/// <summary>
/// Finds column by name in results.
/// Returns 0-based index, or -1 if not found.
/// </summary>
/// <param name="name">Column name in results, as returned by sqlite3_column_name. Case-sensitive.</param>
public int ColumnIndex(string name)
{
int n = ColumnCount;
if (n > 0 && !name.NE())
{
if (AStringUtil.IsAscii(name))
{
for (int i = 0; i < n; i++)
{
byte *b = SLApi.sqlite3_column_name(_st, i);
if (BytePtr_.AsciiEq(b, name))
{
return(i);
}
}
}
else
{
var bname = AConvert.ToUtf8(name);
for (int i = 0; i < n; i++)
{
byte *b = SLApi.sqlite3_column_name(_st, i);
if (BytePtr_.Eq(b, bname))
{
return(i);
}
}
}
}
return(-1);
}
/// <summary>
/// Gets image type from string.
/// </summary>
/// <param name="prefixLength">Length of prefix "imagefile:" or "image:".</param>
/// <param name="s">File path etc. See <see cref="ImageType"/>. It is UTF8 because used directly with Scintilla text.</param>
/// <param name="length">If -1, calls CharPtr_.Length(s).</param>
internal static ImageType ImageTypeFromString(out int prefixLength, byte *s, int length = -1)
{
prefixLength = 0;
if (length < 0)
{
length = BytePtr_.Length(s);
}
if (length < 2)
{
return(default); //C:\x.bmp or .h
/// <summary>
/// Gets image type from string.
/// </summary>
/// <param name="anyFile">When the string is valid but not of any image type, return ShellIcon instead of None.</param>
/// <param name="s">File path etc. See <see cref="ImageType"/>.</param>
/// <param name="length">If -1, calls CharPtr_.Length(s).</param>
internal static ImageType ImageTypeFromString(bool anyFile, byte *s, int length = -1)
{
if (length < 0)
{
length = BytePtr_.Length(s);
}
if (length < (anyFile ? 2 : 8))
{
return(ImageType.None); //C:\x.bmp or .h
}
char c1 = (char)s[0], c2 = (char)s[1];
//special strings
switch (c1)
{
case '~': return((c2 == ':') ? ImageType.Base64CompressedBmp : ImageType.None);
case 'i': if (BytePtr_.AsciiStarts(s, "image:"))
{
return(ImageType.Base64PngGifJpg);
}
break;
case 'r': if (BytePtr_.AsciiStarts(s, "resource:"))
{
return(ImageType.Resource);
}
break;
}
//file path
if (length >= 8 && (c1 == '%' || (c2 == ':' && AChar.IsAsciiAlpha(c1)) || (c1 == '\\' && c2 == '\\'))) //is image file path?
{
byte *ext = s + length - 3;
if (ext[-1] == '.')
{
if (BytePtr_.AsciiStartsi(ext, "bmp"))
{
return(ImageType.Bmp);
}
if (BytePtr_.AsciiStartsi(ext, "png"))
{
return(ImageType.PngGifJpg);
}
if (BytePtr_.AsciiStartsi(ext, "gif"))
{
return(ImageType.PngGifJpg);
}
if (BytePtr_.AsciiStartsi(ext, "jpg"))
{
return(ImageType.PngGifJpg);
}
if (BytePtr_.AsciiStartsi(ext, "ico"))
{
return(ImageType.Ico);
}
if (BytePtr_.AsciiStartsi(ext, "cur"))
{
return(ImageType.Cur);
}
if (BytePtr_.AsciiStartsi(ext, "ani"))
{
return(ImageType.Cur);
}
}
else if (AChar.IsAsciiDigit(ext[2])) //can be like C:\x.dll,10
{
byte *k = ext + 1, k2 = s + 8;
for (; k > k2; k--)
{
if (!AChar.IsAsciiDigit(*k))
{
break;
}
}
if (*k == '-')
{
k--;
}
if (*k == ',' && k[-4] == '.' && AChar.IsAsciiAlpha(k[-1]))
{
return(ImageType.IconLib);
}
}
}
if (anyFile)
{
return(ImageType.ShellIcon); //can be other file type, URL, .ext, :: ITEMIDLIST, ::{CLSID}
}
return(ImageType.None);
}
