42 lines
1.0 KiB
JavaScript
42 lines
1.0 KiB
JavaScript
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var CONSTANTS = require("./constants");
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function parser(arrayBuffer) {
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var data = {};
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var i = 0;
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var arr = new Int8Array(arrayBuffer);
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// Parse header
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data.type = String.fromCharCode.apply(
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null,
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arr.slice(i, CONSTANTS.HEADER.length)
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);
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if (data.type !== CONSTANTS.HEADER) {
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throw new Error("Invalid .eqf file.");
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}
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i += CONSTANTS.HEADER.length;
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// Skip "<ctrl-z>!--"
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i += 4;
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// Get the presets
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data.presets = [];
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while (i < arr.length) {
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var preset = {};
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// Get the name
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var nameStart = i;
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var nameEnd = nameStart + 257; // Str is fixed length
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// Str is null terminated
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while (arr[i] !== 0 && i <= nameEnd) {
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i++;
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}
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preset.name = String.fromCharCode.apply(null, arr.slice(nameStart, i));
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i = nameEnd; // Skip over any unused bytes
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// Get the levels
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CONSTANTS.PRESET_VALUES.forEach(function(valueName) {
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preset[valueName] = 64 - arr[i++]; // Adjust for inverse values
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});
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data.presets.push(preset);
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}
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return data;
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}
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module.exports = parser;
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