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85 lines
2.2 KiB
Go
85 lines
2.2 KiB
Go
/*
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* MinIO Client (C) 2017 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"github.com/minio/mc/pkg/console"
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)
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// Field configuration: color theme and max content length
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type Field struct {
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colorTheme string
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maxLen int
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}
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// PrettyTable - an easy struct to format a set of line
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type PrettyTable struct {
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cols []Field
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separator string
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}
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// newPrettyTable - creates a new pretty table
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func newPrettyTable(separator string, cols ...Field) PrettyTable {
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return PrettyTable{
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cols: cols,
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separator: separator,
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}
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}
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// buildRow - creates a string which represents a line table given
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// some fields contents.
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func (t PrettyTable) buildRow(contents ...string) (line string) {
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dots := "..."
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// totalColumns is the minimum of the number of fields config
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// and the number of contents elements.
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totalColumns := len(contents)
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if len(t.cols) < totalColumns {
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totalColumns = len(t.cols)
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}
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// Format fields and construct message
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for i := 0; i < totalColumns; i++ {
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// Default field format without pretty effect
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fieldContent := ""
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fieldFormat := "%s"
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if t.cols[i].maxLen >= 0 {
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// Override field format
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fieldFormat = fmt.Sprintf("%%-%d.%ds", t.cols[i].maxLen, t.cols[i].maxLen)
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// Cut field string and add '...' if length is greater than maxLen
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if len(contents[i]) > t.cols[i].maxLen {
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fieldContent = contents[i][:t.cols[i].maxLen-len(dots)] + dots
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} else {
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fieldContent = contents[i]
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}
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} else {
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fieldContent = contents[i]
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}
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// Add separator if this is not the last column
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if i < totalColumns-1 {
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fieldFormat += t.separator
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}
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// Add the field to the resulted message
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line += console.Colorize(t.cols[i].colorTheme, fmt.Sprintf(fieldFormat, fieldContent))
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}
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return
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}
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