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Support unspecified DateTime values for DECDateTime

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This commit is contained in:
Michael Becker 2014-11-28 01:06:07 -05:00
parent ea4d34674a
commit 308667f61e
2 changed files with 158 additions and 147 deletions
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31
CSharp/Plugins/UniversalEditor.Plugins.FileSystem/DataFormats/FileSystem/ISO/ISODataFormat.cs
View File

@ -237,7 +237,7 @@ namespace UniversalEditor.DataFormats.FileSystem.ISO
return descriptor;
}
private DateTime ReadDECDateTime(IO.Reader br)
private DateTime? ReadDECDateTime(IO.Reader br)
{
string szYear = br.ReadFixedLengthString(4); // Year from 1 to 9999.
string szMonth = br.ReadFixedLengthString(2); // Month from 1 to 12.
@ -267,23 +267,34 @@ namespace UniversalEditor.DataFormats.FileSystem.ISO
}
catch (Exception ex)
{
return DateTime.Now;
return null;
}
}
private void WriteDECDateTime(IO.Writer bw, DateTime dt)
private void WriteDECDateTime(IO.Writer bw, DateTime? dt)
{
bw.WriteFixedLengthString(dt.Year.ToString(), 4, ' ');
bw.WriteFixedLengthString(dt.Month.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Day.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Hour.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Minute.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Second.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Millisecond.ToString(), 2, ' ');
if (dt == null)
{
bw.WriteFixedLengthString("0000000000000000");
}
else
{
bw.WriteFixedLengthString(dt.Value.Year.ToString(), 4, ' ');
bw.WriteFixedLengthString(dt.Value.Month.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Value.Day.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Value.Hour.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Value.Minute.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Value.Second.ToString(), 2, ' ');
bw.WriteFixedLengthString(dt.Value.Millisecond.ToString(), 2, ' ');
}
// Time zone offset from GMT in 15 minute intervals, starting at interval -48 (west) and running up to
// interval 52 (east). So value 0 indicates interval -48 which equals GMT-12 hours, and value 100
// indicates interval 52 which equals GMT+13 hours.
byte timeZoneOffset = 0;
if (dt != null)
{
}
bw.WriteByte(timeZoneOffset);
}

274
CSharp/Plugins/UniversalEditor.Plugins.FileSystem/DataFormats/FileSystem/ISO/Internal/PrimaryVolumeDescriptor.cs
View File

