--- /dev/null
+/*
+*******************************************************************************
+*
+* Copyright (C) 2005-2006, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: swapimpl.cpp
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2005may05
+* created by: Markus W. Scherer
+*
+* Data file swapping functions moved here from the common library
+* because some data is hardcoded in ICU4C and needs not be swapped any more.
+* Moving the functions here simplifies testing (for code coverage) because
+* we need not jump through hoops (like adding snapshots of these files
+* to testdata).
+*
+* The declarations for these functions remain in the internal header files
+* in icu/source/common/
+*/
+
+#include "unicode/utypes.h"
+#include "unicode/putil.h"
+#include "unicode/udata.h"
+#include "cmemory.h"
+#include "cstring.h"
+#include "uinvchar.h"
+#include "uassert.h"
+#include "uarrsort.h"
+#include "ucmndata.h"
+#include "udataswp.h"
+
+/* swapping implementations in common */
+
+#include "uresdata.h"
+#include "ucnv_io.h"
+#include "uprops.h"
+#include "ucase.h"
+#include "ubidi_props.h"
+#include "ucol_swp.h"
+#include "ucnv_bld.h"
+#include "unormimp.h"
+#include "sprpimpl.h"
+#include "propname.h"
+#include "rbbidata.h"
+#include "triedict.h"
+
+/* swapping implementations in i18n */
+
+/* definitions */
+
+#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
+
+/* Unicode properties data swapping ----------------------------------------- */
+
+U_CAPI int32_t U_EXPORT2
+uprops_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode) {
+ const UDataInfo *pInfo;
+ int32_t headerSize, i;
+
+ int32_t dataIndexes[UPROPS_INDEX_COUNT];
+ const int32_t *inData32;
+
+ /* udata_swapDataHeader checks the arguments */
+ headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
+ if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+
+ /* check data format and format version */
+ pInfo=(const UDataInfo *)((const char *)inData+4);
+ if(!(
+ pInfo->dataFormat[0]==0x55 && /* dataFormat="UPro" */
+ pInfo->dataFormat[1]==0x50 &&
+ pInfo->dataFormat[2]==0x72 &&
+ pInfo->dataFormat[3]==0x6f &&
+ (pInfo->formatVersion[0]==3 || pInfo->formatVersion[0]==4) &&
+ pInfo->formatVersion[2]==UTRIE_SHIFT &&
+ pInfo->formatVersion[3]==UTRIE_INDEX_SHIFT
+ )) {
+ udata_printError(ds, "uprops_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not a Unicode properties file\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ pInfo->formatVersion[0]);
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+ return 0;
+ }
+
+ /* the properties file must contain at least the indexes array */
+ if(length>=0 && (length-headerSize)<(int32_t)sizeof(dataIndexes)) {
+ udata_printError(ds, "uprops_swap(): too few bytes (%d after header) for a Unicode properties file\n",
+ length-headerSize);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+
+ /* read the indexes */
+ inData32=(const int32_t *)((const char *)inData+headerSize);
+ for(i=0; i<UPROPS_INDEX_COUNT; ++i) {
+ dataIndexes[i]=udata_readInt32(ds, inData32[i]);
+ }
+
+ /*
+ * comments are copied from the data format description in genprops/store.c
+ * indexes[] constants are in uprops.h
+ */
+ if(length>=0) {
+ int32_t *outData32;
+
+ if((length-headerSize)<(4*dataIndexes[UPROPS_RESERVED_INDEX])) {
+ udata_printError(ds, "uprops_swap(): too few bytes (%d after header) for a Unicode properties file\n",
+ length-headerSize);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+
+ outData32=(int32_t *)((char *)outData+headerSize);
+
+ /* copy everything for inaccessible data (padding) */
+ if(inData32!=outData32) {
+ uprv_memcpy(outData32, inData32, 4*dataIndexes[UPROPS_RESERVED_INDEX]);
+ }
+
+ /* swap the indexes[16] */
