1 | import { EventEmitter } from 'events';
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2 |
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3 | function toArr(any) {
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4 | return any == null ? [] : Array.isArray(any) ? any : [any];
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5 | }
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6 |
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7 | function toVal(out, key, val, opts) {
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8 | var x, old=out[key], nxt=(
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9 | !!~opts.string.indexOf(key) ? (val == null || val === true ? '' : String(val))
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10 | : typeof val === 'boolean' ? val
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11 | : !!~opts.boolean.indexOf(key) ? (val === 'false' ? false : val === 'true' || (out._.push((x = +val,x * 0 === 0) ? x : val),!!val))
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12 | : (x = +val,x * 0 === 0) ? x : val
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13 | );
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14 | out[key] = old == null ? nxt : (Array.isArray(old) ? old.concat(nxt) : [old, nxt]);
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15 | }
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16 |
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17 | var lib = function (args, opts) {
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18 | args = args || [];
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19 | opts = opts || {};
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20 |
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21 | var k, arr, arg, name, val, out={ _:[] };
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22 | var i=0, j=0, idx=0, len=args.length;
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23 |
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24 | const alibi = opts.alias !== void 0;
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25 | const strict = opts.unknown !== void 0;
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26 | const defaults = opts.default !== void 0;
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27 |
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28 | opts.alias = opts.alias || {};
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29 | opts.string = toArr(opts.string);
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30 | opts.boolean = toArr(opts.boolean);
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31 |
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32 | if (alibi) {
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33 | for (k in opts.alias) {
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34 | arr = opts.alias[k] = toArr(opts.alias[k]);
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35 | for (i=0; i < arr.length; i++) {
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36 | (opts.alias[arr[i]] = arr.concat(k)).splice(i, 1);
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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 | opts.boolean.forEach(key => {
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42 | opts.boolean = opts.boolean.concat(opts.alias[key] = opts.alias[key] || []);
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43 | });
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44 |
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45 | opts.string.forEach(key => {
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46 | opts.string = opts.string.concat(opts.alias[key] = opts.alias[key] || []);
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47 | });
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48 |
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49 | if (defaults) {
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50 | for (k in opts.default) {
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51 | opts.alias[k] = opts.alias[k] || [];
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52 | (opts[typeof opts.default[k]] || []).push(k);
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53 | }
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54 | }
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55 |
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56 | const keys = strict ? Object.keys(opts.alias) : [];
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57 |
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58 | for (i=0; i < len; i++) {
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59 | arg = args[i];
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60 |
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61 | if (arg === '--') {
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62 | out._ = out._.concat(args.slice(++i));
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63 | break;
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64 | }
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65 |
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66 | for (j=0; j < arg.length; j++) {
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67 | if (arg.charCodeAt(j) !== 45) break;
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68 | }
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69 |
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70 | if (j === 0) {
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71 | out._.push(arg);
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72 | } else if (arg.substring(j, j + 3) === 'no-') {
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73 | name = arg.substring(j + 3);
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74 | if (strict && !~keys.indexOf(name)) {
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75 | return opts.unknown(arg);
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76 | }
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77 | out[name] = false;
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78 | } else {
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79 | for (idx=j+1; idx < arg.length; idx++) {
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80 | if (arg.charCodeAt(idx) === 61) break;
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81 | }
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82 |
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83 | name = arg.substring(j, idx);
