/*

* << Haru Free PDF Library 2.0.3 >> -- hpdf_streams.h

*

* Copyright (c) 1999-2004 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>

*

* Permission to use, copy, modify, distribute and sell this software

* and its documentation for any purpose is hereby granted without fee,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* It is provided "as is" without express or implied warranty.

*

* 2005.12.20 Created.

*

*/

#ifndef _HPDF_STREAMS_H

#define _HPDF_STREAMS_H

#include "hpdf_list.h"

#include "hpdf_encrypt.h"

#ifdef __cplusplus

extern "C" {

#endif

#define HPDF_STREAM_SIG_BYTES 0x5354524DL

typedef enum _HPDF_StreamType {

HPDF_STREAM_UNKNOWN = 0,

HPDF_STREAM_CALLBACK,

HPDF_STREAM_FILE,

HPDF_STREAM_MEMORY,

} HPDF_StreamType;

#define HPDF_STREAM_FILTER_NONE 0x0000

#define HPDF_STREAM_FILTER_ASCIIHEX 0x0100

#define HPDF_STREAM_FILTER_ASCII85 0x0200

#define HPDF_STREAM_FILTER_FLATE_DECODE 0x0400

#define HPDF_STREAM_FILTER_DCT_DECODE 0x0800

typedef enum _HPDF_WhenceMode {

HPDF_SEEK_SET = 0,

HPDF_SEEK_CUR,

HPDF_SEEK_END

} HPDF_WhenceMode;

typedef struct _HPDF_Stream_Rec *HPDF_Stream;

typedef HPDF_STATUS

(*HPDF_Stream_Write_Func) (HPDF_Stream stream,

const HPDF_BYTE *ptr,

HPDF_UINT siz);

typedef HPDF_STATUS

(*HPDF_Stream_Read_Func) (HPDF_Stream stream,

HPDF_BYTE *ptr,

HPDF_UINT *siz);

typedef HPDF_STATUS

(*HPDF_Stream_Seek_Func) (HPDF_Stream stream,

HPDF_INT pos,

HPDF_WhenceMode mode);

typedef HPDF_INT32

(*HPDF_Stream_Tell_Func) (HPDF_Stream stream);

typedef void

(*HPDF_Stream_Free_Func) (HPDF_Stream stream);

typedef HPDF_UINT32

(*HPDF_Stream_Size_Func) (HPDF_Stream stream);

typedef struct _HPDF_MemStreamAttr_Rec *HPDF_MemStreamAttr;

typedef struct _HPDF_MemStreamAttr_Rec {

HPDF_List buf;

HPDF_UINT buf_siz;

HPDF_UINT w_pos;

HPDF_BYTE *w_ptr;

HPDF_UINT r_ptr_idx;

HPDF_UINT r_pos;

HPDF_BYTE *r_ptr;

} HPDF_MemStreamAttr_Rec;

typedef struct _HPDF_Stream_Rec {

HPDF_UINT32 sig_bytes;

HPDF_StreamType type;

HPDF_MMgr mmgr;

HPDF_Error error;

HPDF_UINT size;

HPDF_Stream_Write_Func write_fn;

HPDF_Stream_Read_Func read_fn;

HPDF_Stream_Seek_Func seek_fn;

HPDF_Stream_Free_Func free_fn;

HPDF_Stream_Tell_Func tell_fn;

HPDF_Stream_Size_Func size_fn;

void* attr;

} HPDF_Stream_Rec;

HPDF_Stream

HPDF_MemStream_New (HPDF_MMgr mmgr,

HPDF_UINT buf_siz);

HPDF_BYTE*

HPDF_MemStream_GetBufPtr (HPDF_Stream stream,

HPDF_UINT index,

HPDF_UINT *length);

HPDF_UINT

HPDF_MemStream_GetBufSize (HPDF_Stream stream);

HPDF_UINT

HPDF_MemStream_GetBufCount (HPDF_Stream stream);

HPDF_STATUS

HPDF_MemStream_Rewrite (HPDF_Stream stream,

HPDF_BYTE *buf,

HPDF_UINT size);

void

HPDF_MemStream_FreeData (HPDF_Stream stream);

HPDF_STATUS

HPDF_Stream_WriteToStream (HPDF_Stream src,

HPDF_Stream dst,

HPDF_UINT filter,

HPDF_Encrypt e);

HPDF_Stream

HPDF_FileReader_New (HPDF_MMgr mmgr,

const char *fname);

HPDF_Stream

HPDF_FileWriter_New (HPDF_MMgr mmgr,

const char *fname);

HPDF_Stream

HPDF_CallbackReader_New (HPDF_MMgr mmgr,

HPDF_Stream_Read_Func read_fn,

HPDF_Stream_Seek_Func seek_fn,

HPDF_Stream_Tell_Func tell_fn,

HPDF_Stream_Size_Func size_fn,

void* data);

HPDF_Stream

HPDF_CallbackWriter_New (HPDF_MMgr mmgr,

HPDF_Stream_Write_Func write_fn,

void* data);

void

HPDF_Stream_Free (HPDF_Stream stream);

HPDF_STATUS

HPDF_Stream_WriteChar (HPDF_Stream stream,

char value);

HPDF_STATUS

HPDF_Stream_WriteStr (HPDF_Stream stream,

const char *value);

HPDF_STATUS

HPDF_Stream_WriteUChar (HPDF_Stream stream,

HPDF_BYTE value);

HPDF_STATUS

HPDF_Stream_WriteInt (HPDF_Stream stream,

HPDF_INT value);

HPDF_STATUS

HPDF_Stream_WriteUInt (HPDF_Stream stream,

HPDF_UINT value);

HPDF_STATUS

HPDF_Stream_WriteReal (HPDF_Stream stream,

HPDF_REAL value);

HPDF_STATUS

HPDF_Stream_Write (HPDF_Stream stream,

const HPDF_BYTE *ptr,

HPDF_UINT size);

HPDF_STATUS

HPDF_Stream_Read (HPDF_Stream stream,

HPDF_BYTE *ptr,

HPDF_UINT *size);

HPDF_STATUS

HPDF_Stream_ReadLn (HPDF_Stream stream,

char *s,

HPDF_UINT *size);

HPDF_INT32

HPDF_Stream_Tell (HPDF_Stream stream);

HPDF_STATUS

HPDF_Stream_Seek (HPDF_Stream stream,

HPDF_INT pos,

HPDF_WhenceMode mode);

HPDF_BOOL

HPDF_Stream_EOF (HPDF_Stream stream);

HPDF_UINT32

HPDF_Stream_Size (HPDF_Stream stream);

HPDF_STATUS

HPDF_Stream_Flush (HPDF_Stream stream);

HPDF_STATUS

HPDF_Stream_WriteEscapeName (HPDF_Stream stream,

const char *value);

HPDF_STATUS

HPDF_Stream_WriteEscapeText2 (HPDF_Stream stream,

const char *text,

HPDF_UINT len);

HPDF_STATUS

HPDF_Stream_WriteEscapeText (HPDF_Stream stream,

const char *text);

HPDF_STATUS

HPDF_Stream_WriteBinary (HPDF_Stream stream,

const HPDF_BYTE *data,

HPDF_UINT len,

HPDF_Encrypt e);

HPDF_STATUS

HPDF_Stream_Validate (HPDF_Stream stream);

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* _HPDF_STREAMS_H */