1 files changed, 121 insertions, 0 deletions
diff --git a/intl/uconv/util/nsUnicodeEncodeHelper.cpp b/intl/uconv/util/nsUnicodeEncodeHelper.cpp
new file mode 100644
index 000000000..f801e8166
--- /dev/null
+++ b/intl/uconv/util/nsUnicodeEncodeHelper.cpp
@@ -0,0 +1,121 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "unicpriv.h"
+#include "nsUnicodeEncodeHelper.h"
+#include "nsDebug.h"
+
+//----------------------------------------------------------------------
+// Class nsUnicodeEncodeHelper [implementation]
+nsresult nsUnicodeEncodeHelper::ConvertByTable(
+                                     const char16_t * aSrc, 
+                                     int32_t * aSrcLength, 
+                                     char * aDest, 
+                                     int32_t * aDestLength, 
+                                     uScanClassID aScanClass,
+                                     uShiftOutTable * aShiftOutTable,
+                                     uMappingTable  * aMappingTable)
+{
+  const char16_t * src = aSrc;
+  const char16_t * srcEnd = aSrc + *aSrcLength;
+  char * dest = aDest;
+  int32_t destLen = *aDestLength;
+
+  char16_t med;
+  int32_t bcw; // byte count for write;
+  nsresult res = NS_OK;
+
+  while (src < srcEnd) {
+    if (!uMapCode((uTable*) aMappingTable, static_cast<char16_t>(*(src++)), reinterpret_cast<uint16_t*>(&med))) {
+      if (aScanClass == u1ByteCharset && *(src - 1) < 0x20) {
+        // some tables are missing the 0x00 - 0x20 part
+        med = *(src - 1);
+      } else {
+        res = NS_ERROR_UENC_NOMAPPING;
+        break;
+      }
+    }
+
+    bool charFound;
+    if (aScanClass == uMultibytesCharset) {
+      NS_ASSERTION(aShiftOutTable, "shift table missing");
+      charFound = uGenerateShift(aShiftOutTable, 0, med,
+                                 (uint8_t *)dest, destLen, 
+                                 (uint32_t *)&bcw);
+    } else {
+      charFound = uGenerate(aScanClass, 0, med,
+                            (uint8_t *)dest, destLen, 
+                            (uint32_t *)&bcw);
+    }
+    if (!charFound) {
+      src--;
+      res = NS_OK_UENC_MOREOUTPUT;
+      break;
+    }
+
+    dest += bcw;
+    destLen -= bcw;
+  }
+
+  *aSrcLength = src - aSrc;
+  *aDestLength  = dest - aDest;
+  return res;
+}
+
+nsresult nsUnicodeEncodeHelper::ConvertByMultiTable(
+                                     const char16_t * aSrc, 
+                                     int32_t * aSrcLength, 
+                                     char * aDest, 
+                                     int32_t * aDestLength, 
+                                     int32_t aTableCount, 
+                                     uScanClassID * aScanClassArray,
+                                     uShiftOutTable ** aShiftOutTable, 
+                                     uMappingTable  ** aMappingTable)
+{
+  const char16_t * src = aSrc;
+  const char16_t * srcEnd = aSrc + *aSrcLength;
+  char * dest = aDest;
+  int32_t destLen = *aDestLength;
+
+  char16_t med;
+  int32_t bcw; // byte count for write;
+  nsresult res = NS_OK;
+  int32_t i;
+
+  while (src < srcEnd) {
+    for (i=0; i<aTableCount; i++) 
+      if (uMapCode((uTable*) aMappingTable[i], static_cast<uint16_t>(*src), reinterpret_cast<uint16_t*>(&med))) break;
+
+    src++;
+    if (i == aTableCount) {
+      res = NS_ERROR_UENC_NOMAPPING;
+      break;
+    }
+
+    bool charFound;
+    if (aScanClassArray[i] == uMultibytesCharset) {
+      NS_ASSERTION(aShiftOutTable[i], "shift table missing");
+      charFound = uGenerateShift(aShiftOutTable[i], 0, med,
+                                 (uint8_t *)dest, destLen,
+                                 (uint32_t *)&bcw);
+    }
+    else
+      charFound = uGenerate(aScanClassArray[i], 0, med,
+                            (uint8_t *)dest, destLen, 
+                            (uint32_t *)&bcw);
+    if (!charFound) { 
+      src--;
+      res = NS_OK_UENC_MOREOUTPUT;
+      break;
+    }
+
+    dest += bcw;
+    destLen -= bcw;
+  }
+
+  *aSrcLength = src - aSrc;
+  *aDestLength  = dest - aDest;
+  return res;
+}