From 0a9924e96cba33b70343642c6994aed425ec4a98 Mon Sep 17 00:00:00 2001
From: BraydonKains <kainsbraydon@gmail.com>
Date: Fri, 19 May 2023 22:22:44 -0400
Subject: [PATCH] started muld

---
 cmd/mld/main.go             |  7 ----
 cmd/muld/main.go            | 70 +++++++++++++++++++++++++++++++++++++
 internal/experiment/main.go | 24 -------------
 3 files changed, 70 insertions(+), 31 deletions(-)
 delete mode 100644 cmd/mld/main.go
 create mode 100644 cmd/muld/main.go
 delete mode 100644 internal/experiment/main.go

diff --git a/cmd/mld/main.go b/cmd/mld/main.go
deleted file mode 100644
index e64ea4a..0000000
--- a/cmd/mld/main.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package main
-
-import "fmt"
-
-func main() {
-	fmt.Println("not ready yet")
-}
diff --git a/cmd/muld/main.go b/cmd/muld/main.go
new file mode 100644
index 0000000..d885868
--- /dev/null
+++ b/cmd/muld/main.go
@@ -0,0 +1,70 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"runtime"
+
+	"github.com/RageCage64/multilinediff"
+)
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func run() error {
+	if (len(os.Args) - 1) != 2 {
+		return fmt.Errorf("requires exactly two arguments, got %d", len(os.Args))
+	}
+
+	leftPath := os.Args[1]
+	rightPath := os.Args[2]
+
+	leftContent, err := readContent(leftPath)
+	if err != nil {
+		return err
+	}
+	rightContent, err := readContent(rightPath)
+	if err != nil {
+		return err
+	}
+
+	lineSep := "\n"
+	if runtime.GOOS == "windows" {
+		lineSep = "\r\n"
+	}
+
+	fmt.Println(multilinediff.Diff(leftContent, rightContent, lineSep))
+
+	return nil
+}
+
+func readContent(path string) (string, error) {
+	if path == "-" {
+		return readFromStdin()
+	}
+	content, err := os.ReadFile(path)
+	return string(content), err
+}
+
+func readFromStdin() (string, error) {
+	stdin := bufio.NewReader(os.Stdin)
+	data := []byte{}
+	for {
+		b, err := stdin.ReadByte()
+		if err != nil {
+			if err == io.EOF {
+				break
+			} else {
+				return "", err
+			}
+		}
+		data = append(data, b)
+	}
+	return string(data), nil
+}
diff --git a/internal/experiment/main.go b/internal/experiment/main.go
deleted file mode 100644
index e725dd6..0000000
--- a/internal/experiment/main.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/RageCage64/multilinediff"
-)
-
-func main() {
-	a := `a
-b
-c
-diff`
-	b := `a b
-c
-f
-f
-f
-diff`
-	diff, count := multilinediff.Diff(a, b, "\n")
-	fmt.Println(count)
-	fmt.Println("--------")
-	fmt.Println(diff)
-}