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pjs/include/libi18n.h

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* libi18n.h */
#ifndef INTL_LIBI18N_H
#define INTL_LIBI18N_H
#include "xp.h"
#ifndef iDocumentContext
#define iDocumentContext MWContext *
#endif
#define Stream NET_StreamClass
#define URL URL_Struct
#include "csid.h"
#ifdef _UNICVT_DLL_
#ifdef XP_WIN32
#define UNICVTAPI __declspec(dllexport)
#else
#define UNICVTAPI
#endif
#else /* _UNICVT_DLL is undefined */
#define UNICVTAPI
#endif
/* Enum for INTL_CSIDIteratorCreate */
enum {
csiditerate_TryIMAP4Search = 1
};
/*
* To be called when backend catches charset info on <meta ... charset=...> tag.
* This will force netlib to go get fresh data again either through cache or
* network.
*/
enum
{
METACHARSET_NONE = 0,
METACHARSET_HASCHARSET,
METACHARSET_REQUESTRELAYOUT,
METACHARSET_FORCERELAYOUT,
METACHARSET_RELAYOUTDONE
};
XP_BEGIN_PROTOS
/*=======================================================*/
/* Character Code Conversion (CCC).
*
*
* CCCDataObject accessor functions are
* build as a table to allow access from a DLL
*
* Note: new functions must be added at the end
* or old apps using the new dll will fail
*/
/**@name Character Code Conversion (CCC) */
/*@{*/
/**
* Function Prototype for the codeset conversion function.
*
* @param obj Specifies the converter object
* @param src Specifies the text to be converted
* @param srclen Specifies the length of src
* @return the converted text. The length of the converted result could be
* access via INTL_GetCCCLen(obj)
* @see INTL_GetCCCLen
* @see INTL_SetCCCCvtfunc
*
*/
typedef unsigned char *(*CCCFunc)(CCCDataObject obj, const unsigned char * src, int32 srclen);
/**
* Function Prototype for the Report Auto Detect Result function.
*
* @param closure Specifies the closure which associated with the converter
* object by calling INTL_SetCCCReportAutoDetect
* @param obj Specifies the converter object
* @param doc_csid Specifies the auto-detected document csid
* @see INTL_SetCCCReportAutoDetect
*
*/
typedef void (*CCCRADFunc)(void * closure, CCCDataObject obj, uint16 doc_csid);
/**
* Opaque converter object.
*
* This struct is an opaque converter object.
*/
struct OpaqueCCCDataObject { /* WARNING: MUST MATCH REAL STRUCT */
/** pointer to the converter object private functions struct */
struct INTL_CCCFuncs *funcs_pointer;
};
/**
* This structure hold the private functions of a conversion object.
*
* <B>WARNING: THIS STRUCT AND THE TABLE MUST BE IN SYNC WITH EACH OTHER </B>
*/
struct INTL_CCCFuncs {
/** The private function of INTL_SetCCCReportAutoDetect. */
void (*set_report_autodetect)(CCCDataObject, CCCRADFunc, void*);
/** The private function of INTL_CallCCCReportAutoDetect. */
void (*call_report_autodetect)(CCCDataObject, uint16);
/** The private function of INTL_SetCCCCvtfunc. */
void (*set_cvtfunc)(CCCDataObject, CCCFunc);
/** The private function of INTL_GetCCCCvtfunc. */
CCCFunc (*get_cvtfunc)(CCCDataObject);
/** The private function of INTL_SetCCCJismode. */
void (*set_jismode)(CCCDataObject,int32);
/** The private function of INTL_GetCCCJismode. */
int32 (*get_jismode)(CCCDataObject);
/** The private function of INTL_SetCCCCvtflag. */
void (*set_cvtflag)(CCCDataObject,int32);
/** The private function of INTL_GetCCCCvtflag. */
int32 (*get_cvtflag)(CCCDataObject);
/** The private function of INTL_GetCCCUncvtbuf. */
unsigned char* (*get_uncvtbuf)(CCCDataObject);
/** The private function of INTL_SetCCCDefaultCSID. */
void (*set_default_doc_csid)(CCCDataObject, uint16);
/** The private function of INTL_GetCCCDefaultCSID. */
uint16 (*get_default_doc_csid)(CCCDataObject);
/** The private function of INTL_SetCCCFromCSID. */
void (*set_from_csid)(CCCDataObject, uint16);
/** The private function of INTL_GetCCCFromCSID. */
uint16 (*get_from_csid)(CCCDataObject);
/** The private function of INTL_SetCCCToCSID. */
void (*set_to_csid)(CCCDataObject, uint16);
/** The private function of INTL_GetCCCToCSID. */
uint16 (*get_to_csid)(CCCDataObject);
/** The private function of INTL_SetCCCRetval. */
void (*set_retval)(CCCDataObject, int);
/** The private function of INTL_GetCCCRetval. */
int (*get_retval)(CCCDataObject);
/** The private function of INTL_SetCCCLen. */
void (*set_len)(CCCDataObject, int32);
/** The private function of INTL_GetCCCLen. */
int32 (*get_len)(CCCDataObject);
};
/**
* Create and initialize Character Code Converter Object.
*
* Create and initialize character code converter.
* It also set up a converter if a doc_csid is known (by DOC_CSID_KNOWN).
* Caller is responsible for deallocation of an allocated memory.
*
* @param c Pointer to an i18n private data structure.
* @param default_doc_csid Default doc_csid to be used.
* @return CCCDataObject Created character code converter object pointer.
*/
PUBLIC CCCDataObject INTL_CreateDocumentCCC(
INTL_CharSetInfo c,
uint16 default_doc_csid
);
/**
* Look for a converter from one charset to another.
*
* If the from_csid is CS_DEFAULT, this function uses the ID returned by
* INTL_GetCCCDefaultCSID. If the to_csid is zero, this function uses the ID
* returned by INTL_DocToWinCharSetID for the from_csid determined above.
* If found, the converter function is stored in the given character code
* conversion object.
*
* @param from_csid Specifies the charset ID to convert from
* @param to_csid Specifies the charset ID to convert to
* @param obj Specifies the character code converter object
* @return 1 for success, 0 for failure
* @see INTL_CreateCharCodeConverter, INTL_CallCharCodeConverter
*/
PUBLIC int INTL_GetCharCodeConverter(
int16 from_csid,
int16 to_csid,
CCCDataObject obj
);
/**
* Set up charset internal data by meta charset.
*
* Given a charset name, this will set up i18n private charset info
* which is obtained by a given context.
* Input charset name should be obtained from HTML META tag.
*
* @param context Context to be set up.
* @param charset_tag Charset name as an input (e.g. iso-8859-1).
* @see INTL_CSIReportMetaCharsetTag
*/
PUBLIC void INTL_CCCReportMetaCharsetTag(
MWContext *context,
char *charset_tag
);
/**
* Passes some more text to the character code converter.
*
* The character code converter object keeps track of the current state as it
* receives data to convert. If partial characters are received, they are
* buffered until this function is called again.
* INTL_GetCharCodeConverter must first be called before calling this function.
*
* In some cases, the text is converted in place (in the input buffer).
*
* @param obj Specifies the character code converter object
* @param str Specifies the text to be converted
* @param len Specifies the length in bytes of the text
* @return The converted text, null terminated
* @see INTL_GetCharCodeConverter
*/
PUBLIC unsigned char *INTL_CallCharCodeConverter(
CCCDataObject obj,
const unsigned char *str,
int32 len
);
/**
* Initialize and set up a character code converter for a mail charset.
*
* Allocate memory and initialize for character code converter.
* From/To charset is determined by given context or by parsing the source
* buffer in case of HTML.
* After charsets are determined, it set up a converter function.
* Caller is responsible for deallocation of an allocated memory.
*
* @param context Context to access charset info.
* @param isHTML If TRUE then the input stream is parsed for meta tag.
* @param buffer Source buffer.
* @param buffer_size the length of the source buffer.
* @return CCCDataObject Created character code converter object pointer.
* @see INTL_CreateCharCodeConverter
*/
PUBLIC CCCDataObject INTL_CreateDocToMailConverter(
iDocumentContext context,
XP_Bool isHTML,
unsigned char *buffer,
uint32 buffer_size
);
/**
* Create a character code converter object used for codeset conversion.
*
* @return The new character code converter object
* @see INTL_CreateDocumentCCC, INTL_GetCharCodeConverter,
* INTL_DestroyCharCodeConverter
* @deprecated Obsolescent. Please use INTL_CreateDocumentCCC.
*/
PUBLIC CCCDataObject INTL_CreateCharCodeConverter(void);
/**
* Frees the given character code conversion object.
*
* This function destroys the code conversion object created by
* INTL_CreateCharCodeConverter.
*
* @param obj Specifies the character code conversion object to free
* @see INTL_CreateCharCodeConverter
*/
PUBLIC void INTL_DestroyCharCodeConverter(
CCCDataObject obj
);
/**
* Converts a piece of text from one charset to another.
*
* This function does not do charset ID auto-detection. The caller must pass
* the from/to charset IDs. This function does not keep state. Don't use it to
* convert a stream of data. Only use this when you want to convert a string,
* and you have no way to hold on to the converter object.
*
* If the string gets converted in place (use the input buffer), then this
* function returns NULL.
*
* @param fromcsid Specifies the charset ID to convert from
* @param tocsid Specifies the charset ID to convert to
* @param pSrc Specifies the input text
* @param block_size Specifies the number of bytes in the input text
* @return The converted text, null terminated, or NULL if converted in place
* @see INTL_CallCharCodeConverter
*/
PUBLIC unsigned char *INTL_ConvertLineWithoutAutoDetect(
int16 fromcsid,
int16 tocsid,
unsigned char *pSrc,
uint32 block_size
);
/**
* Returns the window charset ID corresponding to the given document charset ID.
*
* This function searches a built-in table to find the first entry that
* matches the given document charset ID. If no such entry is found, it
* returns CS_FE_ASCII.
*
* @param csid Specifies the document charset ID
* @return The corresponding window charset ID
*/
PUBLIC int16 INTL_DocToWinCharSetID(
int16 csid
);
/**
* Return the charset used in internet message from a specified charset.
*
* In the current implementation of Communicator, we assume there is a many to
* one relationship between a encoding and a encoding used on internet mail
* message. This routines is used to get the outgoing encoding for a specified
* encoding. The caller than can convert the text of the specified encoding to
* the return encoding and before send out the internet message. Usually the
* relationship is the same as the newsgroup posting and this one. However, for
* some region/country like Korean, it is not the same. In such region/country,
* they use different encodings in internet mail message and newsgroup posting.
* In that case INTL_DefaultNewsCharSetID should be used instead.
*
* Issues: The current model assume the text of a particular encoding is always
* sending out as one encoding. Such assumption break when people want send out
* message in different Cyrillic, Chinese, or Unicode encoding. Therefore, we
* may change this architecture in the near future.