@ -5,144 +5,144 @@ using System.Text;
namespace UniversalEditor.DataFormats.FileSystem.ISO.Internal
{
internal struct PrimaryVolumeDescriptor
{
/// <summary>
/// Always 0x00.
/// </summary>
public byte unused1;
/// <summary>
/// The name of the system that can act upon sectors 0x00-0x0F for the volume.
/// </summary>
public string systemName;
/// <summary>
/// Identification of this volume.
/// </summary>
public string volumeName;
/// <summary>
/// All zeroes.
/// </summary>
public ulong unused2;
/// <summary>
/// Number of Logical Blocks in which the volume is recorded.
/// </summary>
public uint volumeSpaceSize;
/// <summary>
/// All zeroes.
/// </summary>
public byte[] unused3;
/// <summary>
/// The size of the set in this logical volume (number of disks).
/// </summary>
public ushort volumeSetSize;
/// <summary>
/// The number of this disk in the Volume Set.
/// </summary>
public ushort volumeSequenceNumber;
/// <summary>
/// The size in bytes of a logical block. NB: This means that a logical block on a CD could be something
/// other than 2 KiB!
/// </summary>
public ushort logicalBlockSize;
/// <summary>
/// The size in bytes of the path table.
/// </summary>
public uint pathTableSize;
/// <summary>
/// LBA location of the path table. The path table pointed to contains only little-endian values.
/// </summary>
public uint pathTableLocationTypeL;
/// <summary>
/// LBA location of the optional path table. The path table pointed to contains only little-endian values.
/// Zero means that no optional path table exists.
/// </summary>
public uint optionalPathTableLocationTypeL;
/// <summary>
/// LBA location of the path table. The path table pointed to contains only big-endian values.
/// </summary>
public uint pathTableLocationTypeM;
/// <summary>
/// LBA location of the optional path table. The path table pointed to contains only big-endian values. Zero
/// means that no optional path table exists.
/// </summary>
public uint optionalPathTableLocationTypeM;
internal struct PrimaryVolumeDescriptor
{
/// <summary>
/// Always 0x00.
/// </summary>
public byte unused1;
/// <summary>
/// The name of the system that can act upon sectors 0x00-0x0F for the volume.
/// </summary>
public string systemName;
/// <summary>
/// Identification of this volume.
/// </summary>
public string volumeName;
/// <summary>
/// All zeroes.
/// </summary>
public ulong unused2;
/// <summary>
/// Number of Logical Blocks in which the volume is recorded.
/// </summary>
public uint volumeSpaceSize;
/// <summary>
/// All zeroes.
/// </summary>
public byte[] unused3;
/// <summary>
/// The size of the set in this logical volume (number of disks).
/// </summary>
public ushort volumeSetSize;
/// <summary>
/// The number of this disk in the Volume Set.
/// </summary>
public ushort volumeSequenceNumber;
/// <summary>
/// The size in bytes of a logical block. NB: This means that a logical block on a CD could be something
/// other than 2 KiB!
/// </summary>
public ushort logicalBlockSize;
/// <summary>
/// The size in bytes of the path table.
/// </summary>
public uint pathTableSize;
/// <summary>
/// LBA location of the path table. The path table pointed to contains only little-endian values.
/// </summary>
public uint pathTableLocationTypeL;
/// <summary>
/// LBA location of the optional path table. The path table pointed to contains only little-endian values.
/// Zero means that no optional path table exists.
/// </summary>
public uint optionalPathTableLocationTypeL;
/// <summary>
/// LBA location of the path table. The path table pointed to contains only big-endian values.
/// </summary>
public uint pathTableLocationTypeM;
/// <summary>
/// LBA location of the optional path table. The path table pointed to contains only big-endian values. Zero
/// means that no optional path table exists.
/// </summary>
public uint optionalPathTableLocationTypeM;
/// <summary>
/// Note that this is not an LBA address, it is the actual Directory Record, which contains a zero-length
/// Directory Identifier, hence the fixed 34 byte size.
/// </summary>
public byte[] rootDirectoryEntry;
/// <summary>
/// Note that this is not an LBA address, it is the actual Directory Record, which contains a zero-length
/// Directory Identifier, hence the fixed 34 byte size.
/// </summary>
public byte[] rootDirectoryEntry;
/// <summary>
/// Identifier of the volume set of which this volume is a member.
/// </summary>
public string volumeSet;
/// <summary>
/// The volume publisher. For extended publisher information, the first byte should be 0x5F, followed by the
/// filename of a file in the root directory. If not specified, all bytes should be 0x20.
/// </summary>
public string publisher;
/// <summary>
/// The identifier of the person(s) who prepared the data for this volume. For extended preparation
/// information, the first byte should be 0x5F, followed by the filename of a file in the root directory. If
/// not specified, all bytes should be 0x20.
/// </summary>
public string dataPreparer;
/// <summary>
/// Identifies how the data are recorded on this volume. For extended information, the first byte should be
/// 0x5F, followed by the filename of a file in the root directory. If not specified, all bytes should be
/// 0x20.
/// </summary>
public string application;
/// <summary>
/// Filename of a file in the root directory that contains copyright information for this volume set. If not
/// specified, all bytes should be 0x20.
/// </summary>
public string copyrightFile;
/// <summary>
/// Filename of a file in the root directory that contains abstract information for this volume set. If not
/// specified, all bytes should be 0x20.
/// </summary>
public string abstractFile;
/// <summary>
/// Filename of a file in the root directory that contains bibliographic information for this volume set. If
/// not specified, all bytes should be 0x20.
/// </summary>
public string bibliographicFile;
/// <summary>
/// Identifier of the volume set of which this volume is a member.
/// </summary>
public string volumeSet;
/// <summary>
/// The volume publisher. For extended publisher information, the first byte should be 0x5F, followed by the
/// filename of a file in the root directory. If not specified, all bytes should be 0x20.
/// </summary>
public string publisher;
/// <summary>
/// The identifier of the person(s) who prepared the data for this volume. For extended preparation
/// information, the first byte should be 0x5F, followed by the filename of a file in the root directory. If
/// not specified, all bytes should be 0x20.
/// </summary>
public string dataPreparer;
/// <summary>
/// Identifies how the data are recorded on this volume. For extended information, the first byte should be
/// 0x5F, followed by the filename of a file in the root directory. If not specified, all bytes should be
/// 0x20.
/// </summary>
public string application;
/// <summary>
/// Filename of a file in the root directory that contains copyright information for this volume set. If not
/// specified, all bytes should be 0x20.
/// </summary>
public string copyrightFile;
/// <summary>
/// Filename of a file in the root directory that contains abstract information for this volume set. If not
/// specified, all bytes should be 0x20.
/// </summary>
public string abstractFile;
/// <summary>
/// Filename of a file in the root directory that contains bibliographic information for this volume set. If
/// not specified, all bytes should be 0x20.
/// </summary>
public string bibliographicFile;
/// <summary>
/// The date and time of when the volume was created.
/// </summary>
public DateTime timestampVolumeCreation;
/// <summary>
/// The date and time of when the volume was modified.
/// </summary>
public DateTime timestampVolumeModification;
/// <summary>
/// The date and time after which this volume is considered to be obsolete. If not specified, then the
/// volume is never considered to be obsolete.
/// </summary>
public DateTime timestampVolumeExpiration;
/// <summary>
/// The date and time after which the volume may be used. If not specified, the volume may be used
/// immediately.
/// </summary>
public DateTime timestampVolumeEffective;
/// <summary>
/// The directory records and path table version (always 0x01).
/// </summary>
public byte fileStructureVersion;
/// <summary>
/// Always 0x00.
/// </summary>
public byte unused4;
/// <summary>
/// 512 bytes. Contents not defined by ISO 9660.
/// </summary>
public byte[] applicationSpecific;
/// <summary>
/// 653 bytes. Reserved by ISO.
/// </summary>
public byte[] reserved;
}
/// <summary>
/// The date and time of when the volume was created.
/// </summary>
public DateTime? timestampVolumeCreation;
/// <summary>
/// The date and time of when the volume was modified.
/// </summary>
public DateTime? timestampVolumeModification;
/// <summary>
/// The date and time after which this volume is considered to be obsolete. If not specified, then the
/// volume is never considered to be obsolete.
/// </summary>
public DateTime? timestampVolumeExpiration;
/// <summary>
/// The date and time after which the volume may be used. If not specified, the volume may be used
/// immediately.
/// </summary>
public DateTime? timestampVolumeEffective;
/// <summary>
/// The directory records and path table version (always 0x01).
/// </summary>
public byte fileStructureVersion;
/// <summary>
/// Always 0x00.
/// </summary>
public byte unused4;
/// <summary>
/// 512 bytes. Contents not defined by ISO 9660.
/// </summary>
public byte[] applicationSpecific;
/// <summary>
/// 653 bytes. Reserved by ISO.
/// </summary>
public byte[] reserved;
}
}