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loongoffice/include/tools/inetmime.hxx
Chr. Rossmanith 2c9d68ff56 move INetContentTypes::scan() to INetMIME::scanContentType() 
to avoid circular dependencies between svl and tools when using
INetContentType::scan functionality for future handling of data urls in
urlobj.cxx

Change-Id: Iad13286769e8906aebf8208e4f532151ff2f3d13
Signed-off-by: Stephan Bergmann <sbergman@redhat.com>
2014-05-09 16:01:30 +02:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_TOOLS_INETMIME_HXX
#define INCLUDED_TOOLS_INETMIME_HXX
#include <boost/ptr_container/ptr_vector.hpp>
#include <tools/toolsdllapi.h>
#include <rtl/alloc.h>
#include <rtl/character.hxx>
#include <rtl/string.hxx>
#include <rtl/strbuf.hxx>
#include <rtl/ustring.hxx>
#include <rtl/tencinfo.h>
#include <tools/debug.hxx>
#include <tools/errcode.hxx>
class DateTime;
class INetContentTypeParameterList;
class INetMIMECharsetList_Impl;
class INetMIMEOutputSink;
class TOOLS_DLLPUBLIC INetMIME
{
public:
enum { SOFT_LINE_LENGTH_LIMIT = 76,
HARD_LINE_LENGTH_LIMIT = 998 };
/** The various types of message header field bodies, with respect to
encoding and decoding them.
@descr At the moment, five different types of header fields suffice
to describe how to encoded and decode any known message header field
body, but need for more types may arise in the future as new header
fields are introduced.
@descr The following is an exhaustive list of all the header fields
currently known to our implementation. For every header field, it
includes a 'canonic' (with regard to capitalization) name, a grammar
rule for the body (using RFC 822 and RFC 2234 conventions), a list of
relevant sources of information, and the HeaderFieldType value to use
with that header field. The list is based on RFC 2076 and draft-
palme-mailext-headers-02.txt (see also <http://www.dsv.su.se/~jpalme/
ietf/jp-ietf-home.html#anchor1003783>).
Approved: address ;RFC 1036; HEADER_FIELD_ADDRESS
bcc: #address ;RFCs 822, 2047; HEADER_FIELD_ADDRESS
cc: 1#address ;RFCs 822, 2047; HEADER_FIELD_ADDRESS
Comments: *text ;RFCs 822, RFC 2047; HEADER_FIELD_TEXT
Content-Base: absoluteURI ;RFC 2110; HEADER_FIELD_TEXT
Content-Description: *text ;RFC 2045, RFC 2047; HEADER_FIELD_TEXT
Content-Disposition: disposition-type *(";" disposition-parm)
;RFC 1806; HEADER_FIELD_STRUCTURED
Content-ID: msg-id ;RFC 2045, RFC 2047; HEADER_FIELD_MESSAGE_ID
Content-Location: absoluteURI / relativeURI ;RFC 2110;
HEADER_FIELD_TEXT
Content-Transfer-Encoding: mechanism ;RFC 2045, RFC 2047;
HEADER_FIELD_STRUCTURED
Content-Type: type "/" subtype *(";" parameter) ;RFC 2045, RFC 2047;
HEADER_FIELD_STRUCTURED
Control: *text ;RFC 1036; HEADER_FIELD_TEXT
Date: date-time ;RFC 822, RFC 1123, RFC 2047; HEADER_FIELD_STRUCTURED
Distribution: 1#atom ;RFC 1036; HEADER_FIELD_STRUCTURED
Encrypted: 1#2word ;RFC 822, RFC 2047; HEADER_FIELD_STRUCTURED
Expires: date-time ;RFC 1036; HEADER_FIELD_STRUCTURED
Followup-To: 1#(atom *("." atom)) ;RFC 1036; HEADER_FIELD_STRUCTURED
From: mailbox / 1#mailbox ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
In-Reply-To: *(phrase / msg-id) ;RFC 822, RFC 2047;
HEADER_FIELD_ADDRESS
Keywords: #phrase ;RFC 822, RFC 2047; HEADER_FIELD_PHRASE
MIME-Version: 1*DIGIT "." 1*DIGIT ;RFC 2045, RFC 2047;
HEADER_FIELD_STRUCTURED
Message-ID: msg-id ;RFC 822, RFC 2047; HEADER_FIELD_MESSAGE_ID
Newsgroups: 1#(atom *("." atom)) ;RFC 1036, RFC 2047;
HEADER_FIELD_STRUCTURED
Organization: *text ;RFC 1036; HEADER_FIELD_TEXT
Received: ["from" domain] ["by" domain] ["via" atom] *("with" atom)
["id" msg-id] ["for" addr-spec] ";" date-time ;RFC 822, RFC 1123,
RFC 2047; HEADER_FIELD_STRUCTURED
References: *(phrase / msg-id) ;RFC 822, RFC 2047;
HEADER_FIELD_ADDRESS
Reply-To: 1#address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Resent-Date: date-time ;RFC 822, RFC 1123, RFC 2047;
HEADER_FIELD_STRUCTURED
