// 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 2006 Jeremias Maerki in part, and ZXing Authors in part
*
* 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_UtilCodingConvert.h"
#include "../../../../third_party/bigint/BigIntegerLibrary.hh"
#include "BC_PDF417Compaction.h"
#include "BC_PDF417HighLevelEncoder.h"
#define SUBMODE_ALPHA 0
#define SUBMODE_LOWER 1
#define SUBMODE_MIXED 2
FX_INT32 CBC_PDF417HighLevelEncoder::TEXT_COMPACTION = 0;
FX_INT32 CBC_PDF417HighLevelEncoder::BYTE_COMPACTION = 1;
FX_INT32 CBC_PDF417HighLevelEncoder::NUMERIC_COMPACTION = 2;
FX_INT32 CBC_PDF417HighLevelEncoder::SUBMODE_PUNCTUATION = 3;
FX_INT32 CBC_PDF417HighLevelEncoder::LATCH_TO_TEXT = 900;
FX_INT32 CBC_PDF417HighLevelEncoder::LATCH_TO_BYTE_PADDED = 901;
FX_INT32 CBC_PDF417HighLevelEncoder::LATCH_TO_NUMERIC = 902;
FX_INT32 CBC_PDF417HighLevelEncoder::SHIFT_TO_BYTE = 913;
FX_INT32 CBC_PDF417HighLevelEncoder::LATCH_TO_BYTE = 924;
FX_BYTE CBC_PDF417HighLevelEncoder::TEXT_MIXED_RAW[] = {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 38, 13, 9, 44, 58,
35, 45, 46, 36, 47, 43, 37, 42, 61, 94, 0, 32, 0, 0, 0
};
FX_BYTE CBC_PDF417HighLevelEncoder::TEXT_PUNCTUATION_RAW[] = {59, 60, 62, 64, 91, 92, 93, 95, 96, 126, 33, 13, 9, 44, 58,
10, 45, 46, 36, 47, 34, 124, 42, 40, 41, 63, 123, 125, 39, 0
};
FX_INT32 CBC_PDF417HighLevelEncoder::MIXED[128] = {0};
FX_INT32 CBC_PDF417HighLevelEncoder::PUNCTUATION[128] = {0};
void CBC_PDF417HighLevelEncoder::Initialize()
{
Inverse();
}
void CBC_PDF417HighLevelEncoder::Finalize()
{
}
CFX_WideString CBC_PDF417HighLevelEncoder::encodeHighLevel(CFX_WideString wideMsg, Compaction compaction, FX_INT32 &e)
{
CFX_ByteString bytes;
CBC_UtilCodingConvert::UnicodeToUTF8(wideMsg, bytes);
CFX_WideString msg;
FX_INT32 len = bytes.GetLength();
for (FX_INT32 i = 0; i < len; i++) {
FX_WCHAR ch = (FX_WCHAR)(bytes.GetAt(i) & 0xff);
if (ch == '?' && bytes.GetAt(i) != '?') {
e = BCExceptionCharactersOutsideISO88591Encoding;
return (FX_LPWSTR)"";
}
msg += ch;
}
CFX_ByteArray byteArr;
for (FX_INT32 k = 0; k < bytes.GetLength(); k++) {
byteArr.Add(bytes.GetAt(k));
}
CFX_WideString sb;
len = msg.GetLength();
FX_INT32 p = 0;
FX_INT32 textSubMode = SUBMODE_ALPHA;
if (compaction == TEXT) {
encodeText(msg, p, len, sb, textSubMode);
} else if (compaction == BYTES) {
encodeBinary(&byteArr, p, byteArr.GetSize(), BYTE_COMPACTION, sb);
} else if (compaction == NUMERIC) {
sb += (FX_WCHAR) LATCH_TO_NUMERIC;
encodeNumeric(msg, p, len, sb);
} else {
FX_INT32 encodingMode = LATCH_TO_TEXT;
while (p < len) {
FX_INT32 n = determineConsecutiveDigitCount(msg, p);
if (n >= 13) {
sb += (FX_WCHAR) LATCH_TO_NUMERIC;
encodingMode = NUMERIC_COMPACTION;
textSubMode = SUBMODE_ALPHA;
encodeNumeric(msg, p, n, sb);
p += n;
} else {
FX_INT32 t = determineConsecutiveTextCount(msg, p);
if (t >= 5 || n == len) {
if (encodingMode != TEXT_COMPACTION) {
sb += (FX_WCHAR) LATCH_TO_TEXT;
encodingMode = TEXT_COMPACTION;
textSubMode = SUBMODE_ALPHA;
}
textSubMode = encodeText(msg, p, t, sb, textSubMode);
p += t;
} else {
FX_INT32 b = determineConsecutiveBinaryCount(msg, &byteArr, p, e);
BC_EXCEPTION_CHECK_ReturnValue(e, (FX_WCHAR)' ');
if (b == 0) {
b = 1;
}
if (b == 1 && encodingMode == TEXT_COMPACTION) {
