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Implement bundle properties #3

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opened 2023-01-06 12:49:38 +01:00 by lucas · 1 comment

lucas commented

2023-01-06 12:49:38 +01:00

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The 256 bytes near the start of the bundle are actually an array of 32 IdString64s, that Fatshark calls a PropertyArray. These properties relate to file variants.

Presumably the variant bit field functions as an index into the array, and each entry in the array is the hashed name of that variant. E.g. many bundles have hashes there that map to languages like de or fr.

When building the name for a file, the variant should be used to look up the relevant bundle property, then the hash should be looked up in the dictionary.

I should probably add a separate dictionary group, as the properties are generic, and don't have to be just languages.

The 256 bytes near the start of the bundle are actually an array of 32 `IdString64`s, that Fatshark calls a `PropertyArray`. These properties relate to file variants. Presumably the `variant` bit field functions as an index into the array, and each entry in the array is the hashed name of that variant. E.g. many bundles have hashes there that map to languages like `de` or `fr`. When building the name for a file, the `variant` should be used to look up the relevant bundle property, then the hash should be looked up in the dictionary. I should probably add a separate dictionary group, as the properties are generic, and don't have to be just languages.

lucas added the

kind

enhancement

part/bundle

labels 2023-01-06 12:49:56 +01:00

lucas referenced this issue from a commit

2023-01-06 12:52:23 +01:00

feat: Recognize bundle properties

lucas added reference feat/bundle_properties

2023-01-06 12:52:30 +01:00

lucas referenced this issue from a commit

2023-01-06 18:54:41 +01:00

feat: Recognize bundle properties

lucas added the

crate/sdk

label 2023-01-27 16:24:29 +01:00

lucas added the

stage

design

label 2023-02-21 22:52:06 +01:00

lucas commented

2023-02-25 13:53:00 +01:00

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Apparently, they are shared across all bundles, even though they are written to each individual one:

  db_properties = db->properties(db);
  for ( i = 0; i < 0x20; ++i )
  {
    if ( i >= db_properties->_size )
    {
      id._id = 0i64;
      p_id = (char *)&id;
    }
    else
    {
      p_id = (char *)&db_properties->_data[i];
    }
    stingray::OutputArchive::write(&out, p_id, 8u);
  }

Apparently, they are shared across all bundles, even though they are written to each individual one: ```c db_properties = db->properties(db); for ( i = 0; i < 0x20; ++i ) { if ( i >= db_properties->_size ) { id._id = 0i64; p_id = (char *)&id; } else { p_id = (char *)&db_properties->_data[i]; } stingray::OutputArchive::write(&out, p_id, 8u); } ```

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Reference: bitsquid_dt/dtmt#3

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