/* ***************************************************************************** * * Copyright (C) 1998-2001, 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" #include "ustrfmt.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 UNICODE_SEMICOLON_CODEPOINT 0x003B #define UNICODE_PLUS_CODEPOINT 0x002B #define UNICODE_LEFT_CURLY_CODEPOINT 0x007B #define UNICODE_RIGHT_CURLY_CODEPOINT 0x007D #define UCNV_PRV_ESCAPE_ICU 0 #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' #define UCNV_PRV_ESCAPE_UNICODE 'U' /*Function Pointer STOPS at the ILLEGAL_SEQUENCE */ U_CAPI void U_EXPORT2 UCNV_FROM_U_CALLBACK_STOP ( const 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 */ U_CAPI void U_EXPORT2 UCNV_TO_U_CALLBACK_STOP ( const void *context, UConverterToUnicodeArgs *toUArgs, const char* codePoints, int32_t length, UConverterCallbackReason reason, UErrorCode * err) { /* the caller must have set the error code accordingly */ return; } U_CAPI void U_EXPORT2 UCNV_FROM_U_CALLBACK_SKIP ( const 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; } } } U_CAPI void U_EXPORT2 UCNV_FROM_U_CALLBACK_SUBSTITUTE ( const 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 uprv_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) */ U_CAPI void U_EXPORT2 UCNV_FROM_U_CALLBACK_ESCAPE ( const 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; const void *originalContext; UConverterFromUCallback ignoredCallback = NULL; const void *ignoredContext; if (reason > UCNV_IRREGULAR) { return; } ucnv_setFromUCallBack (fromArgs->converter, (UConverterFromUCallback) UCNV_FROM_U_CALLBACK_SUBSTITUTE, 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 */ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 16, 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 */ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 16, 4); } break; case UCNV_PRV_ESCAPE_C: valueString[valueStringLength++] = (UChar) UNICODE_RS_CODEPOINT; /* adding \ */ if(length==2){ valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codePoint, 16, 8); } else{ valueString[valueStringLength++] = (UChar) UNICODE_U_LOW_CODEPOINT; /* adding u */ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - 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){ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codePoint, 10, 0); } else{ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[0], 10, 0); } valueString[valueStringLength++] = (UChar) UNICODE_SEMICOLON_CODEPOINT; /* adding ; */ 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){ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codePoint, 16, 0); } else{ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[0], 16, 0); } valueString[valueStringLength++] = (UChar) UNICODE_SEMICOLON_CODEPOINT; /* adding ; */ break; case UCNV_PRV_ESCAPE_UNICODE: valueString[valueStringLength++] = (UChar) UNICODE_LEFT_CURLY_CODEPOINT; /* adding { */ valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ valueString[valueStringLength++] = (UChar) UNICODE_PLUS_CODEPOINT; /* adding + */ if (length == 2) { valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codePoint, 16, 4); } else { valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[0], 16, 4); } valueString[valueStringLength++] = (UChar) UNICODE_RIGHT_CURLY_CODEPOINT; /* adding } */ break; default: while (i < length) { valueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ valueString[valueStringLength++] = (UChar) UNICODE_U_CODEPOINT; /* adding U */ valueStringLength += uprv_itou (valueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 16, 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; } U_CAPI void U_EXPORT2 UCNV_TO_U_CALLBACK_SKIP ( const 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; } } } U_CAPI void U_EXPORT2 UCNV_TO_U_CALLBACK_SUBSTITUTE ( const 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 uprv_itou to get a unicode escape sequence of the offensive sequence, *and uses that as the substitution sequence */ U_CAPI void U_EXPORT2 UCNV_TO_U_CALLBACK_ESCAPE ( const 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; } if(context==NULL) { while (i < length) { uniValueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ uniValueString[valueStringLength++] = (UChar) UNICODE_X_CODEPOINT; /* adding X */ valueStringLength += uprv_itou (uniValueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, (uint8_t) codeUnits[i++], 16, 2); } } else { switch(*((char*)context)) { case UCNV_PRV_ESCAPE_XML_DEC: while (i < length) { uniValueString[valueStringLength++] = (UChar) UNICODE_AMP_CODEPOINT; /* adding & */ uniValueString[valueStringLength++] = (UChar) UNICODE_HASH_CODEPOINT; /* adding # */ valueStringLength += uprv_itou (uniValueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 10, 0); uniValueString[valueStringLength++] = (UChar) UNICODE_SEMICOLON_CODEPOINT; /* adding ; */ } break; case UCNV_PRV_ESCAPE_XML_HEX: while (i < length) { uniValueString[valueStringLength++] = (UChar) UNICODE_AMP_CODEPOINT; /* adding & */ uniValueString[valueStringLength++] = (UChar) UNICODE_HASH_CODEPOINT; /* adding # */ uniValueString[valueStringLength++] = (UChar) UNICODE_X_LOW_CODEPOINT; /* adding x */ valueStringLength += uprv_itou (uniValueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 16, 0); uniValueString[valueStringLength++] = (UChar) UNICODE_SEMICOLON_CODEPOINT; /* adding ; */ } break; case UCNV_PRV_ESCAPE_C: while (i < length) { uniValueString[valueStringLength++] = (UChar) UNICODE_RS_CODEPOINT; /* adding \ */ uniValueString[valueStringLength++] = (UChar) UNICODE_X_LOW_CODEPOINT; /* adding x */ valueStringLength += uprv_itou (uniValueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, codeUnits[i++], 16, 2); } break; default: while (i < length) { uniValueString[valueStringLength++] = (UChar) UNICODE_PERCENT_SIGN_CODEPOINT; /* adding % */ uniValueString[valueStringLength++] = (UChar) UNICODE_X_CODEPOINT; /* adding X */ uprv_itou (uniValueString + valueStringLength, VALUE_STRING_LENGTH - valueStringLength, (uint8_t) codeUnits[i++], 16, 2); valueStringLength += 2; } } } /* reset the error */ *err = U_ZERO_ERROR; ucnv_cbToUWriteUChars(toArgs, uniValueString, valueStringLength, 0, err); }