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, 293 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/oned/BC_OnedCode39Reader.cpp b/xfa/src/fxbarcode/oned/BC_OnedCode39Reader.cpp
new file mode 100644
index 0000000000..b19343943b
--- /dev/null
+++ b/xfa/src/fxbarcode/oned/BC_OnedCode39Reader.cpp
@@ -0,0 +1,293 @@
+// 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 "../barcode.h"

+#include "../BC_Reader.h"

+#include "../common/BC_CommonBitArray.h"

+#include "BC_OneDReader.h"

+#include "BC_OnedCode39Reader.h"

+FX_LPCSTR CBC_OnedCode39Reader::ALPHABET_STRING = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%";

+FX_LPCSTR CBC_OnedCode39Reader::CHECKSUM_STRING = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%";

+const FX_INT32 CBC_OnedCode39Reader::CHARACTER_ENCODINGS[44] = {

+    0x034, 0x121, 0x061, 0x160, 0x031, 0x130, 0x070, 0x025, 0x124, 0x064,

+    0x109, 0x049, 0x148, 0x019, 0x118, 0x058, 0x00D, 0x10C, 0x04C, 0x01C,

+    0x103, 0x043, 0x142, 0x013, 0x112, 0x052, 0x007, 0x106, 0x046, 0x016,

+    0x181, 0x0C1, 0x1C0, 0x091, 0x190, 0x0D0, 0x085, 0x184, 0x0C4, 0x094,

+    0x0A8, 0x0A2, 0x08A, 0x02A

+};

+const FX_INT32 CBC_OnedCode39Reader::ASTERISK_ENCODING = 0x094;

+CBC_OnedCode39Reader::CBC_OnedCode39Reader(): m_extendedMode(FALSE), m_usingCheckDigit(FALSE)

+{

+}

+CBC_OnedCode39Reader::CBC_OnedCode39Reader(FX_BOOL usingCheckDigit)

+{

+    m_usingCheckDigit = usingCheckDigit;

+    m_extendedMode = FALSE;

+}

+CBC_OnedCode39Reader::CBC_OnedCode39Reader(FX_BOOL usingCheckDigit, FX_BOOL extendedMode)

+{

+    m_extendedMode = extendedMode;

+    m_usingCheckDigit = usingCheckDigit;

+}

+CBC_OnedCode39Reader::~CBC_OnedCode39Reader()

+{

+}

+CFX_ByteString CBC_OnedCode39Reader::DecodeRow(FX_INT32 rowNumber, CBC_CommonBitArray *row, FX_INT32 hints, FX_INT32 &e)

+{

+    CFX_Int32Array *start = FindAsteriskPattern(row, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, "");

+    FX_INT32 nextStart = (*start)[1];

+    if(start != NULL) {

+        delete start;

+        start = NULL;

+    }

+    FX_INT32 end = row->GetSize();

+    while (nextStart < end && !row->Get(nextStart)) {

+        nextStart++;

+    }

+    CFX_ByteString result;

+    CFX_Int32Array counters;

+    counters.SetSize(9);

+    FX_CHAR decodedChar;

+    FX_INT32 lastStart;

+    do {

+        RecordPattern(row, nextStart, &counters, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, "");

+        FX_INT32 pattern = ToNarrowWidePattern(&counters);

+        if (pattern < 0) {

+            e = BCExceptionNotFound;

+            return "";

+        }

+        decodedChar = PatternToChar(pattern, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, "");

+        result += decodedChar;

+        lastStart = nextStart;

+        for (FX_INT32 i = 0; i < counters.GetSize(); i++) {

+            nextStart += counters[i];

+        }

+        while (nextStart < end && !row->Get(nextStart)) {

+            nextStart++;

+        }

+    } while (decodedChar != '*');

+    result = result.Mid(0, result.GetLength() - 1);

+    FX_INT32 lastPatternSize = 0;

+    for (FX_INT32 j = 0; j < counters.GetSize(); j++) {

+        lastPatternSize += counters[j];

+    }

+    FX_INT32 whiteSpaceAfterEnd = nextStart - lastStart - lastPatternSize;

+    if(m_usingCheckDigit) {

+        FX_INT32 max = result.GetLength() - 1;

+        FX_INT32 total = 0;

+        FX_INT32 len = (FX_INT32)strlen(ALPHABET_STRING);

+        for (FX_INT32 k = 0; k < max; k++) {

+            for (FX_INT32 j = 0; j < len; j++)

+                if (ALPHABET_STRING[j] == result[k]) {

+                    total += j;

+                }

+        }

+        if (result[max] != (ALPHABET_STRING)[total % 43]) {

+            e = BCExceptionChecksumException;

+            return "";

+        }

+        result = result.Mid(0, result.GetLength() - 1);

+    }

+    if (result.GetLength() == 0) {

+        e  = BCExceptionNotFound;

+        return "";

+    }

+    if(m_extendedMode) {

+        CFX_ByteString bytestr = DecodeExtended(result, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, "");

+        return bytestr;

+    } else {

+        return result;

+    }

+}

+CFX_Int32Array *CBC_OnedCode39Reader::FindAsteriskPattern(CBC_CommonBitArray *row, FX_INT32 &e)

+{

+    FX_INT32 width = row->GetSize();

+    FX_INT32 rowOffset = 0;

+    while (rowOffset < width) {

+        if (row->Get(rowOffset)) {

+            break;

+        }

+        rowOffset++;

+    }

+    FX_INT32 counterPosition = 0;

+    CFX_Int32Array counters;

+    counters.SetSize(9);

+    FX_INT32 patternStart = rowOffset;

+    FX_BOOL isWhite = FALSE;

+    FX_INT32 patternLength = counters.GetSize();

