/*
**********************************************************************
* Copyright (C) 2000-2007, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* file name: ucnvisci.c
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2001JUN26
* created by: Ram Viswanadha
*
* Date Name Description
* 24/7/2001 Ram Added support for EXT character handling
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_CONVERSION && !UCONFIG_NO_LEGACY_CONVERSION
#include "cmemory.h"
#include "ucnv_bld.h"
#include "unicode/ucnv.h"
#include "ucnv_cnv.h"
#include "unicode/ucnv_cb.h"
#include "unicode/uset.h"
#include "cstring.h"
#define UCNV_OPTIONS_VERSION_MASK 0xf
#define NUKTA 0x093c
#define HALANT 0x094d
#define ZWNJ 0x200c /* Zero Width Non Joiner */
#define ZWJ 0x200d /* Zero width Joiner */
#define INVALID_CHAR 0xffff
#define ATR 0xEF /* Attribute code */
#define EXT 0xF0 /* Extension code */
#define DANDA 0x0964
#define DOUBLE_DANDA 0x0965
#define ISCII_NUKTA 0xE9
#define ISCII_HALANT 0xE8
#define ISCII_DANDA 0xEA
#define ISCII_INV 0xD9
#define ISCII_VOWEL_SIGN_E 0xE0
#define INDIC_BLOCK_BEGIN 0x0900
#define INDIC_BLOCK_END 0x0D7F
#define INDIC_RANGE (INDIC_BLOCK_END - INDIC_BLOCK_BEGIN)
#define VOCALLIC_RR 0x0931
#define LF 0x0A
#define ASCII_END 0xA0
#define NO_CHAR_MARKER 0xFFFE
#define TELUGU_DELTA DELTA * TELUGU
#define DEV_ABBR_SIGN 0x0970
#define DEV_ANUDATTA 0x0952
#define EXT_RANGE_BEGIN 0xA1
#define EXT_RANGE_END 0xEE
typedef enum {
DEVANAGARI =0,
BENGALI,
GURMUKHI,
GUJARATI,
ORIYA,
TAMIL,
TELUGU,
KANNADA,
MALAYALAM,
DELTA=0x80
}UniLang;
/**
* Enumeration for switching code pages if <ATR>+<one of below values>
* is encountered
*/
typedef enum {
DEF = 0x40,
RMN = 0x41,
DEV = 0x42,
BNG = 0x43,
TML = 0x44,
TLG = 0x45,
ASM = 0x46,
ORI = 0x47,
KND = 0x48,
MLM = 0x49,
GJR = 0x4A,
PNJ = 0x4B,
ARB = 0x71,
PES = 0x72,
URD = 0x73,
SND = 0x74,
KSM = 0x75,
PST = 0x76
}ISCIILang;
typedef enum{
DEV_MASK =0x80,
PNJ_MASK =0x40,
GJR_MASK =0x20,
ORI_MASK =0x10,
BNG_MASK =0x08,
KND_MASK =0x04,
MLM_MASK =0x02,
TML_MASK =0x01,
ZERO =0x00
}MaskEnum;
#define ISCII_CNV_PREFIX "ISCII,version="
typedef struct{
UChar contextCharToUnicode; /* previous Unicode codepoint for contextual analysis */
UChar contextCharFromUnicode; /* previous Unicode codepoint for contextual analysis */
uint16_t defDeltaToUnicode; /* delta for switching to default state when DEF is encountered */
uint16_t currentDeltaFromUnicode;/* current delta in Indic block */
uint16_t currentDeltaToUnicode; /* current delta in Indic block */
MaskEnum currentMaskFromUnicode; /* mask for current state in toUnicode */
MaskEnum currentMaskToUnicode; /* mask for current state in toUnicode */
MaskEnum defMaskToUnicode; /* mask for default state in toUnicode */
UBool isFirstBuffer; /* boolean for fromUnicode to see if we need to announce the first script */
UBool resetToDefaultToUnicode; /* boolean for reseting to default delta and mask when a newline is encountered*/
char name[sizeof(ISCII_CNV_PREFIX) + 1];
}UConverterDataISCII;
typedef struct LookupDataStruct
{
UniLang uniLang;
MaskEnum maskEnum;
ISCIILang isciiLang;
} LookupDataStruct;
static const LookupDataStruct lookupInitialData[]={
{ DEVANAGARI, DEV_MASK, DEV },
{ BENGALI, BNG_MASK, BNG },
{ GURMUKHI, PNJ_MASK, PNJ },
{ GUJARATI, GJR_MASK, GJR },
{ ORIYA, ORI_MASK, ORI },
{ TAMIL, TML_MASK, TML },
{ TELUGU, KND_MASK, TLG },
{ KANNADA, KND_MASK, KND },
{ MALAYALAM, MLM_MASK, MLM }
};
static void
_ISCIIOpen(UConverter *cnv, const char *name,const char *locale,uint32_t options, UErrorCode *errorCode){
cnv->extraInfo = uprv_malloc (sizeof (UConverterDataISCII));
if(cnv->extraInfo != NULL) {
int32_t len=0;
UConverterDataISCII *converterData=(UConverterDataISCII *) cnv->extraInfo;
converterData->contextCharToUnicode=NO_CHAR_MARKER;
cnv->toUnicodeStatus = missingCharMarker;
converterData->contextCharFromUnicode=0x0000;
converterData->resetToDefaultToUnicode=FALSE;
/* check if the version requested is supported */
if((options & UCNV_OPTIONS_VERSION_MASK) < 9){
/* initialize state variables */
converterData->currentDeltaFromUnicode=converterData->currentDeltaToUnicode=
converterData->defDeltaToUnicode=
(uint16_t)(lookupInitialData[options & UCNV_OPTIONS_VERSION_MASK].uniLang * DELTA);
converterData->currentMaskFromUnicode = converterData->currentMaskToUnicode =
converterData->defMaskToUnicode=lookupInitialData[options & UCNV_OPTIONS_VERSION_MASK].maskEnum;
converterData->isFirstBuffer=TRUE;
(void)uprv_strcpy(converterData->name, ISCII_CNV_PREFIX);
len = (int32_t)uprv_strlen(converterData->name);
converterData->name[len]= (char)((options & UCNV_OPTIONS_VERSION_MASK) + '0');
converterData->name[len+1]=0;
}else{
uprv_free(cnv->extraInfo);
cnv->extraInfo = NULL;
*errorCode = U_ILLEGAL_ARGUMENT_ERROR;
}
}else{
*errorCode =U_MEMORY_ALLOCATION_ERROR;
}
}
static void
_ISCIIClose(UConverter *cnv){
if(cnv->extraInfo!=NULL) {
if(!cnv->isExtraLocal) {
uprv_free(cnv->extraInfo);
}
cnv->extraInfo=NULL;
}
}
static const char*
_ISCIIgetName(const UConverter* cnv){
if(cnv->extraInfo){
UConverterDataISCII* myData= (UConverterDataISCII*)cnv->extraInfo;
return myData->name;
}
return NULL;
}
static void
_ISCIIReset(UConverter *cnv, UConverterResetChoice choice){
UConverterDataISCII* data =(UConverterDataISCII *) (cnv->extraInfo);
if(choice<=UCNV_RESET_TO_UNICODE) {
cnv->toUnicodeStatus = missingCharMarker;
cnv->mode=0;
data->currentDeltaToUnicode=data->defDeltaToUnicode;
data->currentMaskToUnicode = data->defMaskToUnicode;
data->contextCharToUnicode=NO_CHAR_MARKER;
}
if(choice!=UCNV_RESET_TO_UNICODE) {
cnv->fromUChar32=0x0000;
data->contextCharFromUnicode=0x00;
data->currentMaskFromUnicode=data->defMaskToUnicode;
data->currentDeltaFromUnicode=data->defDeltaToUnicode;
data->isFirstBuffer=TRUE;
data->resetToDefaultToUnicode=FALSE;
}
}
/**
* The values in validity table are indexed by the lower bits of Unicode
* range 0x0900 - 0x09ff. The values have a structure like:
* ---------------------------------------------------------------
* | DEV | PNJ | GJR | ORI | BNG | TLG | MLM | TML |
* | | | | | ASM | KND | | |
* ---------------------------------------------------------------
* If a code point is valid in a particular script
* then that bit is turned on
*
* Unicode does not distinguish between Bengali and Assamese so we use 1 bit for
* to represent these languages
*
* Telugu and Kannada have same codepoints except for Vocallic_RR which we special case
* and combine and use 1 bit to represent these languages.
