713 lines
24 KiB
C
713 lines
24 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "unicpriv.h"
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/*=================================================================================
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=================================================================================*/
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typedef int (*uSubGeneratorFunc) (uint16_t in, unsigned char* out);
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/*=================================================================================
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=================================================================================*/
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typedef int (*uGeneratorFunc) (
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uGenerate(
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uScanClassID scanClass,
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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#define uSubGenerator(sub,in,out) (* m_subgenerator[sub])((in),(out))
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int uCheckAndGenAlways1Byte(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGenAlways2Byte(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGenAlways2ByteShiftGR(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uGenerateShift(
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uShiftOutTable *shift,
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8F(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA2(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA3(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA4(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA5(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA6(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen2ByteGRPrefix8EA7(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCnGAlways8BytesDecomposedHangul(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGenJohabHangul(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGenJohabSymbol(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uCheckAndGen4BytesGB18030(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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);
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int uGenAlways2Byte(
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uint16_t in,
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unsigned char* out
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);
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int uGenAlways2ByteShiftGR(
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uint16_t in,
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unsigned char* out
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);
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int uGenAlways1Byte(
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uint16_t in,
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unsigned char* out
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);
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int uGenAlways1BytePrefix8E(
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uint16_t in,
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unsigned char* out
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);
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/*=================================================================================
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=================================================================================*/
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const uGeneratorFunc m_generator[uNumOfCharsetType] =
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{
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uCheckAndGenAlways1Byte,
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uCheckAndGenAlways2Byte,
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uCheckAndGenAlways2ByteShiftGR,
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uCheckAndGen2ByteGRPrefix8F,
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uCheckAndGen2ByteGRPrefix8EA2,
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uCheckAndGen2ByteGRPrefix8EA3,
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uCheckAndGen2ByteGRPrefix8EA4,
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uCheckAndGen2ByteGRPrefix8EA5,
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uCheckAndGen2ByteGRPrefix8EA6,
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uCheckAndGen2ByteGRPrefix8EA7,
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uCnGAlways8BytesDecomposedHangul,
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uCheckAndGenJohabHangul,
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uCheckAndGenJohabSymbol,
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uCheckAndGen4BytesGB18030,
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uCheckAndGenAlways2Byte /* place-holder for GR128 */
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};
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/*=================================================================================
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=================================================================================*/
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const uSubGeneratorFunc m_subgenerator[uNumOfCharType] =
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{
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uGenAlways1Byte,
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uGenAlways2Byte,
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uGenAlways2ByteShiftGR,
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uGenAlways1BytePrefix8E
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};
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/*=================================================================================
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=================================================================================*/
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int uGenerate(
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uScanClassID scanClass,
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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return (* m_generator[scanClass]) (state,in,out,outbuflen,outlen);
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}
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/*=================================================================================
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=================================================================================*/
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int uGenAlways1Byte(
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uint16_t in,
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unsigned char* out
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)
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{
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out[0] = (unsigned char)in;
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return 1;
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}
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/*=================================================================================
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=================================================================================*/
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int uGenAlways2Byte(
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uint16_t in,
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unsigned char* out
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)
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{
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out[0] = (unsigned char)((in >> 8) & 0xff);
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out[1] = (unsigned char)(in & 0xff);
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return 1;
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}
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/*=================================================================================
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=================================================================================*/
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int uGenAlways2ByteShiftGR(
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uint16_t in,
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unsigned char* out
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)
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{
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out[0] = (unsigned char)(((in >> 8) & 0xff) | 0x80);
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out[1] = (unsigned char)((in & 0xff) | 0x80);
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return 1;
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}
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/*=================================================================================
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=================================================================================*/
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int uGenAlways1BytePrefix8E(
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uint16_t in,
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unsigned char* out
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)
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{
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out[0] = 0x8E;
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out[1] = (unsigned char)(in & 0xff);
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return 1;
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGenAlways1Byte(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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/* Don't check inlen. The caller should ensure it is larger than 0 */
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/* Oops, I don't agree. Code changed to check every time. [CATA] */