Resent-From: mailbox / 1#mailbox ;RFC 822, RFC 2047;
HEADER_FIELD_ADDRESS
Resent-Message-ID: msg-id ;RFC 822, RFC 2047; HEADER_FIELD_MESSAGE_ID
Resent-Reply-To: 1#address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Resent-Sender: mailbox ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Resent-To: 1#address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Resent-bcc: #address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Resent-cc: 1#address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Return-path: route-addr / ("<" ">") ;RFC 822, RFC 1123, RFC 2047;
HEADER_FIELD_STRUCTURED
Return-Receipt-To: address ;Not Internet standard;
HEADER_FIELD_ADDRES
Sender: mailbox ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
Subject: *text ;RFC 822, RFC 2047; HEADER_FIELD_TEXT
Summary: *text ;RFC 1036; HEADER_FIELD_TEXT
To: 1#address ;RFC 822, RFC 2047; HEADER_FIELD_ADDRESS
X-CHAOS-Marked: "YES" / "NO" ;local; HEADER_FIELD_STRUCTURED
X-CHAOS-Read: "YES" / "NO" ;local; HEADER_FIELD_STRUCTURED
X-CHAOS-Recipients: #*("<" atom word ">") ;local;
HEADER_FIELD_STRUCTURED
X-CHAOS-Size: 1*DIGIT ;local; HEADER_FIELD_STRUCTURED
X-Mailer: *text ;Not Internet standard; HEADER_FIELD_TEXT
X-Mozilla-Status: 4HEXDIG ;Mozilla; HEADER_FIELD_STRUCTURED
X-Newsreader: *text ;Not Internet standard; HEADER_FIELD_TEXT
X-Priority: "1" / "2" / "3" / "4" / "5" ;Not Internet standard;
HEADER_FIELD_STRUCTURED
Xref: sub-domain
1*((atom / string) *("." (atom / string)) ":" msg-number)
;RFCs 1036, 2047, local; HEADER_FIELD_STRUCTURED
*/
enum HeaderFieldType
{
HEADER_FIELD_TEXT,
HEADER_FIELD_STRUCTURED,
HEADER_FIELD_PHRASE,
HEADER_FIELD_MESSAGE_ID,
HEADER_FIELD_ADDRESS
};
/** Check for ISO 8859-1 character.
@param nChar Some UCS-4 character.
@return True if nChar is a ISO 8859-1 character (0x00--0xFF).
*/
static inline bool isISO88591(sal_uInt32 nChar);
/** Check for US-ASCII control character.
@param nChar Some UCS-4 character.
@return True if nChar is a US-ASCII control character (US-ASCII
0x00--0x1F or 0x7F).
*/
static inline bool isControl(sal_uInt32 nChar);
/** Check for US-ASCII white space character.
@param nChar Some UCS-4 character.
@return True if nChar is a US-ASCII white space character (US-ASCII
0x09 or 0x20).
*/
static inline bool isWhiteSpace(sal_uInt32 nChar);
/** Check for US-ASCII visible character.
@param nChar Some UCS-4 character.
@return True if nChar is a US-ASCII visible character (US-ASCII
0x21--0x7E).
*/
static inline bool isVisible(sal_uInt32 nChar);
/** Check for US-ASCII Base 64 digit character.
@param nChar Some UCS-4 character.
@return True if nChar is a US-ASCII Base 64 digit character (US-ASCII
'A'--'Z', 'a'--'z', '0'--'9', '+', or '/').
*/
static inline bool isBase64Digit(sal_uInt32 nChar);
/** Check whether some character is valid within an RFC 822 <atom>.
@param nChar Some UCS-4 character.
@return True if nChar is valid within an RFC 822 <atom> (US-ASCII
'A'--'Z', 'a'--'z', '0'--'9', '!', '#', '$', '%', '&', ''', '*', '+',
'-', '/', '=', '?', '^', '_', '`', '{', '|', '}', or '~').
*/
static bool isAtomChar(sal_uInt32 nChar);
/** Check whether some character is valid within an RFC 2045 <token>.
@param nChar Some UCS-4 character.
@return True if nChar is valid within an RFC 2047 <token> (US-ASCII
'A'--'Z', 'a'--'z', '0'--'9', '!', '#', '$', '%', '&', ''', '*', '+',
'-', '.', '^', '_', '`', '{', '|', '}', or '~').
*/
static bool isTokenChar(sal_uInt32 nChar);
/** Check whether some character is valid within an RFC 2047 <token>.
@param nChar Some UCS-4 character.
@return True if nChar is valid within an RFC 2047 <token> (US-ASCII
'A'--'Z', 'a'--'z', '0'--'9', '!', '#', '$', '%', '&', ''', '*', '+',
'-', '^', '_', '`', '{', '|', '}', or '~').
*/
static bool isEncodedWordTokenChar(sal_uInt32 nChar);
/** Check whether some character is valid within an RFC 2060 <atom>.
@param nChar Some UCS-4 character.
