asteris-llc/converge

// Copyright © 2016 Asteris, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package unit

import (
    "math/rand"
    "strings"
)

// randomizeCase will randomize the character casing in a string
func randomizeCase(s string) string {
    newS := s
    count := rand.Int() % len(s)
    for i := 0; i < count; i++ {
        idx := rand.Int() % len(s)
        up := strings.ToUpper(string(s[idx]))
        newS = replaceAt(newS, up, idx)
    }
    return newS
}

// replaces the character at `at` in `replaceIn` with the string `replaceWith`
func replaceAt(replaceIn, replaceWith string, at int) string {
    if at >= len(replaceIn) {
        return replaceIn
    }
    return replaceIn[0:at] + replaceWith + replaceIn[at+1:]
}

func includesString(haystack []string, needle string) bool {
    for _, s := range haystack {
        if needle == s {
            return true
        }
    }
    return false
}