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Original file line number | Diff line number | Diff line change |
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use namada::types::io::Io; | ||
use wasm_bindgen::JsValue; | ||
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pub struct BrowserIo; | ||
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fn read(question: Option<&str>) -> std::io::Result<String> { | ||
match web_sys::window() { | ||
Some(w) => { | ||
let question = question.unwrap_or("Input: "); | ||
let input = w | ||
.prompt_with_message(question) | ||
.expect("Prompt to be deifned"); | ||
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input.ok_or(std::io::Error::new( | ||
std::io::ErrorKind::Other, | ||
"Input is null", | ||
)) | ||
} | ||
None => Err(std::io::Error::new(std::io::ErrorKind::Other, "No window")), | ||
} | ||
} | ||
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impl Io for BrowserIo { | ||
/// Print to the console.log | ||
/// | ||
/// # Arguments | ||
/// | ||
/// * `output` - The output to print | ||
fn print(output: impl AsRef<str>) { | ||
web_sys::console::log_1(&output.as_ref().into()); | ||
} | ||
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/// Print to the console.log with newline | ||
/// | ||
/// # Arguments | ||
/// | ||
/// * `output` - The output to print | ||
fn println(output: impl AsRef<str>) { | ||
let js_output: JsValue = format!("{}\n", output.as_ref()).into(); | ||
web_sys::console::log_1(&js_output); | ||
} | ||
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/// Placeholder for the write function. | ||
/// For now only prints to the console.log | ||
/// | ||
/// # Arguments | ||
/// | ||
/// * `_writer` - unused | ||
/// * `output` - The output to print | ||
fn write<W: std::io::Write>(mut _writer: W, output: impl AsRef<str>) -> std::io::Result<()> { | ||
Ok(BrowserIo::print(output)) | ||
} | ||
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/// Placeholder for the writeln function. | ||
/// For now only prints newline to the console.log | ||
/// | ||
/// # Arguments | ||
/// | ||
/// * `_writer` - unused | ||
/// * `output` - The output to print | ||
fn writeln<W: std::io::Write>(mut _writer: W, output: impl AsRef<str>) -> std::io::Result<()> { | ||
Ok(BrowserIo::println(output)) | ||
} | ||
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/// Print to the console.error with newline | ||
/// | ||
/// # Arguments | ||
/// | ||
/// * `output` - The output to print | ||
fn eprintln(output: impl AsRef<str>) { | ||
let js_output: JsValue = format!("{}\n", output.as_ref()).into(); | ||
web_sys::console::error_1(&js_output); | ||
} | ||
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/// Read from the prompt | ||
/// | ||
/// **Note**: Works only in the context of a document(WebWorkers and ServiceWorkers are not supported) | ||
fn read() -> std::io::Result<String> { | ||
read(None) | ||
} | ||
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/// Read from the prompt with a question | ||
/// | ||
/// **Note**: Works only in the context of a document(WebWorkers and ServiceWorkers are not supported) | ||
fn prompt(question: impl AsRef<str>) -> String { | ||
read(Some(question.as_ref())).unwrap_or(String::from("")) | ||
} | ||
} |
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