@return True if nChar is valid within an RFC 2060 <atom> (US-ASCII
'A'--'Z', 'a'--'z', '0'--'9', '!', '#', '$', '&', ''', '+', ',', '-',
'.', '/', ':', ';', '<', '=', '>', '?', '@', '[', ']', '^', '_', '`',
'|', '}', or '~').
*/
static bool isIMAPAtomChar(sal_uInt32 nChar);
/** Get the digit weight of a US-ASCII character.
@param nChar Some UCS-4 character.
@return If nChar is a US-ASCII (decimal) digit character (US-ASCII
'0'--'9'), return the corresponding weight (0--9); otherwise,
return -1.
*/
static inline int getWeight(sal_uInt32 nChar);
/** Get the hexadecimal digit weight of a US-ASCII character.
@param nChar Some UCS-4 character.
@return If nChar is a US-ASCII hexadecimal digit character (US-ASCII
'0'--'9', 'A'--'F', or 'a'--'f'), return the corresponding weight
(0--15); otherwise, return -1.
*/
static inline int getHexWeight(sal_uInt32 nChar);
/** Get the Base 64 digit weight of a US-ASCII character.
@param nChar Some UCS-4 character.
@return If nChar is a US-ASCII Base 64 digit character (US-ASCII
'A'--'F', or 'a'--'f', '0'--'9', '+', or '/'), return the
corresponding weight (0--63); if nChar is the US-ASCII Base 64 padding
character (US-ASCII '='), return -1; otherwise, return -2.
*/
static inline int getBase64Weight(sal_uInt32 nChar);
/** Get a hexadecimal digit encoded as US-ASCII.
@param nWeight Must be in the range 0--15, inclusive.
@return The canonic (i.e., upper case) hexadecimal digit
corresponding to nWeight (US-ASCII '0'--'9' or 'A'--'F').
*/
static sal_uInt32 getHexDigit(int nWeight);
static inline bool isHighSurrogate(sal_uInt32 nUTF16);
static inline bool isLowSurrogate(sal_uInt32 nUTF16);
static inline sal_uInt32 toUTF32(sal_Unicode cHighSurrogate,
sal_Unicode cLowSurrogate);
/** Check two US-ASCII strings for equality, ignoring case.
@param pBegin1 Points to the start of the first string, must not be
null.
@param pEnd1 Points past the end of the first string, must be >=
pBegin1.
@param pString2 Points to the start of the null terminated second
string, must not be null.
@return True if the two strings are equal, ignoring the case of US-
ASCII alphabetic characters (US-ASCII 'A'--'Z' and 'a'--'z').
*/
static bool equalIgnoreCase(const sal_Char * pBegin1,
const sal_Char * pEnd1,
const sal_Char * pString2);
/** Check two US-ASCII strings for equality, ignoring case.
@param pBegin1 Points to the start of the first string, must not be
null.
@param pEnd1 Points past the end of the first string, must be >=
pBegin1.
@param pString2 Points to the start of the null terminated second
string, must not be null.
@return True if the two strings are equal, ignoring the case of US-
ASCII alphabetic characters (US-ASCII 'A'--'Z' and 'a'--'z').
*/
static bool equalIgnoreCase(const sal_Unicode * pBegin1,
const sal_Unicode * pEnd1,
const sal_Char * pString2);
static inline bool startsWithLineBreak(const sal_Char * pBegin,
const sal_Char * pEnd);
static inline bool startsWithLineBreak(const sal_Unicode * pBegin,
const sal_Unicode * pEnd);
static inline bool startsWithLineFolding(const sal_Char * pBegin,
const sal_Char * pEnd);
static inline bool startsWithLineFolding(const sal_Unicode * pBegin,
const sal_Unicode * pEnd);
static bool startsWithLinearWhiteSpace(const sal_Char * pBegin,
const sal_Char * pEnd);
static const sal_Unicode * skipLinearWhiteSpace(const sal_Unicode *
pBegin,
const sal_Unicode * pEnd);
static const sal_Unicode * skipComment(const sal_Unicode * pBegin,
const sal_Unicode * pEnd);
static const sal_Unicode * skipLinearWhiteSpaceComment(const sal_Unicode *
pBegin,
const sal_Unicode *
pEnd);
static inline bool needsQuotedStringEscape(sal_uInt32 nChar);
static const sal_Char * skipQuotedString(const sal_Char * pBegin,
const sal_Char * pEnd);
static const sal_Unicode * skipQuotedString(const sal_Unicode * pBegin,
const sal_Unicode * pEnd);
static bool scanUnsigned(const sal_Unicode *& rBegin,
const sal_Unicode * pEnd, bool bLeadingZeroes,
sal_uInt32 & rValue);
static const sal_Unicode * scanQuotedBlock(const sal_Unicode * pBegin,
const sal_Unicode * pEnd,
sal_uInt32 nOpening,
sal_uInt32 nClosing,
sal_Size & rLength,
bool & rModify);
static sal_Unicode const * scanParameters(sal_Unicode const * pBegin,
sal_Unicode const * pEnd,
INetContentTypeParameterList *
pParameters);
/** Parse the body of an RFC 2045 Content-Type header field.
