproc*, int, void*, long);
long iowrite(Ioproc*, int, void*, long);
int iosleep(Ioproc*, long);
long iocall(Ioproc*, long (*)(va_list*), ...);
void ioret(Ioproc*, int);
#endif /* _THREADH_ */

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#ifndef _UTFH_
#define _UTFH_ 1
typedef unsigned short Rune; /* 16 bits */
enum
{
UTFmax = 3, /* maximum bytes per rune */
Runesync = 0x80, /* cannot represent part of a UTF sequence (<) */
Runeself = 0x80, /* rune and UTF sequences are the same (<) */
Runeerror = 0x80, /* decoding error in UTF */
};
/*
* rune routines
*/
extern int runetochar(char*, Rune*);
extern int chartorune(Rune*, char*);
extern int runelen(long);
extern int runenlen(Rune*, int);
extern int fullrune(char*, int);
extern int utflen(char*);
extern int utfnlen(char*, long);
extern char* utfrune(char*, long);
extern char* utfrrune(char*, long);
extern char* utfutf(char*, char*);
extern char* utfecpy(char*, char*, char*);
extern Rune* runestrcat(Rune*, Rune*);
extern Rune* runestrchr(Rune*, Rune);
extern int runestrcmp(Rune*, Rune*);
extern Rune* runestrcpy(Rune*, Rune*);
extern Rune* runestrncpy(Rune*, Rune*, long);
extern Rune* runestrecpy(Rune*, Rune*, Rune*);
extern Rune* runestrdup(Rune*);
extern Rune* runestrncat(Rune*, Rune*, long);
extern int runestrncmp(Rune*, Rune*, long);
extern Rune* runestrrchr(Rune*, Rune);
extern long runestrlen(Rune*);
extern Rune* runestrstr(Rune*, Rune*);
extern Rune tolowerrune(Rune);
extern Rune totitlerune(Rune);
extern Rune toupperrune(Rune);
extern int isalpharune(Rune);
extern int islowerrune(Rune);
extern int isspacerune(Rune);
extern int istitlerune(Rune);
extern int isupperrune(Rune);
#endif