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Code Issues Packages Projects Releases Wiki Activity

Clean up some unwraps (#1147)

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This commit is contained in:
Jonathan Turner
2020-01-02 09:45:32 +13:00
committed by GitHub
parent 25298d35e4
commit aa577bf9bf
10 changed files with 183 additions and 98 deletions
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38
crates/nu_plugin_binaryview/src/main.rs
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@ -195,40 +195,32 @@ struct RawImageBuffer {
buffer: Vec<u8>,
}
fn load_from_png_buffer(buffer: &[u8]) -> Option<RawImageBuffer> {
fn load_from_png_buffer(buffer: &[u8]) -> Result<RawImageBuffer, Box<dyn std::error::Error>> {
use image::ImageDecoder;
let decoder = image::png::PNGDecoder::new(buffer);
if decoder.is_err() {
return None;
}
let decoder = decoder.unwrap();
let decoder = image::png::PNGDecoder::new(buffer)?;
let dimensions = decoder.dimensions();
let colortype = decoder.colortype();
let buffer = decoder.read_image().unwrap();
let buffer = decoder.read_image()?;
Some(RawImageBuffer {
Ok(RawImageBuffer {
dimensions,
colortype,
buffer,
})
}
fn load_from_jpg_buffer(buffer: &[u8]) -> Option<RawImageBuffer> {
fn load_from_jpg_buffer(buffer: &[u8]) -> Result<RawImageBuffer, Box<dyn std::error::Error>> {
use image::ImageDecoder;
let decoder = image::jpeg::JPEGDecoder::new(buffer);
if decoder.is_err() {
return None;
}
let decoder = decoder.unwrap();
let decoder = image::jpeg::JPEGDecoder::new(buffer)?;
let dimensions = decoder.dimensions();
let colortype = decoder.colortype();
let buffer = decoder.read_image().unwrap();
let buffer = decoder.read_image()?;
Some(RawImageBuffer {
Ok(RawImageBuffer {
dimensions,
colortype,
buffer,
@ -242,16 +234,16 @@ pub fn view_contents(
) -> Result<(), Box<dyn std::error::Error>> {
let mut raw_image_buffer = load_from_png_buffer(buffer);
if raw_image_buffer.is_none() {
if raw_image_buffer.is_err() {
raw_image_buffer = load_from_jpg_buffer(buffer);
}
if raw_image_buffer.is_none() {
if raw_image_buffer.is_err() {
//Not yet supported
outln!("{:?}", buffer.hex_dump());
return Ok(());
}
let raw_image_buffer = raw_image_buffer.unwrap();
let raw_image_buffer = raw_image_buffer?;
let mut render_context: RenderContext = RenderContext::blank(lores_mode);
let _ = render_context.update();
@ -264,7 +256,7 @@ pub fn view_contents(
raw_image_buffer.dimensions.1 as u32,
raw_image_buffer.buffer,
)
.unwrap();
.ok_or("Cannot convert image data")?;
let resized_img = image::imageops::resize(
&img,
@ -287,7 +279,7 @@ pub fn view_contents(
raw_image_buffer.dimensions.1 as u32,
raw_image_buffer.buffer,
)
.unwrap();
.ok_or("Cannot convert image data")?;
let resized_img = image::imageops::resize(
&img,
@ -374,8 +366,8 @@ pub fn view_contents_interactive(
let image_buffer = nes.image_buffer();
let slice = unsafe { std::slice::from_raw_parts(image_buffer, 256 * 240 * 4) };
let img =
image::ImageBuffer::<image::Rgba<u8>, &[u8]>::from_raw(256, 240, slice).unwrap();
let img = image::ImageBuffer::<image::Rgba<u8>, &[u8]>::from_raw(256, 240, slice)
.ok_or("Cannot convert image data")?;
let resized_img = image::imageops::resize(
&img,
render_context.width as u32,