@param pBegin The range (that must be valid) from non-null pBegin,
inclusive. to non-null pEnd, exclusive, forms the body of the
Content-Type header field. It must be of the form
token "/" token *(";" token "=" (token / quoted-string))
with intervening linear white space and comments (cf. RFCs 822, 2045).
The RFC 2231 extension are supported. The encoding of rMediaType
should be US-ASCII, but any Unicode values in the range U+0080..U+FFFF
are interpretet 'as appropriate.'
@param pType If not null, returns the type (the first of the above
tokens), in US-ASCII encoding and converted to lower case.
@param pSubType If not null, returns the sub-type (the second of the
above tokens), in US-ASCII encoding and converted to lower case.
@param pParameters If not null, returns the parameters as a list of
INetContentTypeParameters (the attributes are in US-ASCII encoding and
converted to lower case, the values are in Unicode encoding). If
null, only the syntax of the parameters is checked, but they are not
returned.
@return Null if the syntax of the field body is incorrect (i.e., does
not start with type and sub-type tokens). Otherwise, a pointer past the
longest valid input prefix. If null is returned, none of the output
parameters will be modified.
*/
static sal_Unicode const * scanContentType(
sal_Unicode const *pBegin, sal_Unicode const * pEnd,
OUString * pType = 0, OUString * pSubType = 0,
INetContentTypeParameterList * pParameters = 0);
static inline rtl_TextEncoding translateToMIME(rtl_TextEncoding
eEncoding);
static inline rtl_TextEncoding translateFromMIME(rtl_TextEncoding
eEncoding);
static const sal_Char * getCharsetName(rtl_TextEncoding eEncoding);
static rtl_TextEncoding getCharsetEncoding(const sal_Char * pBegin,
const sal_Char * pEnd);
static inline bool isMIMECharsetEncoding(rtl_TextEncoding eEncoding);
static INetMIMECharsetList_Impl *
createPreferredCharsetList(rtl_TextEncoding eEncoding);
static sal_Unicode * convertToUnicode(const sal_Char * pBegin,
const sal_Char * pEnd,
rtl_TextEncoding eEncoding,
sal_Size & rSize);
static sal_Char * convertFromUnicode(const sal_Unicode * pBegin,
const sal_Unicode * pEnd,
rtl_TextEncoding eEncoding,
sal_Size & rSize);
/** Get the number of octets required to encode an UCS-4 character using
UTF-8 encoding.
@param nChar Some UCS-4 character.
@return The number of octets required (in the range 1--6, inclusive).
*/
static inline int getUTF8OctetCount(sal_uInt32 nChar);
static inline void writeEscapeSequence(INetMIMEOutputSink & rSink,
sal_uInt32 nChar);
static void writeUTF8(INetMIMEOutputSink & rSink, sal_uInt32 nChar);
static void writeHeaderFieldBody(INetMIMEOutputSink & rSink,
HeaderFieldType eType,
const OUString& rBody,
rtl_TextEncoding ePreferredEncoding,
bool bInitialSpace = true);
static bool translateUTF8Char(const sal_Char *& rBegin,
const sal_Char * pEnd,
rtl_TextEncoding eEncoding,
sal_uInt32 & rCharacter);
static OUString decodeHeaderFieldBody(HeaderFieldType eType,
const OString& rBody);
/** Get the UTF-32 character at the head of a UTF-16 encoded string.
@param rBegin Points to the start of the UTF-16 encoded string, must
not be null. On exit, it points past the first UTF-32 character's
encoding.
@param pEnd Points past the end of the UTF-16 encoded string, must be
strictly greater than rBegin.
@return The UCS-4 character at the head of the UTF-16 encoded string.
If the string does not start with the UTF-16 encoding of a UCS-32
character, the first UTF-16 value is returned.
*/
static inline sal_uInt32 getUTF32Character(const sal_Unicode *& rBegin,
const sal_Unicode * pEnd);
/** Put the UTF-16 encoding of a UTF-32 character into a buffer.
@param pBuffer Points to a buffer, must not be null.
@param nUTF32 An UTF-32 character, must be in the range 0..0x10FFFF.
@return A pointer past the UTF-16 characters put into the buffer
(i.e., pBuffer + 1 or pBuffer + 2).