+    for (FX_INT32 i = rowOffset; i < width; i++) {

+        FX_BOOL pixel = row->Get(i);

+        if (pixel ^ isWhite) {

+            counters[counterPosition]++;

+        } else {

+            if (counterPosition == patternLength - 1) {

+                if (ToNarrowWidePattern(&counters) == ASTERISK_ENCODING) {

+                    FX_BOOL bT1 =  row->IsRange(FX_MAX(0, patternStart - (i - patternStart) / 2), patternStart, FALSE, e);

+                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+                    if (bT1) {

+                        CFX_Int32Array *result = FX_NEW CFX_Int32Array;

+                        result->SetSize(2);

+                        (*result)[0] = patternStart;

+                        (*result)[1] = i;

+                        return result;

+                    }

+                }

+                patternStart += counters[0] + counters[1];

+                for (FX_INT32 y = 2; y < patternLength; y++) {

+                    counters[y - 2] = counters[y];

+                }

+                counters[patternLength - 2] = 0;

+                counters[patternLength - 1] = 0;

+                counterPosition--;

+            } else {

+                counterPosition++;

+            }

+            counters[counterPosition] = 1;

+            isWhite = !isWhite;

+        }

+    }

+    e = BCExceptionNotFound;

+    return NULL;

+}

+FX_INT32 CBC_OnedCode39Reader::ToNarrowWidePattern(CFX_Int32Array *counters)

+{

+    FX_INT32 numCounters = counters->GetSize();

+    FX_INT32 maxNarrowCounter = 0;

+    FX_INT32 wideCounters;

+    do {

+#undef max

+        FX_INT32 minCounter = FXSYS_IntMax;

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

+            FX_INT32 counter = (*counters)[i];

+            if (counter < minCounter && counter > maxNarrowCounter) {

+                minCounter = counter;

+            }

+        }

+        maxNarrowCounter = minCounter;

+        wideCounters = 0;

+        FX_INT32 totalWideCountersWidth = 0;

+        FX_INT32 pattern = 0;

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

+            FX_INT32 counter = (*counters)[j];

+            if ((*counters)[j] > maxNarrowCounter) {

+                pattern |= 1 << (numCounters - 1 - j);

+                wideCounters++;

+                totalWideCountersWidth += counter;

+            }

+        }

+        if (wideCounters == 3) {

+            for (FX_INT32 k = 0; k < numCounters && wideCounters > 0; k++) {

+                FX_INT32 counter = (*counters)[k];

+                if ((*counters)[k] > maxNarrowCounter) {

+                    wideCounters--;

+                    if ((counter << 1) >= totalWideCountersWidth) {

+                        return -1;

+                    }

+                }

+            }

+            return pattern;

+        }

+    } while (wideCounters > 3);

+    return -1;

+}

+FX_CHAR CBC_OnedCode39Reader::PatternToChar(FX_INT32 pattern, FX_INT32 &e)

+{

+    for (FX_INT32 i = 0; i < 44; i++) {

+        if (CHARACTER_ENCODINGS[i] == pattern) {

+            return (ALPHABET_STRING)[i];

+        }

+    }

+    e = BCExceptionNotFound;

+    return 0;

+}

+CFX_ByteString CBC_OnedCode39Reader::DecodeExtended(CFX_ByteString &encoded, FX_INT32 &e)

+{

+    FX_INT32 length = encoded.GetLength();

+    CFX_ByteString decoded;

+    FX_CHAR c, next;

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

+        c = encoded[i];

+        if(c == '+' || c == '$' || c == '%' || c == '/') {

+            next = encoded[i + 1];

+            FX_CHAR decodedChar = '\0';

+            switch (c) {

+                case '+':

+                    if (next >= 'A' && next <= 'Z') {

+                        decodedChar = (FX_CHAR) (next + 32);

+                    } else {

+                        e = BCExceptionFormatException;

+                        return "";

+                    }

+                    break;

+                case '$':

+                    if (next >= 'A' && next <= 'Z') {

+                        decodedChar = (FX_CHAR) (next - 64);

+                    } else {

+                        e = BCExceptionFormatException;

+                        return "";

+                    }

+                    break;

+                case '%':

+                    if (next >= 'A' && next <= 'E') {

+                        decodedChar = (FX_CHAR) (next - 38);

+                    } else if (next >= 'F' && next <= 'J') {

+                        decodedChar = (FX_CHAR) (next - 11);

+                    } else if (next >= 'K' && next <= 'O' && next != 'M' && next != 'N') {

+                        decodedChar = (FX_CHAR) (next + 16);

+                    } else if (next >= 'P' && next <= 'S') {

+                        decodedChar = (FX_CHAR) (next + 43);

+                    } else if (next == 'U') {

+                        decodedChar = (FX_CHAR) 0;

+                    } else if (next == 'V') {

+                        decodedChar = (FX_CHAR) 64;

+                    } else if (next == 'W') {

+                        decodedChar = (FX_CHAR) 96;

+                    } else if (next == 'T' || next == 'X' || next == 'Y' || next == 'Z') {

+                        decodedChar = (FX_CHAR) 127;

+                    } else {

+                        e = BCExceptionFormatException;

+                        return "";

+                    }

+                    break;

+                case '/':

+                    if (next >= 'A' && next <= 'O') {

+                        decodedChar = (FX_CHAR) (next - 32);

+                    } else if (next == 'Z') {

+                        decodedChar = ':';

+                    } else {

+                        e = BCExceptionFormatException;

+                        return "";

+                    }

+                    break;

+            }

+            decoded += decodedChar;

+            i++;

+        } else {

+            decoded += c;

+        }

+    }

+    return decoded;

+}