superchild

<!doctype html> <html lang="en"> <head> <title>Code coverage report for lib/json-sieve.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../prettify.css" /> <link rel="stylesheet" href="../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../index.html">all files</a> / <a href="index.html">lib/</a> json-sieve.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 100% Statements 42/42 </div> <div class='fl pad1y space-right2'> 88% Branches 22/25 </div> <div class='fl pad1y space-right2'> 100% Functions 5/5 </div> <div class='fl pad1y space-right2'> 100% Lines 42/42 </div> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112</td><td class="line-coverage quiet">                                                  1×         1× 12× 12×     1×     1× 16× 16×           1× 16× 16× 16× 16× 21× 21× 21×   16× 16× 13×             1×   24×       24× 24×   24× 3× 3× 3×   3× 3×         21× 4× 4× 4×   4× 4×           17×         1× 12× 3× 3×   12×       1×  </td><td class="text"><pre class="prettyprint lang-js">// ## JSONSieve // // Picks out line-delimited JSON arrays and objects in a data stream, and // parses the rest into lines. // // ### Usage // // var sieve = new JSONSieve(); // process.stdin.on('data', function(chunk) { // sieve.observe(chunk); // }); // process.stdin.on('end', function() { // sieve.close(); // important // }); // sieve.on('stdout_line', ...); // sieve.on('stderr_data', ...); // sieve.on('json_object', ...); // sieve.on('json_array', ...); // // `JSONSieve` is an `EventEmitter`. // // __Warning:__ Note that JSON will not be parsed if it // is "pretty-printed" with whitespace. // // ### Source var EventEmitter = require('events') , util = require('util') ;     function JSONSieve() { EventEmitter.call(this); this.lineBuffer_ = ''; }   util.inherits(JSONSieve, EventEmitter);   // After construction, chunked data may be passed to `observe()`. JSONSieve.prototype.observe = function(dataStr) { this.lineBuffer_ += dataStr; this.parseLineBuffer_(); };   // On every chunk, we add the new data to the existing line buffer, // and attempting to find newlines to split on. If there are no newlines, // then assume that the last chunk we got was a partial line. JSONSieve.prototype.parseLineBuffer_ = function() { var lines = []; var dataStr = this.lineBuffer_; var idx = dataStr.indexOf('\n'); while(idx >= 0) { lines.push(dataStr.substr(0, idx)); // Excludes terminating new line. dataStr = dataStr.substr(idx + 1); // Skip newline. idx = dataStr.indexOf('\n'); } this.lineBuffer_ = dataStr; // Linebuffer contains leftovers. if (lines.length) { lines.forEach(this.processLine_, this); } };   // For every line parsed out of the stream, attempt to decode JSON strings // and arrays. A decision is made here not to attempt to decode JSON strings // and numbers, because they are too accidentally common in most output streams. JSONSieve.prototype.processLine_ = function(line) { // Allow some fuzz in the input in the form of leading and trailing whitespace. var trimmedLine = line.replace(/^[\s\u0000-\u001f]*|[\s\u0000-\u001f]*$/g, '');   // Check for necessary conditions for line-delimited JSON objects and arrays, // even empty ones. var len = trimmedLine.length; Eif (len >= 2) { // Test for possible line-delimited JSON objects. if (trimmedLine[0] === '{' && trimmedLine[len - 1] === '}') { var jsonObj; try { jsonObj = JSON.parse(trimmedLine); } catch(e) { } // Nope, not a JSON object. Eif (jsonObj && typeof jsonObj == 'object') { return this.emit('json_object', jsonObj); } }   // Test for possible line-delimited JSON arrays. if (trimmedLine[0] === '[' && trimmedLine[len - 1] === ']') { var jsonArr; try { jsonArr = JSON.parse(trimmedLine); } catch(e) { } // Nope, not a JSON array. Eif (jsonArr && typeof jsonArr == 'object' && 'length' in jsonArr) { return this.emit('json_array', jsonArr); } } }   // Emit as a raw line. return this.emit('stdout_line', line); };   // Finish up any remaining data remaining in the line buffer, usually the // last line of output if it does not have a terminating newline. JSONSieve.prototype.close = function(cb) { if (this.lineBuffer_) { this.processLine_(this.lineBuffer_); delete this.lineBuffer_; } return (cb && cb()); };     module.exports = JSONSieve;  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Tue Sep 27 2016 09:01:09 GMT-0700 (PDT) </div> </div> <script src="../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../sorter.js"></script> </body> </html>