// comndef.h  -- general definitions

typedef unsigned char byte;
#define _DEF_BYTE_

typedef enum { false, true } qboolean;

//============================================================================

typedef struct sizebuf_s {
    qboolean allowoverflow;	// if false, do a Sys_Error
    qboolean overflowed;	// set to true if the buffer size failed
    byte *data;
    int maxsize;
    int cursize;
} sizebuf_t;

void SZ_Alloc(sizebuf_t * buf, int startsize);
void SZ_Free(sizebuf_t * buf);
void SZ_Clear(sizebuf_t * buf);
void *SZ_GetSpace(sizebuf_t * buf, int length);
void SZ_Write(sizebuf_t * buf, void *data, int length);
void SZ_Print(sizebuf_t * buf, char *data);	// strcats onto the sizebuf

//============================================================================

typedef struct link_s {
    struct link_s *prev, *next;
} link_t;


void ClearLink(link_t * l);
void RemoveLink(link_t * l);
void InsertLinkBefore(link_t * l, link_t * before);
void InsertLinkAfter(link_t * l, link_t * after);

// (type *)STRUCT_FROM_LINK(link_t *link, type, member)
// ent = STRUCT_FROM_LINK(link,entity_t,order)
// FIXME: remove this mess!
#define	STRUCT_FROM_LINK(l,t,m) ((t *)((byte *)l - (int)&(((t *)0)->m)))

//============================================================================

#ifndef NULL
#define NULL ((void *)0)
#endif

#define Q_MAXCHAR ((char)0x7f)
#define Q_MAXSHORT ((short)0x7fff)
#define Q_MAXINT	((int)0x7fffffff)
#define Q_MAXLONG ((int)0x7fffffff)
#define Q_MAXFLOAT ((int)0x7fffffff)

#define Q_MINCHAR ((char)0x80)
#define Q_MINSHORT ((short)0x8000)
#define Q_MININT 	((int)0x80000000)
#define Q_MINLONG ((int)0x80000000)
#define Q_MINFLOAT ((int)0x7fffffff)

//============================================================================

extern qboolean bigendien;

extern short (*BigShort) (short l);
extern short (*LittleShort) (short l);
extern int (*BigLong) (int l);
extern int (*LittleLong) (int l);
extern float (*BigFloat) (float l);
extern float (*LittleFloat) (float l);

//============================================================================

void MSG_WriteChar(sizebuf_t * sb, int c);
void MSG_WriteByte(sizebuf_t * sb, int c);
void MSG_WriteShort(sizebuf_t * sb, int c);
void MSG_WriteLong(sizebuf_t * sb, int c);
void MSG_WriteFloat(sizebuf_t * sb, float f);
void MSG_WriteString(sizebuf_t * sb, char *s);
void MSG_WriteCoord(sizebuf_t * sb, float f);
void MSG_WriteAngle(sizebuf_t * sb, float f);

extern int msg_readcount;
extern qboolean msg_badread;	// set if a read goes beyond end of message

void MSG_BeginReading(void);
int MSG_ReadChar(void);
int MSG_ReadByte(void);
int MSG_ReadShort(void);
int MSG_ReadLong(void);
float MSG_ReadFloat(void);
char *MSG_ReadString(void);

float MSG_ReadCoord(void);
float MSG_ReadAngle(void);

//============================================================================

void Q_memset(void *dest, int fill, int count);
void Q_memcpy(void *dest, void *src, int count);
int Q_memcmp(void *m1, void *m2, int count);
void Q_strcpy(char *dest, char *src);
void Q_strncpy(char *dest, char *src, int count);
int Q_strlen(char *str);
char *Q_strrchr(char *s, char c);
void Q_strcat(char *dest, char *src);
int Q_strcmp(char *s1, char *s2);
int Q_strncmp(char *s1, char *s2, int count);
int Q_strcasecmp(char *s1, char *s2);
int Q_strncasecmp(char *s1, char *s2, int n);
int Q_atoi(char *str);
float Q_atof(char *str);

//============================================================================

extern char com_token[1024];
extern qboolean com_eof;

char *COM_Parse(char *data);


extern int com_argc;
extern char **com_argv;

int COM_CheckParm(char *parm);
void COM_Init(char *path);
void COM_InitArgv(int argc, char **argv);

char *COM_SkipPath(char *pathname);
void COM_StripExtension(char *in, char *out);
void COM_FileBase(char *in, char *out);
void COM_DefaultExtension(char *path, char *extension);

char *va(char *format, ...);
// does a varargs printf into a temp buffer


//============================================================================

extern int com_filesize;
struct cache_user_s;

extern char com_gamedir[MAX_OSPATH];

void COM_WriteFile(char *filename, void *data, int len);
int COM_OpenFile(char *filename, int *hndl);
int COM_FOpenFile(char *filename, FILE ** file);
void COM_CloseFile(int h);

byte *COM_LoadStackFile(char *path, void *buffer, int bufsize);
byte *COM_LoadTempFile(char *path);
byte *COM_LoadHunkFile(char *path);
void COM_LoadCacheFile(char *path, struct cache_user_s *cu);


extern struct cvar_s registered;