54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
#!/usr/bin/env node
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var json = '';
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if (require.main === module) {
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process.stdin.setEncoding('utf8');
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process.stdin.on('readable', () => {
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const chunk = process.stdin.read();
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if (chunk !== null) {
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json += chunk;
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}
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});
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process.stdin.on('end', () => {
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var obj = JSON.parse(json);
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var argv = process.argv.slice(2);
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extractPaths(obj, argv).forEach(function(line) {
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console.log(line);
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})
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});
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}
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function extractPaths(obj, paths) {
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var lines = [];
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paths.forEach(function(exp) {
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var objs = obj instanceof Array ? [].concat(obj) : [obj];
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exp.split('.').forEach(function(name) {
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for(var i = 0; i < objs.length; i++) {
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var o = objs[i];
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if (o instanceof Array) {
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// Expand and do over
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objs = objs.slice(0, i).concat(o).concat(objs.slice(i+1, objs.length));
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i--;
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} else {
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name.split("=").forEach(function(name, index) {
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if (index == 0) {
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objs[i] = o = o[name];
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} else if (name.charAt(0) == '^') {
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if (o.indexOf(name.substr(1)) !== 0) {
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objs.splice(i, 1);
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i--;
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}
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}
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});
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}
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}
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});
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lines.push(objs.join("|"));
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});
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return lines;
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}
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exports.extractPaths = extractPaths; |