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363 lines
8.4 KiB
C
363 lines
8.4 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* cvchcode.c */
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#include "intlpriv.h"
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#include "xp.h"
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#include "libi18n.h"
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extern cscvt_t cscvt_tbl[];
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struct RealCCCDataObject {
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struct INTL_CCCFuncs *funcs_pointer;
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CCCRADFunc report_autodetect;
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void *autodetect_closure;
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CCCFunc cvtfunc;
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int32 jismode;
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int32 cvtflag; /* cvt func dependent flag */
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unsigned char uncvtbuf[UNCVTBUF_SIZE];
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uint16 default_doc_csid;
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int16 from_csid;
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int16 to_csid;
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int retval; /* error value for return */
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int32 len; /* byte len of converted buf */
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};
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/*
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* report_autodetect
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*/
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PRIVATE void
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CallCCCReportAutoDetect(CCCDataObject obj, uint16 detected_doc_csid)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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if (c->report_autodetect)
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(c->report_autodetect)(c->autodetect_closure, obj, detected_doc_csid);
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}
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PRIVATE void
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SetCCCReportAutoDetect(CCCDataObject obj,
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CCCRADFunc report_autodetect,
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void *autodetect_closure)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->report_autodetect = report_autodetect;
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c->autodetect_closure = autodetect_closure;
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}
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/*
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* cvtfunc
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*/
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PRIVATE CCCFunc
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GetCCCCvtfunc(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->cvtfunc;
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}
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PRIVATE void
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SetCCCCvtfunc(CCCDataObject obj, CCCFunc cvtfunc)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->cvtfunc = cvtfunc;
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}
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/*
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* jismode
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*/
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PRIVATE int32
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GetCCCJismode(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->jismode;
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}
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PRIVATE void
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SetCCCJismode(CCCDataObject obj, int32 jismode)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->jismode = jismode;
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}
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/*
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* cvtflag
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*/
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PRIVATE int32
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GetCCCCvtflag(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->cvtflag;
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}
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PRIVATE void
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SetCCCCvtflag(CCCDataObject obj, int32 cvtflag)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->cvtflag = cvtflag;
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}
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/*
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* uncvtbuf
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*/
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PRIVATE unsigned char*
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GetCCCUncvtbuf(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->uncvtbuf;
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}
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/*
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* len
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*/
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PRIVATE int32
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GetCCCLen(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->len;
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}
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PRIVATE void
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SetCCCLen(CCCDataObject obj, int32 len)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->len = len;
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}
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/*
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* retval
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*/
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PRIVATE int
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GetCCCRetval(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->retval;
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}
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PRIVATE void
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SetCCCRetval(CCCDataObject obj, int retval)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->retval = retval;
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}
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/*
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* default_doc_csid
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*/
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PRIVATE void
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SetCCCDefaultCSID(CCCDataObject obj, uint16 default_doc_csid)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->default_doc_csid = default_doc_csid;
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}
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PRIVATE uint16
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GetCCCDefaultCSID(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->default_doc_csid;
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}
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/*
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* from_csid
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*/
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PRIVATE uint16
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GetCCCFromCSID(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->from_csid;
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}
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PRIVATE void
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SetCCCFromCSID(CCCDataObject obj, uint16 from_csid)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->from_csid = from_csid;
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}
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/*
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* to_csid
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*/
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PRIVATE uint16
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GetCCCToCSID(CCCDataObject obj)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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return c->to_csid;
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}
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PRIVATE void
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SetCCCToCSID(CCCDataObject obj, uint16 to_csid)
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{
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struct RealCCCDataObject *c = (struct RealCCCDataObject *)obj;
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c->to_csid = to_csid;
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}
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PUBLIC unsigned char *
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INTL_CallCharCodeConverter(CCCDataObject obj, const unsigned char *buf,
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int32 bufsz)
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{
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return (INTL_GetCCCCvtfunc(obj))(obj, buf, bufsz);
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}
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/* INTL_GetCharCodeConverter:
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* RETURN: 1 if converter found, else 0
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* Also, sets:
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* obj->cvtfunc: function handle for chararcter
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* code set streams converter
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* obj->cvtflag: (Optional) flag to converter
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* function
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* obj->from_csid: Code set converting from
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* obj->to_csid: Code set converting to
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* If the arg to_csid==0, then use the the conversion for the
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* first conversion entry that matches the from_csid.