*
* TODO: It is probably easier to understand and maintain to change this
* to use uint16_t and give each of the 9 Unicode/script blocks its own bit.
*/
static const uint8_t validityTable[128] = {
/* This state table is tool generated please do not edit unless you know exactly what you are doing */
/* Note: This table was edited to mirror the Windows XP implementation */
/*ISCII:Valid:Unicode */
/*0xa0 : 0x00: 0x900 */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xa1 : 0xb8: 0x901 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + ZERO + ZERO + ZERO ,
/*0xa2 : 0xfe: 0x902 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa3 : 0xbf: 0x903 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0x00 : 0x00: 0x904 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xa4 : 0xff: 0x905 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa5 : 0xff: 0x906 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa6 : 0xff: 0x907 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa7 : 0xff: 0x908 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa8 : 0xff: 0x909 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xa9 : 0xff: 0x90a */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xaa : 0xfe: 0x90b */ DEV_MASK + ZERO + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0x00 : 0x00: 0x90c */ DEV_MASK + ZERO + ZERO + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xae : 0x80: 0x90d */ DEV_MASK + ZERO + GJR_MASK + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xab : 0x87: 0x90e */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xac : 0xff: 0x90f */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xad : 0xff: 0x910 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb2 : 0x80: 0x911 */ DEV_MASK + ZERO + GJR_MASK + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xaf : 0x87: 0x912 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb0 : 0xff: 0x913 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb1 : 0xff: 0x914 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb3 : 0xff: 0x915 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb4 : 0xfe: 0x916 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xb5 : 0xfe: 0x917 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xb6 : 0xfe: 0x918 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xb7 : 0xff: 0x919 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb8 : 0xff: 0x91a */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xb9 : 0xfe: 0x91b */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xba : 0xff: 0x91c */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xbb : 0xfe: 0x91d */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xbc : 0xff: 0x91e */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xbd : 0xff: 0x91f */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xbe : 0xfe: 0x920 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xbf : 0xfe: 0x921 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xc0 : 0xfe: 0x922 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xc1 : 0xff: 0x923 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xc2 : 0xff: 0x924 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xc3 : 0xfe: 0x925 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xc4 : 0xfe: 0x926 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xc5 : 0xfe: 0x927 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xc6 : 0xff: 0x928 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xc7 : 0x81: 0x929 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + TML_MASK ,
/*0xc8 : 0xff: 0x92a */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xc9 : 0xfe: 0x92b */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xca : 0xfe: 0x92c */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xcb : 0xfe: 0x92d */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xcc : 0xfe: 0x92e */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xcd : 0xff: 0x92f */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xcf : 0xff: 0x930 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd0 : 0x87: 0x931 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd1 : 0xff: 0x932 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd2 : 0xb7: 0x933 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd3 : 0x83: 0x934 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + MLM_MASK + TML_MASK ,
/*0xd4 : 0xff: 0x935 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd5 : 0xfe: 0x936 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0xd6 : 0xbf: 0x937 */ DEV_MASK + ZERO + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd7 : 0xff: 0x938 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xd8 : 0xff: 0x939 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0x00 : 0x00: 0x93A */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x93B */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xe9 : 0xda: 0x93c */ DEV_MASK + PNJ_MASK + ZERO + ORI_MASK + BNG_MASK + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x93d */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xda : 0xff: 0x93e */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xdb : 0xff: 0x93f */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xdc : 0xff: 0x940 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xdd : 0xff: 0x941 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xde : 0xff: 0x942 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xdf : 0xbe: 0x943 */ DEV_MASK + ZERO + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0x00 : 0x00: 0x944 */ DEV_MASK + ZERO + GJR_MASK + ZERO + BNG_MASK + KND_MASK + ZERO + ZERO ,
/*0xe3 : 0x80: 0x945 */ DEV_MASK + ZERO + GJR_MASK + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xe0 : 0x87: 0x946 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe1 : 0xff: 0x947 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe2 : 0xff: 0x948 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe7 : 0x80: 0x949 */ DEV_MASK + ZERO + GJR_MASK + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xe4 : 0x87: 0x94a */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe5 : 0xff: 0x94b */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe6 : 0xff: 0x94c */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xe8 : 0xff: 0x94d */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xec : 0x00: 0x94e */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xed : 0x00: 0x94f */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x950 */ DEV_MASK + ZERO + GJR_MASK + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x951 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x952 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x953 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x954 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x955 */ ZERO + ZERO + ZERO + ZERO + ZERO + KND_MASK + ZERO + ZERO ,
/*0x00 : 0x00: 0x956 */ ZERO + ZERO + ZERO + ORI_MASK + ZERO + KND_MASK + ZERO + ZERO ,
/*0x00 : 0x00: 0x957 */ ZERO + ZERO + ZERO + ORI_MASK + BNG_MASK + ZERO + MLM_MASK + ZERO ,
/*0x00 : 0x00: 0x958 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x959 */ DEV_MASK + PNJ_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x95a */ DEV_MASK + PNJ_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x95b */ DEV_MASK + PNJ_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x95c */ DEV_MASK + PNJ_MASK + ZERO + ZERO + BNG_MASK + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x95d */ DEV_MASK + ZERO + ZERO + ORI_MASK + BNG_MASK + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x95e */ DEV_MASK + PNJ_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xce : 0x98: 0x95f */ DEV_MASK + ZERO + ZERO + ORI_MASK + BNG_MASK + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x960 */ DEV_MASK + ZERO + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0x00 : 0x00: 0x961 */ DEV_MASK + ZERO + ZERO + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + ZERO ,
/*0x00 : 0x00: 0x962 */ DEV_MASK + ZERO + ZERO + ZERO + BNG_MASK + ZERO + ZERO + ZERO ,
/*0x00 : 0x00: 0x963 */ DEV_MASK + ZERO + ZERO + ZERO + BNG_MASK + ZERO + ZERO + ZERO ,
/*0xea : 0xf8: 0x964 */ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xeaea : 0x00: 0x965*/ DEV_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*0xf1 : 0xff: 0x966 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf2 : 0xff: 0x967 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf3 : 0xff: 0x968 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf4 : 0xff: 0x969 */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf5 : 0xff: 0x96a */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf6 : 0xff: 0x96b */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf7 : 0xff: 0x96c */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf8 : 0xff: 0x96d */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xf9 : 0xff: 0x96e */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0xfa : 0xff: 0x96f */ DEV_MASK + PNJ_MASK + GJR_MASK + ORI_MASK + BNG_MASK + KND_MASK + MLM_MASK + TML_MASK ,
/*0x00 : 0x80: 0x970 */ DEV_MASK + PNJ_MASK + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO ,
/*
* The length of the array is 128 to provide values for 0x900..0x97f.
