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(EAGLS): detect non-encrypted archives.
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@ -107,7 +107,8 @@ namespace GameRes.Formats.Eagls
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if (dir[0].Name.HasExtension ("gr")) // CG archive
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if (dir[0].Name.HasExtension ("gr")) // CG archive
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{
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{
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var rng = DetectEncryptionScheme (file, dir[0]);
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var rng = DetectEncryptionScheme (file, dir[0]);
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return new EaglsArchive (file, this, dir, new CgEncryption (rng));
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if (rng != null)
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return new EaglsArchive (file, this, dir, new CgEncryption (rng));
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}
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}
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else if (has_scripts)
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else if (has_scripts)
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{
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{
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@ -155,6 +156,8 @@ namespace GameRes.Formats.Eagls
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IRandomGenerator DetectEncryptionScheme (ArcView file, Entry first_entry)
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IRandomGenerator DetectEncryptionScheme (ArcView file, Entry first_entry)
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{
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{
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int signature = (file.View.ReadInt32 (first_entry.Offset) >> 8) & 0xFFFF;
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int signature = (file.View.ReadInt32 (first_entry.Offset) >> 8) & 0xFFFF;
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if (0x4D42 == signature) // 'BM'
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return null;
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byte seed = file.View.ReadByte (first_entry.Offset+first_entry.Size-1);
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byte seed = file.View.ReadByte (first_entry.Offset+first_entry.Size-1);
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IRandomGenerator[] rng_list = {
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IRandomGenerator[] rng_list = {
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new LehmerRandomGenerator(),
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new LehmerRandomGenerator(),
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