@dataplan/pg
Version:
PostgreSQL step classes for Grafast
35 lines • 1.02 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseLseg = parseLseg;
exports.stringifyLseg = stringifyLseg;
const grafast_1 = require("grafast");
/**
* Parses the Postgres line segment syntax.
*
* https://www.postgresql.org/docs/current/datatype-geometric.html#DATATYPE-LSEG
*/
function parseLseg(f) {
if (f[0] === "[" && f[f.length - 1] === "]") {
const [x1, y1, x2, y2] = f
.slice(1, f.length - 1)
.replace(/[()]/g, "")
.split(",")
.map((f) => parseFloat(f));
return {
a: { x: x1, y: y1 },
b: { x: x2, y: y2 },
};
}
else {
throw new grafast_1.SafeError(`Failed to parse lseg ${f}`);
}
}
/**
* Stringifies to the Postgres line segment syntax.
*
* https://www.postgresql.org/docs/current/datatype-geometric.html#DATATYPE-LSEG
*/
function stringifyLseg(lseg) {
return `${lseg.a.x},${lseg.a.y},${lseg.b.x},${lseg.b.y}`;
}
//# sourceMappingURL=lseg.js.map