new file manager

Added CasaOS own file manager, now you can browse, upload, download files from the system, even edit code online, preview photos and videos through it. It will appear in the first position of Apps.
Added CPU core count display and memory capacity display.

pkg/utils/file/file.go

@@ -1,12 +1,15 @@
 package file
 
 import (
+	"bufio"
 	"fmt"
 	"io"
 	"io/ioutil"
 	"mime/multipart"
 	"os"
 	"path"
+	"strconv"
+	"strings"
 )
 
 // GetSize get the file size
@@ -137,6 +140,21 @@ func CreateFile(path string) error {
 	return nil
 }
 
+func CreateFileAndWriteContent(path string, content string) error {
+	file, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE, 0666)
+	if err != nil {
+		return err
+	}
+
+	defer file.Close()
+	write := bufio.NewWriter(file)
+
+	write.WriteString(content)
+
+	write.Flush()
+	return nil
+}
+
 // IsNotExistMkDir create a directory if it does not exist
 func IsNotExistCreateFile(src string) error {
 	if notExist := CheckNotExist(src); notExist == true {
@@ -168,6 +186,27 @@ func CopyFile(src, dst string) error {
 	var dstfd *os.File
 	var srcinfo os.FileInfo
 
+	lastPath := src[strings.LastIndex(src, "/")+1:]
+
+	if !strings.HasSuffix(dst, "/") {
+		dst += "/"
+	}
+	dstPath := dst
+	dst += lastPath
+	for i := 0; Exists(dst); i++ {
+		name := strings.Split(lastPath, ".")
+		nameIndex := 0
+		if len(name) > 2 {
+			nameIndex = len(name) - 2
+		}
+		name[nameIndex] = name[nameIndex] + strconv.Itoa(i+1)
+		dst = dstPath
+		for _, v := range name {
+			dst += v + "."
+		}
+		dst = strings.TrimSuffix(dst, ".")
+	}
+
 	if srcfd, err = os.Open(src); err != nil {
 		return err
 	}
@@ -202,16 +241,21 @@ func CopyDir(src string, dst string) error {
 		}
 		return nil
 	}
+	dstPath := dst
+	lastPath := src[strings.LastIndex(src, "/")+1:]
+	dst += "/" + lastPath
+	for i := 0; Exists(dst); i++ {
+		dst = dstPath + "/" + lastPath + strconv.Itoa(i+1)
+	}
 	if err = os.MkdirAll(dst, srcinfo.Mode()); err != nil {
 		return err
 	}
-
 	if fds, err = ioutil.ReadDir(src); err != nil {
 		return err
 	}
 	for _, fd := range fds {
 		srcfp := path.Join(src, fd.Name())
-		dstfp := path.Join(dst, fd.Name())
+		dstfp := dst //path.Join(dst, fd.Name())
 
 		if fd.IsDir() {
 			if err = CopyDir(srcfp, dstfp); err != nil {
@@ -225,3 +269,54 @@ func CopyDir(src string, dst string) error {
 	}
 	return nil
 }
+
+//文件写入临时目录
+func WriteToPath(data []byte, path, name string) error {
+	fullPath := path
+	if strings.HasSuffix(path, "/") {
+		fullPath += name
+	} else {
+		fullPath += "/" + name
+	}
+	IsNotExistCreateFile(fullPath)
+	file, err := os.OpenFile(fullPath,
+		os.O_WRONLY|os.O_TRUNC|os.O_CREATE,
+		0666,
+	)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	_, err = file.Write(data)
+
+	return err
+}
+
+//最终拼接
+func SpliceFiles(dir, path string, length int) error {
+
+	fullPath := path
+
+	IsNotExistCreateFile(fullPath)
+
+	file, _ := os.OpenFile(fullPath,
+		os.O_WRONLY|os.O_TRUNC|os.O_CREATE,
+		0666,
+	)
+	defer file.Close()
+	bufferedWriter := bufio.NewWriter(file)
+	for i := 0; i < length; i++ {
+		data, err := ioutil.ReadFile(path + strconv.Itoa(i))
+		if err != nil {
+			return err
+		}
+		_, err = bufferedWriter.Write(data)
+		if err != nil {
+			return err
+		}
+	}
+
+	bufferedWriter.Flush()
+
+	return nil
+}