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84 | val = arg.substring(++idx) || (i+1 === len || (''+args[i+1]).charCodeAt(0) === 45 || args[++i]);
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85 | arr = (j === 2 ? [name] : name);
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86 |
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87 | for (idx=0; idx < arr.length; idx++) {
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88 | name = arr[idx];
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89 | if (strict && !~keys.indexOf(name)) return opts.unknown('-'.repeat(j) + name);
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90 | toVal(out, name, (idx + 1 < arr.length) || val, opts);
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91 | }
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92 | }
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93 | }
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94 |
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95 | if (defaults) {
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96 | for (k in opts.default) {
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97 | if (out[k] === void 0) {
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98 | out[k] = opts.default[k];
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99 | }
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100 | }
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101 | }
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102 |
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103 | if (alibi) {
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104 | for (k in out) {
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105 | arr = opts.alias[k] || [];
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106 | while (arr.length > 0) {
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107 | out[arr.shift()] = out[k];
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108 | }
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109 | }
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110 | }
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111 |
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112 | return out;
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113 | };
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114 |
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115 | const removeBrackets = (v) => v.replace(/[<[].+/, '').trim();
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116 | const findAllBrackets = (v) => {
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117 | const ANGLED_BRACKET_RE_GLOBAL = /<([^>]+)>/g;
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118 | const SQUARE_BRACKET_RE_GLOBAL = /\[([^\]]+)\]/g;
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119 | const res = [];
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120 | const parse = (match) => {
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121 | let variadic = false;
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122 | let value = match[1];
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123 | if (value.startsWith('...')) {
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124 | value = value.slice(3);
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125 | variadic = true;
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126 | }
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127 | return {
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128 | required: match[0].startsWith('<'),
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129 | value,
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130 | variadic
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131 | };
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132 | };
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133 | let angledMatch;
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134 | while ((angledMatch = ANGLED_BRACKET_RE_GLOBAL.exec(v))) {
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135 | res.push(parse(angledMatch));
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136 | }
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137 | let squareMatch;
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138 | while ((squareMatch = SQUARE_BRACKET_RE_GLOBAL.exec(v))) {
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139 | res.push(parse(squareMatch));
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140 | }
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141 | return res;
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142 | };
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143 | const getMriOptions = (options) => {
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144 | const result = { alias: {}, boolean: [] };
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145 | for (const [index, option] of options.entries()) {
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146 |
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147 |
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148 |
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149 |
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150 | if (option.names.length > 1) {
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151 | result.alias[option.names[0]] = option.names.slice(1);
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152 | }
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153 |
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154 | if (option.isBoolean) {
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155 | if (option.negated) {
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156 |
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157 |
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158 | const hasStringTypeOption = options.some((o, i) => {
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159 | return (i !== index &&
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160 | o.names.some(name => option.names.includes(name)) &&
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161 | typeof o.required === 'boolean');
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162 | });
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163 | if (!hasStringTypeOption) {
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164 | result.boolean.push(option.names[0]);
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165 | }
