// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright ( C ) 2004 - 2016 , International Business Machines
* Corporation and others . All Rights Reserved .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* file name : ucol_sit . cpp
* encoding : UTF - 8
* tab size : 8 ( not used )
* indentation : 4
*
* Modification history
* Date Name Comments
* 03 / 12 / 2004 weiv Creation
*/
#include "unicode/ustring.h"
#include "unicode/udata.h"
#include "unicode/utf16.h"
#include "utracimp.h"
#include "ucol_imp.h"
#include "ulocimp.h"
#include "cmemory.h"
#include "cstring.h"
#include "uresimp.h"
#include "unicode/coll.h"
#include "unicode/stringpiece.h"
#include "charstr.h"
U_NAMESPACE_USE
#ifdef UCOL_TRACE_SIT
# include <stdio.h>
#endif
#if !UCONFIG_NO_COLLATION
#include "unicode/tblcoll.h"
enum OptionsList {
UCOL_SIT_LANGUAGE =
0 ,
UCOL_SIT_SCRIPT =
1 ,
UCOL_SIT_REGION =
2 ,
UCOL_SIT_VARIANT =
3 ,
UCOL_SIT_KEYWORD =
4 ,
UCOL_SIT_PROVIDER =
5 ,
UCOL_SIT_LOCELEMENT_MAX = UCOL_SIT_PROVIDER,
/* the last element that's part of LocElements */
UCOL_SIT_BCP47,
UCOL_SIT_STRENGTH,
UCOL_SIT_CASE_LEVEL,
UCOL_SIT_CASE_FIRST,
UCOL_SIT_NUMERIC_COLLATION,
UCOL_SIT_ALTERNATE_HANDLING,
UCOL_SIT_NORMALIZATION_MODE,
UCOL_SIT_FRENCH_COLLATION,
UCOL_SIT_HIRAGANA_QUATERNARY,
UCOL_SIT_VARIABLE_TOP,
UCOL_SIT_VARIABLE_TOP_VALUE,
UCOL_SIT_ITEMS_COUNT
};
/* option starters chars. */
static const char alternateHArg =
'A' ;
static const char variableTopValArg =
'B' ;
static const char caseFirstArg =
'C' ;
static const char numericCollArg =
'D' ;
static const char caseLevelArg =
'E' ;
static const char frenchCollArg =
'F' ;
static const char hiraganaQArg =
'H' ;
static const char keywordArg =
'K' ;
static const char languageArg =
'L' ;
static const char normArg =
'N' ;
static const char providerArg =
'P' ;
static const char regionArg =
'R' ;
static const char strengthArg =
'S' ;
static const char variableTopArg =
'T' ;
static const char variantArg =
'V' ;
static const char RFC3066Arg =
'X' ;
static const char scriptArg =
'Z' ;
static const char collationKeyword[] =
"@collation=" ;
static const char providerKeyword[] =
"@sp=" ;
static const int32_t locElementCount = UCOL_SIT_LOCELEMENT_MAX+
1 ;
static const int32_t locElementCapacity =
32 ;
static const int32_t loc3066Capacity =
256 ;
/* structure containing specification of a collator. Initialized
* from a short string . Also used to construct a short string from a
* collator instance
*/
struct CollatorSpec {
inline CollatorSpec();
CharString locElements[locElementCount];
CharString locale;
UColAttributeValue options[UCOL_ATTRIBUTE_COUNT];
uint32_t variableTopValue;
char16_t variableTopString[locElementCapacity];
int32_t variableTopStringLen;
UBool variableTopSet;
CharString entries[UCOL_SIT_ITEMS_COUNT];
};
CollatorSpec::CollatorSpec() :
locale(),
variableTopValue(
0 ),
variableTopString(),
variableTopSet(
false )
{
// set collation options to default
for (int32_t i =
0 ; i < UCOL_ATTRIBUTE_COUNT; i++) {
options[i] = UCOL_DEFAULT;
}
}
/* structure for converting between character attribute
* representation and real collation attribute value .
