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coverage.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>rotationalcipher: Go Coverage Report</title>
<style>
body {
background: black;
color: rgb(80, 80, 80);
}
body, pre, #legend span {
font-family: Menlo, monospace;
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.cov10 { color: rgb(20, 236, 155) }
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</head>
<body>
<div id="topbar">
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<select id="files">
<option value="file0">rotationalcipher/rotational_cipher.go (100.0%)</option>
</select>
</div>
<div id="legend">
<span>not tracked</span>
<span class="cov0">no coverage</span>
<span class="cov1">low coverage</span>
<span class="cov2">*</span>
<span class="cov3">*</span>
<span class="cov4">*</span>
<span class="cov5">*</span>
<span class="cov6">*</span>
<span class="cov7">*</span>
<span class="cov8">*</span>
<span class="cov9">*</span>
<span class="cov10">high coverage</span>
</div>
</div>
<div id="content">
<pre class="file" id="file0" style="display: none">// Package rotationalcipher is used to encrypt data.
package rotationalcipher
import (
"strings"
"unicode"
)
// RotationalCipher returns a cipher text after applying a rotational cipher to a plain text input.
func RotationalCipher(plain string, shiftKey int) string <span class="cov5" title="12">{
if len(plain) == 0 </span><span class="cov2" title="2">{
return ""
}</span>
<span class="cov5" title="10">var cipher strings.Builder
for _, char := range plain </span><span class="cov10" title="122">{
if !unicode.IsLower(char) && !unicode.IsUpper(char) </span><span class="cov6" title="23">{
cipher.WriteString(string(char))
}</span> else<span class="cov9" title="99"> {
cipher.WriteString(string(shiftChar(char, shiftKey)))
}</span>
}
<span class="cov5" title="10">return cipher.String()</span>
}
func shiftChar(char rune, shift int) rune <span class="cov9" title="99">{
var offset int
if unicode.IsLower(char) </span><span class="cov8" title="63">{
offset = 97
}</span>
<span class="cov9" title="99">if unicode.IsUpper(char) </span><span class="cov7" title="36">{
offset = 65
}</span>
<span class="cov9" title="99">return rune(((int(char) - offset + shift) % 26) + offset)</span>
}
/*
=== string concat vs bytes.Buffer ===
name old time/op new time/op delta
RotationalCipher-4 3.61µs ± 0% 4.01µs ± 0% ~ (p=1.000 n=1+1)
name old alloc/op new alloc/op delta
RotationalCipher-4 680B ± 0% 680B ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
RotationalCipher-4 14.0 ± 0% 14.0 ± 0% ~ (all equal)
*/
/*
=== bytes.Buffer vs strings.Builder ===
name old time/op new time/op delta
RotationalCipher-4 4.01µs ± 0% 3.61µs ± 0% ~ (p=1.000 n=1+1)
name old alloc/op new alloc/op delta
RotationalCipher-4 680B ± 0% 280B ± 0% ~ (p=1.000 n=1+1)
name old allocs/op new allocs/op delta
RotationalCipher-4 14.0 ± 0% 16.0 ± 0% ~ (p=1.000 n=1+1)
*/
</pre>
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