encodeBinary(&byteArr, p, 1, TEXT_COMPACTION, sb);
} else {
encodeBinary(&byteArr, p, b, encodingMode, sb);
encodingMode = BYTE_COMPACTION;
textSubMode = SUBMODE_ALPHA;
}
p += b;
}
}
}
}
return sb;
}
void CBC_PDF417HighLevelEncoder::Inverse()
{
FX_BYTE i = 0;
FX_INT32 l = 0;
for (l = 0; l < sizeof(MIXED) / sizeof(MIXED[0]); l++) {
MIXED[l] = -1;
}
for (i = 0; i < sizeof(TEXT_MIXED_RAW) / sizeof(TEXT_MIXED_RAW[0]); i++) {
FX_BYTE b = TEXT_MIXED_RAW[i];
if (b > 0) {
MIXED[b] = i;
}
}
for (l = 0; l < sizeof(PUNCTUATION) / sizeof(PUNCTUATION[0]); l++) {
PUNCTUATION[l] = -1;
}
for (i = 0; i < sizeof(TEXT_PUNCTUATION_RAW) / sizeof(TEXT_PUNCTUATION_RAW[0]); i++) {
FX_BYTE b = TEXT_PUNCTUATION_RAW[i];
if (b > 0) {
PUNCTUATION[b] = i;
}
}
}
FX_INT32 CBC_PDF417HighLevelEncoder::encodeText(CFX_WideString msg, FX_INT32 startpos, FX_INT32 count, CFX_WideString &sb, FX_INT32 initialSubmode)
{
CFX_WideString tmp;
FX_INT32 submode = initialSubmode;
FX_INT32 idx = 0;
while (TRUE) {
FX_WCHAR ch = msg.GetAt(startpos + idx);
switch (submode) {
case SUBMODE_ALPHA:
if (isAlphaUpper(ch)) {
if (ch == ' ') {
tmp += (FX_WCHAR) 26;
} else {
tmp += (FX_WCHAR) (ch - 65);
}
} else {
if (isAlphaLower(ch)) {
submode = SUBMODE_LOWER;
tmp += (FX_WCHAR) 27;
continue;
} else if (isMixed(ch)) {
submode = SUBMODE_MIXED;
tmp += (FX_WCHAR) 28;
continue;
} else {
tmp += (FX_WCHAR) 29;
tmp += PUNCTUATION[ch];
break;
}
}
break;
case SUBMODE_LOWER:
if (isAlphaLower(ch)) {
if (ch == ' ') {
tmp += (FX_WCHAR) 26;
} else {
tmp += (FX_WCHAR) (ch - 97);
}
} else {
if (isAlphaUpper(ch)) {
tmp += (FX_WCHAR) 27;
tmp += (FX_WCHAR) (ch - 65);
break;
} else if (isMixed(ch)) {
submode = SUBMODE_MIXED;
tmp += (FX_WCHAR) 28;
continue;
} else {
tmp += (FX_WCHAR) 29;
tmp += PUNCTUATION[ch];
break;
}
}
break;
case SUBMODE_MIXED:
if (isMixed(ch)) {
FX_WCHAR a = MIXED[ch];
FX_INT32 b = (FX_INT32)a;
tmp += MIXED[ch];
} else {
if (isAlphaUpper(ch)) {
submode = SUBMODE_ALPHA;
tmp += (FX_WCHAR) 28;
continue;
} else if (isAlphaLower(ch)) {
submode = SUBMODE_LOWER;
tmp += (FX_WCHAR) 27;
continue;
} else {
if (startpos + idx + 1 < count) {
FX_WCHAR next = msg.GetAt(startpos + idx + 1);
if (isPunctuation(next)) {
submode = SUBMODE_PUNCTUATION;
tmp += (FX_WCHAR) 25;
continue;
}
}
tmp += (FX_WCHAR) 29;
tmp += PUNCTUATION[ch];
}
}
break;
default:
if (isPunctuation(ch)) {
tmp += PUNCTUATION[ch];
} else {
submode = SUBMODE_ALPHA;
tmp += (FX_WCHAR) 29;
continue;
}
}
idx++;
if (idx >= count) {
break;
}
}
FX_WCHAR h = 0;
FX_INT32 len = tmp.GetLength();
for (FX_INT32 i = 0; i < len; i++) {
FX_BOOL odd = (i % 2) != 0;
if (odd) {
h = (FX_WCHAR) ((h * 30) + tmp.GetAt(i));
sb += h;
} else {
h = tmp.GetAt(i);
}
}
if ((len % 2) != 0) {
sb += (FX_WCHAR) ((h * 30) + 29);
}
return submode;
}
void CBC_PDF417HighLevelEncoder::encodeBinary(CFX_ByteArray* bytes, FX_INT32 startpos, FX_INT32 count, FX_INT32 startmode, CFX_WideString &sb)
{
if (count == 1 && startmode == TEXT_COMPACTION) {
sb += (FX_WCHAR) SHIFT_TO_BYTE;
}
FX_INT32 idx = startpos;
FX_INT32 i = 0;
if (count >= 6) {
sb += (FX_WCHAR) LATCH_TO_BYTE;
FX_WCHAR chars[5];
while ((startpos + count - idx) >= 6) {
FX_INT64 t = 0;
for (i = 0; i < 6; i++) {
t <<= 8;
t += bytes->GetAt(idx + i) & 0xff;
}
for (i = 0; i < 5; i++) {