*
* The mapping are:
* <UL>
* <LI>CS_ASCII: CS_ASCII
* <LI>CS_LATIN1: CS_LATIN1
* <LI>CS_JIS: CS_JIS
* <LI>CS_SJIS: CS_JIS
* <LI>CS_EUCJP: CS_JIS
* <LI>CS_JIS_AUTO: CS_JIS
* <LI>CS_SJIS_AUTO: CS_JIS
* <LI>CS_EUCJP_AUTO: CS_JIS
* <LI>CS_KSC_8BIT: CS_2022_KR [Note 1]
* <LI>CS_KSC_8BIT_AUTO: CS_2022_KR [Note 1]
* <LI>CS_GB_8BIT: CS_GB_8BIT
* <LI>CS_BIG5: CS_BIG5
* <LI>CS_CNS_8BIT: CS_BIG5
* <LI>CS_MAC_ROMAN: CS_LATIN1
* <LI>CS_LATIN2: CS_LATIN2
* <LI>CS_MAC_CE,: CS_LATIN2
* <LI>CS_CP_1250: CS_LATIN2
* <LI>CS_8859_5: CS_KOI8_R [Note 2]
* <LI>CS_KOI8_R: CS_KOI8_R [Note 2]
* <LI>CS_MAC_CYRILLIC: CS_KOI8_R [Note 2]
* <LI>CS_CP_1251: CS_KOI8_R [Note 2]
* <LI>CS_8859_7: CS_8859_7
* <LI>CS_CP_1253: CS_8859_7
* <LI>CS_MAC_GREEK: CS_8859_7
* <LI>CS_8859_9: CS_8859_9
* <LI>CS_MAC_TURKISH: CS_8859_9
* <LI>CS_UTF8: CS_UTF7
* <LI>CS_UTF7: CS_UTF7
* <LI>CS_UCS2: CS_UTF7
* <LI>CS_UCS2_SWAP: CS_UTF7
* </UL>
* Note:
* <OL>
* <LI>For INTL_DefaultNewsCharSetID, this value is different
* <LI>The value is the one specified in preference
* "intl.mailcharset.cyrillic". The default value is CS_KOI_R. See
* <A HREF=http://people.netscape.com/ftang/cyrillicmail.html>
* http://people.netscape.com/ftang/cyrillicmail.html</A> for details.
* </OL>
*
* @param Specifies the encoding
* @return the encoding should be send out for the internet mail message.
* @see INTL_DefaultNewsCharSetID
*/
PUBLIC int16 INTL_DefaultMailCharSetID(int16 csid);
/**
* Return the charset used in internet message from a specified charset.
*
* In the current implementation of Communicator, we assume there is a many to
* one relationship between a encoding and a encoding used on internet
* newsgroup posting. This routines is used to get the outgoing encoding for a
* specified encoding. The caller than can convert the text of the specified
* encoding to the return encoding and before post the message to the
* newsgroup. Usually the relationship is the same as the newsgroup posting
* and this one. However, for some region/country like Korean, it is not the
* same. In such region/country, they use different encodings in internet mail
* message and newsgroup posting. In that case INTL_DefaultMailCharSetID should
* be used instead.
*
* Issues: The current model assume the text of a particular encoding is always
* sending out as one encoding. Such assumption break when people want send out
* message in different Cyrillic, Chinese, or Unicode encoding. Therefore, we
* may change this architecture in the near future.
*
* The mapping are:
* <UL>
* <LI>ASCII: CS_ASCII
* <LI>LATIN1: CS_LATIN1
* <LI>JIS: CS_JIS
* <LI>SJIS: CS_JIS
* <LI>EUCJP: CS_JIS
* <LI>JIS_AUTO: CS_JIS
* <LI>SJIS_AUTO: CS_JIS
* <LI>EUCJP_AUTO: CS_JIS
* <LI>KSC_8BIT: CS_KSC_8BIT [Note 1]
* <LI>KSC_8BIT_AUTO: CS_KSC_8BIT [Note 1]
* <LI>GB_8BIT: CS_GB_8BIT
* <LI>BIG5: CS_BIG5
* <LI>CNS_8BIT: CS_BIG5
* <LI>MAC_ROMAN: CS_LATIN1
* <LI>LATIN2: CS_LATIN2
* <LI>MAC_CE,: CS_LATIN2
* <LI>CP_1250: CS_LATIN2
* <LI>8859_5: CS_KOI8_R [Note 2]
* <LI>KOI8_R: CS_KOI8_R [Note 2]
* <LI>MAC_CYRILLIC: CS_KOI8_R [Note 2]
* <LI>CP_1251: CS_KOI8_R [Note 2]
* <LI>8859_7: CS_8859_7
* <LI>CP_1253: CS_8859_7
* <LI>MAC_GREEK: CS_8859_7
* <LI>8859_9: CS_8859_9
* <LI>MAC_TURKISH: CS_8859_9
* <LI>UTF8: CS_UTF7
* <LI>UTF7: CS_UTF7
* <LI>UCS2: CS_UTF7
* <LI>UCS2_SWAP: CS_UTF7
* </UL>
* Note:
* <OL>
* <LI>For INTL_DefaultMailCharSetID, this value is different
* <LI>The value is the one specified in preference
* "intl.mailcharset.cyrillic". The default value is CS_KOI_R. See
* <A HREF=http://people.netscape.com/ftang/cyrillicmail.html>
* http://people.netscape.com/ftang/cyrillicmail.html</A> for details.
* </OL>
*
* @param Specifies the encoding
* @return the encoding should be send out for the internet newsgroup.
* @see INTL_DefaultMailCharSetID
*/
PUBLIC int16 INTL_DefaultNewsCharSetID(int16 csid);
/**
* Tell libi18n which font charset IDs are available in the front end.
*
* The front end (FE) calls this function to inform libi18n of the charset IDs
* of the fonts that are currently available.
*
* This function calls INTL_SetUnicodeCSIDList to set up the Unicode
* machinery.
*
* The front end must allocate space for this array using malloc/calloc. If
* this function is called more than once, the array passed in a previous call
* is freed by this function. However, the front end is responsible for
* freeing the array at exit time.
*
* @param charsets Specifies a null-terminated array of charset IDs
*/
PUBLIC void INTL_ReportFontCharSets(
int16 *charsets
);
/**
* Get the "Unconverted Buffer" from the Converter Object.
*
* @param obj Specifies the converter object
* @return the unconverted buffer in the converter object
*/
#define INTL_GetCCCUncvtbuf(obj) (obj->funcs_pointer->get_uncvtbuf)(obj)
/**
* Set the "conversion result length" to the converter object.
*
* @param obj Specifies the converter object
* @param len Specifies the length of current conversion result.
* @see INTLGetCCCLen
*/
#define INTL_SetCCCLen(obj,len) ((obj)->funcs_pointer->set_len)((obj), (len))
/**
* Get the "conversion result length" from the converter object.
*
* @param obj Specifies the converter object
* @return the length of conversion result stored in the converter object
* @see INTL_SetCCCLen
*/
#define INTL_GetCCCLen(obj) ((obj)->funcs_pointer->get_len)(obj)
/**
* Set a private flag "Jismode" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n.
*
* The name "jismode" refers to the ISO 2022 state (JIS mode).
* This is what the field was first used for.
* It is now used for other purposes as well, so the name is no longer
* appropriate.
*
* @param obj Specifies the converter object
* @param jismode Specifies the Jismode
* @see INTL_GetCCCJismode
*/
#define INTL_SetCCCJismode(obj,jismode) \
((obj)->funcs_pointer->set_jismode)((obj), (jismode))
/**
* Get a private flag "Jismode" from the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* The name "jismode" refers to the ISO 2022 state (JIS mode).
* This is what the field was first used for.
* It is now used for other purposes as well, so the name is no longer
* appropriate.
*
* @param obj Specifies the converter object
* @return the Jismode stored in the converter object
* @see INTL_SetCCCJismode
*/
#define INTL_GetCCCJismode(obj) ((obj)->funcs_pointer->get_jismode)(obj)
/**
* Set a private flag "Cvtflag" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param cvtflag Specifies the Cvtflag
* @see INTL_GetCCCCvtflag
*/
#define INTL_SetCCCCvtflag(obj,cvtflag) \
((obj)->funcs_pointer->set_cvtflag)((obj), (cvtflag))
/**
* Get a private flag "Cvtflag" from the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @return the Cvtflag stored in the converter object
* @see INTL_SetCCCCvtflag
*/
#define INTL_GetCCCCvtflag(obj) ((obj)->funcs_pointer->get_cvtflag)(obj)
/**
* Set the "Convert To CSID" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param to_csid Specifies the Convert To CSID
* @see INTL_SetCCCToCSID
*/
#define INTL_SetCCCToCSID(obj,to_csid) \
(((obj)->funcs_pointer->set_to_csid)((obj),(to_csid)))
/**
* Get the "Convert To CSID" from the converter object.
*
* @param obj Specifies the converter object
* @return the "Convert To CSID" stored in the converter object
* @see INTL_SetCCCToCSID
*/
#define INTL_GetCCCToCSID(obj) (((obj)->funcs_pointer->get_to_csid)(obj))
/**
* Set the "Convert From CSID" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param from_csid Specifies the Convert From CSID
* @see INTL_SetCCCFromCSID
*/
#define INTL_SetCCCFromCSID(obj,from_csid) \
(((obj)->funcs_pointer->set_from_csid)((obj),(from_csid)))
/**
* Get the "Convert From CSID" from the converter object.
*
* @param obj Specifies the converter object
* @return the "Convert From CSID" stored in the converter object
* @see INTL_SetCCCFromCSID
*/
#define INTL_GetCCCFromCSID(obj) (((obj)->funcs_pointer->get_from_csid)(obj))
/**
* Set the "Return Value" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param retval Specifies the "Return Value"
* @see INTL_GetCCCRetval
*/
#define INTL_SetCCCRetval(obj,retval) \
(((obj)->funcs_pointer->set_retval)((obj),(retval)))
/**
* Get the "Return Value" from the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @return the "Return Value" stored in the converter object
* @see INTL_SetCCCRetval
*/
#define INTL_GetCCCRetval(obj) (((obj)->funcs_pointer->get_retval)(obj))
/**
* Set the "Conversion Function" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param func Specifies the "Conversion Function" stored in the converter
* object
* @see INTL_GetCCCCvtfunc
*/
#define INTL_SetCCCCvtfunc(obj,func) \
(((obj)->funcs_pointer->set_cvtfunc)((obj),(func)))
/**
* Get the "Conversion Function" from the converter object.
*
* @param obj Specifies the converter object
* @return the "Conversion Function" stored in the converter object
* @see INTL_SetCCCCvtfunc
*/
#define INTL_GetCCCCvtfunc(obj) ((obj)->funcs_pointer->get_cvtfunc)(obj)
/**
* Set the "Report Auto Detect Result Function" to the converter object.
*
* @param obj Specifies the converter object
* @param func Specifies the "Auto Detect Result Reporting Function"
* @param closure Specifies the closure which will be pass to the "Auto
* Detect Result Reporting Function"
* @see INTL_CallCCCReportAutoDetect
*/
#define INTL_SetCCCReportAutoDetect(obj,func,closure) \
(((obj)->funcs_pointer->set_report_autodetect)((obj), (func), (closure)))
/**
* Call the "Report Auto Detect Result Function" associated with the
* converter object.
