/*
|
* Copyright 2013 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.
|
*/
|
|
#import "ZXDataMatrixHighLevelEncoder.h"
|
#import "ZXDataMatrixTextEncoder.h"
|
|
@implementation ZXDataMatrixTextEncoder
|
|
- (int)encodingMode {
|
return [ZXDataMatrixHighLevelEncoder textEncodation];
|
}
|
|
- (int)encodeChar:(unichar)c buffer:(NSMutableString *)sb {
|
if (c == ' ') {
|
[sb appendString:@"\3"];
|
return 1;
|
}
|
if (c >= '0' && c <= '9') {
|
[sb appendFormat:@"%C", (unichar) (c - 48 + 4)];
|
return 1;
|
}
|
if (c >= 'a' && c <= 'z') {
|
[sb appendFormat:@"%C", (unichar) (c - 97 + 14)];
|
return 1;
|
}
|
if (c >= '\0' && c <= (unichar)0x001f) {
|
[sb appendString:@"\0"]; //Shift 1 Set
|
[sb appendFormat:@"%C", c];
|
return 2;
|
}
|
if (c >= '!' && c <= '/') {
|
[sb appendString:@"\1"]; //Shift 2 Set
|
[sb appendFormat:@"%C", (unichar) (c - 33)];
|
return 2;
|
}
|
if (c >= ':' && c <= '@') {
|
[sb appendString:@"\1"]; //Shift 2 Set
|
[sb appendFormat:@"%C", (unichar) (c - 58 + 15)];
|
return 2;
|
}
|
if (c >= '[' && c <= '_') {
|
[sb appendString:@"\1"]; //Shift 2 Set
|
[sb appendFormat:@"%C", (unichar) (c - 91 + 22)];
|
return 2;
|
}
|
if (c == '\u0060') {
|
[sb appendString:@"\2"]; //Shift 3 Set
|
[sb appendFormat:@"%C", (unichar) (c - 96)];
|
return 2;
|
}
|
if (c >= 'A' && c <= 'Z') {
|
[sb appendString:@"\2"]; //Shift 3 Set
|
[sb appendFormat:@"%C", (unichar) (c - 65 + 1)];
|
return 2;
|
}
|
if (c >= '{' && c <= (unichar)0x007f) {
|
[sb appendString:@"\2"]; //Shift 3 Set
|
[sb appendFormat:@"%C", (unichar) (c - 123 + 27)];
|
return 2;
|
}
|
if (c >= (unichar)0x0080) {
|
[sb appendFormat:@"\1%C", (unichar)0x001e]; //Shift 2, Upper Shift
|
int len = 2;
|
len += [self encodeChar:(unichar) (c - 128) buffer:sb];
|
return len;
|
}
|
[ZXDataMatrixHighLevelEncoder illegalCharacter:c];
|
return -1;
|
}
|
|
@end
|
