/// <summary>
/// Write a single Xiph tag to the file
/// This will overwrite the tag if it already exists, or create it if it doesn't
/// It will also create the Xiph tag block within the file if it doesn't already have one
/// This function writes to disk. If setting multiple tags consider using SetTags(OggTag[] Tags) to reduce the number of write operations
/// If setting an array, Tag.Values must contain at least one item. Tag.Value is ignored in this case
/// If setting a single value, Tag.Value must contain at least one character. Tag.Values is ignored in this case
/// </summary>
/// <param name="Tag">
/// The <see cref="OggTag"/> to write
/// </param>
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn SetTag(OggTag Tag)
{
// Validate Tag
if (Tag.IsEmpty)
{
return(OggTagWriteCommandReturn.InvalidValue);
}
if (Tag.Name.Length <= 0)
{
return(OggTagWriteCommandReturn.UnknownTag);
}
if (Tag.IsArray)
{
if (Tag.Values.Length <= 0)
{
return(OggTagWriteCommandReturn.InvalidValue);
}
}
else
{
if (Tag.Value.Length <= 0)
{
return(OggTagWriteCommandReturn.InvalidValue);
}
}
// Tag valid, try and write it
XiphComment XC = (XiphComment)m_TagLibFile.GetTag(TagTypes.Xiph, true);
if (XC != null)
{
string[] tmpStrArray;
if (Tag.IsArray)
{
tmpStrArray = Tag.Values;
}
else
{
tmpStrArray = new string[1]; tmpStrArray[0] = Tag.Value;
}
// Set field
XC.SetField(Tag.Name, tmpStrArray);
// Copy the XC instance into our file (not sure if this is needed)
XC.CopyTo(m_TagLibFile.Tag, true);
// Commit
m_TagLibFile.Save();
return(OggTagWriteCommandReturn.Success);
}
else
{
// If we're null something went wrong (we tried to create the XiphComment block and it failed probably)
return(OggTagWriteCommandReturn.Error);
}
}
/// <summary>
/// Retrieve an array of all tag values
/// Returns a zero-length array if no Xiph tags are found
/// </summary>
/// <returns>
/// An <see cref="OggTag[]"/> containing the returned values
/// </returns>
public OggTag[] GetTags()
{
XiphComment XC = (XiphComment)m_TagLibFile.GetTag(TagTypes.Xiph);
if (XC != null)
{
if (XC.FieldCount > 0)
{
OggTag[] tmpOggTag = new OggTag[XC.FieldCount];
int Index = 0;
foreach (string FieldName in XC)
{
string[] TagValue = XC.GetField(FieldName);
if (TagValue.Length == 0)
{
tmpOggTag[Index] = OggUtilities.GetEmptyTag(); // This should never happen, but I bet if I don't check it it will!
}
else
{
// Populate this tag
tmpOggTag[Index].Name = FieldName;
tmpOggTag[Index].IsArray = (TagValue.Length > 1);
tmpOggTag[Index].IsEmpty = false;
tmpOggTag[Index].Values = TagValue;
tmpOggTag[Index].Value = TagValue[0];
}
++Index; // Increment the index so we know which OggTag we're molesting
}
// Done! Return the heap of tags
return(tmpOggTag);
}
else
{
// Xiph tags contain no items
return(new OggTag[0]);
}
}
else
{
// No valid Xiph tags found
return(new OggTag[0]);
}
}
/// <summary>
/// Remove a tag from the file.
/// This command writes to disk.
/// </summary>
/// <param name="TagName">
/// An <see cref="OggTag"/> indicating which tag to remove
/// </param>
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn RemoveTag(OggTag Tag)
{
return(this.RemoveTag(Tag.Name));
}
/// <summary>
/// Write multiple Xiph tags to the file
/// This will overwrite any existing tags, and create them if they don't exist
/// It will also create the Xiph tag block within the file if it doesn't already have one
/// This function writes to disk. If setting only a single tag, consider using SetTag(OggTag Tag) to reduce the array handling overheads
/// If setting an array value Tags[i].Values must contain at least one item. Tags[i].Value is ignored in this case
/// If setting a single value, Tags[i].Value must contain at least one character. Tags[i].Values is ignored in this case
/// If AbortOnError is true, this function will abort (and not write) if any item in the Tags array is invalid.
/// If AbortOnError is false, this function will continue (and write) if items in the Tags array are invalid. It will still abort (and not write) if there are other errors.
/// </summary>
/// <param name="Tags">
/// An <see cref="OggTag[]"/> containing the tags to be written
/// </param>
/// <param name="AbortOnError">
/// A <see cref="System.bool"/> indicating whether to invalid items in the Tags array.
