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New API call int iso_node_zf_by_magic() for marking pre-compressed data

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file nodes which were originally produced by program mkzftree.
This commit is contained in:
Thomas Schmitt
2009-04-13 20:51:38 +02:00
parent 9a873ed693
commit 1f2fd259ae
5 changed files with 309 additions and 44 deletions
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27
libisofs/rockridge.c
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@@ -809,6 +809,8 @@ int add_zf_field(Ecma119Image *t, Ecma119Node *n, struct susp_info *info,
IsoStream *stream = NULL, *input_stream, *last_stream, *first_stream;
IsoStream *first_filter = NULL;
IsoFile *file;
void *xipt;
struct zisofs_zf_info *zf;
/* Intimate friendship with this function in filters/zisofs.c */
int ziso_is_zisofs_stream(IsoStream *stream, int *stream_type,
@@ -867,22 +869,19 @@ int add_zf_field(Ecma119Image *t, Ecma119Node *n, struct susp_info *info,
if (ret == 1 && header_size_div4 > 0)
do_zf = 1;
}
#ifdef Libisofs_not_yeT
if (t->zisofs_magic && (flag & 1) && !do_zf) {
if (will_copy) {
stream = last_stream;
} else {
stream = first_stream;
if (!do_zf) {
/* Look for an xinfo mark of a zisofs header */
ret = iso_node_get_xinfo((IsoNode *) file, zisofs_zf_xinfo_func,
&xipt);
if (ret == 1) {
zf = xipt;
header_size_div4 = zf->header_size_div4;
block_size_log2 = zf->block_size_log2;
uncompressed_size = zf->uncompressed_size;
if (header_size_div4 > 0)
do_zf = 1;
}
/* >>> open stream via temporary osiz filter and read 0 bytes.
If no error: do_zf = 1; */;
/* >>> obtain
header_size_div4, block_size_log2, uncompressed_size */;
/* >>> record info for runs with !(flag&1) : as n->node->xinfo */;
}
#endif
if (!do_zf)
return 2;