*
* @param obj Specifies the converter object
* @param doc_csid Specifies the document csid which be auto detected
* @see INTL_CallCCCReportAutoDetect
*/
#define INTL_CallCCCReportAutoDetect(obj,doc_csid) \
(((obj)->funcs_pointer->call_report_autodetect)((obj), (doc_csid)))
/**
* Set the "Default Document CSID" to the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @param default_doc_csid Specifies the Default Document CSID
* @see INTL_GetCCCDefaultCSID
*/
#define INTL_SetCCCDefaultCSID(obj,default_doc_csid) \
((obj)->funcs_pointer->set_default_doc_csid)((obj), (default_doc_csid))
/**
* Get the "Default Document CSID" from the converter object.
*
* There are no reason any code outside libi18n should call this.
* We are considering move this into intlpriv.h.
* Don't call this macro unless you are changing libi18n
*
* @param obj Specifies the converter object
* @return the Default Document CSID stored in the converter object
* @see INTL_GetCCCDefaultCSID
*/
#define INTL_GetCCCDefaultCSID(obj) \
(((obj)->funcs_pointer->get_default_doc_csid)(obj))
/*@}*/
/*=======================================================*/
/**@name CharSetID and Charset Name Mapping */
/*@{*/
/**
* Returns the preferred MIME charset name corresponding to the given
* charset ID.
*
* Charset names are registered by IANA (Internet Assigned Numbers Authority).
* The current charset name database can be found at:
*
* <A HREF=ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets>
* ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets</A>.
*
* This function returns the charset name for the given Character Set ID
* which in most cases corresponds to the "(preferred MIME name)" registered
* with IANA. This function may return private names not found in the
* registered. Private names start with "x-". See INTL_CharSetNameToID for
* information about charset IDs.
*
* @param charSetID Specifies the charset ID
* @param charset_return Returns the corresponding charset name, max 128 bytes
* @see INTL_CharSetNameToID
*/
PUBLIC void INTL_CharSetIDToName(
int16 charSetID,
char *charset_return
);
/**
* Returns the charset ID corresponding to the given charset name.
*
* The charset ID is a private 16-bit integer, described in
* ns/include/csid.h. If the given charset is unknown, CS_UNKNOWN is returned.
* If the given charset is NULL, CS_DEFAULT is returned. Charset names are not
* case-sensitive. See INTL_CharSetIDToName for a description of charset names.
*
* @param charset Specifies the charset name
* @return the corresponding charset ID
* @see INTL_CharSetIDToName
*/
PUBLIC int16 INTL_CharSetNameToID(
char *charset
);
/**
* Returns a pointer to the preferred MIME charset name corresponding
* to the given charset ID.
*
* This function is similar to INTL_CharSetIDToName. It returns a pointer to
* the charset name. See INTL_CharSetIDToName for other details.
*
* @param charSetID Specifies the charset ID
* @return The corresponding charset name
* @see INTL_CharSetIDToName
*/
PUBLIC unsigned char *INTL_CsidToCharsetNamePt(
int16 charSetID
);
/**
* Returns the Java charset name corresponding to the given charset ID.
*
* The Java charset name is one that JDK 1.1 and up will understand.
* The Java name is defined in
* <A HREF=
* http://java.sun.com/products/jdk/1.1/docs/guide/intl/intl.doc.html#25303>
* http://java.sun.com/products/jdk/1.1/docs/guide/intl/intl.doc.html#25303</A>
*
* @param charSetID Specifies the charset ID
* @param charset_return Returns the corresponding Java charset name,
* max 128 bytes
* @see INTL_CharSetIDToJavaCharSetName
*/
PUBLIC void INTL_CharSetIDToJavaName(
int16 charSetID,
char *charset_return
);
/**
* Returns the Java charset name corresponding to the given charset ID.
*
* The Java charset name is a name used in JDK 1.1 and up.
* The Java name is defined in
* <A HREF=
* http://java.sun.com/products/jdk/1.1/docs/guide/intl/intl.doc.html#25303>
* http://java.sun.com/products/jdk/1.1/docs/guide/intl/intl.doc.html#25303</A>
*
* @param charSetID Specifies the charset ID
* @return the corresponding Java charset name
* @see INTL_CharSetIDToJavaName
*/
PUBLIC const char * PR_CALLBACK INTL_CharSetIDToJavaCharSetName(
int16 charSetID
);
/**
* Returns a pointer to the Java charset name corresponding to
* the given charset ID.
*
* This function is similar to INTL_CharSetIDToJavaCharSetName. See
* INTL_CharSetIDToJavaCharSetName for further details.
*
* @param charSetID Specifies the charset ID
* @return The corresponding Java charset name
* @see INTL_CharSetIDToJavaCharSetName
*/
PUBLIC unsigned char *INTL_CsidToJavaCharsetNamePt(
int16 charSetID
);
/*@}*/
/*=======================================================*/
/**@name Character Set Properties */
/*@{*/
/**
* Returns whether or not auto-detection is available for the given charset ID.
*
* For example, this routine will return TRUE for any of the Japanese charset
* IDs, since a Japanese auto-detection routine is available.
*
* @param csid Specifies the charset ID
* @return Whether or not auto-detection is available for the charset ID
* @see INTL_GetCharCodeConverter
*/
PUBLIC XP_Bool INTL_CanAutoSelect(
int16 csid
);
/**
* Returns the charset type.
*
* Returns the type of the given charset ID. The charset types are defined in
* csid.h.
*
* <UL>
* <LI>SINGLEBYTE: single-byte charset (e.g. ISO-8859-1, MacRoman)
* <LI>MULTIBYTE: multi-byte charset (e.g. Shift-JIS, Big5)
* <LI>STATEFUL: stateful charset (e.g. ISO-2022-JP, UTF-7)
* <LI>WIDECHAR: wide character charset (e.g. UCS-2, UCS-4)
* </UL>
*
* @param charsetid Specifies the charset ID.
* @return The charset type.
*/
#define INTL_CharSetType(charsetid) (charsetid & 0x700)
/*@}*/
/*=======================================================*/
/**@name Finding Character Boundaries */
/*@{*/
/**
* Returns the number of bytes in the given character.
*
* This function checks for zero bytes within the text, returning the actual
* length even if the preceding byte(s) would normally indicate a longer
* multibyte character.
*
* @param charSetID Specifies the charset ID of the text
* @param pstr Specifies the 1st byte of the character
* @return The number of bytes in the given character
* @see INTL_IsLeadByte
*/
PUBLIC int INTL_CharLen(
int charSetID,
unsigned char *pstr
);
/**
* Returns number of bytes in given character, minus 1.
*
* This function returns the number of bytes in a character that starts with
* the given byte, minus 1. I.e. for a single-byte character, it returns zero.
* For a double-byte character, it returns 1. And so on. Hence, this function
* returns a non-zero value if the given byte is the "lead byte" of a multibyte
* character.
* This function should not be confused with Windows API isleadbyte().
*
* @param charSetID Specifies the charset ID of the text
* @param ch Specifies the first byte of a character in the text
* @return The number of bytes in the given character, minus 1
* @see INTL_CharLen
*/
PUBLIC int
#ifdef NSPR20
PR_CALLBACK
#endif
INTL_IsLeadByte(
int charSetID,
unsigned char ch
);
/**
* Returns a pointer to the 1st byte of the next character.
*
* This function checks for zero bytes and returns pstr+1 if any are found,
* even if the preceding byte(s) would normally indicate a longer character.
*
* @param charSetID Specifies the charset ID of the text
* @param pstr Specifies the 1st byte of any previous character
* @return The 1st byte of the next character
* @see INTL_CharLen
*/
PUBLIC char *INTL_NextChar(
int charSetID,
char *pstr
);
/**
* Returns the number of the byte pointed to by the given position.
*
* Determines whether the byte at the given position is the 1st, 2nd, 3rd
* or 4th byte of the character at that position. The pstr pointer must point
* to the first byte of any preceding character in the string. The pos
* position must be greater than zero, and is the index into pstr plus one.
* I.e. the byte at pstr[0] has pos 1.
*
* If pos points to the only byte in a single-byte character, this function
* returns zero. Otherwise, if pos points to the 1st byte, it returns 1. If
* pos points to the 2nd byte, it returns 2. And so on.
*
* @param charSetID Specifies the charset ID of the given text
* @param pstr Specifies the beginning of a character in the string
* @param pos Specifies the byte position within the string
* @return The number of the byte at the given position
* @see INTL_CharLen
*/
PUBLIC int INTL_NthByteOfChar(
int charSetID,
char *pstr,
int pos
);
/**
* Returns the byte index of the next character.
*
* Given the position of a character in some text, this function returns the
* position of the next character.
*
* @param charSetID Specifies the charset ID of the text
* @param text Specifies the beginning of the text
* @param pos Specifies the current position within the text
* @return The position of the next character
* @see INTL_PrevCharIdxInText
*/
PUBLIC int INTL_NextCharIdxInText(
int16 charSetID,
unsigned char *text,
int pos
);
/**
* Returns the byte index of the previous character.
*
* Given the position of a character in some text, this function returns the
* position of the previous character.
*
* @param charSetID Specifies the charset ID of the text
* @param text Specifies the beginning of the text
* @param pos Specifies the current position within the text
* @return The position of the previous character
* @see INTL_NextCharIdxInText
*/
PUBLIC int INTL_PrevCharIdxInText(
int16 charSetID,
unsigned char *text,
int pos
);
/**
* Convert number of bytes to number of characters.
*
* Given a number of bytes in a given string, this function determines the
* number of characters.
*
* @param charSetID Specifies the charset ID of the text
* @param text Specifies the text
* @param byteCount Specifies the number of bytes
* @return The number of characters
* @see INTL_TextCharLenToByteCount
*/
PUBLIC int32 INTL_TextByteCountToCharLen(
int16 charSetID,
unsigned char *text,
uint32 byteCount
);
/**
* Convert number of characters to number of bytes.
*
* Given a number of characters in a given string, this function determines the
* number of bytes.
*
* @param charSetID Specifies the charset ID of the text
* @param text Specifies the text
* @param charLen Specifies the number of characters
* @return The number of bytes
* @see INTL_TextByteCountToCharLen
*/
PUBLIC int32 INTL_TextCharLenToByteCount(
int16 charSetID,
unsigned char *text,
uint32 charLen
);
/**
* Returns the byte index of the next character.
*
* Given the position of any byte of any character in some text, this function
* returns the position of the 1st byte of the next character. The
* difference between this function and INTL_NextCharIdxInText is that this
* function will accept the position of any byte of a character rather than
* just the 1st byte of a character.
*
* @param charSetID Specifies the charset ID of the text
* @param str Specifies the beginning of the text
* @param pos Specifies any byte of any character
* @return The index of the next character
* @see INTL_NextCharIdxInText, INTL_PrevCharIdx
*/
PUBLIC int INTL_NextCharIdx(
int16 charSetID,
unsigned char *str,
int pos
);
/**
* Returns the byte index of the previous character.
