-
Notifications
You must be signed in to change notification settings - Fork 0
/
csv.go
81 lines (65 loc) · 1.18 KB
/
csv.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
package godf
import (
"encoding/csv"
"fmt"
"os"
"strconv"
)
func ReadCSV(filename string) *dataframe {
df := dataframe{}
file, err := os.Open(filename)
if err != nil {
panic(err)
}
defer file.Close()
reader := csv.NewReader(file)
line := 0
for {
data, err := reader.Read()
if err != nil {
break
}
if line == 0 {
df.headers = data
} else {
df.data = append(df.data, []interface{}{})
for _, s := range data {
castedData := castDataType(s)
df.data[line-1] = append(df.data[line-1], castedData)
}
}
line++
}
df = *df.Transpose()
return &df
}
func castDataType(s string) interface{} {
if i, err := strconv.Atoi(s); err == nil {
return i
}
if f, err := strconv.ParseFloat(s, 64); err == nil {
return f
}
return s
}
func (d *dataframe) WriteCSV(path string) {
file, err := os.Create(path)
if err != nil {
panic(err)
}
defer file.Close()
writer := csv.NewWriter(file)
defer writer.Flush()
df := d.Transpose()
err = writer.Write(df.headers)
if err != nil {
panic(err)
}
for _, row := range df.data {
err := writer.Write(stringify(row))
if err != nil {
panic(err)
}
}
fmt.Println("Generated CSV file: ", path)
}