func loadDictionary(fileName string) dictionary {
dict := dictionary{}
//read file lines
input := file.FileLines(fileName)
// break out first line, load its values into size
dict.size = intSeparate(input[0])
input = input[1:]
// break out second line, load it into basic
dict.basic = intSeparate(input[0])
input = input[1:]
// break out third line, load it into nonBasic
dict.nonBasic = intSeparate(input[0])
input = input[1:]
// break out fourth line, load it into coeff
dict.coeff = floatSeparate(input[0])
input = input[1:]
// for next size[0] lines, load into matrix
dict.matrix = make([][]float64, dict.size[0])
for i := 0; i < dict.size[0]; i++ {
dict.matrix[i] = floatSeparate(input[0])
input = input[1:]
}
// load final line into objective
dict.objective = floatSeparate(input[0])
return dict
}
// Function to read encryption keys from a file
func readKey(fileName string) (*big.Int, *big.Int, error) {
// Get the contents of file as a slice of strings
keyStrings, err := file.FileLines(fileName)
// If we ran into an i/o error, tell user and return
if err != nil {
fmt.Println("\nError, key could not be read from file")
return nil, nil, err
}
// indices 1 and 4 of the keyfile will hold the modulus and exponent
modulus, _ := big.NewInt(0).SetString(keyStrings[1], 0)
exponent, _ := big.NewInt(0).SetString(keyStrings[4], 0)
// Return to the user
return modulus, exponent, nil
}
func loadGraph() Graph {
fileLines := file.FileLines(fileToken)
dataLine := strings.Split(fileLines[0], "\n")
dataLine = strings.Split(dataLine[0], "\r")
nodeCount, _ := strconv.Atoi(dataLine[0])
fileLines = fileLines[1:]
graph := make(Graph, nodeCount)
for i, v := range fileLines {
graph[i] = readNode(v)
}
graph = calculateEdges(graph)
return graph
}
// Function to read in an encrypted ciphertext from a file
func readCipher(fileName string) []*big.Int {
// Read the file in as a slice of strings
cipherStrings, err := file.FileLines(fileName)
// If there was an error, let the user know and return
if err != nil {
fmt.Println("\nError, ciphertext could not be read from file!")
return nil
}
// Create a slice of big Ints to hold our ciphertext
cipherText := make([]*big.Int, 0)
// Every second line, except the last, should hold an encrypted
// chunk of data - convert them to big Ints and store them
for i := 1; i < len(cipherStrings)-2; i += 2 {
next, _ := big.NewInt(0).SetString(cipherStrings[i], 0)
cipherText = append(cipherText, next)
}
return cipherText
}
