Move xfa/src up to xfa/.

This CL moves the xfa/src files up to the xfa/ directory and fixes the includes,
include guards, and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1803723002 .

1 files changed, 332 insertions, 0 deletions

diff --git a/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp b/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
new file mode 100644
index 0000000000..d0bbe5ab0a
--- /dev/null
+++ b/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
@@ -0,0 +1,332 @@
+// 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 2012 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/pdf417/BC_PDF417Common.h"
+#include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.h"
+#include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.h"
+#include "xfa/fxbarcode/utils.h"
+
+CBC_PDF417ECModulusPoly::CBC_PDF417ECModulusPoly(CBC_PDF417ECModulusGF* field,
+                                                 CFX_Int32Array& coefficients,
+                                                 int32_t& e) {
+  if (coefficients.GetSize() == 0) {
+    e = BCExceptionIllegalArgument;
+  }
+  m_field = field;
+  int32_t coefficientsLength = coefficients.GetSize();
+  if (coefficientsLength > 1 && coefficients[0] == 0) {
+    int32_t firstNonZero = 1;
+    while (firstNonZero < coefficientsLength &&
+           coefficients[firstNonZero] == 0) {
+      firstNonZero++;
+    }
+    if (firstNonZero == coefficientsLength) {
+      m_coefficients = field->getZero()->m_coefficients;
+    } else {
+      m_coefficients.SetSize(coefficientsLength - firstNonZero);
+      int32_t l = 0;
+      for (int32_t i = firstNonZero;
+           i < firstNonZero + m_coefficients.GetSize(); i++) {
+        m_coefficients.SetAt(l, coefficients.GetAt(i));
+        l++;
+      }
+    }
+  } else {
+    m_coefficients.Copy(coefficients);
+  }
+}
+CBC_PDF417ECModulusPoly::~CBC_PDF417ECModulusPoly() {}
+CFX_Int32Array& CBC_PDF417ECModulusPoly::getCoefficients() {
+  return m_coefficients;
+}
+CBC_PDF417ECModulusGF* CBC_PDF417ECModulusPoly::getField() {
+  return m_field;
+}
+int32_t CBC_PDF417ECModulusPoly::getDegree() {
+  return m_coefficients.GetSize() - 1;
+}
+FX_BOOL CBC_PDF417ECModulusPoly::isZero() {
+  return m_coefficients[0] == 0;
+}
+int32_t CBC_PDF417ECModulusPoly::getCoefficient(int32_t degree) {
+  return m_coefficients[m_coefficients.GetSize() - 1 - degree];
+}
+int32_t CBC_PDF417ECModulusPoly::evaluateAt(int32_t a) {
+  if (a == 0) {
+    return getCoefficient(0);
+  }
+  int32_t size = m_coefficients.GetSize();
+  if (a == 1) {
+    int32_t result = 0;
+    for (int32_t l = 0; l < m_coefficients.GetSize(); l++) {
+      int32_t coefficient = m_coefficients.GetAt(l);
+      result = m_field->add(result, coefficient);
+    }
+    return result;
+  }
+  int32_t result = m_coefficients[0];
+  for (int32_t i = 1; i < size; i++) {
+    result = m_field->add(m_field->multiply(a, result), m_coefficients[i]);
+  }
+  return result;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::add(
+    CBC_PDF417ECModulusPoly* other,
+    int32_t& e) {
+  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  if (isZero()) {
+    modulusPoly = new CBC_PDF417ECModulusPoly(other->getField(),
+                                              other->getCoefficients(), e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  if (other->isZero()) {
+    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  CFX_Int32Array smallerCoefficients;
+  smallerCoefficients.Copy(m_coefficients);
+  CFX_Int32Array largerCoefficients;
+  largerCoefficients.Copy(other->m_coefficients);
+  if (smallerCoefficients.GetSize() > largerCoefficients.GetSize()) {
+    CFX_Int32Array temp;
+    temp.Copy(smallerCoefficients);
+    smallerCoefficients.Copy(largerCoefficients);
+    largerCoefficients.Copy(temp);
+  }
+  CFX_Int32Array sumDiff;
+  sumDiff.SetSize(largerCoefficients.GetSize());
+  int32_t lengthDiff =
+      largerCoefficients.GetSize() - smallerCoefficients.GetSize();
+  for (int32_t l = 0; l < lengthDiff; l++) {
+    sumDiff.SetAt(l, largerCoefficients.GetAt(l));
+  }
+  for (int32_t i = lengthDiff; i < largerCoefficients.GetSize(); i++) {
+    sumDiff[i] = m_field->add(smallerCoefficients[i - lengthDiff],
+                              largerCoefficients[i]);
+  }
+  modulusPoly = new CBC_PDF417ECModulusPoly(m_field, sumDiff, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::subtract(
+    CBC_PDF417ECModulusPoly* other,
+    int32_t& e) {
+  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  if (other->isZero()) {
+    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  CBC_PDF417ECModulusPoly* poly = other->negative(e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  modulusPoly = add(poly, e);
+  delete poly;
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiply(
+    CBC_PDF417ECModulusPoly* other,
+    int32_t& e) {
+  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  if (isZero() || other->isZero()) {
+    modulusPoly =
+        new CBC_PDF417ECModulusPoly(m_field->getZero()->getField(),
+                                    m_field->getZero()->getCoefficients(), e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  CFX_Int32Array aCoefficients;
+  aCoefficients.Copy(m_coefficients);
+  int32_t aLength = aCoefficients.GetSize();
