637 lines
22 KiB
C++
637 lines
22 KiB
C++
/*
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**********************************************************************
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* Copyright (c) 2002-2003, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* Author: Alan Liu
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* Created: October 30 2002
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* Since: ICU 2.4
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**********************************************************************
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*/
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#include "propname.h"
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#include "unicode/uchar.h"
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#include "unicode/udata.h"
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#include "umutex.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "uarrsort.h"
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U_NAMESPACE_BEGIN
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//----------------------------------------------------------------------
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// PropertyAliases implementation
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const char*
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PropertyAliases::chooseNameInGroup(Offset offset,
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UPropertyNameChoice choice) const {
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int32_t c = choice;
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if (!offset || c < 0) {
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return NULL;
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}
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const Offset* p = (const Offset*) getPointer(offset);
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while (c-- > 0) {
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if (*p++ < 0) return NULL;
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}
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Offset a = *p;
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if (a < 0) a = -a;
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return (const char*) getPointerNull(a);
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}
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const ValueMap*
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PropertyAliases::getValueMap(EnumValue prop) const {
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NonContiguousEnumToOffset* e2o = (NonContiguousEnumToOffset*) getPointer(enumToValue_offset);
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Offset a = e2o->getOffset(prop);
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return (const ValueMap*) (a ? getPointerNull(a) : NULL);
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}
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inline const char*
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PropertyAliases::getPropertyName(EnumValue prop,
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UPropertyNameChoice choice) const {
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NonContiguousEnumToOffset* e2n = (NonContiguousEnumToOffset*) getPointer(enumToName_offset);
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return chooseNameInGroup(e2n->getOffset(prop), choice);
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}
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inline EnumValue
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PropertyAliases::getPropertyEnum(const char* alias) const {
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NameToEnum* n2e = (NameToEnum*) getPointer(nameToEnum_offset);
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return n2e->getEnum(alias, *this);
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}
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inline const char*
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PropertyAliases::getPropertyValueName(EnumValue prop,
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EnumValue value,
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UPropertyNameChoice choice) const {
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const ValueMap* vm = getValueMap(prop);
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if (!vm) return NULL;
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Offset a;
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if (vm->enumToName_offset) {
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a = ((EnumToOffset*) getPointer(vm->enumToName_offset))->
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getOffset(value);
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} else {
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a = ((NonContiguousEnumToOffset*) getPointer(vm->ncEnumToName_offset))->
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getOffset(value);
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}
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return chooseNameInGroup(a, choice);
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}
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inline EnumValue
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PropertyAliases::getPropertyValueEnum(EnumValue prop,
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const char* alias) const {
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const ValueMap* vm = getValueMap(prop);
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if (!vm) return UCHAR_INVALID_CODE;
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NameToEnum* n2e = (NameToEnum*) getPointer(vm->nameToEnum_offset);
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return n2e->getEnum(alias, *this);
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}
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U_NAMESPACE_END
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//----------------------------------------------------------------------
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// UDataMemory structures
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static const PropertyAliases* PNAME = NULL;
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static UDataMemory* UDATA = NULL;
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//----------------------------------------------------------------------
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// UDataMemory loading/unloading
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/**
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* udata callback to verify the zone data.
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*/
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U_CDECL_BEGIN
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static UBool U_CALLCONV
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isPNameAcceptable(void* /*context*/,
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const char* /*type*/, const char* /*name*/,
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const UDataInfo* info) {
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return
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info->size >= sizeof(UDataInfo) &&
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info->isBigEndian == U_IS_BIG_ENDIAN &&
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info->charsetFamily == U_CHARSET_FAMILY &&
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info->dataFormat[0] == PNAME_SIG_0 &&
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info->dataFormat[1] == PNAME_SIG_1 &&
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info->dataFormat[2] == PNAME_SIG_2 &&
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info->dataFormat[3] == PNAME_SIG_3 &&
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info->formatVersion[0] == PNAME_FORMAT_VERSION;
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}
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UBool
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pname_cleanup() {
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if (UDATA) {
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udata_close(UDATA);
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UDATA = NULL;
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}
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PNAME = NULL;
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return TRUE;
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}
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U_CDECL_END
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/**
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* Load the property names data. Caller should check that data is
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* not loaded BEFORE calling this function. Returns TRUE if the load
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* succeeds.
