1 | var fs = require('fs');
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2 | var mkdirp = require('mkdirp');
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3 | var accessFile = fs.accessSync || fs.existsSync;
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4 |
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5 | exports.generateCompiledPath = function(filePath) {
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6 | if (process.env.DEBUG) {
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7 | return filePath.replace(/\W+/g, '_');
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8 | }
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9 | else {
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10 | return 's-' + hashString(filePath);
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11 | }
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12 | };
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13 |
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14 | exports.isReadable = function(filePath) {
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15 | try {
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16 | var ret = accessFile(filePath, fs.R_OK);
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17 | if (ret !== undefined) {
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18 | return ret;
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19 | }
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20 | return true;
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21 | }
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22 | catch(e) {
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23 | return false;
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24 | }
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25 | };
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26 |
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27 | exports.isWritable = function(filePath) {
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28 | try {
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29 | var ret = accessFile(filePath, fs.W_OK);
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30 | if (ret !== undefined) {
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31 | return ret;
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32 | }
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33 | return true;
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34 | }
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35 | catch(e) {
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36 | return false;
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37 | }
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38 | };
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39 |
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40 |
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41 | exports.mkdirSync = function(dirPath) {
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42 | try {
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43 | mkdirp.sync(dirPath);
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44 | }
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45 | catch (e) {
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46 | if (!e.message.match('EEXIST')) {
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47 | throw e;
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48 | }
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49 | }
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50 | };
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51 |
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52 |
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53 | function hashString(string) {
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54 | var hash = 0;
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55 | var i, chr, len;
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56 |
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57 | if (string.length === 0) return hash;
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58 |
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59 | for (i = 0, len = string.length; i < len; i++) {
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60 | chr = string.charCodeAt(i);
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61 | hash = ((hash << 5) - hash) + chr;
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62 | hash |= 0;
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63 | }
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64 |
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65 | return String(hash);
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66 | }
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