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2858 minimized use of isFile and isDirectory when populating Examiner case list

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This commit is contained in:
William Schaefer 2017-07-26 18:39:16 -04:00
parent 934bcfd2b2
commit 692a61c8f5
1 changed files with 26 additions and 43 deletions
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65
Experimental/src/org/sleuthkit/autopsy/experimental/autoingest/PathUtils.java
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@ -23,17 +23,13 @@ import java.io.FilenameFilter;
import java.nio.file.Path; import java.nio.file.Path;
import java.nio.file.Paths; import java.nio.file.Paths;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections; import java.util.Collections;
import java.util.List; import java.util.List;
import org.sleuthkit.autopsy.casemodule.Case;
import org.sleuthkit.autopsy.casemodule.CaseMetadata; import org.sleuthkit.autopsy.casemodule.CaseMetadata;
import org.sleuthkit.autopsy.casemodule.GeneralFilter;
final class PathUtils { final class PathUtils {
private static final List<String> CASE_METADATA_FILE_EXTS = Arrays.asList(new String[]{CaseMetadata.getFileExtension()}); private final static String CASE_METADATA_EXT = CaseMetadata.getFileExtension();
private static final GeneralFilter caseMetadataFileFilter = new GeneralFilter(CASE_METADATA_FILE_EXTS, "Autopsy Case File");
/** /**
* Searches a given folder for the most recently modified case folder for a * Searches a given folder for the most recently modified case folder for a
@ -83,34 +79,6 @@ final class PathUtils {
return caseFolderPaths; return caseFolderPaths;
} }
/**
* Determines whether or not there is a case metadata file in a given
* folder.
*
* @param folderPath Path to the folder to search.
*
* @return True or false.
*/
static boolean hasCaseMetadataFile(Path folderPath) {
/**
* TODO: If need be, this can be rewritten without the FilenameFilter so
* that it does not necessarily visit every file in the folder.
*/
File folder = folderPath.toFile();
if (!folder.isDirectory()) {
return false;
}
String[] caseDataFiles = folder.list((File folder1, String fileName) -> {
File file = new File(folder1, fileName);
if (file.isFile()) {
return caseMetadataFileFilter.accept(file);
}
return false;
});
return caseDataFiles.length != 0;
}
/** /**
* Extracts the case name from a case folder path. * Extracts the case name from a case folder path.
* *
@ -141,6 +109,12 @@ final class PathUtils {
return Paths.get(caseFoldersPath.toString(), folderName); return Paths.get(caseFoldersPath.toString(), folderName);
} }
/**
* Supress creation of instances of this class.
*/
private PathUtils() {
}
private static class CaseFolderFilter implements FilenameFilter { private static class CaseFolderFilter implements FilenameFilter {
private final String caseName; private final String caseName;
@ -152,28 +126,37 @@ final class PathUtils {
@Override @Override
public boolean accept(File folder, String fileName) { public boolean accept(File folder, String fileName) {
File file = new File(folder, fileName); File file = new File(folder, fileName);
if (file.isDirectory() && fileName.length() > TimeStampUtils.getTimeStampLength()) { if (fileName.length() > TimeStampUtils.getTimeStampLength() && file.isDirectory()) {
Path filePath = Paths.get(file.getPath());
if (TimeStampUtils.endsWithTimeStamp(fileName)) { if (TimeStampUtils.endsWithTimeStamp(fileName)) {
if (null != caseName) { if (null != caseName) {
String fileNamePrefix = fileName.substring(0, fileName.length() - TimeStampUtils.getTimeStampLength()); String fileNamePrefix = fileName.substring(0, fileName.length() - TimeStampUtils.getTimeStampLength());
if (fileNamePrefix.equals(caseName)) { if (fileNamePrefix.equals(caseName)) {
return hasCaseMetadataFile(filePath); return hasCaseMetadataFile(file);
} }
} else { } else {
return hasCaseMetadataFile(filePath); return hasCaseMetadataFile(file);
} }
} }
} }
return false; return false;
} }
}
/** /**
* Supress creation of instances of this class. * Determines whether or not there is a case metadata file in a given
* folder.
*
* @param folder The file object representing the folder to search.
*
* @return True or false.
*/ */
private PathUtils() { private static boolean hasCaseMetadataFile(File folder) {
for (File file : folder.listFiles()) {
if (file.getName().toLowerCase().endsWith(CASE_METADATA_EXT) && file.isFile()) {
return true;
}
}
return false;
} }
} }
}