| /********************************************************************** |
| // @@@ START COPYRIGHT @@@ |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| // @@@ END COPYRIGHT @@@ |
| **********************************************************************/ |
| /* |
| * HISTORY |
| * $Log: from_GBK.c,v $ |
| * Revision 1.1.12.1 2001/12/07 15:37:40 |
| * * Add __UDC_to_gbk() to map UDC to GBK code. |
| * |
| * Revision 1.1.8.1 2000/12/12 14:16:19 |
| * Add UDC checking code in GBK to UCS conversion routine. |
| * |
| * Revision 1.1.6.1 2000/01/13 20:25:31 |
| * Remove the old conversion routine in favor of the enhanced |
| * __<codeset>_index() routine, and add algorithmic UDC conversion |
| * support. Also add a number of conversion routines to support |
| * special font charset to Unicode conversion. |
| * |
| * Revision 1.1.4.1 1999/09/28 21:10:12 |
| * Cosixsteelos to zincos merge. |
| * |
| * Revision 1.1.2.2 1999/08/18 18:36:12 |
| * Add support for Unicode to GBK/GB2312 conversion. |
| * [1999/08/18 15:04:47 Long_Man] |
| * |
| * $EndLog$ |
| */ |
| |
| #include "fcconv.h" |
| #include "multi-byte.h" |
| |
| /* |
| * This routine converts one GBK character from the input stream to table |
| * index. |
| * |
| * Return Value: |
| * Table index if no error |
| * -1 - Invalid sequence (EILSEQ) |
| * -2 - Input incomplete |
| */ |
| int |
| __gbk_index(_LC_fcconv_iconv_t * cd, uchar_t **in, int len) |
| { |
| uint ch1, ch2 ; |
| uchar *ip ; |
| |
| if (len < 2) |
| return(ERR_INPUT_INCOMPLETE) ; |
| |
| ip = *in ; |
| ch1 = *ip++ ; |
| ch2 = *ip++ ; |
| |
| if (!GBK_VALID1(ch1) || !GBK_VALID2(ch2)) |
| return(ERR_INVALID_CHAR) ; |
| |
| *in = ip ; /* Adjust input pointer */ |
| if (GBK_PLANE1(ch1, ch2)) |
| { |
| if (GBK_UDC11(ch1, ch2) || GBK_UDC12(ch1, ch2)) |
| return(GBK_IDXU1(ch1, ch2)) ; |
| return(GBK_IDX1(ch1, ch2)) ; |
| } |
| else if (GBK_PLANE2(ch1, ch2)) |
| { |
| return(GBK_IDX2(ch1, ch2)) ; |
| } |
| else /* GBK_PLANE3(ch1, ch2) */ |
| { |
| if (GBK_UDC3(ch1, ch2)) |
| return(GBK_IDXU3(ch1, ch2)) ; |
| return(GBK_IDX3(ch1, ch2)) ; |
| } |
| } |
| |
| /* |
| * This routine performs the conversion from a GBK code to GBK:GLGR |
| * code. |
| */ |
| int |
| __gbk_to_gbkglgr(WChar_t code) |
| { |
| if (code > 0xff) |
| return(code) ; |
| return(BAD) ; |
| } |
| |
| /* |
| * This routine maps UDC characters in Unicode to those in GBK |
| */ |
| WChar_t |
| __UDC_to_gbk(ucs4_t ucs) |
| { |
| int uidx = UCS_UIDX(ucs) ; |
| #if 0 /* Unused - and our C++ compiler complains */ |
| long gb4 ; |
| int gb4idx ; |
| #endif |
| |
| if (uidx < GBK_UCNT) |
| return(UIDX_GBK(uidx)) ; |
| /* |
| * Perform table lookup for other BMP UDCs |
| */ |
| return((uidx >= UCS_UCNT) ? BAD : 0) ; |
| } |
| |
