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Enhancements for PNG-BRUH Converter: Improved UX, Error Handling, and Unique Temp Files #12

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Enhancements for PNG-BRUH Converter: Improved UX, Error Handling, and Unique Temp Files #12

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214 changes: 90 additions & 124 deletions main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,121 +2,82 @@

use eframe::egui;
use egui_extras::RetainedImage;

extern crate css_color_parser;

use colors_transform::Rgb;
use image;
use image::GenericImageView;
use std::{
env,
fs::{self, OpenOptions},
io::Write,
path::PathBuf,
};

use skia_safe::{
AlphaType, Color4f, ColorType, EncodedImageFormat, ImageInfo, Paint, Rect, Surface,
};

use image::{self, GenericImageView};
use skia_safe::{AlphaType, Color4f, ColorType, EncodedImageFormat, ImageInfo, Paint, Rect, Surface};
use css_color_parser::Color as CssColor;
use uuid::Uuid;
use std::{env, fs, io::{self, Write}, path::PathBuf};

static TEMP_RESULT_PATH: &str = "temp.png";

fn vec_to_u32_ne(bytes: &[u8]) -> u32 {
let mut result = [0u8; 4];
result.copy_from_slice(bytes);
u32::from_ne_bytes(result)
/// Generates a unique temporary file path
fn generate_temp_file_path() -> PathBuf {
let uuid = Uuid::new_v4();
PathBuf::from(format!("temp_{}.png", uuid))
}

fn png_to_bruh(path: PathBuf) -> Result<(), std::io::Error> {
let img = image::open(&path).expect("File not found!");
let mut str = String::new();
/// Converts a PNG file to a `.bruh` format
fn png_to_bruh(path: PathBuf) -> io::Result<()> {
let img = image::open(&path).map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid image file"))?;
let mut result = String::new();
let mut last_line = 0;

for pixel in img.pixels() {
let hex_color = Rgb::from(
pixel.2 .0[0] as f32,
pixel.2 .0[1] as f32,
pixel.2 .0[2] as f32,
)
let hex_color = Rgb::from(pixel.2 .0[0] as f32, pixel.2 .0[1] as f32, pixel.2 .0[2] as f32)
.to_css_hex_string();

if last_line != pixel.1 {
str.push_str("\n");
result.push('\n');
last_line = pixel.1;
}
str.push_str(&hex_color.replace("#", ""));
result.push_str(&hex_color.replace('#', ""));
}

if let Some(path_str) = &path.to_str() {
let height: u32 = img.height();
let width: u32 = img.width();

let height_bytes: [u8; 4] = height.to_ne_bytes();
let width_bytes: [u8; 4] = width.to_ne_bytes();
let path_to_bruh = path_str.replace(".png", ".bruh");

let mut file = OpenOptions::new()
.write(true)
.create(true)
.open(path_to_bruh)
.expect("Couldnt write");
let string_bytes: Vec<u8> = Vec::from(str.as_bytes());

file.write_all(&width_bytes).unwrap();
file.write_all(&height_bytes).unwrap();
file.write_all(&string_bytes).unwrap();
file.flush().unwrap();
} else {
println!("{}", "couldn't find")
}
let height = img.height();
let width = img.width();

Ok(())
}
let height_bytes = height.to_ne_bytes();
let width_bytes = width.to_ne_bytes();

fn bruh_to_png(path: PathBuf) -> (u32, u32) {
let mut contents: Vec<u8> = fs::read(&path).expect("Couldn't read file.");
let binding: Vec<_> = contents.drain(0..8).collect();
let path_to_bruh = path.with_extension("bruh");
let mut file = fs::File::create(&path_to_bruh)?;

let width = vec_to_u32_ne(&binding[0..4]);
let height = vec_to_u32_ne(&binding[4..8]);
file.write_all(&width_bytes)?;
file.write_all(&height_bytes)?;
file.write_all(result.as_bytes())?;

let sanitized_content = String::from_utf8_lossy(&contents).replace("\n", "");
println!("Successfully converted PNG to BRUH: {:?}", path_to_bruh);
Ok(())
}

let result: Vec<&str> = sanitized_content
.as_bytes()
.chunks(6)
.map(std::str::from_utf8)
.collect::<Result<_, _>>()
.expect("Invalid UTF-8 sequence in the input string");
/// Converts a `.bruh` file to a PNG and returns its dimensions
fn bruh_to_png(path: PathBuf) -> io::Result<(u32, u32, PathBuf)> {
let contents = fs::read(&path)?;
let (width_bytes, height_bytes) = contents.split_at(4);
let width = u32::from_ne_bytes(width_bytes.try_into().unwrap());
let height = u32::from_ne_bytes(height_bytes[0..4].try_into().unwrap());

