94 lines
4.1 KiB
Go
94 lines
4.1 KiB
Go
package flags
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import (
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"flag"
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"fmt"
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"os"
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"runtime"
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"strings"
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)
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// Parse command-line parameters, test input, store them in the Controller.
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func (flags *Flags) ParseFlags() {
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// Define parameters
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flag.StringVar(&flags.Controller.Row1, "row1", "000000000", "1st row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row2, "row2", "000000000", "2nd row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row3, "row3", "000000000", "4rd row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row4, "row4", "000000000", "4th row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row5, "row5", "000000000", "5th row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row6, "row6", "000000000", "6th row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row7, "row7", "000000000", "7th row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row8, "row8", "000000000", "8th row of the sudoku puzzle.")
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flag.StringVar(&flags.Controller.Row9, "row9", "000000000", "9th row of the sudoku puzzle.")
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flag.IntVar(&flags.Controller.NumCPUs, "numcpu", runtime.NumCPU(), "Number of CPU cores to assign to this task.")
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flag.IntVar(&flags.Controller.Split, "split", 1, "Split the tasks in n parts. This depends on the availability of the first row.")
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flag.IntVar(&flags.Controller.Part, "part", 1, "Process part x in n parts. Cannot be lower than 1, or higher than specified in split.")
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flag.StringVar(&flags.Controller.Output, "output", "human", "Type of output. 'human' for human readable. 'flat' for flat as stored in memory output. 'json' for JSON output.")
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flag.StringVar(&flags.Controller.Print, "print", "short", "'short': normal output;'long': normal output with timestamps; 'silent': Only print the results;")
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// Parse the flags
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flag.Parse()
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// Process any changes to the CPU usage.
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if flags.Controller.NumCPUs <= 0 {
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fmt.Printf("ERROR: Number of CPU cores must be 1 or higher.\n\n")
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flags.printUsage()
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os.Exit(1)
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}
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if flags.Controller.NumCPUs != runtime.NumCPU() {
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runtime.GOMAXPROCS(flags.Controller.NumCPUs)
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}
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// Process rows
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if flags.Controller.Row1 == "000000000" || flags.Controller.Row2 == "000000000" || flags.Controller.Row3 == "000000000" || flags.Controller.Row4 == "000000000" || flags.Controller.Row5 == "000000000" || flags.Controller.Row6 == "000000000" || flags.Controller.Row7 == "000000000" || flags.Controller.Row8 == "000000000" || flags.Controller.Row9 == "000000000" {
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fmt.Printf("ERROR: All parameters must be entered.\n\n")
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flags.printUsage()
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os.Exit(1)
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}
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// Validate the row (never trust user input)
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flags.validateRow("row1", flags.Controller.Row1)
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flags.validateRow("row2", flags.Controller.Row2)
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flags.validateRow("row3", flags.Controller.Row3)
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flags.validateRow("row4", flags.Controller.Row4)
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flags.validateRow("row5", flags.Controller.Row5)
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flags.validateRow("row6", flags.Controller.Row6)
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flags.validateRow("row7", flags.Controller.Row7)
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flags.validateRow("row8", flags.Controller.Row8)
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flags.validateRow("row9", flags.Controller.Row9)
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// Process workload splitting
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// Ensure split and part are 1 or higher
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if flags.Controller.Split <= 0 || flags.Controller.Part <= 0 {
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fmt.Printf("ERROR: '-split' and '-part' need to be 1 or higher.\n")
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flags.printUsage()
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os.Exit(1)
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}
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// Ensure part is between 1 and split
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if flags.Controller.Part > flags.Controller.Split {
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fmt.Printf("ERROR: '-part' cannot be bigger than `-split`.\n")
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flags.printUsage()
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os.Exit(1)
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}
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// Process output selection
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flags.Controller.Output = strings.ToLower(flags.Controller.Output)
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if flags.Controller.Output != "human" && flags.Controller.Output != "flat" && flags.Controller.Output != "json" {
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fmt.Printf("ERROR: Invalid output, can only be 'human' or 'flat' or 'json'.\n")
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flags.printUsage()
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os.Exit(1)
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}
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// Process print selection
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flags.Controller.Print = strings.ToLower(flags.Controller.Print)
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if flags.Controller.Print != "short" && flags.Controller.Print != "long" && flags.Controller.Print != "silent" {
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fmt.Printf("ERROR: Invalid Print, can only be 'short' or 'long' or 'silent'.\n")
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flags.printUsage()
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os.Exit(1)
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}
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}
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