* The last 15 entries for 0x971..0x97f of the validity table are all zero
* because no Indic script uses such Unicode code points.
*/
/*0x00 : 0x00: 0x9yz */ ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO + ZERO
};
static const uint16_t fromUnicodeTable[128]={
0x00a0 ,/* 0x0900 */
0x00a1 ,/* 0x0901 */
0x00a2 ,/* 0x0902 */
0x00a3 ,/* 0x0903 */
0xa4e0 ,/* 0x0904 */
0x00a4 ,/* 0x0905 */
0x00a5 ,/* 0x0906 */
0x00a6 ,/* 0x0907 */
0x00a7 ,/* 0x0908 */
0x00a8 ,/* 0x0909 */
0x00a9 ,/* 0x090a */
0x00aa ,/* 0x090b */
0xA6E9 ,/* 0x090c */
0x00ae ,/* 0x090d */
0x00ab ,/* 0x090e */
0x00ac ,/* 0x090f */
0x00ad ,/* 0x0910 */
0x00b2 ,/* 0x0911 */
0x00af ,/* 0x0912 */
0x00b0 ,/* 0x0913 */
0x00b1 ,/* 0x0914 */
0x00b3 ,/* 0x0915 */
0x00b4 ,/* 0x0916 */
0x00b5 ,/* 0x0917 */
0x00b6 ,/* 0x0918 */
0x00b7 ,/* 0x0919 */
0x00b8 ,/* 0x091a */
0x00b9 ,/* 0x091b */
0x00ba ,/* 0x091c */
0x00bb ,/* 0x091d */
0x00bc ,/* 0x091e */
0x00bd ,/* 0x091f */
0x00be ,/* 0x0920 */
0x00bf ,/* 0x0921 */
0x00c0 ,/* 0x0922 */
0x00c1 ,/* 0x0923 */
0x00c2 ,/* 0x0924 */
0x00c3 ,/* 0x0925 */
0x00c4 ,/* 0x0926 */
0x00c5 ,/* 0x0927 */
0x00c6 ,/* 0x0928 */
0x00c7 ,/* 0x0929 */
0x00c8 ,/* 0x092a */
0x00c9 ,/* 0x092b */
0x00ca ,/* 0x092c */
0x00cb ,/* 0x092d */
0x00cc ,/* 0x092e */
0x00cd ,/* 0x092f */
0x00cf ,/* 0x0930 */
0x00d0 ,/* 0x0931 */
0x00d1 ,/* 0x0932 */
0x00d2 ,/* 0x0933 */
0x00d3 ,/* 0x0934 */
0x00d4 ,/* 0x0935 */
0x00d5 ,/* 0x0936 */
0x00d6 ,/* 0x0937 */
0x00d7 ,/* 0x0938 */
0x00d8 ,/* 0x0939 */
0xFFFF ,/* 0x093A */
0xFFFF ,/* 0x093B */
0x00e9 ,/* 0x093c */
0xEAE9 ,/* 0x093d */
0x00da ,/* 0x093e */
0x00db ,/* 0x093f */
0x00dc ,/* 0x0940 */
0x00dd ,/* 0x0941 */
0x00de ,/* 0x0942 */
0x00df ,/* 0x0943 */
0xDFE9 ,/* 0x0944 */
0x00e3 ,/* 0x0945 */
0x00e0 ,/* 0x0946 */
0x00e1 ,/* 0x0947 */
0x00e2 ,/* 0x0948 */
0x00e7 ,/* 0x0949 */
0x00e4 ,/* 0x094a */
0x00e5 ,/* 0x094b */
0x00e6 ,/* 0x094c */
0x00e8 ,/* 0x094d */
0x00ec ,/* 0x094e */
0x00ed ,/* 0x094f */
0xA1E9 ,/* 0x0950 */ /* OM Symbol */
0xFFFF ,/* 0x0951 */
0xF0B8 ,/* 0x0952 */
0xFFFF ,/* 0x0953 */
0xFFFF ,/* 0x0954 */
0xFFFF ,/* 0x0955 */
0xFFFF ,/* 0x0956 */
0xFFFF ,/* 0x0957 */
0xb3e9 ,/* 0x0958 */
0xb4e9 ,/* 0x0959 */
0xb5e9 ,/* 0x095a */
0xbae9 ,/* 0x095b */
0xbfe9 ,/* 0x095c */
0xC0E9 ,/* 0x095d */
0xc9e9 ,/* 0x095e */
0x00ce ,/* 0x095f */
0xAAe9 ,/* 0x0960 */
0xA7E9 ,/* 0x0961 */
0xDBE9 ,/* 0x0962 */
0xDCE9 ,/* 0x0963 */
0x00ea ,/* 0x0964 */
0xeaea ,/* 0x0965 */
0x00f1 ,/* 0x0966 */
0x00f2 ,/* 0x0967 */
0x00f3 ,/* 0x0968 */
0x00f4 ,/* 0x0969 */
0x00f5 ,/* 0x096a */
0x00f6 ,/* 0x096b */
0x00f7 ,/* 0x096c */
0x00f8 ,/* 0x096d */
0x00f9 ,/* 0x096e */
0x00fa ,/* 0x096f */
0xF0BF ,/* 0x0970 */
0xFFFF ,/* 0x0971 */
0xFFFF ,/* 0x0972 */
0xFFFF ,/* 0x0973 */
0xFFFF ,/* 0x0974 */
0xFFFF ,/* 0x0975 */
0xFFFF ,/* 0x0976 */
0xFFFF ,/* 0x0977 */
0xFFFF ,/* 0x0978 */
0xFFFF ,/* 0x0979 */
0xFFFF ,/* 0x097a */
0xFFFF ,/* 0x097b */
0xFFFF ,/* 0x097c */
0xFFFF ,/* 0x097d */
0xFFFF ,/* 0x097e */
0xFFFF ,/* 0x097f */
};
static const uint16_t toUnicodeTable[256]={
0x0000,/* 0x00 */
0x0001,/* 0x01 */
0x0002,/* 0x02 */
0x0003,/* 0x03 */
0x0004,/* 0x04 */
0x0005,/* 0x05 */
0x0006,/* 0x06 */
0x0007,/* 0x07 */
0x0008,/* 0x08 */
0x0009,/* 0x09 */
0x000a,/* 0x0a */
0x000b,/* 0x0b */
0x000c,/* 0x0c */
0x000d,/* 0x0d */
0x000e,/* 0x0e */
0x000f,/* 0x0f */
0x0010,/* 0x10 */
0x0011,/* 0x11 */
0x0012,/* 0x12 */
0x0013,/* 0x13 */
0x0014,/* 0x14 */
0x0015,/* 0x15 */
0x0016,/* 0x16 */
0x0017,/* 0x17 */
0x0018,/* 0x18 */
0x0019,/* 0x19 */
0x001a,/* 0x1a */
0x001b,/* 0x1b */
0x001c,/* 0x1c */
0x001d,/* 0x1d */
0x001e,/* 0x1e */
0x001f,/* 0x1f */
0x0020,/* 0x20 */
0x0021,/* 0x21 */
0x0022,/* 0x22 */
0x0023,/* 0x23 */
0x0024,/* 0x24 */
0x0025,/* 0x25 */
0x0026,/* 0x26 */
0x0027,/* 0x27 */
0x0028,/* 0x28 */
0x0029,/* 0x29 */
0x002a,/* 0x2a */
0x002b,/* 0x2b */
0x002c,/* 0x2c */
0x002d,/* 0x2d */
0x002e,/* 0x2e */
0x002f,/* 0x2f */
0x0030,/* 0x30 */
0x0031,/* 0x31 */
0x0032,/* 0x32 */
0x0033,/* 0x33 */
0x0034,/* 0x34 */
0x0035,/* 0x35 */
0x0036,/* 0x36 */
0x0037,/* 0x37 */
