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(ReadIndexV2): use Binary.GetCString instead of ArcView.ReadString.

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temporary buffer allocation within ArcView.ReadString makes reading of
large indices (20000+ entries) somewhat slow.
This commit is contained in:
morkt 2015-12-23 09:42:08 +04:00
parent ab0ef6f3c5
commit bf676b9198
1 changed files with 10 additions and 3 deletions
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13
ArcFormats/Escude/ArcBIN.cs
View File

@ -103,14 +103,21 @@ namespace GameRes.Formats.Escude
var index = m_file.View.ReadBytes (0x14, index_size);
if (index.Length != index_size)
return null;
uint filenames_base = 0x14 + index_size;
var names = m_file.View.ReadBytes (filenames_base, names_size);
if (names.Length != names_size)
return null;
Decrypt (index);
int index_offset = 0;
uint filenames_base = 0x14 + index_size;
var dir = new List<Entry> ((int)m_count);
for (uint i = 0; i < m_count; ++i)
{
uint filename_offset = LittleEndian.ToUInt32 (index, index_offset);
var name = m_file.View.ReadString (filenames_base+filename_offset, names_size-filename_offset);
int filename_offset = LittleEndian.ToInt32 (index, index_offset);
if (filename_offset < 0 || filename_offset >= names.Length)
return null;
var name = Binary.GetCString (names, filename_offset, names.Length-filename_offset);
if (0 == name.Length)
return null;
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = LittleEndian.ToUInt32 (index, index_offset+4);
entry.Size = LittleEndian.ToUInt32 (index, index_offset+8);