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166 | }
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167 | else {
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168 | result.boolean.push(option.names[0]);
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169 | }
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170 | }
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171 | }
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172 | return result;
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173 | };
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174 | const findLongest = (arr) => {
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175 | return arr.sort((a, b) => {
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176 | return a.length > b.length ? -1 : 1;
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177 | })[0];
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178 | };
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179 | const padRight = (str, length) => {
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180 | return str.length >= length ? str : `${str}${' '.repeat(length - str.length)}`;
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181 | };
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182 | const camelcase = (input) => {
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183 | return input.replace(/([a-z])-([a-z])/g, (_, p1, p2) => {
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184 | return p1 + p2.toUpperCase();
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185 | });
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186 | };
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187 | const setDotProp = (obj, keys, val) => {
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188 | let i = 0;
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189 | let length = keys.length;
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190 | let t = obj;
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191 | let x;
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192 | for (; i < length; ++i) {
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193 | x = t[keys[i]];
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194 | t = t[keys[i]] =
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195 | i === length - 1
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196 | ? val
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197 | : x != null
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198 | ? x
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199 | : !!~keys[i + 1].indexOf('.') || !(+keys[i + 1] > -1)
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200 | ? {}
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201 | : [];
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202 | }
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203 | };
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204 | const setByType = (obj, transforms) => {
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205 | for (const key of Object.keys(transforms)) {
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206 | const transform = transforms[key];
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207 | if (transform.shouldTransform) {
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208 | obj[key] = Array.prototype.concat.call([], obj[key]);
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209 | if (typeof transform.transformFunction === 'function') {
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210 | obj[key] = obj[key].map(transform.transformFunction);
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211 | }
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212 | }
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213 | }
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214 | };
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215 | const getFileName = (input) => {
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216 | const m = /([^\\\/]+)$/.exec(input);
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217 | return m ? m[1] : '';
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218 | };
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219 |
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220 | class Option {
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221 | constructor(rawName, description, config) {
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222 | this.rawName = rawName;
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223 | this.description = description;
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224 | this.config = Object.assign({}, config);
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225 |
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226 | rawName = rawName.replace(/\.\*/g, '');
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227 | this.negated = false;
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228 | this.names = removeBrackets(rawName)
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229 | .split(',')
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230 | .map((v) => {
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231 | let name = v.trim().replace(/^-{1,2}/, '');
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232 | if (name.startsWith('no-')) {
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233 | this.negated = true;
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234 | name = name.replace(/^no-/, '');
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235 | }
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236 | return name;
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237 | })
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238 | .sort((a, b) => (a.length > b.length ? 1 : -1));
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239 |
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240 | this.name = this.names[this.names.length - 1];
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241 | if (this.negated) {
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242 | this.config.default = true;
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243 | }
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244 | if (rawName.includes('<')) {
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245 | this.required = true;
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246 | }
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247 | else if (rawName.includes('[')) {
