init

util/string.go

@@ -0,0 +1,104 @@
+package util
+
+import (
+	"strconv"
+	"strings"
+	"unicode"
+)
+
+//判断是否是数字字符串
+func IsDigit(str string) bool {
+	for _, x := range []rune(str) {
+		if !unicode.IsDigit(x) {
+			return false
+		}
+	}
+	return true
+}
+
+func Atoi(i string) int {
+	if i == "" {
+		return 0
+	}
+	j, err := strconv.Atoi(i)
+	if err != nil {
+		return 0
+	} else {
+		return j
+	}
+}
+
+func StringToInt(s interface{}) int {
+	switch i := s.(type) {
+	case string:
+		return Atoi(i)
+	case float32:
+		return int(i)
+	case float64:
+		return int(i)
+	case int:
+		return i
+	case uint:
+		return int(i)
+	}
+	return 0
+}
+
+/**
+ * 驼峰转蛇形 snake string
+ * @description XxYy to xx_yy , XxYY to xx_y_y
+ * @date 2020/7/30
+ * @param s 需要转换的字符串
+ * @return string
+ **/
+func SnakeString(s string) string {
+	data := make([]byte, 0, len(s)*2)
+	j := false
+	num := len(s)
+	for i := 0; i < num; i++ {
+		d := s[i]
+		// or通过ASCII码进行大小写的转化
+		// 65-90（A-Z），97-122（a-z）
+		//判断如果字母为大写的A-Z就在前面拼接一个_
+		if i > 0 && d >= 'A' && d <= 'Z' && j {
+			data = append(data, '_')
+		}
+		if d != '_' {
+			j = true
+		}
+		data = append(data, d)
+	}
+	//ToLower把大写字母统一转小写
+	return strings.ToLower(string(data[:]))
+}
+
+/**
+ * 蛇形转驼峰
+ * @description xx_yy to XxYx  xx_y_y to XxYY
+ * @date 2020/7/30
+ * @param s要转换的字符串
+ * @return string
+ **/
+func CamelString(s string) string {
+	data := make([]byte, 0, len(s))
+	j := false
+	k := false
+	num := len(s) - 1
+	for i := 0; i <= num; i++ {
+		d := s[i]
+		if k == false && d >= 'A' && d <= 'Z' {
+			k = true
+		}
+		if d >= 'a' && d <= 'z' && (j || k == false) {
+			d = d - 32
+			j = false
+			k = true
+		}
+		if k && d == '_' && num > i && s[i+1] >= 'a' && s[i+1] <= 'z' {
+			j = true
+			continue
+		}
+		data = append(data, d)
+	}
+	return string(data[:])
+}