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GsfInfileTar second pass

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This commit is contained in:
Matt Nadareski
2022-06-16 16:43:07 -07:00
parent b22641b7ab
commit e3e8a1170f
1 changed files with 27 additions and 22 deletions
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49
BurnOutSharp/External/libgsf/Input/GsfInfileTar.cs vendored
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@@ -117,7 +117,7 @@ namespace LibGSF.Input
/// <summary>
/// Private constructor
/// </summary>
private GsfInfileTar() => InitInfo();
private GsfInfileTar() { }
/// <summary>
/// Opens the root directory of a Tar file.
@@ -133,7 +133,7 @@ namespace LibGSF.Input
GsfInfileTar tar = new GsfInfileTar
{
Source = source,
Source = GsfInputProxy.Create(source),
};
if (tar.Err != null)
@@ -142,6 +142,8 @@ namespace LibGSF.Input
return null;
}
tar.InitInfo();
return tar;
}
@@ -168,8 +170,10 @@ namespace LibGSF.Input
return null;
}
GsfInfileTar res = new GsfInfileTar();
res.Source = Source;
GsfInfileTar res = new GsfInfileTar
{
Source = Source,
};
for (int i = 0; i < Children.Count; i++)
{
@@ -198,8 +202,7 @@ namespace LibGSF.Input
/// <inheritdoc/>
public override GsfInput ChildByIndex(int i, ref Exception error)
{
if (error != null)
error = null;
error = null;
if (i < 0 || i >= Children.Count)
return null;
@@ -287,7 +290,7 @@ namespace LibGSF.Input
ModTime = null,
Dir = new GsfInfileTar
{
Source = this.Source,
Source = Source,
Name = name,
}
};
@@ -302,34 +305,34 @@ namespace LibGSF.Input
private GsfInfileTar DirectoryForFile(string name, bool last)
{
GsfInfileTar dir = this;
string s = name;
int sPtr = 0; // s[0]
int s = 0; // name[0]
while (true)
{
int s0 = sPtr;
int s0 = s;
// Find a directory component, if any.
while (true)
{
if (s[sPtr] == 0)
if (name[s] == 0)
{
if (last && sPtr != s0)
if (last && s != s0)
break;
else
return dir;
}
// This is deliberately slash-only.
if (s[sPtr] == '/')
if (name[s] == '/')
break;
sPtr++;
s++;
}
string dirname = s.Substring(s0, sPtr - s0);
while (s[sPtr] == '/')
string dirname = name.Substring(s0, s - s0);
while (name[s] == '/')
{
sPtr++;
s++;
}
if (dirname != ".")
@@ -353,10 +356,10 @@ namespace LibGSF.Input
long pos0 = Source.CurrentOffset;
string pending_longname = null;
TarHeader header = new TarHeader();
TarHeader header;
TarHeader end = new TarHeader();
byte[] headerBytes = new byte[HEADER_SIZE];
byte[] headerBytes;
byte[] endBytes = new byte[HEADER_SIZE];
while (Err == null && (headerBytes = Source.Read(HEADER_SIZE, null)) != null)
@@ -380,7 +383,7 @@ namespace LibGSF.Input
Array.Copy(headerBytes, 345, header.Prefix, 0, 155);
Array.Copy(headerBytes, 500, header.Filler, 0, 12);
if (header.Filler.Length == end.Filler.Length && header.Filler.SequenceEqual(end.Filler))
if (header.Filler.Length != end.Filler.Length || !header.Filler.SequenceEqual(end.Filler))
{
Err = new Exception("Invalid tar header");
break;
@@ -411,7 +414,6 @@ namespace LibGSF.Input
case 0:
{
// Regular file.
GsfInfileTar dir;
int n = 0, s; // name[0]
// This is deliberately slash-only.
@@ -429,16 +431,18 @@ namespace LibGSF.Input
Dir = null,
};
dir = DirectoryForFile(name, false);
GsfInfileTar dir = DirectoryForFile(name, false);
dir.Children.Add(c);
break;
}
case (byte)'5':
{
// Directory
DirectoryForFile(name, true);
break;
}
case (byte)'L':
{
if (pending_longname != null || name != MAGIC_LONGNAME)
@@ -457,6 +461,7 @@ namespace LibGSF.Input
pending_longname = Encoding.UTF8.GetString(n);
break;
}
default:
// Other -- ignore
break;