| /* |
| ******************************************************************************* |
| * Copyright (C) 1997-2000, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ******************************************************************************* |
| * Date Name Description |
| * 06/21/00 aliu Creation. |
| ******************************************************************************* |
| */ |
| |
| #include "unicode/utrans.h" |
| #include "unicode/putil.h" |
| #include "unicode/rbt.h" |
| #include "unicode/rep.h" |
| #include "unicode/translit.h" |
| #include "unicode/unifilt.h" |
| #include "unicode/uniset.h" |
| #include "unicode/ustring.h" |
| #include "cpputils.h" |
| |
| // Following macro is to be followed by <return value>';' or just ';' |
| #define utrans_ENTRY(s) if ((s)==NULL || U_FAILURE(*(s))) return |
| |
| /******************************************************************** |
| * Replaceable-UReplaceableCallbacks glue |
| ********************************************************************/ |
| |
| /** |
| * Make a UReplaceable + UReplaceableCallbacks into a Replaceable object. |
| */ |
| class ReplaceableGlue : public Replaceable { |
| |
| UChar *buf; |
| int32_t bufLen; |
| UReplaceable *rep; |
| UReplaceableCallbacks *func; |
| |
| enum { BUF_PAD = 8 }; |
| |
| public: |
| |
| ReplaceableGlue(UReplaceable *replaceable, |
| UReplaceableCallbacks *funcCallback); |
| |
| virtual ~ReplaceableGlue(); |
| |
| virtual int32_t length() const; |
| |
| virtual UChar charAt(UTextOffset offset) const; |
| |
| virtual UChar32 char32At(UTextOffset offset) const; |
| |
| virtual void handleReplaceBetween(UTextOffset start, |
| UTextOffset limit, |
| const UnicodeString& text); |
| |
| virtual void copy(int32_t start, int32_t limit, int32_t dest); |
| }; |
| |
| |
| ReplaceableGlue::ReplaceableGlue(UReplaceable *replaceable, |
| UReplaceableCallbacks *funcCallback) { |
| this->rep = replaceable; |
| this->func = funcCallback; |
| buf = 0; |
| bufLen = 0; |
| } |
| |
| ReplaceableGlue::~ReplaceableGlue() { |
| delete[] buf; |
| } |
| |
| int32_t ReplaceableGlue::length() const { |
| return (*func->length)(rep); |
| } |
| |
| UChar ReplaceableGlue::charAt(UTextOffset offset) const { |
| return (*func->charAt)(rep, offset); |
| } |
| |
| UChar32 ReplaceableGlue::char32At(UTextOffset offset) const { |
| return (*func->char32At)(rep, offset); |
| } |
| |
| void ReplaceableGlue::handleReplaceBetween(UTextOffset start, |
| UTextOffset limit, |
| const UnicodeString& text) { |
| int32_t len = text.length(); |
| if (buf == 0 || bufLen < len) { |
| delete[] buf; |
| bufLen = len + BUF_PAD; |
| buf = new UChar[bufLen]; |
| } |
| text.extract(0, len, buf); |
| (*func->replace)(rep, start, limit, buf, len); |
| } |
| |
| void ReplaceableGlue::copy(int32_t start, int32_t limit, int32_t dest) { |
| (*func->copy)(rep, start, limit, dest); |
| } |
| |
| /******************************************************************** |
| * PRIVATE Implementation |
| ********************************************************************/ |
| |
| /** |
| * Extract a UnicodeString to a char* buffer using the invariant |
| * converter and return the actual length. |
| */ |
| static int32_t |
| _utrans_copyUnicodeStringToChars(const UnicodeString& str, |
| char* buf, |
| int32_t bufCapacity) { |
| int32_t len = str.length(); |
| if (buf != 0) { |
| // copy whatever will fit into buf |
| int32_t len2 = uprv_min(len, bufCapacity - 1); |
| str.extract(0, len2, buf, ""); |
| buf[len2] = 0; // zero-terminate |
| } |
| return len; // return actual length |
| } |
| |
| /******************************************************************** |
| * General API |
| ********************************************************************/ |
| |
| U_CAPI UTransliterator* |
| utrans_open(const char* id, |
| UTransDirection dir, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status) NULL; |
| |
| if (id == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| |
| UnicodeString ID(id, ""); // use invariant converter |
| Transliterator *trans = NULL; |
| |
| trans = Transliterator::createInstance(ID, dir, NULL); |
| |
| if (trans == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| } |
| return (UTransliterator*) trans; |
| } |
| |
| U_CAPI UTransliterator* |
| utrans_openRules(const char* id, |
| const UChar* rules, |
| int32_t rulesLength, /* -1 if null-terminated */ |
| UTransDirection dir, |
| UParseError* parseErr, /* may be NULL */ |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status) NULL; |
| |
| if (id == NULL || rules == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| |
| UnicodeString ID(id, ""); // use invariant converter |
| UnicodeString ruleStr(rulesLength < 0, |
| rules, |
| rulesLength); // r-o alias |
| |
| RuleBasedTransliterator *trans = NULL; |
| |
| // Use if() to avoid construction of ParseError object on stack |
| // unless it is called for by user. |
| if (parseErr != NULL) { |
| trans = new RuleBasedTransliterator(ID, ruleStr, dir, |
| NULL, *parseErr, *status); |
| } else { |
| trans = new RuleBasedTransliterator(ID, ruleStr, dir, |
| NULL, *status); |
| } |
| |
| if (trans == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } else if (U_FAILURE(*status)) { |