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*/
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static UBool _load() {
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UErrorCode ec = U_ZERO_ERROR;
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UDataMemory* data =
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udata_openChoice(0, PNAME_DATA_TYPE, PNAME_DATA_NAME,
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isPNameAcceptable, 0, &ec);
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if (U_SUCCESS(ec)) {
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umtx_lock(NULL);
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if (UDATA == NULL) {
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UDATA = data;
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PNAME = (const PropertyAliases*) udata_getMemory(UDATA);
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data = NULL;
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}
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umtx_unlock(NULL);
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}
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if (data) {
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udata_close(data);
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}
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return PNAME!=NULL;
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}
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/**
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* Inline function that expands to code that does a lazy load of the
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* property names data. If the data is already loaded, avoids an
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* unnecessary function call. If the data is not loaded, call _load()
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* to load it, and return TRUE if the load succeeds.
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*/
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static inline UBool load() {
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umtx_lock(NULL);
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UBool f = (PNAME!=NULL);
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umtx_unlock(NULL);
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return f || _load();
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}
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//----------------------------------------------------------------------
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// Public API implementation
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// The C API is just a thin wrapper. Each function obtains a pointer
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// to the singleton PropertyAliases, and calls the appropriate method
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// on it. If it cannot obtain a pointer, because valid data is not
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// available, then it returns NULL or UCHAR_INVALID_CODE.
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U_CAPI const char* U_EXPORT2
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u_getPropertyName(UProperty property,
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UPropertyNameChoice nameChoice) {
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return load() ? PNAME->getPropertyName(property, nameChoice)
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: NULL;
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}
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U_CAPI UProperty U_EXPORT2
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u_getPropertyEnum(const char* alias) {
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UProperty p = load() ? (UProperty) PNAME->getPropertyEnum(alias)
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: UCHAR_INVALID_CODE;
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return p;
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}
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U_CAPI const char* U_EXPORT2
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u_getPropertyValueName(UProperty property,
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int32_t value,
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UPropertyNameChoice nameChoice) {
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return load() ? PNAME->getPropertyValueName(property, value, nameChoice)
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: NULL;
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}
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U_CAPI int32_t U_EXPORT2
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u_getPropertyValueEnum(UProperty property,
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const char* alias) {
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return load() ? PNAME->getPropertyValueEnum(property, alias)
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: (int32_t)UCHAR_INVALID_CODE;
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}
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/* data swapping ------------------------------------------------------------ */
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/*
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* Sub-structure-swappers use the temp array (which is as large as the
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* actual data) for intermediate storage,
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* as well as to indicate if a particular structure has been swapped already.
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* The temp array is initially reset to all 0.
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* pos is the byte offset of the sub-structure in the inBytes/outBytes/temp arrays.
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*/
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int32_t
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EnumToOffset::swap(const UDataSwapper *ds,
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const uint8_t *inBytes, int32_t length, uint8_t *outBytes,
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uint8_t *temp, int32_t pos,
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UErrorCode *pErrorCode) {
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const EnumToOffset *inMap;
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EnumToOffset *outMap, *tempMap;
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int32_t size;
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tempMap=(EnumToOffset *)(temp+pos);
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if(tempMap->enumStart!=0 || tempMap->enumLimit!=0) {
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/* this map was swapped already */
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size=tempMap->getSize();
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return size;
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}
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inMap=(const EnumToOffset *)(inBytes+pos);
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outMap=(EnumToOffset *)(outBytes+pos);
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tempMap->enumStart=udata_readInt32(ds, inMap->enumStart);
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tempMap->enumLimit=udata_readInt32(ds, inMap->enumLimit);
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size=tempMap->getSize();
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if(length>=0) {
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if(length<(pos+size)) {
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if(length<(int32_t)sizeof(PropertyAliases)) {
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udata_printError(ds, "upname_swap(EnumToOffset): too few bytes (%d after header)\n"
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" for pnames.icu EnumToOffset{%d..%d} at %d\n",
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length, tempMap->enumStart, tempMap->enumLimit, pos);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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/* swap enumStart and enumLimit */
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ds->swapArray32(ds, inMap, 2*sizeof(EnumValue), outMap, pErrorCode);
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/* swap _offsetArray[] */
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ds->swapArray16(ds, inMap->getOffsetArray(), (tempMap->enumLimit-tempMap->enumStart)*sizeof(Offset),
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outMap->getOffsetArray(), pErrorCode);
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}
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return size;