0x0038,/* 0x38 */
0x0039,/* 0x39 */
0x003A,/* 0x3A */
0x003B,/* 0x3B */
0x003c,/* 0x3c */
0x003d,/* 0x3d */
0x003e,/* 0x3e */
0x003f,/* 0x3f */
0x0040,/* 0x40 */
0x0041,/* 0x41 */
0x0042,/* 0x42 */
0x0043,/* 0x43 */
0x0044,/* 0x44 */
0x0045,/* 0x45 */
0x0046,/* 0x46 */
0x0047,/* 0x47 */
0x0048,/* 0x48 */
0x0049,/* 0x49 */
0x004a,/* 0x4a */
0x004b,/* 0x4b */
0x004c,/* 0x4c */
0x004d,/* 0x4d */
0x004e,/* 0x4e */
0x004f,/* 0x4f */
0x0050,/* 0x50 */
0x0051,/* 0x51 */
0x0052,/* 0x52 */
0x0053,/* 0x53 */
0x0054,/* 0x54 */
0x0055,/* 0x55 */
0x0056,/* 0x56 */
0x0057,/* 0x57 */
0x0058,/* 0x58 */
0x0059,/* 0x59 */
0x005a,/* 0x5a */
0x005b,/* 0x5b */
0x005c,/* 0x5c */
0x005d,/* 0x5d */
0x005e,/* 0x5e */
0x005f,/* 0x5f */
0x0060,/* 0x60 */
0x0061,/* 0x61 */
0x0062,/* 0x62 */
0x0063,/* 0x63 */
0x0064,/* 0x64 */
0x0065,/* 0x65 */
0x0066,/* 0x66 */
0x0067,/* 0x67 */
0x0068,/* 0x68 */
0x0069,/* 0x69 */
0x006a,/* 0x6a */
0x006b,/* 0x6b */
0x006c,/* 0x6c */
0x006d,/* 0x6d */
0x006e,/* 0x6e */
0x006f,/* 0x6f */
0x0070,/* 0x70 */
0x0071,/* 0x71 */
0x0072,/* 0x72 */
0x0073,/* 0x73 */
0x0074,/* 0x74 */
0x0075,/* 0x75 */
0x0076,/* 0x76 */
0x0077,/* 0x77 */
0x0078,/* 0x78 */
0x0079,/* 0x79 */
0x007a,/* 0x7a */
0x007b,/* 0x7b */
0x007c,/* 0x7c */
0x007d,/* 0x7d */
0x007e,/* 0x7e */
0x007f,/* 0x7f */
0x0080,/* 0x80 */
0x0081,/* 0x81 */
0x0082,/* 0x82 */
0x0083,/* 0x83 */
0x0084,/* 0x84 */
0x0085,/* 0x85 */
0x0086,/* 0x86 */
0x0087,/* 0x87 */
0x0088,/* 0x88 */
0x0089,/* 0x89 */
0x008a,/* 0x8a */
0x008b,/* 0x8b */
0x008c,/* 0x8c */
0x008d,/* 0x8d */
0x008e,/* 0x8e */
0x008f,/* 0x8f */
0x0090,/* 0x90 */
0x0091,/* 0x91 */
0x0092,/* 0x92 */
0x0093,/* 0x93 */
0x0094,/* 0x94 */
0x0095,/* 0x95 */
0x0096,/* 0x96 */
0x0097,/* 0x97 */
0x0098,/* 0x98 */
0x0099,/* 0x99 */
0x009a,/* 0x9a */
0x009b,/* 0x9b */
0x009c,/* 0x9c */
0x009d,/* 0x9d */
0x009e,/* 0x9e */
0x009f,/* 0x9f */
0x00A0,/* 0xa0 */
0x0901,/* 0xa1 */
0x0902,/* 0xa2 */
0x0903,/* 0xa3 */
0x0905,/* 0xa4 */
0x0906,/* 0xa5 */
0x0907,/* 0xa6 */
0x0908,/* 0xa7 */
0x0909,/* 0xa8 */
0x090a,/* 0xa9 */
0x090b,/* 0xaa */
0x090e,/* 0xab */
0x090f,/* 0xac */
0x0910,/* 0xad */
0x090d,/* 0xae */
0x0912,/* 0xaf */
0x0913,/* 0xb0 */
0x0914,/* 0xb1 */
0x0911,/* 0xb2 */
0x0915,/* 0xb3 */
0x0916,/* 0xb4 */
0x0917,/* 0xb5 */
0x0918,/* 0xb6 */
0x0919,/* 0xb7 */
0x091a,/* 0xb8 */
0x091b,/* 0xb9 */
0x091c,/* 0xba */
0x091d,/* 0xbb */
0x091e,/* 0xbc */
0x091f,/* 0xbd */
0x0920,/* 0xbe */
0x0921,/* 0xbf */
0x0922,/* 0xc0 */
0x0923,/* 0xc1 */
0x0924,/* 0xc2 */
0x0925,/* 0xc3 */
0x0926,/* 0xc4 */
0x0927,/* 0xc5 */
0x0928,/* 0xc6 */
0x0929,/* 0xc7 */
0x092a,/* 0xc8 */
0x092b,/* 0xc9 */
0x092c,/* 0xca */
0x092d,/* 0xcb */
0x092e,/* 0xcc */
0x092f,/* 0xcd */
0x095f,/* 0xce */
0x0930,/* 0xcf */
0x0931,/* 0xd0 */
0x0932,/* 0xd1 */
0x0933,/* 0xd2 */
0x0934,/* 0xd3 */
0x0935,/* 0xd4 */
0x0936,/* 0xd5 */
0x0937,/* 0xd6 */
0x0938,/* 0xd7 */
0x0939,/* 0xd8 */
0x200D,/* 0xd9 */
0x093e,/* 0xda */
0x093f,/* 0xdb */
0x0940,/* 0xdc */
0x0941,/* 0xdd */
0x0942,/* 0xde */
0x0943,/* 0xdf */
0x0946,/* 0xe0 */
0x0947,/* 0xe1 */
0x0948,/* 0xe2 */
0x0945,/* 0xe3 */
0x094a,/* 0xe4 */
0x094b,/* 0xe5 */
0x094c,/* 0xe6 */
0x0949,/* 0xe7 */
0x094d,/* 0xe8 */
0x093c,/* 0xe9 */
0x0964,/* 0xea */
0xFFFF,/* 0xeb */
0xFFFF,/* 0xec */
0xFFFF,/* 0xed */
0xFFFF,/* 0xee */
0xFFFF,/* 0xef */
0xFFFF,/* 0xf0 */
0x0966,/* 0xf1 */
0x0967,/* 0xf2 */
0x0968,/* 0xf3 */
0x0969,/* 0xf4 */
0x096a,/* 0xf5 */
0x096b,/* 0xf6 */
0x096c,/* 0xf7 */
0x096d,/* 0xf8 */
0x096e,/* 0xf9 */
0x096f,/* 0xfa */
0xFFFF,/* 0xfb */
0xFFFF,/* 0xfc */
0xFFFF,/* 0xfd */
0xFFFF,/* 0xfe */
0xFFFF /* 0xff */
};
static const uint16_t vowelSignESpecialCases[][2]={
{ 2 /*length of array*/ , 0 },
{ 0xA4 , 0x0904 },
};
static const uint16_t nuktaSpecialCases[][2]={
{ 16 /*length of array*/ , 0 },
{ 0xA6 , 0x090c },
{ 0xEA , 0x093D },
{ 0xDF , 0x0944 },
{ 0xA1 , 0x0950 },
{ 0xb3 , 0x0958 },
{ 0xb4 , 0x0959 },
{ 0xb5 , 0x095a },
{ 0xba , 0x095b },
{ 0xbf , 0x095c },
{ 0xC0 , 0x095d },
{ 0xc9 , 0x095e },
{ 0xAA , 0x0960 },
