1 | module.exports = command;
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2 |
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3 | /**
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4 | * command constructs the executable command to run in a shell including the
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5 | * user script, the command arguments.
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6 | *
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7 | * @param {Object} settings Object as:
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8 | * { execOptions: {
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9 | * exec: String,
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10 | * [script: String],
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11 | * [scriptPosition: Number],
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12 | * [execArgs: Array<string>]
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13 | * }
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14 | * }
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15 | * @return {Object} an object with the node executable and the
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16 | * arguments to the command
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17 | */
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18 | function command(settings) {
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19 | var options = settings.execOptions;
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20 | var executable = options.exec;
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21 | var args = [];
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22 |
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23 | // after "executable" go the exec args (like --debug, etc)
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24 | if (options.execArgs) {
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25 | [].push.apply(args, options.execArgs);
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26 | }
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27 |
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28 | // then goes the user's script arguments
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29 | if (options.args) {
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30 | [].push.apply(args, options.args);
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31 | }
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32 |
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33 | // after the "executable" goes the user's script
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34 | if (options.script) {
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35 | args.splice((options.scriptPosition || 0) +
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36 | options.execArgs.length, 0, options.script);
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37 | }
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38 |
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39 | return {
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40 | executable: executable,
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41 | args: args,
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42 | };
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43 | }
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