Remove barcode reading code.

We never read barcodes, we only write them. Remove code related to barcode
reading.

Review-Url: https://codereview.chromium.org/2071633002

1 files changed, 0 insertions, 323 deletions

diff --git a/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp b/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
deleted file mode 100644
index a41eeea472..0000000000
--- a/xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
+++ /dev/null
@@ -1,323 +0,0 @@
-// 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 <memory>
-
-#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 = nullptr;
-  if (isZero()) {
-    modulusPoly = new CBC_PDF417ECModulusPoly(other->getField(),
-                                              other->getCoefficients(), e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    return modulusPoly;
-  }
-  if (other->isZero()) {
-    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, nullptr);
-  return modulusPoly;
-}
-CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::subtract(
-    CBC_PDF417ECModulusPoly* other,
-    int32_t& e) {
-  CBC_PDF417ECModulusPoly* modulusPoly = nullptr;
-  if (other->isZero()) {
-    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    return modulusPoly;
-  }
-  CBC_PDF417ECModulusPoly* poly = other->negative(e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  modulusPoly = add(poly, e);
-  delete poly;
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  return modulusPoly;
-}
-CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiply(
-    CBC_PDF417ECModulusPoly* other,
-    int32_t& e) {
-  CBC_PDF417ECModulusPoly* modulusPoly = nullptr;
-  if (isZero() || other->isZero()) {
-    modulusPoly =
-        new CBC_PDF417ECModulusPoly(m_field->getZero()->getField(),
-                                    m_field->getZero()->getCoefficients(), e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, nullptr);
-  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, nullptr);
-  return modulusPoly;
-}
-CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiply(int32_t scalar,
-                                                           int32_t& e) {
-  CBC_PDF417ECModulusPoly* modulusPoly = nullptr;
-  if (scalar == 0) {
-    modulusPoly =
-        new CBC_PDF417ECModulusPoly(m_field->getZero()->getField(),
-                                    m_field->getZero()->getCoefficients(), e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    return modulusPoly;
-  }
-  if (scalar == 1) {
-    modulusPoly = new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, nullptr);
-  return modulusPoly;
-}
-
-CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiplyByMonomial(
-    int32_t degree,
-    int32_t coefficient,
-    int32_t& e) {
-  if (degree < 0) {
-    e = BCExceptionIllegalArgument;
-    return nullptr;
-  }
-  CBC_PDF417ECModulusPoly* modulusPoly = nullptr;
-  if (coefficient == 0) {
-    modulusPoly = new CBC_PDF417ECModulusPoly(
-        m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, nullptr);
-  return modulusPoly;
-}
-
-CFX_ArrayTemplate<CBC_PDF417ECModulusPoly*>* CBC_PDF417ECModulusPoly::divide(
-    CBC_PDF417ECModulusPoly* other,
-    int32_t& e) {
-  if (other->isZero()) {
-    e = BCExceptionDivideByZero;
-    return nullptr;
-  }
-  std::unique_ptr<CBC_PDF417ECModulusPoly> quotient(new CBC_PDF417ECModulusPoly(
-      m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_PDF417ECModulusPoly> remainder(
-      new CBC_PDF417ECModulusPoly(m_field, m_coefficients, e));
-  if (e != BCExceptionNO)
-    return nullptr;
-
-  int32_t denominatorLeadingTerm = other->getCoefficient(other->getDegree());
-  int32_t inverseDenominatorLeadingTerm =
-      m_field->inverse(denominatorLeadingTerm, e);
-  if (e != BCExceptionNO)
-    return nullptr;
-
-  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);
-    std::unique_ptr<CBC_PDF417ECModulusPoly> term(
-        other->multiplyByMonomial(degreeDifference, scale, e));
-    if (e != BCExceptionNO)
-      return nullptr;
-
-    std::unique_ptr<CBC_PDF417ECModulusPoly> iterationQuotient(
-        m_field->buildMonomial(degreeDifference, scale, e));
-    if (e != BCExceptionNO)
-      return nullptr;
-
-    quotient.reset(quotient->add(iterationQuotient.get(), e));
-    if (e != BCExceptionNO)
-      return nullptr;
-
-    remainder.reset(remainder->subtract(term.get(), e));
-    if (e != BCExceptionNO)
-      return nullptr;
-  }
-
-  CFX_ArrayTemplate<CBC_PDF417ECModulusPoly*>* modulusPoly =
-      new CFX_ArrayTemplate<CBC_PDF417ECModulusPoly*>();
-  modulusPoly->Add(quotient.release());
-  modulusPoly->Add(remainder.release());
-  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;
-}