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ean 8 integration passes

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This commit is contained in:
Henry Schimke
2022-12-09 18:15:52 -06:00
parent 0cd27d1ae3
commit 81f2298dd0
14 changed files with 1059 additions and 780 deletions
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4
src/common/bit_array.rs
View File

@@ -137,7 +137,7 @@ impl BitArray {
return self.size;
}
let mut bitsOffset = from / 32;
let mut currentBits = !self.bits[bitsOffset] as i32;
let mut currentBits = !self.bits[bitsOffset] as i64;
// mask off lesser bits first
currentBits &= -(1 << (from & 0x1F));
while currentBits == 0 {
@@ -145,7 +145,7 @@ impl BitArray {
if bitsOffset == self.bits.len() {
return self.size;
}
currentBits = !self.bits[bitsOffset] as i32;
currentBits = !self.bits[bitsOffset] as i64;
}
let result = (bitsOffset * 32) + currentBits.trailing_zeros() as usize;
return cmp::min(result, self.size);

75
src/oned/EAN8Reader.java
View File

@@ -1,75 +0,0 @@
/*
* Copyright 2008 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.
*/
package com.google.zxing.oned;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.NotFoundException;
import com.google.zxing.common.BitArray;
/**
* <p>Implements decoding of the EAN-8 format.</p>
*
* @author Sean Owen
*/
public final class EAN8Reader extends UPCEANReader {
private final int[] decodeMiddleCounters;
public EAN8Reader() {
decodeMiddleCounters = new int[4];
}
@Override
protected int decodeMiddle(BitArray row,
int[] startRange,
StringBuilder result) throws NotFoundException {
int[] counters = decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
int end = row.getSize();
int rowOffset = startRange[1];
for (int x = 0; x < 4 && rowOffset < end; x++) {
int bestMatch = decodeDigit(row, counters, rowOffset, L_PATTERNS);
result.append((char) ('0' + bestMatch));
for (int counter : counters) {
rowOffset += counter;
}
}
int[] middleRange = findGuardPattern(row, rowOffset, true, MIDDLE_PATTERN);
rowOffset = middleRange[1];
for (int x = 0; x < 4 && rowOffset < end; x++) {
int bestMatch = decodeDigit(row, counters, rowOffset, L_PATTERNS);
result.append((char) ('0' + bestMatch));
for (int counter : counters) {
rowOffset += counter;
}
}
return rowOffset;
}
@Override
BarcodeFormat getBarcodeFormat() {
return BarcodeFormat.EAN_8;
}
}

112
src/oned/UPCEANExtension2Support.java
View File

@@ -1,112 +0,0 @@
/*
* Copyright (C) 2012 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.
*/
package com.google.zxing.oned;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.NotFoundException;
import com.google.zxing.RXingResult;
import com.google.zxing.RXingResultMetadataType;
import com.google.zxing.RXingResultPoint;
import com.google.zxing.common.BitArray;
import java.util.EnumMap;
import java.util.Map;
/**
* @see UPCEANExtension5Support
*/
final class UPCEANExtension2Support {
private final int[] decodeMiddleCounters = new int[4];
private final StringBuilder decodeRowStringBuffer = new StringBuilder();
RXingResult decodeRow(int rowNumber, BitArray row, int[] extensionStartRange) throws NotFoundException {
StringBuilder result = decodeRowStringBuffer;
result.setLength(0);
int end = decodeMiddle(row, extensionStartRange, result);
String resultString = result.toString();
Map<RXingResultMetadataType,Object> extensionData = parseExtensionString(resultString);
RXingResult extensionRXingResult =
new RXingResult(resultString,
null,
new RXingResultPoint[] {
new RXingResultPoint((extensionStartRange[0] + extensionStartRange[1]) / 2.0f, rowNumber),
new RXingResultPoint(end, rowNumber),
},
BarcodeFormat.UPC_EAN_EXTENSION);
if (extensionData != null) {
extensionRXingResult.putAllMetadata(extensionData);
}
return extensionRXingResult;
}
private int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString) throws NotFoundException {
int[] counters = decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
int end = row.getSize();
int rowOffset = startRange[1];
int checkParity = 0;
for (int x = 0; x < 2 && rowOffset < end; x++) {
int bestMatch = UPCEANReader.decodeDigit(row, counters, rowOffset, UPCEANReader.L_AND_G_PATTERNS);
resultString.append((char) ('0' + bestMatch % 10));
for (int counter : counters) {
rowOffset += counter;
}
if (bestMatch >= 10) {
checkParity |= 1 << (1 - x);
}
if (x != 1) {
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
}
if (resultString.length() != 2) {
throw NotFoundException.getNotFoundInstance();
}
if (Integer.parseInt(resultString.toString()) % 4 != checkParity) {
throw NotFoundException.getNotFoundInstance();
}
return rowOffset;
}
/**
* @param raw raw content of extension
* @return formatted interpretation of raw content as a {@link Map} mapping
* one {@link RXingResultMetadataType} to appropriate value, or {@code null} if not known
*/
private static Map<RXingResultMetadataType,Object> parseExtensionString(String raw) {
if (raw.length() != 2) {
return null;
}
Map<RXingResultMetadataType,Object> result = new EnumMap<>(RXingResultMetadataType.class);
result.put(RXingResultMetadataType.ISSUE_NUMBER, Integer.valueOf(raw));
return result;
}
}

