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Accept zlib format files as well when reading.

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svn-id: r25690
This commit is contained in:
Marcus Comstedt 2007-02-18 16:55:40 +00:00
parent da442dd2fb
commit 138b7bea41
1 changed files with 15 additions and 5 deletions
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20
backends/saves/compressed/compressed-saves.cpp
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@ -59,11 +59,18 @@ public:
// Verify file header is correct once more
w->seek(0, SEEK_SET);
assert(w->readUint16BE() == 0x1F8B);
uint16 header = w->readUint16BE();
assert(header == 0x1F8B ||
((header & 0x0F00) == 0x0800 && header % 31 == 0));
// Retrieve the original file size
w->seek(-4, SEEK_END);
_origSize = w->readUint32LE();
if(header == 0x1F8B) {
// Retrieve the original file size
w->seek(-4, SEEK_END);
_origSize = w->readUint32LE();
} else {
// Original size not available in zlib format
_origSize = 0;
}
_pos = 0;
w->seek(0, SEEK_SET);
@ -261,7 +268,10 @@ public:
Common::InSaveFile *wrapInSaveFile(Common::InSaveFile *toBeWrapped) {
#if defined(USE_ZLIB)
if (toBeWrapped) {
bool isCompressed = (toBeWrapped->readUint16BE() == 0x1F8B);
uint16 header = toBeWrapped->readUint16BE();
bool isCompressed = (header == 0x1F8B ||
((header & 0x0F00) == 0x0800 &&
header % 31 == 0));
toBeWrapped->seek(-2, SEEK_CUR);
if (isCompressed)
return new CompressedInSaveFile(toBeWrapped);