41 lines
849 B
Go
41 lines
849 B
Go
package common
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import (
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"bytes"
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"text/template"
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)
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func isalphanumeric(b byte) bool {
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if '0' <= b && b <= '9' {
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return true
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}
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if 'a' <= b && b <= 'z' {
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return true
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}
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if 'A' <= b && b <= 'Z' {
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return true
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}
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return false
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}
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// Clean up AMI name by replacing invalid characters with "-"
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// For allowed characters see docs for Name parameter
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// at http://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateImage.html
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func templateCleanAMIName(s string) string {
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allowed := []byte{'(', ')', '[', ']', ' ', '.', '/', '-', '\'', '@', '_'}
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b := []byte(s)
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newb := make([]byte, len(b))
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for i, c := range b {
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if isalphanumeric(c) || bytes.IndexByte(allowed, c) != -1 {
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newb[i] = c
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} else {
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newb[i] = '-'
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}
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}
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return string(newb[:])
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}
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var TemplateFuncs = template.FuncMap{
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"clean_resource_name": templateCleanAMIName,
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}
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