Add a couple of tiny little go utilitiesv0.0.1

1 files changed, 41 insertions, 0 deletions

diff --git a/go/cmd/chardump/main.go b/go/cmd/chardump/main.go
new file mode 100644
index 0000000..c275205
--- /dev/null
+++ b/go/cmd/chardump/main.go
@@ -0,0 +1,41 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"strconv"
+)
+
+var Logger = log.New(os.Stderr, "", 0)
+
+func dumpString(w io.Writer, s string) {
+	n := 0
+	for _, char := range s { // I don't care about the byte number, just chars...
+		// https://go.dev/ref/spec#Rune_literals
+		fmt.Fprintf(w,
+			"Number: %-4d Char: %-6s Unicode: %U Hex Bytes: %+v\n",
+			n,
+			strconv.QuoteRune(char),
+			char,
+			[]byte(string(char)))
+		n++
+	}
+}
+
+func main() {
+	buf := &bytes.Buffer{}
+
+	n, err := io.Copy(buf, os.Stdin)
+	if err != io.EOF && err != nil {
+		Logger.Fatalf("Failed to read stdin: %s\n", err)
+	}
+
+	Logger.Println("------------------------")
+	Logger.Printf("Read in %d bytes\n", n)
+	Logger.Println("------------------------")
+
+	dumpString(os.Stdout, buf.String())
+}