cef9c5c9a2
Accepts decimal or 0x-hex GID input. gid=0 is rendered as the literal 'empty'; non-zero values print the three components in a parse-stable space-separated key=value form.
40 lines
822 B
JavaScript
40 lines
822 B
JavaScript
'use strict';
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const { decodeGid } = require('../gid');
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const USAGE = 'usage: sporel-mapper decode <gid>\n';
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function parseGid(s) {
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let n;
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if (/^0x[0-9a-fA-F]+$/.test(s)) {
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n = parseInt(s, 16);
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} else if (/^\d+$/.test(s)) {
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n = parseInt(s, 10);
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} else {
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throw new RangeError(`gid '${s}' is not a decimal or 0x-hex integer`);
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}
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return n;
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}
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function run(args, { out, err }) {
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if (args.length !== 1) {
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err.write(USAGE);
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return 1;
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}
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try {
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const gid = parseGid(args[0]);
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if (gid === 0) {
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out.write('empty\n');
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return 0;
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}
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const { atlas, tile, rotation } = decodeGid(gid);
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out.write(`atlas=${atlas} tile=${tile} rotation=${rotation}\n`);
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return 0;
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} catch (e) {
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err.write(`error: ${e.message}\n`);
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return 1;
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}
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}
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module.exports = { run };
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