func bmnHandler(req *GEOConvertRequest, bmnstrval, oformat string) (interface{}, error) {
var bmnval *bmn.BMNCoord
var err error
if bmnval, err = bmn.ABMNToStruct(bmnstrval); err != nil {
return nil, err
}
var latlong *cartconvert.PolarCoord
if latlong, err = bmn.BMNToWGS84LatLong(bmnval); err != nil {
return nil, err
}
return serialize(latlong, oformat)
}
func main() {
var ofcmdlinespec, ifcmdlinespec string
var of displayformat
var ifm inputformat
var lines uint
var instring, outstring, ofparamvalues, ifparamvalues string
var pc *cartconvert.PolarCoord
for key, _ := range ofOptions {
ofparamvalues += fmt.Sprintf(" %s ", key)
}
for key, _ := range ifOptions {
ifparamvalues += fmt.Sprintf(" %s ", key)
}
flag.StringVar(&ofcmdlinespec, "of", "deg", "specify output format. Possible values are: "+ofparamvalues)
flag.StringVar(&ifcmdlinespec, "if", "osgb36", "specify input format. Possible values are: "+ifparamvalues)
flag.Parse()
of = ofOptions[strings.ToLower(ofcmdlinespec)]
ifm = ifOptions[strings.ToLower(ifcmdlinespec)]
reader := bufio.NewReaderSize(os.Stdin, 100)
longline := false
for data, prefix, err := reader.ReadLine(); err != io.EOF; data, prefix, err = reader.ReadLine() {
if err != nil {
fmt.Fprintf(os.Stderr, "conv %d: %s\n", lines, err)
continue
}
if prefix {
longline = true
continue
}
if longline {
longline = false
continue
}
lines++
instring = strings.TrimSpace(string(data))
if len(instring) == 0 {
continue
}
switch ifm {
case ifbmn:
bmncoord, err := bmn.ABMNToStruct(instring)
if err != nil {
fmt.Fprintf(os.Stderr, "BMN: error on line %d: %s\n", lines, err)
continue
}
pc, err = bmn.BMNToWGS84LatLong(bmncoord)
if err != nil {
fmt.Fprintf(os.Stderr, "BMN: error on line %d: %s (BMN does not return a lat/long bearing)\n", lines, err)
continue
}
case ifosgb36:
osgb36coord, err := osgb36.AOSGB36ToStruct(instring, osgb36.OSGB36Auto)
if err != nil {
fmt.Fprintf(os.Stderr, "OSGB36: error on line %d: %s\n", lines, err)
continue
}
pc = osgb36.OSGB36ToWGS84LatLong(osgb36coord)
}
switch of {
case ofdeg:
lat, long := cartconvert.LatLongToString(pc, cartconvert.LLFdeg)
outstring = lat + ", " + long
case ofdms:
outstring = pc.String()
case ofutm:
outstring = cartconvert.LatLongToUTM(pc).String()
case ofgeohash:
outstring = cartconvert.LatLongToGeoHash(pc)
default:
fmt.Fprintln(os.Stderr, "Unrecognized output specifier")
flag.Usage()
fmt.Fprintf(os.Stderr, "possible values are: [%s]\n", ofparamvalues)
fmt.Fprintln(os.Stderr, "]")
os.Exit(2)
}
fmt.Fprintf(os.Stdout, "%s\n", outstring)
}
}