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6 |
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7 | export function dedentBlockStringValue(rawString) {
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8 |
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9 | var lines = rawString.split(/\r\n|[\n\r]/g);
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10 |
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11 | var commonIndent = getBlockStringIndentation(lines);
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12 |
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13 | if (commonIndent !== 0) {
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14 | for (var i = 1; i < lines.length; i++) {
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15 | lines[i] = lines[i].slice(commonIndent);
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16 | }
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17 | }
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18 |
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19 |
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20 | while (lines.length > 0 && isBlank(lines[0])) {
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21 | lines.shift();
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22 | }
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23 |
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24 | while (lines.length > 0 && isBlank(lines[lines.length - 1])) {
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25 | lines.pop();
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26 | }
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27 |
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28 |
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29 | return lines.join('\n');
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30 | }
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31 |
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32 | export function getBlockStringIndentation(lines) {
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33 | var commonIndent = null;
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34 |
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35 | for (var i = 1; i < lines.length; i++) {
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36 | var line = lines[i];
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37 | var indent = leadingWhitespace(line);
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38 |
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39 | if (indent === line.length) {
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40 | continue;
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41 | }
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42 |
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43 | if (commonIndent === null || indent < commonIndent) {
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44 | commonIndent = indent;
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45 |
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46 | if (commonIndent === 0) {
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47 | break;
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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 | return commonIndent === null ? 0 : commonIndent;
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53 | }
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54 |
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55 | function leadingWhitespace(str) {
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56 | var i = 0;
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57 |
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58 | while (i < str.length && (str[i] === ' ' || str[i] === '\t')) {
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59 | i++;
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60 | }
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61 |
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62 | return i;
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63 | }
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64 |
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65 | function isBlank(str) {
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66 | return leadingWhitespace(str) === str.length;
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67 | }
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68 |
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69 |
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70 |
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71 |
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72 |
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73 |
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74 |
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75 | export function printBlockString(value) {
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76 | var indentation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
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77 | var preferMultipleLines = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
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78 | var isSingleLine = value.indexOf('\n') === -1;
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79 | var hasLeadingSpace = value[0] === ' ' || value[0] === '\t';
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80 | var hasTrailingQuote = value[value.length - 1] === '"';
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81 | var printAsMultipleLines = !isSingleLine || hasTrailingQuote || preferMultipleLines;
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82 | var result = '';
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83 |
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84 | if (printAsMultipleLines && !(isSingleLine && hasLeadingSpace)) {
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85 | result += '\n' + indentation;
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86 | }
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87 |
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88 | result += indentation ? value.replace(/\n/g, '\n' + indentation) : value;
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89 |
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90 | if (printAsMultipleLines) {
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91 | result += '\n';
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92 | }
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93 |
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94 | return '"""' + result.replace(/"""/g, '\\"""') + '"""';
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95 | }
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