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

Browse source 
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;