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tab2csv.go
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tab2csv.go
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// Copyright © 2016-2021 Wei Shen <shenwei356@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package cmd
import (
"encoding/csv"
"fmt"
"runtime"
"github.com/shenwei356/xopen"
"github.com/spf13/cobra"
)
// tab2csvCmd represents the tab2csv command
var tab2csvCmd = &cobra.Command{
Use: "tab2csv",
Short: "convert tabular format to CSV",
Long: `convert tabular format to CSV
`,
Run: func(cmd *cobra.Command, args []string) {
config := getConfigs(cmd)
files := getFileListFromArgsAndFile(cmd, args, true, "infile-list", true)
runtime.GOMAXPROCS(config.NumCPUs)
outfh, err := xopen.Wopen(config.OutFile)
checkError(err)
defer outfh.Close()
writer := csv.NewWriter(outfh)
writer.Comma = ','
for _, file := range files {
csvReader, err := newCSVReaderByConfig(config, file)
if err != nil {
if err == xopen.ErrNoContent {
log.Warningf("csvtk tab2csv: skipping empty input file: %s", file)
continue
}
checkError(err)
}
csvReader.Reader.Comma = '\t'
csvReader.Run()
printMetaLine := true
for chunk := range csvReader.Ch {
checkError(chunk.Err)
if printMetaLine && len(csvReader.MetaLine) > 0 {
outfh.WriteString(fmt.Sprintf("sep=%s\n", string(writer.Comma)))
printMetaLine = false
}
for _, record := range chunk.Data {
checkError(writer.Write(record))
}
}
readerReport(&config, csvReader, file)
}
writer.Flush()
checkError(writer.Error())
},
}
func init() {
RootCmd.AddCommand(tab2csvCmd)
}