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Handle failure to allocate QR code on panic

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This commit is contained in:
Gwilym Inzani 2024-05-14 21:36:55 +01:00
parent f80b180fda
commit 94729e45ec
1 changed files with 11 additions and 5 deletions
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16
agb/src/panics_render.rs
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@ -1,6 +1,6 @@
use core::{fmt::Write, panic::PanicInfo}; use core::{fmt::Write, panic::PanicInfo};
use alloc::{format, vec}; use alloc::{format, vec::Vec};
use crate::{ use crate::{
backtrace, backtrace,
@ -66,9 +66,15 @@ pub fn render_backtrace(trace: &backtrace::Frames, info: &PanicInfo) -> ! {
/// Returns the width / height of the QR code + padding in pixels /// Returns the width / height of the QR code + padding in pixels
fn draw_qr_code(gfx: &mut Bitmap3<'_>, qrcode_string_data: &str) -> i32 { fn draw_qr_code(gfx: &mut Bitmap3<'_>, qrcode_string_data: &str) -> i32 {
const MAX_VERSION: qrcodegen_no_heap::Version = qrcodegen_no_heap::Version::new(6); const MAX_VERSION: qrcodegen_no_heap::Version = qrcodegen_no_heap::Version::new(6);
const PADDING: i32 = 8 * 2;
let mut temp_buffer = vec![0; MAX_VERSION.buffer_len()]; let (Ok(mut temp_buffer), Ok(mut out_buffer)) = (
let mut out_buffer = vec![0; MAX_VERSION.buffer_len()]; Vec::try_with_capacity_in(MAX_VERSION.buffer_len(), crate::ExternalAllocator),
Vec::try_with_capacity_in(MAX_VERSION.buffer_len(), crate::ExternalAllocator),
) else {
crate::println!("Failed to allocate memory to generate QR code");
return PADDING;
};
let qr_code = match qrcodegen_no_heap::QrCode::encode_text( let qr_code = match qrcodegen_no_heap::QrCode::encode_text(
qrcode_string_data, qrcode_string_data,
@ -83,7 +89,7 @@ fn draw_qr_code(gfx: &mut Bitmap3<'_>, qrcode_string_data: &str) -> i32 {
Ok(qr_code) => qr_code, Ok(qr_code) => qr_code,
Err(e) => { Err(e) => {
crate::println!("Error generating qr code: {e:?}"); crate::println!("Error generating qr code: {e:?}");
return 8; return PADDING;
} }
}; };
@ -98,5 +104,5 @@ fn draw_qr_code(gfx: &mut Bitmap3<'_>, qrcode_string_data: &str) -> i32 {
} }
} }
qr_code.size() * 2 + 8 * 2 qr_code.size() * 2 + PADDING
} }