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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __nsMsgBodyHandler_h
#define __nsMsgBodyHandler_h
#include "nsIMsgSearchScopeTerm.h"
#include "nsILineInputStream.h"
#include "nsIMsgDatabase.h"
//---------------------------------------------------------------------------
// nsMsgBodyHandler: used to retrieve lines from POP and IMAP offline messages.
// This is a helper class used by nsMsgSearchTerm::MatchBody
//---------------------------------------------------------------------------
class nsMsgBodyHandler
{
public:
nsMsgBodyHandler (nsIMsgSearchScopeTerm *,
uint32_t length,
nsIMsgDBHdr * msg,
nsIMsgDatabase * db);
// we can also create a body handler when doing arbitrary header
// filtering...we need the list of headers and the header size as well
// if we are doing filtering...if ForFilters is false, headers and
// headersSize is ignored!!!
nsMsgBodyHandler (nsIMsgSearchScopeTerm *,
uint32_t length, nsIMsgDBHdr * msg, nsIMsgDatabase * db,
const char * headers /* NULL terminated list of headers */,
uint32_t headersSize, bool ForFilters);
virtual ~nsMsgBodyHandler();
// Returns next message line in buf and the applicable charset, if found.
// The return value is the length of 'buf' or -1 for EOF.
int32_t GetNextLine(nsCString &buf, nsCString &charset);
// Transformations
void SetStripHtml (bool strip) { m_stripHtml = strip; }
void SetStripHeaders (bool strip) { m_stripHeaders = strip; }
protected:
void Initialize(); // common initialization code
// filter related methods. For filtering we always use the headers
// list instead of the database...
bool m_Filtering;
int32_t GetNextFilterLine(nsCString &buf);
// pointer into the headers list in the original message hdr db...
const char * m_headers;
uint32_t m_headersSize;
uint32_t m_headerBytesRead;
// local / POP related methods
void OpenLocalFolder();
// goes through the mail folder
int32_t GetNextLocalLine(nsCString &buf);
nsIMsgSearchScopeTerm *m_scope;
nsCOMPtr <nsILineInputStream> m_fileLineStream;
nsCOMPtr <nsIFile> m_localFile;
/**
* The number of lines in the message. If |m_lineCountInBodyLines| then this
* is the number of body lines, otherwise this is the entire number of lines
* in the message. This is important so we know when to stop reading the file
* without accidentally reading part of the next message.
*/
uint32_t m_numLocalLines;
/**
* When true, |m_numLocalLines| is the number of body lines in the message,
* when false it is the entire number of lines in the message.
*
* When a message is an offline IMAP or news message, then the number of lines
* will be the entire number of lines, so this should be false. When the
* message is a local message, the number of lines will be the number of body
* lines.
*/
bool m_lineCountInBodyLines;
// Offline IMAP related methods & state
nsCOMPtr<nsIMsgDBHdr> m_msgHdr;
nsCOMPtr<nsIMsgDatabase> m_db;
// Transformations
// With the exception of m_isMultipart, these all apply to the various parts
bool m_stripHeaders; // true if we're supposed to strip of message headers
bool m_stripHtml; // true if we're supposed to strip off HTML tags
bool m_pastMsgHeaders; // true if we've already skipped over the message headers
bool m_pastPartHeaders; // true if we've already skipped over the part headers
bool m_partIsHtml; // true if the Content-type header claims text/html
bool m_base64part; // true if the current part is in base64
bool m_isMultipart; // true if the message is a multipart/* message
bool m_partIsText; // true if the current part is text/*
bool m_inMessageAttachment; // true if current part is message/*
nsTArray<nsCString> m_boundaries; // The boundary strings to look for
nsCString m_partCharset; // The charset found in the part
// See implementation for comments
int32_t ApplyTransformations (const nsCString &line, int32_t length,
bool &returnThisLine, nsCString &buf);
void SniffPossibleMIMEHeader (const nsCString &line);
static void StripHtml (nsCString &buf);
static void Base64Decode (nsCString &buf);
};
#endif
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