*/
struct AttributeConversion {
char letter;
UColAttributeValue value;
};
static const AttributeConversion conversions[
12 ] = {
{
'1' , UCOL_PRIMARY },
{
'2' , UCOL_SECONDARY },
{
'3' , UCOL_TERTIARY },
{
'4' , UCOL_QUATERNARY },
{
'D' , UCOL_DEFAULT },
{
'I' , UCOL_IDENTICAL },
{
'L' , UCOL_LOWER_FIRST },
{
'N' , UCOL_NON_IGNORABLE },
{
'O' , UCOL_ON },
{
'S' , UCOL_SHIFTED },
{
'U' , UCOL_UPPER_FIRST },
{
'X' , UCOL_OFF }
};
static UColAttributeValue
ucol_sit_letterToAttributeValue(
char letter, UErrorCode *status) {
uint32_t i =
0 ;
for (i =
0 ; i < UPRV_LENGTHOF(conversions); i++) {
if (conversions[i].letter == letter) {
return conversions[i].value;
}
}
*status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
fprintf(stderr,
"%s:%d: unknown letter %c: %s\n" , __FILE__, __LINE__, letter, u_errorName
(*status));
#endif
return UCOL_DEFAULT;
}
/* function prototype for functions used to parse a short string */
U_CDECL_BEGIN
typedef const char * U_CALLCONV
ActionFunction(CollatorSpec *spec, uint32_t value1, const char * string,
UErrorCode *status);
U_CDECL_END
U_CDECL_BEGIN
static const char * U_CALLCONV
_processLocaleElement(CollatorSpec *spec, uint32_t value, const char * string,
UErrorCode *status)
{
do {
if (value == UCOL_SIT_LANGUAGE || value == UCOL_SIT_KEYWORD || value == UCOL_SIT_PROVIDER) {
spec->locElements[value].append(uprv_tolower(*string), *status);
} else {
spec->locElements[value].append(*string, *status);
}
} while (*(++string) != '_' && *string && U_SUCCESS(*status));
// don't skip the underscore at the end
return string;
}
U_CDECL_END
U_CDECL_BEGIN
static const char * U_CALLCONV
_processRFC3066Locale(CollatorSpec *spec, uint32_t, const char * string,
UErrorCode *status)
{
char terminator = *string;
string++;
const char *end = uprv_strchr(string+1 , terminator);
if (end == nullptr || end - string >= loc3066Capacity) {
*status = U_BUFFER_OVERFLOW_ERROR;
return string;
} else {
spec->locale.copyFrom(CharString(string, static_cast<int32_t>(end-string), *status), *status);
return end+1 ;
}
}
U_CDECL_END
U_CDECL_BEGIN
static const char * U_CALLCONV
_processCollatorOption(CollatorSpec *spec, uint32_t option, const char * string,
UErrorCode *status)
{
spec->options[option] = ucol_sit_letterToAttributeValue(*string, status);
if ((*(++string) != '_' && *string) || U_FAILURE(*status)) {
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "%s:%d: unknown collator option at '%s': %s\n" , __FILE__, __LINE__, string, u_errorName(*status));
#endif
*status = U_ILLEGAL_ARGUMENT_ERROR;
}
return string;
}
U_CDECL_END
static char16_t
readHexCodeUnit(const char **string, UErrorCode *status)
{
char16_t result = 0 ;
int32_t value = 0 ;
char c;
int32_t noDigits = 0 ;
while ((c = **string) != 0 && noDigits < 4 ) {
if ( c >= '0' && c <= '9' ) {
value = c - '0' ;
} else if ( c >= 'a' && c <= 'f' ) {
value = c - 'a' + 10 ;
} else if ( c >= 'A' && c <= 'F' ) {
value = c - 'A' + 10 ;
} else {
*status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "%s:%d: Bad hex char at '%s': %s\n" , __FILE__, __LINE__, *string, u_errorName(*status));
#endif
return 0 ;
}
result = (result << 4 ) | static_cast<char16_t>(value);
noDigits++;
(*string)++;
}
// if the string was terminated before we read 4 digits, set an error
if (noDigits < 4 ) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "%s:%d: Short (only %d digits, wanted 4) at '%s': %s\n" , __FILE__, __LINE__, noDigits,*string, u_errorName(*status));
#endif
}
return result;
}
U_CDECL_BEGIN
static const char * U_CALLCONV
_processVariableTop(CollatorSpec *spec, uint32_t value1, const char * string, UErrorCode *status)
{
// get four digits
int32_t i = 0 ;
if (!value1) {
while (U_SUCCESS(*status) && i < locElementCapacity && *string != 0 && *string != '_' ) {
spec->variableTopString[i++] = readHexCodeUnit(&string, status);