*/
static inline sal_Unicode * putUTF32Character(sal_Unicode * pBuffer,
sal_uInt32 nUTF32);
};
// static
inline bool INetMIME::isISO88591(sal_uInt32 nChar)
{
return nChar <= 0xFF;
}
// static
inline bool INetMIME::isControl(sal_uInt32 nChar)
{
return nChar <= 0x1F || nChar == 0x7F;
}
// static
inline bool INetMIME::isWhiteSpace(sal_uInt32 nChar)
{
return nChar == '\t' || nChar == ' ';
}
// static
inline bool INetMIME::isVisible(sal_uInt32 nChar)
{
return nChar >= '!' && nChar <= '~';
}
// static
inline bool INetMIME::isBase64Digit(sal_uInt32 nChar)
{
return rtl::isAsciiUpperCase(nChar) || rtl::isAsciiLowerCase(nChar) || rtl::isAsciiDigit(nChar)
|| nChar == '+' || nChar == '/';
}
// static
inline int INetMIME::getWeight(sal_uInt32 nChar)
{
return rtl::isAsciiDigit(nChar) ? int(nChar - '0') : -1;
}
// static
inline int INetMIME::getHexWeight(sal_uInt32 nChar)
{
return rtl::isAsciiDigit(nChar) ? int(nChar - '0') :
nChar >= 'A' && nChar <= 'F' ? int(nChar - 'A' + 10) :
nChar >= 'a' && nChar <= 'f' ? int(nChar - 'a' + 10) : -1;
}
// static
inline int INetMIME::getBase64Weight(sal_uInt32 nChar)
{
return rtl::isAsciiUpperCase(nChar) ? int(nChar - 'A') :
rtl::isAsciiLowerCase(nChar) ? int(nChar - 'a' + 26) :
rtl::isAsciiDigit(nChar) ? int(nChar - '0' + 52) :
nChar == '+' ? 62 :
nChar == '/' ? 63 :
nChar == '=' ? -1 : -2;
}
// static
inline bool INetMIME::isHighSurrogate(sal_uInt32 nUTF16)
{
return nUTF16 >= 0xD800 && nUTF16 <= 0xDBFF;
}
// static
inline bool INetMIME::isLowSurrogate(sal_uInt32 nUTF16)
{
return nUTF16 >= 0xDC00 && nUTF16 <= 0xDFFF;
}
// static
inline sal_uInt32 INetMIME::toUTF32(sal_Unicode cHighSurrogate,
sal_Unicode cLowSurrogate)
{
DBG_ASSERT(isHighSurrogate(cHighSurrogate)
&& isLowSurrogate(cLowSurrogate),
"INetMIME::toUTF32(): Bad chars");
return ((sal_uInt32(cHighSurrogate) & 0x3FF) << 10)
| (sal_uInt32(cLowSurrogate) & 0x3FF);
}
// static
inline bool INetMIME::startsWithLineBreak(const sal_Char * pBegin,
const sal_Char * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIME::startsWithLineBreak(): Bad sequence");
return pEnd - pBegin >= 2 && pBegin[0] == 0x0D && pBegin[1] == 0x0A;
// CR, LF
}
// static
inline bool INetMIME::startsWithLineBreak(const sal_Unicode * pBegin,
const sal_Unicode * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIME::startsWithLineBreak(): Bad sequence");
return pEnd - pBegin >= 2 && pBegin[0] == 0x0D && pBegin[1] == 0x0A;
// CR, LF
}
// static
inline bool INetMIME::startsWithLineFolding(const sal_Char * pBegin,
const sal_Char * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIME::startsWithLineFolding(): Bad sequence");
return pEnd - pBegin >= 3 && pBegin[0] == 0x0D && pBegin[1] == 0x0A
&& isWhiteSpace(pBegin[2]); // CR, LF
}
// static
inline bool INetMIME::startsWithLineFolding(const sal_Unicode * pBegin,
const sal_Unicode * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIME::startsWithLineFolding(): Bad sequence");
return pEnd - pBegin >= 3 && pBegin[0] == 0x0D && pBegin[1] == 0x0A
&& isWhiteSpace(pBegin[2]); // CR, LF
}
// static
inline bool INetMIME::startsWithLinearWhiteSpace(const sal_Char * pBegin,
const sal_Char * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIME::startsWithLinearWhiteSpace(): Bad sequence");
return pBegin != pEnd
&& (isWhiteSpace(*pBegin) || startsWithLineFolding(pBegin, pEnd));
}
// static
inline bool INetMIME::needsQuotedStringEscape(sal_uInt32 nChar)
{
return nChar == '"' || nChar == '\\';
}
// static
inline rtl_TextEncoding INetMIME::translateToMIME(rtl_TextEncoding eEncoding)
{
#if defined WNT
return eEncoding == RTL_TEXTENCODING_MS_1252 ?
RTL_TEXTENCODING_ISO_8859_1 : eEncoding;
#else // WNT
return eEncoding;
#endif // WNT
}
// static
inline rtl_TextEncoding INetMIME::translateFromMIME(rtl_TextEncoding
eEncoding)
{
#if defined WNT
return eEncoding == RTL_TEXTENCODING_ISO_8859_1 ?
