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7 |
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8 | 'use strict';
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9 |
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10 | var utils = require('./utils');
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11 | var Glob = require('./glob');
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12 |
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13 |
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14 |
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15 |
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16 |
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17 | module.exports = expand;
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18 |
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19 |
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20 |
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21 |
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23 |
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25 |
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26 |
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27 |
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28 |
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29 | function expand(pattern, options) {
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30 | var opts = options || {};
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31 | var glob = new Glob(pattern, opts);
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32 |
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33 | function replace(re, str) {
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34 | glob.repl(re, esc(str));
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35 | pattern = glob.pattern;
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36 | }
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37 |
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38 |
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39 | if (specialCase(pattern) && opts.safemode) {
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40 | return new RegExp(utils.escapeRe(pattern), 'g');
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41 | }
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42 |
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43 | if (opts.nonegate !== true) {
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44 | opts.negated = glob.negated;
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45 | }
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46 |
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47 | glob.repl('/.', '/\\.');
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48 |
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49 |
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50 | glob.track('before brackets');
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51 | glob.brackets();
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52 | glob.track('before braces');
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53 | glob.braces();
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54 | glob.track('after braces');
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55 | glob.parse();
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56 |
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57 | glob.repl('[]', '\\[\\]');
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58 | glob.repl('(?', '__QMARK_GROUP__');
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59 |
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60 |
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61 | var tok = glob.tokens;
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62 | if (tok.is.dotfile) {
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63 | opts.dot = true;
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64 | }
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65 |
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66 | if (!tok.is.glob) {
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67 | return {
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68 | pattern: utils.escapePath(glob.pattern),
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69 | tokens: tok,
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70 | options: opts
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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 | replace(/^(\w):([\\\/]+?)/gi, lookahead + '$1:$2');
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76 |
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77 |
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78 | if (/\[\^/.test(glob.pattern)) {
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79 | glob.pattern = negateSlash(glob.pattern);
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80 | }
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81 |
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82 | if (glob.pattern === '**' && opts.globstar !== false) {
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83 | glob.pattern = globstar(opts);
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84 |
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85 | } else {
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86 | if (/^\*\.\w*$/.test(glob.pattern)) {
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87 | glob.repl('*', star(opts.dot) + '\\');
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88 | glob.repl('__QMARK_GROUP__', '(?');
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89 | return glob;
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90 | }
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91 |
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92 |
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93 | glob.repl(/(\/\*)+/g, function (match) {
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94 | var len = match.length / 2;
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95 | if (len === 1) { return match; }
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96 | return '(?:\\/*){' + len + '}';
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97 | });
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98 |
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99 | glob.pattern = balance(glob.pattern, '[', ']');
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100 |
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101 |
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102 | glob.escape(glob.pattern);
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103 |
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104 |
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105 |
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106 | if (tok.path.dirname === '') {
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107 | return expandFilename(glob, opts);
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108 | }
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109 |
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110 |
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111 | if (tok.is.globstar) {
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112 | glob.pattern = collapse(glob.pattern, '**/');
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113 | glob.pattern = collapse(glob.pattern, '/**');
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114 | glob.pattern = optionalGlobstar(glob.pattern);
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115 |
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116 |
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117 | glob.repl(/(^|[^\\])\*{2,}([^\\]|$)/g, '$1**$2');
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118 |
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119 |
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120 | replace(/(\w+)\*\*(?!\/)/g, '(?=.)$1[^/]*?');
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121 | replace('**/', '.*\\/');
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122 | replace('**', globstar(opts));
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123 | replace('/*', '\\/?' + nodot + '[^\\/]*?');
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124 | }
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125 |
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126 |
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127 | replace(/\/\*$/g, '\\/' + stardot(opts));
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128 |
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129 | replace(/(?!\/)\*$/g, boxQ);
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130 |
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131 | replace('*', stardot(opts));
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132 |
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133 | replace('?.', '?\\.');
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134 | replace('?:', '?:');
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135 |
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136 | glob.repl(/\?+/g, function (match) {
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137 | var len = match.length;
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138 | if (len === 1) {
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139 | return box;
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140 | }
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141 | return box + '{' + len + '}';
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142 | });
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143 |
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144 |
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145 | glob.repl(/\.([*\w]+)/g, '\\.$1');
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146 |
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147 | glob.repl(/\[\^[\\/]+\]/g, box);
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148 |
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149 | glob.repl(/\/+/g, '\\/');
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150 |
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151 | glob.repl(/\\{2,}/g, '\\');
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152 | }
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153 |
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154 | glob.repl('__QMARK_GROUP__', '(?');
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155 | glob.unescape(glob.pattern);
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156 | glob.repl('__UNESC_STAR__', '*');
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157 | glob.repl('%~', '?');
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158 | glob.repl('%%', '*');
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159 | glob.repl('?.', '?\\.');
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160 | glob.repl('[^\\/]', '[^/]');
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161 | return glob;
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162 | }
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163 |
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164 |
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165 |
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166 |
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167 |
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168 |
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169 |
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170 |
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171 |
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172 |
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173 |
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174 | function expandFilename(glob, opts) {
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175 | var tok = glob.tokens;
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176 | switch (glob.pattern) {
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177 | case '.':
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178 | glob.pattern = '\\.';
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179 | break;
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180 | case '.*':
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181 | glob.pattern = '\\..*';
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182 | break;
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183 | case '*.*':
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184 | glob.pattern = star(opts.dot) + '\\.[^/]*?';
