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cabinet: Remove a no longer valid comment about seeking and restoring CAB position.

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Dmitry Timoshkov 2013-12-25 13:25:04 +09:00 committed by Alexandre Julliard
parent 4ddb9f6915
commit 3b8f4a280c
1 changed files with 0 additions and 30 deletions
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dlls/cabinet/fdi.c
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@ -543,36 +543,6 @@ static BOOL FDI_read_entries(
TRACE("(fdi == ^%p, hf == %ld, pfdici == ^%p)\n", fdi, hf, pfdici);
/*
* FIXME: I just noticed that I am memorizing the initial file pointer
* offset and restoring it before reading in the rest of the header
* information in the cabinet. Perhaps that's correct -- that is, perhaps
* this API is supposed to support "streaming" cabinets which are embedded
* in other files, or cabinets which begin at file offsets other than zero.
* Otherwise, I should instead go to the absolute beginning of the file.
* (Either way, the semantics of wine's FDICopy require me to leave the
* file pointer where it is afterwards -- If Windows does not do so, we
* ought to duplicate the native behavior in the FDIIsCabinet API, not here.
*
* So, the answer lies in Windows; will native cabinet.dll recognize a
* cabinet "file" embedded in another file? Note that cabextract.c does
* support this, which implies that Microsoft's might. I haven't tried it
* yet so I don't know. ATM, most of wine's FDI cabinet routines (except
* this one) would not work in this way. To fix it, we could just make the
* various references to absolute file positions in the code relative to an
* initial "beginning" offset. Because the FDICopy API doesn't take a
* file-handle like this one, we would therein need to search through the
* file for the beginning of the cabinet (as we also do in cabextract.c).
* Note that this limits us to a maximum of one cabinet per. file: the first.
*
* So, in summary: either the code below is wrong, or the rest of fdi.c is
* wrong... I cannot imagine that both are correct ;) One of these flaws
* should be fixed after determining the behavior on Windows. We ought
* to check both FDIIsCabinet and FDICopy for the right behavior.
*
* -gmt
*/
/* read in the CFHEADER */
if (fdi->read(hf, buf, cfhead_SIZEOF) != cfhead_SIZEOF) {
if (pmii) set_error( fdi, FDIERROR_NOT_A_CABINET, 0 );