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fixing markers

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This commit is contained in:
Zakary Timson
2026-06-22 00:20:37 -04:00
parent 26ad37e82b
commit daabb1665e
1 changed files with 7 additions and 14 deletions
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21
server/airtraffic.mjs
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@@ -12,23 +12,16 @@ export async function getShapes() {
return JSON.parse(await readFile(SHAPES_PATH, 'utf8')) return JSON.parse(await readFile(SHAPES_PATH, 'utf8'))
} }
const r = await fetch('https://raw.githubusercontent.com/wiedehopf/tar1090/refs/heads/master/html/markers.js') const r = await fetch('https://raw.githubusercontent.com/wiedehopf/tar1090/refs/heads/master/html/markers.js', {
headers: { 'User-Agent': 'Mozilla/5.0' }
})
const text = await r.text() const text = await r.text()
// Rip out just the `let shapes = { ... }` block by finding the matching closing brace let shapes = {}
const start = text.indexOf('let shapes = {') eval(text.replace('let shapes', 'shapes') + '; shapes = shapes;')
if (start === -1) throw new Error('Could not find shapes definition in markers.js')
let depth = 0, end = -1 const fn = new Function(`${text.replace('let shapes', 'var shapes')}; return shapes;`)
for (let i = start + 'let shapes = '.length; i < text.length; i++) { shapes = fn()
if (text[i] === '{') depth++
else if (text[i] === '}') { depth--; if (depth === 0) { end = i + 1; break } }
}
if (end === -1) throw new Error('Could not find end of shapes definition')
// Use Function to eval the JS object safely (avoids JSON.parse issues with unquoted keys, comments etc)
const shapes = new Function(`return ${text.slice(start + 'let shapes = '.length, end)}`)()
await writeFile(SHAPES_PATH, JSON.stringify(shapes)) await writeFile(SHAPES_PATH, JSON.stringify(shapes))
return shapes return shapes