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package eu.dnetlib.download.plugin;
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import java.io.File;
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import java.io.FileFilter;
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import java.util.*;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* The Class PathRetreiver.
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*/
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public class PathRetreiver {
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private static final Log log = LogFactory.getLog(PathRetreiver.class);
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/** The instance. */
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private static PathRetreiver instance;
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/**
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* Gets the single instance of PathRetreiver.
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*
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* @param base_path
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* the base_path
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* @return single instance of PathRetreiver
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*/
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public static PathRetreiver getInstance(final String base_path) {
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if (instance == null) {
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instance = new PathRetreiver();
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instance.setBase_path(base_path);
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}
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return instance;
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}
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/** The base_path. */
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private String base_path;
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/** The values. */
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private TreeMap<Integer, InfoPath> values;
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/**
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* Bootstrap.
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*/
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private void bootstrap() {
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values = new TreeMap<>();
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File basePath = new File(this.base_path);
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File[] selectedFiles = basePath.listFiles(pathname -> pathname.isDirectory());
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for (File f : selectedFiles) {
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String lower = StringUtils.substringAfter(StringUtils.substringBefore(f.getName(), "_"), "PMC");
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String upper = StringUtils.substringAfter(StringUtils.substringAfter(f.getName(), "_"), "PMC");
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String path = f.getPath();
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InfoPath i = new InfoPath();
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i.setLower(Integer.parseInt(lower));
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i.setUpper(Integer.parseInt(upper));
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i.setPath(path);
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values.put(i.getLower(), i);
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}
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if (log.isDebugEnabled()) {
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for (InfoPath p : values.values()) {
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log.debug(String.format("%s -- %s : %s", p.getLower(), p.getUpper(), p.getPath()));
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}
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}
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}
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/**
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* Gets the path for pmcid.
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*
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* @param pmcID
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* the pmc id
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* @return the path for pmcid
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*/
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public String getPathForPMCID(final int pmcID) {
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if (values == null) {
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bootstrap();
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}
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Map.Entry<Integer, InfoPath> infoPath = values.floorEntry(pmcID);
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if (infoPath != null) {
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final String currentPath = infoPath.getValue().getPath() + "/" + pmcID + ".xml";
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final File f = new File(currentPath);
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log.debug(String.format("try to search in path %s", currentPath));
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String s = null;
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if (f.exists()) {
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s = f.getPath();
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log.debug(String.format("found in %s", s));
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} else {
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log.debug(String.format("not found in %s", s));
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}
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return s;
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}
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log.debug(String.format("PMC with ID: %s not found", pmcID));
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return null;
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}
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/**
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* Sets the base_path.
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*
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* @param base_path
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* the new base_path
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*/
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public void setBase_path(final String base_path) {
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this.base_path = base_path;
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}
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/**
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* Gets the base_path.
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*
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* @return the base_path
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*/
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public String getBase_path() {
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return this.base_path;
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}
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}
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