180
src/oned/UPCEANExtension5Support.java
View File

@@ -1,180 +0,0 @@
/*
* Copyright (C) 2010 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.
*/
package com.google.zxing.oned;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.NotFoundException;
import com.google.zxing.RXingResult;
import com.google.zxing.RXingResultMetadataType;
import com.google.zxing.RXingResultPoint;
import com.google.zxing.common.BitArray;
import java.util.EnumMap;
import java.util.Map;
/**
* @see UPCEANExtension2Support
*/
final class UPCEANExtension5Support {
private static final int[] CHECK_DIGIT_ENCODINGS = {
0x18, 0x14, 0x12, 0x11, 0x0C, 0x06, 0x03, 0x0A, 0x09, 0x05
};
private final int[] decodeMiddleCounters = new int[4];
private final StringBuilder decodeRowStringBuffer = new StringBuilder();
RXingResult decodeRow(int rowNumber, BitArray row, int[] extensionStartRange) throws NotFoundException {
StringBuilder result = decodeRowStringBuffer;
result.setLength(0);
int end = decodeMiddle(row, extensionStartRange, result);
String resultString = result.toString();
Map<RXingResultMetadataType,Object> extensionData = parseExtensionString(resultString);
RXingResult extensionRXingResult =
new RXingResult(resultString,
null,
new RXingResultPoint[] {
new RXingResultPoint((extensionStartRange[0] + extensionStartRange[1]) / 2.0f, rowNumber),
new RXingResultPoint(end, rowNumber),
},
BarcodeFormat.UPC_EAN_EXTENSION);
if (extensionData != null) {
extensionRXingResult.putAllMetadata(extensionData);
}
return extensionRXingResult;
}
private int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString) throws NotFoundException {
int[] counters = decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
int end = row.getSize();
int rowOffset = startRange[1];
int lgPatternFound = 0;
for (int x = 0; x < 5 && rowOffset < end; x++) {
int bestMatch = UPCEANReader.decodeDigit(row, counters, rowOffset, UPCEANReader.L_AND_G_PATTERNS);
resultString.append((char) ('0' + bestMatch % 10));
for (int counter : counters) {
rowOffset += counter;
}
if (bestMatch >= 10) {
lgPatternFound |= 1 << (4 - x);
}
if (x != 4) {
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
}
if (resultString.length() != 5) {
throw NotFoundException.getNotFoundInstance();
}
int checkDigit = determineCheckDigit(lgPatternFound);
if (extensionChecksum(resultString.toString()) != checkDigit) {
throw NotFoundException.getNotFoundInstance();
}
return rowOffset;
}
private static int extensionChecksum(CharSequence s) {
int length = s.length();
int sum = 0;
for (int i = length - 2; i >= 0; i -= 2) {
sum += s.charAt(i) - '0';
}
sum *= 3;
for (int i = length - 1; i >= 0; i -= 2) {
sum += s.charAt(i) - '0';
}
sum *= 3;
return sum % 10;
}
private static int determineCheckDigit(int lgPatternFound)
throws NotFoundException {
for (int d = 0; d < 10; d++) {
if (lgPatternFound == CHECK_DIGIT_ENCODINGS[d]) {
return d;
}
}
throw NotFoundException.getNotFoundInstance();
}
/**
* @param raw raw content of extension
* @return formatted interpretation of raw content as a {@link Map} mapping
* one {@link RXingResultMetadataType} to appropriate value, or {@code null} if not known
*/
private static Map<RXingResultMetadataType,Object> parseExtensionString(String raw) {
if (raw.length() != 5) {
return null;
}
Object value = parseExtension5String(raw);
if (value == null) {
return null;
}
Map<RXingResultMetadataType,Object> result = new EnumMap<>(RXingResultMetadataType.class);
result.put(RXingResultMetadataType.SUGGESTED_PRICE, value);
return result;
}
private static String parseExtension5String(String raw) {
String currency;
switch (raw.charAt(0)) {
case '0':
currency = "£";
break;
case '5':
currency = "$";
break;
case '9':
// Reference: http://www.jollytech.com
switch (raw) {
case "90000":
// No suggested retail price
return null;
case "99991":
// Complementary
return "0.00";
case "99990":
return "Used";
}
// Otherwise... unknown currency?
currency = "";
break;
default:
currency = "";
break;
}
int rawAmount = Integer.parseInt(raw.substring(1));
String unitsString = String.valueOf(rawAmount / 100);
int hundredths = rawAmount % 100;
String hundredthsString = hundredths < 10 ? "0" + hundredths : String.valueOf(hundredths);
return currency + unitsString + '.' + hundredthsString;
}
}

40
src/oned/UPCEANExtensionSupport.java
View File

@@ -1,40 +0,0 @@
/*
* Copyright (C) 2010 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.
*/
package com.google.zxing.oned;
import com.google.zxing.NotFoundException;
import com.google.zxing.ReaderException;
import com.google.zxing.RXingResult;
import com.google.zxing.common.BitArray;
final class UPCEANExtensionSupport {
private static final int[] EXTENSION_START_PATTERN = {1,1,2};
private final UPCEANExtension2Support twoSupport = new UPCEANExtension2Support();
private final UPCEANExtension5Support fiveSupport = new UPCEANExtension5Support();
RXingResult decodeRow(int rowNumber, BitArray row, int rowOffset) throws NotFoundException {
int[] extensionStartRange = UPCEANReader.findGuardPattern(row, rowOffset, false, EXTENSION_START_PATTERN);
try {
return fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
} catch (ReaderException ignored) {
return twoSupport.decodeRow(rowNumber, row, extensionStartRange);
}
}
}

85
src/oned/ean_8_reader.rs Normal file
View File

@@ -0,0 +1,85 @@
/*
* Copyright 2008 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.
*/
use super::OneDReader;
use crate::{BarcodeFormat, Exceptions};
use one_d_reader_derive::{EANReader, OneDReader};
use super::upc_ean_reader;
use super::UPCEANReader;
/**
* <p>Implements decoding of the EAN-8 format.</p>
*
* @author Sean Owen
*/
#[derive(OneDReader, EANReader)]
pub struct EAN8Reader;
impl UPCEANReader for EAN8Reader {
fn getBarcodeFormat(&self) -> crate::BarcodeFormat {
BarcodeFormat::EAN_8
}
fn decodeMiddle(
&self,
row: &crate::common::BitArray,
startRange: &[usize; 2],
resultString: &mut String,
) -> Result<usize, Exceptions> {
let mut counters = [0_u32; 4]; //decodeMiddleCounters;
// counters[0] = 0;
// counters[1] = 0;
// counters[2] = 0;
// counters[3] = 0;
let end = row.getSize();
let mut rowOffset = startRange[1];
let mut x = 0;
while x < 4 && rowOffset < end {
// for (int x = 0; x < 4 && rowOffset < end; x++) {
let bestMatch =
Self::decodeDigit(row, &mut counters, rowOffset, &upc_ean_reader::L_PATTERNS)?;
resultString.push(char::from_u32('0' as u32 + bestMatch as u32).unwrap());
// for (int counter : counters) {
// rowOffset += counter;
// }
rowOffset += counters.iter().sum::<u32>() as usize;
x += 1;
}
let middleRange =
Self::findGuardPattern(row, rowOffset, true, &upc_ean_reader::MIDDLE_PATTERN)?;
rowOffset = middleRange[1];
let mut x = 0;
while x < 4 && rowOffset < end {
// for (int x = 0; x < 4 && rowOffset < end; x++) {
let bestMatch =
Self::decodeDigit(row, &mut counters, rowOffset, &upc_ean_reader::L_PATTERNS)?;
resultString.push(char::from_u32('0' as u32 + bestMatch as u32).unwrap());
// for (int counter : counters) {
// rowOffset += counter;
// }
rowOffset += counters.iter().sum::<u32>() as usize;
x += 1;
}
Ok(rowOffset)
}
}

11
src/oned/ean_manufacturer_org_support.rs
View File

@@ -30,16 +30,17 @@ pub struct EANManufacturerOrgSupport {
impl Default for EANManufacturerOrgSupport {
fn default() -> Self {
Self {
let mut slf = Self {
ranges: Default::default(),
countryIdentifiers: Default::default(),
}
};
slf.initIfNeeded();
slf
}
}
impl EANManufacturerOrgSupport {
pub fn lookupCountryIdentifier(&mut self, productCode: &str) -> Option<String> {
self.initIfNeeded();
pub fn lookupCountryIdentifier(&self, productCode: &str) -> Option<String> {
let prefix = productCode[0..3].parse::<u32>().expect("must parse prefix");
// let prefix = Integer.parseInt(productCode.substring(0, 3));
let max = self.ranges.len();
@@ -193,7 +194,7 @@ mod EANManufacturerOrgSupportTest {
#[test]
fn testLookup() {
let mut support = EANManufacturerOrgSupport::default();
let support = EANManufacturerOrgSupport::default();
assert!(support.lookupCountryIdentifier("472000").is_none());
assert_eq!(
"US/CA",

