add import+export, json output, humanize wide output, fixes

output/single.go

@@ -0,0 +1,60 @@
+package output
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/tlinden/anydb/app"
+	"github.com/tlinden/anydb/cfg"
+	"golang.org/x/term"
+)
+
+func Print(writer io.Writer, conf *cfg.Config, entry *app.DbEntry) error {
+	if conf.Mode != "" {
+		// consider this to be a file
+		fd, err := os.OpenFile(conf.Mode, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
+		if err != nil {
+			return err
+		}
+		defer fd.Close()
+
+		if len(entry.Bin) > 0 {
+			// binary file content
+			_, err = fd.Write(entry.Bin)
+		} else {
+			val := entry.Value
+			if !strings.HasSuffix(val, "\n") {
+				// always add a terminal newline
+				val += "\n"
+			}
+
+			_, err = fd.Write([]byte(val))
+		}
+
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+
+	isatty := term.IsTerminal(int(os.Stdout.Fd()))
+	if len(entry.Bin) > 0 {
+		if isatty {
+			fmt.Println("binary data omitted")
+		} else {
+			os.Stdout.Write(entry.Bin)
+		}
+	} else {
+		fmt.Print(entry.Value)
+
+		if !strings.HasSuffix(entry.Value, "\n") {
+			// always add a terminal newline
+			fmt.Println()
+		}
+	}
+
+	return nil
+}