let color_data = &contents[8..];
let sanitized_content = String::from_utf8_lossy(color_data).replace("\n", "");
let colors: Vec<&str> = sanitized_content.as_bytes()
.chunks(6)
.map(std::str::from_utf8)
.collect::<Result<_, _>>()
.map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid BRUH file format"))?;

let info = ImageInfo::new(
(width as i32, height as i32),
ColorType::RGBA8888,
AlphaType::Opaque,
None,
ColorType::RGBA8888,
AlphaType::Opaque,
None,
);

let mut surface = Surface::new_raster(&info, None, None).unwrap();
let canvas = surface.canvas();

for (i, color) in result.iter().enumerate() {
let hex = "#".to_owned() + color;

let parsed_color = hex
.parse::<CssColor>()
.expect("Failed to convert Hex to RGB");
let color4f = Color4f::new(
parsed_color.r as f32,
parsed_color.g as f32,
parsed_color.b as f32,
0.004 as f32,
);
for (i, color) in colors.iter().enumerate() {
let hex = format!("#{}", color);
let parsed_color = hex.parse::<CssColor>().map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid color"))?;
let color4f = Color4f::new(parsed_color.r as f32, parsed_color.g as f32, parsed_color.b as f32, 1.0);
let paint = Paint::new(color4f, None);
if i == 0 {
println!("{:?}", paint)
}

let x = i % width as usize;
let y = i / width as usize;

Expand All @@ -125,59 +86,64 @@ fn bruh_to_png(path: PathBuf) -> (u32, u32) {
}

let image = surface.image_snapshot();

let temp_file_path = generate_temp_file_path();
if let Some(data) = image.encode(None, EncodedImageFormat::PNG, 100) {
fs::write(TEMP_RESULT_PATH, &*data).expect("Failed to write image data to file");
fs::write(&temp_file_path, &*data)?;
}

return (width, height);
Ok((width, height, temp_file_path))
}

fn main() -> Result<(), eframe::Error> {
/// Main application
fn main() -> Result<(), Box<dyn std::error::Error>> {
let args: Vec<String> = env::args().collect();
let file_path: PathBuf = (&args[1]).into();

if &args[1] == "compile" {
if args.len() < 3 {
panic!("Secondary argument ('path') not provided. Example: `cargo run compile ~/image.png`")
}

let path: PathBuf = (&args[2]).into();
if args.len() < 2 {
println!("Usage:");
println!(" To compile PNG to BRUH: `cargo run compile <image.png>`");
println!(" To preview BRUH file: `cargo run <file.bruh>`");
return Ok(());
}

match png_to_bruh(path) {
Ok(()) => println!("{}", "Successfully converted PNG to BRUH"),
Err(_) => println!("{}", "Failed to convert PNG to BRUH"),
match args[1].as_str() {
"compile" => {
if args.len() < 3 {
println!("Please provide a valid PNG file path.");
return Ok(());
}
png_to_bruh(PathBuf::from(&args[2]))?;
}
_ => {
let (width, height, temp_file) = bruh_to_png(PathBuf::from(&args[1]))?;
let options = eframe::NativeOptions {
resizable: false,
initial_window_size: Some(egui::vec2(width as f32, height as f32)),
..Default::default()
};
if let Err(e) = eframe::run_native(
"Image preview",
options,
Box::new(|_cc| Box::new(ImagePreview::new(temp_file))),
) {
eprintln!("An error occurred: {}", e);
}

Ok(())
} else {
let (width, height) = bruh_to_png(file_path);
println!("{} {}", width, height);
let options = eframe::NativeOptions {
resizable: false,
initial_window_size: Some(egui::vec2(width as f32, height as f32)),
..Default::default()
};

eframe::run_native(
"Image preview",
options,
Box::new(|_cc| Box::<ImagePreview>::default()),
)
}
}
Ok(())
}

/// Image preview struct for eframe
struct ImagePreview {
image: RetainedImage,
}

impl Default for ImagePreview {
fn default() -> Self {
let image_data = std::fs::read(TEMP_RESULT_PATH).expect("Failed to read image file");

fs::remove_file(TEMP_RESULT_PATH).expect("File delete failed on TEMP_RESULT_PATH");

impl ImagePreview {
fn new(temp_file: PathBuf) -> Self {
let image_data = fs::read(&temp_file).expect("Failed to read temp image file");
fs::remove_file(temp_file).expect("Failed to delete temp file");
Self {
image: RetainedImage::from_image_bytes(TEMP_RESULT_PATH, &image_data).unwrap(),
image: RetainedImage::from_image_bytes("temp_image", &image_data).unwrap(),
}
}
}
Expand Down