1 files changed, 96 insertions, 0 deletions
diff --git a/copy.go b/copy.go
new file mode 100644
index 0000000..72d9635
--- /dev/null
+++ b/copy.go
@@ -0,0 +1,96 @@
+package planr
+
+import (
+	"fmt"
+        "os"
+        "path/filepath"
+	"io"
+)
+
+
+func Exists(filePath string) bool {
+    if _, err := os.Stat(filePath); os.IsNotExist(err) {
+        return false
+    }
+
+    return true
+}
+
+func CreateIfNotExists(dir string, perm os.FileMode) error {
+    if Exists(dir) {
+        return nil
+    }
+
+    if err := os.MkdirAll(dir, perm); err != nil {
+        return fmt.Errorf("failed to create directory: '%s', error: '%s'", dir, err.Error())
+    }
+
+    return nil
+}
+
+func CopySymlink(src, dst string, perm os.FileMode) error {
+    link, err := os.Readlink(src)
+    if err != nil {
+        return err
+    }
+
+    if err := os.Chmod(src, perm); err != nil {
+      return err
+    }
+
+    return os.Symlink(link, dst)
+}
+
+func Copy(srcFile, dstFile string, perm os.FileMode) error {
+    src, err := os.Open(srcFile)
+    if err != nil {
+      return err
+    }
+
+    defer src.Close()
+
+    dst, err := os.OpenFile(dstFile, os.O_CREATE | os.O_WRONLY | os.O_TRUNC, perm)
+    if err != nil {
+        return err
+    }
+
+    defer dst.Close()
+
+    _, err = io.Copy(dst, src)
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+
+func RecursiveCopyDir(source, destination string) error {
+    err := filepath.Walk(source, func(path string, info os.FileInfo, err error) error {
+        relPath, err := filepath.Rel(source, path)
+
+        if err != nil {
+          return err
+        }
+
+	dst := filepath.Join(destination, relPath)
+        src  := filepath.Join(source, relPath)
+
+        mode := info.Mode()
+
+        if relPath == "" {
+            return nil
+        }
+
+        switch info.Mode() & os.ModeType {
+          case os.ModeDir:
+            return CreateIfNotExists(dst, mode)
+          case os.ModeSymlink:
+            return CopySymlink(src, dst, mode)
+          default:
+            return Copy(src, dst, mode)
+        }
+    });
+
+    return err
+}