*
* Given the position of any byte of any character in some text, this function
* returns the position of the 1st byte of the previous character. The
* difference between this function and INTL_PrevCharIdxInText is that this
* function will accept the position of any byte of a character rather than
* just the 1st byte of a character.
*
* @param charSetID Specifies the charset ID of the text
* @param str Specifies the beginning of the text
* @param pos Specifies any byte of any character
* @return The index of the previous character
* @see INTL_PrevCharIdxInText, INTL_NextCharIdx
*/
PUBLIC int INTL_PrevCharIdx(
int16 charSetID,
unsigned char *str,
int pos
);
/*@}*/
/*=======================================================*/
/**@name Single-Byte Charset Conversion Tables (Obsolescent) */
/*@{*/
/**
* Free a single-byte charset conversion table.
*
* This is not really a public function. However, ns/sun-java/awt/macos needs
* it, so we have to put it here.
*
* @see INTL_GetSingleByteTable
* @version DEPRECATED. Obsolescent. Use INTL_DestroyCharCodeConverter instead.
*/
MODULE_PRIVATE void INTL_FreeSingleByteTable(char **cvthdl);
/**
* Get a single-byte charset conversion table.
*
* This is not really a public function. However, ns/sun-java/awt/macos needs
* it, so we have to put it here.
*
* @see INTL_FreeSingleByteTable
* @see INTL_LockTable
* @version DEPRECATED. Obsolescent. Use INTL_GetCharCodeConverter instead.
*/
MODULE_PRIVATE char **INTL_GetSingleByteTable(
int16 fromcsid,
int16 tocsid,
int32 func_ctx
);
/**
* Lock the given single-byte charset conversion table in memory.
*
* This is not really a public function. However, ns/sun-java/awt/macos needs
* it, so we have to put it here.
*
* @see INTL_GetSingleByteTable
* @version DEPRECATED. Obsolescent. See INTL_GetSingleByteTable.
*/
MODULE_PRIVATE char *INTL_LockTable(char **cvthdl);
/*@}*/
/*=======================================================*/
/**@name HTTP Headers */
/*@{*/
/**
* Return the AcceptLanguage preference.
*
* Get the HTTP Accept-Language header from preference settings.
*
* @return Accept-Language header (null-terminated string).
* @see INTL_GetAcceptCharset
*/
PUBLIC char *INTL_GetAcceptLanguage(void);
/**
* Return the AcceptCharset preference.
*
* Get the HTTP Accept-Charset header from preference settings.
*
* @return Accept-Charset header (null-terminated string).
* @see INTL_GetAcceptLanguage
*/
PUBLIC char *INTL_GetAcceptCharset(void);
/*@}*/
/*=======================================================*/
/**@name Message Header Processing */
/*@{*/
/**
* Decode and convert message header.
*
* This is a convenience macro that calls INTL_DecodeMimePartIIStr. It is
* similar to INTL_DecodeMimePartIIStr, with the exception that it always
* attempts to allocate a new buffer instead of returning the original input
* buffer where the decoding/conversion may have been performed in place.
*
* @param r Returns the decoded/converted message header
* @param b Specifies the message header
* @param c Specifies the target window charset ID
* @param f Specifies whether to convert the string into the wincsid or not
* @return the decoded/converted message header (r)
* @see INTL_DecodeMimePartIIStr
*/
#define INTL_DECODE_MIME_PART_II(r,b,c,f) \
(r = INTL_DecodeMimePartIIStr((b),(c),(f))), \
((NULL!=r) && ((r)!=(b))) ? r : (r = XP_STRDUP(b))
/**
* Decode and convert message header.
*
* If the message header contains an RFC 2047 encoded-word, that word is
* decoded. Then it performs charset conversion if the dontConvert parameter is
* false. Otherwise, it will only decode the string and return. The conversion
* may happen later in the process. The flag is needed to work around a double
* conversion problem.
*
* @param header Specifies the message string to be decoded/converted.
* @param wincsid Specifies the target window charset ID.
* @param dontConvert Specifies whether to convert the string into the wincsid
* or not. If the value is true, then it will only decode
* any RFC 2047 encoded-words, without converting their
* charsets. If the value is false, then it will decode RFC
* 2047 encoded-words AND convert them into the specified
* wincsid.
* @return Decoded and/or converted message header. If the return value is
* different from the input buffer, the caller must free the output
* buffer by calling XP_FREE when it is no longer needed.
* @see INTL_DECODE_MIME_PART_II
* @see INTL_EncodeMimePartIIStr
* @see INTL_EncodeMimePartIIStr_VarLen
*/
PUBLIC char *INTL_DecodeMimePartIIStr(
const char *header,
int16 wincsid,
XP_Bool dontConvert
);
/**
* Convert and encode message header.
*
* Convert the string into an encoding used in Internet messages and encode
* them as per RFC 2047. It will (1) perform the codeset conversion and
* (2) RFC 1522 encoding algorithm (if bUseMime is true or the internet message
* encoding is ISO-2022-KR or ISO-2022-JP). This is a restrict version of
* INTL_EncodeMimePartIIStr_VarLen which always use 72 for encodedWordSize
*
* @param header Specifies the RFC 1522 string to be encoded.
* @param wincsid Specifies the source encoding
* @param bUseMime Specifies apply RFC 1522 rule or not. If the value is
* true or the internet message encoding is ISO-2022-JP
* or ISO-2022-KR, then it perform RFC1522 encoding after
* convert the text into the internet message encoding,
* Otherwise, it only convert the text into internet
* message encoding.
* @return the encoded/converted header. The caller need to free this by
* calling XP_FREE when the result is no longer needed.
* @see INTL_DecodeMimePartIIStr
* @see INTL_EncodeMimePartIIStr_VarLen
*/
PUBLIC char *INTL_EncodeMimePartIIStr(
char *header,
int16 wincsid,
XP_Bool bUseMime
);
/**
* Convert and encode text into RFC 1522 header.
*
* Convert the string into the encoding used in internet message and encode
* them into RFC 1522 form. It will (1) perform the codeset conversion and
* (2) RFC 1522 encoding algorithm (if bUseMime is true or the internet message
* encoding is ISO-2022-KR or ISO-2022-JP). It is same as
* INTL_EncodeMimePartIIStr except it allow encodedWordSize value other than 72.
*
* @param header Specifies the RFC 1522 string to be encoded.
* @param wincsid Specifies the source encoding
* @param bUseMime Specifies apply RFC 1522 rule or not. If the value
* is true or the internet message encoding is
* ISO-2022-JP or ISO-2022-KR, then it perform RFC1522
* encoding after convert the text into the internet
* message encoding. Otherwise, it only convert the
* text into internet message encoding.
* @param encodedWordSize Specifies the maximum length of encoded word.
* @return the encoded/converted header. The caller need to free this by
* calling XP_FREE when the result is no longer needed.
* @see INTL_DecodeMimePartIIStr
* @see INTL_EncodeMimePartIIStr
*/
PUBLIC char *INTL_EncodeMimePartIIStr_VarLen(
char * header,
int16 wincsid,
XP_Bool bUseMime,
int encodedWordSize
);
/**
* [OBSOLETE!!!] We should use the INTL_DecodeMimePartIIStr instead of this.
* We keep this Macro until we change all the callers.
* Please do not use this in the future.
*/
#define IntlDecodeMimePartIIStr INTL_DecodeMimePartIIStr
/**
* [OBSOLETE!!!] We should use the INTL_EncodeMimePartIIStr instead of this.
* We keep this Macro until we change all the callers.
* Please do not use this in the future.
*/
#define IntlEncodeMimePartIIStr INTL_EncodeMimePartIIStr
/**
* Set a private flag to remember a state mail/news.
*
* A flag is used inside libi18n to remember whether we are sending mail or
* news. This is because mail encoding and news encoding is different
* for Korean.
* Note that this should be used carefully since it depends on
* the current mail/news implementation.
* This is really a hack. It will be removed in the future.
*
* @param toNews Boolean value to be set to the private flag.
*/
PUBLIC void
INTL_MessageSendToNews(XP_Bool toNews);
/**
* Convert a string from RFC1522 encoded header and normalize it, by dropping
* the case of the character.
*
* The return value could be used with INTL_StrContains, INTL_StrIs,
* INTL_StrBeginWith or INTL_StrEndWith to perform string matching. This
* function will normalize a string by dropping the case of character according
* to the csid the caller passed in. It will also ignore CR and LF characters.
*
* @param csid Specifies the encoding of str
* @param str Specifies the to-be-normalized string.
* @return a normalized string which could be used in INTL_StrContains,
* INTL_StrIs , INTL_StrBeginWith and INTL_StrEndWith The caller
* should free it by calling XP_FREE when it is not needed.
* @see INTL_GetNormalizeStr
* @see INTL_StrContains
* @see INTL_StrIs
* @see INTL_StrBeginWith
* @see INTL_StrEndWith
*/
PUBLIC unsigned char* INTL_GetNormalizeStrFromRFC1522(
int16 csid,
unsigned char* rfc1522header
);
/*@}*/
/*=======================================================*/
/**@name Unicode (UCS-2) Strings */
/*@{*/
/**
* Unicode character typedef.
*
* This is used to represent a 16-bit Unicode (UCS-2) character.
*/
typedef uint16 INTL_Unicode;
/**
* Return the length of a Unicode string.
*
* The given Unicode string must be terminated by U+0000.
*
* @param ustr Specifies the Unicode string
* @return The length of ustr in UCS-2 units, not bytes
*/
PUBLIC uint32 INTL_UnicodeLen(INTL_Unicode *ustr);
/*@}*/
/*=======================================================*/
/**@name Compound Strings */
/*@{*/
/**
* A typedef for encoding IDs (charset IDs).
*
* These are equivalent to charset IDs in the current code base.
*/
typedef uint16 INTL_Encoding_ID;
/*
* See comment below.
*/
typedef struct INTL_CompoundStr INTL_CompoundStr;
/**
* Compound String.
*
* A Compound String is constructed as a linked list. Each node has two fields
* and a pointer to the next node. The two fields store a pointer to a
* uniformly encoded piece of text and the encoding of that text.
*/
struct INTL_CompoundStr {
/** The encoding of the text in this node. */
INTL_Encoding_ID encoding;
/** The uniformly encoded text. */
unsigned char *text;
/** A pointer to the next node. NULL if there are no more nodes. */
INTL_CompoundStr *next;
};
/**
* INTL_CompoundStrIterator should really be opaque, but we need to change the
* callers first.
*/
typedef INTL_CompoundStr *INTL_CompoundStrIterator;
/**
* Construct an INTL_CompoundStr, given some text and its encoding.
*
* Use this with INTL_CompoundStrCat to create multi-encoding
* INTL_CompoundStrs.
*
* @param inencoding Specifies the encoding of intext.
* @param intext Specifies the text to be stored. Null-terminated string.
* @return INTL_CompoundStr. The caller should use INTL_CompoundStrDestroy to
* destroy it when it is no longer needed.
