ICU-491.11.1.tar.gz

[apple/icu.git] / icuSources / common / unistr_titlecase_brkiter.cpp

diff --git a/icuSources/common/unistr_titlecase_brkiter.cpp b/icuSources/common/unistr_titlecase_brkiter.cpp
new file mode 100644 (file)
index 0000000..9b60e2a
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+++ b/icuSources/common/unistr_titlecase_brkiter.cpp
@@ -0,0 +1,90 @@
+/*
+*******************************************************************************
+*   Copyright (C) 2011, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*******************************************************************************
+*   file name:  unistr_titlecase_brkiter.cpp
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:2
+*
+*   created on: 2011may30
+*   created by: Markus W. Scherer
+*
+*   Titlecasing functions that are based on BreakIterator
+*   were moved here to break dependency cycles among parts of the common library.
+*/
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_BREAK_ITERATION
+
+#include "unicode/brkiter.h"
+#include "unicode/ubrk.h"
+#include "unicode/unistr.h"
+#include "unicode/ustring.h"
+#include "cmemory.h"
+#include "ustr_imp.h"
+
+static int32_t U_CALLCONV
+unistr_case_internalToTitle(const UCaseMap *csm,
+                            UChar *dest, int32_t destCapacity,
+                            const UChar *src, int32_t srcLength,
+                            UErrorCode *pErrorCode) {
+  ubrk_setText(csm->iter, src, srcLength, pErrorCode);
+  return ustrcase_internalToTitle(csm, dest, destCapacity, src, srcLength, pErrorCode);
+}
+
+/*
+ * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
+ * Do this fast because it is called with every function call.
+ */
+static inline void
+setTempCaseMap(UCaseMap *csm, const char *locale) {
+    if(csm->csp==NULL) {
+        csm->csp=ucase_getSingleton();
+    }
+    if(locale!=NULL && locale[0]==0) {
+        csm->locale[0]=0;
+    } else {
+        ustrcase_setTempCaseMapLocale(csm, locale);
+    }
+}
+
+U_NAMESPACE_BEGIN
+
+UnicodeString &
+UnicodeString::toTitle(BreakIterator *titleIter) {
+  return toTitle(titleIter, Locale::getDefault(), 0);
+}
+
+UnicodeString &
+UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale) {
+  return toTitle(titleIter, locale, 0);
+}
+
+UnicodeString &
+UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale, uint32_t options) {
+  UCaseMap csm=UCASEMAP_INITIALIZER;
+  csm.options=options;
+  setTempCaseMap(&csm, locale.getName());
+  BreakIterator *bi=titleIter;
+  if(bi==NULL) {
+    UErrorCode errorCode=U_ZERO_ERROR;
+    bi=BreakIterator::createWordInstance(locale, errorCode);
+    if(U_FAILURE(errorCode)) {
+      setToBogus();
+      return *this;
+    }
+  }
+  csm.iter=reinterpret_cast<UBreakIterator *>(bi);
+  caseMap(&csm, unistr_case_internalToTitle);
+  if(titleIter==NULL) {
+    delete bi;
+  }
+  return *this;
+}
+
+U_NAMESPACE_END
+
+#endif  // !UCONFIG_NO_BREAK_ITERATION