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write and parse both multipath and single descriptors in wallet output descriptor export

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This commit is contained in:
Craig Raw 2023-02-09 09:06:30 +02:00
parent ff0c381437
commit b15d6308bd
1 changed files with 56 additions and 7 deletions
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63
src/main/java/com/sparrowwallet/sparrow/io/Descriptor.java
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@ -7,7 +7,8 @@ import com.sparrowwallet.drongo.wallet.WalletModel;
import java.io.*; import java.io.*;
import java.nio.charset.StandardCharsets; import java.nio.charset.StandardCharsets;
import java.util.stream.Collectors; import java.util.ArrayList;
import java.util.List;
public class Descriptor implements WalletImport, WalletExport { public class Descriptor implements WalletImport, WalletExport {
@ -24,10 +25,29 @@ public class Descriptor implements WalletImport, WalletExport {
@Override @Override
public void exportWallet(Wallet wallet, OutputStream outputStream) throws ExportException { public void exportWallet(Wallet wallet, OutputStream outputStream) throws ExportException {
try { try {
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream));
bufferedWriter.write("# Receive and change descriptor (BIP389):");
bufferedWriter.newLine();
OutputDescriptor outputDescriptor = OutputDescriptor.getOutputDescriptor(wallet, KeyPurpose.DEFAULT_PURPOSES, null); OutputDescriptor outputDescriptor = OutputDescriptor.getOutputDescriptor(wallet, KeyPurpose.DEFAULT_PURPOSES, null);
String outputDescriptorString = outputDescriptor.toString(true); bufferedWriter.write(outputDescriptor.toString(true));
outputStream.write(outputDescriptorString.getBytes(StandardCharsets.UTF_8)); bufferedWriter.newLine();
outputStream.flush(); bufferedWriter.newLine();
bufferedWriter.newLine();
bufferedWriter.write("# Receive descriptor (Bitcoin Core):");
bufferedWriter.newLine();
OutputDescriptor receiveDescriptor = OutputDescriptor.getOutputDescriptor(wallet, KeyPurpose.RECEIVE, null);
bufferedWriter.write(receiveDescriptor.toString(true));
bufferedWriter.newLine();
bufferedWriter.newLine();
bufferedWriter.write("# Change descriptor (Bitcoin Core):");
bufferedWriter.newLine();
OutputDescriptor changeDescriptor = OutputDescriptor.getOutputDescriptor(wallet, KeyPurpose.CHANGE, null);
bufferedWriter.write(changeDescriptor.toString(true));
bufferedWriter.newLine();
bufferedWriter.flush();
} catch(Exception e) { } catch(Exception e) {
throw new ExportException("Error writing output descriptor", e); throw new ExportException("Error writing output descriptor", e);
} }
@ -77,14 +97,43 @@ public class Descriptor implements WalletImport, WalletExport {
//ignore //ignore
} }
String outputDescriptor = new BufferedReader(new InputStreamReader(secondClone, StandardCharsets.UTF_8)).lines().collect(Collectors.joining("\n")); List<String> paragraphs = getParagraphs(secondClone);
OutputDescriptor descriptor = OutputDescriptor.getOutputDescriptor(outputDescriptor.trim()); for(String paragraph : paragraphs) {
return descriptor.toWallet(); OutputDescriptor descriptor = OutputDescriptor.getOutputDescriptor(paragraph);
return descriptor.toWallet();
}
throw new ImportException("Could not find an output descriptor in the file");
} catch(Exception e) { } catch(Exception e) {
throw new ImportException("Error importing output descriptor", e); throw new ImportException("Error importing output descriptor", e);
} }
} }
private static List<String> getParagraphs(InputStream inputStream) {
List<String> paragraphs = new ArrayList<>();
StringBuilder paragraph = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
for(String line : reader.lines().map(String::trim).toArray(String[]::new)) {
if(line.isEmpty()) {
if(paragraph.length() > 0) {
paragraphs.add(paragraph.toString());
paragraph.setLength(0);
}
} else if(line.startsWith("#")) {
continue;
} else {
paragraph.append(line);
}
}
if(paragraph.length() > 0) {
paragraphs.add(paragraph.toString());
}
return paragraphs;
}
@Override @Override
public boolean isWalletImportScannable() { public boolean isWalletImportScannable() {
return false; return false;