* @see INTL_CompoundStrDestroy
*/
PUBLIC INTL_CompoundStr* INTL_CompoundStrFromStr(
INTL_Encoding_ID inencoding,
unsigned char* intext
);
/**
* Convert the given Unicode string to an INTL_CompoundStr.
*
* This routine uses information provided by the front end through
* INTL_SetUnicodeCSIDList. It converts from Unicode to substrings in the
* encodings that the front end said were available (in the font system).
*
* @param inunicode Specifies the Unicode text to be converted.
* @param inlen Specifies the length of inunicode in UCS-2 units,
* not bytes.
* @return INTL_CompoundStr. The caller should use INTL_CompoundStrDestroy to
* destroy it when it is no longer needed.
* @see INTL_CompoundStrDestroy
*/
PUBLIC INTL_CompoundStr* INTL_CompoundStrFromUnicode(
INTL_Unicode* inunicode,
uint32 inlen
);
/**
* Destroy an INTL_CompoundStr.
*
* This function destroys the INTL_CompoundStr created by
* INTL_CompoundStrFromStr or INTL_CompoundStrFromUnicode.
*
* @param Specifies the INTL_CompoundStr to be destroyed.
* @see INTL_CompoundStrFromStr
* @see INTL_CompoundStrFromUnicode
*/
PUBLIC void INTL_CompoundStrDestroy(INTL_CompoundStr* This);
/**
* Concatenate two INTL_CompoundStrs.
*
* @param s1 Specifies the first INTL_CompoundStr and returns the
* concatenated INTL_CompoundStr
* @param s2 Specifies the second INTL_CompoundStr
* @see INTL_CompoundStrDestroy
*/
PUBLIC void INTL_CompoundStrCat(
INTL_CompoundStr* s1,
INTL_CompoundStr* s2
);
/**
* Clone an INTL_CompoundStr.
*
* This function clones an INTL_CompoundStr.
*
* @param s Specifies the INTL_CompoundStr to be cloned
* @return a cloned INTL_CompoundStr. The caller should use
* INTL_CompoundStrDestroy to destroy it when it is no longer needed.
* @see INTL_CompoundStrDestroy
*/
PUBLIC INTL_CompoundStr* INTL_CompoundStrClone(INTL_CompoundStr* s1);
/**
* Start iterating an INTL_CompoundStr.
*
* Initialize the iterating state and perform the first iteration of an
* INTL_CompoundStr.
*
* @param This Specifies the INTL_CompoundStr to be iterated
* @param outencoding Returns the encoding of the first node
* @param outtext Returns the text of the first node. The caller should
* not free it.
* @return INTL_CompoundStrIterator. The state of the iteration. Should be
* passed to INTL_CompoundStrNextStr. NULL if the iteration is
* finished.
* @see INTL_CompoundStrNextStr
*/
PUBLIC INTL_CompoundStrIterator INTL_CompoundStrFirstStr(
INTL_CompoundStr* This,
INTL_Encoding_ID *outencoding,
unsigned char** outtext
);
/**
* Iterating INTL_CompoundStr.
*
* This function iterates through the INTL_CompoundStr for the given
* INTL_CompoundStrIterator.
*
* @param iterator Specifies the INTL_CompoundStrIterator
* @param outencoding Returns the encoding of the current node
* @param outtext Returns the text of the current node. The caller should
* not free it.
* @return INTL_CompoundStrIterator. The state of the iteration. Should be
* passed to INTL_CompoundStrNextStr. NULL if the iteration is
* finished.
* @see INTL_CompoundStrFirstStr
*/
PUBLIC INTL_CompoundStrIterator INTL_CompoundStrNextStr(
INTL_CompoundStrIterator iterator,
INTL_Encoding_ID *outencoding,
unsigned char** outtext
);
/*@}*/
/*=======================================================*/
/**@name Unicode Conversion */
/*@{*/
/**
* An opaque data object used to iterate through Unicode text for
* conversion to font encodings.
*
* See also the functions that use this object.
*
* @see INTL_UnicodeToStrIteratorCreate
* @see INTL_UnicodeToStrIterate
* @see INTL_UnicodeToStrIteratorDestroy
*
*/
typedef void* INTL_UnicodeToStrIterator ;
/**
* Create an INTL_UnicodeToStrIterator and iterate through it once.
*
* This function creates an INTL_UnicodeToStrIterator and iterates through it
* once to get the first element of Unicode text for font encoding conversion.
* The function uses the prioritized Character Set ID list (CSIDList) to
* decide which font encoding it will convert to. The iteration stops if the
* whole Unicode string is converted. Otherwise, it continues iterating and
* uses the next charset in the CSIDlist to convert the Unicode text.
*
* @param ustr Specifies Unicode string to be converted
* @param ustrlen Specifies length of ustr in UCS-2 units not bytes
* @param encoding Returns the encoding of the first element.
* Returns 0 if there are no more to iterate.
* @param dest Specifies the buffer for output and returns the
* converted string for the first iteration
* @param destbuflen Specifies the length of dest in bytes
* @return Iterator which keeps the iteration state
* @see INTL_GetUnicodeCSIDList
* @see INTL_SetUnicodeCSIDList
* @see INTL_UnicodeToStrIterate
* @see INTL_UnicodeToStrIteratorDestroy
* @see INTL_GetUnicodeCharsetList
*/
PUBLIC INTL_UnicodeToStrIterator INTL_UnicodeToStrIteratorCreate(
INTL_Unicode* ustr,
uint32 ustrlen,
INTL_Encoding_ID *encoding,
unsigned char* dest,
uint32 destbuflen
);
/**
* Iterate through a Unicode object and convert to font encoding.
*
* Iterate the INTL_UnicodeToStrIterator to get Unicode to font encoding
* conversion.
*
* @param iterator Specifies iterator that keeps the last iteration state
* @param encoding Returns the encoding of the first element. Returns 0
* if there are no more to iterate.
* @param dest Specifies the buffer for output and returns the
* converted string for the current iteration
* @param destbuflen Specifies the length of dest in bytes
* @return 0 if there are no more elements to iterate.
* @see INTL_GetUnicodeCSIDList
* @see INTL_SetUnicodeCSIDList
* @see INTL_UnicodeToStrIteratorCreate
* @see INTL_UnicodeToStrIteratorDestroy
* @see INTL_GetUnicodeCharsetList
*/
PUBLIC int INTL_UnicodeToStrIterate(
INTL_UnicodeToStrIterator iterator,
INTL_Encoding_ID *encoding,
unsigned char* dest,
uint32 destbuflen
);
/**
* Destroy an INTL_UnicodeToStrIterator.
*
* This function destroys the INTL_UnicodeToStrIterator created by
* INTL_UnicodeToStrIterateCreate.
*
* @param iterator Specifies the iterator to be destroyed
* @see INTL_GetUnicodeCSIDList
* @see INTL_SetUnicodeCSIDList
* @see INTL_UnicodeToStrIteratorCreate
* @see INTL_UnicodeToStrIterate
* @see INTL_GetUnicodeCharsetList
*/
PUBLIC void INTL_UnicodeToStrIteratorDestroy(
INTL_UnicodeToStrIterator iterator
);
/**
* Return memory requirement for INTL_UnicodeToStr.
*
* Returns the maximum memory required for text converted from a Unicode
* string to a specified encoding. Call this to prepare memory for
* INTL_UnicodeToStr.
*
* @param encoding Specifies the target encoding
* @param ustr Specifies the buffer containing UCS-2 data
* @param ustrlen Specifies the valid length of ustr in UCS-2 units
* not bytes
* @return Number of bytes needed to store the converted result
* @see INTL_UnicodeToStr
*/
PUBLIC uint32 INTL_UnicodeToStrLen(
INTL_Encoding_ID encoding,
INTL_Unicode* ustr,
uint32 ustrlen
);
/**
* Convert Unicode string to a specified encoding.
*
* The caller needs to call INTL_UnicodeToStrLen first to prepare memory and
* pass into dest.
*
* @param encoding Specifies the target encoding
* @param ustr Specifies the buffer containing UCS-2 data
* @param ustrlen Specifies the valid length of ustr in UCS-2 units
* not bytes
* @param dest Specifies the buffer for the converted text and
* returns the converted text
* @param destbuflen Specifies the size of dest in bytes
* @see INTL_UnicodeToStrLen
*/
PUBLIC void INTL_UnicodeToStr(
INTL_Encoding_ID encoding,
INTL_Unicode* ustr,
uint32 ustrlen,
unsigned char* dest,
uint32 destbuflen
);
/**
* Convert Unicode to text in one encoding by trial and error.
*
* This routine tries to convert the given Unicode string into text of one
* non-Unicode encoding. This is a trial and error function which may be
* slow in "THE WORST CASE". However, it does it's best in the best case and
* average case.
*
* @param ustr Specifies the buffer containing UCS-2 data
* @param ustrlen Specifies the valid length of ustr in UCS-2 units
* not bytes
* @param dest Specifies the buffer for the converted text and
* returns the converted text
* @return Encoding of the converted text
*/
PUBLIC INTL_Encoding_ID INTL_UnicodeToEncodingStr(
INTL_Unicode* ustr,
uint32 ustrlen,
unsigned char* dest,
uint32 destbuflen
);
/**
* Return memory requirement for INTL_StrToUnicode.
*
* Return the maximum memory requirement for text converted from the
* specified encoding to Unicode. Call this to prepare memory for
* INTL_StrToUnicode. The difference between INTL_TextToUnicodeLen is
* the input string is specified by a NULL terminated string.
*
* @param encoding Specifies the encoding of text in src
* @param src Specifies the text to be converted
* @return Size of Unicode to store the converted output (in
* UCS-2 units not bytes)
* @see INTL_StrToUnicode
* @see INTL_TextToUnicodeLen
*/
PUBLIC uint32 INTL_StrToUnicodeLen(
INTL_Encoding_ID encoding,
unsigned char* src
);
/**
* Convert non-Unicode text to Unicode.
*
* The caller needs to call INTL_StrToUnicodeLen first to prepare memory and
* pass into ustr. The difference between INTL_TextToUnicode is the input
* string is specified by a NULL terminated string.
*
* @param encoding Specifies the encoding of text in src
* @param src Specifies the text to be converted
* @param ustr Specifies the buffer for Unicode and returns the converted
* Unicode
* @param ubuflen Specifies the size of the ustr in UCS-2 units not bytes
* @return Size of the converted Unicode (in UCS-2 units not bytes)
* @see INTL_StrToUnicodeLen
* @see INTL_TextToUnicode
*/
PUBLIC uint32 INTL_StrToUnicode(
INTL_Encoding_ID encoding,
unsigned char* src,
INTL_Unicode* ustr,
uint32 ubuflen
);
/**
* Return memory requirement for INTL_TextToUnicode.
*
* Return the maximum memory requirement for text converted from a specified
* encoding to Unicode . Call this to prepare memory for INTL_TextToUnicode.
* The difference between INTL_StrToUnicodeLen is the input is not specified
* by a NULL terminated string, but a pointer and length.
