Amy
Amy•3mo ago

How to get the path to the file from a deno_core op2?

I want to implement a subset of fs in op2, but I want it to be relative to the dir the file is in. I can't find anything on OpState or HandleScope for that though. And right now, import.meta.path is undefined, not sure how to fix that either
1 Reply
Amy
AmyOP•3mo ago
okay looks like its like 
#[op2]
#[string]
pub fn op_where_am_i<'s>(
    scope: &mut v8::HandleScope<'s>,
    state: &OpState,
) -> Result<Option<String>, deno_error::JsErrorBox> {
    let stack_trace = v8::StackTrace::current_stack_trace(scope, 1);

    if let Some(trace) = stack_trace {
        if trace.get_frame_count() > 0 {
            let frame = trace.get_frame(scope, 0).unwrap();
            let script_name = frame.get_script_name_or_source_url(scope);
            if let Some(name) = script_name {
                return Ok(Some(name.to_rust_string_lossy(scope)));
            }
        }
    }
    Ok(None)
}
#[op2]
#[string]
pub fn op_where_am_i<'s>(
    scope: &mut v8::HandleScope<'s>,
    state: &OpState,
) -> Result<Option<String>, deno_error::JsErrorBox> {
    let stack_trace = v8::StackTrace::current_stack_trace(scope, 1);

    if let Some(trace) = stack_trace {
        if trace.get_frame_count() > 0 {
            let frame = trace.get_frame(scope, 0).unwrap();
            let script_name = frame.get_script_name_or_source_url(scope);
            if let Some(name) = script_name {
                return Ok(Some(name.to_rust_string_lossy(scope)));
            }
        }
    }
    Ok(None)
}
works

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