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185 | break;
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186 | case '*':
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187 | glob.pattern = star(opts.dot);
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188 | break;
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189 | default:
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190 | if (tok.path.basename === '*') {
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191 | glob.pattern = star(opts.dot) + '\\' + tok.path.extname;
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192 | } else {
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193 | glob.repl(/(?!\()\?/g, '[^/]');
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194 | if (tok.path.filename.charAt(0) !== '.') {
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195 | opts.dot = true;
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196 | }
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197 | glob.repl('*', star(opts.dot));
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198 | }
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199 | }
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200 |
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201 | glob.repl('__QMARK_GROUP__', '(?');
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202 | glob.unescape(glob.pattern);
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203 | glob.repl('__UNESC_STAR__', '*');
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204 | return glob;
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205 | }
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206 |
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207 |
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208 |
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209 |
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210 |
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211 | function specialCase(glob) {
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212 | if (glob === '\\') {
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213 | return true;
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214 | }
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215 | return false;
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216 | }
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217 |
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218 |
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219 |
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220 |
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221 |
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222 |
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223 |
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224 |
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225 |
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226 |
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227 |
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228 |
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229 |
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230 |
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231 | function collapse(str, ch, repeat) {
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232 | var res = str.split(ch);
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233 | var len = res.length;
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234 |
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235 | var isFirst = res[0] === '';
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236 | var isLast = res[res.length - 1] === '';
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237 | res = res.filter(Boolean);
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238 |
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239 | if (isFirst) {
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240 | res.unshift('');
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241 | }
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242 | if (isLast) {
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243 | res.push('');
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244 | }
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245 | var diff = len - res.length;
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246 | if (repeat && diff >= 1) {
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247 | ch = '(?:' + ch + '){' + (diff + 1) + '}';
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248 | }
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249 | return res.join(ch);
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250 | }
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251 |
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252 |
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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 |
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258 |
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259 |
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260 |
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261 |
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262 |
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263 |
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264 | function optionalGlobstar(glob) {
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265 |
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266 | if (/\w\/\*\*\/\w/.test(glob)) {
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267 | var tmp = glob.split('/**/').join('/');
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268 | glob = '(?:' + tmp + '|' + glob + ')';
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269 |
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270 |
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271 | } else if (/^\*\*\/\w/.test(glob)) {
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272 | glob = glob.split(/^\*\*\//).join('(^|.+\\/)');
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273 | }
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274 | return glob;
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275 | }
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276 |
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277 |
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278 |
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279 |
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280 |
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281 |
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282 |
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283 |
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284 |
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285 |
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286 |
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287 |
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288 |
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289 | function negateSlash(str) {
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290 | var re = /\[\^([^\]]*?)\]/g;
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291 | return str.replace(re, function (match, inner) {
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292 | if (inner.indexOf('/') === -1) {
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293 | inner = '\\/' + inner;
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294 | }
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295 | return '[^' + inner + ']';
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296 | })
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297 | }
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298 |
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299 |
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300 |
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301 |
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302 |
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303 | function balance(str, a, b) {
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304 | var aarr = str.split(a);
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305 | var alen = aarr.join('').length;
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306 | var blen = str.split(b).join('').length;
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307 |
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308 | if (alen !== blen) {
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309 | str = aarr.join('\\' + a);
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310 | return str.split(b).join('\\' + b);
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311 | }
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312 | return str;
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313 | }
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314 |
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315 |
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316 |
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317 |
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318 |
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319 | function esc(str) {
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320 | str = str.split('?').join('%~');
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321 | str = str.split('*').join('%%');
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322 | return str;
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323 | }
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324 |
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325 |
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326 |
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327 |
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328 |
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329 |
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330 |
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331 | var box = '[^/]';
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332 | var boxQ = '[^/]*?';
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333 | var lookahead = '(?=.)';
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334 | var nodot = '(?!\\.)(?=.)';
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335 |
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336 | var ex = {};
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337 | ex.dotfileGlob = '(?:^|\\/)(?:\\.{1,2})(?:$|\\/)';
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338 | ex.stardot = '(?!' + ex.dotfileGlob + ')(?=.)[^/]*?';
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339 | ex.twoStarDot = '(?:(?!' + ex.dotfileGlob + ').)*?';
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340 |
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341 |
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342 |
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343 |
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344 |
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345 |
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346 |
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347 | function star(dotfile) {
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348 | return dotfile ? boxQ : nodot + boxQ;
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349 | }
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350 |
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351 | function dotstarbase(dotfile) {
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352 | var re = dotfile ? ex.dotfileGlob : '\\.';
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353 | return '(?!' + re + ')' + lookahead;
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354 | }
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355 |
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356 | function globstar(opts) {
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357 | if (opts.dot) { return ex.twoStarDot; }
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358 | return '(?:(?!(?:^|\\/)\\.).)*?';
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359 | }
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360 |
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361 | function stardot(opts) {
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362 | return dotstarbase(opts && opts.dot) + '[^/]*?';
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363 | }
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