public static int GTIFKeyInfo(GTIF gtif, geokey_t key, out tagtype_t type)
{
type=tagtype_t.TYPE_UNKNOWN;
if(!gtif.gt_keys.ContainsKey(key)) return 0;
GeoKey keyptr=gtif.gt_keys[key];
type=keyptr.gk_type;
return keyptr.gk_count;
}
public static int GTIFKeyInfo(GTIF gtif, geokey_t key, out tagtype_t type)
{
type = tagtype_t.TYPE_UNKNOWN;
if (!gtif.gt_keys.ContainsKey(key))
{
return(0);
}
GeoKey keyptr = gtif.gt_keys[key];
type = keyptr.gk_type;
return(keyptr.gk_count);
}
public static string GTIFTypeName(tagtype_t type)
{
return FindName(_formatInfo, (int)type);
}
static int ReadKey(GTIF gt, GTIFReadMethod scan, object aux)
{
string message = scan(aux);
if (message == null)
{
return(-1);
}
if (message.Length >= 12)
{
if (message.ToLower().Substring(0, 12) == FMT_KEYEND.ToLower().Substring(0, 12))
{
return(0);
}
}
try
{
int firstp = message.IndexOfAny(new char[] { '(', ' ', '\t' });
if (firstp < 0)
{
return(StringError(message));
}
string name = message.Substring(0, firstp).Trim();
string message1 = message.Substring(firstp);
int colon = message1.IndexOf(':');
if (colon < 0)
{
return(StringError(message1));
}
string head = message1.Substring(0, colon);
head = head.Trim(' ', '\t', '(', ')');
string[] spl = head.Split(',');
if (spl.Length != 2)
{
return(StringError(head));
}
string type = spl[0];
int count = int.Parse(spl[1]);
// skip white space
string data = message1.Substring(colon + 1).Trim();
if (data.Length == 0)
{
return(StringError(message));
}
if (GTIFKeyCode(name) < 0)
{
return(StringError(name));
}
geokey_t key = (geokey_t)GTIFKeyCode(name);
if (GTIFTypeCode(type) < 0)
{
return(StringError(type));
}
tagtype_t ktype = (tagtype_t)GTIFTypeCode(type);
switch (ktype)
{
case tagtype_t.TYPE_ASCII:
{
string cdata = "";
int firstDoubleQuote = data.IndexOf('"');
if (firstDoubleQuote < 0)
{
return(StringError(data));
}
data = data.Substring(firstDoubleQuote + 1);
bool wasesc = false;
char c = '\0';
for (int i = 0; i < data.Length; i++)
{
c = data[i];
if (wasesc)
{
if (c == '\\')
{
cdata += '\\';
}
else if (c == '"')
{
cdata += '"';
}
else if (c == 'n')
{
cdata += '\n';
}
else if (c == 't')
{
cdata += '\t';
}
else if (c == 'b')
{
cdata += '\b';
}
else if (c == 'r')
{
cdata += '\r';
}
else if (c == '0')
{
cdata += '\0';
}
wasesc = false;
continue;
}
if (c == '\\')
{
wasesc = true;
continue;
}
if (c == '\0')
{
break;
}
if (c == '"')
{
break;
}
cdata += c;
if (cdata.Length == count)
{
c = data[i + 1];
break;
}
}
if (cdata.Length < count)
{
return(StringError(message));
}
if (c != '"')
{
return(StringError(message));
}
GTIFKeySet(gt, key, cdata);
}
break;
case tagtype_t.TYPE_DOUBLE:
{
double[] dptr = new double[count];
int i = 0;
for (; count > 0; count -= 3)
{
spl = data.Split(new char[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (spl.Length != Math.Min(3, count))
{
return(StringError(data));
}
foreach (string part in spl)
{
message = part;
dptr[i++] = GTIFAtof(part);
}
if (count > 3)
{
message = data = scan(aux);
}
}
GTIFKeySet(gt, key, dptr);
}
break;
case tagtype_t.TYPE_SHORT:
if (count == 1)
{
int icode = GTIFValueCode(key, data);
if (icode < 0)
{
return(StringError(data));
}
ushort code = (ushort)icode;
GTIFKeySet(gt, key, code);
}
else // multi-valued short - no such thing yet
{
ushort[] sptr = new ushort[count];
int i = 0;
for (; count > 0; count -= 3)
{
spl = data.Split(new char[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (spl.Length != Math.Min(3, count))
{
return(StringError(data));
}
foreach (string part in spl)
{
message = part;
sptr[i++] = ushort.Parse(part);
}
if (count > 3)
{
message = data = scan(aux);
}
}
GTIFKeySet(gt, key, sptr);
}
break;
default: return(-1);
}
}
catch
{
return(StringError(message));
}
return(1);
}
public static string GTIFTypeName(tagtype_t type)
{
return(FindName(_formatInfo, (int)type));
}