| delete trans; |
| trans = NULL; |
| } |
| return (UTransliterator*) trans; |
| } |
| |
| U_CAPI UTransliterator* |
| utrans_openInverse(const UTransliterator* trans, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status) NULL; |
| |
| UTransliterator* result = |
| (UTransliterator*) ((Transliterator*) trans)->createInverse(); |
| |
| if (result == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| } |
| |
| return result; |
| } |
| |
| U_CAPI UTransliterator* |
| utrans_clone(const UTransliterator* trans, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status) NULL; |
| |
| if (trans == NULL) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| |
| Transliterator *t = ((Transliterator*) trans)->clone(); |
| if (t == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| return (UTransliterator*) t; |
| } |
| |
| U_CAPI void |
| utrans_close(UTransliterator* trans) { |
| delete (Transliterator*) trans; |
| } |
| |
| U_CAPI int32_t |
| utrans_getID(const UTransliterator* trans, |
| char* buf, |
| int32_t bufCapacity) { |
| const UnicodeString& id = ((Transliterator*) trans)->getID(); |
| return _utrans_copyUnicodeStringToChars(id, buf, bufCapacity); |
| } |
| |
| U_CAPI void |
| utrans_register(UTransliterator* adoptedTrans, |
| UErrorCode* status) { |
| utrans_ENTRY(status); |
| Transliterator::registerInstance((Transliterator*) adoptedTrans, |
| *status); |
| } |
| |
| U_CAPI void |
| utrans_unregister(const char* id) { |
| UnicodeString ID(id, ""); // use invariant converter |
| Transliterator::unregister(ID); |
| } |
| |
| U_CAPI void |
| utrans_setFilter(UTransliterator* trans, |
| const UChar* filterPattern, |
| int32_t filterPatternLen, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status); |
| UnicodeFilter* filter = NULL; |
| if (filterPattern != NULL && *filterPattern != 0) { |
| // Create read only alias of filterPattern: |
| UnicodeString pat(filterPatternLen < 0, filterPattern, filterPatternLen); |
| filter = new UnicodeSet(pat, *status); |
| if (U_FAILURE(*status)) { |
| delete filter; |
| filter = NULL; |
| } |
| } |
| ((Transliterator*) trans)->adoptFilter(filter); |
| } |
| |
| U_CAPI int32_t |
| utrans_countAvailableIDs(void) { |
| return Transliterator::countAvailableIDs(); |
| } |
| |
| U_CAPI int32_t |
| utrans_getAvailableID(int32_t index, |
| char* buf, // may be NULL |
| int32_t bufCapacity) { |
| const UnicodeString& id = Transliterator::getAvailableID(index); |
| return _utrans_copyUnicodeStringToChars(id, buf, bufCapacity); |
| } |
| |
| /******************************************************************** |
| * Transliteration API |
| ********************************************************************/ |
| |
| U_CAPI void |
| utrans_trans(const UTransliterator* trans, |
| UReplaceable* rep, |
| UReplaceableCallbacks* repFunc, |
| int32_t start, |
| int32_t* limit, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status); |
| |
| if (trans == 0 || rep == 0 || repFunc == 0 || limit == 0) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| ReplaceableGlue r(rep, repFunc); |
| |
| *limit = ((Transliterator*) trans)->transliterate(r, start, *limit); |
| } |
| |
| U_CAPI void |
| utrans_transIncremental(const UTransliterator* trans, |
| UReplaceable* rep, |
| UReplaceableCallbacks* repFunc, |
| UTransPosition* pos, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status); |
| |
| if (trans == 0 || rep == 0 || repFunc == 0 || pos == 0) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| ReplaceableGlue r(rep, repFunc); |
| |
| ((Transliterator*) trans)->transliterate(r, *pos, *status); |
| } |
| |
| U_CAPI void |
| utrans_transUChars(const UTransliterator* trans, |
| UChar* text, |
| int32_t* textLength, |
| int32_t textCapacity, |
| int32_t start, |
| int32_t* limit, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status); |
| |
| if (trans == 0 || text == 0 || limit == 0) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| int32_t textLen = (textLength == NULL || *textLength < 0) |
| ? u_strlen(text) : *textLength; |
| // writeable alias: for this ct, len CANNOT be -1 (why?) |
| UnicodeString str(text, textLen, textCapacity); |
| |
| *limit = ((Transliterator*) trans)->transliterate(str, start, *limit); |
| |
| // Copy the string buffer back to text (only if necessary) |
| // and fill in *neededCapacity (if neededCapacity != NULL). |
| T_fillOutputParams(&str, text, textCapacity, textLength, status); |
| } |
| |
| U_CAPI void |
| utrans_transIncrementalUChars(const UTransliterator* trans, |
| UChar* text, |
| int32_t* textLength, |
| int32_t textCapacity, |
| UTransPosition* pos, |
| UErrorCode* status) { |
| |
| utrans_ENTRY(status); |
| |
| if (trans == 0 || text == 0 || pos == 0) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| int32_t textLen = (textLength == NULL || *textLength < 0) |
| ? u_strlen(text) : *textLength; |
| // writeable alias: for this ct, len CANNOT be -1 (why?) |
| UnicodeString str(text, textLen, textCapacity); |
| |
| ((Transliterator*) trans)->transliterate(str, *pos, *status); |
| |
| // Copy the string buffer back to text (only if necessary) |
| // and fill in *neededCapacity (if neededCapacity != NULL). |
| T_fillOutputParams(&str, text, textCapacity, textLength, status); |
| } |
