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341 lines
12 KiB
341 lines
12 KiB
/*
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kmime_util.h
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KMime, the KDE internet mail/usenet news message library.
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Copyright (c) 2001 the KMime authors.
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See file AUTHORS for details
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
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*/
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#ifndef __KMIME_UTIL_H__
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#define __KMIME_UTIL_H__
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#include "tqdatetime.h"
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#include "tqstring.h"
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#include "tqcstring.h"
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#include "tqvaluelist.h"
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#include "time.h"
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#include <tdemacros.h>
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typedef TQValueList<TQCString> QCStringList;
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namespace KMime {
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/** Consult the charset cache. Only used for reducing mem usage by
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keeping strings in a common repository.*/
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extern const char* cachedCharset(const TQCString &name) TDE_EXPORT;
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/** Consult the language cache. Only used for reducing mem usage by
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keeping strings in a common repository.*/
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extern const char* cachedLanguage(const TQCString &name) TDE_EXPORT;
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/** checks whether @p s contains any non-us-ascii characters */
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extern bool isUsAscii(const TQString &s) TDE_EXPORT;
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inline bool isOfSet(const uchar map[16], unsigned char ch) {
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Q_ASSERT( ch < 128 );
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return ( map[ ch/8 ] & 0x80 >> ch%8 );
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}
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extern const uchar specialsMap[16];
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extern const uchar tSpecialsMap[16];
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extern const uchar aTextMap[16];
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extern const uchar tTextMap[16];
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extern const uchar eTextMap[16];
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inline bool isSpecial(char ch) {
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return isOfSet( specialsMap, ch );
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}
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inline bool isTSpecial(char ch) {
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return isOfSet( tSpecialsMap, ch );
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}
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inline bool isAText(char ch) {
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return isOfSet( aTextMap, ch );
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}
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inline bool isTText(char ch) {
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return isOfSet( tTextMap, ch );
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}
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inline bool isEText(char ch) {
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return isOfSet( eTextMap, ch );
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}
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/** Decode string @p src according to RFC2047 (ie. the
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=?charset?[qb]?encoded?= construct).
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@param src source string.
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@param usedCS the detected charset is returned here
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@param defaultCS the charset to use in case the detected
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one isn't known to us.
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@param forceCS force the use of the default charset.
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@return the decoded string.
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*/
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extern TQString decodeRFC2047String(const TQCString &src, const char **usedCS,
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const TQCString &defaultCS, bool forceCS) TDE_EXPORT;
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/** Decode string @p src according to RFC2047 (ie. the
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=?charset?[qb]?encoded?= construct).
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@param src source string.
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@return the decoded string.
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*/
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extern TQString decodeRFC2047String(const TQCString &src) TDE_EXPORT;
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/** Encode string @p src according to RFC2047 using charset
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@p charset.
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@param src source string.
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@param charset charset to use.
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@param addressheader if this flag is true, all special chars
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like <,>,[,],... will be encoded, too.
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@param allow8BitHeaders if this flag is true, 8Bit headers
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are allowed.
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@return the encoded string.
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*/
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extern TQCString encodeRFC2047String(const TQString &src, const char *charset,
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bool addressHeader=false, bool allow8bitHeaders=false) TDE_EXPORT;
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/** Uses current time, pid and random numbers to construct a string
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that aims to be unique on a per-host basis (ie. for the local
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part of a message-id or for multipart boundaries.
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@return the unique string.
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@see multiPartBoundary
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*/
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extern TQCString uniqueString() TDE_EXPORT;
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/** Constructs a random string (sans leading/trailing "--") that can
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be used as a multipart delimiter (ie. as @p boundary parameter
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to a multipart/... content-type).
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@return the randomized string.
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@see uniqueString
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*/
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extern TQCString multiPartBoundary() TDE_EXPORT;
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/** Tries to extract the header with name @p name from the string
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@p src, unfolding it if necessary.
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@param src the source string.
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@param name the name of the header to search for.
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@return the first instance of the header @p name in @p src
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or a null TQCString if no such header was found.
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*/
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extern TQCString extractHeader(const TQCString &src, const char *name) TDE_EXPORT;
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/** Converts all occurrences of "\r\n" (CRLF) in @p s to "\n" (LF).
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This function is expensive and should be used only if the mail
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will be stored locally. All decode functions can cope with both
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line endings.
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@param s source string containing CRLF's
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@return the string with CRLF's substitued for LF's
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@see CRLFtoLF(const char*) LFtoCRLF
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*/
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extern TQCString CRLFtoLF(const TQCString &s) TDE_EXPORT;
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/** Converts all occurrences of "\r\n" (CRLF) in @p s to "\n" (LF).
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This function is expensive and should be used only if the mail
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will be stored locally. All decode functions can cope with both
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line endings.
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@param s source string containing CRLF's
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@return the string with CRLF's substitued for LF's
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@see CRLFtoLF(const TQCString&) LFtoCRLF
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*/
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extern TQCString CRLFtoLF(const char *s) TDE_EXPORT;
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/** Converts all occurrences of "\n" (LF) in @p s to "\r\n" (CRLF).
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This function is expensive and should be used only if the mail
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will be transmitted as an RFC822 message later. All decode
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functions can cope with and all encode functions can optionally
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produce both line endings, which is much faster.
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@param s source string containing CRLF's
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@return the string with CRLF's substitued for LF's
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@see CRLFtoLF(const TQCString&) LFtoCRLF
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*/
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extern TQCString LFtoCRLF(const TQCString &s) TDE_EXPORT;
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/** Removes quote (DQUOTE) characters and decodes "quoted-pairs"
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(ie. backslash-escaped characters)
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@param str the string to work on.
