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file locator detects multiple file matches

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hneemann 2021-04-22 08:37:44 +02:00
parent 8b77ecd513
commit b60bf7d807
1 changed files with 23 additions and 20 deletions
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43
src/main/java/de/neemann/digital/FileLocator.java
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@ -12,6 +12,8 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
/**
* Helper to find a file if only the filename is known.
@ -25,7 +27,6 @@ public class FileLocator {
private FileHistory history;
private File libraryRoot;
private File baseFile;
private int fileCounter;
/**
@ -139,38 +140,40 @@ public class FileLocator {
if (libraryRoot != null) {
LOGGER.debug(filename + ": start library folder lookup");
fileCounter = 0;
File f = search(libraryRoot);
if (f != null) {
LOGGER.debug(filename + " found in library folder");
return f;
ArrayList<File> foundFiles = new ArrayList<>();
try {
search(libraryRoot, foundFiles, MAX_FILE_COUNTER);
if (foundFiles.size() == 1) {
LOGGER.debug(filename + " found in library folder");
return foundFiles.get(0);
}
} catch (IOException e) {
LOGGER.debug(filename + ": " + e.getMessage());
}
}
LOGGER.debug(filename + " not found");
return file;
}
private File search(File path) {
if (fileCounter > MAX_FILE_COUNTER)
return null;
private int search(File path, ArrayList<File> foundFiles, int fileCounter) throws IOException {
if (fileCounter < 0)
throw new IOException("to many files");
File[] list = path.listFiles();
if (list != null) {
for (File f : list) {
if (f.isFile() && f.getName().equals(filename))
return f;
fileCounter++;
}
for (File f : list) {
if (f.isDirectory() && !f.getName().startsWith(".")) {
File af = search(f);
if (af != null)
return af;
if (f.isFile() && f.getName().equals(filename)) {
foundFiles.add(f);
if (foundFiles.size() > 1)
throw new IOException("multiple matching files: " + foundFiles);
}
fileCounter--;
}
for (File f : list)
if (f.isDirectory() && !f.getName().startsWith("."))
fileCounter = search(f, foundFiles, fileCounter);
}
return null;
return fileCounter;
}
}