+ ds->swapArray32(ds, inData32, 4*UPROPS_INDEX_COUNT, outData32, pErrorCode);
+
+ /*
+ * swap the main properties UTrie
+ * PT serialized properties trie, see utrie.h (byte size: 4*(i0-16))
+ */
+ utrie_swap(ds,
+ inData32+UPROPS_INDEX_COUNT,
+ 4*(dataIndexes[UPROPS_PROPS32_INDEX]-UPROPS_INDEX_COUNT),
+ outData32+UPROPS_INDEX_COUNT,
+ pErrorCode);
+
+ /*
+ * swap the properties and exceptions words
+ * P const uint32_t props32[i1-i0];
+ * E const uint32_t exceptions[i2-i1];
+ */
+ ds->swapArray32(ds,
+ inData32+dataIndexes[UPROPS_PROPS32_INDEX],
+ 4*(dataIndexes[UPROPS_EXCEPTIONS_TOP_INDEX]-dataIndexes[UPROPS_PROPS32_INDEX]),
+ outData32+dataIndexes[UPROPS_PROPS32_INDEX],
+ pErrorCode);
+
+ /*
+ * swap the UChars
+ * U const UChar uchars[2*(i3-i2)];
+ */
+ ds->swapArray16(ds,
+ inData32+dataIndexes[UPROPS_EXCEPTIONS_TOP_INDEX],
+ 4*(dataIndexes[UPROPS_ADDITIONAL_TRIE_INDEX]-dataIndexes[UPROPS_EXCEPTIONS_TOP_INDEX]),
+ outData32+dataIndexes[UPROPS_EXCEPTIONS_TOP_INDEX],
+ pErrorCode);
+
+ /*
+ * swap the additional UTrie
+ * i3 additionalTrieIndex; -- 32-bit unit index to the additional trie for more properties
+ */
+ utrie_swap(ds,
+ inData32+dataIndexes[UPROPS_ADDITIONAL_TRIE_INDEX],
+ 4*(dataIndexes[UPROPS_ADDITIONAL_VECTORS_INDEX]-dataIndexes[UPROPS_ADDITIONAL_TRIE_INDEX]),
+ outData32+dataIndexes[UPROPS_ADDITIONAL_TRIE_INDEX],
+ pErrorCode);
+
+ /*
+ * swap the properties vectors
+ * PV const uint32_t propsVectors[(i6-i4)/i5][i5]==uint32_t propsVectors[i6-i4];
+ */
+ ds->swapArray32(ds,
+ inData32+dataIndexes[UPROPS_ADDITIONAL_VECTORS_INDEX],
+ 4*(dataIndexes[UPROPS_RESERVED_INDEX]-dataIndexes[UPROPS_ADDITIONAL_VECTORS_INDEX]),
+ outData32+dataIndexes[UPROPS_ADDITIONAL_VECTORS_INDEX],
+ pErrorCode);
+ }
+
+ /* i6 reservedItemIndex; -- 32-bit unit index to the top of the properties vectors table */
+ return headerSize+4*dataIndexes[UPROPS_RESERVED_INDEX];
+}
+
+/* Unicode case mapping data swapping --------------------------------------- */
+
+U_CAPI int32_t U_EXPORT2
+ucase_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode) {
+ const UDataInfo *pInfo;
+ int32_t headerSize;
+
+ const uint8_t *inBytes;
+ uint8_t *outBytes;
+
+ const int32_t *inIndexes;
+ int32_t indexes[16];
+
+ int32_t i, offset, count, size;
+
+ /* udata_swapDataHeader checks the arguments */
+ headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
+ if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+
+ /* check data format and format version */
+ pInfo=(const UDataInfo *)((const char *)inData+4);
+ if(!(
+ pInfo->dataFormat[0]==UCASE_FMT_0 && /* dataFormat="cAsE" */
+ pInfo->dataFormat[1]==UCASE_FMT_1 &&
+ pInfo->dataFormat[2]==UCASE_FMT_2 &&
+ pInfo->dataFormat[3]==UCASE_FMT_3 &&
+ pInfo->formatVersion[0]==1 &&
+ pInfo->formatVersion[2]==UTRIE_SHIFT &&
+ pInfo->formatVersion[3]==UTRIE_INDEX_SHIFT
+ )) {
+ udata_printError(ds, "ucase_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as case mapping data\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ pInfo->formatVersion[0]);
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+ return 0;
+ }
+
+ inBytes=(const uint8_t *)inData+headerSize;
+ outBytes=(uint8_t *)outData+headerSize;
+
+ inIndexes=(const int32_t *)inBytes;
+
+ if(length>=0) {
+ length-=headerSize;
+ if(length<16*4) {
+ udata_printError(ds, "ucase_swap(): too few bytes (%d after header) for case mapping data\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+ }
+
+ /* read the first 16 indexes (ICU 3.2/format version 1: UCASE_IX_TOP==16, might grow) */
+ for(i=0; i<16; ++i) {
+ indexes[i]=udata_readInt32(ds, inIndexes[i]);
+ }
+
+ /* get the total length of the data */
+ size=indexes[UCASE_IX_LENGTH];
+
+ if(length>=0) {
