Examples with Charset java.nio.charset.Charset used on opensource projects

Example 76 with Charset

use of java.nio.charset.Charset in project intellij-community by JetBrains.

the class DiffContentFactoryImpl method guessCharsetFromContent.

@Nullable
private static Charset guessCharsetFromContent(@NotNull byte[] content) {
    // can't use CharsetToolkit.guessEncoding here because of false-positive INVALID_UTF8
    CharsetToolkit toolkit = new CharsetToolkit(content);
    Charset fromBOM = toolkit.guessFromBOM();
    if (fromBOM != null)
        return fromBOM;
    CharsetToolkit.GuessedEncoding guessedEncoding = toolkit.guessFromContent(content.length);
    switch(guessedEncoding) {
        case SEVEN_BIT:
            return Charset.forName("US-ASCII");
        case VALID_UTF8:
            return CharsetToolkit.UTF8_CHARSET;
        default:
            return null;
    }
}

Example 77 with Charset

use of java.nio.charset.Charset in project intellij-community by JetBrains.

the class ChangeFileEncodingAction method chosen.

// returns true if charset was changed, false if failed
protected boolean chosen(final Document document, final Editor editor, @Nullable final VirtualFile virtualFile, byte[] bytes, @NotNull final Charset charset) {
    if (virtualFile == null)
        return false;
    String text = document.getText();
    EncodingUtil.Magic8 isSafeToConvert = EncodingUtil.isSafeToConvertTo(virtualFile, text, bytes, charset);
    EncodingUtil.Magic8 isSafeToReload = EncodingUtil.isSafeToReloadIn(virtualFile, text, bytes, charset);
    final Project project = ProjectLocator.getInstance().guessProjectForFile(virtualFile);
    final Charset oldCharset = virtualFile.getCharset();
    final Runnable undo;
    final Runnable redo;
    if (isSafeToConvert == EncodingUtil.Magic8.ABSOLUTELY && isSafeToReload == EncodingUtil.Magic8.ABSOLUTELY) {
        //change and forget
        undo = () -> EncodingManager.getInstance().setEncoding(virtualFile, oldCharset);
        redo = () -> EncodingManager.getInstance().setEncoding(virtualFile, charset);
    } else {
        IncompatibleEncodingDialog dialog = new IncompatibleEncodingDialog(virtualFile, charset, isSafeToReload, isSafeToConvert);
        dialog.show();
        if (dialog.getExitCode() == IncompatibleEncodingDialog.RELOAD_EXIT_CODE) {
            undo = () -> EncodingUtil.reloadIn(virtualFile, oldCharset);
            redo = () -> EncodingUtil.reloadIn(virtualFile, charset);
        } else if (dialog.getExitCode() == IncompatibleEncodingDialog.CONVERT_EXIT_CODE) {
            undo = () -> EncodingUtil.saveIn(document, editor, virtualFile, oldCharset);
            redo = () -> EncodingUtil.saveIn(document, editor, virtualFile, charset);
        } else {
            return false;
        }
    }
    final UndoableAction action = new GlobalUndoableAction(virtualFile) {

        @Override
        public void undo() {
            // invoke later because changing document inside undo/redo is not allowed
            Application application = ApplicationManager.getApplication();
            application.invokeLater(undo, ModalityState.NON_MODAL, (project == null ? application : project).getDisposed());
        }

        @Override
        public void redo() {
            // invoke later because changing document inside undo/redo is not allowed
            Application application = ApplicationManager.getApplication();
            application.invokeLater(redo, ModalityState.NON_MODAL, (project == null ? application : project).getDisposed());
        }
    };
    redo.run();
    CommandProcessor.getInstance().executeCommand(project, () -> {
        UndoManager undoManager = project == null ? UndoManager.getGlobalInstance() : UndoManager.getInstance(project);
        undoManager.undoableActionPerformed(action);
    }, "Change encoding for '" + virtualFile.getName() + "'", null, UndoConfirmationPolicy.REQUEST_CONFIRMATION);
    return true;
}

Example 78 with Charset

use of java.nio.charset.Charset in project intellij-community by JetBrains.

the class ChooseFileEncodingAction method fillCharsetActions.

private void fillCharsetActions(@NotNull DefaultActionGroup group, @Nullable final VirtualFile virtualFile, @NotNull List<Charset> charsets, @NotNull final Function<Charset, String> charsetFilter) {
    for (final Charset charset : charsets) {
        AnAction action = new DumbAwareAction(charset.displayName(), null, EmptyIcon.ICON_16) {

            @Override
            public void actionPerformed(AnActionEvent e) {
                chosen(virtualFile, charset);
            }

            @Override
            public void update(AnActionEvent e) {
                super.update(e);
                String description = charsetFilter.fun(charset);
                e.getPresentation().setIcon(description == null ? AllIcons.General.Warning : null);
                e.getPresentation().setDescription(description);
            }
        };
        group.add(action);
    }
}

Example 79 with Charset

use of java.nio.charset.Charset in project intellij-community by JetBrains.

the class EncodingManagerImpl method handleDocument.

private void handleDocument(@NotNull final Document document) {
    if (document.getUserData(DETECTING_ENCODING_KEY) == null)
        return;
    try {
        VirtualFile virtualFile = FileDocumentManager.getInstance().getFile(document);
        if (virtualFile == null)
            return;
        Project project = guessProject(virtualFile);
        if (project != null && project.isDisposed())
            return;
        Charset charset = LoadTextUtil.charsetFromContentOrNull(project, virtualFile, document.getImmutableCharSequence());
        Charset oldCached = getCachedCharsetFromContent(document);
        if (!Comparing.equal(charset, oldCached)) {
            setCachedCharsetFromContent(charset, oldCached, document);
        }
    } finally {
        document.putUserData(DETECTING_ENCODING_KEY, null);
    }
}

Example 80 with Charset

use of java.nio.charset.Charset in project intellij-community by JetBrains.

the class EncodingManagerImpl method computeCharsetFromContent.

@Nullable("returns null if charset set cannot be determined from content")
Charset computeCharsetFromContent(@NotNull final VirtualFile virtualFile) {
    final Document document = FileDocumentManager.getInstance().getDocument(virtualFile);
    if (document == null) {
        return null;
    }
    Charset cached = EncodingManager.getInstance().getCachedCharsetFromContent(document);
    if (cached != null) {
        return cached;
    }
    final Project project = ProjectLocator.getInstance().guessProjectForFile(virtualFile);
    return ReadAction.compute(() -> {
        Charset charsetFromContent = LoadTextUtil.charsetFromContentOrNull(project, virtualFile, document.getImmutableCharSequence());
        if (charsetFromContent != null) {
            setCachedCharsetFromContent(charsetFromContent, null, document);
        }
        return charsetFromContent;
    });
}