// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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// Original code is licensed as follows:
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/*
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* Copyright 2006 Jeremias Maerki in part, and ZXing Authors in part
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "xfa/fxbarcode/pdf417/BC_PDF417HighLevelEncoder.h"
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#include "third_party/bigint/BigIntegerLibrary.hh"
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#include "xfa/fxbarcode/BC_UtilCodingConvert.h"
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#include "xfa/fxbarcode/pdf417/BC_PDF417Compaction.h"
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#include "xfa/fxbarcode/utils.h"
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#define SUBMODE_ALPHA 0
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#define SUBMODE_LOWER 1
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#define SUBMODE_MIXED 2
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int32_t CBC_PDF417HighLevelEncoder::TEXT_COMPACTION = 0;
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int32_t CBC_PDF417HighLevelEncoder::BYTE_COMPACTION = 1;
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int32_t CBC_PDF417HighLevelEncoder::NUMERIC_COMPACTION = 2;
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int32_t CBC_PDF417HighLevelEncoder::SUBMODE_PUNCTUATION = 3;
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int32_t CBC_PDF417HighLevelEncoder::LATCH_TO_TEXT = 900;
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int32_t CBC_PDF417HighLevelEncoder::LATCH_TO_BYTE_PADDED = 901;
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int32_t CBC_PDF417HighLevelEncoder::LATCH_TO_NUMERIC = 902;
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int32_t CBC_PDF417HighLevelEncoder::SHIFT_TO_BYTE = 913;
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int32_t CBC_PDF417HighLevelEncoder::LATCH_TO_BYTE = 924;
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uint8_t CBC_PDF417HighLevelEncoder::TEXT_MIXED_RAW[] = {
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 38, 13, 9, 44, 58,
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35, 45, 46, 36, 47, 43, 37, 42, 61, 94, 0, 32, 0, 0, 0};
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uint8_t CBC_PDF417HighLevelEncoder::TEXT_PUNCTUATION_RAW[] = {
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59, 60, 62, 64, 91, 92, 93, 95, 96, 126, 33, 13, 9, 44, 58,
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10, 45, 46, 36, 47, 34, 124, 42, 40, 41, 63, 123, 125, 39, 0};
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int32_t CBC_PDF417HighLevelEncoder::MIXED[128] = {0};
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int32_t CBC_PDF417HighLevelEncoder::PUNCTUATION[128] = {0};
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void CBC_PDF417HighLevelEncoder::Initialize() {
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Inverse();
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}
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void CBC_PDF417HighLevelEncoder::Finalize() {}
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CFX_WideString CBC_PDF417HighLevelEncoder::encodeHighLevel(
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CFX_WideString wideMsg,
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Compaction compaction,
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int32_t& e) {
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CFX_ByteString bytes;
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CBC_UtilCodingConvert::UnicodeToUTF8(wideMsg, bytes);
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CFX_WideString msg;
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int32_t len = bytes.GetLength();
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for (int32_t i = 0; i < len; i++) {
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FX_WCHAR ch = (FX_WCHAR)(bytes.GetAt(i) & 0xff);
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if (ch == '?' && bytes.GetAt(i) != '?') {
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e = BCExceptionCharactersOutsideISO88591Encoding;
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return CFX_WideString();
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}
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msg += ch;
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}
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CFX_ByteArray byteArr;
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for (int32_t k = 0; k < bytes.GetLength(); k++) {
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byteArr.Add(bytes.GetAt(k));
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}
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CFX_WideString sb;
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len = msg.GetLength();
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int32_t p = 0;
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int32_t textSubMode = SUBMODE_ALPHA;
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if (compaction == TEXT) {
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encodeText(msg, p, len, sb, textSubMode);
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} else if (compaction == BYTES) {
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encodeBinary(&byteArr, p, byteArr.GetSize(), BYTE_COMPACTION, sb);
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} else if (compaction == NUMERIC) {
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sb += (FX_WCHAR)LATCH_TO_NUMERIC;
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encodeNumeric(msg, p, len, sb);
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} else {
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int32_t encodingMode = LATCH_TO_TEXT;
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while (p < len) {
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int32_t n = determineConsecutiveDigitCount(msg, p);
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if (n >= 13) {
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sb += (FX_WCHAR)LATCH_TO_NUMERIC;
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encodingMode = NUMERIC_COMPACTION;
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textSubMode = SUBMODE_ALPHA;
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encodeNumeric(msg, p, n, sb);
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p += n;
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} else {
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int32_t t = determineConsecutiveTextCount(msg, p);
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if (t >= 5 || n == len) {
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if (encodingMode != TEXT_COMPACTION) {
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sb += (FX_WCHAR)LATCH_TO_TEXT;
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encodingMode = TEXT_COMPACTION;
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textSubMode = SUBMODE_ALPHA;
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}
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textSubMode = encodeText(msg, p, t, sb, textSubMode);
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p += t;
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} else {
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int32_t b = determineConsecutiveBinaryCount(msg, &byteArr, p, e);
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BC_EXCEPTION_CHECK_ReturnValue(e, (FX_WCHAR)' ');
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if (b == 0) {
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b = 1;
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}
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if (b == 1 && encodingMode == TEXT_COMPACTION) {
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encodeBinary(&byteArr, p, 1, TEXT_COMPACTION, sb);
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} else {
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encodeBinary(&byteArr, p, b, encodingMode, sb);
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encodingMode = BYTE_COMPACTION;
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textSubMode = SUBMODE_ALPHA;
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}
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p += b;
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}
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}
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}
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}
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return sb;
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}
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void CBC_PDF417HighLevelEncoder::Inverse() {
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for (size_t l = 0; l < FX_ArraySize(MIXED); ++l)
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MIXED[l] = -1;
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for (uint8_t i = 0; i < FX_ArraySize(TEXT_MIXED_RAW); ++i) {
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uint8_t b = TEXT_MIXED_RAW[i];
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if (b != 0)
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MIXED[b] = i;
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}
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for (size_t l = 0; l < FX_ArraySize(PUNCTUATION); ++l)
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PUNCTUATION[l] = -1;
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for (uint8_t i = 0; i < FX_ArraySize(TEXT_PUNCTUATION_RAW); ++i) {
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uint8_t b = TEXT_PUNCTUATION_RAW[i];
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if (b != 0)
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PUNCTUATION[b] = i;
