1 files changed, 96 insertions, 0 deletions
diff --git a/xfa/fxbarcode/oned/BC_OnedEAN13Reader.cpp b/xfa/fxbarcode/oned/BC_OnedEAN13Reader.cpp
new file mode 100644
index 0000000000..83fea7d5f2
--- /dev/null
+++ b/xfa/fxbarcode/oned/BC_OnedEAN13Reader.cpp
@@ -0,0 +1,96 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+// Original code is licensed as follows:
+/*
+ * Copyright 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "xfa/fxbarcode/BC_Reader.h"
+#include "xfa/fxbarcode/common/BC_CommonBitArray.h"
+#include "xfa/fxbarcode/oned/BC_OneDReader.h"
+#include "xfa/fxbarcode/oned/BC_OneDimReader.h"
+#include "xfa/fxbarcode/oned/BC_OnedEAN13Reader.h"
+#include "xfa/fxbarcode/utils.h"
+
+const int32_t CBC_OnedEAN13Reader::FIRST_DIGIT_ENCODINGS[10] = {
+    0x00, 0x0B, 0x0D, 0xE, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A};
+
+CBC_OnedEAN13Reader::CBC_OnedEAN13Reader() {}
+CBC_OnedEAN13Reader::~CBC_OnedEAN13Reader() {}
+void CBC_OnedEAN13Reader::DetermineFirstDigit(CFX_ByteString& result,
+                                              int32_t lgPatternFound,
+                                              int32_t& e) {
+  for (int32_t d = 0; d < 10; d++) {
+    if (lgPatternFound == FIRST_DIGIT_ENCODINGS[d]) {
+      result.Insert(0, (FX_CHAR)('0' + d));
+      return;
+    }
+  }
+  e = BCExceptionNotFound;
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+}
+int32_t CBC_OnedEAN13Reader::DecodeMiddle(CBC_CommonBitArray* row,
+                                          CFX_Int32Array* startRange,
+                                          CFX_ByteString& resultString,
+                                          int32_t& e) {
+  CFX_Int32Array counters;
+  counters.Add(0);
+  counters.Add(0);
+  counters.Add(0);
+  counters.Add(0);
+  int32_t end = row->GetSize();
+  int32_t rowOffset = (*startRange)[1];
+  int32_t lgPatternFound = 0;
+  for (int32_t x = 0; x < 6 && rowOffset < end; x++) {
+    int32_t bestMatch =
+        DecodeDigit(row, &counters, rowOffset,
+                    &(CBC_OneDimReader::L_AND_G_PATTERNS[0][0]), 20, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+    resultString += (FX_CHAR)('0' + bestMatch % 10);
+    for (int32_t i = 0; i < counters.GetSize(); i++) {
+      rowOffset += counters[i];
+    }
+    if (bestMatch >= 10) {
+      lgPatternFound |= 1 << (5 - x);
+    }
+  }
+  DetermineFirstDigit(resultString, lgPatternFound, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+  CFX_Int32Array result;
+  result.Add(CBC_OneDimReader::MIDDLE_PATTERN[0]);
+  result.Add(CBC_OneDimReader::MIDDLE_PATTERN[1]);
+  result.Add(CBC_OneDimReader::MIDDLE_PATTERN[2]);
+  result.Add(CBC_OneDimReader::MIDDLE_PATTERN[3]);
+  result.Add(CBC_OneDimReader::MIDDLE_PATTERN[4]);
+  CFX_Int32Array* middleRange =
+      FindGuardPattern(row, rowOffset, TRUE, &result, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+  rowOffset = (*middleRange)[1];
+  delete middleRange;
+  for (int32_t Y = 0; Y < 6 && rowOffset < end; Y++) {
+    int32_t bestMatch =
+        DecodeDigit(row, &counters, rowOffset,
+                    &(CBC_OneDimReader::L_PATTERNS[0][0]), 10, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+    resultString += (FX_CHAR)('0' + bestMatch);
+    for (int32_t k = 0; k < counters.GetSize(); k++) {
+      rowOffset += counters[k];
+    }
+  }
+  return rowOffset;
+}