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn SetTags(OggTag[] Tags, bool AbortOnError)
{
// Check that the Tags array has at least one item in it
if (Tags.Length<1) { return OggTagWriteCommandReturn.UnknownTag; }
TagLib.Ogg.XiphComment XC = (TagLib.Ogg.XiphComment) m_TagLibFile.GetTag(TagTypes.Xiph, true);
if (XC != null)
{
// Write the tags to the 'virtual' file
foreach (OggTag Tag in Tags)
{
// Validate tag
if (Tag.IsEmpty) { if (AbortOnError) { return OggTagWriteCommandReturn.InvalidValue; } else { continue; } }
if (Tag.Name.Length<=0) { if (AbortOnError) { return OggTagWriteCommandReturn.UnknownTag; } else { continue; } }
if (Tag.IsArray) { if (Tag.Values.Length<=0) { if (AbortOnError) { return OggTagWriteCommandReturn.InvalidValue; } else { continue; } } } else { if (Tag.Value.Length<=0) { if (AbortOnError) { return OggTagWriteCommandReturn.InvalidValue; } else { continue; } } }
string[] tmpStrArray;
if (Tag.IsArray) { tmpStrArray = Tag.Values; } else { tmpStrArray = new string[1]; tmpStrArray[0] = Tag.Value; }
// Write tag
XC.SetField(Tag.Name, tmpStrArray);
}
// Copy the XC instance into our file (not sure if this is needed)
XC.CopyTo(m_TagLibFile.Tag, true);
// Save to disk
m_TagLibFile.Save();
return OggTagWriteCommandReturn.Success;
}
else
{
// If we're null something went wrong (we tried to create the XiphComment block and it failed probably)
return OggTagWriteCommandReturn.Error;
}
}
/// <summary>
/// Write multiple Xiph tags to the file
/// This will overwrite any existing tags, and create them if they don't exist
/// It will also create the Xiph tag block within the file if it doesn't already have one
/// This function writes to disk. If setting only a single tag, consider using SetTag(OggTag Tag) to reduce the array handling overheads
/// If setting an array value Tags[i].Values must contain at least one item. Tags[i].Value is ignored in this case
/// If setting a single value, Tags[i].Value must contain at least one character. Tags[i].Values is ignored in this case
/// This function will abort (and not write) if any tag is invalid. Use SetTags(OggTag[] Tags, bool AbortOnError) to override this behaviour
/// </summary>
/// <param name="Tags">
/// An <see cref="OggTag[]"/> containing the tags to be written
/// </param>
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn SetTags(OggTag[] Tags)
{
return SetTags(Tags, true);
}
/// <summary>
/// Write a single Xiph tag to the file
/// This will overwrite the tag if it already exists, or create it if it doesn't
/// It will also create the Xiph tag block within the file if it doesn't already have one
/// This function writes to disk. If setting multiple tags consider using SetTags(OggTag[] Tags) to reduce the number of write operations
/// If setting an array, Tag.Values must contain at least one item. Tag.Value is ignored in this case
/// If setting a single value, Tag.Value must contain at least one character. Tag.Values is ignored in this case
/// </summary>
/// <param name="Tag">
/// The <see cref="OggTag"/> to write
/// </param>
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn SetTag(OggTag Tag)
{
// Validate Tag
if (Tag.IsEmpty) { return OggTagWriteCommandReturn.InvalidValue; }
if (Tag.Name.Length<=0) { return OggTagWriteCommandReturn.UnknownTag; }
if (Tag.IsArray) { if (Tag.Values.Length<=0) { return OggTagWriteCommandReturn.InvalidValue; } } else { if (Tag.Value.Length<=0) { return OggTagWriteCommandReturn.InvalidValue; } }
// Tag valid, try and write it
TagLib.Ogg.XiphComment XC = (TagLib.Ogg.XiphComment) m_TagLibFile.GetTag(TagTypes.Xiph, true);
if (XC != null)
{
string[] tmpStrArray;
if (Tag.IsArray) { tmpStrArray = Tag.Values; } else { tmpStrArray = new string[1]; tmpStrArray[0] = Tag.Value; }
// Set field
XC.SetField(Tag.Name, tmpStrArray);
// Copy the XC instance into our file (not sure if this is needed)
XC.CopyTo(m_TagLibFile.Tag, true);
// Commit
m_TagLibFile.Save();
return OggTagWriteCommandReturn.Success;
}
else
{
// If we're null something went wrong (we tried to create the XiphComment block and it failed probably)
return OggTagWriteCommandReturn.Error;
}
}
/// <summary>
/// Remove a tag from the file.
/// This command writes to disk.
/// </summary>
/// <param name="TagName">
/// An <see cref="OggTag"/> indicating which tag to remove
/// </param>
/// <returns>
/// An <see cref="OggTagWriteCommandReturn"/> indicating the result of the operation
/// </returns>
public OggTagWriteCommandReturn RemoveTag(OggTag Tag)
{
return this.RemoveTag(Tag.Name);
}
/// <summary>
/// Retrieve an array of all tag values
/// Returns a zero-length array if no Xiph tags are found
/// </summary>
/// <returns>
/// An <see cref="OggTag[]"/> containing the returned values
/// </returns>
public OggTag[] GetTags()
{
TagLib.Ogg.XiphComment XC = (TagLib.Ogg.XiphComment) m_TagLibFile.GetTag(TagTypes.Xiph);
if (XC != null)
{
if (XC.FieldCount>0)
{
OggTag[] tmpOggTag = new OggTag[XC.FieldCount];
int Index = 0;
foreach (string FieldName in XC)
{
string[] TagValue = XC.GetField(FieldName);
if (TagValue.Length==0)
{
tmpOggTag[Index] = OggUtilities.GetEmptyTag(); // This should never happen, but I bet if I don't check it it will!
}
else
{
// Populate this tag
tmpOggTag[Index].Name = FieldName;
tmpOggTag[Index].IsArray = (TagValue.Length>1);
tmpOggTag[Index].IsEmpty = false;
tmpOggTag[Index].Values = TagValue;
tmpOggTag[Index].Value = TagValue[0];
}
++Index; // Increment the index so we know which OggTag we're molesting
}
// Done! Return the heap of tags
return tmpOggTag;
}
else
{
// Xiph tags contain no items
return new OggTag[0];
}
}
else
{
// No valid Xiph tags found
return new OggTag[0];
}
}