*
* @param encoding Specifies the encoding of text in src
* @param src Specifies the text to be converted
* @param srclen Specifies the number of bytes in src
* @return Size of Unicode to store the converted output (in UCS-2
* units not bytes)
* @see INTL_TextToUnicode
* @see INTL_StrToUnicodeLen
*/
PUBLIC uint32 INTL_TextToUnicodeLen(
INTL_Encoding_ID encoding,
unsigned char* src,
uint32 srclen
);
/**
* Convert text from non-Unicode to Unicode.
*
* The caller needs to call INTL_TextToUnicodeLen first to prepare memory and
* pass into ustr. The difference between INTL_StrToUnicode is the input is
* not specified by a NULL terminated string, but a pointer and length.
*
* @param encoding Specifies the encoding of text in src
* @param src Specifies the text to be converted
* @param srclen Specifies the number of bytes in src
* @param ustr Specifies the buffer for the Unicode string and returns
* the converted Unicode string
* @param ubuflen Specifies the size of the ustr in the UCS-2 units not
* bytes
* @return Size of converted Unicode (in UCS-2 units not bytes)
* @see INTL_TextToUnicodeLen
* @see INTL_StrToUnicode
*/
PUBLIC uint32 INTL_TextToUnicode(
INTL_Encoding_ID encoding,
unsigned char* src,
uint32 srclen,
INTL_Unicode* ustr,
uint32 ubuflen
);
/**
* Initial Unicode conversion routines from a list of Character Set ID (CSID)
* for Unicode rendering.
*
* It should only be called once in the application life time. It should be
* called by front end before calling any other Unicode conversion functions.
* The list could be retrieved through INTL_GetUnicodeCSIDList or
* INTL_GetUnicodeCharsetList.
*
* @param numberOfItem Specifies the valid number in the csidlist
* @param csidlist Specifies a prioritized list of csid to be used for
* Unicode to font charset conversion. The function will
* make a copy of the list the caller pass in. The caller
* could free the pass in list after this function.
* @ see INTL_GetUnicodeCSIDList
* @ see INTL_UnicodeToStrIteratorCreate
* @ see INTL_UnicodeToStrIterate
* @ see INTL_UnicodeToStrIteratorDestroy
* @ see INTL_GetUnicodeCharsetList
*/
PUBLIC void INTL_SetUnicodeCSIDList(
uint16 numOfItems,
int16 *csidlist);
/**
* Returns a list of Character Set ID (CSID) used for converting Unicode
* to font encoding.
*
* The list is set in the initialization time by the front end through
* INTL_SetUnicodeCSIDList. The only difference between INTL_GetUnicodeCSIDList
* and INTL_GetUnicodeCharsetList is that INTL_GetUnicodeCSIDList returns a
* list of CSIDs and the INTL_GetUnicodeCharsetList returns a list of charset
* names (strings).
*
* @param outnum Returns the number of items in the returned CSID array.
* @return Array of CSIDs. Caller should change or free the returned array.
* @see INTL_SetUnicodeCSIDList
* @see INTL_UnicodeToStrIteratorCreate
* @see INTL_UnicodeToStrIterate
* @see INTL_UnicodeToStrIteratorDestroy
* @see INTL_GetUnicodeCharsetList
*/
PUBLIC int16* INTL_GetUnicodeCSIDList(int16 * outnum);
/**
* Return a list of charset names (strings) used for converting Unicode to font
* encoding.
*
* The list is set in the initialization time by front end through
* INTL_SetUnicodeCSIDList. The only difference between INTL_GetUnicodeCSIDList
* and INTL_GetUnicodeCharsetList is that INTL_GetUnicodeCSIDList returns a
* list of CSIDs and INTL_GetUnicodeCharsetList returns a list of charset
* names (strings).
*
* @param outnum Returns the number of items in the returned charset array
* @return Array of charset names. Caller should not change or free the
* returned array.
* @see INTL_GetUnicodeCSIDList
* @see INTL_SetUnicodeCSIDList
* @see INTL_UnicodeToStrIteratorCreate
* @see INTL_UnicodeToStrIterate
* @see INTL_UnicodeToStrIteratorDestroy
*/
PUBLIC unsigned char **INTL_GetUnicodeCharsetList(int16 * outnum);
/**
* Converts a UTF-8 sub-string to the appropriate font encoding.
*
* Converts characters until the encoding changes or
* input/output space runs out.
*
* The segment is NOT NULL TERMINATED
*
* @param utf8p Specifies the UTF-8 string
* @param utf8len Specifies the length of utf8p
* @param LE_string Specifies and returns the (pre-allocated) buffer
* for the string converted to the font encoding
* @param LE_string_len Specifies the length of the buffer for LE_string
* @param LE_written_len Returns the valid length of the return LE_string
* @param LE_string_csid Returns the CSID of the return LE_string:
* <UL>
* <LI>
* >0 if successful (valid CSID).
* <LI>
* -1 if not Unicode.
* <LI>
* -2 if no font encoding.
* </UL>
* @return Length of converted UTF-8 string
*/
PUBLIC int utf8_to_local_encoding(
const unsigned char *utf8p,
const int utf8len,
unsigned char *LE_string,
int LE_string_len,
int *LE_written_len,
int16 *LE_string_csid
);
/**
* Convert text from UTF-8 to UCS-2 encoding.
*
* UCS-2 is the abbreviation for the two byte form of Unicode.
* UTF-8 is a transformation encoding for Unicode.
* For more information about UTF-8 look at RFC 2279 in
* <A HREF=ftp://ds.internic.net/rfc/rfc2279.txt>
* ftp://ds.internic.net/rfc/rfc2279.txt</A> .
* For more information about UCS-2, look at <A HREF=http://www.unicode.org>
* http://www.unicode.org</A>.
*
* @param utf8p Specifies the UTF-8 text buffer. It is NULL terminated.
* @param num_chars Returns the length of the converted UCS-2 in UCS-2 units
* not bytes
* @return UCS-2 string, NULL terminated by U+0000, or NULL. The
* caller should free it by calling XP_FREE when it is no
* longer needed.
* @see INTL_UCS2ToUTF8
*/
PUBLIC UNICVTAPI uint16 *INTL_UTF8ToUCS2(
const unsigned char *utf8p,
int32 *num_chars
);
/**
* Convert text from UCS-2 to UTF-8 encoding.
*
* UCS-2 is the abbreviation for the two byte form of Unicode.
* UTF-8 is a transformation encoding for Unicode.
* For more information about UTF-8 look at RFC 2279 in
* <A HREF=ftp://ds.internic.net/rfc/rfc2279.txt>
* ftp://ds.internic.net/rfc/rfc2279.txt</A> .
* For more information about UCS-2, look at <A HREF= http://www.unicode.org>
* http://www.unicode.org</A>.
*
* @param ucs2p Specifies the UCS-2 text buffer
* @param num_chars Specifies the length of ucs2p, in UCS-2 units not bytes
* @return NULL terminated UTF-8 string or NULL. The caller should
* free it by calling XP_FREE when it is no longer needed.
* @see INTL_UTF8ToUCS2
*/
PUBLIC UNICVTAPI unsigned char *INTL_UCS2ToUTF8(
const uint16 *ucs2p,
int32 num_chars
);
/*@}*/
/*=======================================================*/
/**@name String Comparison */
/*@{*/
/**
* Case insensitive comparison.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly. It also ignore case by considering the charset
* it used.
*
* @param charSetID Specifies the encoding of text1 and text2.
* @param text1 Specifies address of text1.
* @param text2 Specifies address of text2.
* @param charlen Returns the length in byte of text1.
* @return true if the text1 and text2 point to the same character,
* ignoring the case, false otherwise.
* @see INTL_MatchOneCaseChar
* @see INTL_Strstr
* @see INTL_Strcasestr
*/
PUBLIC XP_Bool INTL_MatchOneChar(
int16 charSetID,
unsigned char *text1,
unsigned char *text2,
int *charlen
);
/**
* Case sensitive comparison.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly.
*
* @param charSetID Specifies the encoding of text1 and text2.
* @param text1 Specifies address of text1.
* @param text2 Specifies address of text2.
* @param charlen Returns length in bytes of text1.
* @return true if the text1 and text2 point to the same character (same case),
* false otherwise.
* @see INTL_MatchOneChar
* @see INTL_Strstr
* @see INTL_Strcasestr
*/
PUBLIC XP_Bool INTL_MatchOneCaseChar(
int16 charSetID,
unsigned char *text1,
unsigned char *text2,
int *charlen
);
/**
* Case sensitive sub-string search.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly.
*
* @param charSetID Specifies the encoding of s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return NULL if s1 does not contains s2,
* otherwise, return the address of the sub-string in s1.
* @see INTL_MatchOneChar
* @see INTL_MatchOneCaseChar
* @see INTL_Strcasestr
*/
PUBLIC char *INTL_Strstr(
int16 charSetID,
const char *s1,
const char *s2
);
/**
* Case insensitive sub-string search.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly. It also ignore case by considering the charset it
* used.
*
* @param charSetID Specifies the encoding of s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return NULL if s1 does not contains s2,
* otherwise, return the address of the sub-string in s1.
* @see INTL_MatchOneChar
* @see INTL_MatchOneCaseChar
* @see INTL_Strstr
*/
PUBLIC char *INTL_Strcasestr(
int16 charSetID,
const char *s1,
const char *s2
);
/*
Function to support correct mail/news comparison:
INTL_GetNormalizeStr
INTL_GetNormalizeStrFromRFC1522
INTL_StrContains
INTL_StrIs
INTL_StrBeginWith
INTL_StrEndWith
Example:
XP_Bool MailHeaderContains(csid, header, str)
{
XP_Bool result = FALSE;
unsigned char* n_str = INTL_GetNormalizeStr(csid, str);
unsigned char* n_header = INTL_GetNormalizeStrFromRFC1522(csid, header);
if((NULL != n_str) && (NULL != n_header))
result = INTL_StrContains(csid, n_header, n_str);
if(n_str)
XP_FREE(n_str);
if(n_header)
XP_FREE(n_header);
return result;
}
*/
/**
* Normalize a string, by dropping the case of the characters.
*
* The return value could be used with INTL_StrContains, INTL_StrIs,
* INTL_StrBeginWith or INTL_StrEndWith to perform string matching. This
* function normalizes a string by dropping the case of character according to
* the charSetID the caller passed in. It also ignores CR and LF characters.
*
* @param charSetID Specifies the encoding of str
* @param str Specifies the to-be-normalized string.
* @return a normalized string which could be used in INTL_StrContains,
* INTL_StrIs, INTL_StrBeginWith and INTL_StrEndWith The caller should
* free it by calling XP_FREE when it is not needed.
* @see INTL_GetNormalizeStrFromRFC1522
* @see INTL_StrContains
* @see INTL_StrIs
* @see INTL_StrBeginWith
* @see INTL_StrEndWith
*/
PUBLIC unsigned char* INTL_GetNormalizeStr(
int16 charSetID,
unsigned char* str
);
/**
* Test if string s1 contains string s2.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly. To do string matching with ignoring the case of
* character, call INTL_GetNormalizeStr (or INTL_GetNormalizeStrFromRFC1522)
* before call this function.