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248 | this.required = false;
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249 | }
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250 | else {
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251 |
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252 | this.isBoolean = true;
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253 | }
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254 | }
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255 | }
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256 |
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257 | const deno = typeof window !== 'undefined' && window.Deno;
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258 | const exit = (code) => {
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259 | return deno ? Deno.exit(code) : process.exit(code);
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260 | };
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261 | const processArgs = deno ? ['deno'].concat(Deno.args) : process.argv;
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262 | const platformInfo = deno
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263 | ? `${Deno.platform.os}-${Deno.platform.arch} deno-${Deno.version.deno}`
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264 | : `${process.platform}-${process.arch} node-${process.version}`;
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265 |
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266 | class Command {
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267 | constructor(rawName, description, config = {}, cli) {
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268 | this.rawName = rawName;
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269 | this.description = description;
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270 | this.config = config;
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271 | this.cli = cli;
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272 | this.options = [];
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273 | this.aliasNames = [];
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274 | this.name = removeBrackets(rawName);
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275 | this.args = findAllBrackets(rawName);
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276 | this.examples = [];
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277 | }
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278 | usage(text) {
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279 | this.usageText = text;
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280 | return this;
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281 | }
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282 | allowUnknownOptions() {
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283 | this.config.allowUnknownOptions = true;
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284 | return this;
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285 | }
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286 | ignoreOptionDefaultValue() {
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287 | this.config.ignoreOptionDefaultValue = true;
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288 | return this;
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289 | }
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290 | version(version, customFlags = '-v, --version') {
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291 | this.versionNumber = version;
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292 | this.option(customFlags, 'Display version number');
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293 | return this;
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294 | }
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295 | example(example) {
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296 | this.examples.push(example);
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297 | return this;
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298 | }
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299 | |
300 |
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301 |
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302 |
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303 |
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304 |
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305 | option(rawName, description, config) {
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306 | const option = new Option(rawName, description, config);
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307 | this.options.push(option);
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308 | return this;
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309 | }
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310 | alias(name) {
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311 | this.aliasNames.push(name);
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312 | return this;
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313 | }
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314 | action(callback) {
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315 | this.commandAction = callback;
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316 | return this;
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317 | }
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318 | |
319 |
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320 |
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321 |
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322 | isMatched(name) {
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323 | return this.name === name || this.aliasNames.includes(name);
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324 | }
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325 | get isDefaultCommand() {
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326 | return this.name === '' || this.aliasNames.includes('!');
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327 | }
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328 | get isGlobalCommand() {
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329 | return this instanceof GlobalCommand;
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330 | }
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331 | |
