mirror of https://github.com/containers/podman.git
remove pkg/util/camelcase
It is not used here. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
This commit is contained in:
Paul Holzinger
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The MIT License (MIT)
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Copyright (c) 2015 Fatih Arslan
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# CamelCase [](https://godoc.org/github.com/fatih/camelcase) [](https://travis-ci.org/fatih/camelcase)
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CamelCase is a Golang (Go) package to split the words of a camelcase type
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string into a slice of words. It can be used to convert a camelcase word (lower
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or upper case) into any type of word.
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## Splitting rules:
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1. If string is not valid UTF-8, return it without splitting as
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single item array.
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2. Assign all unicode characters into one of 4 sets: lower case
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letters, upper case letters, numbers, and all other characters.
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3. Iterate through characters of string, introducing splits
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between adjacent characters that belong to different sets.
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4. Iterate through array of split strings, and if a given string
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is upper case:
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* if subsequent string is lower case:
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* move last character of upper case string to beginning of
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lower case string
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## Install
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```bash
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go get github.com/fatih/camelcase
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```
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## Usage and examples
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```go
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split := camelcase.Split("GolangPackage")
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fmt.Println(split[0], split[1]) // prints: "Golang", "Package"
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```
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Both lower camel case and upper camel case are supported. For more info please
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check: [https://en.wikipedia.org/wiki/CamelCase](https://en.wikipedia.org/wiki/CamelCase)
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Below are some example cases:
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```
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"" => []
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"lowercase" => ["lowercase"]
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"Class" => ["Class"]
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"MyClass" => ["My", "Class"]
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"MyC" => ["My", "C"]
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"HTML" => ["HTML"]
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"PDFLoader" => ["PDF", "Loader"]
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"AString" => ["A", "String"]
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"SimpleXMLParser" => ["Simple", "XML", "Parser"]
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"vimRPCPlugin" => ["vim", "RPC", "Plugin"]
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"GL11Version" => ["GL", "11", "Version"]
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"99Bottles" => ["99", "Bottles"]
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"May5" => ["May", "5"]
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"BFG9000" => ["BFG", "9000"]
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"BöseÜberraschung" => ["Böse", "Überraschung"]
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"Two spaces" => ["Two", " ", "spaces"]
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"BadUTF8\xe2\xe2\xa1" => ["BadUTF8\xe2\xe2\xa1"]
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```
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// Package camelcase is a micro package to split the words of a camelcase type
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// string into a slice of words.
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package camelcase
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import (
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"unicode"
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"unicode/utf8"
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)
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// Split splits the camelcase word and returns a list of words. It also
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// supports digits. Both lower camel case and upper camel case are supported.
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// For more info please check: https://en.wikipedia.org/wiki/CamelCase
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//
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// Examples
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//
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// "" => [""]
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// "lowercase" => ["lowercase"]
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// "Class" => ["Class"]
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// "MyClass" => ["My", "Class"]
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// "MyC" => ["My", "C"]
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// "HTML" => ["HTML"]
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// "PDFLoader" => ["PDF", "Loader"]
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// "AString" => ["A", "String"]
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// "SimpleXMLParser" => ["Simple", "XML", "Parser"]
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// "vimRPCPlugin" => ["vim", "RPC", "Plugin"]
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// "GL11Version" => ["GL", "11", "Version"]
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// "99Bottles" => ["99", "Bottles"]
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// "May5" => ["May", "5"]
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// "BFG9000" => ["BFG", "9000"]
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// "BöseÜberraschung" => ["Böse", "Überraschung"]
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// "Two spaces" => ["Two", " ", "spaces"]
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// "BadUTF8\xe2\xe2\xa1" => ["BadUTF8\xe2\xe2\xa1"]
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//
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// Splitting rules
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//
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// 1. If string is not valid UTF-8, return it without splitting as
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// single item array.
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// 2. Assign all unicode characters into one of 4 sets: lower case
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// letters, upper case letters, numbers, and all other characters.
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// 3. Iterate through characters of string, introducing splits
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// between adjacent characters that belong to different sets.
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// 4. Iterate through array of split strings, and if a given string
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// is upper case:
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// if subsequent string is lower case:
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// move last character of upper case string to beginning of
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// lower case string
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func Split(src string) (entries []string) {
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// don't split invalid utf8
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if !utf8.ValidString(src) {
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return []string{src}
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}
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entries = []string{}
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var runes [][]rune
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var lastClass int
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// split into fields based on class of unicode character
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for _, r := range src {
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var class int
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switch {
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case unicode.IsLower(r):
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class = 1
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case unicode.IsUpper(r):
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class = 2
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case unicode.IsDigit(r):
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class = 3
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default:
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class = 4
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}
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if class == lastClass {
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runes[len(runes)-1] = append(runes[len(runes)-1], r)
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} else {
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runes = append(runes, []rune{r})
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}
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lastClass = class
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}
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// handle upper case -> lower case sequences, e.g.
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// "PDFL", "oader" -> "PDF", "Loader"
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for i := 0; i < len(runes)-1; i++ {
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if unicode.IsUpper(runes[i][0]) && unicode.IsLower(runes[i+1][0]) {
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runes[i+1] = append([]rune{runes[i][len(runes[i])-1]}, runes[i+1]...)
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runes[i] = runes[i][:len(runes[i])-1]
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}
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}
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// construct []string from results
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for _, s := range runes {
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if len(s) > 0 {
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entries = append(entries, string(s))
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}
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}
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return entries
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}
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