71 lines
1.7 KiB
Rust
71 lines
1.7 KiB
Rust
//! Debugging helpers to handle `WAYLAND_DEBUG` env variable.
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use std::time::{SystemTime, UNIX_EPOCH};
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use crate::wire::Argument;
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/// Print the dispatched message to stderr in a following format:
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///
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/// [timestamp] <- interface@id.msg_name(args)
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pub fn print_dispatched_message(interface: &str, id: u32, msg_name: &str, args: &[Argument]) {
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// Add timestamp to output.
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print_timestamp();
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eprint!(" <- {}@{}.{}", interface, id, msg_name);
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print_args(args);
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// Add a new line.
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eprintln!();
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}
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/// Print the send message to stderr in a following format:
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///
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/// [timestamp] -> interface@id.msg_name(args)
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///
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/// If `is_alive` is `false` the `[ZOMBIE]` is added after `id`.
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pub fn print_send_message(
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interface: &str,
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id: u32,
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is_alive: bool,
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msg_name: &str,
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args: &[Argument],
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) {
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// Add timestamp to output.
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print_timestamp();
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eprint!(" -> {}@{}{}.{}", interface, id, if is_alive { "" } else { "[ZOMBIE]" }, msg_name);
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print_args(args);
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// Add a new line.
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eprintln!();
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}
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/// Print arguments with opening/closing bracket.
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fn print_args(args: &[Argument]) {
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let num_args = args.len();
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eprint!("(");
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if num_args > 0 {
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// Explicitly handle first argument to handle one arg functions nicely.
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eprint!("{}", args[0]);
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// Handle the rest.
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for arg in args.iter().take(num_args).skip(1) {
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eprint!(", {}", arg);
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}
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}
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eprint!(")")
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}
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/// Print timestamp in seconds.microseconds format.
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fn print_timestamp() {
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if let Ok(timestamp) = SystemTime::now().duration_since(UNIX_EPOCH) {
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let sc = timestamp.as_secs();
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let ms = timestamp.subsec_micros();
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eprint!("[{}.{:06}]", sc, ms);
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}
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}
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