*
* @param charSetID Specifies the encoding for s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return true if s1 contains s2,
* false otherwise
* @see INTL_GetNormalizeStr
* @see INTL_GetNormalizeStrFromRFC1522
* @see INTL_StrIs
* @see INTL_StrBeginWith
* @see INTL_StrEndWith
*/
PUBLIC XP_Bool INTL_StrContains(
int16 charSetID,
unsigned char* str1,
unsigned char* str2
);
/**
* Test if string s1 is string s2.
*
* This function is multibyte charset safe. It will consider characters boundary
* correctly. To do string matching with ignoring the case of character, call
* INTL_GetNormalizeStr (or INTL_GetNormalizeStrFromRFC1522) before calling this
* function.
*
* @param charSetID Specifies the encoding for s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return true if two string are equal, false otherwise
* @see INTL_GetNormalizeStr
* @see INTL_GetNormalizeStrFromRFC1522
* @see INTL_StrContains
* @see INTL_StrBeginWith
* @see INTL_StrEndWith
*/
PUBLIC XP_Bool INTL_StrIs(
int16 charSetID,
unsigned char* str1,
unsigned char* str2
);
/**
* Test if string s1 begin with string s2.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly. To do string matching with ignoring the case of
* character, call INTL_GetNormalizeStr (or INTL_GetNormalizeStrFromRFC1522)
* before calling this function.
*
* @param charSetID Specifies the encoding for s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return true if the first string is begin with the second string,
* false otherwise
* @see INTL_GetNormalizeStr
* @see INTL_GetNormalizeStrFromRFC1522
* @see INTL_StrContains
* @see INTL_StrIs
* @see INTL_StrEndWith
*/
PUBLIC XP_Bool INTL_StrBeginWith(
int16 charSetID,
unsigned char* str1,
unsigned char* str2
);
/**
* Test if string s1 end with string s2.
*
* This function is multibyte charset safe. It will consider characters
* boundary correctly. To do string matching with ignoring the case of
* character, call INTL_GetNormalizeStr (or INTL_GetNormalizeStrFromRFC1522)
* before calling this function.
*
* @param charSetID Specifies the encoding for s1 and s2.
* @param s1 Specifies the first string
* @param s2 Specifies the second string
* @return true if the first string is end with the second string, false
* otherwise.
* @see INTL_GetNormalizeStr
* @see INTL_GetNormalizeStrFromRFC1522
* @see INTL_StrContains
* @see INTL_StrIs
* @see INTL_StrBeginWith
*/
PUBLIC XP_Bool INTL_StrEndWith(
int16 charSetID,
unsigned char* str1,
unsigned char* str2
);
/**
* Decode, convert and create a message header. Then create and return a collatable string.
*
* If the message header contains an RFC 2047 encoded-word, that word is
* decoded. Then it performs charset conversion to window charset ID.
* Finally, it creates and returns a machine collatable string (calls INTL_CreateCollationKeyByDefaultLocale)
* which can be compared by INTL_Compare_CollationKey.
*
* @param header Specifies the message string to be decoded/converted.
* @param wincsid Specifies the target window charset ID.
* @param collation_flag For future enhancement, pass 0 for now.
* @return A null terminated string collatable by INTL_Compare_CollationKey.
* The caller must free the output buffer by calling XP_FREE when it is no longer needed.
* @see INTL_DECODE_MIME_PART_II,INTL_Compare_CollationKey,INTL_CreateCollationKeyByDefaultLocale
*/
char *INTL_DecodeMimePartIIAndCreateCollationKey(const char *header, int16 wincsid, int32 collation_flag);
/**
* Create a collation key using default sytem locale.
*
* By using default system locale, this creates and returns a machine collatable string
* which can be compared by INTL_Compare_CollationKey.
*
* @param in_string Input string for a key generation.
* @param wincsid Specifies the target window charset ID.
* @param collation_flag For future enhancement, pass 0 for now.
* @return A null terminated string collatable by INTL_Compare_CollationKey.
* The caller must free the output buffer by calling XP_FREE when it is no longer needed.
* @see INTL_DecodeMimePartIIAndCreateCollationKey,INTL_Compare_CollationKey
*/
char *INTL_CreateCollationKeyByDefaultLocale(const char *in_string, int16 wincsid, int32 collation_flag);
/**
* Compare two collation keys.
*
* Compare two collation keys generated by INTL_CreateCollationKeyByDefaultLocale.
*
* @param key1 Null terminated string.
* @param key2 Null terminated string.
* @return <0 if key1 less than key2
* 0 if key1 equals to key2
* >0 if key1 greater than key2
* @see INTL_DecodeMimePartIIAndCreateCollationKey,INTL_Compare_CollationKey
*/
int INTL_Compare_CollationKey(const char *key1, const char *key2);
/**
* Return a (hacky) XPAT pattern for NNTP server for searching pre
* RFC 1522 message header.
*
* This is a hacky function which try to work around another HACK!!! The
* problem it tries to solve is to search on NNTP, internet newsgroup server.
* Unfortunately, the NNTP server does not have non-ASCII text searching
* command. The only functionality in the NNTP protocol we could use is the
* XPAT extension of NNTP (see
* <A HREF=ftp://ds.internic.net/internet-drafts/draft-ietf-nntpext-imp-01.txt>
* ftp://ds.internic.net/internet-drafts/draft-ietf-nntpext-imp-01.txt</A> or
* <A HREF=ftp://ds.internic.net/internet-drafts/draft-barber-nntp-imp-07.txt>
* ftp://ds.internic.net/internet-drafts/draft-barber-nntp-imp-07.txt</A> ).
* XPAT use wildmat regular expression (see <A HREF=
* http://oac.hsc.uth.tmc.edu/oac_sysadmin/services/INN/man/wildmat.3.html>
* http://oac.hsc.uth.tmc.edu/oac_sysadmin/services/INN/man/wildmat.3.html</A>
* for details) to provide string matching. Unfortunately, wildmat is not
* designed to support non-ASCII text. It work for English header but not for
* header in other language like Japanese, French, or German. The problem is
* the XPAT/wildmat cannot deal with (1) ISO-2022-xx encoding nor (2) RFC 1522
* header. To work around the limitation in the protocol, we put together this
* function to support the first limitation as possible as we can. This
* function take one search string, and return a XPAT pattern which could then
* be used to send to NNTP XPAT as search argument. However, there are some
* limitation here. (1) It may cause NNTP return more message than it should,
* the reason is the XPAT won't respect to the multibyte character boundary
* when it try to match the string. To improve this in the future, the client
* double check the header after it receive message from the server and narrow
* it down to the correct case. (2) The pattern it generated won't match RFC
* 1522 header so it could return less message than it should. This is because
* there are more than one XPAT could match the sting in the case of RFC 1522
* header. To improve this in the future, the client side should send several
* possible XPAT patterns (with the patterned return by this function), collect
* the result, and then double checking in the client side. Of course, improve
* the NNTP protocol itself is the real solution. But the improvement stated
* above is also needed for the server support the current NNTP protocol. This
* function (1) convert the text from the encoding the argument specified into
* the encoding used in the corresponding internet newsgroup, (2) strip out
* leading or trailing ISO-2022 escape sequence if present, (3) escape the
* wildmat special characters (any characters which is not from 0-9, a-z, A-Z),
* and return.
*
* @param winCharSetID Specifies the encoding of searchString.
* @param searchString Specifies the string to be search through NNTP XPAT
* command.
* @return the pattern should be send to NNTP XPAT command for searching
* non-ASCII header. The caller need to free this by calling XP_FREE
* when the result is no longer needed.
*/
PUBLIC unsigned char* INTL_FormatNNTPXPATInNonRFC1522Format(
int16 winCharSetID,
unsigned char* searchString
);
/*@}*/
/*=======================================================*/
/**@name Charset ID Iterator */
/*@{*/
/**
* An object that can iterate through a list of charset ID.
*
* @see INTL_CSIDIteratorCreate
* @see INTL_CSIDIteratorDestroy
* @see INTL_CSIDIteratorNext
*/
typedef void* INTL_CSIDIterator;
/**
* Returns a new iterator object to search charset IDs for a particular
* conversion.
*
* This function searches a built-in table to look for charset converters
* that could be used for a particular purpose. The only purpose currently
* supported is the IMAP4 conversion. This function puts the mail and news
* charset IDs corresponding to the given charset ID at the top of the list
* of IDs to try. After that, it inserts the "to" charset IDs of all entries
* matching the given "from" ID.
*
* @param iterator_return Returns a new iterator object
* @param charSetID Specifies the charset ID to convert from
* @param flag Specifies the type of conversion
* Currently, the only valid value is
* csiditerate_TryIMAP4Search .
*
* @see INTL_CSIDIteratorNext, INTL_CSIDIteratorDestroy
*/
PUBLIC void INTL_CSIDIteratorCreate(
INTL_CSIDIterator *iterator,
int16 charSetID,
int flag
);
/**
* Frees the given iterator, and sets given pointer to NULL.
*
* This function destroys the object created by INTL_CSIDIteratorCreate.
*
* @param iterator Specifies the iterator object to destroy
* @see INTL_CSIDIteratorCreate
*/
PUBLIC void INTL_CSIDIteratorDestroy(
INTL_CSIDIterator *iterator
);
/**
* Returns the next charset ID in the given iterator, if any.
*
* The return value is TRUE if a charset ID was found. The charset ID
* is returned in pCharSetID. Otherwise, the return value is FALSE, and
* pCharSetID remains untouched.
*
* @param iterator Specifies the iterator object
* @param pCharSetID Returns the next charset ID
* @return TRUE if there are more elements to be iterate, otherwise FALSE
* @see INTL_CSIDIteratorCreate, INTL_CSIDIteratorDestroy
*/
PUBLIC XP_Bool INTL_CSIDIteratorNext(
INTL_CSIDIterator *iterator,
int16 *pCharSetID
);
/*@}*/
/*=======================================================*/
/**@name Line/Word Breaking */
/*@{*/
/**
* Line breaking information.
*
* <UL>
* <LI>
* PROHIBIT_NOWHERE -
* It is a breakable character. It could be break before
* or after this character. This class is for all
* Kanji ideographic character.
* <LI>
* PROHIBIT_BEGIN_OF_LINE -
* It should not appeared in the beginning of the line.
* <LI>
* PROHIBIT_END_OF_LINE -
* It should not appeared in the end of the line.
* <LI>
* PROHIBIT_WORD_BREAK -
* It is non breakable character. It cannot be break
* if the next (or previous) character is also
* PROHIBIT_WORD_BREAK.
* </UL>
*
* @see INTL_KinsokuClass
*/
enum LINE_WRAP_PROHIBIT_CLASS{
PROHIBIT_NOWHERE,
PROHIBIT_BEGIN_OF_LINE,
PROHIBIT_END_OF_LINE,
PROHIBIT_WORD_BREAK
};
/**
* Basic Japanese word breaking information.