{ 0xA7 , 0x0961 },
{ 0xDB , 0x0962 },
{ 0xDC , 0x0963 },
};
#define WRITE_TO_TARGET_FROM_U(args,offsets,source,target,targetLimit,targetByteUnit,err){ \
/* write the targetUniChar to target */ \
if(target <targetLimit){ \
if(targetByteUnit <= 0xFF){ \
*(target)++ = (uint8_t)(targetByteUnit); \
if(offsets){ \
*(offsets++) = (int32_t)(source - args->source-1); \
} \
}else{ \
*(target)++ = (uint8_t)(targetByteUnit>>8); \
if(offsets){ \
*(offsets++) = (int32_t)(source - args->source-1); \
} \
if(target < targetLimit){ \
*(target)++ = (uint8_t) targetByteUnit; \
if(offsets){ \
*(offsets++) = (int32_t)(source - args->source-1); \
} \
}else{ \
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = \
(uint8_t) (targetByteUnit); \
*err = U_BUFFER_OVERFLOW_ERROR; \
} \
} \
}else{ \
if(targetByteUnit & 0xFF00){ \
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = \
(uint8_t) (targetByteUnit >>8); \
} \
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = \
(uint8_t) (targetByteUnit); \
*err = U_BUFFER_OVERFLOW_ERROR; \
} \
}
/* Rules:
* Explicit Halant :
* <HALANT> + <ZWNJ>
* Soft Halant :
* <HALANT> + <ZWJ>
*/
static void
UConverter_fromUnicode_ISCII_OFFSETS_LOGIC (UConverterFromUnicodeArgs * args,
UErrorCode * err){
const UChar *source = args->source;
const UChar *sourceLimit = args->sourceLimit;
unsigned char *target = (unsigned char *) args->target;
unsigned char *targetLimit = (unsigned char *) args->targetLimit;
int32_t* offsets = args->offsets;
uint32_t targetByteUnit = 0x0000;
UChar32 sourceChar = 0x0000;
UConverterDataISCII *converterData;
uint16_t newDelta=0;
uint16_t range = 0;
UBool deltaChanged = FALSE;
if ((args->converter == NULL) || (args->targetLimit < args->target) || (args->sourceLimit < args->source)){
*err = U_ILLEGAL_ARGUMENT_ERROR;
return;
}
/* initialize data */
converterData=(UConverterDataISCII*)args->converter->extraInfo;
newDelta=converterData->currentDeltaFromUnicode;
range = (uint16_t)(newDelta/DELTA);
if((sourceChar = args->converter->fromUChar32)!=0) {
goto getTrail;
}
/*writing the char to the output stream */
while(source < sourceLimit){
targetByteUnit = missingCharMarker;
sourceChar = *source++;
/*check if input is in ASCII and C0 control codes range*/
if (sourceChar <= ASCII_END) {
WRITE_TO_TARGET_FROM_U(args,offsets,source,target,targetLimit,sourceChar,err);
if(U_FAILURE(*err)){
break;
}
if(sourceChar == LF){
targetByteUnit = ATR<<8;
targetByteUnit += (uint8_t) lookupInitialData[range].isciiLang;
args->converter->fromUnicodeStatus=sourceChar;
/* now append ATR and language code */
WRITE_TO_TARGET_FROM_U(args,offsets,source,target,targetLimit,targetByteUnit,err);
if(U_FAILURE(*err)){
break;
}
}
continue;
}
switch(sourceChar){
case ZWNJ:
/* contextChar has HALANT */
if(converterData->contextCharFromUnicode){
converterData->contextCharFromUnicode = 0x00;
targetByteUnit = ISCII_HALANT;
}else{
/* consume ZWNJ and continue */
converterData->contextCharFromUnicode = 0x00;
continue;
}
break;
case ZWJ:
/* contextChar has HALANT */
if(converterData->contextCharFromUnicode){
targetByteUnit = ISCII_NUKTA;
}else{
targetByteUnit =ISCII_INV;
}
converterData->contextCharFromUnicode = 0x00;
break;
default:
/* is the sourceChar in the INDIC_RANGE? */
if((uint16_t)(INDIC_BLOCK_END-sourceChar) <= INDIC_RANGE){
/* Danda and Double Danda are valid in Northern scripts.. since Unicode
* does not include these codepoints in all Northern scrips we need to
* filter them out
*/
if(sourceChar!= DANDA && sourceChar != DOUBLE_DANDA){
/* find out to which block the souceChar belongs*/
range =(uint16_t)((sourceChar-INDIC_BLOCK_BEGIN)/DELTA);
newDelta =(uint16_t)(range*DELTA);
/* Now are we in the same block as the previous? */
if(newDelta!= converterData->currentDeltaFromUnicode || converterData->isFirstBuffer){
converterData->currentDeltaFromUnicode = newDelta;
converterData->currentMaskFromUnicode = lookupInitialData[range].maskEnum;
deltaChanged =TRUE;
converterData->isFirstBuffer=FALSE;
}
/* Normalize all Indic codepoints to Devanagari and map them to ISCII */
