formatter

2 files changed, 34 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index c94b1c4..ba9e3e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 markov
+fmt
diff --git a/fmt.go b/fmt.go
new file mode 100644
index 0000000..e54a1d1
--- /dev/null
+++ b/fmt.go
@@ -0,0 +1,33 @@
+// This program wraps its input into short lines.
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+const maxWidth = 80 // maximum number of characters per line
+
+func main() {
+	input := bufio.NewScanner(os.Stdin)
+	input.Split(bufio.ScanWords)
+	width := 0
+	for input.Scan() {
+		word := input.Text()
+
+		if width+1+len(word) > maxWidth {
+			fmt.Println()
+			width = 0
+		}
+
+		if width == 0 {
+			fmt.Print(word)
+			width += len(word)
+		} else {
+			fmt.Printf(" %s", word)
+			width += 1 + len(word)
+		}
+	}
+	fmt.Println()
+}