Check in the pristine copy of ICU 4.6...

icu46/source/common/ubrk.cpp

+/*
+********************************************************************************
+*   Copyright (C) 1996-2008, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+********************************************************************************
+*/
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_BREAK_ITERATION
+
+#include "unicode/ubrk.h"
+
+#include "unicode/brkiter.h"
+#include "unicode/uloc.h"
+#include "unicode/ustring.h"
+#include "unicode/uchriter.h"
+#include "unicode/rbbi.h"
+#include "rbbirb.h"
+#include "uassert.h"
+
+U_NAMESPACE_USE
+
+//------------------------------------------------------------------------------
+//
+//    ubrk_open      Create a canned type of break iterator based on type (word, line, etc.)
+//                   and locale.
+//
+//------------------------------------------------------------------------------
+U_CAPI UBreakIterator* U_EXPORT2
+ubrk_open(UBreakIteratorType type,
+      const char *locale,
+      const UChar *text,
+      int32_t textLength,
+      UErrorCode *status)
+{
+
+  if(U_FAILURE(*status)) return 0;
+
+  BreakIterator *result = 0;
+
+  switch(type) {
+
+  case UBRK_CHARACTER:
+    result = BreakIterator::createCharacterInstance(Locale(locale), *status);
+    break;
+
+  case UBRK_WORD:
+    result = BreakIterator::createWordInstance(Locale(locale), *status);
+    break;
+
+  case UBRK_LINE:
+    result = BreakIterator::createLineInstance(Locale(locale), *status);
+    break;
+
+  case UBRK_SENTENCE:
+    result = BreakIterator::createSentenceInstance(Locale(locale), *status);
+    break;
+
+  case UBRK_TITLE:
+    result = BreakIterator::createTitleInstance(Locale(locale), *status);
+    break;
+
+  default:
+    *status = U_ILLEGAL_ARGUMENT_ERROR;
+  }
+
+  // check for allocation error
+  if (U_FAILURE(*status)) {
+     return 0;
+  }
+  if(result == 0) {
+    *status = U_MEMORY_ALLOCATION_ERROR;
+    return 0;
+  }
+
+
+  UBreakIterator *uBI = (UBreakIterator *)result;
+  if (text != NULL) {
+      ubrk_setText(uBI, text, textLength, status);
+  }
+  return uBI;
+}
+
+
+
+//------------------------------------------------------------------------------
+//
+//   ubrk_openRules      open a break iterator from a set of break rules.
+//                       Invokes the rule builder.
+//
+//------------------------------------------------------------------------------
+U_CAPI UBreakIterator* U_EXPORT2
+ubrk_openRules(  const UChar        *rules,
+                       int32_t       rulesLength,
+                 const UChar        *text,
+                       int32_t       textLength,
+                       UParseError  *parseErr,
+                       UErrorCode   *status)  {
+
+    if (status == NULL || U_FAILURE(*status)){
+        return 0;
+    }
+
+    BreakIterator *result = 0;
+    UnicodeString ruleString(rules, rulesLength);
+    result = RBBIRuleBuilder::createRuleBasedBreakIterator(ruleString, parseErr, *status);
+    if(U_FAILURE(*status)) {
+        return 0;
+    }
+
+    UBreakIterator *uBI = (UBreakIterator *)result;
+    if (text != NULL) {
+        ubrk_setText(uBI, text, textLength, status);
+    }
+    return uBI;
+}
+
+
+
+
+
+U_CAPI UBreakIterator * U_EXPORT2
+ubrk_safeClone(
+          const UBreakIterator *bi,
+          void *stackBuffer,
+          int32_t *pBufferSize,
+          UErrorCode *status)
+{
+    if (status == NULL || U_FAILURE(*status)){
+        return 0;
+    }
+    if (!pBufferSize || !bi){
+       *status = U_ILLEGAL_ARGUMENT_ERROR;
+        return 0;
+    }
+    // Clear any incoming Safe Clone Allocated warning.
+    //  Propagating this through to our return would really
+    //  confuse our caller.
+    if (*status==U_SAFECLONE_ALLOCATED_WARNING) {
+        *status = U_ZERO_ERROR;
+    }
+    return (UBreakIterator *)(((BreakIterator*)bi)->
+        createBufferClone(stackBuffer, *pBufferSize, *status));
+}
+
+
+
+U_CAPI void U_EXPORT2
+ubrk_close(UBreakIterator *bi)
+{
+    BreakIterator *ubi = (BreakIterator*) bi;
+    if (ubi) {
+        if (ubi->isBufferClone()) {
+            ubi->~BreakIterator();
+            *(uint32_t *)ubi = 0xdeadbeef;
+        } else {
+            delete ubi;
+        }
+    }
+}
+
+U_CAPI void U_EXPORT2
+ubrk_setText(UBreakIterator* bi,
+             const UChar*    text,
+             int32_t         textLength,
+             UErrorCode*     status)
+{
+    BreakIterator *brit = (BreakIterator *)bi;
+    UText  ut = UTEXT_INITIALIZER;
+    utext_openUChars(&ut, text, textLength, status);
+    brit->setText(&ut, *status);
+    // A stack allocated UText wrapping a UCHar * string
+    //   can be dumped without explicitly closing it.
+}
+
+
+
+U_CAPI void U_EXPORT2
+ubrk_setUText(UBreakIterator *bi,
+             UText          *text,
+             UErrorCode     *status)
+{
+    RuleBasedBreakIterator *brit = (RuleBasedBreakIterator *)bi;
+    brit->RuleBasedBreakIterator::setText(text, *status);
+}
+
+
+
+
+
+U_CAPI int32_t U_EXPORT2
+ubrk_current(const UBreakIterator *bi)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::current();
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_next(UBreakIterator *bi)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::next();
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_previous(UBreakIterator *bi)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::previous();
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_first(UBreakIterator *bi)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::first();
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_last(UBreakIterator *bi)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::last();
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_preceding(UBreakIterator *bi,
+           int32_t offset)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::preceding(offset);
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_following(UBreakIterator *bi,
+           int32_t offset)
+{
+
+  return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::following(offset);
+}
+
+U_CAPI const char* U_EXPORT2
+ubrk_getAvailable(int32_t index)
+{
+
+  return uloc_getAvailable(index);
+}
+
+U_CAPI int32_t U_EXPORT2
+ubrk_countAvailable()
+{
+
+  return uloc_countAvailable();
+}
+
+
+U_CAPI  UBool U_EXPORT2
+ubrk_isBoundary(UBreakIterator *bi, int32_t offset)
+{
+    return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::isBoundary(offset);
+}
+
+
+U_CAPI  int32_t U_EXPORT2
+ubrk_getRuleStatus(UBreakIterator *bi)
+{
+    return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatus();
+}
+
+U_CAPI  int32_t U_EXPORT2
+ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status)
+{
+    return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatusVec(fillInVec, capacity, *status);
+}
+
+
+U_CAPI const char* U_EXPORT2
+ubrk_getLocaleByType(const UBreakIterator *bi,
+                     ULocDataLocaleType type,
+                     UErrorCode* status)
+{
+    if (bi == NULL) {
+        if (U_SUCCESS(*status)) {
+            *status = U_ILLEGAL_ARGUMENT_ERROR;
+        }
+        return NULL;
+    }
+    return ((BreakIterator*)bi)->getLocaleID(type, *status);
+}
+
+
+#endif /* #if !UCONFIG_NO_BREAK_ITERATION */