26 lines
1.1 KiB
Rust
26 lines
1.1 KiB
Rust
use std::io::Write;
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use std::{backtrace, fs::File};
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use crate::config;
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/// Register a custom panic handler to write backtraces to a file called `backtrace.log` inside the
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/// user's cache directory.
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pub fn register_backtrace_panic_handler() {
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// During most of the program, Cursive is responsible for drawing to the
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// tty. Since stdout probably doesn't work as expected during a panic, the
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// backtrace is written to a file at $USER_CACHE_DIR/ncspot/backtrace.log.
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std::panic::set_hook(Box::new(|panic_info| {
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// A panic hook will prevent the default panic handler from being
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// called. An unwrap in this part would cause a hard crash of ncspot.
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// Don't unwrap/expect/panic in here!
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if let Ok(backtrace_log) = config::try_proj_dirs() {
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let mut path = backtrace_log.cache_dir;
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path.push("backtrace.log");
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if let Ok(mut file) = File::create(path) {
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writeln!(file, "{}", backtrace::Backtrace::force_capture()).unwrap_or_default();
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writeln!(file, "{panic_info}").unwrap_or_default();
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}
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}
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}));
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}
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