Introduce registry

We introduce a registry that contains maps to builder functions. These
builder functions return the interface implementation of the modules
specified in the configuration.

We also make the input module type use the registry. All other module
types still have to be converted.

1 files changed, 46 insertions, 0 deletions

diff --git a/input/stdin/stdin.go b/input/stdin/stdin.go
new file mode 100644
index 0000000..fa4d21f
--- /dev/null
+++ b/input/stdin/stdin.go
@@ -0,0 +1,46 @@
+package stdin
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/Shugyousha/stasher/input"
+	"github.com/Shugyousha/stasher/registry"
+	"github.com/Shugyousha/stasher/work"
+)
+
+func init() {
+	registry.Inputregistry["input"] = New
+}
+
+type StdinInput struct {
+	retchan chan *work.Work
+}
+
+func New(map[string]string) input.Input {
+	return &StdinInput{}
+}
+
+func (i *StdinInput) Start() chan *work.Work {
+	i.retchan = make(chan *work.Work, 100)
+	r := bufio.NewReader(os.Stdin)
+
+	go func() {
+		for {
+			bs, err := r.ReadBytes(byte('\n'))
+			if err == io.EOF {
+				break
+			}
+			if err != nil {
+				fmt.Printf("Error when reading input from Stdin: %q", err)
+				os.Exit(1)
+			}
+			i.retchan <- &work.Work{Data: bs}
+		}
+		close(i.retchan)
+	}()
+
+	return i.retchan
+}