+ if(length<size) {
+ udata_printError(ds, "ucase_swap(): too few bytes (%d after header) for all of case mapping data\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+
+ /* copy the data for inaccessible bytes */
+ if(inBytes!=outBytes) {
+ uprv_memcpy(outBytes, inBytes, size);
+ }
+
+ offset=0;
+
+ /* swap the int32_t indexes[] */
+ count=indexes[UCASE_IX_INDEX_TOP]*4;
+ ds->swapArray32(ds, inBytes, count, outBytes, pErrorCode);
+ offset+=count;
+
+ /* swap the UTrie */
+ count=indexes[UCASE_IX_TRIE_SIZE];
+ utrie_swap(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ /* swap the uint16_t exceptions[] and unfold[] */
+ count=(indexes[UCASE_IX_EXC_LENGTH]+indexes[UCASE_IX_UNFOLD_LENGTH])*2;
+ ds->swapArray16(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ U_ASSERT(offset==size);
+ }
+
+ return headerSize+size;
+}
+
+/* Unicode bidi/shaping data swapping --------------------------------------- */
+
+U_CAPI int32_t U_EXPORT2
+ubidi_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode) {
+ const UDataInfo *pInfo;
+ int32_t headerSize;
+
+ const uint8_t *inBytes;
+ uint8_t *outBytes;
+
+ const int32_t *inIndexes;
+ int32_t indexes[16];
+
+ int32_t i, offset, count, size;
+
+ /* udata_swapDataHeader checks the arguments */
+ headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
+ if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+
+ /* check data format and format version */
+ pInfo=(const UDataInfo *)((const char *)inData+4);
+ if(!(
+ pInfo->dataFormat[0]==UBIDI_FMT_0 && /* dataFormat="BiDi" */
+ pInfo->dataFormat[1]==UBIDI_FMT_1 &&
+ pInfo->dataFormat[2]==UBIDI_FMT_2 &&
+ pInfo->dataFormat[3]==UBIDI_FMT_3 &&
+ pInfo->formatVersion[0]==1 &&
+ pInfo->formatVersion[2]==UTRIE_SHIFT &&
+ pInfo->formatVersion[3]==UTRIE_INDEX_SHIFT
+ )) {
+ udata_printError(ds, "ubidi_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as bidi/shaping data\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ pInfo->formatVersion[0]);
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+ return 0;
+ }
+
+ inBytes=(const uint8_t *)inData+headerSize;
+ outBytes=(uint8_t *)outData+headerSize;
+
+ inIndexes=(const int32_t *)inBytes;
+
+ if(length>=0) {
+ length-=headerSize;
+ if(length<16*4) {
+ udata_printError(ds, "ubidi_swap(): too few bytes (%d after header) for bidi/shaping data\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+ }
+
+ /* read the first 16 indexes (ICU 3.4/format version 1: UBIDI_IX_TOP==16, might grow) */
+ for(i=0; i<16; ++i) {
+ indexes[i]=udata_readInt32(ds, inIndexes[i]);
+ }
+
+ /* get the total length of the data */
+ size=indexes[UBIDI_IX_LENGTH];
+
+ if(length>=0) {
+ if(length<size) {
+ udata_printError(ds, "ubidi_swap(): too few bytes (%d after header) for all of bidi/shaping data\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+
+ /* copy the data for inaccessible bytes */
+ if(inBytes!=outBytes) {
+ uprv_memcpy(outBytes, inBytes, size);
+ }
+
+ offset=0;
+
+ /* swap the int32_t indexes[] */
+ count=indexes[UBIDI_IX_INDEX_TOP]*4;
+ ds->swapArray32(ds, inBytes, count, outBytes, pErrorCode);
+ offset+=count;
+
+ /* swap the UTrie */
+ count=indexes[UBIDI_IX_TRIE_SIZE];
+ utrie_swap(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ /* swap the uint32_t mirrors[] */
+ count=indexes[UBIDI_IX_MIRROR_LENGTH]*4;
+ ds->swapArray32(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ /* just skip the uint8_t jgArray[] */
+ count=indexes[UBIDI_IX_JG_LIMIT]-indexes[UBIDI_IX_JG_START];
+ offset+=count;
+
+ U_ASSERT(offset==size);
+ }
+
+ return headerSize+size;
+}
+
+/* Unicode normalization data swapping -------------------------------------- */
+
+#if !UCONFIG_NO_NORMALIZATION
+
+U_CAPI int32_t U_EXPORT2
