ICU-491.11.1.tar.gz

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

diff --git a/icuSources/common/ustr_titlecase_brkiter.cpp b/icuSources/common/ustr_titlecase_brkiter.cpp
new file mode 100644 (file)
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+++ b/icuSources/common/ustr_titlecase_brkiter.cpp
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+/*
+*******************************************************************************
+*   Copyright (C) 2011, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*******************************************************************************
+*   file name:  ustr_titlecase_brkiter.cpp
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   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/ucasemap.h"
+#include "cmemory.h"
+#include "ucase.h"
+#include "ustr_imp.h"
+
+/* functions available in the common library (for unistr_case.cpp) */
+
+/*
+ * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
+ * Do this fast because it is called with every function call.
+ * Duplicate of the same function in ustrcase.cpp, to keep it inline.
+ */
+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);
+    }
+}
+
+/* public API functions */
+
+U_CAPI int32_t U_EXPORT2
+u_strToTitle(UChar *dest, int32_t destCapacity,
+             const UChar *src, int32_t srcLength,
+             UBreakIterator *titleIter,
+             const char *locale,
+             UErrorCode *pErrorCode) {
+    UCaseMap csm=UCASEMAP_INITIALIZER;
+    setTempCaseMap(&csm, locale);
+    if(titleIter!=NULL) {
+        ubrk_setText(csm.iter=titleIter, src, srcLength, pErrorCode);
+    } else {
+        csm.iter=ubrk_open(UBRK_WORD, csm.locale, src, srcLength, pErrorCode);
+    }
+    int32_t length=ustrcase_map(
+        &csm,
+        dest, destCapacity,
+        src, srcLength,
+        ustrcase_internalToTitle, pErrorCode);
+    if(titleIter==NULL && csm.iter!=NULL) {
+        ubrk_close(csm.iter);
+    }
+    return length;
+}
+
+U_CAPI int32_t U_EXPORT2
+ucasemap_toTitle(UCaseMap *csm,
+                 UChar *dest, int32_t destCapacity,
+                 const UChar *src, int32_t srcLength,
+                 UErrorCode *pErrorCode) {
+    if(csm->iter!=NULL) {
+        ubrk_setText(csm->iter, src, srcLength, pErrorCode);
+    } else {
+        csm->iter=ubrk_open(UBRK_WORD, csm->locale, src, srcLength, pErrorCode);
+    }
+    return ustrcase_map(
+        csm,
+        dest, destCapacity,
+        src, srcLength,
+        ustrcase_internalToTitle, pErrorCode);
+}
+
+#endif  // !UCONFIG_NO_BREAK_ITERATION