/
ncol.go
101 lines (82 loc) · 2.65 KB
/
ncol.go
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// Copyright © 2016-2023 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 (
"fmt"
"runtime"
"github.com/shenwei356/xopen"
"github.com/spf13/cobra"
)
// ncolCmd represents the ncol command
var ncolCmd = &cobra.Command{
GroupID: "info",
Use: "ncol",
Aliases: []string{"ncols"},
Short: "print number of columns",
Long: `print number of columns
`,
Run: func(cmd *cobra.Command, args []string) {
config := getConfigs(cmd)
files := getFileListFromArgsAndFile(cmd, args, true, "infile-list", true)
runtime.GOMAXPROCS(config.NumCPUs)
printFileName := getFlagBool(cmd, "file-name")
outfh, err := xopen.Wopen(config.OutFile)
checkError(err)
defer outfh.Close()
for _, file := range files {
var numCols int
csvReader, err := newCSVReaderByConfig(config, file)
if err != nil {
if err == xopen.ErrNoContent {
if printFileName {
outfh.WriteString(fmt.Sprintf("%d\t%s\n", numCols, file))
} else {
outfh.WriteString(fmt.Sprintf("%d\n", numCols))
}
outfh.Flush()
continue
} else {
checkError(err)
}
}
csvReader.Read(ReadOption{
FieldStr: "1-",
})
for record := range csvReader.Ch {
if record.Err != nil {
checkError(record.Err)
}
numCols = len(record.All)
break
}
if printFileName {
outfh.WriteString(fmt.Sprintf("%d\t%s\n", numCols, file))
} else {
outfh.WriteString(fmt.Sprintf("%d\n", numCols))
}
outfh.Flush()
readerReport(&config, csvReader, file)
}
},
}
func init() {
ncolCmd.Flags().BoolP("file-name", "n", false, "print file names")
RootCmd.AddCommand(ncolCmd)
}