+unorm_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode) {
+ const UDataInfo *pInfo;
+ int32_t headerSize;
+
+ const uint8_t *inBytes;
+ uint8_t *outBytes;
+
+ const int32_t *inIndexes;
+ int32_t indexes[32];
+
+ int32_t i, offset, count, size;
+
+ /* udata_swapDataHeader checks the arguments */
+ headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
+ if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+
+ /* check data format and format version */
+ pInfo=(const UDataInfo *)((const char *)inData+4);
+ if(!(
+ pInfo->dataFormat[0]==0x4e && /* dataFormat="Norm" */
+ pInfo->dataFormat[1]==0x6f &&
+ pInfo->dataFormat[2]==0x72 &&
+ pInfo->dataFormat[3]==0x6d &&
+ pInfo->formatVersion[0]==2
+ )) {
+ udata_printError(ds, "unorm_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as unorm.icu\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ pInfo->formatVersion[0]);
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+ return 0;
+ }
+
+ inBytes=(const uint8_t *)inData+headerSize;
+ outBytes=(uint8_t *)outData+headerSize;
+
+ inIndexes=(const int32_t *)inBytes;
+
+ if(length>=0) {
+ length-=headerSize;
+ if(length<32*4) {
+ udata_printError(ds, "unorm_swap(): too few bytes (%d after header) for unorm.icu\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+ }
+
+ /* read the first 32 indexes (ICU 2.8/format version 2.2: _NORM_INDEX_TOP==32, might grow) */
+ for(i=0; i<32; ++i) {
+ indexes[i]=udata_readInt32(ds, inIndexes[i]);
+ }
+
+ /* calculate the total length of the data */
+ size=
+ 32*4+ /* size of indexes[] */
+ indexes[_NORM_INDEX_TRIE_SIZE]+
+ indexes[_NORM_INDEX_UCHAR_COUNT]*2+
+ indexes[_NORM_INDEX_COMBINE_DATA_COUNT]*2+
+ indexes[_NORM_INDEX_FCD_TRIE_SIZE]+
+ indexes[_NORM_INDEX_AUX_TRIE_SIZE]+
+ indexes[_NORM_INDEX_CANON_SET_COUNT]*2;
+
+ if(length>=0) {
+ if(length<size) {
+ udata_printError(ds, "unorm_swap(): too few bytes (%d after header) for all of unorm.icu\n",
+ length);
+ *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
+ return 0;
+ }
+
+ /* copy the data for inaccessible bytes */
+ if(inBytes!=outBytes) {
+ uprv_memcpy(outBytes, inBytes, size);
+ }
+
+ offset=0;
+
+ /* swap the indexes[] */
+ count=32*4;
+ ds->swapArray32(ds, inBytes, count, outBytes, pErrorCode);
+ offset+=count;
+
+ /* swap the main UTrie */
+ count=indexes[_NORM_INDEX_TRIE_SIZE];
+ utrie_swap(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ /* swap the uint16_t extraData[] and the uint16_t combiningTable[] */
+ count=(indexes[_NORM_INDEX_UCHAR_COUNT]+indexes[_NORM_INDEX_COMBINE_DATA_COUNT])*2;
+ ds->swapArray16(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+
+ /* swap the FCD UTrie */
+ count=indexes[_NORM_INDEX_FCD_TRIE_SIZE];
+ if(count!=0) {
+ utrie_swap(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+ }
+
+ /* swap the aux UTrie */
+ count=indexes[_NORM_INDEX_AUX_TRIE_SIZE];
+ if(count!=0) {
+ utrie_swap(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+ }
+
+ /* swap the uint16_t combiningTable[] */
+ count=indexes[_NORM_INDEX_CANON_SET_COUNT]*2;
+ ds->swapArray16(ds, inBytes+offset, count, outBytes+offset, pErrorCode);
+ offset+=count;
+ }
+
+ return headerSize+size;
+}
+
+#endif
+
+/* swap any data (except a .dat package) ------------------------------------ */
+
+static const struct {
+ uint8_t dataFormat[4];
+ UDataSwapFn *swapFn;
+} swapFns[]={
+ { { 0x52, 0x65, 0x73, 0x42 }, ures_swap }, /* dataFormat="ResB" */
+#if !UCONFIG_NO_LEGACY_CONVERSION
+ { { 0x63, 0x6e, 0x76, 0x74 }, ucnv_swap }, /* dataFormat="cnvt" */
+#endif
+#if !UCONFIG_NO_CONVERSION
+ { { 0x43, 0x76, 0x41, 0x6c }, ucnv_swapAliases }, /* dataFormat="CvAl" */
+#endif
+#if !UCONFIG_NO_IDNA
+ { { 0x53, 0x50, 0x52, 0x50 }, usprep_swap }, /* dataFormat="SPRP" */