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}
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int32_t
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NonContiguousEnumToOffset::swap(const UDataSwapper *ds,
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const uint8_t *inBytes, int32_t length, uint8_t *outBytes,
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uint8_t *temp, int32_t pos,
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UErrorCode *pErrorCode) {
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const NonContiguousEnumToOffset *inMap;
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NonContiguousEnumToOffset *outMap, *tempMap;
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int32_t size;
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tempMap=(NonContiguousEnumToOffset *)(temp+pos);
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if(tempMap->count!=0) {
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/* this map was swapped already */
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size=tempMap->getSize();
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return size;
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}
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inMap=(const NonContiguousEnumToOffset *)(inBytes+pos);
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outMap=(NonContiguousEnumToOffset *)(outBytes+pos);
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tempMap->count=udata_readInt32(ds, inMap->count);
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size=tempMap->getSize();
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if(length>=0) {
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if(length<(pos+size)) {
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if(length<(int32_t)sizeof(PropertyAliases)) {
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udata_printError(ds, "upname_swap(NonContiguousEnumToOffset): too few bytes (%d after header)\n"
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" for pnames.icu NonContiguousEnumToOffset[%d] at %d\n",
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length, tempMap->count, pos);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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/* swap count and _enumArray[] */
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length=(1+tempMap->count)*sizeof(EnumValue);
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ds->swapArray32(ds, inMap, length,
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outMap, pErrorCode);
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/* swap _offsetArray[] */
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pos+=length;
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ds->swapArray16(ds, inBytes+pos, tempMap->count*sizeof(Offset),
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outBytes+pos, pErrorCode);
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}
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return size;
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}
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struct NameAndIndex {
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Offset name, index;
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};
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U_CDECL_BEGIN
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typedef int32_t U_CALLCONV PropNameCompareFn(const char *name1, const char *name2);
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struct CompareContext {
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const char *chars;
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PropNameCompareFn *propCompare;
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};
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static int32_t U_CALLCONV
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upname_compareRows(const void *context, const void *left, const void *right) {
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CompareContext *cmp=(CompareContext *)context;
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return cmp->propCompare(cmp->chars+((const NameAndIndex *)left)->name,
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cmp->chars+((const NameAndIndex *)right)->name);
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}
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U_CDECL_END
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int32_t
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NameToEnum::swap(const UDataSwapper *ds,
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const uint8_t *inBytes, int32_t length, uint8_t *outBytes,
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uint8_t *temp, int32_t pos,
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UErrorCode *pErrorCode) {
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const NameToEnum *inMap;
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NameToEnum *outMap, *tempMap;
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const EnumValue *inEnumArray;
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EnumValue *outEnumArray;
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const Offset *inNameArray;
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Offset *outNameArray;
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NameAndIndex *sortArray;
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CompareContext cmp;
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int32_t i, size, oldIndex;
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tempMap=(NameToEnum *)(temp+pos);
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if(tempMap->count!=0) {
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/* this map was swapped already */
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size=tempMap->getSize();
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return size;
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}
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inMap=(const NameToEnum *)(inBytes+pos);
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outMap=(NameToEnum *)(outBytes+pos);
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tempMap->count=udata_readInt32(ds, inMap->count);
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size=tempMap->getSize();
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if(length>=0) {
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if(length<(pos+size)) {
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if(length<(int32_t)sizeof(PropertyAliases)) {
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udata_printError(ds, "upname_swap(NameToEnum): too few bytes (%d after header)\n"
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" for pnames.icu NameToEnum[%d] at %d\n",
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length, tempMap->count, pos);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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/* swap count */
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ds->swapArray32(ds, inMap, 4, outMap, pErrorCode);
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inEnumArray=inMap->getEnumArray();
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outEnumArray=outMap->getEnumArray();
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inNameArray=(const Offset *)(inEnumArray+tempMap->count);
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outNameArray=(Offset *)(outEnumArray+tempMap->count);
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if(ds->inCharset==ds->outCharset) {
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/* no need to sort, just swap the enum/name arrays */
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ds->swapArray32(ds, inEnumArray, tempMap->count*4, outEnumArray, pErrorCode);
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ds->swapArray16(ds, inNameArray, tempMap->count*2, outNameArray, pErrorCode);
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return size;
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}
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/*
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* The name and enum arrays are sorted by names and must be resorted
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* if inCharset!=outCharset.
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* We use the corresponding part of the temp array to sort an array
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* of pairs of name offsets and sorting indexes.
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* Then the sorting indexes are used to permutate-swap the name and enum arrays.
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*
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* The outBytes must already contain the swapped strings.