13
src/oned/mod.rs
View File

@@ -25,4 +25,15 @@ mod itf_reader;
pub use itf_reader::*;
mod upc_ean_reader;
pub use upc_ean_reader::*;
pub use upc_ean_reader::*;
mod upc_ean_extension_2_support;
mod upc_ean_extension_5_support;
mod upc_ean_extension_support;
pub use upc_ean_extension_2_support::*;
pub use upc_ean_extension_5_support::*;
pub use upc_ean_extension_support::*;
mod ean_8_reader;
pub use ean_8_reader::*;

148
src/oned/upc_ean_extension_2_support.rs Normal file
View File

@@ -0,0 +1,148 @@
/*
* Copyright (C) 2012 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.
*/
use std::collections::HashMap;
use crate::{
common::BitArray, BarcodeFormat, Exceptions, RXingResult, RXingResultMetadataType,
RXingResultMetadataValue, RXingResultPoint,
};
use super::{upc_ean_reader, StandIn, UPCEANReader};
/**
* @see UPCEANExtension5Support
*/
pub struct UPCEANExtension2Support {
decodeMiddleCounters: [u32; 4],
}
impl Default for UPCEANExtension2Support {
fn default() -> Self {
Self {
decodeMiddleCounters: Default::default(),
}
}
}
impl UPCEANExtension2Support {
pub fn decodeRow(
&self,
rowNumber: u32,
row: &BitArray,
extensionStartRange: &[u32; 3],
) -> Result<RXingResult, Exceptions> {
let mut result = String::new();
let end = self.decodeMiddle(row, extensionStartRange, &mut result)?;
let resultString = result;
let extensionData = Self::parseExtensionString(&resultString);
let mut extensionRXingResult = RXingResult::new(
&resultString,
Vec::new(),
vec![
RXingResultPoint::new(
(extensionStartRange[0] + extensionStartRange[1]) as f32 / 2.0,
rowNumber as f32,
),
RXingResultPoint::new(end as f32, rowNumber as f32),
],
BarcodeFormat::UPC_EAN_EXTENSION,
);
if let Some(ed) = extensionData {
extensionRXingResult.putAllMetadata(ed);
}
Ok(extensionRXingResult)
}
fn decodeMiddle(
&self,
row: &BitArray,
startRange: &[u32; 3],
resultString: &mut String,
) -> Result<u32, Exceptions> {
let mut counters = self.decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
let end = row.getSize();
let mut rowOffset = startRange[1] as usize;
let mut checkParity = 0;
let mut x = 0;
while x < 2 && rowOffset < end {
// for (int x = 0; x < 2 && rowOffset < end; x++) {
let bestMatch = StandIn::decodeDigit(
row,
&mut counters,
rowOffset,
&upc_ean_reader::L_AND_G_PATTERNS,
)?;
resultString.push(char::from_u32('0' as u32 + bestMatch as u32 % 10).unwrap());
// for counter in counters {
// // for (int counter : counters) {
// rowOffset += counter;
// }
rowOffset += counters.iter().sum::<u32>() as usize;
if bestMatch >= 10 {
checkParity |= 1 << (1 - x);
}
if x != 1 {
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
x += 1;
}
if resultString.chars().count() != 2 {
return Err(Exceptions::NotFoundException("".to_owned()));
}
if resultString.parse::<u32>().unwrap() % 4 != checkParity {
// if (Integer.parseInt(resultString.toString()) % 4 != checkParity) {
return Err(Exceptions::NotFoundException("".to_owned()));
}
Ok(rowOffset as u32)
}
/**
* @param raw raw content of extension
* @return formatted interpretation of raw content as a {@link Map} mapping
* one {@link RXingResultMetadataType} to appropriate value, or {@code null} if not known
*/
fn parseExtensionString(
raw: &str,
) -> Option<HashMap<RXingResultMetadataType, RXingResultMetadataValue>> {
if raw.chars().count() != 2 {
return None;
}
let mut result = HashMap::new();
result.insert(
RXingResultMetadataType::ISSUE_NUMBER,
RXingResultMetadataValue::IssueNumber(raw.parse::<i32>().unwrap()),
);
Some(result)
}
}

224
src/oned/upc_ean_extension_5_support.rs Normal file
View File

@@ -0,0 +1,224 @@
/*
* Copyright (C) 2010 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.
*/
use std::collections::HashMap;
use crate::{
common::BitArray, BarcodeFormat, Exceptions, RXingResult, RXingResultMetadataType,
RXingResultMetadataValue, RXingResultPoint,
};
use super::{upc_ean_reader, StandIn, UPCEANReader};
/**
* @see UPCEANExtension2Support
*/
pub struct UPCEANExtension5Support {
//decodeMiddleCounters : [u32;4],
// decodeRowStringBuffer : String,
}
impl Default for UPCEANExtension5Support {
fn default() -> Self {
Self {}
}
}
impl UPCEANExtension5Support {
const CHECK_DIGIT_ENCODINGS: [usize; 10] =
[0x18, 0x14, 0x12, 0x11, 0x0C, 0x06, 0x03, 0x0A, 0x09, 0x05];
pub fn decodeRow(
&self,
rowNumber: u32,
row: &BitArray,
extensionStartRange: &[usize; 2],
) -> Result<RXingResult, Exceptions> {
let mut result = String::new(); //self.decodeRowStringBuffer;
// result.setLength(0);
let end = Self::decodeMiddle(row, extensionStartRange, &mut result)?;
let resultString = result;
let extensionData = Self::parseExtensionString(&resultString);
let mut extensionRXingResult = RXingResult::new(
&resultString,
Vec::new(),
vec![
RXingResultPoint::new(
(extensionStartRange[0] + extensionStartRange[1]) as f32 / 2.0,
rowNumber as f32,
),
RXingResultPoint::new(end as f32, rowNumber as f32),
],
BarcodeFormat::UPC_EAN_EXTENSION,
);
if let Some(ed) = extensionData {
extensionRXingResult.putAllMetadata(ed);
}
Ok(extensionRXingResult)
}
fn decodeMiddle(
row: &BitArray,
startRange: &[usize; 2],
resultString: &mut String,
) -> Result<u32, Exceptions> {
let mut counters = [0_u32; 4]; //decodeMiddleCounters;
// counters[0] = 0;
// counters[1] = 0;
// counters[2] = 0;
// counters[3] = 0;
let end = row.getSize();
let mut rowOffset = startRange[1] as usize;
let mut lgPatternFound = 0;
let mut x = 0;
while x < 5 && rowOffset < end {
// for (int x = 0; x < 5 && rowOffset < end; x++) {
let bestMatch = StandIn::decodeDigit(
row,
&mut counters,
rowOffset,
&upc_ean_reader::L_AND_G_PATTERNS,
)?;
resultString.push(char::from_u32('0' as u32 + bestMatch as u32 % 10).unwrap());
// for (int counter : counters) {
// rowOffset += counter;
// }
rowOffset += counters.iter().sum::<u32>() as usize;
if bestMatch >= 10 {
lgPatternFound |= 1 << (4 - x);
}
if x != 4 {
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
x += 1;
}
if resultString.chars().count() != 5 {
return Err(Exceptions::NotFoundException("".to_owned()));
}
let checkDigit = Self::determineCheckDigit(lgPatternFound)?;
if Self::extensionChecksum(resultString) != checkDigit as u32 {
return Err(Exceptions::NotFoundException("".to_owned()));
}
Ok(rowOffset as u32)
}
fn extensionChecksum(s: &str) -> u32 {
let length = s.chars().count();
let mut sum = 0;
let mut i = length as isize - 2;
while i >= 0 {
// for (int i = length - 2; i >= 0; i -= 2) {
sum += s.chars().nth(i as usize).unwrap() as u32 - '0' as u32;
i -= 2;
}
sum *= 3;
let mut i = length as isize - 1;
while i >= 0 {
// for (int i = length - 1; i >= 0; i -= 2) {
sum += s.chars().nth(i as usize).unwrap() as u32 - '0' as u32;
i -= 2;
}
sum *= 3;
return sum % 10;
}
fn determineCheckDigit(lgPatternFound: usize) -> Result<usize, Exceptions> {
for d in 0..10 {
// for (int d = 0; d < 10; d++) {
if lgPatternFound == Self::CHECK_DIGIT_ENCODINGS[d] {
return Ok(d);
}
}
return Err(Exceptions::NotFoundException("".to_owned()));
}
/**
* @param raw raw content of extension
* @return formatted interpretation of raw content as a {@link Map} mapping
* one {@link RXingResultMetadataType} to appropriate value, or {@code null} if not known
*/
fn parseExtensionString(
raw: &str,
) -> Option<HashMap<RXingResultMetadataType, RXingResultMetadataValue>> {
if raw.chars().count() != 5 {
return None;
}
let Some(value) = Self::parseExtension5String(raw) else {
return None;
};
// Map<RXingResultMetadataType,Object> result = new EnumMap<>(RXingResultMetadataType.class);
let mut result = HashMap::new();
result.insert(
RXingResultMetadataType::SUGGESTED_PRICE,
RXingResultMetadataValue::SuggestedPrice(value),
);
Some(result)
}
fn parseExtension5String(raw: &str) -> Option<String> {
let currency = match raw.chars().nth(0).unwrap() {
'0' => "£",
'5' => "$",
'9' => {
// Reference: http://www.jollytech.com
match raw {
"90000" =>
// No suggested retail price
{
return None
}
"99991" =>
// Complementary
{
return Some("0.00".to_string())
}
"99990" => return Some("Used".to_owned()),
_ => {}
}
// Otherwise... unknown currency?
""
}
_ => "",
};
let rawAmount = raw[1..].parse::<i32>().unwrap();
// let rawAmount = Integer.parseInt(raw.substring(1));
let unitsString = (rawAmount / 100).to_string();
let hundredths = rawAmount % 100;
let hundredthsString = if hundredths < 10 {
format!("0{}", hundredths)
} else {
hundredths.to_string()
};
Some(format!("{}{}.{}", currency, unitsString, hundredthsString))
}
}

