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Remember decompression state during extraction, so as to avoid 

unnecessary work.
This commit is contained in:
Gregory M. Turner 2003-08-02 00:42:23 +00:00 committed by Alexandre Julliard
parent 9e2b15da17
commit b8675b4312
1 changed files with 53 additions and 27 deletions
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80
dlls/cabinet/fdi.c
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@ -234,7 +234,7 @@ char *FDI_read_string(HFDI hfdi, INT_PTR hf, long cabsize)
if (!ok) {
if (len == maxlen) {
ERR("WARNING: cabinet is truncated\n");
ERR("cabinet is truncated\n");
break;
}
len += 256;
@ -2216,6 +2216,7 @@ BOOL __cdecl FDICopy(
if (filehf) {
cab_UWORD comptype = fol->comp_type;
int ct1 = comptype & cffoldCOMPTYPE_MASK;
int ct2 = CAB(current) ? (CAB(current)->comp_type & cffoldCOMPTYPE_MASK) : 0;
int err = 0;
TRACE("Extracting file %s as requested by callee.\n", debugstr_a(file->filename));
@ -2224,11 +2225,35 @@ BOOL __cdecl FDICopy(
CAB(hfdi) = hfdi;
CAB(filehf) = filehf;
CAB(cabhf) = cabhf;
CAB(current) = fol;
CAB(decomp_cab) = NULL;
/* set up the appropriate decompressor */
switch (ct1) {
/* Was there a change of folder? Compression type? Did we somehow go backwards? */
if ((ct1 != ct2) || (CAB(current) != fol) || (file->offset < CAB(offset))) {
TRACE("Resetting folder for file %s.\n", debugstr_a(file->filename));
/* free stuff for the old decompressor */
switch (ct2) {
case cffoldCOMPTYPE_LZX:
if (LZX(window)) {
PFDI_FREE(hfdi, LZX(window));
LZX(window) = NULL;
}
break;
case cffoldCOMPTYPE_QUANTUM:
if (QTM(window)) {
PFDI_FREE(hfdi, QTM(window));
QTM(window) = NULL;
}
break;
}
CAB(decomp_cab) = NULL;
PFDI_SEEK(CAB(hfdi), CAB(cabhf), fol->offset, SEEK_SET);
CAB(offset) = 0;
CAB(outlen) = 0;
/* initialize the new decompressor */
switch (ct1) {
case cffoldCOMPTYPE_NONE:
CAB(decompress) = NONEfdi_decomp;
break;
@ -2245,8 +2270,11 @@ BOOL __cdecl FDICopy(
break;
default:
err = DECR_DATAFORMAT;
}
}
CAB(current) = fol;
switch (err) {
case DECR_OK:
break;
@ -2263,10 +2291,6 @@ BOOL __cdecl FDICopy(
goto bail_and_fail;
}
PFDI_SEEK(CAB(hfdi), CAB(cabhf), fol->offset, SEEK_SET);
CAB(offset) = 0;
CAB(outlen) = 0;
if (file->offset > CAB(offset)) {
/* decode bytes and send them to /dev/null */
switch ((err = fdi_decomp(file, 0, decomp_state, pszCabPath, pfnfdin, pvUser))) {
@ -2317,24 +2341,6 @@ BOOL __cdecl FDICopy(
goto bail_and_fail;
}
/* free decompression temps */
switch (ct1) {
case cffoldCOMPTYPE_LZX:
if (LZX(window)) {
PFDI_FREE(hfdi, LZX(window));
LZX(window) = NULL;
}
break;
case cffoldCOMPTYPE_QUANTUM:
if (QTM(window)) {
PFDI_FREE(hfdi, QTM(window));
QTM(window) = NULL;
}
break;
default:
break;
}
/* fdintCLOSE_FILE_INFO notification */
ZeroMemory(&fdin, sizeof(FDINOTIFICATION));
fdin.pv = pvUser;
@ -2359,6 +2365,16 @@ BOOL __cdecl FDICopy(
}
}
/* free decompression temps */
if (LZX(window)) {
PFDI_FREE(hfdi, LZX(window));
LZX(window) = NULL;
}
if (QTM(window)) {
PFDI_FREE(hfdi, QTM(window));
QTM(window) = NULL;
}
while (decomp_state) {
fdi_decomp_state *prev_fds;
@ -2391,6 +2407,16 @@ BOOL __cdecl FDICopy(
bail_and_fail: /* here we free ram before error returns */
/* free decompression temps */
if (LZX(window)) {
PFDI_FREE(hfdi, LZX(window));
LZX(window) = NULL;
}
if (QTM(window)) {
PFDI_FREE(hfdi, QTM(window));
QTM(window) = NULL;
}
while (decomp_state) {
fdi_decomp_state *prev_fds;