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if(outbuflen < 1)
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return 0;
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else
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{
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*outlen = 1;
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out[0] = in & 0xff;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGenAlways2Byte(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 2)
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return 0;
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else
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{
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*outlen = 2;
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out[0] = ((in >> 8 ) & 0xff);
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out[1] = in & 0xff;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGenAlways2ByteShiftGR(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 2)
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return 0;
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else
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{
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*outlen = 2;
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out[0] = ((in >> 8 ) & 0xff) | 0x80;
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out[1] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uGenerateShift(
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uShiftOutTable *shift,
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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int16_t i;
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const uShiftOutCell* cell = &(shift->shiftcell[0]);
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int16_t itemnum = shift->numOfItem;
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unsigned char inH, inL;
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inH = (in >> 8) & 0xff;
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inL = (in & 0xff );
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for(i=0;i<itemnum;i++)
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{
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if( ( inL >= cell[i].shiftout_MinLB) &&
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( inL <= cell[i].shiftout_MaxLB) &&
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( inH >= cell[i].shiftout_MinHB) &&
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( inH <= cell[i].shiftout_MaxHB) )
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{
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if(outbuflen < cell[i].reserveLen)
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{
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return 0;
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}
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else
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{
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*outlen = cell[i].reserveLen;
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return (uSubGenerator(cell[i].classID,in,out));
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}
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}
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}
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return 0;
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8F(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 3)
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return 0;
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else
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{
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*outlen = 3;
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out[0] = 0x8F;
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out[1] = ((in >> 8 ) & 0xff) | 0x80;
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out[2] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA2(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA2;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA3(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA3;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA4(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA4;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA5(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA5;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA6(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA6;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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int uCheckAndGen2ByteGRPrefix8EA7(int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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if(outbuflen < 4)
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return 0;
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else
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{
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*outlen = 4;
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out[0] = 0x8E;
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out[1] = 0xA7;
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out[2] = ((in >> 8 ) & 0xff) | 0x80;
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out[3] = (in & 0xff) | 0x80;
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return 1;
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}
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}
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/*=================================================================================
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=================================================================================*/
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#define SBase 0xAC00
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#define LCount 19
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#define VCount 21
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#define TCount 28
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#define NCount (VCount * TCount)
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/*=================================================================================
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=================================================================================*/
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int uCnGAlways8BytesDecomposedHangul(
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int32_t* state,
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uint16_t in,
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unsigned char* out,
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uint32_t outbuflen,
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uint32_t* outlen
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)
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{
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static const uint8_t lMap[LCount] = {
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0xa1, 0xa2, 0xa4, 0xa7, 0xa8, 0xa9, 0xb1, 0xb2, 0xb3, 0xb5,
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0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe
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};
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static const uint8_t tMap[TCount] = {
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0xd4, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa9, 0xaa,
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0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb4, 0xb5,
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0xb6, 0xb7, 0xb8, 0xba, 0xbb, 0xbc, 0xbd, 0xbe
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};
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uint16_t SIndex, LIndex, VIndex, TIndex;
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if(outbuflen < 8)
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return 0;
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/* the following line are copy from Unicode 2.0 page 3-13 */
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/* item 1 of Hangul Syllabel Decomposition */
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SIndex = in - SBase;
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/* the following lines are copy from Unicode 2.0 page 3-14 */
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/* item 2 of Hangul Syllabel Decomposition w/ modification */
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LIndex = SIndex / NCount;
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VIndex = (SIndex % NCount) / TCount;
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TIndex = SIndex % TCount;
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/*
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* A Hangul syllable not enumerated in KS X 1001 is represented
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* by a sequence of 8 bytes beginning with Hangul-filler
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* (0xA4D4 in EUC-KR and 0x2454 in ISO-2022-KR) followed by three
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* Jamos (2 bytes each the first of which is 0xA4 in EUC-KR) making
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* up the syllable. ref. KS X 1001:1998 Annex 3
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*/
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*outlen = 8;
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out[0] = out[2] = out[4] = out[6] = 0xa4;
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out[1] = 0xd4;
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out[3] = lMap[LIndex] ;
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out[5] = (VIndex + 0xbf);
|
|
out[7] = tMap[TIndex];
|
|
|
|
return 1;
|
|
}
|
|
|
|
int uCheckAndGenJohabHangul(
|
|
int32_t* state,
|
|
uint16_t in,
|
|
unsigned char* out,
|
|
uint32_t outbuflen,
|
|
uint32_t* outlen
|
|
)
|
|
{
|
|
if(outbuflen < 2)
|
|
return 0;
|
|
else
|
|
{
|
|
/*
|
|
See Table 4-45 (page 183) of CJKV Information Processing
|
|
for detail explanation of the following table.
