DocumentID: ECMA-376/Part2/9.2 Title: ECMA-376, Part2: 9.2 Mapping to a ZIP Archive Extracted-From: ECMA-376 Office Open XML File Formats, 1st Edition / December 2006 Warning: Coverted to HTML format by a script known to have bugs
This Open Packaging specification defines a mapping for the ZIP archive format. Future versions of this Open Packaging specification might provide additional mappings.
A ZIP archive is a ZIP file as defined in the ZIP file format specification excluding all elements of that specification related to encryption, decryption, or digital signatures. A ZIP archive contains ZIP items. [Note: ZIP items become files when the archive is unzipped. When users unzip a ZIP-based package, they see a set of files and folders that reflects the parts in the package and their hierarchical naming structure. end note]
Table 9--2, Package model components and their physical representations, shows the various components of the package model and their corresponding physical representation in a ZIP archive.
Table 9--2. Package model components and their physical representations
|
Package model component |
Physical representation |
|---|---|
|
Package |
ZIP archive file |
|
Part |
ZIP item |
|
Part name |
Stored in item header (and ZIP central directory as appropriate). See §9.2.3 for conversion rules. |
|
Part content type |
ZIP item containing XML that identifies the content types for each part according to the pattern described in §9.1.2.1. |
|
Growth hint |
Padding reserved in the ZIP Extra field in the local header that precedes the item. See §9.2.7 for a detailed description of the data structure. |