72 lines
2.7 KiB
Rust
72 lines
2.7 KiB
Rust
/*! sheetjs (C) SheetJS -- https://sheetjs.com */
|
|
/* run code, get result as a Rust String */
|
|
fn eval_code(scope: &mut v8::HandleScope, code: &str) -> std::string::String {
|
|
let source = v8::String::new(scope, code).unwrap();
|
|
let script = v8::Script::compile(scope, source, None).unwrap();
|
|
let result = script.run(scope).unwrap();
|
|
return result.to_string(scope).unwrap().to_rust_string_lossy(scope);
|
|
}
|
|
|
|
/* assuming JS code returns an ArrayBuffer, copy result to a Vec<u8> */
|
|
fn eval_code_ab(scope: &mut v8::HandleScope, code: &str) -> Vec<u8> {
|
|
let source = v8::String::new(scope, code).unwrap();
|
|
let script = v8::Script::compile(scope, source, None).unwrap();
|
|
let result: v8::Local<v8::ArrayBuffer> = script.run(scope).unwrap().try_into().unwrap();
|
|
unsafe { return std::slice::from_raw_parts_mut(result.data().unwrap().cast::<u8>().as_ptr(), result.byte_length()).to_vec(); }
|
|
}
|
|
|
|
fn main() {
|
|
/* parse arguments */
|
|
let mut iter = std::env::args();
|
|
let path: String = iter.nth(1).expect("must specify a file name");
|
|
|
|
/* initialize */
|
|
let platform = v8::new_default_platform(0, false).make_shared();
|
|
v8::V8::initialize_platform(platform);
|
|
v8::V8::initialize();
|
|
|
|
let isolate = &mut v8::Isolate::new(Default::default());
|
|
let handle_scope = &mut v8::HandleScope::new(isolate);
|
|
let context = v8::Context::new(handle_scope);
|
|
let context_scope = &mut v8::ContextScope::new(handle_scope, context);
|
|
|
|
/* load library */
|
|
{
|
|
let script = std::fs::read_to_string("./xlsx.full.min.js").expect("Error reading xlsx.full.min.js");
|
|
let _result = eval_code(context_scope, &script);
|
|
}
|
|
|
|
/* get version string */
|
|
{
|
|
let result = eval_code(context_scope, "XLSX.version");
|
|
println!("SheetJS library version {}", result);
|
|
}
|
|
|
|
/* read file */
|
|
{
|
|
let data: Vec<u8> = std::fs::read(path.clone()).unwrap();
|
|
let back: v8::UniqueRef<v8::BackingStore> = v8::ArrayBuffer::new_backing_store_from_vec(data);
|
|
let shared = back.make_shared();
|
|
let ab: v8::Local<v8::ArrayBuffer> = v8::ArrayBuffer::with_backing_store(context_scope, &shared);
|
|
let key = v8::String::new(context_scope, "buf").unwrap();
|
|
context.global(context_scope).set(context_scope, key.into(), ab.into());
|
|
println!("Loaded file {}", path);
|
|
}
|
|
|
|
/* parse workbook and assign to global `wb` property */
|
|
{
|
|
let _result = eval_code(context_scope, "void (globalThis.wb = XLSX.read(buf))");
|
|
}
|
|
|
|
/* print CSV of first worksheet */
|
|
{
|
|
let result = eval_code(context_scope, "XLSX.utils.sheet_to_csv(wb.Sheets[wb.SheetNames[0]])");
|
|
println!("{}", result);
|
|
}
|
|
|
|
/* write sheetjsw.xlsb */
|
|
{
|
|
let result = eval_code_ab(context_scope, "XLSX.write(wb, {type:'array', bookType:'xlsb'})");
|
|
std::fs::write("sheetjsw.xlsb", result).unwrap();
|
|
}
|
|
} |