|
|
*/
|
|
/*
|
|
static const uint8_t lMap[LCount] = {
|
|
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
|
|
};
|
|
Therefore lMap[i] == i+2;
|
|
*/
|
|
|
|
static const uint8_t vMap[VCount] = {
|
|
/* no 0,1,2 */
|
|
3,4,5,6,7, /* no 8,9 */
|
|
10,11,12,13,14,15, /* no 16,17 */
|
|
18,19,20,21,22,23, /* no 24,25 */
|
|
26,27,28,29
|
|
};
|
|
static const uint8_t tMap[TCount] = {
|
|
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17, /* no 18 */
|
|
19,20,21,22,23,24,25,26,27,28,29
|
|
};
|
|
uint16_t SIndex, LIndex, VIndex, TIndex, ch;
|
|
/* the following line are copy from Unicode 2.0 page 3-13 */
|
|
/* item 1 of Hangul Syllabel Decomposition */
|
|
SIndex = in - SBase;
|
|
|
|
/* the following lines are copy from Unicode 2.0 page 3-14 */
|
|
/* item 2 of Hangul Syllabel Decomposition w/ modification */
|
|
LIndex = SIndex / NCount;
|
|
VIndex = (SIndex % NCount) / TCount;
|
|
TIndex = SIndex % TCount;
|
|
|
|
*outlen = 2;
|
|
ch = 0x8000 |
|
|
((LIndex+2)<<10) |
|
|
(vMap[VIndex]<<5)|
|
|
tMap[TIndex];
|
|
out[0] = (ch >> 8);
|
|
out[1] = ch & 0x00FF;
|
|
#if 0
|
|
printf("Johab Hangul %x %x in=%x L=%d V=%d T=%d\n", out[0], out[1], in, LIndex, VIndex, TIndex);
|
|
#endif
|
|
return 1;
|
|
}
|
|
}
|
|
int uCheckAndGenJohabSymbol(
|
|
int32_t* state,
|
|
uint16_t in,
|
|
unsigned char* out,
|
|
uint32_t outbuflen,
|
|
uint32_t* outlen
|
|
)
|
|
{
|
|
if(outbuflen < 2)
|
|
return 0;
|
|
else
|
|
{
|
|
/* The following code are based on the Perl code listed under
|
|
* "ISO-2022-KR or EUC-KR to Johab Conversion" (page 1013)
|
|
* in the book "CJKV Information Processing" by
|
|
* Ken Lunde <lunde@adobe.com>
|
|
*
|
|
* sub convert2johab($) { # Convert ISO-2022-KR or EUC-KR to Johab
|
|
* my @euc = unpack("C*", $_[0]);
|
|
* my ($fe_off, $hi_off, $lo_off) = (0,0,1);
|
|
* my @out = ();
|
|
* while(($hi, $lo) = splice(@euc, 0, 2)) {
|
|
* $hi &= 127; $lo &= 127;
|
|
* $fe_off = 21 if $hi == 73;
|
|
* $fe_off = 34 if $hi == 126;
|
|
* ($hi_off, $lo_off) = ($lo_off, $hi_off) if ($hi <74 or $hi >125);
|
|
* push(@out, ((($hi+$hi_off) >> 1)+ ($hi <74 ? 200:187)- $fe_off),
|
|
* $lo + ((($hi+$lo_off) & 1) ? ($lo > 110 ? 34:16):128));
|
|
* }
|
|
* return pack("C*", @out);
|
|
*/
|
|
|
|
unsigned char fe_off = 0;
|
|
unsigned char hi_off = 0;
|
|
unsigned char lo_off = 1;
|
|
unsigned char hi = (in >> 8) & 0x7F;
|
|
unsigned char lo = in & 0x7F;
|
|
if(73 == hi)
|
|
fe_off = 21;
|
|
if(126 == hi)
|
|
fe_off = 34;
|
|
if( (hi < 74) || ( hi > 125) )
|
|
{
|
|
hi_off = 1;
|
|
lo_off = 0;
|
|
}
|
|
*outlen = 2;
|
|
out[0] = ((hi+hi_off) >> 1) + ((hi<74) ? 200 : 187 ) - fe_off;
|
|
out[1] = lo + (((hi+lo_off) & 1) ? ((lo > 110) ? 34 : 16) :
|
|
128);
|
|
#if 0
|
|
printf("Johab Symbol %x %x in=%x\n", out[0], out[1], in);
|
|
#endif
|
|
return 1;
|
|
}
|
|
}
|
|
int uCheckAndGen4BytesGB18030(
|
|
int32_t* state,
|
|
uint16_t in,
|
|
unsigned char* out,
|
|
uint32_t outbuflen,
|
|
uint32_t* outlen
|
|
)
|
|
{
|
|
if(outbuflen < 4)
|
|
return 0;
|
|
out[0] = (in / (10*126*10)) + 0x81;
|
|
in %= (10*126*10);
|
|
out[1] = (in / (10*126)) + 0x30;
|
|
in %= (10*126);
|
|
out[2] = (in / (10)) + 0x81;
|
|
out[3] = (in % 10) + 0x30;
|
|
*outlen = 4;
|
|
return 1;
|
|
}
|