Organize barcode codes into modules.

xfa/src/fxbarcode/src/BC_UtilRSS.cpp

-// 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 2009 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 "include/BC_UtilRSS.h"
-CBC_UtilRSS::CBC_UtilRSS()
-{
-}
-CBC_UtilRSS::~CBC_UtilRSS()
-{
-}
-CFX_Int32Array *CBC_UtilRSS::GetRssWidths(FX_INT32 val, FX_INT32 n, FX_INT32 elements, FX_INT32 maxWidth, FX_BOOL noNarrow)
-{
-    CFX_Int32Array *iTemp =  FX_NEW CFX_Int32Array;
-    iTemp->SetSize(elements);
-    CBC_AutoPtr<CFX_Int32Array > widths(iTemp);
-    FX_INT32 bar;
-    FX_INT32 narrowMask = 0;
-    for (bar = 0; bar < elements - 1; bar++) {
-        narrowMask |= (1 << bar);
-        FX_INT32 elmWidth = 1;
-        FX_INT32 subVal;
-        while (TRUE) {
-            subVal = Combins(n - elmWidth - 1, elements - bar - 2);
-            if (noNarrow && (narrowMask == 0) &&
-                    (n - elmWidth - (elements - bar - 1) >= elements - bar - 1)) {
-                subVal -= Combins(n - elmWidth - (elements - bar), elements - bar - 2);
-            }
-            if (elements - bar - 1 > 1) {
-                FX_INT32 lessVal = 0;
-                for (FX_INT32 mxwElement = n - elmWidth - (elements - bar - 2);
-                        mxwElement > maxWidth;
-                        mxwElement--) {
-                    lessVal += Combins(n - elmWidth - mxwElement - 1, elements - bar - 3);
-                }
-                subVal -= lessVal * (elements - 1 - bar);
-            } else if (n - elmWidth > maxWidth) {
-                subVal--;
-            }
-            val -= subVal;
-            if (val < 0) {
-                break;
-            }
-            elmWidth++;
-            narrowMask &= ~(1 << bar);
-        }
-        val += subVal;
-        n -= elmWidth;
-        (*widths)[bar] = elmWidth;
-    }
-    (*widths)[bar] = n;
-    return widths.release();
-}
-FX_INT32 CBC_UtilRSS::GetRSSvalue(CFX_Int32Array &widths, FX_INT32 maxWidth, FX_BOOL noNarrow)
-{
-    FX_INT32 elements = widths.GetSize();
-    FX_INT32 n = 0;
-    for (FX_INT32 i = 0; i < elements; i++) {
-        n += widths[i];
-    }
-    FX_INT32 val = 0;
-    FX_INT32 narrowMask = 0;
-    for (FX_INT32 bar = 0; bar < elements - 1; bar++) {
-        FX_INT32 elmWidth;
-        for (elmWidth = 1, narrowMask |= (1 << bar);
-                elmWidth < widths[bar];
-                elmWidth++, narrowMask &= ~(1 << bar)) {
-            FX_INT32 subVal = Combins(n - elmWidth - 1, elements - bar - 2);
-            if (noNarrow && (narrowMask == 0) &&
-                    (n - elmWidth - (elements - bar - 1) >= elements - bar - 1)) {
-                subVal -= Combins(n - elmWidth - (elements - bar),
-                                  elements - bar - 2);
-            }
-            if (elements - bar - 1 > 1) {
-                FX_INT32 lessVal = 0;
-                for (FX_INT32 mxwElement = n - elmWidth - (elements - bar - 2);
-                        mxwElement > maxWidth; mxwElement--) {
-                    lessVal += Combins(n - elmWidth - mxwElement - 1,
-                                       elements - bar - 3);
-                }
-                subVal -= lessVal * (elements - 1 - bar);
-            } else if (n - elmWidth > maxWidth) {
-                subVal--;
-            }
-            val += subVal;
-        }
-        n -= elmWidth;
-    }
-    return val;
-}
-FX_INT32 CBC_UtilRSS::Combins(FX_INT32 n, FX_INT32 r)
-{
-    FX_INT32 maxDenom;
-    FX_INT32 minDenom;
-    if (n - r > r) {
-        minDenom = r;
-        maxDenom = n - r;
-    } else {
-        minDenom = n - r;
-        maxDenom = r;
-    }
-    FX_INT32 val = 1;
-    FX_INT32 j = 1;
-    for (FX_INT32 i = n; i > maxDenom; i--) {
-        val *= i;
-        if (j <= minDenom) {
-            val /= j;
-            j++;
-        }
-    }
-    while (j <= minDenom) {
-        val /= j;
-        j++;
-    }
-    return val;
-}
-CFX_Int32Array *CBC_UtilRSS::Elements(CFX_Int32Array &eDist, FX_INT32 N, FX_INT32 K)
-{
-    CFX_Int32Array *widths = FX_NEW CFX_Int32Array;
-    widths->SetSize(eDist.GetSize() + 2);
-    FX_INT32 twoK = K << 1;
-    (*widths)[0] = 1;
-    FX_INT32 i;
-    FX_INT32 minEven = 10;
-    FX_INT32 barSum = 1;
-    for (i = 1; i < twoK - 2; i += 2) {
-        (*widths)[i] = eDist[i - 1] - (*widths)[i - 1];
-        (*widths)[i + 1] = eDist[i] - (*widths)[i];
-        barSum += (*widths)[i] + (*widths)[i + 1];
-        if ((*widths)[i] < minEven) {
-            minEven = (*widths)[i];
-        }
-    }
-    (*widths)[twoK - 1] = N - barSum;
-    if ((*widths)[twoK - 1] < minEven) {
-        minEven = (*widths)[twoK - 1];
-    }
-    if (minEven > 1) {
-        for (i = 0; i < twoK; i += 2) {
-            (*widths)[i] += minEven - 1;
-            (*widths)[i + 1] -= minEven - 1;
-        }
-    }
-    return widths;
-}