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51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
# Stuffit format
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All intergers are big-endians.
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## Archive header
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| **Offset** | **Length** | **Contents** |
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|:-----------|:-----------|:-------------|
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| 00 | Word | Magic number 1 (see below) |
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| 04 | Half | Number of entries in root directory |
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| 06 | Word | Total size of archive |
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| 10 | Word | Magic number 2 (always `0x724c6175`) |
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| 14 | Byte | Version |
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| 15 | Byte | Unknown |
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| 16 | Word | Header size (if version not `1`) |
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| 20 | Half | CRC-16 of header |
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Magic number 1 must be one of the following values: `SIT!`, `ST46`, `ST50`,
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`ST60`, `ST65`, `STin`, `STi2`, `STi3`, `STi4`.
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## File / folder header
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| **Offset** | **Length** | **Contents** |
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|:-----------|:-----------|:-------------|
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| 000 | Byte | Resource fork compression method |
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| 001 | Byte | Data fork compression method |
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| 002 | Byte | File name length (in range 1-31) |
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| 003 | 63 bytes | File name (remaning bytes are zero) |
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| 066 | Word | Mac OS file type |
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| 070 | Word | Mac OS file creator |
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| 074 | Half | Mac OS Finder flags |
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| 076 | Word | Creation date (Mac OS format) |
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| 080 | Word | Modification date (Mac OS format) |
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| 084 | Word | Resource fork uncompressed length |
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| 088 | Word | Data fork uncompressed length |
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| 092 | Word | Resource fork compressed length |
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| 096 | Word | Data fork compressed length |
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| 100 | Half | Resource fork CRC-16 |
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| 102 | Half | Data fork CRC-16 |
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| 104 | 6 bytes | Unknown |
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| 110 | Half | Header CRC-16 |
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---------------------------
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**Sources**
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https://github.com/mietek/theunarchiver/wiki/StuffItFormat
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