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import PHPWasm from './php-wasm.js'
process.once('message', async ({ code, input }) => {
const PRELUDE = `
define('STDIN', fopen('php://stdin', 'r'));
define('STDOUT', fopen('php://stdout', 'r'));
define('STDERR', fopen('php://stderr', 'r'));
`;
const BUFFER_MAX = 1024 * 1024 * 1;
let stdinPos = 0; // bytewise
let stdinBuf = Buffer.from(input);
let stdoutPos = 0; // bytewise
let stdoutBuf = Buffer.alloc(BUFFER_MAX);
let stderrPos = 0; // bytewise
let stderrBuf = Buffer.alloc(BUFFER_MAX);
const { ccall } = await PHPWasm({
stdin: () => {
if (stdinBuf.length <= stdinPos) {
return null;
}
return stdinBuf.readUInt8(stdinPos++);
},
stdout: (asciiCode) => {
if (asciiCode === null) {
return; // flush
}
if (BUFFER_MAX <= stdoutPos) {
return; // ignore
}
if (asciiCode < 0) {
asciiCode += 256;
}
stdoutBuf.writeUInt8(asciiCode, stdoutPos++);
},
stderr: (asciiCode) => {
if (asciiCode === null) {
return; // flush
}
if (BUFFER_MAX <= stderrPos) {
return; // ignore
}
if (asciiCode < 0) {
asciiCode += 256;
}
stderrBuf.writeUInt8(asciiCode, stderrPos++);
},
});
const result = ccall(
'php_wasm_run',
'number', ['string'],
[PRELUDE + code],
);
process.send({
status: result === 0 ? 'AC' : 'RE',
stdout: stdoutBuf.subarray(0, stdoutPos).toString(),
stderr: stderrBuf.subarray(0, stderrPos).toString(),
});
});
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