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|
package mintage
import (
"encoding/csv"
"io"
"os"
"path/filepath"
"strconv"
)
func Parse(country string) ([3]Data, error) {
if data, ok := cache[country]; ok {
return data, nil
}
var (
data [3]Data
err error
path = filepath.Join("data", "mintages", country)
)
data[TypeCirc].Standard, err = parseS(path + "-s-circ.csv")
if err != nil {
return data, err
}
data[TypeNifc].Standard, err = parseS(path + "-s-nifc.csv")
if err != nil {
return data, err
}
data[TypeProof].Standard, err = parseS(path + "-s-proof.csv")
if err != nil {
return data, err
}
data[TypeCirc].Commemorative, err = parseC(path + "-c-circ.csv")
if err != nil {
return data, err
}
data[TypeNifc].Commemorative, err = parseC(path + "-c-nifc.csv")
if err != nil {
return data, err
}
data[TypeProof].Commemorative, err = parseC(path + "-c-proof.csv")
if err == nil {
cache[country] = data
}
return data, err
}
func parseS(path string) ([]SRow, error) {
rows := make([]SRow, 0, 69) /* TODO: Compute number of rows */
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
r := csv.NewReader(f)
r.Comment = '#'
r.FieldsPerRecord = 10
r.ReuseRecord = true
/* Skip header */
if _, err := r.Read(); err != nil {
return nil, err
}
for {
record, err := r.Read()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
data := SRow{Mintmark: record[1]}
data.Year, err = strconv.Atoi(record[0])
if err != nil {
return nil, err
}
for i, s := range record[2:] {
if s == "" {
data.Mintages[i] = Unknown
} else {
data.Mintages[i], err = strconv.Atoi(s)
if err != nil {
data.Mintages[i] = Invalid
}
}
}
rows = append(rows, data)
}
return rows, nil
}
func parseC(path string) ([]CRow, error) {
rows := make([]CRow, 0, 69) /* TODO: Compute number of rows */
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
r := csv.NewReader(f)
r.Comment = '#'
r.FieldsPerRecord = 4
r.ReuseRecord = true
/* Skip header */
if _, err := r.Read(); err != nil {
return nil, err
}
for {
record, err := r.Read()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
data := CRow{
Name: record[1],
Mintmark: record[2],
}
data.Year, err = strconv.Atoi(record[0])
if err != nil {
return nil, err
}
s := record[3]
if s == "" {
data.Mintage = Unknown
} else {
data.Mintage, err = strconv.Atoi(s)
if err != nil {
data.Mintage = Invalid
}
}
rows = append(rows, data)
}
return rows, nil
}
|