}
spec->variableTopStringLen = i;
if (i == locElementCapacity && *string != 0 && *string != '_' ) {
*status = U_BUFFER_OVERFLOW_ERROR;
}
} else {
spec->variableTopValue = readHexCodeUnit(&string, status);
}
if (U_SUCCESS(*status)) {
spec->variableTopSet = true;
}
return string;
}
U_CDECL_END
/* Table for parsing short strings */
struct ShortStringOptions {
char optionStart;
ActionFunction *action;
uint32_t attr;
};
static const ShortStringOptions options[UCOL_SIT_ITEMS_COUNT] =
{
/* 10 ALTERNATE_HANDLING */ {alternateHArg, _processCollatorOption, UCOL_ALTERNATE_HANDLING }, // alternate N, S, D
/* 15 VARIABLE_TOP_VALUE */ {variableTopValArg, _processVariableTop, 1 },
/* 08 CASE_FIRST */ {caseFirstArg, _processCollatorOption, UCOL_CASE_FIRST }, // case first L, U, X, D
/* 09 NUMERIC_COLLATION */ {numericCollArg, _processCollatorOption, UCOL_NUMERIC_COLLATION }, // codan O, X, D
/* 07 CASE_LEVEL */ {caseLevelArg, _processCollatorOption, UCOL_CASE_LEVEL }, // case level O, X, D
/* 12 FRENCH_COLLATION */ {frenchCollArg, _processCollatorOption, UCOL_FRENCH_COLLATION }, // french O, X, D
/* 13 HIRAGANA_QUATERNARY] */ {hiraganaQArg, _processCollatorOption, UCOL_HIRAGANA_QUATERNARY_MODE }, // hiragana O, X, D
/* 04 KEYWORD */ {keywordArg, _processLocaleElement, UCOL_SIT_KEYWORD }, // keyword
/* 00 LANGUAGE */ {languageArg, _processLocaleElement, UCOL_SIT_LANGUAGE }, // language
/* 11 NORMALIZATION_MODE */ {normArg, _processCollatorOption, UCOL_NORMALIZATION_MODE }, // norm O, X, D
/* 02 REGION */ {regionArg, _processLocaleElement, UCOL_SIT_REGION }, // region
/* 06 STRENGTH */ {strengthArg, _processCollatorOption, UCOL_STRENGTH }, // strength 1, 2, 3, 4, I, D
/* 14 VARIABLE_TOP */ {variableTopArg, _processVariableTop, 0 },
/* 03 VARIANT */ {variantArg, _processLocaleElement, UCOL_SIT_VARIANT }, // variant
/* 05 RFC3066BIS */ {RFC3066Arg, _processRFC3066Locale, 0 }, // rfc3066bis locale name
/* 01 SCRIPT */ {scriptArg, _processLocaleElement, UCOL_SIT_SCRIPT }, // script
/* PROVIDER */ {providerArg, _processLocaleElement, UCOL_SIT_PROVIDER }
};
static
const char * ucol_sit_readOption(const char *start, CollatorSpec *spec,
UErrorCode *status)
{
int32_t i = 0 ;
for (i = 0 ; i < UCOL_SIT_ITEMS_COUNT; i++) {
if (*start == options[i].optionStart) {
const char * end = options[i].action(spec, options[i].attr, start+1 , status);
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "***Set %d to %s...\n" , i, start);
#endif
// assume 'start' does not go away through all this
spec->entries[i].copyFrom(CharString(start, static_cast<int32_t>(end - start), *status), *status);
return end;
}
}
*status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "%s:%d: Unknown option at '%s': %s\n" , __FILE__, __LINE__, start, u_errorName(*status));
#endif
return start;
}
static const char *
ucol_sit_readSpecs(CollatorSpec *s, const char *string,
UParseError *parseError, UErrorCode *status)
{
const char *definition = string;
while (U_SUCCESS(*status) && *string) {
string = ucol_sit_readOption(string, s, status);
// advance over '_'
while (*string && *string == '_' ) {
string++;
}
}
if (U_FAILURE(*status)) {
parseError->offset = static_cast<int32_t>(string - definition);
}
return string;
}
static
int32_t ucol_sit_dumpSpecs(CollatorSpec *s, char *destination, int32_t capacity, UErrorCode *status)
{
int32_t i = 0 , j = 0 ;
int32_t len = 0 ;
char optName;
if (U_SUCCESS(*status)) {
for (i = 0 ; i < UCOL_SIT_ITEMS_COUNT; i++) {
if (!s->entries[i].isEmpty()) {
if (len) {
if (len < capacity) {
uprv_strcat(destination, "_" );
}
len++;
}
optName = s->entries[i][0 ];
if (optName == languageArg || optName == regionArg || optName == variantArg || optName == keywordArg) {
for (j = 0 ; j < s->entries[i].length(); j++) {
if (len + j < capacity) {
destination[len+j] = uprv_toupper(s->entries[i][j]);
