WebAssembly (WASM) binary to parse IATA BCBP strings using the sfomuseum/go-bcbp package, targeting JavaScript.
Run the handy wamjs Makefile target:
$> make wasmjs
GOOS=js GOARCH=wasm \
go build -mod vendor -ldflags="-s -w" \
-o www/wasm/parse_bcbp.wasm \
cmd/parse-wasmjs/main.go
<script src="javascript/wasm_exec.js"></script>
<script src="javascript/sfomuseum.wasm.js"></script>
<script type="text/javascript">
sfomuseum.wasm.fetch("parse_bcbp.wasm").then(rsp => {
var bcbp_str = "M1DESMARAIS/LUC EABC123 LASSFOUA 0574 419J001A0025 100";
parse_bcbp(bcbp_str).then(bcbp_rsp => {
// Do something with bcbprsp
}).catch(err => {
console.error("Failed to parse BCBP string", err);
});
}).catch(err => {
console.error("Failed to initialize parse_bcbp.wasm", err)
});
</script>
See www folder for a complete working example.
Where rsp looks like this:
{
"raw": "M1DESMARAIS/LUC EABC123 LASSFOUA 0574 419J001A0025 100",
"legs": [
{
"fields": {
"format_code": "M",
"number_of_legs": "1",
"passenger_name": "DESMARAIS/LUC",
"electronic_ticket_indicator": "E",
"operating_carrier_pnr": "ABC123",
"from_airport": "LAS",
"to_airport": "SFO",
"operating_carrier_designator": "UA",
"flight_number": "0574",
"date_of_flight": "419",
"compartment_code": "J",
"seat_number": "1A",
"checkin_sequence_number": "25 ",
"passenger_status": "1",
"optional_data_size": "00",
"optional_data": ""
},
"month": 2,
"day": 23
}
]
}
$> make debug
fileserver \
-root ./www \
-server-uri http://localhost:8080 \
-mimetype js=text/javascript \
-mimetype wasm=application/wasm \
-enable-cors
2025/02/21 15:36:14 Serving ./www and listening for requests on http://localhost:8080
For example:
For a more complete example which includes client-side parsing of BCBP data in 2D barcodes take a look at the sfomuseum/www-sfomuseum-boardingpass repository.