public static void setDetectedFromBytesFlagBack(
@NotNull VirtualFile virtualFile, @NotNull byte[] content) {
if (virtualFile.getBOM() == null) {
guessFromContent(virtualFile, content, content.length);
} else {
// prevent file to be reloaded in other encoding after save with BOM
setCharsetWasDetectedFromBytes(virtualFile, AUTO_DETECTED_FROM_BOM);
}
}
@NotNull
private static Pair.NonNull<Charset, byte[]> charsetForWriting(
@Nullable Project project,
@NotNull VirtualFile virtualFile,
@NotNull String text,
@NotNull Charset existing) {
Charset specified = extractCharsetFromFileContent(project, virtualFile, text);
Pair.NonNull<Charset, byte[]> chosen = chooseMostlyHarmlessCharset(existing, specified, text);
Charset charset = chosen.first;
// in case of "UTF-16", OutputStreamWriter sometimes adds BOM on it's own.
// see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6800103
byte[] bom = virtualFile.getBOM();
Charset fromBom = bom == null ? null : CharsetToolkit.guessFromBOM(bom);
if (fromBom != null && !fromBom.equals(charset)) {
chosen = Pair.createNonNull(fromBom, toBytes(text, fromBom));
}
return chosen;
}
private static void checkFileLoadedInWrongEncoding(
PsiFile file,
InspectionManager manager,
boolean isOnTheFly,
VirtualFile virtualFile,
Charset charset,
List<ProblemDescriptor> descriptors) {
if (FileDocumentManager.getInstance()
.isFileModified(virtualFile) // when file is modified, it's too late to reload it
|| ChooseFileEncodingAction.isEnabledAndWhyNot(virtualFile)
!= null // can't reload in another encoding, no point trying
) {
return;
}
// check if file was loaded in correct encoding
byte[] bytes;
try {
bytes = virtualFile.contentsToByteArray();
} catch (IOException e) {
return;
}
String separator =
FileDocumentManager.getInstance().getLineSeparator(virtualFile, file.getProject());
String toSave = StringUtil.convertLineSeparators(file.getText(), separator);
byte[] bom = virtualFile.getBOM();
byte[] bytesToSave =
ArrayUtil.mergeArrays(
bom == null ? ArrayUtil.EMPTY_BYTE_ARRAY : bom, toSave.getBytes(charset));
if (!Arrays.equals(bytesToSave, bytes)) {
descriptors.add(
manager.createProblemDescriptor(
file,
"File was loaded in a wrong encoding: '" + charset + "'",
RELOAD_ENCODING_FIX,
ProblemHighlightType.GENERIC_ERROR,
isOnTheFly));
}
}