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34 lines
1.5 KiB
C#
34 lines
1.5 KiB
C#
namespace SabreTools.Models.PKZIP
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{
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/// <summary>
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/// (per Zbynek Vyskovsky) Defines alignment of data stream of this
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/// entry within the zip archive. Additionally, indicates whether the
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/// compression method should be kept when re-compressing the zip file.
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///
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/// The purpose of this extra field is to align specific resources to
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/// word or page boundaries so they can be easily mapped into memory.
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///
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/// The alignment field (lower 15 bits) defines the minimal alignment
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/// required by the data stream. Bit 15 of alignment field indicates
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/// whether the compression method of this entry can be changed when
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/// recompressing the zip file. The value 0 means the compression method
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/// should not be changed. The value 1 indicates the compression method
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/// may be changed. The padding field contains padding to ensure the correct
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/// alignment. It can be changed at any time when the offset or required
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/// alignment changes. (see https://issues.apache.org/jira/browse/COMPRESS-391)
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/// </summary>
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/// <remarks>Header ID = 0xa11e</remarks>
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/// <see href="https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT"/>
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public class DataStreamAlignment : ExtensibleDataField
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{
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/// <summary>
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/// Required alignment and indicator
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/// </summary>
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public ushort Alignment { get; set; }
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/// <summary>
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/// 0x00-padding
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/// </summary>
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public byte[]? Padding { get; set; }
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}
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} |