61
src/oned/upc_ean_extension_support.rs Normal file
View File

@@ -0,0 +1,61 @@
/*
* Copyright (C) 2010 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.
*/
use crate::{common::BitArray, Exceptions, RXingResult};
use super::{StandIn, UPCEANExtension2Support, UPCEANExtension5Support, UPCEANReader};
pub struct UPCEANExtensionSupport {
twoSupport: UPCEANExtension2Support,
fiveSupport: UPCEANExtension5Support,
}
impl Default for UPCEANExtensionSupport {
fn default() -> Self {
Self {
twoSupport: Default::default(),
fiveSupport: Default::default(),
}
}
}
impl UPCEANExtensionSupport {
const EXTENSION_START_PATTERN: [u32; 3] = [1, 1, 2];
pub fn decodeRow(
&self,
rowNumber: u32,
row: &BitArray,
rowOffset: usize,
) -> Result<RXingResult, Exceptions> {
let extensionStartRange =
StandIn::findGuardPattern(row, rowOffset, false, &Self::EXTENSION_START_PATTERN)?;
if let Ok(res_1) = self
.fiveSupport
.decodeRow(rowNumber, row, &extensionStartRange)
{
Ok(res_1)
} else {
self.twoSupport
.decodeRow(rowNumber, row, &Self::EXTENSION_START_PATTERN)
}
// let res_2 = twoSupport.decodeRow(rowNumber, row, extensionStartRange);
// try {
// return fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
// } catch (ReaderException ignored) {
// return twoSupport.decodeRow(rowNumber, row, extensionStartRange);
// }
}
}