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*/
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sortArray=(NameAndIndex *)tempMap->getEnumArray();
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for(i=0; i<tempMap->count; ++i) {
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sortArray[i].name=udata_readInt16(ds, inNameArray[i]);
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sortArray[i].index=(Offset)i;
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}
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/*
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* use a stable sort to avoid shuffling of equal strings,
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* which makes testing harder
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*/
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cmp.chars=(const char *)outBytes;
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cmp.propCompare=
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ds->outCharset==U_ASCII_FAMILY ?
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uprv_compareASCIIPropertyNames :
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uprv_compareEBCDICPropertyNames;
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uprv_sortArray(sortArray, tempMap->count, sizeof(NameAndIndex),
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upname_compareRows, &cmp,
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TRUE, pErrorCode);
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if(U_FAILURE(*pErrorCode)) {
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udata_printError(ds, "upname_swap(NameToEnum).uprv_sortArray(%d items) failed - %s\n",
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tempMap->count, u_errorName(*pErrorCode));
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return 0;
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}
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/* copy/swap/permutate _enumArray[] and _nameArray[] */
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if(inEnumArray!=outEnumArray) {
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for(i=0; i<tempMap->count; ++i) {
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oldIndex=sortArray[i].index;
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ds->swapArray32(ds, inEnumArray+oldIndex, 4, outEnumArray+i, pErrorCode);
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ds->swapArray16(ds, inNameArray+oldIndex, 2, outNameArray+i, pErrorCode);
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}
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} else {
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/*
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* in-place swapping: need to permutate into a temporary array
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* and then copy back to not destroy the data
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*/
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EnumValue *tempEnumArray;
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Offset *oldIndexes;
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/* write name offsets directly from sortArray */
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for(i=0; i<tempMap->count; ++i) {
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ds->writeUInt16((uint16_t *)outNameArray+i, (uint16_t)sortArray[i].name);
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}
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/*
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* compress the oldIndexes into a separate array to make space for tempEnumArray
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* the tempMap _nameArray becomes oldIndexes[], getting the index
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* values from the 2D sortArray[],
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* while sortArray=tempMap _enumArray[] becomes tempEnumArray[]
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* this saves us allocating more memory
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*
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* it works because sizeof(NameAndIndex)<=sizeof(EnumValue)
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* and because the nameArray[] can be used for oldIndexes[]
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*/
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tempEnumArray=(EnumValue *)sortArray;
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oldIndexes=(Offset *)(sortArray+tempMap->count);
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/* copy sortArray[].index values into oldIndexes[] */
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for(i=0; i<tempMap->count; ++i) {
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oldIndexes[i]=sortArray[i].index;
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}
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/* permutate inEnumArray[] into tempEnumArray[] */
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for(i=0; i<tempMap->count; ++i) {
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ds->swapArray32(ds, inEnumArray+oldIndexes[i], 4, tempEnumArray+i, pErrorCode);
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}
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/* copy tempEnumArray[] to outEnumArray[] */
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uprv_memcpy(outEnumArray, tempEnumArray, tempMap->count*4);
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}
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}
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return size;
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}
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int32_t
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PropertyAliases::swap(const UDataSwapper *ds,
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const uint8_t *inBytes, int32_t length, uint8_t *outBytes,
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UErrorCode *pErrorCode) {
