Fixed circular dependency issue

utils/fileio/fileio.go

@@ -0,0 +1,64 @@
+package utils
+
+import (
+	"bufio"
+	"io/ioutil"
+	"os"
+
+	checkErr "../checkErr"
+)
+
+type delegateString func(string)
+
+// CheckIfExists - Checks if file or directory exists
+func CheckIfExists(path string) bool {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return false
+	}
+
+	return true
+}
+
+// InitOutputDirectory - Creates output directory
+func InitOutputDirectory(path string) {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		os.MkdirAll(path, os.ModePerm)
+	}
+}
+
+// ReadFileToString - Reads file and returns content
+func ReadFileToString(path string) string {
+	content, err := ioutil.ReadFile(path)
+	if err != nil {
+		panic(err)
+	}
+
+	return string(content)
+}
+
+// ReadFileLineByLine - Reads file line by line and calls delegate
+func ReadFileLineByLine(path string, delegate delegateString) {
+	file, err := os.Open(path)
+	checkErr.CheckErr(err)
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		delegate(scanner.Text())
+	}
+
+	if err := scanner.Err(); err != nil {
+		panic(err)
+	}
+}
+
+// AppendToFile - Appends line to file
+func AppendToFile(str string, filePath string) {
+	f, err := os.OpenFile(filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	checkErr.CheckErr(err)
+
+	defer f.Close()
+	if _, err := f.WriteString(str + "\n"); err != nil {
+		checkErr.CheckErr(err)
+	}
+}