gecko-dev/mailnews/base/util/nsMsgI18N.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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#ifndef _nsMsgI18N_H_
#define _nsMsgI18N_H_
#include "nscore.h"
#include "msgCore.h"
class nsFileSpec;
#ifndef kMAX_CSNAME
#define kMAX_CSNAME 64
#endif
/**
* Encode an input string into RFC 2047 form.
*
* @param header [IN] A header to encode.
* @param structured [IN] Specify the header is structured or non-structured field (See RFC-822).
* @param charset [IN] Charset name to convert.
* @param fieldnamelen [IN] Header field name length. (e.g. "From: " -> 6)
* @param usemime [IN] If false then apply charset conversion only no MIME encoding.
* @return Encoded buffer (in C string) or NULL in case of error.
*/
NS_MSG_BASE char *nsMsgI18NEncodeMimePartIIStr(const char *header, PRBool structured, const char *charset, PRInt32 fieldnamelen, PRBool usemime);
/**
* Check if given charset is stateful (e.g. ISO-2022-JP).
*
* @param charset [IN] Charset name.
* @return True if stateful
*/
NS_MSG_BASE PRBool nsMsgI18Nstateful_charset(const char *charset);
/**
* Check if given charset is multibye (e.g. Shift_JIS, Big5).
*
* @param charset [IN] Charset name.
* @return True if multibyte
*/
NS_MSG_BASE PRBool nsMsgI18Nmultibyte_charset(const char *charset);
/**
* Check the input (unicode) string is in a range of the given charset after the conversion.
* Note, do not use this for large string (e.g. message body) since this actually applies the conversion to the buffer.
*
* @param charset [IN] Charset to be converted.
* @param inString [IN] Input unicode string to be examined.
* @param fallbackCharset [OUT]
* null if fallback charset is not needed.
* Otherwise, a fallback charset name may be set if that was used for the conversion.
* Caller is responsible for freeing the memory (or use nsXPIDLCString).
* @return True if the string can be converted within the charset range.
* False if one or more characters cannot be converted to the target charset.
*/
NS_MSG_BASE PRBool nsMsgI18Ncheck_data_in_charset_range(const char *charset, const PRUnichar* inString,
char **fallbackCharset=nsnull);
/**
* Return accept language.
* Note, the return value is not valid after this method gets called again.
*
* @return Accept language.
*/
NS_MSG_BASE const char *nsMsgI18NGetAcceptLanguage(void);
/**
* Return charset name internally used in messsage compose.
*
* @return Charset name.
*/
NS_MSG_BASE const char *msgCompHeaderInternalCharset(void);
/**
* Return charset name of file system (OS dependent).
*
* @return File system charset name.
*/
NS_MSG_BASE const char * nsMsgI18NFileSystemCharset(void);
/**
* Convert from unicode to target charset.
*
* @param charset [IN] Charset name.
* @param inString [IN] Unicode string to convert.
* @param outString [OUT] Converted output string.
* @return nsresult.
*/
NS_MSG_BASE nsresult nsMsgI18NConvertFromUnicode(const nsAFlatCString& aCharset,
const nsAFlatString& inString,
nsACString& outString);
/**
* Convert from charset to unicode.
*
* @param charset [IN] Charset name.
* @param inString [IN] Input string to convert.
* @param outString [OUT] Output unicode string.
* @return nsresult.
*/
NS_MSG_BASE nsresult nsMsgI18NConvertToUnicode(const nsAFlatCString& aCharset,
const nsAFlatCString& inString,
nsAString& outString);
/**
* Convert from unicode to target charset.
*
* @param charset [IN] Charset name.
* @param inString [IN] Unicode string to convert.
* @param outCString [OUT] Output C string, need PR_FREE.
* @return nsresult.
*/
NS_MSG_BASE nsresult ConvertFromUnicode(const char* aCharset,
const nsString& inString,
char** outCString);
/**
* Convert from charset to unicode.
*
* @param charset [IN] Charset name.
* @param inCString [IN] C string to convert.
* @param outString [OUT] Output unicode string.
* @return nsresult.
*/
NS_MSG_BASE nsresult ConvertToUnicode(const char* aCharset,
const char* inCString,
nsString& outString);
/**
* Parse for META charset.
*
* @param fileSpec [IN] A filespec.
* @return A charset name or empty string if not found.
*/
NS_MSG_BASE const char *nsMsgI18NParseMetaCharset(nsFileSpec* fileSpec);
/**
* Convert input to HTML entities (e.g.  , á).
*
* @param inString [IN] Input string to convert.
* @param outString [OUT] Converted output string.
* @return nsresult.
*/
NS_MSG_BASE nsresult nsMsgI18NConvertToEntity(const nsString& inString, nsString* outString);
/**
* Convert from charset to unicode. Also does substitution for unconverted characters (e.g. entity, '?').
*
* @param contentType [IN] text/plain or text/html.
* @param charset [IN] Charset name to convert.
* @param inString [IN] Input unicode string to convert.
* @param outString [OUT] Allocated and converted output C string. Need PR_FREE.
* @param fallbackCharset [OUT]
* null if fallback charset is not needed.
* Otherwise, a fallback charset name may be set if that was used for the conversion.
* Caller is responsible for freeing the memory (or use nsXPIDLCString).
* @param isAsciiOnly [OUT]
* null if non ASCII info is not needed.
* Otherwise, true is set if the input data is ASCII only false otherwise.
* @return nsresult.
*/
NS_MSG_BASE nsresult nsMsgI18NSaveAsCharset(const char* contentType, const char* charset,
const PRUnichar* inString, char** outString,
char **fallbackCharset=nsnull, PRBool *isAsciiOnly=nsnull);
/**
* Convert from unicode to charset, generates NNTP XPAT search string.
* Migrated from mozilla classic,
* see "http://lxr.mozilla.org/classic/source/include/libi18n.h#2162" for detail.
*
* @param aCharset [IN] Charset name to convert.
* @param inString [IN] Input unicode string to convert.
* @param outString [OUT] Converted output, the pattern should be send to NNTP XPAT command
* for searching non-ASCII header.
* @return nsresult.
*/
NS_MSG_BASE nsresult nsMsgI18NFormatNNTPXPATInNonRFC1522Format(const nsCString& aCharset, const nsString& inString, nsCString& outString);
/**
* convert a path in the native filesystem charset
*/
NS_MSG_BASE
void
nsMsgGetNativePathString(const char *aPath, nsString& aResult);
#endif /* _nsMsgI18N_H_ */