}
}
len += s->entries[i].length();
} else {
len += s->entries[i].extract(destination + len, capacity - len, *status);
}
}
}
return len;
} else {
return 0 ;
}
}
static void
ucol_sit_calculateWholeLocale(CollatorSpec *s, UErrorCode &status) {
// put the locale together, unless we have a done
// locale
if (s->locale.isEmpty()) {
// first the language
s->locale.append(s->locElements[UCOL_SIT_LANGUAGE], status);
// then the script, if present
if (!s->locElements[UCOL_SIT_SCRIPT].isEmpty()) {
s->locale.append("_" , status);
s->locale.append(s->locElements[UCOL_SIT_SCRIPT], status);
}
// then the region, if present
if (!s->locElements[UCOL_SIT_REGION].isEmpty()) {
s->locale.append("_" , status);
s->locale.append(s->locElements[UCOL_SIT_REGION], status);
} else if (!s->locElements[UCOL_SIT_VARIANT].isEmpty()) { // if there is a variant, we need an underscore
s->locale.append("_" , status);
}
// add variant, if there
if (!s->locElements[UCOL_SIT_VARIANT].isEmpty()) {
s->locale.append("_" , status);
s->locale.append(s->locElements[UCOL_SIT_VARIANT], status);
}
// if there is a collation keyword, add that too
if (!s->locElements[UCOL_SIT_KEYWORD].isEmpty()) {
s->locale.append(collationKeyword, status);
s->locale.append(s->locElements[UCOL_SIT_KEYWORD], status);
}
// if there is a provider keyword, add that too
if (!s->locElements[UCOL_SIT_PROVIDER].isEmpty()) {
s->locale.append(providerKeyword, status);
s->locale.append(s->locElements[UCOL_SIT_PROVIDER], status);
}
}
}
U_CAPI void U_EXPORT2
ucol_prepareShortStringOpen( const char *definition,
UBool,
UParseError *parseError,
UErrorCode *status)
{
if (U_FAILURE(*status)) return ;
UParseError internalParseError;
if (!parseError) {
parseError = &internalParseError;
}
parseError->line = 0 ;
parseError->offset = 0 ;
parseError->preContext[0 ] = 0 ;
parseError->postContext[0 ] = 0 ;
// first we want to pick stuff out of short string.
// we'll end up with an UCA version, locale and a bunch of
// settings
// analyse the string in order to get everything we need.
CollatorSpec s;
ucol_sit_readSpecs(&s, definition, parseError, status);
ucol_sit_calculateWholeLocale(&s, *status);
CharString buffer = ulocimp_canonicalize(s.locale.toStringPiece(), *status);
UResourceBundle *b = ures_open(U_ICUDATA_COLL, buffer.data(), status);
/* we try to find stuff from keyword */
UResourceBundle *collations = ures_getByKey(b, "collations" , nullptr, status);
UResourceBundle *collElem = nullptr;
// if there is a keyword, we pick it up and try to get elements
CharString keyBuffer = ulocimp_getKeywordValue(buffer.data(), "collation" , *status);
if (keyBuffer.isEmpty()) {
// no keyword
// we try to find the default setting, which will give us the keyword value
UResourceBundle *defaultColl = ures_getByKeyWithFallback(collations, "default" , nullptr, status);
if (U_SUCCESS(*status)) {
int32_t defaultKeyLen = 0 ;
const char16_t *defaultKey = ures_getString(defaultColl, &defaultKeyLen, status);
keyBuffer.appendInvariantChars(defaultKey, defaultKeyLen, *status);
} else {
*status = U_INTERNAL_PROGRAM_ERROR;
return ;
}
ures_close(defaultColl);
}
collElem = ures_getByKeyWithFallback(collations, keyBuffer.data(), collElem, status);
ures_close(collElem);
ures_close(collations);
ures_close(b);
}
U_CAPI UCollator* U_EXPORT2
ucol_openFromShortString( const char *definition,
UBool forceDefaults,
UParseError *parseError,
UErrorCode *status)
{
UTRACE_ENTRY_OC(UTRACE_UCOL_OPEN_FROM_SHORT_STRING);
UTRACE_DATA1(UTRACE_INFO, "short string = \" %s\"" , definition);
if (U_FAILURE(*status)) return nullptr;
UParseError internalParseError;
if (!parseError) {
parseError = &internalParseError;
}
parseError->line = 0 ;
parseError->offset = 0 ;
parseError->preContext[0 ] = 0 ;
parseError->postContext[0 ] = 0 ;
// first we want to pick stuff out of short string.
