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Fixed a bug where saving WADs that didn't have their data starting right after the header would corrupt the file. Fixes #531

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biwa 2021-02-27 17:47:37 +01:00 committed by spherallic
parent 0043160e30
commit 6c55197264
1 changed files with 49 additions and 6 deletions
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49
Source/Core/General/MapManager.cs
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@ -956,14 +956,37 @@ namespace CodeImp.DoomBuilder
if (isSaveAs)
{
// Copy if original file still exists
if(File.Exists(filepathname)) File.Copy(filepathname, newfilepathname, true);
if (File.Exists(filepathname))
File.Copy(filepathname, newfilepathname, true);
}
if (File.Exists(newfilepathname))
{
// If the target file exists, we need to rebuild it
// [ZZ] The original code here would do some weird trickery with tempfiles.
// I'm just finding the map lumps and deleting them on later stages.
// biwa. This somewhat restores the behavior that was change with commit b996d8a380056ed9cb3a3f90f3c534e29e77e53c
// Not rebuilding the WAD can cause issues with WADs that do not have their directory at the bottom.
// See https://github.com/jewalky/UltimateDoomBuilder/issues/531
origwadfile = newfilepathname + ".temp";
File.Move(newfilepathname, origwadfile);
// Open original file
WAD origwad = new WAD(origwadfile, true);
// Create new target file
targetwad = new WAD(newfilepathname) { IsIWAD = origwad.IsIWAD }; //mxd. Let's preserve wad type
CopyAllLumps(origwad, targetwad);
// Close original file and delete it
origwad.Dispose();
File.Delete(origwadfile);
}
else
{
// Create new target file
targetwad = new WAD(newfilepathname);
}
}
catch(Exception e)
{
General.ShowErrorMessage("Unable to write the map to target file \"" + newfilepathname + "\":\n" + e.Message, MessageBoxButtons.OK);
@ -1553,6 +1576,26 @@ namespace CodeImp.DoomBuilder
return tgtheaderindex;
}
/// <summary>
/// Copies all lumps from one WAD to another
/// </summary>
/// <param name="source">Source WAD</param>
/// <param name="target">Target WAD</param>
private static void CopyAllLumps(WAD source, WAD target)
{
// Go for all lumps
for (int i = 0; i < source.Lumps.Count; i++)
{
Lump srclump = source.Lumps[i];
// Copy lump over!
Lump tgtlump = target.Insert(srclump.Name, target.Lumps.Count, srclump.Length, false);
srclump.CopyTo(tgtlump);
}
target.WriteHeaders();
}
// This copies specific map lumps from one WAD to another
private void CopyLumpsByType(WAD source, string sourcemapname,
WAD target, string targetmapname,