corrade-nucleus-nucleons – Blame information for rev 36
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Rev | Author | Line No. | Line |
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36 | office | 1 | 'use strict'; |
2 | |||
3 | var path = require('path'); |
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4 | var which = require('which'); |
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5 | var LRU = require('lru-cache'); |
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6 | |||
7 | var commandCache = new LRU({ max: 50, maxAge: 30 * 1000 }); // Cache just for 30sec |
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8 | |||
9 | function resolveCommand(command, noExtension) { |
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10 | var resolved; |
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11 | |||
12 | noExtension = !!noExtension; |
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13 | resolved = commandCache.get(command + '!' + noExtension); |
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14 | |||
15 | // Check if its resolved in the cache |
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16 | if (commandCache.has(command)) { |
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17 | return commandCache.get(command); |
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18 | } |
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19 | |||
20 | try { |
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21 | resolved = !noExtension ? |
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22 | which.sync(command) : |
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23 | which.sync(command, { pathExt: path.delimiter + (process.env.PATHEXT || '') }); |
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24 | } catch (e) { /* empty */ } |
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25 | |||
26 | commandCache.set(command + '!' + noExtension, resolved); |
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27 | |||
28 | return resolved; |
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29 | } |
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30 | |||
31 | module.exports = resolveCommand; |