RTL_TEXTENCODING_MS_1252 : eEncoding;
#else
return eEncoding;
#endif
}
// static
inline bool INetMIME::isMIMECharsetEncoding(rtl_TextEncoding eEncoding)
{
return ( rtl_isOctetTextEncoding(eEncoding) == sal_True );
}
// static
inline int INetMIME::getUTF8OctetCount(sal_uInt32 nChar)
{
DBG_ASSERT(nChar < 0x80000000, "INetMIME::getUTF8OctetCount(): Bad char");
return nChar < 0x80 ? 1 :
nChar < 0x800 ? 2 :
nChar <= 0x10000 ? 3 :
nChar <= 0x200000 ? 4 :
nChar <= 0x4000000 ? 5 : 6;
}
// static
inline sal_uInt32 INetMIME::getUTF32Character(const sal_Unicode *& rBegin,
const sal_Unicode * pEnd)
{
DBG_ASSERT(rBegin && rBegin < pEnd,
"INetMIME::getUTF32Character(): Bad sequence");
if (rBegin + 1 < pEnd && rBegin[0] >= 0xD800 && rBegin[0] <= 0xDBFF
&& rBegin[1] >= 0xDC00 && rBegin[1] <= 0xDFFF)
{
sal_uInt32 nUTF32 = sal_uInt32(*rBegin++ & 0x3FF) << 10;
return (nUTF32 | (*rBegin++ & 0x3FF)) + 0x10000;
}
else
return *rBegin++;
}
// static
inline sal_Unicode * INetMIME::putUTF32Character(sal_Unicode * pBuffer,
sal_uInt32 nUTF32)
{
DBG_ASSERT(nUTF32 <= 0x10FFFF, "INetMIME::putUTF32Character(): Bad char");
if (nUTF32 < 0x10000)
*pBuffer++ = sal_Unicode(nUTF32);
else
{
nUTF32 -= 0x10000;
*pBuffer++ = sal_Unicode(0xD800 | (nUTF32 >> 10));
*pBuffer++ = sal_Unicode(0xDC00 | (nUTF32 & 0x3FF));
}
return pBuffer;
}
class INetMIMEOutputSink
{
public:
static sal_uInt32 const NO_LINE_LENGTH_LIMIT = SAL_MAX_UINT32;
private:
sal_uInt32 m_nColumn;
sal_uInt32 m_nLineLengthLimit;
protected:
/** Write a sequence of octets.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
virtual void writeSequence(const sal_Char * pBegin,
const sal_Char * pEnd) = 0;
/** Write a null terminated sequence of octets (without the terminating
null).
@param pOctets A null terminated sequence of octets, must not be
null.
@return The length of pOctets (without the terminating null).
*/
virtual sal_Size writeSequence(const sal_Char * pSequence);
/** Write a sequence of octets.
@descr The supplied sequence of UCS-4 characters is interpreted as a
sequence of octets. It is an error if any of the elements of the
sequence has a numerical value greater than 255.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
virtual void writeSequence(const sal_uInt32 * pBegin,
const sal_uInt32 * pEnd);
/** Write a sequence of octets.
@descr The supplied sequence of Unicode characters is interpreted as
a sequence of octets. It is an error if any of the elements of the
sequence has a numerical value greater than 255.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
virtual void writeSequence(const sal_Unicode * pBegin,
const sal_Unicode * pEnd);
public:
INetMIMEOutputSink(sal_uInt32 nTheColumn = 0,
sal_uInt32 nTheLineLengthLimit
= INetMIME::SOFT_LINE_LENGTH_LIMIT):
m_nColumn(nTheColumn), m_nLineLengthLimit(nTheLineLengthLimit) {}
virtual ~INetMIMEOutputSink() {}
/** Get the current column.
@return The current column (starting from zero).
*/
sal_uInt32 getColumn() const { return m_nColumn; }
sal_uInt32 getLineLengthLimit() const { return m_nLineLengthLimit; }
void setLineLengthLimit(sal_uInt32 nTheLineLengthLimit)
{ m_nLineLengthLimit = nTheLineLengthLimit; }
virtual ErrCode getError() const;
/** Write a sequence of octets.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
inline void write(const sal_Char * pBegin, const sal_Char * pEnd);
/** Write a sequence of octets.
@param pBegin Points to the start of the sequence, must not be null.
@param nLength The length of the sequence.
*/
void write(const sal_Char * pBegin, sal_Size nLength)
{ write(pBegin, pBegin + nLength); }
/** Write a sequence of octets.
@descr The supplied sequence of UCS-4 characters is interpreted as a
sequence of octets. It is an error if any of the elements of the
sequence has a numerical value greater than 255.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
inline void write(const sal_uInt32 * pBegin, const sal_uInt32 * pEnd);
/** Write a sequence of octets.
@descr The supplied sequence of Unicode characters is interpreted as
a sequence of octets. It is an error if any of the elements of the
sequence has a numerical value greater than 255.
@param pBegin Points to the start of the sequence, must not be null.
@param pEnd Points past the end of the sequence, must be >= pBegin.
*/
inline void write(const sal_Unicode * pBegin, const sal_Unicode * pEnd);
/** Write a sequence of octets.
@param rOctets A OString, interpreted as a sequence of octets.
@param nBegin The offset of the first character to write.
@param nEnd The offset past the last character to write.
*/
void write(const OString& rOctets, sal_Int32 nBegin, sal_Int32 nEnd)
{
writeSequence(rOctets.getStr() + nBegin, rOctets.getStr() + nEnd);
m_nColumn += nEnd - nBegin;
}
/** Write a single octet.
@param nOctet Some octet.
@return This instance.
