Task 649: .SDNN File Format
Task 649: .SDNN File Format
Investigation into the .SDNN File Format
As a programmer tasked with developing code for the .SDNN file format, I conducted an extensive search across web resources, including general search engines, Wikipedia's list of file extensions, and targeted queries for associated software such as "Story Distiller." The results indicate that the .SDNN extension appears in a single entry on Wikipedia, described as an "Encrypted Story Distiller Nursery Notes Database" used by "Story Distiller" or "Series Distiller." However, no verifiable software by these names utilizes this format, and no public documentation, specifications, or examples were located. "Story Distiller" refers to a modern screenwriting tool (storydistiller.com), but its documentation does not mention .SDNN or any proprietary file formats beyond standard exports like .fdx or .pdf. This suggests the Wikipedia entry may be unsubstantiated or erroneous.
Without accessible specifications, it is not possible to accurately decode, read, or write .SDNN files. Below, I address each task component based on this finding.
List of Properties Intrinsic to Its File System
No properties could be identified due to the absence of format specifications. A typical file format's intrinsic properties might include header structure, encryption method, data chunk layout, metadata fields (e.g., version, checksum), and endianness. For .SDNN, these remain undefined in public sources.
Two Direct Download Links for .SDNN Files
No sample .SDNN files were found. Searches for downloads yielded no results, as the format lacks documented existence or distribution.
Ghost Blog Embedded HTML JavaScript for Drag-and-Drop Parsing
Without specifications, a functional parser cannot be implemented. Below is a placeholder HTML/JavaScript snippet for Ghost (a blogging platform) that handles drag-and-drop of any file, reads its binary content as a hex dump, and displays it. This could serve as a starting point if specifications become available. Embed it in a Ghost post using the HTML card.
This displays a basic hex representation but cannot extract specific properties.
Python Class for Reading/Writing .SDNN Files
Without specifications, decoding is infeasible. The following class provides a skeleton that reads the file as binary, prints a hex summary to console, and includes stubs for read/write methods. It uses the struct module for potential future binary parsing.
import struct
import os
class SDNNFile:
def __init__(self, filepath):
self.filepath = filepath
self.data = None
self.properties = {} # Placeholder for properties
def read(self):
if not os.path.exists(self.filepath):
print("Error: File not found.")
return
with open(self.filepath, 'rb') as f:
self.data = f.read()
self._parse_properties() # Stub for parsing
self._print_properties()
def _parse_properties(self):
# Placeholder: Without specs, cannot parse.
# Example stub: Assume a simple header (version: 4 bytes, size: 4 bytes).
if len(self.data) >= 8:
version = struct.unpack('>I', self.data[:4])[0]
size = struct.unpack('>I', self.data[4:8])[0]
self.properties = {'version': version, 'declared_size': size}
else:
self.properties = {'error': 'File too short for header'}
def _print_properties(self):
print("SDNN File Properties:")
for key, value in self.properties.items():
print(f" {key}: {value}")
print(f" Raw size: {len(self.data) if self.data else 0} bytes")
def write(self, output_path, properties=None):
# Stub: Write raw data or modified version.
if self.data:
with open(output_path, 'wb') as f:
f.write(self.data)
print(f"Written to {output_path}")
else:
print("Error: No data to write.")
# Usage example
if __name__ == "__main__":
sdnn = SDNNFile("example.sdnn")
sdnn.read()
sdnn.write("output.sdnn")
Java Class for Reading/Writing .SDNN Files
Similarly, a skeleton class is provided, using ByteBuffer for binary handling and printing to console.
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.Map;
public class SDNNFile {
private String filepath;
private byte[] data;
private Map<String, Object> properties = new HashMap<>();
public SDNNFile(String filepath) {
this.filepath = filepath;
}
public void read() {
File file = new File(filepath);
if (!file.exists()) {
System.out.println("Error: File not found.");
return;
}
try (RandomAccessFile raf = new RandomAccessFile(file, "r");
FileChannel channel = raf.getChannel()) {
ByteBuffer buffer = ByteBuffer.allocate((int) channel.size());
channel.read(buffer);
data = buffer.array();
parseProperties();
printProperties();
} catch (IOException e) {
System.err.println("Read error: " + e.getMessage());
}
}
private void parseProperties() {
// Placeholder: Assume simple header.
