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416 lines
10 KiB
C
416 lines
10 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/*
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**
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** Binhex_stream.c
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** ---------------
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**
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** The code for the binhex encode/decode stream.
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**
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** 20sep95 mym Created.
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**
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*/
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#include "msg.h"
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#include "appledbl.h"
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#include "m_binhex.h"
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#include "m_cvstrm.h"
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#include "ad_codes.h"
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#ifdef XP_MAC
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#pragma warn_unusedarg off
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#endif /* XP_MAC */
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/*
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** -----------------------------------------------------------
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**
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** The BinHex encode writer stream.
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**
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** -----------------------------------------------------------
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*/
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extern int MK_MIME_ERROR_WRITING_FILE;
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#define WORKING_BUFF_SIZE 8192
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typedef struct
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{
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binhex_encode_object bh_encode_obj;
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char *buff; /* the working buff */
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int32 s_buff; /* the size of workiong buff. */
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XP_File fp;
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char *fname; /* the filename for file holding the encoding */
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} BinHexEncodeObject ;
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/*
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** Let's go "l" characters forward of the encoding for this write.
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** Note:
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** "s" is just a dummy paramter.
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*/
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PRIVATE int net_BinHex_Encode_Write (void *dataObject, const char* s, int32 l)
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{
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int status = 0;
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BinHexEncodeObject * obj = (BinHexEncodeObject*)dataObject;
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int32 count;
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int32 size;
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do
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{
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size = obj->s_buff * 11 / 16;
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size = MIN(l, size);
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status = binhex_encode_next(&(obj->bh_encode_obj),
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(char*)s,
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size,
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obj->buff,
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obj->s_buff,
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&count);
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if (status == NOERR || status == errDone)
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{
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/*
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* we get the encode data, so call the next stream to write it to the disk.
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*/
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if ((int) XP_FileWrite(obj->buff, count, obj->fp) != count )
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return errFileWrite;
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}
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if (status < 0) /* abort */
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break;
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l -= size;
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s += size;
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} while (l > 0);
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return status;
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}
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PRIVATE unsigned int net_BinHex_Encode_Ready (NET_StreamClass *dataObject)
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{
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return(MAX_WRITE_READY); /* always ready for writing */
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}
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PRIVATE void net_BinHex_Encode_Complete (void *dataObject)
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{
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int32 count, len = 0;
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BinHexEncodeObject *obj = (BinHexEncodeObject *)dataObject;
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/*
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** push the close part.
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*/
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len = binhex_encode_next(&(obj->bh_encode_obj),
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NULL,
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0,
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obj->buff,
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obj->s_buff,
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&count); /* this help us generate the finishing */
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len = XP_FileWrite(obj->buff, count, obj->fp);
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/*
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** time to do some dirty work -- fix the real file size.
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** (since we can only know by now)
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*/
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binhex_reencode_head(&(obj->bh_encode_obj),
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obj->buff,
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obj->s_buff,
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&count); /* get the head part encoded again */
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XP_FileSeek(obj->fp, 0L, SEEK_SET); /* and override the previous dummy */
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XP_FileWrite(obj->buff, count, obj->fp);
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binhex_encode_end(&(obj->bh_encode_obj), FALSE); /* now we get a real ending */
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if (obj->fp)
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{
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XP_FileClose(obj->fp); /* we are done with the target file */
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FREEIF(obj->fname); /* free the space for the file name */
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}
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FREEIF(obj->buff); /* and free the working buff. */
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XP_FREE(obj);
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}
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PRIVATE void net_BinHex_Encode_Abort (void *dataObject, int status)
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{
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BinHexEncodeObject * obj = (BinHexEncodeObject*)dataObject;
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binhex_encode_end(&(obj->bh_encode_obj), TRUE); /* it is an aborting exist... */
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if (obj->fp)
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{
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XP_FileClose(obj->fp); /* we are aboring with the decoding */
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XP_FileRemove(obj->fname, xpURL);
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/* remove the incomplete file. */
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FREEIF (obj->fname); /* free the space for the file name */
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}
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FREEIF(obj->buff); /* free the working buff. */
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XP_FREE(obj);
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}
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/*
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** Will create a apple double encode stream:
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**
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** -> take the filename as the input source (it needs to be a mac file.)
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** -> tkae a stream to take care of the writing to a temp file.
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*/
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PUBLIC NET_StreamClass *
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fe_MakeBinHexEncodeStream (int format_out,
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void *data_obj,
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URL_Struct *URL_s,
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MWContext *window_id,
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char* dst_filename )
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{
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BinHexEncodeObject* obj;
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NET_StreamClass* stream;
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char* working_buff = NULL;
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int bSize = WORKING_BUFF_SIZE;
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TRACEMSG(("Setting up apple encode stream. Have URL: %s\n", URL_s->address));
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stream = XP_NEW(NET_StreamClass);
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if(stream == NULL)
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return(NULL);
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obj = XP_NEW(BinHexEncodeObject);
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if (obj == NULL)
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{
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XP_FREE (stream);
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return(NULL);
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}
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while (!working_buff && (bSize >= 512))
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{
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working_buff = (char *)XP_ALLOC(bSize);
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if (!working_buff)
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bSize /= 2;
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}
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if (working_buff == NULL)
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{
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XP_FREE (obj);
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XP_FREE (stream);
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return (NULL);
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}
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stream->name = "BinHex Encode";
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stream->complete = (MKStreamCompleteFunc) net_BinHex_Encode_Complete;
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stream->abort = (MKStreamAbortFunc) net_BinHex_Encode_Abort;
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stream->put_block = (MKStreamWriteFunc) net_BinHex_Encode_Write;
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stream->is_write_ready = (MKStreamWriteReadyFunc) net_BinHex_Encode_Ready;
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stream->data_object = obj; /* document info object */
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stream->window_id = window_id;
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obj->fname = XP_STRDUP(dst_filename);
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obj->fp = XP_FileOpen(obj->fname, xpURL, XP_FILE_TRUNCATE);
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/* this file will hold all the encoded data */
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if (obj->fp == NULL)
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{
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XP_FREE(working_buff); /* if we can't open the target file, roll back then */
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if(obj->fname) XP_FREE(obj->fname);
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XP_FREE (obj);
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XP_FREE (stream);
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return (NULL);
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}
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obj->buff = working_buff;
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obj->s_buff = WORKING_BUFF_SIZE;
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/*
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** setup all the need information on the apple double encoder.