+#endif
+ /* insert data formats here, descending by expected frequency of occurrence */
+ { { 0x55, 0x50, 0x72, 0x6f }, uprops_swap }, /* dataFormat="UPro" */
+
+ { { UCASE_FMT_0, UCASE_FMT_1, UCASE_FMT_2, UCASE_FMT_3 },
+ ucase_swap }, /* dataFormat="cAsE" */
+
+ { { UBIDI_FMT_0, UBIDI_FMT_1, UBIDI_FMT_2, UBIDI_FMT_3 },
+ ubidi_swap }, /* dataFormat="BiDi" */
+
+#if !UCONFIG_NO_NORMALIZATION
+ { { 0x4e, 0x6f, 0x72, 0x6d }, unorm_swap }, /* dataFormat="Norm" */
+#endif
+#if !UCONFIG_NO_COLLATION
+ { { 0x55, 0x43, 0x6f, 0x6c }, ucol_swap }, /* dataFormat="UCol" */
+ { { 0x49, 0x6e, 0x76, 0x43 }, ucol_swapInverseUCA },/* dataFormat="InvC" */
+#endif
+#if !UCONFIG_NO_BREAK_ITERATION
+ { { 0x42, 0x72, 0x6b, 0x20 }, ubrk_swap }, /* dataFormat="Brk " */
+ { { 0x54, 0x72, 0x44, 0x63 }, triedict_swap }, /* dataFormat="TrDc " */
+#endif
+ { { 0x70, 0x6e, 0x61, 0x6d }, upname_swap }, /* dataFormat="pnam" */
+ { { 0x75, 0x6e, 0x61, 0x6d }, uchar_swapNames } /* dataFormat="unam" */
+};
+
+U_CAPI int32_t U_EXPORT2
+udata_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode) {
+ char dataFormatChars[4];
+ const UDataInfo *pInfo;
+ int32_t headerSize, i, swappedLength;
+
+ if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+
+ /*
+ * Preflight the header first; checks for illegal arguments, too.
+ * Do not swap the header right away because the format-specific swapper
+ * will swap it, get the headerSize again, and also use the header
+ * information. Otherwise we would have to pass some of the information
+ * and not be able to use the UDataSwapFn signature.
+ */
+ headerSize=udata_swapDataHeader(ds, inData, -1, NULL, pErrorCode);
+
+ /*
+ * If we wanted udata_swap() to also handle non-loadable data like a UTrie,
+ * then we could check here for further known magic values and structures.
+ */
+ if(U_FAILURE(*pErrorCode)) {
+ return 0; /* the data format was not recognized */
+ }
+
+ pInfo=(const UDataInfo *)((const char *)inData+4);
+
+ {
+ /* convert the data format from ASCII to Unicode to the system charset */
+ UChar u[4]={
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3]
+ };
+
+ if(uprv_isInvariantUString(u, 4)) {
+ u_UCharsToChars(u, dataFormatChars, 4);
+ } else {
+ dataFormatChars[0]=dataFormatChars[1]=dataFormatChars[2]=dataFormatChars[3]='?';
+ }
+ }
+
+ /* dispatch to the swap function for the dataFormat */
+ for(i=0; i<LENGTHOF(swapFns); ++i) {
+ if(0==memcmp(swapFns[i].dataFormat, pInfo->dataFormat, 4)) {
+ swappedLength=swapFns[i].swapFn(ds, inData, length, outData, pErrorCode);
+
+ if(U_FAILURE(*pErrorCode)) {
+ udata_printError(ds, "udata_swap(): failure swapping data format %02x.%02x.%02x.%02x (\"%c%c%c%c\") - %s\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ dataFormatChars[0], dataFormatChars[1],
+ dataFormatChars[2], dataFormatChars[3],
+ u_errorName(*pErrorCode));
+ } else if(swappedLength<(length-15)) {
+ /* swapped less than expected */
+ udata_printError(ds, "udata_swap() warning: swapped only %d out of %d bytes - data format %02x.%02x.%02x.%02x (\"%c%c%c%c\")\n",
+ swappedLength, length,
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ dataFormatChars[0], dataFormatChars[1],
+ dataFormatChars[2], dataFormatChars[3],
+ u_errorName(*pErrorCode));
+ }
+
+ return swappedLength;
+ }
+ }
+
+ /* the dataFormat was not recognized */
+ udata_printError(ds, "udata_swap(): unknown data format %02x.%02x.%02x.%02x (\"%c%c%c%c\")\n",
+ pInfo->dataFormat[0], pInfo->dataFormat[1],
+ pInfo->dataFormat[2], pInfo->dataFormat[3],
+ dataFormatChars[0], dataFormatChars[1],
+ dataFormatChars[2], dataFormatChars[3]);
+
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+ return 0;
+}
projects / apple / icu.git / blobdiff