| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 1998-1999, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * |
| * ucnv_err.c |
| * Implements error behaviour functions called by T_UConverter_{from,to}Unicode |
| * |
| * |
| * Change history: |
| * |
| * 06/29/2000 helena Major rewrite of the callback APIs. |
| */ |
| |
| #include "unicode/ucnv_err.h" |
| #include "unicode/ucnv_cb.h" |
| #include "ucnv_cnv.h" |
| #include "cmemory.h" |
| #include "unicode/ucnv.h" |
| |
| #define VALUE_STRING_LENGTH 32 |
| /*Magic # 32 = 4(number of char in value string) * 8(max number of bytes per char for any converter) */ |
| #define UNICODE_PERCENT_SIGN_CODEPOINT 0x0025 |
| #define UNICODE_U_CODEPOINT 0x0055 |
| #define UNICODE_X_CODEPOINT 0x0058 |
| #define UNICODE_RS_CODEPOINT 0x005C |
| #define UNICODE_U_LOW_CODEPOINT 0x0075 |
| #define UNICODE_X_LOW_CODEPOINT 0x0078 |
| #define UNICODE_AMP_CODEPOINT 0x0026 |
| #define UNICODE_HASH_CODEPOINT 0x0023 |
| |
| #define UCNV_PRV_ESCAPE_ICU NULL |
| #define UCNV_PRV_ESCAPE_C 'C' |
| #define UCNV_PRV_ESCAPE_XML_DEC 'D' |
| #define UCNV_PRV_ESCAPE_XML_HEX 'X' |
| #define UCNV_PRV_ESCAPE_JAVA 'J' |
| |
| |
| UBool |
| CONVERSION_U_SUCCESS (UErrorCode err) |
| { |
| if ((err == U_INVALID_CHAR_FOUND) || (err == U_ILLEGAL_CHAR_FOUND)) return FALSE; |
| else return TRUE; |
| } |
| |
| /*Takes a int32_t and fills in a UChar* string with that number "radix"-based |
| * and padded with "pad" zeroes |
| */ |
| #define MAX_DIGITS 10 |
| static int32_t itou (UChar * buffer, uint32_t i, uint32_t radix, int32_t pad) |
| { |
| int32_t length = 0; |
| int32_t num = 0; |
| int8_t digit; |
| int32_t j; |
| UChar temp; |
| |
| do{ |
| digit = (int)(i % radix); |
| buffer[length++]=(UChar)(digit<=9?(0x0030+digit):(0x0030+digit+7)); |
| }while(i=i/radix); |
| |
| while (length < pad) |
| buffer[length++] = (UChar) 0x0030;/*zero padding */ |
| |
| if(length<MAX_DIGITS){ |
| buffer[length--] = (UChar) 0x0000; |
| } |
| num= (pad>=length) ? pad :length; |
| |
| /*Reverses the string */ |
| for (j = 0; j < (num / 2); j++) |
| { |
| temp = buffer[length - j]; |
| buffer[length - j] = buffer[j]; |
| buffer[j] = temp; |
| } |
| |
| /* truncates the padding */ |
| |
| return length+1; |
| } |
| |
| /*Function Pointer STOPS at the ILLEGAL_SEQUENCE */ |
| void UCNV_FROM_U_CALLBACK_STOP ( |
| void *context, |
| UConverterFromUnicodeArgs *fromUArgs, |
| const UChar* codeUnits, |
| int32_t length, |
| UChar32 codePoint, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| /* the caller must have set the error code accordingly */ |
| return; |
| } |
| |
| |
| /*Function Pointer STOPS at the ILLEGAL_SEQUENCE */ |
| void UCNV_TO_U_CALLBACK_STOP ( |
| void *context, |
| UConverterToUnicodeArgs *toUArgs, |
| const char* codePoints, |
| int32_t length, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| /* the caller must have set the error code accordingly */ |
| return; |
| } |
| |
| void UCNV_FROM_U_CALLBACK_SKIP ( |
| void *context, |
| UConverterFromUnicodeArgs *fromUArgs, |
| const UChar* codeUnits, |
| int32_t length, |
| UChar32 codePoint, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| if(context==NULL) |
| { |
| if (reason <= UCNV_IRREGULAR) |
| { |
| *err = U_ZERO_ERROR; |
| return; |
| } |
| |
| } |
| else if(*(char*)context=='i') |
| { |
| if(reason != UCNV_UNASSIGNED) |
| { |
| /* the caller must have set |
| * the error code accordingly |
| */ |
| return; |
| } |
| else |
| { |
| *err = U_ZERO_ERROR; |
| return; |
| } |
| } |
| } |
| |
| void UCNV_FROM_U_CALLBACK_SUBSTITUTE ( |
| void *context, |