chars[i] = (FX_WCHAR) (t % 900);
t /= 900;
}
for (i = 4; i >= 0; i--) {
sb += (chars[i]);
}
idx += 6;
}
}
if (idx < startpos + count) {
sb += (FX_WCHAR) LATCH_TO_BYTE_PADDED;
}
for (i = idx; i < startpos + count; i++) {
FX_INT32 ch = bytes->GetAt(i) & 0xff;
sb += (FX_WCHAR) ch;
}
}
void CBC_PDF417HighLevelEncoder::encodeNumeric(CFX_WideString msg, FX_INT32 startpos, FX_INT32 count, CFX_WideString &sb)
{
FX_INT32 idx = 0;
BigInteger num900 = 900;
while (idx < count) {
CFX_WideString tmp;
FX_INT32 len = 44 < count - idx ? 44 : count - idx;
CFX_ByteString part = ((FX_WCHAR)'1' + msg.Mid(startpos + idx, len)).UTF8Encode();
BigInteger bigint = stringToBigInteger(part.c_str());
do {
FX_INT32 c = (bigint % num900).toInt();
tmp += (FX_WCHAR)(c);
bigint = bigint / num900;
} while (!bigint.isZero());
for (FX_INT32 i = tmp.GetLength() - 1; i >= 0; i--) {
sb += tmp.GetAt(i);
}
idx += len;
}
}
FX_BOOL CBC_PDF417HighLevelEncoder::isDigit(FX_WCHAR ch)
{
return ch >= '0' && ch <= '9';
}
FX_BOOL CBC_PDF417HighLevelEncoder::isAlphaUpper(FX_WCHAR ch)
{
return ch == ' ' || (ch >= 'A' && ch <= 'Z');
}
FX_BOOL CBC_PDF417HighLevelEncoder::isAlphaLower(FX_WCHAR ch)
{
return ch == ' ' || (ch >= 'a' && ch <= 'z');
}
FX_BOOL CBC_PDF417HighLevelEncoder::isMixed(FX_WCHAR ch)
{
return MIXED[ch] != -1;
}
FX_BOOL CBC_PDF417HighLevelEncoder::isPunctuation(FX_WCHAR ch)
{
return PUNCTUATION[ch] != -1;
}
FX_BOOL CBC_PDF417HighLevelEncoder::isText(FX_WCHAR ch)
{
return ch == '\t' || ch == '\n' || ch == '\r' || (ch >= 32 && ch <= 126);
}
FX_INT32 CBC_PDF417HighLevelEncoder::determineConsecutiveDigitCount(CFX_WideString msg, FX_INT32 startpos)
{
FX_INT32 count = 0;
FX_INT32 len = msg.GetLength();
FX_INT32 idx = startpos;
if (idx < len) {
FX_WCHAR ch = msg.GetAt(idx);
while (isDigit(ch) && idx < len) {
count++;
idx++;
if (idx < len) {
ch = msg.GetAt(idx);
}
}
}
return count;
}
FX_INT32 CBC_PDF417HighLevelEncoder::determineConsecutiveTextCount(CFX_WideString msg, FX_INT32 startpos)
{
FX_INT32 len = msg.GetLength();
FX_INT32 idx = startpos;
while (idx < len) {
FX_WCHAR ch = msg.GetAt(idx);
FX_INT32 numericCount = 0;
while (numericCount < 13 && isDigit(ch) && idx < len) {
numericCount++;
idx++;
if (idx < len) {
ch = msg.GetAt(idx);
}
}
if (numericCount >= 13) {
return idx - startpos - numericCount;
}
if (numericCount > 0) {
continue;
}
ch = msg.GetAt(idx);
if (!isText(ch)) {
break;
}
idx++;
}
return idx - startpos;
}
FX_INT32 CBC_PDF417HighLevelEncoder::determineConsecutiveBinaryCount(CFX_WideString msg, CFX_ByteArray* bytes, FX_INT32 startpos, FX_INT32 &e)
{
FX_INT32 len = msg.GetLength();
FX_INT32 idx = startpos;
while (idx < len) {
FX_WCHAR ch = msg.GetAt(idx);
FX_INT32 numericCount = 0;
while (numericCount < 13 && isDigit(ch)) {
numericCount++;
FX_INT32 i = idx + numericCount;
if (i >= len) {
break;
}
ch = msg.GetAt(i);
}
if (numericCount >= 13) {
return idx - startpos;
}
FX_INT32 textCount = 0;
while (textCount < 5 && isText(ch)) {
textCount++;
FX_INT32 i = idx + textCount;
if (i >= len) {
break;
}
ch = msg.GetAt(i);
}
if (textCount >= 5) {
return idx - startpos;
}
ch = msg.GetAt(idx);
if (bytes->GetAt(idx) == 63 && ch != '?') {
e = BCExceptionNonEncodableCharacterDetected;
return -1;
}
idx++;
}
return idx - startpos;
}