332 |
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333 |
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334 |
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335 | hasOption(name) {
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336 | name = name.split('.')[0];
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337 | return this.options.find(option => {
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338 | return option.names.includes(name);
|
339 | });
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340 | }
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341 | outputHelp() {
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342 | const { name, commands } = this.cli;
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343 | const { versionNumber, options: globalOptions, helpCallback } = this.cli.globalCommand;
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344 | const sections = [
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345 | {
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346 | body: `${name}${versionNumber ? ` v${versionNumber}` : ''}`
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347 | }
|
348 | ];
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349 | sections.push({
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350 | title: 'Usage',
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351 | body: ` $ ${name} ${this.usageText || this.rawName}`
|
352 | });
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353 | const showCommands = (this.isGlobalCommand || this.isDefaultCommand) && commands.length > 0;
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354 | if (showCommands) {
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355 | const longestCommandName = findLongest(commands.map(command => command.rawName));
|
356 | sections.push({
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357 | title: 'Commands',
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358 | body: commands
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359 | .map(command => {
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360 | return ` ${padRight(command.rawName, longestCommandName.length)} ${command.description}`;
|
361 | })
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362 | .join('\n')
|
363 | });
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364 | sections.push({
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365 | title: `For more info, run any command with the \`--help\` flag`,
|
366 | body: commands
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367 | .map(command => ` $ ${name}${command.name === '' ? '' : ` ${command.name}`} --help`)
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368 | .join('\n')
|
369 | });
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370 | }
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371 | const options = this.isGlobalCommand
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372 | ? globalOptions
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373 | : [...this.options, ...(globalOptions || [])];
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374 | if (options.length > 0) {
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375 | const longestOptionName = findLongest(options.map(option => option.rawName));
|
376 | sections.push({
|
377 | title: 'Options',
|
378 | body: options
|
379 | .map(option => {
|
380 | return ` ${padRight(option.rawName, longestOptionName.length)} ${option.description} ${option.config.default === undefined
|
381 | ? ''
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382 | : `(default: ${option.config.default})`}`;
|
383 | })
|
384 | .join('\n')
|
385 | });
|
386 | }
|
387 | if (this.examples.length > 0) {
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388 | sections.push({
|
389 | title: 'Examples',
|
390 | body: this.examples
|
391 | .map(example => {
|
392 | if (typeof example === 'function') {
|
393 | return example(name);
|
394 | }
|
395 | return example;
|
396 | })
|
397 | .join('\n')
|
398 | });
|
399 | }
|
400 | if (helpCallback) {
|
401 | helpCallback(sections);
|
402 | }
|
403 | console.log(sections
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404 | .map(section => {
|
405 | return section.title
|
406 | ? `${section.title}:\n${section.body}`
|
407 | : section.body;
|
408 | })
|
409 | .join('\n\n'));
|
410 | exit(0);
|
411 | }
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412 | outputVersion() {
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413 | const { name } = this.cli;
|
414 | const { versionNumber } = this.cli.globalCommand;
|
415 | if (versionNumber) {
|
416 | console.log(`${name}/${versionNumber} ${platformInfo}`);
|
417 | }
|
418 | exit(0);
|
419 | }
|
420 | checkRequiredArgs() {
|
421 | const minimalArgsCount = this.args.filter(arg => arg.required).length;
|
422 | if (this.cli.args.length < minimalArgsCount) {
|
423 | console.error(`error: missing required args for command \`${this.rawName}\``);
|
424 | exit(1);
|
425 | }
|
426 | }
|
427 | |
428 |
|
429 |
|
430 |
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431 |
|
432 | checkUnknownOptions() {
|
433 | const { rawOptions, globalCommand } = this.cli;
|
434 | if (!this.config.allowUnknownOptions) {
|
435 | for (const name of Object.keys(rawOptions)) {
|
436 | if (name !== '--' &&
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437 | !this.hasOption(name) &&
|
438 | !globalCommand.hasOption(name)) {
|
439 | console.error(`error: Unknown option \`${name.length > 1 ? `--${name}` : `-${name}`}\``);
|
440 | exit(1);
|
441 | }
|
442 | }
|
443 | }
|
444 | }
|
445 | |
446 |
|
447 |
|
448 | checkOptionValue() {
|
449 | const { rawOptions, globalCommand } = this.cli;
|
450 | const options = [...globalCommand.options, ...this.options];
|
451 | for (const option of options) {
|
452 | const value = rawOptions[option.name.split('.')[0]];
|
453 |
|
454 | if (option.required) {
|
455 | const hasNegated = options.some(o => o.negated && o.names.includes(option.name));
|
456 | if (value === true || (value === false && !hasNegated)) {
|
457 | console.error(`error: option \`${option.rawName}\` value is missing`);
|
458 | exit(1);
|
459 | }
|
460 | }
|
461 | }
|
462 | }
|
463 | }
|
464 | class GlobalCommand extends Command {
|
465 | constructor(cli) {
|
466 | super('@@global@@', '', {}, cli);
|
467 | }
|
468 | }
|
469 |
|
470 | class CAC extends EventEmitter {
|
471 | |
472 |
|
473 |
|
474 | constructor(name = '') {
|
475 | super();