855
src/oned/upc_ean_reader.rs
View File

@@ -14,73 +14,88 @@
* limitations under the License.
*/
use crate::{Exceptions, common::BitArray, RXingResult, BarcodeFormat};
use crate::{
common::BitArray, BarcodeFormat, DecodeHintType, DecodeHintValue, Exceptions, RXingResult,
RXingResultMetadataType, RXingResultMetadataValue, RXingResultPoint, Reader,
};
use super::OneDReader;
use super::{EANManufacturerOrgSupport, OneDReader, UPCEANExtensionSupport};
use lazy_static::lazy_static;
lazy_static! {
pub static ref EAN_MANUFACTURER_SUPPORT: EANManufacturerOrgSupport =
EANManufacturerOrgSupport::default();
pub static ref UPC_EAN_EXTENSION_SUPPORT: UPCEANExtensionSupport =
UPCEANExtensionSupport::default();
}
// These two values are critical for determining how permissive the decoding will be.
// We've arrived at these values through a lot of trial and error. Setting them any higher
// lets false positives creep in quickly.
const MAX_AVG_VARIANCE : f32= 0.48;
const MAX_INDIVIDUAL_VARIANCE : f32= 0.7;
// These two values are critical for determining how permissive the decoding will be.
// We've arrived at these values through a lot of trial and error. Setting them any higher
// lets false positives creep in quickly.
pub const MAX_AVG_VARIANCE: f32 = 0.48;
pub const MAX_INDIVIDUAL_VARIANCE: f32 = 0.7;
/**
* Start/end guard pattern.
*/
const START_END_PATTERN : [u32;3]= [1, 1, 1,];
/**
* Start/end guard pattern.
*/
pub const START_END_PATTERN: [u32; 3] = [1, 1, 1];
/**
* Pattern marking the middle of a UPC/EAN pattern, separating the two halves.
*/
const MIDDLE_PATTERN : [u32;5]= [1, 1, 1, 1, 1];
/**
* end guard pattern.
*/
const END_PATTERN : [u32;6]= [1, 1, 1, 1, 1, 1];
/**
* "Odd", or "L" patterns used to encode UPC/EAN digits.
*/
const L_PATTERNS : [[u32;4];10]= [
[3, 2, 1, 1], // 0
[2, 2, 2, 1], // 1
[2, 1, 2, 2], // 2
[1, 4, 1, 1], // 3
[1, 1, 3, 2], // 4
[1, 2, 3, 1], // 5
[1, 1, 1, 4], // 6
[1, 3, 1, 2], // 7
[1, 2, 1, 3], // 8
[3, 1, 1, 2] // 9
];
/**
* Pattern marking the middle of a UPC/EAN pattern, separating the two halves.
*/
pub const MIDDLE_PATTERN: [u32; 5] = [1, 1, 1, 1, 1];
/**
* end guard pattern.
*/
pub const END_PATTERN: [u32; 6] = [1, 1, 1, 1, 1, 1];
/**
* "Odd", or "L" patterns used to encode UPC/EAN digits.
*/
pub const L_PATTERNS: [[u32; 4]; 10] = [
[3, 2, 1, 1], // 0
[2, 2, 2, 1], // 1
[2, 1, 2, 2], // 2
[1, 4, 1, 1], // 3
[1, 1, 3, 2], // 4
[1, 2, 3, 1], // 5
[1, 1, 1, 4], // 6
[1, 3, 1, 2], // 7
[1, 2, 1, 3], // 8
[3, 1, 1, 2], // 9
];
/**
* As above but also including the "even", or "G" patterns used to encode UPC/EAN digits.
*/
const L_AND_G_PATTERNS : [[u32;4];20] = {
let new_array = [[0_u32;4];20];//new int[20][];
new_array[0..10].copy_from_slice(&L_PATTERNS[0..10]);
/**
* As above but also including the "even", or "G" patterns used to encode UPC/EAN digits.
*/
pub const L_AND_G_PATTERNS: [[u32; 4]; 20] = {
let mut new_array = [[0_u32; 4]; 20]; //new int[20][];
let mut i = 0;
while i < 10 {
new_array[i] = L_PATTERNS[i];
i += 1;
}
// new_array[0..10].copy_from_slice(&L_PATTERNS[0..10]);
// System.arraycopy(L_PATTERNS, 0, L_AND_G_PATTERNS, 0, 10);
let mut i = 10;
while i < 20 {
// for (int i = 10; i < 20; i++) {
let widths = &L_PATTERNS[i - 10];
let reversedWidths = [0_u32;4];//new int[widths.length];
let mut j = 0;
while j < 4 {
// for (int j = 0; j < widths.length; j++) {
reversedWidths[j] = widths[4 - j - 1];
j+=1;
}
new_array[i] = reversedWidths;
// for (int i = 10; i < 20; i++) {
let widths = &L_PATTERNS[i - 10];
let mut reversedWidths = [0_u32; 4]; //new int[widths.length];
let mut j = 0;
while j < 4 {
// for (int j = 0; j < widths.length; j++) {
reversedWidths[j] = widths[4 - j - 1];
i+=1;
j += 1;
}
new_array[i] = reversedWidths;
i += 1;
}
new_array
};
};
/**
* <p>Encapsulates functionality and implementation that is common to UPC and EAN families
@@ -91,327 +106,461 @@ use super::OneDReader;
* @author alasdair@google.com (Alasdair Mackintosh)
*/
pub trait UPCEANReader: OneDReader {
// private final StringBuilder decodeRowStringBuffer;
// private final UPCEANExtensionSupport extensionReader;
// private final EANManufacturerOrgSupport eanManSupport;
// private final StringBuilder decodeRowStringBuffer;
// private final UPCEANExtensionSupport extensionReader;
// private final EANManufacturerOrgSupport eanManSupport;
// protected UPCEANReader() {
// decodeRowStringBuffer = new StringBuilder(20);
// extensionReader = new UPCEANExtensionSupport();
// eanManSupport = new EANManufacturerOrgSupport();
// }
// protected UPCEANReader() {
// decodeRowStringBuffer = new StringBuilder(20);
// extensionReader = new UPCEANExtensionSupport();
// eanManSupport = new EANManufacturerOrgSupport();
// }
fn findStartGuardPattern( row:&BitArray) -> Result<Vec<u32>,Exceptions> {
let foundStart = false;
let startRange ;//= null;
let nextStart = 0;
let counters = vec![0_u32;START_END_PATTERN.len()];
while (!foundStart) {
Arrays.fill(counters, 0, START_END_PATTERN.len(), 0);
startRange = Self::findGuardPattern(row, nextStart, false, START_END_PATTERN, counters);
let start = startRange[0];
nextStart = startRange[1];
// Make sure there is a quiet zone at least as big as the start pattern before the barcode.
// If this check would run off the left edge of the image, do not accept this barcode,
// as it is very likely to be a false positive.
let quietStart = start - (nextStart - start);
if (quietStart >= 0) {
foundStart = row.isRange(quietStart, start, false);
}
}
return startRange;
}
// @Override
// public RXingResult decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints)
// throws NotFoundException, ChecksumException, FormatException {
// return decodeRow(rowNumber, row, findStartGuardPattern(row), hints);
// }
/**
* <p>Like {@link #decodeRow(int, BitArray, Map)}, but
* allows caller to inform method about where the UPC/EAN start pattern is
* found. This allows this to be computed once and reused across many implementations.</p>
*
* @param rowNumber row index into the image
* @param row encoding of the row of the barcode image
* @param startGuardRange start/end column where the opening start pattern was found
* @param hints optional hints that influence decoding
* @return {@link RXingResult} encapsulating the result of decoding a barcode in the row
* @throws NotFoundException if no potential barcode is found
* @throws ChecksumException if a potential barcode is found but does not pass its checksum
* @throws FormatException if a potential barcode is found but format is invalid
*/
fn decodeRowWithGuardRange(rowNumber:u32,
row:&BitArray,
startGuardRange:&[u32;2],
hints:&crate::DecodingHintDictionary)
-> Result<RXingResult,Exceptions> {
RXingResultPointCallback resultPointCallback = hints == null ? null :
(RXingResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
int symbologyIdentifier = 0;
if (resultPointCallback != null) {
resultPointCallback.foundPossibleRXingResultPoint(new RXingResultPoint(
(startGuardRange[0] + startGuardRange[1]) / 2.0f, rowNumber
));
}
StringBuilder result = decodeRowStringBuffer;
