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mc/cmd/pretty-record.go

81 lines
2.1 KiB
Go

/*
* MinIO Client (C) 2019 MinIO, Inc.
*
* 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 cmd
import (
"fmt"
"github.com/minio/mc/pkg/console"
)
// Row specifies row description and theme
type Row struct {
desc string
descTheme string
}
// PrettyRecord - an easy struct to format a set of key-value
// pairs into a record
type PrettyRecord struct {
rows []Row
indent int
maxLen int
}
// newPrettyRecord - creates a new pretty record
func newPrettyRecord(indent int, rows ...Row) PrettyRecord {
maxDescLen := 0
for _, r := range rows {
if len(r.desc) > maxDescLen {
maxDescLen = len(r.desc)
}
}
return PrettyRecord{
rows: rows,
indent: indent,
maxLen: maxDescLen,
}
}
// buildRecord - creates a string which represents a record table given
// some fields contents.
func (t PrettyRecord) buildRecord(contents ...string) (line string) {
// totalRows is the minimum of the number of fields config
// and the number of contents elements.
totalRows := len(contents)
if len(t.rows) < totalRows {
totalRows = len(t.rows)
}
var format, separator string
// Format fields and construct message
for i := 0; i < totalRows; i++ {
// default heading
indent := 0
format = "%s\n"
// optionally indented rows with key value pairs
if i > 0 {
indent = t.indent
format = fmt.Sprintf("%%%ds%%-%ds : %%s\n", indent, t.maxLen)
line += console.Colorize(t.rows[i].descTheme, fmt.Sprintf(format, separator, t.rows[i].desc, contents[i]))
} else {
line += console.Colorize(t.rows[i].descTheme, fmt.Sprintf(format, contents[i]))
}
}
return
}