@NotNull
public static IpnbFile parseIpnbFile(
@NotNull final CharSequence fileText, @NotNull final VirtualFile virtualFile)
throws IOException {
final String path = virtualFile.getPath();
IpnbFileRaw rawFile = gson.fromJson(fileText.toString(), IpnbFileRaw.class);
if (rawFile == null) {
int nbformat = isIpythonNewFormat(virtualFile) ? 4 : 3;
return new IpnbFile(Collections.emptyMap(), nbformat, Lists.newArrayList(), path);
}
List<IpnbCell> cells = new ArrayList<IpnbCell>();
final IpnbWorksheet[] worksheets = rawFile.worksheets;
if (worksheets == null) {
for (IpnbCellRaw rawCell : rawFile.cells) {
cells.add(rawCell.createCell());
}
} else {
for (IpnbWorksheet worksheet : worksheets) {
final List<IpnbCellRaw> rawCells = worksheet.cells;
for (IpnbCellRaw rawCell : rawCells) {
cells.add(rawCell.createCell());
}
}
}
return new IpnbFile(rawFile.metadata, rawFile.nbformat, cells, path);
}
@Nullable
public static String newDocumentText(@NotNull final IpnbFilePanel ipnbPanel) {
final IpnbFile ipnbFile = ipnbPanel.getIpnbFile();
if (ipnbFile == null) return null;
for (IpnbEditablePanel panel : ipnbPanel.getIpnbPanels()) {
if (panel.isModified()) {
panel.updateCellSource();
}
}
final IpnbFileRaw fileRaw = new IpnbFileRaw();
fileRaw.metadata = ipnbFile.getMetadata();
if (ipnbFile.getNbformat() == 4) {
for (IpnbCell cell : ipnbFile.getCells()) {
fileRaw.cells.add(IpnbCellRaw.fromCell(cell, ipnbFile.getNbformat()));
}
} else {
final IpnbWorksheet worksheet = new IpnbWorksheet();
worksheet.cells.clear();
for (IpnbCell cell : ipnbFile.getCells()) {
worksheet.cells.add(IpnbCellRaw.fromCell(cell, ipnbFile.getNbformat()));
}
fileRaw.worksheets = new IpnbWorksheet[] {worksheet};
}
final StringWriter stringWriter = new StringWriter();
final JsonWriter writer = new JsonWriter(stringWriter);
writer.setIndent(" ");
gson.toJson(fileRaw, fileRaw.getClass(), writer);
return stringWriter.toString();
}
@Override
public IpnbCellRaw deserialize(
JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
final JsonObject object = json.getAsJsonObject();
final IpnbCellRaw cellRaw = new IpnbCellRaw();
final JsonElement cell_type = object.get("cell_type");
if (cell_type != null) {
cellRaw.cell_type = cell_type.getAsString();
}
final JsonElement count = object.get("execution_count");
if (count != null) {
cellRaw.execution_count = count.isJsonNull() ? null : count.getAsInt();
}
final JsonElement metadata = object.get("metadata");
if (metadata != null) {
cellRaw.metadata = gson.fromJson(metadata, Map.class);
}
final JsonElement level = object.get("level");
if (level != null) {
cellRaw.level = level.getAsInt();
}
final JsonElement outputsElement = object.get("outputs");
if (outputsElement != null) {
final JsonArray outputs = outputsElement.getAsJsonArray();
cellRaw.outputs = Lists.newArrayList();
for (JsonElement output : outputs) {
cellRaw.outputs.add(gson.fromJson(output, CellOutputRaw.class));
}
}
cellRaw.source = getStringOrArray("source", object);
cellRaw.input = getStringOrArray("input", object);
final JsonElement language = object.get("language");
if (language != null) {
cellRaw.language = language.getAsString();
}
final JsonElement number = object.get("prompt_number");
if (number != null) {
cellRaw.prompt_number = number.getAsInt();
}
return cellRaw;
}
public static IpnbCellRaw fromCell(@NotNull final IpnbCell cell, int nbformat) {
final IpnbCellRaw raw = new IpnbCellRaw();
if (cell instanceof IpnbEditableCell) {
raw.metadata = ((IpnbEditableCell) cell).getMetadata();
}
if (cell instanceof IpnbMarkdownCell) {
raw.cell_type = "markdown";
raw.source = ((IpnbMarkdownCell) cell).getSource();
} else if (cell instanceof IpnbCodeCell) {
raw.cell_type = "code";
final ArrayList<CellOutputRaw> outputRaws = new ArrayList<CellOutputRaw>();
for (IpnbOutputCell outputCell : ((IpnbCodeCell) cell).getCellOutputs()) {
outputRaws.add(CellOutputRaw.fromOutput(outputCell, nbformat));
}
raw.outputs = outputRaws;
final Integer promptNumber = ((IpnbCodeCell) cell).getPromptNumber();
if (nbformat == 4) {
raw.execution_count = promptNumber != null && promptNumber >= 0 ? promptNumber : null;
raw.source = ((IpnbCodeCell) cell).getSource();
} else {
raw.prompt_number = promptNumber != null && promptNumber >= 0 ? promptNumber : null;
raw.language = ((IpnbCodeCell) cell).getLanguage();
raw.input = ((IpnbCodeCell) cell).getSource();
}
} else if (cell instanceof IpnbRawCell) {
raw.cell_type = "raw";
raw.source = ((IpnbRawCell) cell).getSource();
} else if (cell instanceof IpnbHeadingCell) {
raw.cell_type = "heading";
raw.source = ((IpnbHeadingCell) cell).getSource();
raw.level = ((IpnbHeadingCell) cell).getLevel();
}
return raw;
}