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CNCF/devstatscode

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map.go 2.04 KB
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package devstatscode
import (
"sort"
"strings"
)
// SkipEmpty - skip one element arrays contining only empty string
// This is what strings.Split() returns for empty input
// We expect empty array or empty map returned in such cases
func SkipEmpty(arr []string) []string {
if len(arr) != 1 || len(arr) == 1 && arr[0] != "" {
return arr
}
return []string{}
}
// StringsMapToArray this is a function that calls given function for all array items and returns array of items processed by this func
// Example call: lib.StringsMapToArray(func(x string) string { return strings.TrimSpace(x) }, []string{" a", " b ", "c "})
func StringsMapToArray(f func(string) string, strArr []string) []string {
strArr = SkipEmpty(strArr)
outArr := make([]string, len(strArr))
for index, str := range strArr {
outArr[index] = f(str)
}
return outArr
}
// StringsMapToSet this is a function that calls given function for all array items and returns set of items processed by this func
// Example call: lib.StringsMapToSet(func(x string) string { return strings.TrimSpace(x) }, []string{" a", " b ", "c "})
func StringsMapToSet(f func(string) string, strArr []string) map[string]struct{} {
strArr = SkipEmpty(strArr)
outSet := make(map[string]struct{})
for _, str := range strArr {
outSet[f(str)] = struct{}{}
}
return outSet
}
// StringsSetKeys - returns all keys from string map
func StringsSetKeys(set map[string]struct{}) []string {
outArr := make([]string, len(set))
index := 0
for key := range set {
outArr[index] = key
index++
}
sort.Strings(outArr)
return outArr
}
// MapFromString - returns maps from string formatted as map[k1:v1 k2:v2 k3:v3 ...]
func MapFromString(str string) map[string]string {
if len(str) < 6 {
return nil
}
l := len(str)
if str[:4] != "map[" || str[l-1:l] != "]" {
return nil
}
str = str[4 : l-1]
ary := strings.Split(str, " ")
var res map[string]string
for _, data := range ary {
d := strings.Split(data, ":")
if len(d) == 2 {
if res == nil {
res = make(map[string]string)
}
res[d[0]] = d[1]
}
}
return res
}
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https://gitee.com/cncf/devstatscode.git
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cncf
devstatscode
devstatscode
master

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