| UConverterFromUnicodeArgs *fromArgs, |
| const UChar* codeUnits, |
| int32_t length, |
| UChar32 codePoint, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| if(context == NULL) |
| { |
| if (reason > UCNV_IRREGULAR) |
| { |
| return; |
| } |
| |
| *err = U_ZERO_ERROR; |
| ucnv_cbFromUWriteSub(fromArgs, 0, err); |
| return; |
| } |
| else if(*((char*)context)=='i') |
| { |
| if(reason != UCNV_UNASSIGNED) |
| { |
| /* the caller must have set |
| * the error code accordingly |
| */ |
| return; |
| } |
| else |
| { |
| *err = U_ZERO_ERROR; |
| ucnv_cbFromUWriteSub(fromArgs, 0, err); |
| return; |
| } |
| } |
| } |
| |
| /*uses itou to get a unicode escape sequence of the offensive sequence, |
| *uses a clean copy (resetted) of the converter, to convert that unicode |
| *escape sequence to the target codepage (if conversion failure happens then |
| *we revert to substituting with subchar) |
| */ |
| void UCNV_FROM_U_CALLBACK_ESCAPE ( |
| void *context, |
| UConverterFromUnicodeArgs *fromArgs, |
| const UChar *codeUnits, |
| int32_t length, |
| UChar32 codePoint, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| |
| UChar valueString[VALUE_STRING_LENGTH]; |
| int32_t valueStringLength = 0; |
| int32_t i = 0; |
| |
| const UChar *myValueSource = NULL; |
| UErrorCode err2 = U_ZERO_ERROR; |
| UConverterFromUCallback original = NULL; |
| void *originalContext; |
| |
| UConverterFromUCallback ignoredCallback = NULL; |
| void *ignoredContext; |
| |
| if (reason > UCNV_IRREGULAR) |
| { |
| return; |
| } |
| |
| ucnv_setFromUCallBack (fromArgs->converter, |
| (UConverterFromUCallback) UCNV_FROM_U_CALLBACK_SUBSTITUTE, |
| NULL, /* To Do for HSYS: context is null? */ |
| &original, |
| &originalContext, |
| &err2); |
| |
| if (U_FAILURE (err2)) |
| { |
| *err = err2; |
| return; |
| } |
| if(context==NULL) |
| { |
| while (i < length) |
| { |
| valueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ |
| valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ |
| itou (valueString + valueStringLength, codeUnits[i++], 16, 4); |
| valueStringLength += 4; |
| } |
| } |
| else |
| { |
| switch(*((char*)context)) |
| { |
| case UCNV_PRV_ESCAPE_JAVA: |
| while (i < length) |
| { |
| valueString[valueStringLength++] = (UChar) UNICODE_RS_CODEPOINT; /* adding \ */ |
| valueString[valueStringLength++] = (UChar) UNICODE_U_LOW_CODEPOINT; /* adding u */ |
| itou (valueString + valueStringLength, codeUnits[i++], 16, 4); |
| valueStringLength += 4; |
| } |
| break; |
| |
| case UCNV_PRV_ESCAPE_C: |
| valueString[valueStringLength++] = (UChar) UNICODE_RS_CODEPOINT; /* adding \ */ |
| |
| if(length==2){ |
| UChar32 temp = UTF16_GET_PAIR_VALUE(codeUnits[0],codeUnits[1]); |
| valueString[valueStringLength++] = (UChar) UNICODE_U_LOW_CODEPOINT; /* adding u */ |
| valueStringLength += itou (valueString + valueStringLength, temp, 16, 8); |
| |
| } |
| else{ |
| valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ |
| valueStringLength += itou (valueString + valueStringLength, codeUnits[0], 16, 4); |
| } |
| break; |
| |
| case UCNV_PRV_ESCAPE_XML_DEC: |
| |
| valueString[valueStringLength++] = (UChar) UNICODE_AMP_CODEPOINT; /* adding & */ |
| valueString[valueStringLength++] = (UChar) UNICODE_HASH_CODEPOINT; /* adding # */ |
| if(length==2){ |
| UChar32 temp = UTF16_GET_PAIR_VALUE(codeUnits[0],codeUnits[1]); |
| valueStringLength += itou (valueString + valueStringLength, temp, 10, 0); |
| |
| } |
| else{ |
| valueStringLength += itou (valueString + valueStringLength, codeUnits[0], 10, 4); |
| } |
| break; |
| |
| case UCNV_PRV_ESCAPE_XML_HEX: |
| |
