42 lines
1.6 KiB
JavaScript
42 lines
1.6 KiB
JavaScript
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function applyPaths(paths, name) {
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// most specific (most number of slashes in path) match wins
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var pathMatch = '', wildcard, maxWildcardPrefixLen = 0;
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// check to see if we have a paths entry
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for (var p in paths) {
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if (paths.hasOwnProperty && !paths.hasOwnProperty(p))
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continue;
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// exact path match
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if (p.indexOf('*') === -1) {
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if (name == p)
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return paths[p];
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// support trailing / in paths rules
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else if (name.substr(0, p.length - 1) == p.substr(0, p.length - 1) && (name.length < p.length || name[p.length - 1] == p[p.length - 1]) && (paths[p][paths[p].length - 1] == '/' || paths[p] == '')) {
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return paths[p].substr(0, paths[p].length - 1) + (name.length > p.length ? (paths[p] && '/' || '') + name.substr(p.length) : '');
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}
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}
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// wildcard path match
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else {
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var pathParts = p.split('*');
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if (pathParts.length > 2)
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throw new TypeError('Only one wildcard in a path is permitted');
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var wildcardPrefixLen = pathParts[0].length;
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if (wildcardPrefixLen >= maxWildcardPrefixLen &&
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name.substr(0, pathParts[0].length) == pathParts[0] &&
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name.substr(name.length - pathParts[1].length) == pathParts[1]) {
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maxWildcardPrefixLen = wildcardPrefixLen;
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pathMatch = p;
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wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
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}
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}
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}
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var outPath = paths[pathMatch];
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if (typeof wildcard == 'string')
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outPath = outPath.replace('*', wildcard);
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return outPath;
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}
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