result.setLength(0);
int endStart = decodeMiddle(row, startGuardRange, result);
if (resultPointCallback != null) {
resultPointCallback.foundPossibleRXingResultPoint(new RXingResultPoint(
endStart, rowNumber
));
}
int[] endRange = decodeEnd(row, endStart);
if (resultPointCallback != null) {
resultPointCallback.foundPossibleRXingResultPoint(new RXingResultPoint(
(endRange[0] + endRange[1]) / 2.0f, rowNumber
));
}
// Make sure there is a quiet zone at least as big as the end pattern after the barcode. The
// spec might want more whitespace, but in practice this is the maximum we can count on.
int end = endRange[1];
int quietEnd = end + (end - endRange[0]);
if (quietEnd >= row.getSize() || !row.isRange(end, quietEnd, false)) {
throw NotFoundException.getNotFoundInstance();
}
String resultString = result.toString();
// UPC/EAN should never be less than 8 chars anyway
if (resultString.length() < 8) {
throw FormatException.getFormatInstance();
}
if (!checkChecksum(resultString)) {
throw ChecksumException.getChecksumInstance();
}
float left = (startGuardRange[1] + startGuardRange[0]) / 2.0f;
float right = (endRange[1] + endRange[0]) / 2.0f;
BarcodeFormat format = getBarcodeFormat();
RXingResult decodeRXingResult = new RXingResult(resultString,
null, // no natural byte representation for these barcodes
new RXingResultPoint[]{
new RXingResultPoint(left, rowNumber),
new RXingResultPoint(right, rowNumber)},
format);
int extensionLength = 0;
try {
RXingResult extensionRXingResult = extensionReader.decodeRow(rowNumber, row, endRange[1]);
decodeRXingResult.putMetadata(RXingResultMetadataType.UPC_EAN_EXTENSION, extensionRXingResult.getText());
decodeRXingResult.putAllMetadata(extensionRXingResult.getRXingResultMetadata());
decodeRXingResult.addRXingResultPoints(extensionRXingResult.getRXingResultPoints());
extensionLength = extensionRXingResult.getText().length();
} catch (ReaderException re) {
// continue
}
int[] allowedExtensions =
hints == null ? null : (int[]) hints.get(DecodeHintType.ALLOWED_EAN_EXTENSIONS);
if (allowedExtensions != null) {
boolean valid = false;
for (int length : allowedExtensions) {
if (extensionLength == length) {
valid = true;
break;
fn findStartGuardPattern(row: &BitArray) -> Result<[usize; 2], Exceptions>
where
Self: Sized,
{
let mut foundStart = false;
let mut startRange = [0; 2]; //= null;
let mut nextStart = 0;
let mut counters = [0_u32; 3]; //vec![0_u32;START_END_PATTERN.len()];
while !foundStart {
counters.fill(0);
// Arrays.fill(counters, 0, START_END_PATTERN.len(), 0);
startRange = Self::findGuardPatternWithCounters(
row,
nextStart,
false,
&START_END_PATTERN,
&mut counters,
)?;
let start = startRange[0];
nextStart = startRange[1];
// Make sure there is a quiet zone at least as big as the start pattern before the barcode.
// If this check would run off the left edge of the image, do not accept this barcode,
// as it is very likely to be a false positive.
let quietStart = start as isize - (nextStart as isize - start as isize);
if quietStart >= 0 {
foundStart = row.isRange(quietStart as usize, start, false)?;
}
}
}
if (!valid) {
throw NotFoundException.getNotFoundInstance();
}
Ok(startRange)
}
if (format == BarcodeFormat.EAN_13 || format == BarcodeFormat.UPC_A) {
String countryID = eanManSupport.lookupCountryIdentifier(resultString);
if (countryID != null) {
decodeRXingResult.putMetadata(RXingResultMetadataType.POSSIBLE_COUNTRY, countryID);
}
}
if (format == BarcodeFormat.EAN_8) {
symbologyIdentifier = 4;
// @Override
// public RXingResult decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints)
// throws NotFoundException, ChecksumException, FormatException {
// return decodeRow(rowNumber, row, findStartGuardPattern(row), hints);
// }
/**
* <p>Like {@link #decodeRow(int, BitArray, Map)}, but
* allows caller to inform method about where the UPC/EAN start pattern is
* found. This allows this to be computed once and reused across many implementations.</p>
*
* @param rowNumber row index into the image
* @param row encoding of the row of the barcode image
* @param startGuardRange start/end column where the opening start pattern was found
* @param hints optional hints that influence decoding
* @return {@link RXingResult} encapsulating the result of decoding a barcode in the row
* @throws NotFoundException if no potential barcode is found
* @throws ChecksumException if a potential barcode is found but does not pass its checksum
* @throws FormatException if a potential barcode is found but format is invalid
*/
fn decodeRowWithGuardRange(
&self,
rowNumber: u32,
row: &BitArray,
startGuardRange: &[usize; 2],
hints: &crate::DecodingHintDictionary,
) -> Result<RXingResult, Exceptions>
where
Self: Sized,
{
let resultPointCallback = hints.get(&DecodeHintType::NEED_RESULT_POINT_CALLBACK);
let mut symbologyIdentifier = 0;
if let Some(DecodeHintValue::NeedResultPointCallback(cb)) = resultPointCallback {
cb(&RXingResultPoint::new(
(startGuardRange[0] + startGuardRange[1]) as f32 / 2.0,
rowNumber as f32,
));
}
let mut result = String::new(); //decodeRowStringBuffer;
let endStart = self.decodeMiddle(row, startGuardRange, &mut result)?;
if let Some(DecodeHintValue::NeedResultPointCallback(cb)) = resultPointCallback {
cb(&RXingResultPoint::new(endStart as f32, rowNumber as f32));
}
let endRange = Self::decodeEnd(row, endStart)?;
if let Some(DecodeHintValue::NeedResultPointCallback(cb)) = resultPointCallback {
cb(&RXingResultPoint::new(
(endRange[0] + endRange[1]) as f32 / 2.0,
rowNumber as f32,
));
}
// Make sure there is a quiet zone at least as big as the end pattern after the barcode. The
// spec might want more whitespace, but in practice this is the maximum we can count on.
let end = endRange[1];
let quietEnd = end + (end - endRange[0]);
if quietEnd >= row.getSize() || !row.isRange(end, quietEnd, false)? {
return Err(Exceptions::NotFoundException("".to_owned()));
}
let resultString = result;
// UPC/EAN should never be less than 8 chars anyway
if resultString.chars().count() < 8 {
return Err(Exceptions::FormatException("".to_owned()));
}
if !self.checkChecksum(&resultString)? {
return Err(Exceptions::ChecksumException("".to_owned()));
}
let left = (startGuardRange[1] + startGuardRange[0]) as f32 / 2.0;
let right: f32 = (endRange[1] + endRange[0]) as f32 / 2.0;
let format = self.getBarcodeFormat();
let mut decodeRXingResult = RXingResult::new(
&resultString,
Vec::new(), // no natural byte representation for these barcodes
vec![
RXingResultPoint::new(left, rowNumber as f32),
RXingResultPoint::new(right, rowNumber as f32),
],
format,
);
let mut extensionLength = 0;
let mut attempt = || -> Result<(), Exceptions> {
let extensionRXingResult =
UPC_EAN_EXTENSION_SUPPORT.decodeRow(rowNumber, row, endRange[1])?;
decodeRXingResult.putMetadata(
RXingResultMetadataType::UPC_EAN_EXTENSION,
RXingResultMetadataValue::UpcEanExtension(extensionRXingResult.getText().clone()),
);
decodeRXingResult.putAllMetadata(extensionRXingResult.getRXingResultMetadata().clone());
decodeRXingResult
