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81 lines
2.5 KiB
C
81 lines
2.5 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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/* autokr.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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MODULE_PRIVATE int16 intl_detect_KCSID( uint16 defaultCSID, const unsigned char *buf, int32 len )
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{
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register const unsigned char *cp = buf;
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/* CS_2022_KR is 7bit. Scan to end of 7bit data or legitimate KOREAN ESC sequence. */
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while( len && !( *cp & 0x80 ) ){
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/* CS_2022_KR ESC $ ) C */
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if(( cp[0] == ESC && len > 3 && ( cp[1] == '$' && cp[2] == ')' && cp[3] == 'C' ) ) ||
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(SI == *cp) || (SO == *cp) )
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return CS_2022_KR;
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cp++, len--;
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}
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if( len > 0 ) return CS_KSC_8BIT; /* it is not Roman */
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return CS_ASCII; /* Could be any of the 3... */
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}
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/* Auto Detect Korean Char Code Conversion : jliu */
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MODULE_PRIVATE unsigned char *
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autoKCCC (CCCDataObject obj, const unsigned char *s, int32 l)
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{
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int16 doc_csid = 0;
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/* Use 1st stream data block to guess doc Korean CSID. */
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doc_csid = intl_detect_KCSID (INTL_GetCCCDefaultCSID(obj),(const unsigned char *) s, l);
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if( doc_csid == CS_ASCII ){ /* return s unconverted and */
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INTL_SetCCCLen(obj, l);
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return (unsigned char *)s; /* autodetect next block of stream data */
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}
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/* Setup converter function for success streams data blocks */
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(void)INTL_GetCharCodeConverter( doc_csid, INTL_GetCCCToCSID(obj), obj );
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INTL_CallCCCReportAutoDetect(obj, doc_csid);
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/* If no conversion needed, change put_block module for successive
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* data blocks. For current data block, return unmodified buffer.
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*/
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if (INTL_GetCCCCvtfunc(obj) == NULL) {
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INTL_SetCCCLen(obj, l);
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return((unsigned char *) s);
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}
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/* For initial block, must call converter directly. Success calls
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* to the converter will be called directly from net_CharCodeConv()
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*/
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return (unsigned char *)(INTL_GetCCCCvtfunc(obj)) (obj, (const unsigned char*)s, l);
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}
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