+  CFX_Int32Array bCoefficients;
+  bCoefficients.Copy(other->m_coefficients);
+  int32_t bLength = bCoefficients.GetSize();
+  CFX_Int32Array product;
+  product.SetSize(aLength + bLength - 1);
+  for (int32_t i = 0; i < aLength; i++) {
+    int32_t aCoeff = aCoefficients[i];
+    for (int32_t j = 0; j < bLength; j++) {
+      product[i + j] = m_field->add(
+          product[i + j], m_field->multiply(aCoeff, bCoefficients[j]));
+    }
+  }
+  modulusPoly = new CBC_PDF417ECModulusPoly(m_field, product, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::negative(int32_t& e) {
+  int32_t size = m_coefficients.GetSize();
+  CFX_Int32Array negativeCoefficients;
+  negativeCoefficients.SetSize(size);
+  for (int32_t i = 0; i < size; i++) {
+    negativeCoefficients[i] = m_field->subtract(0, m_coefficients[i]);
+  }
+  CBC_PDF417ECModulusPoly* modulusPoly =
+      new CBC_PDF417ECModulusPoly(m_field, negativeCoefficients, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiply(int32_t scalar,
+                                                           int32_t& e) {
+  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  if (scalar == 0) {
+    modulusPoly =
+        new CBC_PDF417ECModulusPoly(m_field->getZero()->getField(),
+                                    m_field->getZero()->getCoefficients(), e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  if (scalar == 1) {
+    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  int32_t size = m_coefficients.GetSize();
+  CFX_Int32Array product;
+  product.SetSize(size);
+  for (int32_t i = 0; i < size; i++) {
+    product[i] = m_field->multiply(m_coefficients[i], scalar);
+  }
+  modulusPoly = new CBC_PDF417ECModulusPoly(m_field, product, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiplyByMonomial(
+    int32_t degree,
+    int32_t coefficient,
+    int32_t& e) {
+  if (degree < 0) {
+    e = BCExceptionIllegalArgument;
+    return NULL;
+  }
+  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  if (coefficient == 0) {
+    modulusPoly = new CBC_PDF417ECModulusPoly(
+        m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+  }
+  int32_t size = m_coefficients.GetSize();
+  CFX_Int32Array product;
+  product.SetSize(size + degree);
+  for (int32_t i = 0; i < size; i++) {
+    product[i] = m_field->multiply(m_coefficients[i], coefficient);
+  }
+  modulusPoly = new CBC_PDF417ECModulusPoly(m_field, product, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return modulusPoly;
+}
+CFX_PtrArray* CBC_PDF417ECModulusPoly::divide(CBC_PDF417ECModulusPoly* other,
+                                              int32_t& e) {
+  if (other->isZero()) {
+    e = BCExceptionDivideByZero;
+    return NULL;
+  }
+  CBC_PDF417ECModulusPoly* quotient = new CBC_PDF417ECModulusPoly(
+      m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CBC_PDF417ECModulusPoly* remainder =
+      new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
+  if (e != BCExceptionNO) {
+    delete quotient;
+    return NULL;
+  }
+  int32_t denominatorLeadingTerm = other->getCoefficient(other->getDegree());
+  int32_t inverseDenominatorLeadingTerm =
+      m_field->inverse(denominatorLeadingTerm, e);
+  if (e != BCExceptionNO) {
+    delete quotient;
+    delete remainder;
+    return NULL;
+  }
+  while (remainder->getDegree() >= other->getDegree() && !remainder->isZero()) {
+    int32_t degreeDifference = remainder->getDegree() - other->getDegree();
+    int32_t scale =
+        m_field->multiply(remainder->getCoefficient(remainder->getDegree()),
+                          inverseDenominatorLeadingTerm);
+    CBC_PDF417ECModulusPoly* term =
+        other->multiplyByMonomial(degreeDifference, scale, e);
+    if (e != BCExceptionNO) {
+      delete quotient;
+      delete remainder;
+      return NULL;
+    }
+    CBC_PDF417ECModulusPoly* iterationQuotient =
+        m_field->buildMonomial(degreeDifference, scale, e);
+    if (e != BCExceptionNO) {
+      delete quotient;
+      delete remainder;
+      delete term;
+      return NULL;
+    }
+    CBC_PDF417ECModulusPoly* temp = quotient;
+    quotient = temp->add(iterationQuotient, e);
+    delete iterationQuotient;
+    delete temp;
+    if (e != BCExceptionNO) {
+      delete remainder;
+      return NULL;
+    }
+    temp = remainder;
+    remainder = temp->subtract(term, e);
+    delete term;
+    delete temp;
+    if (e != BCExceptionNO) {
+      delete quotient;
+      return NULL;
+    }
+  }
+  CFX_PtrArray* modulusPoly = new CFX_PtrArray;
+  modulusPoly->Add(quotient);
+  modulusPoly->Add(remainder);
+  return modulusPoly;
+}
+CFX_ByteString CBC_PDF417ECModulusPoly::toString() {
+  CFX_ByteString result;
+  for (int32_t degree = getDegree(); degree >= 0; degree--) {
+    int32_t coefficient = getCoefficient(degree);
+    if (coefficient != 0) {
+      if (coefficient < 0) {
+        result += " - ";
+        coefficient = -coefficient;
+      } else {
+        if (result.GetLength() > 0) {
+          result += " + ";
+        }
+      }
+      if (degree == 0 || coefficient != 1) {
+        result += coefficient;
+      }
+      if (degree != 0) {
+        if (degree == 1) {
+          result += 'x';
+        } else {
+          result += "x^";
+          result += degree;
+        }
+      }
+    }
+  }
+  return result;
+}