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-
- #import "ZXBarcodeFormat.h"
- #import "ZXBoolArray.h"
- #import "ZXEAN8Writer.h"
- #import "ZXUPCEANReader.h"
-
- const int ZX_EAN8_CODE_WIDTH = 3 + (7 * 4) + 5 + (7 * 4) + 3;
-
- @implementation ZXEAN8Writer
-
- - (ZXBitMatrix *)encode:(NSString *)contents format:(ZXBarcodeFormat)format width:(int)width height:(int)height hints:(ZXEncodeHints *)hints error:(NSError **)error {
- if (format != kBarcodeFormatEan8) {
- [NSException raise:NSInvalidArgumentException format:@"Can only encode EAN_8"];
- }
- return [super encode:contents format:format width:width height:height hints:hints error:error];
- }
-
-
- - (ZXBoolArray *)encode:(NSString *)contents {
- if ([contents length] != 8) {
- [NSException raise:NSInvalidArgumentException format:@"Requested contents should be 8 digits long, but got %d", (int)[contents length]];
- }
-
- ZXBoolArray *result = [[ZXBoolArray alloc] initWithLength:ZX_EAN8_CODE_WIDTH];
- int pos = 0;
-
- pos += [self appendPattern:result pos:pos pattern:ZX_UPC_EAN_START_END_PATTERN patternLen:ZX_UPC_EAN_START_END_PATTERN_LEN startColor:YES];
-
- for (int i = 0; i <= 3; i++) {
- int digit = [[contents substringWithRange:NSMakeRange(i, 1)] intValue];
- pos += [self appendPattern:result pos:pos pattern:ZX_UPC_EAN_L_PATTERNS[digit] patternLen:ZX_UPC_EAN_L_PATTERNS_SUB_LEN startColor:FALSE];
- }
-
- pos += [self appendPattern:result pos:pos pattern:ZX_UPC_EAN_MIDDLE_PATTERN patternLen:ZX_UPC_EAN_MIDDLE_PATTERN_LEN startColor:FALSE];
-
- for (int i = 4; i <= 7; i++) {
- int digit = [[contents substringWithRange:NSMakeRange(i, 1)] intValue];
- pos += [super appendPattern:result pos:pos pattern:ZX_UPC_EAN_L_PATTERNS[digit] patternLen:ZX_UPC_EAN_L_PATTERNS_SUB_LEN startColor:YES];
- }
-
- [self appendPattern:result pos:pos pattern:ZX_UPC_EAN_START_END_PATTERN patternLen:ZX_UPC_EAN_START_END_PATTERN_LEN startColor:YES];
-
- return result;
- }
-
- @end
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