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}
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}
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int32_t CBC_PDF417HighLevelEncoder::encodeText(CFX_WideString msg,
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int32_t startpos,
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int32_t count,
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CFX_WideString& sb,
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int32_t initialSubmode) {
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CFX_WideString tmp;
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int32_t submode = initialSubmode;
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int32_t idx = 0;
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while (TRUE) {
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FX_WCHAR ch = msg.GetAt(startpos + idx);
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switch (submode) {
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case SUBMODE_ALPHA:
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if (isAlphaUpper(ch)) {
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if (ch == ' ') {
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tmp += (FX_WCHAR)26;
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} else {
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tmp += (FX_WCHAR)(ch - 65);
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}
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} else {
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if (isAlphaLower(ch)) {
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submode = SUBMODE_LOWER;
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tmp += (FX_WCHAR)27;
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continue;
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} else if (isMixed(ch)) {
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submode = SUBMODE_MIXED;
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tmp += (FX_WCHAR)28;
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continue;
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} else {
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tmp += (FX_WCHAR)29;
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tmp += PUNCTUATION[ch];
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break;
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}
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}
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break;
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case SUBMODE_LOWER:
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if (isAlphaLower(ch)) {
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if (ch == ' ') {
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tmp += (FX_WCHAR)26;
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} else {
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tmp += (FX_WCHAR)(ch - 97);
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}
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} else {
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if (isAlphaUpper(ch)) {
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tmp += (FX_WCHAR)27;
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tmp += (FX_WCHAR)(ch - 65);
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break;
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} else if (isMixed(ch)) {
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submode = SUBMODE_MIXED;
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tmp += (FX_WCHAR)28;
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continue;
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} else {
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tmp += (FX_WCHAR)29;
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tmp += PUNCTUATION[ch];
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break;
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}
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}
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break;
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case SUBMODE_MIXED:
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if (isMixed(ch)) {
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tmp += MIXED[ch];
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} else {
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if (isAlphaUpper(ch)) {
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submode = SUBMODE_ALPHA;
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tmp += (FX_WCHAR)28;
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continue;
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} else if (isAlphaLower(ch)) {
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submode = SUBMODE_LOWER;
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tmp += (FX_WCHAR)27;
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continue;
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} else {
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if (startpos + idx + 1 < count) {
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FX_WCHAR next = msg.GetAt(startpos + idx + 1);
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if (isPunctuation(next)) {
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submode = SUBMODE_PUNCTUATION;
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tmp += (FX_WCHAR)25;
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continue;
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}
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}
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tmp += (FX_WCHAR)29;
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tmp += PUNCTUATION[ch];
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}
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}
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break;
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default:
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if (isPunctuation(ch)) {
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tmp += PUNCTUATION[ch];
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} else {
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submode = SUBMODE_ALPHA;
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tmp += (FX_WCHAR)29;
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continue;
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}
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}
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idx++;
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if (idx >= count) {
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break;
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}
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}
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FX_WCHAR h = 0;
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int32_t len = tmp.GetLength();
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for (int32_t i = 0; i < len; i++) {
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FX_BOOL odd = (i % 2) != 0;
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if (odd) {
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h = (FX_WCHAR)((h * 30) + tmp.GetAt(i));
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sb += h;
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} else {
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h = tmp.GetAt(i);
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}
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}
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if ((len % 2) != 0) {
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sb += (FX_WCHAR)((h * 30) + 29);
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}
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return submode;
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}
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void CBC_PDF417HighLevelEncoder::encodeBinary(CFX_ByteArray* bytes,
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int32_t startpos,
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int32_t count,
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int32_t startmode,
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CFX_WideString& sb) {
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if (count == 1 && startmode == TEXT_COMPACTION) {
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sb += (FX_WCHAR)SHIFT_TO_BYTE;
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}
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int32_t idx = startpos;
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int32_t i = 0;
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if (count >= 6) {
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sb += (FX_WCHAR)LATCH_TO_BYTE;
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FX_WCHAR chars[5];
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while ((startpos + count - idx) >= 6) {
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int64_t t = 0;
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for (i = 0; i < 6; i++) {
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t <<= 8;
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t += bytes->GetAt(idx + i) & 0xff;
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}
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for (i = 0; i < 5; i++) {
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chars[i] = (FX_WCHAR)(t % 900);
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t /= 900;
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}
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for (i = 4; i >= 0; i--) {
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sb += (chars[i]);
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}
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idx += 6;
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}
