47 lines
794 B
Go
47 lines
794 B
Go
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package main
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import "fmt"
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import "io"
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import "io/ioutil"
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import "log"
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import "os"
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import "strings"
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var err error
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var reader io.Reader
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func openFile(path *string) *os.File {
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f, err := os.Open(os.Args[1])
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if err != nil {
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log.Fatalln(err)
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}
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return f
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}
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func readMe(r *io.Reader) {
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if content, err := ioutil.ReadAll(*r); err != nil {
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log.Fatalln(err)
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} else {
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fmt.Printf("%s", content)
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}
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}
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func main() {
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if len(os.Args) <= 1 {
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var content string
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if _, err := fmt.Scanln(&content); err != nil {
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log.Fatalln(err)
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}
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reader = strings.NewReader(content)
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} else {
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readers := []io.Reader{}
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for i := 1; i < len(os.Args); i++ {
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f := openFile(&os.Args[i])
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defer f.Close()
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readers = append(readers, f)
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}
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reader = io.MultiReader(readers...)
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}
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readMe(&reader)
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}
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