Подготовить HY2XS к production-сборке

apps/util/file.go

@@ -0,0 +1,88 @@
+package util
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func Exists(path string) bool {
+	_, err := os.Stat(path)
+	if err != nil {
+		if os.IsExist(err) {
+			return true
+		}
+		return false
+	}
+	return true
+}
+
+func RemoveFile(fileName string) error {
+	if Exists(fileName) {
+		if err := os.Remove(fileName); err != nil {
+			return errors.New("failed to delete file")
+		}
+	}
+	return nil
+}
+
+// ReadLinesFromBottom Read the file contents sequentially from bottom to top and return the specified number of lines
+func ReadLinesFromBottom(filePath string, numLines int) ([]string, int, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer file.Close()
+
+	var lines []string
+	scanner := bufio.NewScanner(file)
+
+	// Read the file contents line by line and reverse the order of the lines
+	total := 0
+	for scanner.Scan() {
+		lines = append(lines, scanner.Text())
+		total++
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, 0, err
+	}
+
+	// Reverse row order
+	for i, j := 0, len(lines)-1; i < j; i, j = i+1, j-1 {
+		lines[i], lines[j] = lines[j], lines[i]
+	}
+
+	// Returns the specified number of rows
+	if len(lines) < numLines {
+		numLines = len(lines)
+	}
+	return lines[:numLines], total, nil
+}
+
+func FindFile(dir, filename string) (string, error) {
+	var result string
+	err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && info.Name() == filename {
+			absPath, err := filepath.Abs(path)
+			if err != nil {
+				return err
+			}
+			result = absPath
+			return errors.New("file found")
+		}
+		return nil
+	})
+	if err != nil && err.Error() != "file found" {
+		return "", err
+	}
+	if result == "" {
+		return "", fmt.Errorf("file %s not found in directory %s", filename, dir)
+	}
+	return result, nil
+}