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- Fixed: Old-style ACS has the string table record offsets from the start of the object file to

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the strings, not from the start of the string table, so UnescapeStringTable() needs to be
  told where the offsets are based.

SVN r3436 (trunk)
This commit is contained in:
Randy Heit 2012-03-15 19:08:19 +00:00
parent 58f7e72d1b
commit ba2e8b2461
2 changed files with 15 additions and 7 deletions
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20
src/p_acs.cpp
View file

@ -1169,7 +1169,7 @@ FBehavior::FBehavior (int lumpnum, FileReader * fr, int len)
{
StringTable = LittleLong(((DWORD *)Data)[1]);
StringTable += LittleLong(((DWORD *)(Data + StringTable))[0]) * 12 + 4;
UnescapeStringTable(Data + StringTable, false);
UnescapeStringTable(Data + StringTable, Data, false);
}
else
{
@ -1178,7 +1178,7 @@ FBehavior::FBehavior (int lumpnum, FileReader * fr, int len)
if (strings != NULL)
{
StringTable = DWORD(strings - Data + 8);
UnescapeStringTable(strings + 8, true);
UnescapeStringTable(strings + 8, NULL, true);
}
else
{
@ -1621,7 +1621,7 @@ void FBehavior::LoadScriptsDirectory ()
scripts.b = FindChunk(MAKE_ID('S','N','A','M'));
if (scripts.dw != NULL)
{
UnescapeStringTable(scripts.b + 8, false);
UnescapeStringTable(scripts.b + 8, NULL, false);
for (i = 0; i < NumScripts; ++i)
{
// ACC stores script names as an index into the SNAM chunk, with the first index as
@ -1688,15 +1688,23 @@ void FBehavior::UnencryptStrings ()
// FBehavior :: UnescapeStringTable
//
// Processes escape sequences for every string in a string table.
// Chunkstart points to the string table. Datastart points to the base address
// for offsets in the string table; if NULL, it will use chunkstart. If
// has_padding is true, then this is a STRL chunk with four bytes of padding
// on either side of the string count.
//
//============================================================================
void FBehavior::UnescapeStringTable(BYTE *chunkstart, bool has_padding)
void FBehavior::UnescapeStringTable(BYTE *chunkstart, BYTE *datastart, bool has_padding)
{
assert(chunkstart != NULL);
DWORD *chunk = (DWORD *)chunkstart;
if (datastart == NULL)
{
datastart = chunkstart;
}
if (!has_padding)
{
chunk[0] = LittleLong(chunk[0]);
@ -1704,7 +1712,7 @@ void FBehavior::UnescapeStringTable(BYTE *chunkstart, bool has_padding)
{
int ofs = LittleLong(chunk[1 + strnum]); // Byte swap offset, if needed.
chunk[1 + strnum] = ofs;
strbin((char *)chunk + ofs);
strbin((char *)datastart + ofs);
}
}
else
@ -1714,7 +1722,7 @@ void FBehavior::UnescapeStringTable(BYTE *chunkstart, bool has_padding)
{
int ofs = LittleLong(chunk[3 + strnum]); // Byte swap offset, if needed.
chunk[3 + strnum] = ofs;
strbin((char *)chunk + ofs);
strbin((char *)datastart + ofs);
}
}
}

2
src/p_acs.h
View file

@ -220,7 +220,7 @@ private:
static int STACK_ARGS SortScripts (const void *a, const void *b);
void UnencryptStrings ();
void UnescapeStringTable(BYTE *chunkstart, bool haspadding);
void UnescapeStringTable(BYTE *chunkstart, BYTE *datastart, bool haspadding);
int FindStringInChunk (DWORD *chunk, const char *varname) const;
const char *LookupString (DWORD index) const;