|
476 | this.name = name;
|
477 | this.commands = [];
|
478 | this.globalCommand = new GlobalCommand(this);
|
479 | this.globalCommand.usage('<command> [options]');
|
480 | }
|
481 | |
482 |
|
483 |
|
484 |
|
485 |
|
486 | usage(text) {
|
487 | this.globalCommand.usage(text);
|
488 | return this;
|
489 | }
|
490 | |
491 |
|
492 |
|
493 | command(rawName, description, config) {
|
494 | const command = new Command(rawName, description || '', config, this);
|
495 | command.globalCommand = this.globalCommand;
|
496 | this.commands.push(command);
|
497 | return command;
|
498 | }
|
499 | |
500 |
|
501 |
|
502 |
|
503 |
|
504 | option(rawName, description, config) {
|
505 | this.globalCommand.option(rawName, description, config);
|
506 | return this;
|
507 | }
|
508 | |
509 |
|
510 |
|
511 |
|
512 | help(callback) {
|
513 | this.globalCommand.option('-h, --help', 'Display this message');
|
514 | this.globalCommand.helpCallback = callback;
|
515 | this.showHelpOnExit = true;
|
516 | return this;
|
517 | }
|
518 | |
519 |
|
520 |
|
521 |
|
522 | version(version, customFlags = '-v, --version') {
|
523 | this.globalCommand.version(version, customFlags);
|
524 | this.showVersionOnExit = true;
|
525 | return this;
|
526 | }
|
527 | |
528 |
|
529 |
|
530 |
|
531 |
|
532 | example(example) {
|
533 | this.globalCommand.example(example);
|
534 | return this;
|
535 | }
|
536 | |
537 |
|
538 |
|
539 |
|
540 |
|
541 |
|
542 |
|
543 | outputHelp() {
|
544 | if (this.matchedCommand) {
|
545 | this.matchedCommand.outputHelp();
|
546 | }
|
547 | else {
|
548 | this.globalCommand.outputHelp();
|
549 | }
|
550 | }
|
551 | |
552 |
|
553 |
|
554 |
|
555 |
|
556 | outputVersion() {
|
557 | this.globalCommand.outputVersion();
|
558 | }
|
559 | setParsedInfo({ args, options, rawOptions }, matchedCommand, matchedCommandName) {
|
560 | this.args = args;
|
561 | this.options = options;
|
562 | this.rawOptions = rawOptions;
|
563 | if (matchedCommand) {
|
564 | this.matchedCommand = matchedCommand;
|
565 | }
|
566 | if (matchedCommandName) {
|
567 | this.matchedCommandName = matchedCommandName;
|
568 | }
|
569 | return this;
|
570 | }
|
571 | |
572 |
|
573 |
|
574 | parse(argv = processArgs, {
|
575 |
|
576 | run = true } = {}) {
|
577 | this.rawArgs = argv;
|
578 | if (!this.name) {
|
579 | this.name = argv[1] ? getFileName(argv[1]) : 'cli';
|
580 | }
|
581 | let shouldParse = true;
|
582 |
|
583 | for (const command of this.commands) {
|
584 | const mriResult = this.mri(argv.slice(2), command);
|
585 | const commandName = mriResult.args[0];
|
586 | if (command.isMatched(commandName)) {
|
587 | shouldParse = false;
|
588 | const parsedInfo = Object.assign({}, mriResult, { args: mriResult.args.slice(1) });
|
589 | this.setParsedInfo(parsedInfo, command, commandName);
|
590 | this.emit(`command:${commandName}`, command);
|
591 | }
|
592 | }
|
593 | if (shouldParse) {
|
594 |
|
595 | for (const command of this.commands) {
|
596 | if (command.name === '') {
|
597 | shouldParse = false;
|
598 | const mriResult = this.mri(argv.slice(2), command);
|
599 | this.setParsedInfo(mriResult, command);
|
600 | this.emit(`command:!`, command);
|
601 | }
|
602 | }
|
603 | }
|
604 | if (shouldParse) {
|
605 | const mriResult = this.mri(argv.slice(2));
|
606 | this.setParsedInfo(mriResult);
|
607 | }
|
608 | if (this.options.help && this.showHelpOnExit) {
|
609 | this.outputHelp();
|
610 | }
|
611 | if (this.options.version && this.showVersionOnExit) {
|
612 | this.outputVersion();
|
613 | }
|
614 | const parsedArgv = { args: this.args, options: this.options };
|
615 | if (run) {
|
616 | this.runMatchedCommand();
|
617 | }
|
618 | if (!this.matchedCommand && this.args[0]) {
|
619 | this.emit('command:*');
|
620 | }
|
621 | return parsedArgv;
|
622 | }
|
623 | mri(argv,
|
624 | command) {
|
625 |
|
626 | const cliOptions = [
|
627 | ...this.globalCommand.options,
|
628 | ...(command ? command.options : [])
|
629 | ];
|
630 | const mriOptions = getMriOptions(cliOptions);
|
631 |
|
632 | let argsAfterDoubleDashes = [];
|
633 | const doubleDashesIndex = argv.indexOf('--');
|
634 | if (doubleDashesIndex > -1) {
|
635 | argsAfterDoubleDashes = argv.slice(doubleDashesIndex + 1);
|
636 | argv = argv.slice(0, doubleDashesIndex);
|
637 | }
|
638 | const parsed = lib(argv, mriOptions);
|
639 | const args = parsed._;
|
640 | delete parsed._;
|
641 | const options = {
|
642 | '--': argsAfterDoubleDashes
|
643 | };
|
644 |
|
645 | const ignoreDefault = command && command.config.ignoreOptionDefaultValue
|
646 | ? command.config.ignoreOptionDefaultValue
|
647 | : this.globalCommand.config.ignoreOptionDefaultValue;
|
648 | let transforms = Object.create(null);
|
649 | for (const cliOption of cliOptions) {
|
650 | if (!ignoreDefault && cliOption.config.default !== undefined) {
|
651 | for (const name of cliOption.names) {
|
652 | options[name] = cliOption.config.default;
|
653 | }
|
654 | }
|
655 |
|
656 | if (Array.isArray(cliOption.config.type)) {
|
657 | if (transforms[cliOption.name] === undefined) {
|
658 | transforms[cliOption.name] = Object.create(null);
|
659 | transforms[cliOption.name]['shouldTransform'] = true;
|
660 | transforms[cliOption.name]['transformFunction'] =
|
661 | cliOption.config.type[0];
|
662 | }
|
663 | }
|
664 | }
|
665 |
|
666 | for (const key of Object.keys(parsed)) {
|
667 | const keys = key.split('.').map((v, i) => {
|
668 | return i === 0 ? camelcase(v) : v;
|
669 | });
|
670 | setDotProp(options, keys, parsed[key]);
|
671 | setByType(options, transforms);
|
672 | }
|
673 | return {
|
674 | args,
|
675 | options,
|
676 | rawOptions: parsed
|
677 | };
|
678 | }
|
679 | runMatchedCommand() {
|
680 | const { args, options, matchedCommand: command } = this;
|
681 | if (!command || !command.commandAction)
|
682 | return;
|
683 | command.checkUnknownOptions();
|
684 | command.checkOptionValue();
|
685 | command.checkRequiredArgs();
|
686 | const actionArgs = [];
|
687 | command.args.forEach((arg, index) => {
|
688 | if (arg.variadic) {
|
689 | actionArgs.push(args.slice(index));
|
690 | }
|
691 | else {
|
692 | actionArgs.push(args[index]);
|
693 | }
|
694 | });
|
695 | actionArgs.push(options);
|
696 | return command.commandAction.apply(this, actionArgs);
|
697 | }
|
698 | }
|
699 |
|
700 |
|
701 |
|
702 |
|
703 | const cac = (name = '') => new CAC(name);
|
704 | if (typeof module !== 'undefined') {
|
705 | module.exports = cac;
|
706 | module.exports.default = cac;
|
707 | module.exports.cac = cac;
|
708 | }
|
709 |
|
710 | export default cac;
|
711 | export { cac };
|