.addRXingResultPoints(&mut extensionRXingResult.getRXingResultPoints().clone());
extensionLength = extensionRXingResult.getText().chars().count();
Ok(())
};
let try_result = attempt();
// if let Err(Exceptions::ReaderException(_)) = try_result {
// } else if try_result.is_err() {
// return Err(try_result.err().unwrap());
// }
// try {
// RXingResult extensionRXingResult = extensionReader.decodeRow(rowNumber, row, endRange[1]);
// decodeRXingResult.putMetadata(RXingResultMetadataType.UPC_EAN_EXTENSION, extensionRXingResult.getText());
// decodeRXingResult.putAllMetadata(extensionRXingResult.getRXingResultMetadata());
// decodeRXingResult.addRXingResultPoints(extensionRXingResult.getRXingResultPoints());
// extensionLength = extensionRXingResult.getText().length();
// } catch (ReaderException re) {
// // continue
// }
if let Some(DecodeHintValue::AllowedEanExtensions(allowedExtensions)) =
hints.get(&DecodeHintType::ALLOWED_EAN_EXTENSIONS)
{
let mut valid = false;
for length in allowedExtensions {
// for (int length : allowedExtensions) {
if extensionLength == *length as usize {
valid = true;
break;
}
}
if !valid {
return Err(Exceptions::NotFoundException("".to_owned()));
}
}
// let allowedExtensions =
// hints == null ? null : (int[]) hints.get(DecodeHintType.ALLOWED_EAN_EXTENSIONS);
// if (allowedExtensions != null) {
// let valid = false;
// for (int length : allowedExtensions) {
// if (extensionLength == length) {
// valid = true;
// break;
// }
// }
// if (!valid) {
// return Err(Exceptions::NotFoundException("".to_owned()));
// }
// }
if format == BarcodeFormat::EAN_13 || format == BarcodeFormat::UPC_A {
let countryID = EAN_MANUFACTURER_SUPPORT.lookupCountryIdentifier(&resultString);
if let Some(cid) = countryID {
decodeRXingResult.putMetadata(
RXingResultMetadataType::POSSIBLE_COUNTRY,
RXingResultMetadataValue::PossibleCountry(cid),
);
}
}
if format == BarcodeFormat::EAN_8 {
symbologyIdentifier = 4;
}
decodeRXingResult.putMetadata(
RXingResultMetadataType::SYMBOLOGY_IDENTIFIER,
RXingResultMetadataValue::SymbologyIdentifier(format!("]E{}", symbologyIdentifier)),
);
Ok(decodeRXingResult)
}
decodeRXingResult.putMetadata(RXingResultMetadataType.SYMBOLOGY_IDENTIFIER, "]E" + symbologyIdentifier);
return decodeRXingResult;
}
/**
* @param s string of digits to check
* @return {@link #checkStandardUPCEANChecksum(CharSequence)}
* @throws FormatException if the string does not contain only digits
*/
fn checkChecksum(&self, s:&str) -> Result<bool,Exceptions> {
Self::checkStandardUPCEANChecksum(s)
}
/**
* Computes the UPC/EAN checksum on a string of digits, and reports
* whether the checksum is correct or not.
*
* @param s string of digits to check
* @return true iff string of digits passes the UPC/EAN checksum algorithm
* @throws FormatException if the string does not contain only digits
*/
fn checkStandardUPCEANChecksum( s:&str) -> Result<bool,Exceptions> {
let length = s.len();
if length == 0 {
return Ok(false);
/**
* @param s string of digits to check
* @return {@link #checkStandardUPCEANChecksum(CharSequence)}
* @throws FormatException if the string does not contain only digits
*/
fn checkChecksum(&self, s: &str) -> Result<bool, Exceptions> {
Self::checkStandardUPCEANChecksum(s)
}
let check = Character.digit(s.charAt(length - 1), 10);
return getStandardUPCEANChecksum(s.subSequence(0, length - 1)) == check;
}
fn getStandardUPCEANChecksum( s:&str) -> Result<u32,Exceptions> {
let length = s.chars().count();
let sum = 0;
let mut i = length - 1;
while i >= 0 {
// for (int i = length - 1; i >= 0; i -= 2) {
let digit = s.charAt(i) - '0';
if (digit < 0 || digit > 9) {
throw FormatException.getFormatInstance();
}
sum += digit;
/**
* Computes the UPC/EAN checksum on a string of digits, and reports
* whether the checksum is correct or not.
*
* @param s string of digits to check
* @return true iff string of digits passes the UPC/EAN checksum algorithm
* @throws FormatException if the string does not contain only digits
*/
fn checkStandardUPCEANChecksum(s: &str) -> Result<bool, Exceptions> {
let length = s.len();
if length == 0 {
return Ok(false);
}
let char_in_question = s.chars().nth(length - 1).unwrap();
let check = char_in_question.is_digit(10);
// let check = Character.digit(s.charAt(length - 1), 10);
i -= 2;
let check_against = &s[..length - 1]; //s.subSequence(0, length - 1);
let calculated_checksum = Self::getStandardUPCEANChecksum(check_against)?;
Ok( calculated_checksum == if check { char_in_question.to_digit(10).unwrap() } else { u32::MAX })
}
sum *= 3;
let mut i = length - 2;
while i >= 0 {
// for (int i = length - 2; i >= 0; i -= 2) {
let digit = s.charAt(i) - '0';
if (digit < 0 || digit > 9) {
throw FormatException.getFormatInstance();
}
sum += digit;
i -= 2;
fn getStandardUPCEANChecksum(s: &str) -> Result<u32, Exceptions> {
let length = s.chars().count();
let mut sum = 0;
let mut i = length as isize - 1;
while i >= 0 {
// for (int i = length - 1; i >= 0; i -= 2) {
let digit = (s.chars().nth(i as usize).unwrap() as i32) - ('0' as i32);
if digit < 0 || digit > 9 {
return Err(Exceptions::FormatException("".to_owned()));
}
sum += digit;
i -= 2;
}
sum *= 3;
let mut i = length as isize - 2;
while i >= 0 {
// for (int i = length - 2; i >= 0; i -= 2) {
let digit = (s.chars().nth(i as usize).unwrap() as i32) - ('0' as i32);
if digit < 0 || digit > 9 {
return Err(Exceptions::FormatException("".to_owned()));
}
sum += digit;
i -= 2;
}
Ok(((1000 - sum) % 10) as u32)
}
return (1000 - sum) % 10;
}
fn decodeEnd(&self, row:&BitArray, endStart:usize) -> Result<[usize;2],Exceptions> {
Self::findGuardPattern(row, endStart, false, START_END_PATTERN)
}
fn decodeEnd(row: &BitArray, endStart: usize) -> Result<[usize; 2], Exceptions>
where
Self: Sized,
{
Self::findGuardPattern(row, endStart, false, &START_END_PATTERN)
}
fn findGuardPattern( row:&BitArray,
rowOffset:usize,
whiteFirst:bool,
pattern:[u32;3]) -> Result<[usize;2],Exceptions> {
Self::findGuardPatternWithCounters(row, rowOffset, whiteFirst, pattern, vec![0u32;pattern.len()])
}
fn findGuardPattern(
row: &BitArray,
rowOffset: usize,
whiteFirst: bool,
pattern: &[u32],
) -> Result<[usize; 2], Exceptions>
where
Self: Sized,
{
Self::findGuardPatternWithCounters(row, rowOffset, whiteFirst, pattern, &mut vec![0u32; pattern.len()])
}
/**
* @param row row of black/white values to search
* @param rowOffset position to start search
* @param whiteFirst if true, indicates that the pattern specifies white/black/white/...
* pixel counts, otherwise, it is interpreted as black/white/black/...
* @param pattern pattern of counts of number of black and white pixels that are being
* searched for as a pattern
* @param counters array of counters, as long as pattern, to re-use
* @return start/end horizontal offset of guard pattern, as an array of two ints
* @throws NotFoundException if pattern is not found
*/
fn findGuardPatternWithCounters( row:&BitArray,
rowOffset:usize,
whiteFirst:bool,
pattern:&[u32;3],
counters:&Vec<u32>) -> Result<[usize;2],Exceptions> {
let width = row.getSize();