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@see addQuotes
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*/
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TDE_EXPORT extern void removeQuots(TQCString &str);
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/** Removes quote (DQUOTE) characters and decodes "quoted-pairs"
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(ie. backslash-escaped characters)
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@param str the string to work on.
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@see addQuotes
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*/
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TDE_EXPORT extern void removeQuots(TQString &str);
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/** Converts the given string into a quoted-string if
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the string contains any special characters
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(ie. one of ()<>@,.;:[]=\").
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@param str us-ascii string to work on.
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@param forceQuotes if @p true, always add quote characters.
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*/
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TDE_EXPORT extern void addQuotes(TQCString &str, bool forceQuotes);
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/**
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* @short class abstracting date formatting
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*
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* DateFormatter deals with different kinds of date
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* display formats. The formats supported by the class include:
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* <ul>
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* <li> fancy "Today 02:08:35"
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* <li> ctime "Sun Mar 31 02:08:35 2002"
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* <li> localized "2002-03-31 02:08"
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* <li> iso "2002-03-31 02:08:35"
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* <li> rfc2822 "Sun, 31 Mar 2002 02:08:35 -0500"
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* <li> custom "whatever you like"
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* </ul>
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*
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*
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*/
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class TDE_EXPORT DateFormatter {
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public:
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enum FormatType {
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CTime, //< ctime "Sun Mar 31 02:08:35 2002"
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Localized, //< localized "2002-03-31 02:08"
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Fancy, //< fancy "Today 02:08:35"
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Iso, //< iso "2002-03-31 02:08:35"
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Custom //< custom "whatever you like"
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};
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/**
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* constructor
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* @param fType default format used by the class
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*/
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DateFormatter(FormatType fType = DateFormatter::Fancy);
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~DateFormatter();
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/**
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* returns the currently set format
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*/
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FormatType getFormat() const;
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/**
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* sets the currently used format
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*/
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void setFormat(FormatType t);
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/**
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* returns formatted date string in a currently
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* set format.
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* @param otime time to format
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* @param lang used <em>only</em> by the Localized format, sets the used language
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* @param shortFormat used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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* @param includeSecs used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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*/
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TQString dateString(time_t otime, const TQString& lang = TQString(),
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bool shortFormat = true, bool includeSecs=false) const;
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/**
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* overloaded, does exactly what #dateString does (it's slower)
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*/
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TQString dateString(const TQDateTime& dtime, const TQString& lang = TQString(),
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bool shortFormat = true, bool includeSecs=false) const;
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/**
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* makes the class use the custom format for
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* date to string conversions.
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* Method accepts the same arguments
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* as TQDateTime::toString method and adds
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* "Z" expression which is substituted with the
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* RFC-822 style numeric timezone (-0500)
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* @param format the custom format
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*/
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void setCustomFormat(const TQString& format);
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TQString getCustomFormat() const;
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/**
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* returns rfc2822 formatted string
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* @param otime time to use for formatting
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*/
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TQCString rfc2822(time_t otime) const;
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/**
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* resets the internal clock
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*/
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void reset();
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//statics
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/** convenience function dateString
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* @param t specifies the FormatType to use
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* @param time time to format
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* @param data is either the format when FormatType is Custom, or language
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* when FormatType is Localized
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* @param shortFormat used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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* @param includeSecs used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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*/
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static TQString formatDate( DateFormatter::FormatType t, time_t time,
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const TQString& data = TQString(),
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bool shortFormat = true, bool includeSecs=false);
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/** convenience function, same as #formatDate
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* but returns the current time formatted
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* @param t specifies the FormatType to use
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* @param data is either the format when FormatType is Custom, or language
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* when FormatType is Localized
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* @param shortFormat used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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* @param includeSecs used <em>only</em> by the Localized format, is passed to TDELocale::formatDateTime
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*/
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static TQString formatCurrentDate( DateFormatter::FormatType t,
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const TQString& data = TQString(),
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bool shortFormat = true, bool includeSecs=false);
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/** convenience function, same as #rfc2822 */
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static TQCString rfc2822FormatDate( time_t time );
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static bool isDaylight();
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protected:
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/**
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* returns fancy formatted date string
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* @param otime time to format
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* @internal
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*/
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TQString fancy(time_t otime) const ;
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/**
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* returns localized formatted date string
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* @param otime time to format
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* @param shortFormat
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* @param includeSecs
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* @param localeLanguage language used for formatting
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* @internal
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*/
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TQString localized(time_t otime, bool shortFormat = true, bool includeSecs = false,
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const TQString& localeLanguage=TQString() ) const;
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/**
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* returns string as formatted with ctime function
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* @internal
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*/
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TQString cTime(time_t otime) const;
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/**
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* returns a string in the "%Y-%m-%d %H:%M:%S" format
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* @internal
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*/
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TQString isoDate(time_t otime) const;
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/**
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* returns date formatted with the earlier
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* given custom format
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* @param t time used for formatting
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* @internal
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*/
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TQString custom(time_t t) const;
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/**
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* returns a string identifying the timezone (eg."-0500")
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* @internal
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*/
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TQCString zone(time_t otime) const;
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time_t qdateToTimeT(const TQDateTime& dt) const;
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private:
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FormatType mFormat;
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mutable time_t mCurrentTime;
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mutable TQDateTime mDate;
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TQString mCustomFormat;
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static int mDaylight;
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};
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} // namespace KMime
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#endif /* __KMIME_UTIL_H__ */
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