*/
inline INetMIMEOutputSink & operator <<(sal_Char nOctet);
/** Write a null terminated sequence of octets (without the terminating
null).
@param pOctets A null terminated sequence of octets, must not be
null.
@return This instance.
*/
inline INetMIMEOutputSink & operator <<(const sal_Char * pOctets);
/** Write a sequence of octets.
@param rOctets A OString, interpreted as a sequence of octets.
@return This instance.
*/
INetMIMEOutputSink & operator <<(const OString& rOctets)
{
writeSequence(rOctets.getStr(), rOctets.getStr() + rOctets.getLength());
m_nColumn += rOctets.getLength();
return *this;
}
/** Call a manipulator function.
@param pManipulator A manipulator function.
@return Whatever the manipulator function returns.
*/
INetMIMEOutputSink &
operator <<(INetMIMEOutputSink & (* pManipulator)(INetMIMEOutputSink &))
{ return pManipulator(*this); }
/** Write a line end (CR LF).
*/
void writeLineEnd();
/** A manipulator function that writes a line end (CR LF).
@param rSink Some sink.
@return The sink rSink.
*/
static inline INetMIMEOutputSink & endl(INetMIMEOutputSink & rSink);
};
inline void INetMIMEOutputSink::write(const sal_Char * pBegin,
const sal_Char * pEnd)
{
writeSequence(pBegin, pEnd);
m_nColumn += pEnd - pBegin;
}
inline void INetMIMEOutputSink::write(const sal_uInt32 * pBegin,
const sal_uInt32 * pEnd)
{
writeSequence(pBegin, pEnd);
m_nColumn += pEnd - pBegin;
}
inline void INetMIMEOutputSink::write(const sal_Unicode * pBegin,
const sal_Unicode * pEnd)
{
writeSequence(pBegin, pEnd);
m_nColumn += pEnd - pBegin;
}
inline INetMIMEOutputSink & INetMIMEOutputSink::operator <<(sal_Char nOctet)
{
writeSequence(&nOctet, &nOctet + 1);
++m_nColumn;
return *this;
}
inline INetMIMEOutputSink & INetMIMEOutputSink::operator <<(const sal_Char *
pOctets)
{
m_nColumn += writeSequence(pOctets);
return *this;
}
// static
inline INetMIMEOutputSink & INetMIMEOutputSink::endl(INetMIMEOutputSink &
rSink)
{
rSink.writeLineEnd();
return rSink;
}
// static
inline void INetMIME::writeEscapeSequence(INetMIMEOutputSink & rSink,
sal_uInt32 nChar)
{
DBG_ASSERT(nChar <= 0xFF, "INetMIME::writeEscapeSequence(): Bad char");
rSink << '=' << sal_uInt8(getHexDigit(nChar >> 4))
<< sal_uInt8(getHexDigit(nChar & 15));
}
class INetMIMEStringOutputSink: public INetMIMEOutputSink
{
OStringBuffer m_aBuffer;
using INetMIMEOutputSink::writeSequence;
virtual void writeSequence(const sal_Char * pBegin,
const sal_Char * pEnd) SAL_OVERRIDE;
public:
inline INetMIMEStringOutputSink(sal_uInt32 nColumn = 0,
sal_uInt32 nLineLengthLimit
= INetMIME::SOFT_LINE_LENGTH_LIMIT):
INetMIMEOutputSink(nColumn, nLineLengthLimit) {}
virtual ErrCode getError() const SAL_OVERRIDE;
OString takeBuffer()
{
return m_aBuffer.makeStringAndClear();
}
};
class INetMIMEEncodedWordOutputSink
{
public:
enum Context { CONTEXT_TEXT = 1,
CONTEXT_COMMENT = 2,
CONTEXT_PHRASE = 4 };
enum Space { SPACE_NO, SPACE_ENCODED, SPACE_ALWAYS };
private:
enum { BUFFER_SIZE = 256 };
enum Coding { CODING_NONE, CODING_QUOTED, CODING_ENCODED,
CODING_ENCODED_TERMINATED };
enum EncodedWordState { STATE_INITIAL, STATE_FIRST_EQUALS,
STATE_FIRST_QUESTION, STATE_CHARSET,
STATE_SECOND_QUESTION, STATE_ENCODING,
STATE_THIRD_QUESTION, STATE_ENCODED_TEXT,
STATE_FOURTH_QUESTION, STATE_SECOND_EQUALS,
STATE_BAD };
INetMIMEOutputSink & m_rSink;
Context m_eContext;
Space m_eInitialSpace;
sal_uInt32 m_nExtraSpaces;
INetMIMECharsetList_Impl * m_pEncodingList;
sal_Unicode * m_pBuffer;
sal_uInt32 m_nBufferSize;
sal_Unicode * m_pBufferEnd;
Coding m_ePrevCoding;
rtl_TextEncoding m_ePrevMIMEEncoding;
Coding m_eCoding;
sal_uInt32 m_nQuotedEscaped;
EncodedWordState m_eEncodedWordState;
inline bool needsEncodedWordEscape(sal_uInt32 nChar) const;
void finish(bool bWriteTrailer);
public:
inline INetMIMEEncodedWordOutputSink(INetMIMEOutputSink & rTheSink,
Context eTheContext,
Space eTheInitialSpace,
rtl_TextEncoding ePreferredEncoding);
~INetMIMEEncodedWordOutputSink();
INetMIMEEncodedWordOutputSink & operator <<(sal_uInt32 nChar);
inline void write(const sal_Char * pBegin, const sal_Char * pEnd);
inline void write(const sal_Unicode * pBegin, const sal_Unicode * pEnd);
