forked from aotimme/gocsv
/
describe.go
43 lines (35 loc) · 965 Bytes
/
describe.go
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package cmd
import (
"flag"
"fmt"
)
type DescribeSubcommand struct{}
func (sub *DescribeSubcommand) Name() string {
return "describe"
}
func (sub *DescribeSubcommand) Aliases() []string {
return []string{}
}
func (sub *DescribeSubcommand) Description() string {
return "Get basic information about a CSV."
}
func (sub *DescribeSubcommand) SetFlags(fs *flag.FlagSet) {
}
func (sub *DescribeSubcommand) Run(args []string) {
inputCsvs := GetInputCsvsOrPanic(args, 1)
DescribeCsv(inputCsvs[0])
}
func DescribeCsv(inputCsv *InputCsv) {
imc := NewInMemoryCsvFromInputCsv(inputCsv)
numRows := imc.NumRows()
numColumns := imc.NumColumns()
fmt.Println("Dimensions:")
fmt.Printf(" Rows: %d\n", numRows)
fmt.Printf(" Columns: %d\n", numColumns)
fmt.Println("Columns:")
for i := 0; i < numColumns; i++ {
columnType := imc.InferType(i)
fmt.Printf(" %d: %s\n", i+1, imc.header[i])
fmt.Printf(" Type: %s\n", ColumnTypeToString(columnType))
}
}