#include <bio.h>#include <mp.h>#include <libsec.h>#include <flate.h>#include <regexp.h> typedef struct Hash	Hash;typedef struct Cinfo	Cinfo;typedef struct Tinfo	Tinfo;typedef struct Object	Object;typedef struct Objset	Objset;typedef struct Pack	Pack;typedef struct Buf	Buf;typedef struct Dirent	Dirent;typedef struct Idxent	Idxent;typedef struct Ols	Ols; enum {	/* 5k objects should be enough */	Cachemax=5*1024,	Pathmax=512,	Hashsz=20, 	Nproto	= 16,	Nport	= 16,	Nhost	= 256,	Npath	= 128,	Nrepo	= 64,	Nbranch	= 32,}; typedef enum Type {	GNone	= 0,	GCommit	= 1,	GTree	= 2,	GBlob	= 3,	GTag	= 4,	GOdelta	= 6,	GRdelta	= 7,} Type; enum {	Cloaded	= 1 << 0,	Cidx	= 1 << 1,	Ccache	= 1 << 2,	Cexist	= 1 << 3,	Cparsed	= 1 << 5,}; struct Ols {	int idx; 	int fd;	int state;	int stage; 	Dir *top;	int ntop;	int topidx;	Dir *loose;	int nloose;	int looseidx;	Dir *pack;	int npack;	int packidx;	int nent;	int entidx;}; struct Hash {	uchar h[20];}; struct Dirent {	char *name;	int modref;	int mode;	Hash h;}; struct Object {	/* Git data */	Hash	hash;	Type	type; 	/* Cache */	int	id;	int	flag;	int	refs;	Object	*next;	Object	*prev; 	/* For indexing */	vlong	off;	vlong	len;	u32int	crc; 	/* Everything below here gets cleared */	char	*all;	char	*data;	/* size excludes header */	vlong	size; 	union {		Cinfo *commit;		Tinfo *tree;	};}; struct Tinfo {	/* Tree */	Dirent	*ent;	int	nent;}; struct Cinfo {	/* Commit */	Hash	*parent;	int	nparent;	Hash	tree;	char	*author;	char	*committer;	char	*msg;	int	nmsg;	vlong	ctime;	vlong	mtime;}; struct Objset {	Object	**obj;	int	nobj;	int	sz;}; #define GETBE16(b)\		((((b)[0] & 0xFFul) <<  8) | \		 (((b)[1] & 0xFFul) <<  0)) #define GETBE32(b)\		((((b)[0] & 0xFFul) << 24) | \		 (((b)[1] & 0xFFul) << 16) | \		 (((b)[2] & 0xFFul) <<  8) | \		 (((b)[3] & 0xFFul) <<  0))#define GETBE64(b)\		((((b)[0] & 0xFFull) << 56) | \		 (((b)[1] & 0xFFull) << 48) | \		 (((b)[2] & 0xFFull) << 40) | \		 (((b)[3] & 0xFFull) << 32) | \		 (((b)[4] & 0xFFull) << 24) | \		 (((b)[5] & 0xFFull) << 16) | \		 (((b)[6] & 0xFFull) <<  8) | \		 (((b)[7] & 0xFFull) <<  0)) #define PUTBE16(b, n)\	do{ \		(b)[0] = (n) >> 8; \		(b)[1] = (n) >> 0; \	} while(0) #define PUTBE32(b, n)\	do{ \		(b)[0] = (n) >> 24; \		(b)[1] = (n) >> 16; \		(b)[2] = (n) >> 8; \		(b)[3] = (n) >> 0; \	} while(0) #define PUTBE64(b, n)\	do{ \		(b)[0] = (n) >> 56; \		(b)[1] = (n) >> 48; \		(b)[2] = (n) >> 40; \		(b)[3] = (n) >> 32; \		(b)[4] = (n) >> 24; \		(b)[5] = (n) >> 16; \		(b)[6] = (n) >> 8; \		(b)[7] = (n) >> 0; \	} while(0) #define QDIR(qid)	((int)(qid)->path & (0xff))#define QPATH(id, dt)	(((uvlong)(id) << 8) | ((dt) & 0x7f))#define isblank(c) \	(((c) != '\n') && isspace(c)) extern Reprog *authorpat;extern Objset objcache;extern Hash Zhash;extern int chattygit; #pragma varargck type "H" Hash#pragma varargck type "T" Type#pragma varargck type "O" Object*#pragma varargck type "Q" Qidint Hfmt(Fmt*);int Tfmt(Fmt*);int Ofmt(Fmt*);int Qfmt(Fmt*); void gitinit(void); /* object io */int	resolverefs(Hash **, char *);int	resolveref(Hash *, char *);Object	*ancestor(Object *, Object *);Object	*readobject(Hash);void	parseobject(Object *);int	indexpack(char *, char *, Hash);int	hasheq(Hash *, Hash *);Object	*ref(Object *);void	unref(Object *);void	cache(Object *); /* object sets */void	osinit(Objset *);void	osadd(Objset *, Object *);int	oshas(Objset *, Object *);Object	*osfind(Objset *, Hash); /* object listing */Ols	*mkols(void);int	olsnext(Ols *, Hash *);void	olsfree(Ols *); /* util functions */void	*emalloc(ulong);void	*erealloc(void *, ulong);char	*estrdup(char *);int	slurpdir(char *, Dir **);int	hparse(Hash *, char *);int	hassuffix(char *, char *);int	swapsuffix(char *, int, char *, char *, char *);char	*strip(char *);void	die(char *, ...); /* proto handling */int	readpkt(int, char*, int);int	writepkt(int, char*, int);int	flushpkt(int);int	parseuri(char *, char *, char *, char *, char *, char *);int	dialssh(char *, char *, char *, char *);int	dialgit(char *, char *, char *, char *);