| valueString[valueStringLength++] = (UChar) UNICODE_AMP_CODEPOINT; /* adding & */ |
| valueString[valueStringLength++] = (UChar) UNICODE_HASH_CODEPOINT; /* adding # */ |
| valueString[valueStringLength++] = (UChar) UNICODE_X_LOW_CODEPOINT; /* adding x */ |
| if(length==2){ |
| UChar32 temp = UTF16_GET_PAIR_VALUE(codeUnits[0],codeUnits[1]); |
| valueStringLength += itou (valueString + valueStringLength, temp, 16, 0); |
| |
| } |
| else{ |
| valueStringLength += itou (valueString + valueStringLength, codeUnits[0], 16, 4); |
| } |
| break; |
| default: |
| while (i < length) |
| { |
| valueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ |
| valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ |
| itou (valueString + valueStringLength, codeUnits[i++], 16, 4); |
| valueStringLength += 4; |
| } |
| } |
| |
| } |
| myValueSource = valueString; |
| |
| /* reset the error */ |
| *err = U_ZERO_ERROR; |
| |
| ucnv_cbFromUWriteUChars(fromArgs, &myValueSource, myValueSource+valueStringLength, 0, err); |
| |
| ucnv_setFromUCallBack (fromArgs->converter, |
| original, |
| originalContext, |
| &ignoredCallback, |
| &ignoredContext, |
| &err2); |
| if (U_FAILURE (err2)) |
| { |
| *err = err2; |
| return; |
| } |
| |
| return; |
| } |
| |
| |
| |
| void UCNV_TO_U_CALLBACK_SKIP ( |
| void *context, |
| UConverterToUnicodeArgs *toArgs, |
| const char* codeUnits, |
| int32_t length, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| if(context==NULL) |
| { |
| if (reason <= UCNV_IRREGULAR) |
| { |
| *err = U_ZERO_ERROR; |
| return; |
| } |
| |
| } |
| else if(*((char*)context)=='i') |
| { |
| if(reason != UCNV_UNASSIGNED) |
| { |
| /* the caller must have set |
| * the error code accordingly |
| */ |
| return; |
| } |
| else |
| { |
| *err = U_ZERO_ERROR; |
| return; |
| } |
| } |
| } |
| |
| void UCNV_TO_U_CALLBACK_SUBSTITUTE ( |
| void *context, |
| UConverterToUnicodeArgs *toArgs, |
| const char* codeUnits, |
| int32_t length, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| if(context == NULL) |
| { |
| if (reason > UCNV_IRREGULAR) |
| { |
| return; |
| } |
| |
| *err = U_ZERO_ERROR; |
| ucnv_cbToUWriteSub(toArgs,0,err); |
| return; |
| } |
| else if(*((char*)context)=='i') |
| { |
| if(reason != UCNV_UNASSIGNED) |
| { |
| /* the caller must have set |
| * the error code accordingly |
| */ |
| return; |
| } |
| else |
| { |
| *err = U_ZERO_ERROR; |
| ucnv_cbToUWriteSub(toArgs,0,err); |
| return; |
| } |
| } |
| |
| } |
| |
| /*uses itou to get a unicode escape sequence of the offensive sequence, |
| *and uses that as the substitution sequence |
| */ |
| void UCNV_TO_U_CALLBACK_ESCAPE ( |
| void *context, |
| UConverterToUnicodeArgs *toArgs, |
| const char* codeUnits, |
| int32_t length, |
| UConverterCallbackReason reason, |
| UErrorCode * err) |
| { |
| UChar uniValueString[VALUE_STRING_LENGTH]; |
| int32_t valueStringLength = 0; |
| int32_t i = 0; |
| |
| if (reason > UCNV_IRREGULAR) |
| { |
| return; |
| } |
| |
| /* ### TODO: |
| * This should use the new ucnv_cbWrite...() functions instead of doing |
| * "tricks" as before we had a good callback API! |
| * (Actually, this function is not all that bad.) |
| */ |
| |
| while (i < length) |
| { |
| uniValueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ |
| uniValueString[valueStringLength++] = (UChar) UNICODE_X_CODEPOINT; /* adding X */ |
| itou (uniValueString + valueStringLength, (uint8_t) codeUnits[i++], 16, 2); |
| valueStringLength += 2; |
| } |
| |
| |
| /* reset the error */ |
| *err = U_ZERO_ERROR; |
| |
| ucnv_cbToUWriteUChars(toArgs, uniValueString, valueStringLength, 0, err); |
| |
| return; |
| } |
