36 lines
834 B
JavaScript
36 lines
834 B
JavaScript
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import { spawn } from 'child_process';
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import xml2js from 'xml2js';
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const parser = new xml2js.Parser();
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const builder = new xml2js.Builder({ headless: true });
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const invokeDot = (input, format) => new Promise((resolve, reject) =>
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{
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const dot = spawn('dot', [`-T${format}`]);
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let stdout = '';
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dot.stdout.on('data', data => stdout += data);
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dot.on('close', code => {
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if (code !== 0)
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{
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reject(new Error(`dot returned error code ${code}`));
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}
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else
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{
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resolve(stdout);
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}
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});
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dot.on('error', reject);
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dot.stdin.write(input);
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dot.stdin.end();
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});
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export const toSVG = async input =>
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{
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const svg = await invokeDot(input, 'svg');
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const parsed = await parser.parseStringPromise(svg);
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return builder.buildObject(parsed);
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};
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