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cobra.go
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cobra.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 appcmd
import (
"fmt"
"io"
"strings"
"text/template"
"unicode"
)
import (
"github.com/spf13/cobra"
)
// The functions in this file are mostly copied from github.com/spf13/cobra.
// https://github.com/spf13/cobra/blob/master/LICENSE.txt
var templateFuncs = template.FuncMap{
"trim": strings.TrimSpace,
"trimRightSpace": trimRightSpace,
"trimTrailingWhitespaces": trimRightSpace,
"rpad": rpad,
"gt": cobra.Gt,
"eq": cobra.Eq,
}
func trimRightSpace(s string) string {
return strings.TrimRightFunc(s, unicode.IsSpace)
}
// rpad adds padding to the right of a string.
func rpad(s string, padding int) string {
template := fmt.Sprintf("%%-%ds", padding)
return fmt.Sprintf(template, s)
}
// tmpl executes the given template text on data, writing the result to w.
func tmpl(w io.Writer, text string, data interface{}) error {
t := template.New("top")
t.Funcs(templateFuncs)
t, err := t.Parse(text)
if err != nil {
return err
}
return t.Execute(w, data)
}