34 lines
1.5 KiB
JavaScript
34 lines
1.5 KiB
JavaScript
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const TargetError = require('./errors/target-error');
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function extractTarget(target) {
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if (!target) throw new TargetError('\'target\' is required');
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// First, check to see if we have a protocol specified.
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const protocol = target.toLowerCase().startsWith('http://') ? 'http' : undefined;
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// If we have a protocol, we can rip it out of the string.
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target = protocol ? target.substring('http://'.length) : target;
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// If we have a protocol, we can also rip out the path (if there is one).
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const pathStart = target.indexOf('/');
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const path = pathStart !== -1 ? target.substring(pathStart) : undefined;
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target = pathStart !== -1 ? target.substring(0, pathStart) : target;
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// Split the target by the separator (which might not be present.
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const split = target.split(':');
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if (split.length > 2) throw new TargetError(`'${target}' is an invalid target, it has more than two ':' symbols`);
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// Grab the host and port (which will still be a string).
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const host = split.length === 2 ? (split[0] || undefined) : undefined;
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const portString = split.length === 1 ? split[0] : split[1];
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// Make sure the port is numeric.
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if (!/^[0-9]+$/.test(portString)) throw new TargetError(`'${target}' is an invalid target, '${portString}' is not a valid port number - try something like 'host:port'`);
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const port = parseInt(portString, 10);
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// That's it, return the extracted target.
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return { protocol, host, port, path };
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}
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module.exports = extractTarget;
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