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}
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if (idx < startpos + count) {
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sb += (FX_WCHAR)LATCH_TO_BYTE_PADDED;
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}
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for (i = idx; i < startpos + count; i++) {
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int32_t ch = bytes->GetAt(i) & 0xff;
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sb += (FX_WCHAR)ch;
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}
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}
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void CBC_PDF417HighLevelEncoder::encodeNumeric(CFX_WideString msg,
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int32_t startpos,
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int32_t count,
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CFX_WideString& sb) {
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int32_t idx = 0;
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BigInteger num900 = 900;
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while (idx < count) {
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CFX_WideString tmp;
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int32_t len = 44 < count - idx ? 44 : count - idx;
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CFX_ByteString part =
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((FX_WCHAR)'1' + msg.Mid(startpos + idx, len)).UTF8Encode();
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BigInteger bigint = stringToBigInteger(part.c_str());
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do {
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int32_t c = (bigint % num900).toInt();
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tmp += (FX_WCHAR)(c);
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bigint = bigint / num900;
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} while (!bigint.isZero());
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for (int32_t i = tmp.GetLength() - 1; i >= 0; i--) {
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sb += tmp.GetAt(i);
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}
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idx += len;
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}
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isDigit(FX_WCHAR ch) {
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return ch >= '0' && ch <= '9';
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isAlphaUpper(FX_WCHAR ch) {
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return ch == ' ' || (ch >= 'A' && ch <= 'Z');
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isAlphaLower(FX_WCHAR ch) {
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return ch == ' ' || (ch >= 'a' && ch <= 'z');
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isMixed(FX_WCHAR ch) {
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return MIXED[ch] != -1;
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isPunctuation(FX_WCHAR ch) {
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return PUNCTUATION[ch] != -1;
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}
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FX_BOOL CBC_PDF417HighLevelEncoder::isText(FX_WCHAR ch) {
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return ch == '\t' || ch == '\n' || ch == '\r' || (ch >= 32 && ch <= 126);
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}
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int32_t CBC_PDF417HighLevelEncoder::determineConsecutiveDigitCount(
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CFX_WideString msg,
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int32_t startpos) {
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int32_t count = 0;
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int32_t len = msg.GetLength();
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int32_t idx = startpos;
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if (idx < len) {
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FX_WCHAR ch = msg.GetAt(idx);
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while (isDigit(ch) && idx < len) {
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count++;
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idx++;
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if (idx < len) {
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ch = msg.GetAt(idx);
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}
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}
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}
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return count;
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}
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int32_t CBC_PDF417HighLevelEncoder::determineConsecutiveTextCount(
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CFX_WideString msg,
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int32_t startpos) {
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int32_t len = msg.GetLength();
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int32_t idx = startpos;
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while (idx < len) {
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FX_WCHAR ch = msg.GetAt(idx);
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int32_t numericCount = 0;
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while (numericCount < 13 && isDigit(ch) && idx < len) {
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numericCount++;
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idx++;
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if (idx < len) {
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ch = msg.GetAt(idx);
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}
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}
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if (numericCount >= 13) {
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return idx - startpos - numericCount;
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}
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if (numericCount > 0) {
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continue;
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}
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ch = msg.GetAt(idx);
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if (!isText(ch)) {
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break;
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}
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idx++;
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}
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return idx - startpos;
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}
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int32_t CBC_PDF417HighLevelEncoder::determineConsecutiveBinaryCount(
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CFX_WideString msg,
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CFX_ByteArray* bytes,
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int32_t startpos,
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int32_t& e) {
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int32_t len = msg.GetLength();
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int32_t idx = startpos;
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while (idx < len) {
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FX_WCHAR ch = msg.GetAt(idx);
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int32_t numericCount = 0;
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while (numericCount < 13 && isDigit(ch)) {
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numericCount++;
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int32_t i = idx + numericCount;
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if (i >= len) {
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break;
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}
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ch = msg.GetAt(i);
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}
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if (numericCount >= 13) {
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return idx - startpos;
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}
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int32_t textCount = 0;
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while (textCount < 5 && isText(ch)) {
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textCount++;
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int32_t i = idx + textCount;
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if (i >= len) {
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break;
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}
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ch = msg.GetAt(i);
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}
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if (textCount >= 5) {
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return idx - startpos;
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}
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ch = msg.GetAt(idx);
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if (bytes->GetAt(idx) == 63 && ch != '?') {
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e = BCExceptionNonEncodableCharacterDetected;
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return -1;
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}
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idx++;
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}
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return idx - startpos;
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}
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