/* now subtract the new delta from sourceChar*/
sourceChar -= converterData->currentDeltaFromUnicode ;
}
/* get the target byte unit */
targetByteUnit=fromUnicodeTable[(uint8_t)sourceChar];
/* is the code point valid in current script? */
if((validityTable[(uint8_t)sourceChar] & converterData->currentMaskFromUnicode)==0){
/* Vocallic RR is assigne in ISCII Telugu and Unicode */
if(converterData->currentDeltaFromUnicode!=(TELUGU_DELTA) && sourceChar!=VOCALLIC_RR){
targetByteUnit=missingCharMarker;
}
}
if(deltaChanged){
/* we are in a script block which is different than
* previous sourceChar's script block write ATR and language codes
*/
uint16_t temp=0;
temp =(uint16_t)(ATR<<8);
temp += (uint16_t)((uint8_t) lookupInitialData[range].isciiLang);
/* reset */
deltaChanged=FALSE;
/* now append ATR and language code */
WRITE_TO_TARGET_FROM_U(args,offsets,source,target,targetLimit,temp,err);
if(U_FAILURE(*err)){
break;
}
}
}
/* reset context char */
converterData->contextCharFromUnicode = 0x00;
break;
}
if(targetByteUnit != missingCharMarker){
if(targetByteUnit==ISCII_HALANT){
converterData->contextCharFromUnicode = (UChar)targetByteUnit;
}
/* write targetByteUnit to target*/
WRITE_TO_TARGET_FROM_U(args,offsets,source,target,targetLimit,targetByteUnit,err);
if(U_FAILURE(*err)){
break;
}
}
else{
/* oops.. the code point is unassigned */
/*check if the char is a First surrogate*/
if(UTF_IS_SURROGATE(sourceChar)) {
if(UTF_IS_SURROGATE_FIRST(sourceChar)) {
getTrail:
/*look ahead to find the trail surrogate*/
if(source < sourceLimit) {
/* test the following code unit */
UChar trail= (*source);
if(UTF_IS_SECOND_SURROGATE(trail)) {
source++;
sourceChar=UTF16_GET_PAIR_VALUE(sourceChar, trail);
*err =U_INVALID_CHAR_FOUND;
/* convert this surrogate code point */
/* exit this condition tree */
} else {
/* this is an unmatched lead code unit (1st surrogate) */
/* callback(illegal) */
*err=U_ILLEGAL_CHAR_FOUND;
}
} else {
/* no more input */
*err = U_ZERO_ERROR;
}
} else {
/* this is an unmatched trail code unit (2nd surrogate) */
/* callback(illegal) */
*err=U_ILLEGAL_CHAR_FOUND;
}
} else {
/* callback(unassigned) for a BMP code point */
*err = U_INVALID_CHAR_FOUND;
}
args->converter->fromUChar32=sourceChar;
break;
}
}/* end while(mySourceIndex<mySourceLength) */
/*save the state and return */
args->source = source;
args->target = (char*)target;
}
static const int32_t lookupTable[][2]={
{ ZERO, ZERO }, /*DEFALT*/
{ ZERO, ZERO }, /*ROMAN*/
{ DEVANAGARI, DEV_MASK },
{ BENGALI, BNG_MASK },
{ TAMIL, TML_MASK },
{ TELUGU, KND_MASK },
{ BENGALI, BNG_MASK },
{ ORIYA, ORI_MASK },
{ KANNADA, KND_MASK },
{ MALAYALAM, MLM_MASK },
{ GUJARATI, GJR_MASK },
{ GURMUKHI, PNJ_MASK }
};
#define WRITE_TO_TARGET_TO_U(args,source,target,offsets,offset,targetUniChar,delta, err){\
/* add offset to current Indic Block */ \
if(targetUniChar>ASCII_END && \
targetUniChar != ZWJ && \
targetUniChar != ZWNJ && \
targetUniChar != DANDA && \
targetUniChar != DOUBLE_DANDA){ \
\
targetUniChar+=(uint16_t)(delta); \
} \
/* now write the targetUniChar */ \
if(target<args->targetLimit){ \
*(target)++ = (UChar)targetUniChar; \
if(offsets){ \
*(offsets)++ = (int32_t)(offset); \
} \
}else{ \
args->converter->UCharErrorBuffer[args->converter->UCharErrorBufferLength++] = \
(UChar)targetUniChar; \
*err = U_BUFFER_OVERFLOW_ERROR; \
} \
}
#define GET_MAPPING(sourceChar,targetUniChar,data){ \
targetUniChar = toUnicodeTable[(sourceChar)] ; \
/* is the code point valid in current script? */ \
if(sourceChar> ASCII_END && \
(validityTable[(uint8_t)targetUniChar] & data->currentMaskToUnicode)==0){ \
/* Vocallic RR is assigne in ISCII Telugu and Unicode */ \
if(data->currentDeltaToUnicode!=(TELUGU_DELTA) && \
targetUniChar!=VOCALLIC_RR){ \
targetUniChar=missingCharMarker; \
} \
} \
}
/***********
* Rules for ISCII to Unicode converter
* ISCII is stateful encoding. To convert ISCII bytes to Unicode,
* which has both precomposed and decomposed forms characters
* pre-context and post-context need to be considered.
