string_util.go
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package webutility
import (
"fmt"
"strconv"
"strings"
"unicode"
)
const sanitisationPatern = "\"';&*<>=\\`:"
// SanitiseString removes characters from s found in patern and returns new modified string.
func SanitiseString(s string) string {
return ReplaceAny(s, sanitisationPatern, "")
}
// IsWrappedWith ...
func IsWrappedWith(src, begin, end string) bool {
return strings.HasPrefix(src, begin) && strings.HasSuffix(src, end)
}
// ParseInt64Arr ...
func ParseInt64Arr(s, sep string) (arr []int64) {
s = strings.TrimSpace(s)
if s == "" {
return
}
parts := strings.Split(s, sep)
arr = make([]int64, len(parts))
for i, p := range parts {
num := StringToInt64(p)
arr[i] = num
}
return arr
}
// Int64SliceToString ...
func Int64SliceToString(arr []int64) (s string) {
if len(arr) == 0 {
return ""
}
s += fmt.Sprintf("%d", arr[0])
for i := 1; i < len(arr); i++ {
s += fmt.Sprintf(",%d", arr[i])
}
return s
}
// CombineStrings ...
func CombineStrings(s1, s2, s3 string) string {
s1 = strings.TrimSpace(s1)
s2 = strings.TrimSpace(s2)
if s1 != "" && s2 != "" {
s1 += s3 + s2
} else {
s1 += s2
}
return s1
}
// ReplaceAny replaces any of the characters from patern found in s with r and returns a new resulting string.
func ReplaceAny(s, patern, r string) (n string) {
n = s
for _, c := range patern {
n = strings.Replace(n, string(c), r, -1)
}
return n
}
// StringToBool ...
func StringToBool(s string) bool {
res, _ := strconv.ParseBool(s)
return res
}
// BoolToString ...
func BoolToString(b bool) string {
return fmt.Sprintf("%b", b)
}
// StringSliceContains ...
func StringSliceContains(slice []string, s string) bool {
for i := range slice {
if slice[i] == s {
return true
}
}
return false
}
func SplitString(s, sep string) (res []string) {
parts := strings.Split(s, sep)
for _, p := range parts {
if p != "" {
res = append(res, p)
}
}
return res
}
// StringAt ...
func StringAt(s string, index int) string {
if len(s)-1 < index || index < 0 {
return ""
}
return string(s[index])
}
func StringAtRune(s string, index int) string {
str := []rune(s)
if index < len(str) {
return string(str[index])
}
return ""
}
// SplitText ...
func SplitText(s string, maxLen int) (lines []string) {
runes := []rune(s)
i, start, sep, l := 0, 0, 0, 0
for i = 0; i < len(runes); i++ {
c := runes[i]
if unicode.IsSpace(c) {
sep = i
}
if c == '\n' {
if start != sep {
lines = append(lines, string(runes[start:sep]))
}
start = i
sep = i
l = 0
} else if l >= maxLen {
if start != sep {
lines = append(lines, string(runes[start:sep]))
sep = i
start = i - 1
l = 0
}
} else {
l++
}
}
if start != i-1 {
lines = append(lines, string(runes[start:i-1]))
}
return lines
}
func CutTextWith(txt string, maxLen int, tail string) string {
if len(txt) < maxLen || len(txt) <= len(tail) {
return txt
}
return txt[:maxLen-3] + tail
}
func LimitTextWith(txt string, maxLen int, tail string) string {
if len(txt) <= maxLen {
return txt
}
return txt[:maxLen] + tail
}
// SplitStringAtWholeWords ...
func SplitStringAtWholeWords(s string, maxLen int) (res []string) {
parts := strings.Split(s, " ")
res = append(res, parts[0])
i := 0
for j := 1; j < len(parts); j++ {
p := strings.TrimSpace(parts[j])
if len(p) > maxLen {
// TODO(marko): check if maxLen is >= 3
p = p[0 : maxLen-3]
p += "..."
}
if len(res[i])+len(p)+1 <= maxLen {
res[i] += " " + p
} else {
res = append(res, p)
i++
}
}
return res
}
// StringToInt64 ...
func StringToInt64(s string) int64 {
i, _ := strconv.ParseInt(s, 10, 64)
return i
}
// StringToFloat64 ...
func StringToFloat64(s string) float64 {
f, _ := strconv.ParseFloat(s, 64)
return f
}
func StringToValidInt64(s string) (int64, bool) {
i, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return i, false
}
return i, true
}