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*/
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PUBLIC int
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INTL_GetCharCodeConverter( register int16 from_csid,
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register int16 to_csid,
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CCCDataObject obj)
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{
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register cscvt_t *cscvtp;
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if (from_csid == CS_DEFAULT)
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INTL_SetCCCFromCSID(obj, INTL_GetCCCDefaultCSID(obj));
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else
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INTL_SetCCCFromCSID(obj, from_csid);
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if(to_csid == 0) /* unknown TO codeset */
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to_csid = INTL_DocToWinCharSetID(from_csid);
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INTL_SetCCCToCSID(obj, to_csid);
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/* Look-up conversion method given FROM and TO char. code sets */
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cscvtp = cscvt_tbl;
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while (cscvtp->from_csid) {
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if ((cscvtp->from_csid == from_csid) && (cscvtp->to_csid == to_csid))
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break;
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cscvtp++;
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}
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INTL_SetCCCCvtflag(obj, cscvtp->cvtflag);
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INTL_SetCCCCvtfunc(obj, cscvtp->cvtmethod);
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return (INTL_GetCCCCvtfunc(obj)) ? 1 : 0;
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}
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/* WARNING: THIS TABLE AND THE STRUCT MUST BE IN SYNC WITH EACH OTHER */
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PRIVATE struct INTL_CCCFuncs ccc_funcs = {
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/* set_report_autodetect */ SetCCCReportAutoDetect,
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/* call_report_autodetect */ CallCCCReportAutoDetect,
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/* set_cvtfunc */ SetCCCCvtfunc,
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/* get_cvtfunc */ GetCCCCvtfunc,
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/* set_jismode */ SetCCCJismode,
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/* get_jismode */ GetCCCJismode,
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/* set_cvtflag */ SetCCCCvtflag,
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/* get_cvtflag */ GetCCCCvtflag,
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/* get_uncvtbuf */ GetCCCUncvtbuf,
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/* set_default_doc_csid */ SetCCCDefaultCSID,
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/* get_default_doc_csid */ GetCCCDefaultCSID,
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/* set_from_csid */ SetCCCFromCSID,
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/* get_from_csid */ GetCCCFromCSID,
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/* set_to_csid */ SetCCCToCSID,
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/* get_to_csid */ GetCCCToCSID,
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/* set_retval */ SetCCCRetval,
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/* get_retval */ GetCCCRetval,
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/* set_len */ SetCCCLen,
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/* get_len */ GetCCCLen
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};
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PUBLIC CCCDataObject
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INTL_CreateCharCodeConverter()
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{
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struct RealCCCDataObject *obj;
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obj = XP_NEW_ZAP(struct RealCCCDataObject);
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obj->funcs_pointer = &ccc_funcs;
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obj->default_doc_csid = INTL_DefaultDocCharSetID(0);
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return (CCCDataObject) obj;
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}
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PUBLIC void
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INTL_DestroyCharCodeConverter(CCCDataObject obj)
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{
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XP_FREE(obj);
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}
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PRIVATE unsigned char *intl_conv (int16 fromcsid, int16 tocsid, unsigned char *pSrc, uint32 block_size);
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PRIVATE
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unsigned char *intl_conv(int16 fromcsid, int16 tocsid, unsigned char *pSrc, uint32 block_size)
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{
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CCCDataObject obj;
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unsigned char *pDest = NULL;
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if (NULL != (obj = INTL_CreateCharCodeConverter()))
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{
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if(0 != INTL_GetCharCodeConverter(fromcsid, tocsid, obj))
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{
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CCCFunc cvtfunc;
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if (NULL != (cvtfunc = INTL_GetCCCCvtfunc(obj)))
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{
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if(pSrc == (pDest = (unsigned char *)cvtfunc(obj, pSrc, block_size)) )
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{
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/* if it use the same buffer to do conversion, we return NULL */
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pDest = NULL;
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}
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}
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}
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INTL_DestroyCharCodeConverter(obj);
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}
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return pDest ;
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}
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PUBLIC unsigned char *
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INTL_ConvertLineWithoutAutoDetect (int16 fromcsid, int16 tocsid, unsigned char *pSrc, uint32 block_size)
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{
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#ifdef XP_OS2
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if (fromcsid != tocsid)
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{
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return intl_conv(fromcsid, tocsid, pSrc, block_size);
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else
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{
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return XP_STRDUP(pSrc);
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}
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#else
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return intl_conv(fromcsid, tocsid, pSrc, block_size);
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#endif /* XP_OS2 */
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}
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