forked from sheetjs/docs.sheetjs.com
56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
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fn doit(ctx: &ducc::Ducc, code: &str) { ctx.compile(code, None).unwrap().call::<(), ()>(()).unwrap(); }
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fn get_string(str: ducc::Value) -> String { str.as_string().unwrap().to_string().unwrap() }
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fn main() {
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let ctx = ducc::Ducc::new();
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/* initialize */
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doit(&ctx, "var global = (function(){ return this; }).call(null);");
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/* load library */
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{
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doit(&ctx, include_str!("shim.min.js"));
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doit(&ctx, include_str!("xlsx.full.min.js"));
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}
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/* get version string */
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{
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let vers: ducc::Value = ctx.compile("XLSX.version", None).unwrap().call(()).unwrap();
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println!("SheetJS library version {}", get_string(vers));
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}
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/* read file */
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{
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let mut iter = std::env::args();
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let path: String = iter.nth(1).expect("must specify a file name");
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let file: Vec<u8> = std::fs::read(path.clone()).unwrap();
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/* push data to duktape (creates a Uint8Array) */
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let bytes = ctx.create_bytes(file.as_slice()).unwrap();
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/* assign to global `buf` */
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let _ = ctx.globals().set("buf", bytes);
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}
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/* parse workbook */
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{
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doit(&ctx, "wb = XLSX.read(buf.slice(0, buf.length), {type:'buffer'});");
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doit(&ctx, "ws = wb.Sheets[wb.SheetNames[0]]");
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}
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/* print CSV */
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{
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let csv: ducc::Value = ctx.compile("XLSX.utils.sheet_to_csv(ws)", None).unwrap().call(()).unwrap();
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println!("{}", get_string(csv));
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}
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/* write file */
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{
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/* due to issues with the duktape crate, it is easier to pass a base64-encoded string and decode in Rust */
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let xlsb: ducc::Value = ctx.compile("XLSX.write(wb, {type:'base64', bookType:'xlsb'})", None).unwrap().call(()).unwrap();
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let _ = std::fs::write("sheetjsw.xlsb", base64::Engine::decode(&base64::engine::general_purpose::STANDARD, get_string(xlsb)).unwrap());
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}
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}
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