1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 // Original code is licensed as follows:
7 /*
8 * Copyright 2006-2007 Jeremias Maerki.
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22
23 #include "fxbarcode/datamatrix/BC_X12Encoder.h"
24
25 #include "fxbarcode/common/BC_CommonBitMatrix.h"
26 #include "fxbarcode/datamatrix/BC_C40Encoder.h"
27 #include "fxbarcode/datamatrix/BC_Encoder.h"
28 #include "fxbarcode/datamatrix/BC_EncoderContext.h"
29 #include "fxbarcode/datamatrix/BC_HighLevelEncoder.h"
30 #include "fxbarcode/datamatrix/BC_SymbolInfo.h"
31 #include "fxbarcode/utils.h"
32
CBC_X12Encoder()33 CBC_X12Encoder::CBC_X12Encoder() {}
~CBC_X12Encoder()34 CBC_X12Encoder::~CBC_X12Encoder() {}
getEncodingMode()35 int32_t CBC_X12Encoder::getEncodingMode() {
36 return X12_ENCODATION;
37 }
Encode(CBC_EncoderContext & context,int32_t & e)38 void CBC_X12Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
39 WideString buffer;
40 while (context.hasMoreCharacters()) {
41 wchar_t c = context.getCurrentChar();
42 context.m_pos++;
43 encodeChar(c, buffer, e);
44 if (e != BCExceptionNO) {
45 return;
46 }
47 int32_t count = buffer.GetLength();
48 if ((count % 3) == 0) {
49 writeNextTriplet(context, buffer);
50 int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
51 context.m_msg, context.m_pos, getEncodingMode());
52 if (newMode != getEncodingMode()) {
53 context.signalEncoderChange(newMode);
54 break;
55 }
56 }
57 }
58 handleEOD(context, buffer, e);
59 }
handleEOD(CBC_EncoderContext & context,WideString & buffer,int32_t & e)60 void CBC_X12Encoder::handleEOD(CBC_EncoderContext& context,
61 WideString& buffer,
62 int32_t& e) {
63 context.updateSymbolInfo(e);
64 if (e != BCExceptionNO) {
65 return;
66 }
67 int32_t available =
68 context.m_symbolInfo->dataCapacity() - context.getCodewordCount();
69 int32_t count = buffer.GetLength();
70 if (count == 2) {
71 context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
72 context.m_pos -= 2;
73 context.signalEncoderChange(ASCII_ENCODATION);
74 } else if (count == 1) {
75 context.m_pos--;
76 if (available > 1) {
77 context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
78 }
79 context.signalEncoderChange(ASCII_ENCODATION);
80 }
81 }
encodeChar(wchar_t c,WideString & sb,int32_t & e)82 int32_t CBC_X12Encoder::encodeChar(wchar_t c, WideString& sb, int32_t& e) {
83 if (c == '\r') {
84 sb += (wchar_t)'\0';
85 } else if (c == '*') {
86 sb += (wchar_t)'\1';
87 } else if (c == '>') {
88 sb += (wchar_t)'\2';
89 } else if (c == ' ') {
90 sb += (wchar_t)'\3';
91 } else if (c >= '0' && c <= '9') {
92 sb += (wchar_t)(c - 48 + 4);
93 } else if (c >= 'A' && c <= 'Z') {
94 sb += (wchar_t)(c - 65 + 14);
95 } else {
96 e = BCExceptionIllegalArgument;
97 return -1;
98 }
99 return 1;
100 }
101