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Convert from ISO-8859-1 to UTF-8 #10

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24 changes: 21 additions & 3 deletions libgeo.go
Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,14 @@ package libgeo

// Dependencies
import (
"bytes"
"errors"
"io/ioutil"
"os"

// for decoding ISO-8859-1
"code.google.com/p/go-charset/charset"
_ "code.google.com/p/go-charset/data"
)

// Globals (const arrays that will be initialized inside init())
Expand Down Expand Up @@ -205,6 +211,18 @@ func (gi *GeoIP) GetLocationByIP(ip string) *Location {
return gi.GetLocationByIPNum(AddrToNum(ip))
}

func getUTF8String(b []byte) string {
cr, err := charset.NewReader("ISO-8859-1", bytes.NewBuffer(b))
if err != nil {
return string(b)
}
bb, err := ioutil.ReadAll(cr)
if err != nil {
return string(b)
}
return string(bb)
}

// Lookup by IP number and return location
func (gi *GeoIP) GetLocationByIPNum(ipNum uint32) *Location {
// Perform the lookup on the database to see if the record is found
Expand Down Expand Up @@ -245,7 +263,7 @@ func (gi *GeoIP) GetLocationByIPNum(ipNum uint32) *Location {
recPointer+readLen < recordEnd; readLen++ {
}
if readLen != 0 {
location.Region = string(gi.data[recPointer : recPointer+readLen])
location.Region = getUTF8String(gi.data[recPointer : recPointer+readLen])
}
recPointer += readLen + 1

Expand All @@ -254,7 +272,7 @@ func (gi *GeoIP) GetLocationByIPNum(ipNum uint32) *Location {
recPointer+readLen < recordEnd; readLen++ {
}
if readLen != 0 {
location.City = string(gi.data[recPointer : recPointer+readLen])
location.City = getUTF8String(gi.data[recPointer : recPointer+readLen])
}
recPointer += readLen + 1

Expand All @@ -263,7 +281,7 @@ func (gi *GeoIP) GetLocationByIPNum(ipNum uint32) *Location {
recPointer+readLen < recordEnd; readLen++ {
}
if readLen != 0 {
location.PostalCode = string(gi.data[recPointer : recPointer+readLen])
location.PostalCode = getUTF8String(gi.data[recPointer : recPointer+readLen])
}
recPointer += readLen + 1

Expand Down