// we'll end up with an UCA version, locale and a bunch of
// settings
// analyse the string in order to get everything we need.
const char *string = definition;
CollatorSpec s;
string = ucol_sit_readSpecs(&s, definition, parseError, status);
ucol_sit_calculateWholeLocale(&s, *status);
#ifdef UCOL_TRACE_SIT
fprintf(stderr, "DEF %s, DATA %s, ERR %s\n" , definition, s.locale.data(), u_errorName(*status));
#endif
CharString buffer = ulocimp_canonicalize(s.locale.toStringPiece(), *status);
UCollator *result = ucol_open(buffer.data(), status);
int32_t i = 0 ;
for (i = 0 ; i < UCOL_ATTRIBUTE_COUNT; i++) {
if (s.options[i] != UCOL_DEFAULT) {
if (forceDefaults || ucol_getAttribute(result, (UColAttribute)i, status) != s.options[i]) {
ucol_setAttribute(result, (UColAttribute)i, s.options[i], status);
}
if (U_FAILURE(*status)) {
parseError->offset = (int32_t)(string - definition);
ucol_close(result);
return nullptr;
}
}
}
if (s.variableTopSet) {
if (s.variableTopString[0 ]) {
ucol_setVariableTop(result, s.variableTopString, s.variableTopStringLen, status);
} else { // we set by value, using 'B'
ucol_restoreVariableTop(result, s.variableTopValue, status);
}
}
if (U_FAILURE(*status)) { // here it can only be a bogus value
ucol_close(result);
result = nullptr;
}
UTRACE_EXIT_PTR_STATUS(result, *status);
return result;
}
U_CAPI int32_t U_EXPORT2
ucol_getShortDefinitionString(const UCollator *coll,
const char *locale,
char *dst,
int32_t capacity,
UErrorCode *status)
{
if (U_FAILURE(*status)) return 0 ;
if (coll == nullptr) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0 ;
}
return ((icu::Collator*)coll)->internalGetShortDefinitionString(locale,dst,capacity,*status);
}
U_CAPI int32_t U_EXPORT2
ucol_normalizeShortDefinitionString(const char *definition,
char *destination,
int32_t capacity,
UParseError *parseError,
UErrorCode *status)
{
if (U_FAILURE(*status)) {
return 0 ;
}
if (destination) {
uprv_memset(destination, 0 , capacity*sizeof (char ));
}
UParseError pe;
if (!parseError) {
parseError = &pe;
}
// validate
CollatorSpec s;
ucol_sit_readSpecs(&s, definition, parseError, status);
return ucol_sit_dumpSpecs(&s, destination, capacity, status);
}
/**
* Get a set containing the contractions defined by the collator . The set includes
* both the UCA contractions and the contractions defined by the collator
* @ param coll collator
* @ param conts the set to hold the result
* @ param status to hold the error code
* @ return the size of the contraction set
*/
U_CAPI int32_t U_EXPORT2
ucol_getContractions( const UCollator *coll,
USet *contractions,
UErrorCode *status)
{
ucol_getContractionsAndExpansions(coll, contractions, nullptr, false , status);
return uset_getItemCount(contractions);
}
/**
* Get a set containing the expansions defined by the collator . The set includes
* both the UCA expansions and the expansions defined by the tailoring
* @ param coll collator
* @ param conts the set to hold the result
* @ param addPrefixes add the prefix contextual elements to contractions
* @ param status to hold the error code
*
* @ draft ICU 3 . 4
*/
U_CAPI void U_EXPORT2
ucol_getContractionsAndExpansions( const UCollator *coll,
USet *contractions,
USet *expansions,
UBool addPrefixes,
UErrorCode *status)
{
if (U_FAILURE(*status)) {
return ;
}
if (coll == nullptr) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return ;
}
const icu::RuleBasedCollator *rbc = icu::RuleBasedCollator::rbcFromUCollator(coll);
if (rbc == nullptr) {
*status = U_UNSUPPORTED_ERROR;
return ;
}
rbc->internalGetContractionsAndExpansions(
icu::UnicodeSet::fromUSet(contractions),
icu::UnicodeSet::fromUSet(expansions),
addPrefixes, *status);
}
#endif
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