game-battleship
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A battleship program
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<h1 class="page-title">Source: fileReader.js</h1>
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<pre class="prettyprint source linenums"><code>const assert = require("assert");
const readline = require("readline");
const fs = require("fs");
/**
* This function would read file from a path line by line and populate the filecontent
* object for further processing
* @param {string} filePath
* @param {Readable} testStream : sole purpose of this stream is for testing
* @returns {Promise} this would resolve when all of the content is read from the file
*/
function fileReader(filePath, testStream) {
return new Promise((resolve, reject) => {
try {
if (!testStream) {
assert(filePath, "input file path is empty");
}
const fileContent = {
"ships": []
};
let lineCount = 0;
const lineReader = readline.createInterface({
"input": testStream || fs.createReadStream(filePath)
});
lineReader.on("line", function (line) {
lineCount++;
switch (true) {
case (lineCount === 1):
fileContent.AreaDimensions = line.trim();
break;
case (lineCount === 2):
fileContent.shipCount = parseInt(line.trim(), 10);
break;
case (lineCount > 2 && lineCount <= (fileContent.shipCount + 2)):
fileContent.ships.push(line.trim());
break;
case (lineCount === (fileContent.shipCount + 3)):
fileContent.player1Targets = line.trim();
break;
case (lineCount === (fileContent.shipCount + 4)):
fileContent.player2Targets = line.trim();
break;
default:
break;
}
});
lineReader.on("close", function () {
return resolve(fileContent);
});
} catch (error) {
console.log("Error reading file, Please check the file path", error);
reject(error);
}
});
}
module.exports = fileReader;
</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Global</h3><ul><li><a href="global.html#fileReader">fileReader</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Tue Feb 19 2019 00:45:50 GMT+0530 (India Standard Time)
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