if (data.length >= 8) {
int version = ByteBuffer.wrap(data, 0, 4).getInt();
int size = ByteBuffer.wrap(data, 4, 4).getInt();
properties.put("version", version);
properties.put("declared_size", size);
} else {
properties.put("error", "File too short for header");
}
}
private void printProperties() {
System.out.println("SDNN File Properties:");
properties.forEach((k, v) -> System.out.println(" " + k + ": " + v));
System.out.println(" Raw size: " + (data != null ? data.length : 0) + " bytes");
}
public void write(String outputPath) {
if (data != null) {
try (FileOutputStream fos = new FileOutputStream(outputPath)) {
fos.write(data);
System.out.println("Written to " + outputPath);
} catch (IOException e) {
System.err.println("Write error: " + e.getMessage());
}
} else {
System.out.println("Error: No data to write.");
}
}
public static void main(String[] args) {
SDNNFile sdnn = new SDNNFile("example.sdnn");
sdnn.read();
sdnn.write("output.sdnn");
}
}
JavaScript Class for Reading/Writing .SDNN Files
Node.js-oriented class using fs module. For browser use, adapt with File API. Prints to console.
const fs = require('fs');
const { Buffer } = require('buffer');
class SDNNFile {
constructor(filepath) {
this.filepath = filepath;
this.data = null;
this.properties = {};
}
read() {
if (!fs.existsSync(this.filepath)) {
console.log('Error: File not found.');
return;
}
this.data = fs.readFileSync(this.filepath);
this.parseProperties();
this.printProperties();
}
parseProperties() {
// Placeholder: Assume simple header (big-endian uint32).
if (this.data.length >= 8) {
const version = this.data.readUInt32BE(0);
const size = this.data.readUInt32BE(4);
this.properties = { version, declared_size: size };
} else {
this.properties = { error: 'File too short for header' };
}
}
printProperties() {
console.log('SDNN File Properties:');
Object.entries(this.properties).forEach(([key, value]) => {
console.log(` ${key}: ${value}`);
});
console.log(` Raw size: ${this.data ? this.data.length : 0} bytes`);
}
write(outputPath) {
if (this.data) {
fs.writeFileSync(outputPath, this.data);
console.log(`Written to ${outputPath}`);
} else {
console.log('Error: No data to write.');
}
}
}
// Usage
const sdnn = new SDNNFile('example.sdnn');
sdnn.read();
sdnn.write('output.sdnn');
C Class (Struct with Functions) for Reading/Writing .SDNN Files
A basic C implementation using standard I/O. Compile with gcc file.c -o sdnn. Assumes big-endian for simplicity.
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
typedef struct {
char* filepath;
uint8_t* data;
size_t data_size;
struct {
uint32_t version;
uint32_t declared_size;
} properties;
} SDNNFile;
void sdnn_read(SDNNFile* file) {
FILE* fp = fopen(file->filepath, "rb");
if (!fp) {
printf("Error: File not found.\n");
return;
}
fseek(fp, 0, SEEK_END);
file->data_size = ftell(fp);
fseek(fp, 0, SEEK_SET);
file->data = malloc(file->data_size);
fread(file->data, 1, file->data_size, fp);
fclose(fp);
// Placeholder parse
if (file->data_size >= 8) {
file->properties.version = (file->data[0] << 24) | (file->data[1] << 16) | (file->data[2] << 8) | file->data[3];
file->properties.declared_size = (file->data[4] << 24) | (file->data[5] << 16) | (file->data[6] << 8) | file->data[7];
} else {
printf(" error: File too short for header\n");
}
sdnn_print_properties(file);
}
void sdnn_print_properties(SDNNFile* file) {
printf("SDNN File Properties:\n");
printf(" version: %u\n", file->properties.version);
printf(" declared_size: %u\n", file->properties.declared_size);
printf(" Raw size: %zu bytes\n", file->data_size);
}
void sdnn_write(SDNNFile* file, const char* output_path) {
if (!file->data) {
printf("Error: No data to write.\n");
return;
}
FILE* fp = fopen(output_path, "wb");
if (fp) {
fwrite(file->data, 1, file->data_size, fp);
fclose(fp);
printf("Written to %s\n", output_path);
} else {
printf("Write error.\n");
}
}
void sdnn_free(SDNNFile* file) {
free(file->data);
free(file->filepath);
}
int main() {
SDNNFile file = {strdup("example.sdnn"), NULL, 0, {0, 0}};
sdnn_read(&file);
sdnn_write(&file, "output.sdnn");
sdnn_free(&file);
return 0;
}
These implementations include placeholder parsing assuming a minimal header structure for illustration. To proceed meaningfully, obtaining official specifications from the purported software developer is recommended. If additional details or alternative interpretations of .SDNN are available, please provide them for refinement.