Organize barcode codes into modules.

Previously all the files in barcode are lumped together.
The naming of some files are inconsistent,
leading to difficult understanding of the structure.
Now files are grouped based on different barcode type like in zxing.
This also matches what it looks like in other xfa folders.
The file names in each folder could be further modified to be consistent.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/842043002

1 files changed, 316 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp b/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
new file mode 100644
index 0000000000..39d3fd8056
--- /dev/null
+++ b/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.cpp
@@ -0,0 +1,316 @@
+// 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 "../barcode.h"

+#include "BC_PDF417Common.h"

+#include "BC_PDF417ECModulusGF.h"

+#include "BC_PDF417ECModulusPoly.h"

+CBC_PDF417ECModulusPoly::CBC_PDF417ECModulusPoly(CBC_PDF417ECModulusGF* field, CFX_Int32Array &coefficients, FX_INT32 &e)

+{

+    if (coefficients.GetSize() == 0) {

+        e = BCExceptionIllegalArgument;

+    }

+    m_field = field;

+    FX_INT32 coefficientsLength = coefficients.GetSize();

+    if (coefficientsLength > 1 && coefficients[0] == 0) {

+        FX_INT32 firstNonZero = 1;

+        while (firstNonZero < coefficientsLength && coefficients[firstNonZero] == 0) {

+            firstNonZero++;

+        }

+        if (firstNonZero == coefficientsLength) {

+            m_coefficients = field->getZero()->m_coefficients;

+        } else {

+            m_coefficients.SetSize(coefficientsLength - firstNonZero);

+            FX_INT32 l = 0;

+            for (FX_INT32 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;

+}

+FX_INT32 CBC_PDF417ECModulusPoly::getDegree()

+{

+    return m_coefficients.GetSize() - 1;

+}

+FX_BOOL CBC_PDF417ECModulusPoly::isZero()

+{

+    return m_coefficients[0] == 0;

+}

+FX_INT32 CBC_PDF417ECModulusPoly::getCoefficient(FX_INT32 degree)

+{

+    return m_coefficients[m_coefficients.GetSize() - 1 - degree];

+}

+FX_INT32 CBC_PDF417ECModulusPoly::evaluateAt(FX_INT32 a)

+{

+    if (a == 0) {

+        return getCoefficient(0);

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    if (a == 1) {

+        FX_INT32 result = 0;

+        for (FX_INT32 l = 0; l < m_coefficients.GetSize(); l++) {

+            FX_INT32 coefficient = m_coefficients.GetAt(l);

+            result = m_field->add(result, coefficient);

+        }

+        return result;

+    }

+    FX_INT32 result = m_coefficients[0];

+    for (FX_INT32 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, FX_INT32 &e)

+{

+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;

+    if (isZero()) {

+        modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(other->getField(), other->getCoefficients(), e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return modulusPoly;

+    }

+    if (other->isZero()) {

+        modulusPoly = FX_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());

+    FX_INT32 lengthDiff = largerCoefficients.GetSize() - smallerCoefficients.GetSize();

+    for (FX_INT32 l = 0; l < lengthDiff; l++) {

+        sumDiff.SetAt(l, largerCoefficients.GetAt(l));

+    }

+    for (FX_INT32 i = lengthDiff; i < largerCoefficients.GetSize(); i++) {

+        sumDiff[i] = m_field->add(smallerCoefficients[i - lengthDiff], largerCoefficients[i]);

+    }

+    modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, sumDiff, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return modulusPoly;

+}

+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::subtract(CBC_PDF417ECModulusPoly* other, FX_INT32 &e)

+{

+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;

+    if (other->isZero()) {

+        modulusPoly = FX_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, FX_INT32 &e)

+{

+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;

+    if (isZero() || other->isZero()) {

+        modulusPoly = FX_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);

+    FX_INT32 aLength = aCoefficients.GetSize();

+    CFX_Int32Array bCoefficients;

+    bCoefficients.Copy(other->m_coefficients);

+    FX_INT32 bLength = bCoefficients.GetSize();

+    CFX_Int32Array product;

+    product.SetSize(aLength + bLength - 1);

+    for (FX_INT32 i = 0; i < aLength; i++) {

+        FX_INT32 aCoeff = aCoefficients[i];

+        for (FX_INT32 j = 0; j < bLength; j++) {

+            product[i + j] = m_field->add(product[i + j], m_field->multiply(aCoeff, bCoefficients[j]));

+        }

+    }

+    modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return modulusPoly;

+}

+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::negative(FX_INT32 &e)

+{

+    FX_INT32 size = m_coefficients.GetSize();

+    CFX_Int32Array negativeCoefficients;

+    negativeCoefficients.SetSize(size);

+    for (FX_INT32 i = 0; i < size; i++) {

+        negativeCoefficients[i] = m_field->subtract(0, m_coefficients[i]);

+    }

+    CBC_PDF417ECModulusPoly* modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, negativeCoefficients, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return modulusPoly;

+}

+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiply(FX_INT32 scalar, FX_INT32 &e)

+{

+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;

+    if (scalar == 0) {

+        modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field->getZero()->getField(), m_field->getZero()->getCoefficients(), e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return modulusPoly;

+    }

+    if (scalar == 1) {

+        modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return modulusPoly;

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    CFX_Int32Array product;

+    product.SetSize(size);

+    for (FX_INT32 i = 0; i < size; i++) {

+        product[i] = m_field->multiply(m_coefficients[i], scalar);

+    }

+    modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return modulusPoly;

+}

+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusPoly::multiplyByMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &e)

+{

+    if (degree < 0) {

+        e = BCExceptionIllegalArgument;

+        return NULL;

+    }

+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;

+    if (coefficient == 0) {

+        modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return modulusPoly;

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    CFX_Int32Array product;

+    product.SetSize(size + degree);

+    for (FX_INT32 i = 0; i < size; i++) {

+        product[i] = m_field->multiply(m_coefficients[i], coefficient);

+    }

+    modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_field, product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return modulusPoly;

+}

+CFX_PtrArray* CBC_PDF417ECModulusPoly::divide(CBC_PDF417ECModulusPoly* other, FX_INT32 &e)

+{

+    if (other->isZero()) {

+        e = BCExceptionDivideByZero;

+        return NULL;

+    }

+    CBC_PDF417ECModulusPoly* quotient = FX_NEW CBC_PDF417ECModulusPoly(m_field->getZero()->m_field, m_field->getZero()->m_coefficients, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    CBC_PDF417ECModulusPoly* remainder = FX_NEW CBC_PDF417ECModulusPoly(m_field, m_coefficients, e);

+    if (e != BCExceptionNO) {

+        delete quotient;

+        return NULL;

+    }

+    FX_INT32 denominatorLeadingTerm = other->getCoefficient(other->getDegree());

+    FX_INT32 inverseDenominatorLeadingTerm = m_field->inverse(denominatorLeadingTerm, e);

+    if (e != BCExceptionNO) {

+        delete quotient;

+        delete remainder;

+        return NULL;

+    }

+    while (remainder->getDegree() >= other->getDegree() && !remainder->isZero()) {

+        FX_INT32 degreeDifference = remainder->getDegree() - other->getDegree();

+        FX_INT32 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 = FX_NEW CFX_PtrArray;

+    modulusPoly->Add(quotient);

+    modulusPoly->Add(remainder);

+    return modulusPoly;

+}

+CFX_ByteString CBC_PDF417ECModulusPoly::toString()

+{

+    CFX_ByteString result;

+    for (FX_INT32 degree = getDegree(); degree >= 0; degree--) {

+        FX_INT32 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;

+}