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|
use std::{convert::TryInto, fs::File, io::Write, path::Path};
use gifed::{
block::{extension::GraphicControl, Block, ColorTable, IndexedImage, Version},
reader::GifReader,
writer::{GifBuilder, ImageBuilder},
Color,
};
use owo_colors::OwoColorize;
fn main() {
let file = if let Some(file) = std::env::args().skip(1).next() {
file
} else {
println!("usage: gifprobe file.gif");
return;
};
let gif = GifReader::file(&file).unwrap();
println!("Version {}", gif.header.yellow());
println!(
"Logical Screen Descriptor\n\tDimensions {}x{}",
gif.screen_descriptor.width.yellow(),
gif.screen_descriptor.height.yellow()
);
if gif.screen_descriptor.color_table_present() {
println!(
"\tGlobal Color Table Present {}\n\tGlobal Color Table Size {}",
"Yes".green(),
gif.screen_descriptor.color_table_len().green()
);
} else {
println!(
"\tGlobal Color Table Present {}\n\tGlobal Color Table Size {}",
"No".red(),
gif.screen_descriptor.color_table_len().red()
);
}
let mut img_count = 0;
let mut hundreths: usize = 0;
for block in gif.blocks {
match block {
Block::IndexedImage(img) => {
describe_image(&img);
img_count += 1;
}
Block::GraphicControlExtension(gce) => {
hundreths += gce.delay() as usize;
let dispose_string = if let Some(dispose) = gce.disposal_method() {
dispose.to_string()
} else {
String::from("Reserved Value!");
format!("Reserved: {:b}", gce.packed().disposal_method())
};
println!(
"Graphic Control Extension\n\tDelay Time {}\n\tDispose {}",
format!("{}s", gce.delay() as f32 / 100.0).yellow(),
dispose_string.yellow()
)
}
Block::LoopingExtension(_) => todo!(),
Block::CommentExtension(cmt) => {
println!("Comment Extension\n\tLength {}", cmt.len().yellow());
match String::from_utf8(cmt) {
Ok(cmt) => println!("\tString \"{}\"", cmt.yellow()),
Err(_) => println!("\tString {}", "Content is not utf8".red()),
}
}
Block::ApplicationExtension(app) => {
let auth = app.authentication_code();
let app_ident = String::from_utf8_lossy(app.identifier());
println!(
"Application Extension\n\tIdentifier {}\n\tAuthentication {:02X} {:02X} {:02X}",
app_ident.yellow(),
auth[0].yellow(),
auth[1].yellow(),
auth[2].yellow()
);
if app_ident == "NETSCAPE" {
let data = app.data();
let looping = u16::from_le_bytes([data[0], data[1]]);
if looping == 0 {
println!("\tLoop {}", "forever".yellow())
} else {
println!("\tLoop {}", looping.yellow());
}
}
}
}
}
println!(
"{} is {}.{}s long and has {} frames",
file,
hundreths / 100,
hundreths % 100,
img_count
);
}
fn describe_image(bli: &IndexedImage) {
println!(
"Image\n\tOffset {}x{}\n\tDimensions {}x{}",
bli.image_descriptor.left.yellow(),
bli.image_descriptor.top.yellow(),
bli.image_descriptor.width.yellow(),
bli.image_descriptor.height.yellow(),
);
if bli.image_descriptor.color_table_present() {
println!(
"\tLocal Color Table Present {}\n\tLocal Color Table Size {}",
"Yes".green(),
bli.image_descriptor.color_table_size().green()
);
} else {
println!(
"\tLocal Color Table Present {}\n\tLocal Color Table Size {}",
"No".red(),
bli.image_descriptor.color_table_size().red()
);
}
}
|