rowOffset = if whiteFirst {row.getNextUnset(rowOffset)} else {row.getNextSet(rowOffset)};
let counterPosition = 0;
let patternStart = rowOffset;
let patternLength = pattern.len();
let isWhite = whiteFirst;
for x in rowOffset ..width {
// for (int x = rowOffset; x < width; x++) {
if (row.get(x) != isWhite) {
counters[counterPosition]+=1;
} else {
if (counterPosition == patternLength - 1) {
if (Self::patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE) < MAX_AVG_VARIANCE) {
return [patternStart, x];
}
patternStart += counters[0] + counters[1];
System.arraycopy(counters, 2, counters, 0, counterPosition - 1);
counters[counterPosition - 1] = 0;
counters[counterPosition] = 0;
counterPosition-=1;
/**
* @param row row of black/white values to search
* @param rowOffset position to start search
* @param whiteFirst if true, indicates that the pattern specifies white/black/white/...
* pixel counts, otherwise, it is interpreted as black/white/black/...
* @param pattern pattern of counts of number of black and white pixels that are being
* searched for as a pattern
* @param counters array of counters, as long as pattern, to re-use
* @return start/end horizontal offset of guard pattern, as an array of two ints
* @throws NotFoundException if pattern is not found
*/
fn findGuardPatternWithCounters(
row: &BitArray,
rowOffset: usize,
whiteFirst: bool,
pattern: &[u32],
counters: &mut [u32],
) -> Result<[usize; 2], Exceptions>
where
Self: Sized,
{
let width = row.getSize();
let rowOffset = if whiteFirst {
row.getNextUnset(rowOffset)
} else {
counterPosition+=1;
row.getNextSet(rowOffset)
};
let mut counterPosition = 0;
let mut patternStart = rowOffset;
let patternLength = pattern.len();
let mut isWhite = whiteFirst;
for x in rowOffset..width {
// for (int x = rowOffset; x < width; x++) {
if row.get(x) != isWhite {
counters[counterPosition] += 1;
} else {
if counterPosition == patternLength - 1 {
if Self::patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE)
< MAX_AVG_VARIANCE
{
return Ok([patternStart, x]);
}
patternStart += (counters[0] + counters[1]) as usize;
let slc = &counters[2..(counterPosition - 1 + 2)].to_vec();
counters[..(counterPosition - 1)].copy_from_slice(slc);
// System.arraycopy(counters, 2, counters, 0, counterPosition - 1);
counters[counterPosition - 1] = 0;
counters[counterPosition] = 0;
counterPosition -= 1;
} else {
counterPosition += 1;
}
counters[counterPosition] = 1;
isWhite = !isWhite;
}
}
counters[counterPosition] = 1;
isWhite = !isWhite;
}
Err(Exceptions::NotFoundException("".to_owned()))
}
throw NotFoundException.getNotFoundInstance();
}
/**
* Attempts to decode a single UPC/EAN-encoded digit.
*
* @param row row of black/white values to decode
* @param counters the counts of runs of observed black/white/black/... values
* @param rowOffset horizontal offset to start decoding from
* @param patterns the set of patterns to use to decode -- sometimes different encodings
* for the digits 0-9 are used, and this indicates the encodings for 0 to 9 that should
* be used
* @return horizontal offset of first pixel beyond the decoded digit
* @throws NotFoundException if digit cannot be decoded
*/
fn decodeDigit( row:&BitArray, counters:&Vec<u32>, rowOffset:usize, patterns:&Vec<Vec<u32>>)
-> Result<u32,Exceptions> {
Self::recordPattern(row, rowOffset, counters);
let bestVariance = MAX_AVG_VARIANCE; // worst variance we'll accept
let bestMatch = -1_isize;
let max = patterns.len();
for i in 0..max {
// for (int i = 0; i < max; i++) {
let pattern = patterns[i];
let variance:f32 = Self::patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE);
if (variance < bestVariance) {
bestVariance = variance;
bestMatch = i;
}
/**
* Attempts to decode a single UPC/EAN-encoded digit.
*
* @param row row of black/white values to decode
* @param counters the counts of runs of observed black/white/black/... values
* @param rowOffset horizontal offset to start decoding from
* @param patterns the set of patterns to use to decode -- sometimes different encodings
* for the digits 0-9 are used, and this indicates the encodings for 0 to 9 that should
* be used
* @return horizontal offset of first pixel beyond the decoded digit
* @throws NotFoundException if digit cannot be decoded
*/
fn decodeDigit(
row: &BitArray,
counters: &mut [u32; 4],
rowOffset: usize,
patterns: &[[u32; 4]],
) -> Result<usize, Exceptions>
where
Self: Sized,
{
Self::recordPattern(row, rowOffset, counters)?;
let mut bestVariance = MAX_AVG_VARIANCE; // worst variance we'll accept
let mut bestMatch = -1_isize;
let max = patterns.len();
for i in 0..max {
// for (int i = 0; i < max; i++) {
let pattern = &patterns[i];
let variance: f32 =
Self::patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE);
if variance < bestVariance {
bestVariance = variance;
bestMatch = i as isize;
}
}
if bestMatch >= 0 {
Ok(bestMatch as usize)
} else {
Err(Exceptions::NotFoundException("".to_owned()))
}
}
if (bestMatch >= 0) {
return bestMatch;
} else {
throw NotFoundException.getNotFoundInstance();
}
}
/**
* Get the format of this decoder.
*
* @return The 1D format.
*/
fn getBarcodeFormat() -> BarcodeFormat;
/**
* Subclasses override this to decode the portion of a barcode between the start
* and end guard patterns.
*
* @param row row of black/white values to search
* @param startRange start/end offset of start guard pattern
* @param resultString {@link StringBuilder} to append decoded chars to
* @return horizontal offset of first pixel after the "middle" that was decoded
* @throws NotFoundException if decoding could not complete successfully
*/
fn decodeMiddle( row:&BitArray,
startRange:&[u32;2],
resultString:&mut String) -> Result<u32,Exceptions>;
/**
* Get the format of this decoder.
*
* @return The 1D format.
*/
fn getBarcodeFormat(&self) -> BarcodeFormat;
/**
* Subclasses override this to decode the portion of a barcode between the start
* and end guard patterns.
*
* @param row row of black/white values to search
* @param startRange start/end offset of start guard pattern
* @param resultString {@link StringBuilder} to append decoded chars to
* @return horizontal offset of first pixel after the "middle" that was decoded
* @throws NotFoundException if decoding could not complete successfully
*/
fn decodeMiddle(
&self,
row: &BitArray,
startRange: &[usize; 2],
resultString: &mut String,
) -> Result<usize, Exceptions>;
}
pub struct StandIn;
impl UPCEANReader for StandIn {
fn getBarcodeFormat(&self) -> BarcodeFormat {
todo!()
}
fn decodeMiddle(
&self,
_row: &BitArray,
_startRange: &[usize; 2],
_resultString: &mut String,
) -> Result<usize, Exceptions> {
todo!()
}
}
impl OneDReader for StandIn {
fn decodeRow(
&mut self,
_rowNumber: u32,
_row: &BitArray,
_hints: &crate::DecodingHintDictionary,
) -> Result<RXingResult, Exceptions> {
todo!()
}
}
impl Reader for StandIn {
fn decode(&mut self, _image: &crate::BinaryBitmap) -> Result<RXingResult, Exceptions> {
todo!()
}
fn decode_with_hints(
&mut self,
_image: &crate::BinaryBitmap,
_hints: &crate::DecodingHintDictionary,
) -> Result<RXingResult, Exceptions> {
todo!()
}
}