tgpl/ch1/dup/1_4.go

52 lines
831 B
Go

package main
import (
"bufio"
"fmt"
"log"
"os"
"strings"
)
func main() {
counts := make(map[string][]string)
file := os.Args[1:]
if len(file) == 0 {
countLines(os.Stdin, counts)
} else {
for _, i := range file {
f, err := os.Open(i)
if err != nil {
log.Print(err)
}
countLines(f, counts)
f.Close()
}
}
for lines, n := range counts {
if len(n) > 1 {
fmt.Printf("%v\t\"%s\"\n", n, strings.Trim(lines, " "))
}
}
}
func contains(slice []string, file string) bool {
for _, i := range slice {
if i == file {
return true
}
}
return false
}
func countLines(f *os.File, counts map[string][]string) {
input := bufio.NewScanner(f)
for input.Scan() {
cur := counts[input.Text()]
if !contains(cur, f.Name()) {
cur = append(cur, f.Name())
counts[input.Text()] = cur
}
}
}