Go Systems Programming

Using a buffered channel

The name of this implementation will be WCbuffered.go and will be presented in five parts.

The first part of the utility is the following:

package main 
 
import ( 
   "bufio" 
   "fmt" 
   "io" 
   "os" 
   "path/filepath" 
   "regexp" 
) 
 
type File struct { 
   Filename   string 
   Lines      int 
   Words      int 
   Characters int 
   Error      error 
} 

The File structure will keep the counts for each input file. The second chunk of WCbuffered.go has the following Go code:

func monitor(values <-chan File, count int) { var totalWords int = 0 var totalLines int = 0 var totalChars int = 0 for i := 0; i < count; i++ { x := <-values totalWords = totalWords + x.Words totalLines = totalLines + x.Lines totalChars = totalChars + x.Characters if x.Error == nil { fmt.Printf("\t%d\t", ...