*
* Post context
* i) ATR : Attribute code is used to declare the font and script switching.
* Currently we only switch scripts and font codes consumed without generating an error
* ii) EXT : Extention code is used to declare switching to Sanskrit and for obscure,
* obsolete characters
* Pre context
* i) Halant: if preceeded by a halant then it is a explicit halant
* ii) Nukta :
* a) if preceeded by a halant then it is a soft halant
* b) if preceeded by specific consonants and the ligatures have pre-composed
* characters in Unicode then convert to pre-composed characters
* iii) Danda: If Danda is preceeded by a Danda then convert to Double Danda
*
*/
static void
UConverter_toUnicode_ISCII_OFFSETS_LOGIC(UConverterToUnicodeArgs *args,
UErrorCode* err){
const char *source = ( char *) args->source;
UChar *target = args->target;
const char *sourceLimit = args->sourceLimit;
const UChar* targetLimit = args->targetLimit;
uint32_t targetUniChar = 0x0000;
uint8_t sourceChar = 0x0000;
UConverterDataISCII* data;
UChar32* toUnicodeStatus=NULL;
UChar* contextCharToUnicode = NULL;
UBool found;
int i;
if ((args->converter == NULL) || (target < args->target) || (source < args->source)){
*err = U_ILLEGAL_ARGUMENT_ERROR;
return;
}
data = (UConverterDataISCII*)(args->converter->extraInfo);
contextCharToUnicode = &data->contextCharToUnicode; /* contains previous ISCII codepoint visited */
toUnicodeStatus = (UChar32*)&args->converter->toUnicodeStatus;/* contains the mapping to Unicode of the above codepoint*/
while(source<sourceLimit){
targetUniChar = missingCharMarker;
if(target < targetLimit){
sourceChar = (unsigned char)*(source)++;
/* look at the post-context preform special processing */
if(*contextCharToUnicode==ATR){
/* If we have ATR in *contextCharToUnicode then we need to change our
* state to the Indic Script specified by sourceChar
*/
/* check if the sourceChar is supported script range*/
if((uint8_t)(PNJ-sourceChar)<=PNJ-DEV){
data->currentDeltaToUnicode =
(uint16_t)(lookupTable[sourceChar & 0x0F][0] * DELTA);
data->currentMaskToUnicode =
(MaskEnum)lookupTable[sourceChar & 0x0F][1] ;
}
else if(sourceChar==DEF){
/* switch back to default */
data->currentDeltaToUnicode = data->defDeltaToUnicode;
data->currentMaskToUnicode = data->defMaskToUnicode;
}else{
if((sourceChar >= 0x21 && sourceChar <= 0x3F)){
/* these are display codes consume and continue */
}else{
*err =U_ILLEGAL_CHAR_FOUND;
/* reset */
*contextCharToUnicode=NO_CHAR_MARKER;
goto CALLBACK;
}
}
/* reset */
*contextCharToUnicode=NO_CHAR_MARKER;
continue;
}else if(*contextCharToUnicode==EXT){
/* check if sourceChar is in 0xA1-0xEE range */
if((uint8_t) (EXT_RANGE_END - sourceChar) <= (EXT_RANGE_END - EXT_RANGE_BEGIN)){
/* We currently support only Anudatta and Devanagari abbreviation sign */
if(sourceChar==0xBF || sourceChar == 0xB8){
targetUniChar = (sourceChar==0xBF) ? DEV_ABBR_SIGN : DEV_ANUDATTA;
/* find out if the mapping is valid in this state */
if(validityTable[(uint8_t)targetUniChar] & data->currentMaskToUnicode){
*contextCharToUnicode= NO_CHAR_MARKER;
/* write to target */
WRITE_TO_TARGET_TO_U(args,source,target,args->offsets,(source-args->source -2),
targetUniChar,data->currentDeltaToUnicode,err);
continue;
}
}
/* byte unit is unassigned */
targetUniChar = missingCharMarker;
*err= U_INVALID_CHAR_FOUND;
}else{
/* only 0xA1 - 0xEE are legal after EXT char */
*contextCharToUnicode= NO_CHAR_MARKER;
*err = U_ILLEGAL_CHAR_FOUND;
}
goto CALLBACK;
}else if(*contextCharToUnicode==ISCII_INV){
if(sourceChar==ISCII_HALANT){
targetUniChar = 0x0020; /* replace with space accoding to Indic FAQ */
}else{
targetUniChar = ZWJ;
}
/* write to target */
WRITE_TO_TARGET_TO_U(args,source,target,args->offsets,(source-args->source -2),
targetUniChar,data->currentDeltaToUnicode,err);
/* reset */
*contextCharToUnicode=NO_CHAR_MARKER;
}
/* look at the pre-context and perform special processing */
switch(sourceChar){
case ISCII_INV:
case EXT: /*falls through*/
case ATR:
*contextCharToUnicode = (UChar)sourceChar;
if(*toUnicodeStatus != missingCharMarker){
WRITE_TO_TARGET_TO_U(args,source,target,args->offsets,(source-args->source -2),
*toUnicodeStatus,data->currentDeltaToUnicode,err);
*toUnicodeStatus = missingCharMarker;
}
continue;
case ISCII_DANDA:
/* handle double danda*/
if(*contextCharToUnicode== ISCII_DANDA){
targetUniChar = DOUBLE_DANDA;
/* clear the context */
*contextCharToUnicode = NO_CHAR_MARKER;
*toUnicodeStatus = missingCharMarker;
}else{
GET_MAPPING(sourceChar,targetUniChar,data);
*contextCharToUnicode = sourceChar;
}
break;
case ISCII_HALANT:
/* handle explicit halant */
if(*contextCharToUnicode == ISCII_HALANT){
targetUniChar = ZWNJ;
/* clear the context */
*contextCharToUnicode = NO_CHAR_MARKER;
}else{
GET_MAPPING(sourceChar,targetUniChar,data);
*contextCharToUnicode = sourceChar;
}
break;
case 0x0A:
/* fall through */
case 0x0D:
data->resetToDefaultToUnicode = TRUE;
GET_MAPPING(sourceChar,targetUniChar,data);
*contextCharToUnicode = sourceChar;
break;
case ISCII_VOWEL_SIGN_E:
i=1;
found=FALSE;
for( ;i<vowelSignESpecialCases[0][0];i++){
if(vowelSignESpecialCases[i][0]==(uint8_t)*contextCharToUnicode){
