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icvm.go
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icvm.go
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package main
import (
"os"
"flag"
"bufio"
"fmt"
"sort"
"github.com/aewens/intcode-vm/pkg/shared"
"github.com/aewens/intcode-vm/pkg/intcode"
)
type Modes struct {
Verbose bool
}
func catch(err error) {
if err != nil {
panic(err)
}
}
func readData() (string, *Modes) {
fileFlag := flag.String("f", "-", "Path of program to run")
verboseFlag := flag.Bool("v", false, "Use verbose mode")
flag.Parse()
var scanner *bufio.Scanner
if *fileFlag == "-" {
scanner = bufio.NewScanner(os.Stdin)
scanner.Scan()
} else {
file, err := os.Open(*fileFlag)
catch(err)
defer file.Close()
scanner = bufio.NewScanner(file)
scanner.Scan()
}
program := scanner.Text()
err := scanner.Err()
catch(err)
return program, &Modes{
Verbose: *verboseFlag,
}
}
func main() {
defer shared.Cleanup()
shared.HandleSigterm()
program, modes := readData()
computer := intcode.New(program)
if modes.Verbose {
fmt.Println("Output:")
}
result := computer.Run()
if modes.Verbose {
addresses := []int{}
for address := range result {
addresses = append(addresses, address)
}
sort.Ints(addresses)
fmt.Println("-------\nMemory:")
for key := range addresses {
value := result[key]
fmt.Printf("%d:\t%d\n", key, value)
}
}
}