mirror of
https://github.com/aclindsa/ofxgo.git
synced 2024-10-30 05:20:05 -04:00
217 lines
5.0 KiB
Go
217 lines
5.0 KiB
Go
package ofxgo
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import (
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"crypto/rand"
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"errors"
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"fmt"
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"github.com/golang/go/src/encoding/xml"
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"math/big"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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type Int int64
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type Amount big.Rat
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func (a *Amount) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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var value string
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var b big.Rat
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err := d.DecodeElement(&value, &start)
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if err != nil {
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return err
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}
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// The OFX spec allows the start of the fractional amount to be delineated
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// by a comma, so fix that up before attempting to parse it into big.Rat
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value = strings.Replace(value, ",", ".", 1)
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if _, ok := b.SetString(value); !ok {
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return errors.New("Failed to parse OFX amount into big.Rat")
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}
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*a = Amount(b)
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return nil
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}
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func (a Amount) String() string {
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var b big.Rat = big.Rat(a)
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return strings.TrimRight(strings.TrimRight(b.FloatString(100), "0"), ".")
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}
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func (a *Amount) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
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return e.EncodeElement(a.String(), start)
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}
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type Date time.Time
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var ofxDateFormats = []string{
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"20060102150405.000",
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"20060102150405",
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"200601021504",
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"2006010215",
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"20060102",
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}
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var ofxDateZoneRegex = regexp.MustCompile(`^([+-]?[0-9]+)(\.([0-9]{2}))?(:([A-Z]+))?$`)
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func (od *Date) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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var value, zone, zoneFormat string
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err := d.DecodeElement(&value, &start)
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if err != nil {
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return err
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}
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// Split the time zone off, if any
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split := strings.SplitN(value, "[", 2)
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if len(split) == 2 {
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value = split[0]
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zoneFormat = " -0700"
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zone = strings.TrimRight(split[1], "]")
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matches := ofxDateZoneRegex.FindStringSubmatch(zone)
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if matches == nil {
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return errors.New("Invalid OFX Date timezone format: " + zone)
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}
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var err error
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var zonehours, zoneminutes int
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zonehours, err = strconv.Atoi(matches[1])
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if err != nil {
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return err
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}
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if len(matches[3]) > 0 {
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zoneminutes, err = strconv.Atoi(matches[3])
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if err != nil {
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return err
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}
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zoneminutes = zoneminutes * 60 / 100
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}
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zone = fmt.Sprintf(" %+03d%02d", zonehours, zoneminutes)
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// Get the time zone name if it's there, default to GMT if the offset
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// is 0 and a name isn't supplied
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if len(matches[5]) > 0 {
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zone = zone + " " + matches[5]
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zoneFormat = zoneFormat + " MST"
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} else if zonehours == 0 && zoneminutes == 0 {
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zone = zone + " GMT"
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zoneFormat = zoneFormat + " MST"
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}
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} else {
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// Default to GMT if no time zone was specified
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zone = " +0000 GMT"
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zoneFormat = " -0700 MST"
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}
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// Try all the date formats, from longest to shortest
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for _, format := range ofxDateFormats {
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t, err := time.Parse(format+zoneFormat, value+zone)
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if err == nil {
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tmpod := Date(t)
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*od = tmpod
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return nil
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}
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}
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return errors.New("OFX: Couldn't parse date:" + value)
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}
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func (od Date) String() string {
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t := time.Time(od)
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format := t.Format(ofxDateFormats[0])
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zonename, zoneoffset := t.Zone()
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if zoneoffset < 0 {
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format += "[" + fmt.Sprintf("%+d", zoneoffset/3600)
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} else {
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format += "[" + fmt.Sprintf("%d", zoneoffset/3600)
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}
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fractionaloffset := (zoneoffset % 3600) / 36
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if fractionaloffset > 0 {
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format += "." + fmt.Sprintf("%02d", fractionaloffset)
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} else if fractionaloffset < 0 {
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format += "." + fmt.Sprintf("%02d", -fractionaloffset)
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}
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if len(zonename) > 0 {
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return format + ":" + zonename + "]"
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} else {
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return format + "]"
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}
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}
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func (od *Date) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
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return e.EncodeElement(od.String(), start)
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}
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type String string
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func (os *String) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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var value string
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err := d.DecodeElement(&value, &start)
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if err != nil {
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return err
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}
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*os = String(strings.TrimSpace(value))
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return nil
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}
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func (os *String) String() string {
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return string(*os)
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}
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type Boolean bool
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func (ob *Boolean) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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var value string
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err := d.DecodeElement(&value, &start)
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if err != nil {
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return err
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}
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tmpob := strings.TrimSpace(value)
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switch tmpob {
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case "Y":
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*ob = Boolean(true)
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case "N":
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*ob = Boolean(false)
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default:
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return errors.New("Invalid OFX Boolean")
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}
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return nil
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}
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func (ob *Boolean) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
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if *ob {
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return e.EncodeElement("Y", start)
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}
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return e.EncodeElement("N", start)
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}
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func (ob *Boolean) String() string {
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return fmt.Sprintf("%v", *ob)
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}
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type UID string
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func (ou UID) Valid() (bool, error) {
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if len(ou) != 36 {
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return false, errors.New("UID not 36 characters long")
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}
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if ou[8] != '-' || ou[13] != '-' || ou[18] != '-' || ou[23] != '-' {
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return false, errors.New("UID missing hyphens at the appropriate places")
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}
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return true, nil
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}
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func RandomUID() (*UID, error) {
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uidbytes := make([]byte, 16)
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n, err := rand.Read(uidbytes[:])
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if err != nil {
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return nil, err
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}
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if n != 16 {
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return nil, errors.New("RandomUID failed to read 16 random bytes")
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}
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uid := UID(fmt.Sprintf("%08x-%04x-%04x-%04x-%012x", uidbytes[:4], uidbytes[4:6], uidbytes[6:8], uidbytes[8:10], uidbytes[10:]))
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return &uid, nil
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}
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