/
ltsview.go
70 lines (61 loc) · 1.13 KB
/
ltsview.go
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package ltsview
import (
"fmt"
"io"
"sort"
"strings"
"github.com/ymotongpoo/goltsv"
)
type LTSView struct {
Reader io.Reader
Writer Writer
Keys map[string]struct{}
Ikeys map[string]struct{}
}
func (v *LTSView) Start() {
reader := goltsv.NewReader(v.Reader)
for {
record, err := reader.Read()
if err == io.EOF {
break
}
if err != nil {
continue
}
PrintSep(v.Writer)
sortedKeys := SortKeys(record)
for _, k := range sortedKeys {
if _, ignore := v.Ikeys[k]; len(v.Ikeys) > 0 && ignore {
continue
}
if _, show := v.Keys[k]; len(v.Keys) > 0 && !show {
continue
}
PrintLine(v.Writer, k, record[k])
}
}
}
func SortKeys(record map[string]string) []string {
keys := []string{}
for k := range record {
keys = append(keys, k)
}
sort.Strings(keys)
return keys
}
func PrintLine(w Writer, k, v string) {
fmt.Fprintln(w, k+":", v)
}
func PrintSep(w SeparatorWriter) {
w.WriteSeparator("---")
}
func ParseKeysByFlag(flag string) map[string]struct{} {
keys := map[string]struct{}{}
for _, k := range strings.Split(flag, ",") {
if k == "" {
continue
}
keys[k] = struct{}{}
}
return keys
}