Basic ls.

Author: drn

main.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+  "os"
+  "fmt"
+  "log"
+  "bytes"
+  "strings"
+  "io/ioutil"
+  "golang.org/x/crypto/ssh/terminal"
+)
+
+func main() {
+  width, _, err := terminal.GetSize(int(os.Stdout.Fd()))
+  if err != nil {
+    fmt.Printf("error getting terminal dimensions\n")
+    fmt.Printf("%v\n", err)
+    os.Exit(1)
+  }
+
+  // fmt.Println(width)
+
+  var buffer bytes.Buffer
+
+  files, err := ioutil.ReadDir("./")
+  if err != nil { log.Fatal(err) }
+
+  maxSize := 0
+
+  for _, f := range files {
+    // if this is a .dotfile and '-a' is not specified, skip it
+    if []rune(f.Name())[0] == rune('.') {
+      continue
+    }
+    name := f.Name()
+    size := len(name)
+    if maxSize < size { maxSize = size }
+  }
+
+  count := 0
+
+  for _, f := range files {
+    // if this is a .dotfile and '-a' is not specified, skip it
+    if []rune(f.Name())[0] == rune('.') {
+      continue
+    }
+
+    name := f.Name()
+    size := len(name)
+
+    difference := maxSize - size
+
+
+    if count + maxSize + 1 > width {
+      buffer.WriteString("\n")
+      count = 0
+    }
+
+    count += maxSize + 1
+
+    buffer.WriteString(name)
+    buffer.WriteString(strings.Repeat(" ", difference))
+    buffer.WriteRune(' ')
+  }
+
+  // fmt.Println(maxSize)
+
+  fmt.Println(buffer.String())
+
+}