*
* <UL>
* <LI>
* SEVEN_BIT_CHAR - e.g. ASCII
* <LI>
* HALFWIDTH_PRONOUNCE_CHAR - e.g. Japanese Katakana
* <LI>
* FULLWIDTH_ASCII_CHAR - e.g. ASCII in JIS
* <LI>
* FULLWIDTH_PRONOUNCE_CHAR - e.g. Japanese Hiragana, Katakana
* <LI>
* KANJI_CHAR - ideographic
* <LI>
* UNCLASSIFIED_CHAR - others
* </UL>
*
* @see INTL_CharClass
*/
enum WORD_BREAK_CLASS{
SEVEN_BIT_CHAR,
HALFWIDTH_PRONOUNCE_CHAR,
FULLWIDTH_ASCII_CHAR,
FULLWIDTH_PRONOUNCE_CHAR,
KANJI_CHAR,
UNCLASSIFIED_CHAR
};
/**
* Returns the code point that represent the non-breaking space character.
*
* The current implementation return the same value regardless of the given
* charset. However, the return value is platform dependent.
* The information then is used by parser and layout code.
*
* Using this function with caution as it is tied to
* the current HTML parser implementation.
*
* @param winCharSetID Specifies the window charset id.
* @return the code point which Non Breaking Space in a
* C style NULL terminated string.
* @see
*/
PUBLIC const char *INTL_NonBreakingSpace(
uint16 winCharSetID
);
/**
* Returns information for basic Japanese word breaking.
*
* Given a character pointer and charset, returns a word breaking
* character class for the given character.
* It is necessary to pass a pointer because the
* character may be more than one byte.
*
* In the future, the definition of word breaking classes needs to be
* extended.
*
* @param winCharSetID Specifies the window charset ID
* @param pstr Specifies the pointer to the character
* @return Character class for word breaking:
* <UL>
* <LI>
* SEVEN_BIT_CHAR - e.g. ASCII
* <LI>
* HALFWIDTH_PRONOUNCE_CHAR - e.g. Japanese Katakana
* <LI>
* FULLWIDTH_ASCII_CHAR - e.g. ASCII in JIS
* <LI>
* FULLWIDTH_PRONOUNCE_CHAR - e.g. Japanese Hiragana, Katakana
* <LI>
* KANJI_CHAR - ideographic
* <LI>
* UNCLASSIFIED_CHAR - others
* </UL>
* @see INTL_KinsokuClass
* @see WORD_BREAK_CLASS
*/
PUBLIC int INTL_CharClass(
int winCharSetID,
unsigned char *pstr
);
/**
* Returns line breaking information.
*
* Given a character pointer and charset, returns a line breaking
* character class for the given character.
* It is necessary to pass a pointer because the
* character may be more than one byte.
*
*
* Please notice that the function currently only supports multibyte charsets.
* If this is called for ascii charset, it always return PROHIBIT_WORD_BREAK.
*
* References for line breaking:
* <UL>
* <LI>
* Japanese Standard Association,
* JIS X 4501 1995 - Japanese Industrial Standard -
* Line Composition rules for Japanese documents
* <LI>
* Ken Lunde,
* Understanding Japanese Information Processing,
* O'Reilly &amp; Associates, Inc.,
* ISBN:1-56592-043-0,
* pp.148
* <LI>
* Nadine Kano,
* Developing International Software For Windows 95 and Windows NT,
* Microsoft Press,
* ISBN:1-556-15-840-8,
* pp.239-244
* </UL>
*
*
* @param winCharSetID Specifies window charset ID.
* @param pstr Specifies the pointer to the character
* @return the kinsoku class for line breaking:
* <UL>
* <LI>
* PROHIBIT_NOWHERE -
* It is a breakable character. It could be break before
* or after this character. This class is for all
* Kanji ideographic character.
* <LI>
* PROHIBIT_BEGIN_OF_LINE -
* It should not appeared in the beginning of the line.
* <LI>
* PROHIBIT_END_OF_LINE -
* It should not appeared in the end of the line.
* <LI>
* PROHIBIT_WORD_BREAK -
* It is non breakable character. It cannot be break
* if the next (or previous) character is also
* PROHIBIT_WORD_BREAK.
* </UL>
* @see INTL_CharClass
* @see LINE_WRAP_PROHIBIT_CLASS
*/
PUBLIC int INTL_KinsokuClass(
int16 winCharSetID,
unsigned char *pstr
);
/**
* Returns the column width of the given character.
*
* In some countries, old terminals use full-width and half-width characters.
* This function returns the number of "columns" taken up by the given
* character. For example, in Japan, normal characters take up 2 columns,
* while half-width characters take up 1 column each.
*
* Returns 1 for charsets that do not distinguish between half-width and
* full-width characters.
*
* @param winCharSetID Specifies the charset ID of the text
* @param pstr Specifies the character
* @return The column width of the given character
* @see INTL_IsHalfWidth
*/
PUBLIC int INTL_ColumnWidth(
int winCharSetID,
unsigned char *pstr
);
/**
* Truncates a long string by replacing excess characters in the middle
* with "&#46;&#46;&#46;".
*
* The output_return pointer may be the same as the input pointer.
*
* @param winCharSetID Specifies the charset ID of the text
* @param input Specifies the text to be mid-truncated
* @param output_return Returns the mid-truncated text
* @param max_length Specifies the desired number of bytes to be placed in
* the output buffer, minus 1 for null terminator
*/
PUBLIC void INTL_MidTruncateString(
int16 winCharSetID,
const char *input,
char *output_return,
int max_length
);
/**
* Returns whether or not the given character is a half-width character.
*
* In some countries, certain characters are normal width on old terminals,
* while other characters are half-width. For example, normal Japanese
* characters are considered normal width, while "hankaku kana" are
* half-width, as are the ASCII characters.
*
* @param winCharSetID Specifies the charset ID of the text
* @param pstr Specifies the character
* @return
* 0 if the given character is ASCII or the charset do not normally
* distinguish between half-width and full-width,
* 1 if the given character is half-width
* @see INTL_ColumnWidth
*/
PUBLIC int INTL_IsHalfWidth(
uint16 winCharSetID,
unsigned char *pstr
);
/*@}*/
/*=======================================================*/
/**@name Document Context Handling */
/*@{*/
/**
* Request a re-layout of the document.
*
* Libi18n calls this function in those cases where a different document
* encoding is detected after document conversion and layout has begun.
* This can occur because the parsing and layout of the document begins
* immediately when the document data begins to stream in - at which time
* all the data needed to determine the charset may not be available. If
* this occurs, the layout engine needs to be notified to pull the data from
* the source (cache) again so the data will be converted by the correct
* character codeset conversion module in the data stream.
*
* @param context Specifies the context which should be relayout again.
*/
PUBLIC void
INTL_Relayout(iDocumentContext context);
/**
* Returns name of the document charset.
*
* The returned string is suitable for use in the window brought up by
* View | Page Info (previously known as Document Info). It also provides
* information such as whether this charset was auto-detected.
*
* @param doc_context Specifies the document context
* @return Name (string) of the document charset
*/
PUBLIC char *INTL_CharSetDocInfo(
iDocumentContext doc_context
);
/**
* Get the UI charset encoding setting.
*
* Gets the currently selected charset encoding for this document
* (not the global default and not the detected document encoding).
*
* @param context Specifies document context
* @return Document charset ID selected by the user
* @see
*/
PUBLIC uint16 FE_DefaultDocCharSetID(
iDocumentContext context
);
/**
* Change the default document charset ID.
*
* This function is currently only implemented and called by the Windows
* platform. It will be removed in the future to keep the consistency between
* platforms.
*
* @param defaultDocCharSetID Specifies the new default document charset ID
* @version DEPRECATED. Do not use this function.
*/
#if defined(XP_WIN) || defined(XP_OS2)
PUBLIC void
INTL_ChangeDefaultCharSetID(int16 defaultDocCharSetID);
#endif
/**
* Return default charset from preference or from current encoding
* menu selection.
*
* @param context Specifies the context
* @return Default document charset ID. If the context is NULL
* then it returns default charset from the user preference.
* If the context is specified then it returns current
* encoding menu selection.
*/
PUBLIC int16
INTL_DefaultDocCharSetID(iDocumentContext context);
/**
* Returns the default window charset ID for the given document context.
*
* If context is NULL, or the context's window charset ID is zero, this
* function calls INTL_DefaultWinCharSetID, passing the same context.
*
* @param context Specifies the document context
* @return The default window charset ID for this document context
* @see INTL_DefaultWinCharSetID
*/
PUBLIC int16 INTL_DefaultTextAttributeCharSetID(
iDocumentContext context
);
/**
* Returns the default window charset ID for the given document context.
*
* If context is NULL, or if the context's window charset ID is zero, this
* function calls INTL_DefaultDocCharSetID, passing the same context, and then
* calls INTL_DocToWinCharSetID on the result.
*
* @param context Specifies the document context
* @return Default window charset ID for this document context
* @see INTL_DefaultDocCharSetID, INTL_DocToWinCharSetID
*/
PUBLIC int16 INTL_DefaultWinCharSetID(
iDocumentContext context
);
/**
* Set up the charset conversion stream module.
*
* This function gets the charset info object from the context, and then
* picks up the relayout flag and the document charset ID before calling
* INTL_CSIInitialize. It then creates the appropriate charset converter
* to convert from the document to window charset. The stream is set up
* by setting the various function pointers (put, abort, complete, etc).
* It then hooks up to the next stream module "INTERNAL_PARSER", the HTML
* parser and layout engine. This is done by rewriting URL_s' content_type
* field.
*
* @param format_out Specifies the type of stream
* @param data_obj Ignored
* @param URL_s Specifies the URL object
* @param window_id Specifies the context
* @return Stream object corresponding to this charset conversion module
* @see INTL_CSIInitialize, NET_StreamBuilder
*/
PUBLIC Stream *INTL_ConvCharCode(
int format_out,
void *data_obj,
URL *URL_s,
iDocumentContext window_id
);
/**
* Converts mail charset to display charset used by current window.
*
* It decides which display charset to use based on current default language.
* Caller is responsible for deallocating memory.
*
* @param context the context (window ID).
* @param bit7buff Source buffer.
* @param block_size the length of the source buffer.
* @return Destination buffer. If NULL, this means either conversion failed or
* did single-byte to single-byte conversion.
*/
PUBLIC unsigned char *INTL_ConvMailToWinCharCode(
iDocumentContext context,
unsigned char *bit7buff,
uint32 block_size
);
/*@}*/
/*=======================================================*/
/**@name Platform Independent String Resources */
/*@{*/
/**
* Return the Charset name of the translated resource.
*
* @return MIME charset of the cross-platform string resource and FE
* resources
* @see XP_GetString
* @see XP_GetStringForHTML
*/
PUBLIC char *
INTL_ResourceCharSet(void);
/*@}*/
/*=======================================================*/
XP_END_PROTOS
#endif /* INTL_LIBI18N_H */
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