targetUniChar=vowelSignESpecialCases[i][1];
found=TRUE;
break;
}
}
if(found) {
/* find out if the mapping is valid in this state */
if(validityTable[(uint8_t)targetUniChar] & data->currentMaskToUnicode){
/*targetUniChar += data->currentDeltaToUnicode ;*/
*contextCharToUnicode= NO_CHAR_MARKER;
*toUnicodeStatus = missingCharMarker;
break;
}
}
GET_MAPPING(sourceChar,targetUniChar,data);
*contextCharToUnicode = sourceChar;
break;
case ISCII_NUKTA:
/* handle soft halant */
if(*contextCharToUnicode == ISCII_HALANT){
targetUniChar = ZWJ;
/* clear the context */
*contextCharToUnicode = NO_CHAR_MARKER;
break;
}else{
/* try to handle <CHAR> + ISCII_NUKTA special mappings */
i=1;
found =FALSE;
for( ;i<nuktaSpecialCases[0][0];i++){
if(nuktaSpecialCases[i][0]==(uint8_t)*contextCharToUnicode){
targetUniChar=nuktaSpecialCases[i][1];
found =TRUE;
break;
}
}
if(found){
/* find out if the mapping is valid in this state */
if(validityTable[(uint8_t)targetUniChar] & data->currentMaskToUnicode){
/*targetUniChar += data->currentDeltaToUnicode ;*/
*contextCharToUnicode= NO_CHAR_MARKER;
*toUnicodeStatus = missingCharMarker;
break;
}
/* else fall through to default */
}
/* else fall through to default */
}
default:
GET_MAPPING(sourceChar,targetUniChar,data);
*contextCharToUnicode = sourceChar;
break;
}
if(*toUnicodeStatus != missingCharMarker){
/* write the previously mapped codepoint */
WRITE_TO_TARGET_TO_U(args,source,target,args->offsets,(source-args->source -2),
*toUnicodeStatus,data->currentDeltaToUnicode,err);
*toUnicodeStatus = missingCharMarker;
}
if(targetUniChar != missingCharMarker ){
/* now save the targetUniChar for delayed write */
*toUnicodeStatus = (UChar) targetUniChar;
if(data->resetToDefaultToUnicode==TRUE){
data->currentDeltaToUnicode = data->defDeltaToUnicode;
data->currentMaskToUnicode = data->defMaskToUnicode;
data->resetToDefaultToUnicode=FALSE;
}
}else{
/* we reach here only if targetUniChar == missingCharMarker
* so assign codes to reason and err
*/
*err = U_INVALID_CHAR_FOUND;
CALLBACK:
args->converter->toUBytes[0] = (uint8_t) sourceChar;
args->converter->toULength = 1;
break;
}
}
else{
*err =U_BUFFER_OVERFLOW_ERROR;
break;
}
}
if(U_SUCCESS(*err) && args->flush && source == sourceLimit) {
/* end of the input stream */
UConverter *cnv = args->converter;
if(*contextCharToUnicode==ATR || *contextCharToUnicode==EXT || *contextCharToUnicode==ISCII_INV){
/* set toUBytes[] */
cnv->toUBytes[0] = (uint8_t)*contextCharToUnicode;
cnv->toULength = 1;
/* avoid looping on truncated sequences */
*contextCharToUnicode = NO_CHAR_MARKER;
}else{
cnv->toULength = 0;
}
if(*toUnicodeStatus != missingCharMarker) {
/* output a remaining target character */
WRITE_TO_TARGET_TO_U(args,source,target,args->offsets,(source - args->source -1),
*toUnicodeStatus,data->currentDeltaToUnicode,err);
*toUnicodeStatus = missingCharMarker;
}
}
args->target = target;
args->source = source;
}
/* structure for SafeClone calculations */
struct cloneISCIIStruct
{
UConverter cnv;
UConverterDataISCII mydata;
};
static UConverter *
_ISCII_SafeClone(const UConverter *cnv,
void *stackBuffer,
int32_t *pBufferSize,
UErrorCode *status)
{
struct cloneISCIIStruct * localClone;
int32_t bufferSizeNeeded = sizeof(struct cloneISCIIStruct);
if (U_FAILURE(*status)){
return 0;
}
if (*pBufferSize == 0){ /* 'preflighting' request - set needed size into *pBufferSize */
*pBufferSize = bufferSizeNeeded;
return 0;
}
localClone = (struct cloneISCIIStruct *)stackBuffer;
/* ucnv.c/ucnv_safeClone() copied the main UConverter already */
uprv_memcpy(&localClone->mydata, cnv->extraInfo, sizeof(UConverterDataISCII));
localClone->cnv.extraInfo = &localClone->mydata;
localClone->cnv.isExtraLocal = TRUE;
return &localClone->cnv;
}
static void
_ISCIIGetUnicodeSet(const UConverter *cnv,
const USetAdder *sa,
UConverterUnicodeSet which,
UErrorCode *pErrorCode)
{
int32_t idx, script;
uint8_t mask;
/* Since all ISCII versions allow switching to other ISCII
scripts, we add all roundtrippable characters to this set. */
sa->addRange(sa->set, 0, ASCII_END);
for (script = DEVANAGARI; script <= MALAYALAM; script++) {
mask = (uint8_t)(lookupInitialData[script].maskEnum);
for (idx = 0; idx < DELTA; idx++) {
if (validityTable[idx] & mask) {
sa->add(sa->set, idx + (script * DELTA) + INDIC_BLOCK_BEGIN);
}
}
}
sa->add(sa->set, DANDA);
sa->add(sa->set, DOUBLE_DANDA);
sa->add(sa->set, ZWNJ);
sa->add(sa->set, ZWJ);
}
static const UConverterImpl _ISCIIImpl={
UCNV_ISCII,
NULL,
NULL,
_ISCIIOpen,
_ISCIIClose,
_ISCIIReset,
UConverter_toUnicode_ISCII_OFFSETS_LOGIC,
UConverter_toUnicode_ISCII_OFFSETS_LOGIC,
UConverter_fromUnicode_ISCII_OFFSETS_LOGIC,
UConverter_fromUnicode_ISCII_OFFSETS_LOGIC,
NULL,
NULL,
_ISCIIgetName,
NULL,
_ISCII_SafeClone,
_ISCIIGetUnicodeSet
};
static const UConverterStaticData _ISCIIStaticData={
sizeof(UConverterStaticData),
"ISCII",
0,
UCNV_IBM,
UCNV_ISCII,
1,
4,
{ 0x1a, 0, 0, 0 },
0x1,
FALSE,
FALSE,
0x0,
0x0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }, /* reserved */
};
const UConverterSharedData _ISCIIData={
sizeof(UConverterSharedData),
~((uint32_t) 0),
NULL,
NULL,
&_ISCIIStaticData,
FALSE,
&_ISCIIImpl,
0
};
#endif /* #if !UCONFIG_NO_LEGACY_CONVERSION */