ICU-59117.0.1.tar.gz

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

diff --git a/icuSources/common/cstr.cpp b/icuSources/common/cstr.cpp
index c30719361eacc5c083490d145094deb5dbf5e5c4..24654f8fc228970ece88cecb9217ace57a5431f4 100644 (file)
--- a/icuSources/common/cstr.cpp
+++ b/icuSources/common/cstr.cpp
@@ -1,3 +1,5 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
 *   Copyright (C) 2015-2016, International Business Machines
@@ -6,22 +8,40 @@
 *   file name:  charstr.cpp
 */
 #include "unicode/utypes.h"
+#include "unicode/putil.h"
 #include "unicode/unistr.h"
 
-#include "charstr.h"
 #include "cstr.h"
 
+#include "charstr.h"
+#include "uinvchar.h"
+
 U_NAMESPACE_BEGIN
 
 CStr::CStr(const UnicodeString &in) {
     UErrorCode status = U_ZERO_ERROR;
-    int32_t length = in.extract(0, in.length(), NULL, (uint32_t)0);
+#if !UCONFIG_NO_CONVERSION || U_CHARSET_IS_UTF8
+    int32_t length = in.extract(0, in.length(), static_cast<char *>(NULL), static_cast<uint32_t>(0));
     int32_t resultCapacity = 0;
     char *buf = s.getAppendBuffer(length, length, resultCapacity, status);
     if (U_SUCCESS(status)) {
         in.extract(0, in.length(), buf, resultCapacity);
         s.append(buf, length, status);
     }
+#else
+    // No conversion available. Convert any invariant characters; substitute '?' for the rest.
+    // Note: can't just call u_UCharsToChars() or CharString.appendInvariantChars() on the 
+    //       whole string because they require that the entire input be invariant.
+    char buf[2];
+    for (int i=0; i<in.length(); i = in.moveIndex32(i, 1)) {
+        if (uprv_isInvariantUString(in.getBuffer()+i, 1)) {
+            u_UCharsToChars(in.getBuffer()+i, buf, 1);
+        } else {
+            buf[0] = '?';
+        }
+        s.append(buf, 1, status);
+    }
+#endif
 }
 
 CStr::~CStr() {