diff --git a/package-lock.json b/package-lock.json index 3b47a914..2649c07b 100644 --- a/package-lock.json +++ b/package-lock.json @@ -46,6 +46,7 @@ "flat": "^6.0.1", "geodesy": "1.1.3", "highlight.js": "^11.9.0", + "ieee754": "^1.1.13", "jimp": "^0.16.13", "jquery": "3.7.1", "js-crc": "^0.2.0", diff --git a/package.json b/package.json index 1ec0218a..f9fac9d4 100644 --- a/package.json +++ b/package.json @@ -122,6 +122,7 @@ "escodegen": "^2.1.0", "esprima": "^4.0.1", "exif-parser": "^0.1.12", + "ieee754": "^1.1.13", "fernet": "^0.3.2", "file-saver": "^2.0.5", "flat": "^6.0.1", diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json index ada7c3a7..231ea760 100644 --- a/src/core/config/Categories.json +++ b/src/core/config/Categories.json @@ -14,6 +14,8 @@ "From Charcode", "To Decimal", "From Decimal", + "To Float", + "From Float", "To Binary", "From Binary", "To Octal", diff --git a/src/core/operations/FromFloat.mjs b/src/core/operations/FromFloat.mjs new file mode 100644 index 00000000..4fe5990e --- /dev/null +++ b/src/core/operations/FromFloat.mjs @@ -0,0 +1,78 @@ +/** + * @author tcode2k16 [tcode2k16@gmail.com] + * @copyright Crown Copyright 2019 + * @license Apache-2.0 + */ + +import Operation from "../Operation.mjs"; +import Utils from "../Utils.mjs"; +import ieee754 from "ieee754"; +import {DELIM_OPTIONS} from "../lib/Delim.mjs"; + +/** + * From Float operation + */ +class FromFloat extends Operation { + + /** + * FromFloat constructor + */ + constructor() { + super(); + + this.name = "From Float"; + this.module = "Default"; + this.description = "Convert from EEE754 Floating Point Numbers"; + this.infoURL = "https://en.wikipedia.org/wiki/IEEE_754"; + this.inputType = "string"; + this.outputType = "byteArray"; + this.args = [ + { + "name": "Endianness", + "type": "option", + "value": [ + "Big Endian", + "Little Endian" + ] + }, + { + "name": "Size", + "type": "option", + "value": [ + "Float (4 bytes)", + "Double (8 bytes)" + ] + }, + { + "name": "Delimiter", + "type": "option", + "value": DELIM_OPTIONS + } + ]; + } + + /** + * @param {string} input + * @param {Object[]} args + * @returns {byteArray} + */ + run(input, args) { + if (input.length === 0) return []; + + const [endianness, size, delimiterName] = args; + const delim = Utils.charRep(delimiterName || "Space"); + const byteSize = size === "Double (8 bytes)" ? 8 : 4; + const isLE = endianness === "Little Endian"; + const mLen = byteSize === 4 ? 23 : 52; + const floats = input.split(delim); + + const output = new Array(floats.length*byteSize); + for (let i = 0; i < floats.length; i++) { + ieee754.write(output, parseFloat(floats[i]), i*byteSize, isLE, mLen, byteSize); + } + return output; + } + +} + +export default FromFloat; diff --git a/src/core/operations/ToFloat.mjs b/src/core/operations/ToFloat.mjs new file mode 100644 index 00000000..b9aef638 --- /dev/null +++ b/src/core/operations/ToFloat.mjs @@ -0,0 +1,80 @@ +/** + * @author tcode2k16 [tcode2k16@gmail.com] + * @copyright Crown Copyright 2019 + * @license Apache-2.0 + */ + +import Operation from "../Operation.mjs"; +import OperationError from "../errors/OperationError.mjs"; +import Utils from "../Utils.mjs"; +import ieee754 from "ieee754"; +import {DELIM_OPTIONS} from "../lib/Delim.mjs"; + +/** + * To Float operation + */ +class ToFloat extends Operation { + + /** + * ToFloat constructor + */ + constructor() { + super(); + + this.name = "To Float"; + this.module = "Default"; + this.description = "Convert to EEE754 Floating Point Numbers"; + this.infoURL = "https://en.wikipedia.org/wiki/IEEE_754"; + this.inputType = "byteArray"; + this.outputType = "string"; + this.args = [ + { + "name": "Endianness", + "type": "option", + "value": [ + "Big Endian", + "Little Endian" + ] + }, + { + "name": "Size", + "type": "option", + "value": [ + "Float (4 bytes)", + "Double (8 bytes)" + ] + }, + { + "name": "Delimiter", + "type": "option", + "value": DELIM_OPTIONS + } + ]; + } + + /** + * @param {byteArray} input + * @param {Object[]} args + * @returns {string} + */ + run(input, args) { + const [endianness, size, delimiterName] = args; + const delim = Utils.charRep(delimiterName || "Space"); + const byteSize = size === "Double (8 bytes)" ? 