/// <summary>Outputs a <CODE>double</CODE> into a format suitable for the PDF.</summary>
/// <param name="d">a double</param>
/// <param name="buf">a ByteBufferOutputStream</param>
/// <returns>
/// the <CODE>String</CODE> representation of the <CODE>double</CODE> if
/// <CODE>buf</CODE> is <CODE>null</CODE>. If <CODE>buf</CODE> is <B>not</B> <CODE>null</CODE>,
/// then the double is appended directly to the buffer and this methods returns <CODE>null</CODE>.
/// </returns>
public static String FormatDouble(double d, iText.Kernel.Pdf.ByteBufferOutputStream
buf)
{
if (HIGH_PRECISION)
{
String sform = DecimalFormatUtil.FormatNumber(d, "0.######");
if (buf == null)
{
return(sform);
}
else
{
buf.Append(sform);
return(null);
}
}
bool negative = false;
if (Math.Abs(d) < 0.000015)
{
if (buf != null)
{
buf.Append(ZERO);
return(null);
}
else
{
return("0");
}
}
if (d < 0)
{
negative = true;
d = -d;
}
if (d < 1.0)
{
d += 0.000005;
if (d >= 1)
{
if (negative)
{
if (buf != null)
{
buf.Append((byte)'-');
buf.Append((byte)'1');
return(null);
}
else
{
return("-1");
}
}
else
{
if (buf != null)
{
buf.Append((byte)'1');
return(null);
}
else
{
return("1");
}
}
}
if (buf != null)
{
int v = (int)(d * 100000);
if (negative)
{
buf.Append((byte)'-');
}
buf.Append((byte)'0');
buf.Append((byte)'.');
buf.Append((byte)(v / 10000 + ZERO));
if (v % 10000 != 0)
{
buf.Append((byte)((v / 1000) % 10 + ZERO));
if (v % 1000 != 0)
{
buf.Append((byte)((v / 100) % 10 + ZERO));
if (v % 100 != 0)
{
buf.Append((byte)((v / 10) % 10 + ZERO));
if (v % 10 != 0)
{
buf.Append((byte)((v) % 10 + ZERO));
}
}
}
}
return(null);
}
else
{
int x = 100000;
int v = (int)(d * x);
StringBuilder res = new StringBuilder();
if (negative)
{
res.Append('-');
}
res.Append("0.");
while (v < x / 10)
{
res.Append('0');
x /= 10;
}
res.Append(v);
int cut = res.Length - 1;
while (res[cut] == '0')
{
--cut;
}
res.Length = cut + 1;
return(res.ToString());
}
}
else
{
if (d <= 32767)
{
d += 0.005;
int v = (int)(d * 100);
if (v < byteCacheSize && byteCache[v] != null)
{
if (buf != null)
{
if (negative)
{
buf.Append((byte)'-');
}
buf.Append(byteCache[v]);
return(null);
}
else
{
String tmp = PdfEncodings.ConvertToString(byteCache[v], null);
if (negative)
{
tmp = "-" + tmp;
}
return(tmp);
}
}
if (buf != null)
{
if (v < byteCacheSize)
{
//create the cachebyte[]
byte[] cache;
int size = 0;
if (v >= 1000000)
{
//the original number is >=10000, we need 5 more bytes
size += 5;
}
else
{
if (v >= 100000)
{
//the original number is >=1000, we need 4 more bytes
size += 4;
}
else
{
if (v >= 10000)
{
//the original number is >=100, we need 3 more bytes
size += 3;
}
else
{
if (v >= 1000)
{
//the original number is >=10, we need 2 more bytes
size += 2;
}
else
{
if (v >= 100)
{
//the original number is >=1, we need 1 more bytes
size += 1;
}
}
}
}
}
//now we must check if we have a decimal number
if (v % 100 != 0)
{
//yes, do not forget the "."
size += 2;
}
if (v % 10 != 0)
{
size++;
}
cache = new byte[size];
int add = 0;
if (v >= 1000000)
{
cache[add++] = bytes[(v / 1000000)];
}
if (v >= 100000)
{
cache[add++] = bytes[(v / 100000) % 10];
}
if (v >= 10000)
{
cache[add++] = bytes[(v / 10000) % 10];
}
if (v >= 1000)
{
cache[add++] = bytes[(v / 1000) % 10];
}
if (v >= 100)
{
cache[add++] = bytes[(v / 100) % 10];
}
if (v % 100 != 0)
{
cache[add++] = (byte)'.';
cache[add++] = bytes[(v / 10) % 10];
if (v % 10 != 0)
{
cache[add++] = bytes[v % 10];
}
}
byteCache[v] = cache;
}
if (negative)
{
buf.Append((byte)'-');
}
if (v >= 1000000)
{
buf.Append(bytes[(v / 1000000)]);
}
if (v >= 100000)
{
buf.Append(bytes[(v / 100000) % 10]);
}
if (v >= 10000)
{
buf.Append(bytes[(v / 10000) % 10]);
}
if (v >= 1000)
{
buf.Append(bytes[(v / 1000) % 10]);
}
if (v >= 100)
{
buf.Append(bytes[(v / 100) % 10]);
}
if (v % 100 != 0)
{
buf.Append((byte)'.');
buf.Append(bytes[(v / 10) % 10]);
if (v % 10 != 0)
{
buf.Append(bytes[v % 10]);
}
}
return(null);
}
else
{
StringBuilder res = new StringBuilder();
if (negative)
{
res.Append('-');
}
if (v >= 1000000)
{
res.Append(chars[(v / 1000000)]);
}
if (v >= 100000)
{
res.Append(chars[(v / 100000) % 10]);
}
if (v >= 10000)
{
res.Append(chars[(v / 10000) % 10]);
}
if (v >= 1000)
{
res.Append(chars[(v / 1000) % 10]);
}
if (v >= 100)
{
res.Append(chars[(v / 100) % 10]);
}
if (v % 100 != 0)
{
res.Append('.');
res.Append(chars[(v / 10) % 10]);
if (v % 10 != 0)
{
res.Append(chars[v % 10]);
}
}
return(res.ToString());
}
}
else
{
d += 0.5;
long v = (long)d;
if (negative)
{
return("-" + System.Convert.ToString(v));
}
else
{
return(System.Convert.ToString(v));
}
}
}
}
/// <summary>Appends another <CODE>ByteBufferOutputStream</CODE> to this buffer.</summary>
/// <param name="buf">the <CODE>ByteBufferOutputStream</CODE> to be appended</param>
/// <returns>a reference to this <CODE>ByteBufferOutputStream</CODE> object</returns>
public virtual iText.Kernel.Pdf.ByteBufferOutputStream Append(iText.Kernel.Pdf.ByteBufferOutputStream
buf)
{
return(Append(buf.buf, 0, buf.count));
}
