/mercurial/hgweb_golang.cgi: src/tac.go comparison

golang repository.

comparison

equal deleted inserted replaced

--1:000000000000
+:de451fa0c9cd
+package main
+import (
+"bufio"
+"flag"
+"fmt"
+"os"
+)
+func main() {
+flag.Parse()
+files := flag.Args()
+var lines []string
+// Input
+if len( files ) == 0 {
+lines = ReverseLines( os.Stdin, nil )
+} else {
+for _, arg := range files {
+f, err := os.Open( arg )
+if err != nil {
+fmt.Fprintf( os.Stderr, "tac : %v\n", err )
+continue
+}
+l := ReverseLines( f, nil )
+f.Close()
+lines = append( lines, l... )
+}
+}
+// Output
+for _, line := range lines {
+fmt.Println( line )
+}
+}
+func ReverseLines( f *os.File, l []string ) []string {
+input := bufio.NewScanner( f )
+for input.Scan() {
+l = append( l, input.Text() )
+}
+for i, j := 0, len(l) - 1; i < j; i, j = i + 1, j - 1 {
+l[i], l[j] = l[j], l[i]
+}
+return l
+}

Mercurial > mercurial > hgweb_golang.cgi