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const PropertyAliases *inAliases;
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PropertyAliases *outAliases;
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PropertyAliases aliases;
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const ValueMap *inValueMaps;
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ValueMap *outValueMaps;
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ValueMap valueMap;
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uint8_t *temp;
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int32_t i;
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inAliases=(const PropertyAliases *)inBytes;
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outAliases=(PropertyAliases *)outBytes;
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/* read the input PropertyAliases - all 16-bit values */
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for(i=0; i<(int32_t)sizeof(PropertyAliases)/2; ++i) {
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((uint16_t *)&aliases)[i]=ds->readUInt16(((const uint16_t *)inBytes)[i]);
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}
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if(length>=0) {
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if(length<aliases.total_size) {
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udata_printError(ds, "upname_swap(): too few bytes (%d after header) for all of pnames.icu\n",
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length);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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/* copy the data for inaccessible bytes */
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if(inBytes!=outBytes) {
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uprv_memcpy(outBytes, inBytes, aliases.total_size);
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}
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/* swap the PropertyAliases class fields */
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ds->swapArray16(ds, inAliases, sizeof(PropertyAliases), outAliases, pErrorCode);
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/* swap the name groups */
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ds->swapArray16(ds, inBytes+aliases.nameGroupPool_offset,
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aliases.stringPool_offset-aliases.nameGroupPool_offset,
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|
outBytes+aliases.nameGroupPool_offset, pErrorCode);
|
|
|
|
/* swap the strings */
|
|
udata_swapInvStringBlock(ds, inBytes+aliases.stringPool_offset,
|
|
aliases.total_size-aliases.stringPool_offset,
|
|
outBytes+aliases.stringPool_offset, pErrorCode);
|
|
|
|
/*
|
|
* alloc uint8_t temp[total_size] and reset it
|
|
* swap each top-level struct, put at least the count fields into temp
|
|
* use subclass-specific swap() functions
|
|
* enumerate value maps, for each
|
|
* if temp does not have count!=0 yet
|
|
* read count, put it into temp
|
|
* swap the array(s)
|
|
* resort strings in name->enum maps
|
|
* swap value maps
|
|
*/
|
|
temp=(uint8_t *)uprv_malloc(aliases.total_size);
|
|
if(temp==NULL) {
|
|
udata_printError(ds, "upname_swap(): unable to allocate temp memory (%d bytes)\n",
|
|
aliases.total_size);
|
|
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return 0;
|
|
}
|
|
uprv_memset(temp, 0, aliases.total_size);
|
|
|
|
/* swap properties->name groups map */
|
|
NonContiguousEnumToOffset::swap(ds, inBytes, length, outBytes,
|
|
temp, aliases.enumToName_offset, pErrorCode);
|
|
|
|
/* swap name->properties map */
|
|
NameToEnum::swap(ds, inBytes, length, outBytes,
|
|
temp, aliases.nameToEnum_offset, pErrorCode);
|
|
|
|
/* swap properties->value maps map */
|
|
NonContiguousEnumToOffset::swap(ds, inBytes, length, outBytes,
|
|
temp, aliases.enumToValue_offset, pErrorCode);
|
|
|
|
/* enumerate all ValueMaps and swap them */
|
|
inValueMaps=(const ValueMap *)(inBytes+aliases.valueMap_offset);
|
|
outValueMaps=(ValueMap *)(outBytes+aliases.valueMap_offset);
|
|
|
|
for(i=0; i<aliases.valueMap_count; ++i) {
|
|
valueMap.enumToName_offset=udata_readInt16(ds, inValueMaps[i].enumToName_offset);
|
|
valueMap.ncEnumToName_offset=udata_readInt16(ds, inValueMaps[i].ncEnumToName_offset);
|
|
valueMap.nameToEnum_offset=udata_readInt16(ds, inValueMaps[i].nameToEnum_offset);
|
|
|
|
if(valueMap.enumToName_offset!=0) {
|
|
EnumToOffset::swap(ds, inBytes, length, outBytes,
|
|
temp, valueMap.enumToName_offset,
|
|
pErrorCode);
|
|
} else if(valueMap.ncEnumToName_offset!=0) {
|
|
NonContiguousEnumToOffset::swap(ds, inBytes, length, outBytes,
|
|
temp, valueMap.ncEnumToName_offset,
|
|
pErrorCode);
|
|
}
|
|
if(valueMap.nameToEnum_offset!=0) {
|
|
NameToEnum::swap(ds, inBytes, length, outBytes,
|
|
temp, valueMap.nameToEnum_offset,
|
|
pErrorCode);
|
|
}
|
|
}
|
|
|
|
/* swap the ValueMaps array itself */
|
|
ds->swapArray16(ds, inValueMaps, aliases.valueMap_count*sizeof(ValueMap),
|
|
outValueMaps, pErrorCode);
|
|
|
|
/* name groups and strings were swapped above */
|
|
|
|
/* release temp */
|
|
uprv_free(temp);
|
|
}
|
|
|
|
return aliases.total_size;
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
upname_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;
|
|
|
|
/* 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]==0x70 && /* dataFormat="pnam" */
|
|
pInfo->dataFormat[1]==0x6e &&
|
|
pInfo->dataFormat[2]==0x61 &&
|
|
pInfo->dataFormat[3]==0x6d &&
|
|
pInfo->formatVersion[0]==1
|
|
)) {
|
|
udata_printError(ds, "upname_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as pnames.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;
|
|
|
|
if(length>=0) {
|
|
length-=headerSize;
|
|
if(length<(int32_t)sizeof(PropertyAliases)) {
|
|
udata_printError(ds, "upname_swap(): too few bytes (%d after header) for pnames.icu\n",
|
|
length);
|
|
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return headerSize+PropertyAliases::swap(ds, inBytes, length, outBytes, pErrorCode);
|
|
}
|
|
|
|
//eof
|