inline bool flush();
};
inline INetMIMEEncodedWordOutputSink::INetMIMEEncodedWordOutputSink(
INetMIMEOutputSink & rTheSink, Context eTheContext,
Space eTheInitialSpace, rtl_TextEncoding ePreferredEncoding):
m_rSink(rTheSink),
m_eContext(eTheContext),
m_eInitialSpace(eTheInitialSpace),
m_nExtraSpaces(0),
m_pEncodingList(INetMIME::createPreferredCharsetList(ePreferredEncoding)),
m_ePrevCoding(CODING_NONE),
m_ePrevMIMEEncoding(RTL_TEXTENCODING_DONTKNOW),
m_eCoding(CODING_NONE),
m_nQuotedEscaped(0),
m_eEncodedWordState(STATE_INITIAL)
{
m_nBufferSize = BUFFER_SIZE;
m_pBuffer = static_cast< sal_Unicode * >(rtl_allocateMemory(
m_nBufferSize
* sizeof (sal_Unicode)));
m_pBufferEnd = m_pBuffer;
}
inline void INetMIMEEncodedWordOutputSink::write(const sal_Char * pBegin,
const sal_Char * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIMEEncodedWordOutputSink::write(): Bad sequence");
while (pBegin != pEnd)
operator <<(*pBegin++);
}
inline void INetMIMEEncodedWordOutputSink::write(const sal_Unicode * pBegin,
const sal_Unicode * pEnd)
{
DBG_ASSERT(pBegin && pBegin <= pEnd,
"INetMIMEEncodedWordOutputSink::write(): Bad sequence");
while (pBegin != pEnd)
operator <<(*pBegin++);
}
inline bool INetMIMEEncodedWordOutputSink::flush()
{
finish(true);
return m_ePrevCoding != CODING_NONE;
}
struct INetContentTypeParameter
{
/** The name of the attribute, in US-ASCII encoding and converted to lower
case. If a parameter value is split as described in RFC 2231, there
will only be one item for the complete parameter, with the attribute
name lacking any section suffix.
*/
const OString m_sAttribute;
/** The optional character set specification (see RFC 2231), in US-ASCII
encoding and converted to lower case.
*/
const OString m_sCharset;
/** The optional language specification (see RFC 2231), in US-ASCII
encoding and converted to lower case.
*/
const OString m_sLanguage;
/** The attribute value. If the value is a quoted-string, it is
'unpacked.' If a character set is specified, and the value can be
converted to Unicode, this is done. Also, if no character set is
specified, it is first tried to convert the value from UTF-8 encoding
to Unicode, and if that doesn't work (because the value is not in
UTF-8 encoding), it is converted from ISO-8859-1 encoding to Unicode
(which will always work). But if a character set is specified and the
value cannot be converted from that character set to Unicode, special
action is taken to produce a value that can possibly be transformed
back into its original form: Any 8-bit character from a non-encoded
part of the original value is directly converted to Unicode
(effectively handling it as if it was ISO-8859-1 encoded), and any
8-bit character from an encoded part of the original value is mapped
to the range U+F800..U+F8FF at the top of the Corporate Use Subarea
within Unicode's Private Use Area (effectively adding 0xF800 to the
character's numeric value).
*/
const OUString m_sValue;
/** This is true if the value is successfully converted to Unicode, and
false if the value is a special mixture of ISO-LATIN-1 characters and
characters from Unicode's Private Use Area.
*/
const bool m_bConverted;
INetContentTypeParameter(const OString& rTheAttribute,
const OString& rTheCharset, const OString& rTheLanguage,
const OUString& rTheValue, bool bTheConverted)
: m_sAttribute(rTheAttribute)
, m_sCharset(rTheCharset)
, m_sLanguage(rTheLanguage)
, m_sValue(rTheValue)
, m_bConverted(bTheConverted)
{
}
};
class TOOLS_DLLPUBLIC INetContentTypeParameterList
{
public:
void Clear();
void Insert(INetContentTypeParameter * pParameter, sal_uIntPtr nIndex)
{
maEntries.insert(maEntries.begin()+nIndex,pParameter);
}
void Append(INetContentTypeParameter *pParameter)
{
maEntries.push_back(pParameter);
}
inline const INetContentTypeParameter * GetObject(sal_uIntPtr nIndex) const
{
return &(maEntries[nIndex]);
}
const INetContentTypeParameter * find(const OString& rAttribute) const;
private:
boost::ptr_vector<INetContentTypeParameter> maEntries;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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