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package org.editorconfig.configmanagement;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileEditor.FileDocumentManagerAdapter;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.encoding.EncodingProjectManager;
import org.editorconfig.Utils;
import org.editorconfig.core.EditorConfig.OutPair;
import org.editorconfig.plugincomponents.SettingsProviderComponent;
import org.jetbrains.annotations.NotNull;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class EncodingManager extends FileDocumentManagerAdapter {
// Handles the following EditorConfig settings:
private static final String charsetKey = "charset";
private final Logger LOG = Logger.getInstance("#org.editorconfig.codestylesettings.EncodingManager");
private final Project project;
private static final Map<String, Charset> encodingMap;
static {
Map<String, Charset> map = new HashMap<String, Charset>();
map.put("latin1", Charset.forName("ISO-8859-1"));
map.put("utf-8", Charset.forName("UTF-8"));
map.put("utf-16be", Charset.forName("UTF-16BE"));
map.put("utf-16le", Charset.forName("UTF-16LE"));
encodingMap = Collections.unmodifiableMap(map);
}
private boolean isApplyingSettings;
public EncodingManager(Project project) {
this.project = project;
isApplyingSettings = false;
}
@Override
public void beforeDocumentSaving(@NotNull Document document) {
final VirtualFile file = FileDocumentManager.getInstance().getFile(document);
if (!isApplyingSettings) {
applySettings(file);
}
}
private void applySettings(VirtualFile file) {
if (file == null || !file.isInLocalFileSystem()) return;
// Prevent "setEncoding" calling "saveAll" from causing an endless loop
isApplyingSettings = true;
final String filePath = file.getCanonicalPath();
final List<OutPair> outPairs = SettingsProviderComponent.getInstance().getOutPairs(filePath);
final EncodingProjectManager encodingProjectManager = EncodingProjectManager.getInstance(project);
final String charset = Utils.configValueForKey(outPairs, charsetKey);
if (!charset.isEmpty()) {
if (encodingMap.containsKey(charset)) {
encodingProjectManager.setEncoding(file, encodingMap.get(charset));
LOG.debug(Utils.appliedConfigMessage(charset, charsetKey, filePath));
}
else {
LOG.warn(Utils.invalidConfigMessage(charset, charsetKey, filePath));
}
}
isApplyingSettings = false;
}
}
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