8 : 4; + const isLE = endianness === "Little Endian"; + const mLen = byteSize === 4 ? 23 : 52; + + if (input.length % byteSize !== 0) { + throw new OperationError(`Input is not a multiple of ${byteSize}`); + } + + const output = []; + for (let i = 0; i < input.length; i+=byteSize) { + output.push(ieee754.read(input, i, isLE, mLen, byteSize)); + } + return output.join(delim); + } + +} + +export default ToFloat; diff --git a/tests/operations/index.mjs b/tests/operations/index.mjs index ed359bc7..9f9be2b7 100644 --- a/tests/operations/index.mjs +++ b/tests/operations/index.mjs @@ -62,6 +62,7 @@ import "./tests/DefangIP.mjs"; import "./tests/ELFInfo.mjs"; import "./tests/Enigma.mjs"; import "./tests/ExtractEmailAddresses.mjs"; +import "./tests/Float.mjs"; import "./tests/FileTree.mjs"; import "./tests/FletcherChecksum.mjs"; import "./tests/Fork.mjs"; diff --git a/tests/operations/tests/Float.mjs b/tests/operations/tests/Float.mjs new file mode 100644 index 00000000..3977834c --- /dev/null +++ b/tests/operations/tests/Float.mjs @@ -0,0 +1,164 @@ +/** + * Float tests. + * + * @author tcode2k16 [tcode2k16@gmail.com] + * + * @copyright Crown Copyright 2019 + * @license Apache-2.0 + */ + +import TestRegister from "../../lib/TestRegister.mjs"; + + +TestRegister.addTests([ + { + name: "To Float: nothing", + input: "", + expectedOutput: "", + recipeConfig: [ + { + op: "From Hex", + args: ["Auto"] + }, + { + op: "To Float", + args: ["Big Endian", "Float (4 bytes)", "Space"] + } + ], + }, + { + name: "To Float (Big Endian, 4 bytes): 0.5", + input: "3f0000003f000000", + expectedOutput: "0.5 0.5", + recipeConfig: [ + { + op: "From Hex", + args: ["Auto"] + }, + { + op: "To Float", + args: ["Big Endian", "Float (4 bytes)", "Space"] + } + ] + }, + { + name: "To Float (Little Endian, 4 bytes): 0.5", + input: "0000003f0000003f", + expectedOutput: "0.5 0.5", + recipeConfig: [ + { + op: "From Hex", + args: ["Auto"] + }, + { + op: "To Float", + args: ["Little Endian", "Float (4 bytes)", "Space"] + } + ] + }, + { + name: "To Float (Big Endian, 8 bytes): 0.5", + input: "3fe00000000000003fe0000000000000", + expectedOutput: "0.5 0.5", + recipeConfig: [ + { + op: "From Hex", + args: ["Auto"] + }, + { + op: "To Float", + args: ["Big Endian", "Double (8 bytes)", "Space"] + } + ] + }, + { + name: "To Float (Little Endian, 8 bytes): 0.5", + input: "000000000000e03f000000000000e03f", + expectedOutput: "0.5 0.5", + recipeConfig: [ + { + op: "From Hex", + args: ["Auto"] + }, + { + op: "To Float", + args: ["Little Endian", "Double (8 bytes)", "Space"] + } + ] + }, + { + name: "From Float: nothing", + input: "", + expectedOutput: "", + recipeConfig: [ + { + op: "From Float", + args: ["Big Endian", "Float (4 bytes)", "Space"] + }, + { + op: "To Hex", + args: ["None"] + } + ] + }, + { + name: "From Float (Big Endian, 4 bytes): 0.5", + input: "0.5 0.5", + expectedOutput: "3f0000003f000000", + recipeConfig: [ + { + op: "From Float", + args: ["Big Endian", "Float (4 bytes)", "Space"] + }, + { + op: "To Hex", + args: ["None"] + } + ] + }, + { + name: "From Float (Little Endian, 4 bytes): 0.5", + input: "0.5 0.5", + expectedOutput: "0000003f0000003f", + recipeConfig: [ + { + op: "From Float", + args: ["Little Endian", "Float (4 bytes)", "Space"] + }, + { + op: "To Hex", + args: ["None"] + } + ] + }, + { + name: "From Float (Big Endian, 8 bytes): 0.5", + input: "0.5 0.5", + expectedOutput: "3fe00000000000003fe0000000000000", + recipeConfig: [ + { + op: "From Float", + args: ["Big Endian", "Double (8 bytes)", "Space"] + }, + { + op: "To Hex", + args: ["None"] + } + ] + }, + { + name: "From Float (Little Endian, 8 bytes): 0.5", + input: "0.5 0.5", + expectedOutput: "000000000000e03f000000000000e03f", + recipeConfig: [ + { + op: "From Float", + args: ["Little Endian", "Double (8 bytes)", "Space"] + }, + { + op: "To Hex", + args: ["None"] + } + ] + } +]);