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*/
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binhex_encode_init(&(obj->bh_encode_obj)); /* pass the file name of the source.*/
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TRACEMSG(("Returning stream from NET_BinHexEncoder\n"));
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return stream;
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}
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/*
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** -----------------------------------------------------------
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**
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** The BinHex decode writer stream.
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**
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** -----------------------------------------------------------
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*/
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typedef struct BinHexDecodeObject
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{
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binhex_decode_object bh_decode_obj;
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char* in_buff;
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int32 bytes_in_buff;
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} BinHexDecodeObject;
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PRIVATE int
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net_BinHex_Decode_Write (
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void *dataObject, const char* s, int32 l)
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{
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int status = NOERR;
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BinHexDecodeObject * obj = (BinHexDecodeObject*)dataObject;
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int32 size;
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if (obj->bytes_in_buff + l > 1024)
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{
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size = 1024 - obj->bytes_in_buff;
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XP_MEMCPY(obj->in_buff+obj->bytes_in_buff,
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s,
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size);
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s += size;
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l -= size;
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status = binhex_decode_next(&(obj->bh_decode_obj),
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obj->in_buff,
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1024);
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if (status != NOERR)
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return status;
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obj->bytes_in_buff = 0;
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}
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if (l > 1024)
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{
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/* we are sure that obj->bytes_in_buff == 0 at this point. */
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status = binhex_decode_next(&(obj->bh_decode_obj),
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s,
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l);
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}
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else
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{
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XP_MEMCPY(obj->in_buff+obj->bytes_in_buff,
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s,
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l);
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obj->bytes_in_buff += l;
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}
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return status;
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}
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/*
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* is the stream ready for writeing?
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*/
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PRIVATE unsigned int net_BinHex_Decode_Ready (void *stream)
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{
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return(MAX_WRITE_READY); /* always ready for writing */
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}
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PRIVATE void net_BinHex_Decode_Complete (void *dataObject)
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{
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BinHexDecodeObject *obj = (BinHexDecodeObject *) dataObject;
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if (obj->bytes_in_buff)
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{
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/* do the last calls. */
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binhex_decode_next(&(obj->bh_decode_obj),
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(char *)obj->in_buff,
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obj->bytes_in_buff);
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obj->bytes_in_buff = 0;
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}
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binhex_decode_end(&(obj->bh_decode_obj), FALSE); /* it is a normal clean up classes. */
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if (obj->in_buff)
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XP_FREE(obj->in_buff);
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XP_FREE(obj);
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}
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PRIVATE void net_BinHex_Decode_Abort (void *dataObject, int status)
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{
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BinHexDecodeObject *obj = (BinHexDecodeObject *)dataObject;
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binhex_decode_end(&(obj->bh_decode_obj), TRUE); /* it is an abort. */
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if (obj->in_buff)
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XP_FREE(obj->in_buff);
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XP_FREE(obj);
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}
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/*
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** Create the bin hex decode stream.
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**
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*/
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PUBLIC NET_StreamClass *
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fe_MakeBinHexDecodeStream (int format_out,
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void *data_obj,
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URL_Struct *URL_s,
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MWContext *window_id )
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{
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BinHexDecodeObject* obj;
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NET_StreamClass* stream;
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TRACEMSG(("Setting up bin hex decode stream. Have URL: %s\n", URL_s->address));
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stream = XP_NEW(NET_StreamClass);
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if(stream == NULL)
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return(NULL);
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obj = XP_NEW(BinHexDecodeObject);
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if (obj == NULL)
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{
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XP_FREE(stream);
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return(NULL);
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}
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if ((obj->in_buff = (char *)XP_ALLOC(1024)) == NULL)
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{
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XP_FREE(obj);
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XP_FREE(stream);
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return (NULL);
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}
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stream->name = "BinHex Decoder";
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stream->complete = (MKStreamCompleteFunc) net_BinHex_Decode_Complete;
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stream->abort = (MKStreamAbortFunc) net_BinHex_Decode_Abort;
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stream->put_block = (MKStreamWriteFunc) net_BinHex_Decode_Write;
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stream->is_write_ready = (MKStreamWriteReadyFunc) net_BinHex_Decode_Ready;
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stream->data_object = obj;
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stream->window_id = window_id;
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/*
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** Some initial to the object.
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*/
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obj->bytes_in_buff = 0;
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/*
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** setup all the need information on the apple double encoder.
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*/
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binhex_decode_init(&(obj->bh_decode_obj),window_id);
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#ifdef XP_MAC
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obj->bh_decode_obj.mSpec = (FSSpec*)( URL_s->fe_data );
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#endif
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TRACEMSG(("Returning stream from NET_BinHexDecode\n"));
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return stream;
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}
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