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make compute_download_size consider .part files

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Check for the existance of a partial download of a package file before
jumping to delta calculations. Currently, if there were 10MiB remaining
in a 100MiB the values passed to the front end do not reflect this.

Refactored from an old patch originally by Dan.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Dave Reisner 2011-09-07 16:01:43 -04:00 committed by Dan McGee
parent befddfc3e6
commit d8eacae7bc
1 changed files with 24 additions and 3 deletions
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27
lib/libalpm/sync.c
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@ -284,7 +284,8 @@ alpm_list_t SYMEXPORT *alpm_find_group_pkgs(alpm_list_t *dbs,
*/
static int compute_download_size(alpm_pkg_t *newpkg)
{
char *fpath;
const char *fname;
char *fpath, *fnamepart = NULL;
off_t size = 0;
alpm_handle_t *handle = newpkg->handle;
@ -295,11 +296,26 @@ static int compute_download_size(alpm_pkg_t *newpkg)
}
ASSERT(newpkg->filename != NULL, RET_ERR(handle, ALPM_ERR_PKG_INVALID_NAME, -1));
fpath = _alpm_filecache_find(handle, newpkg->filename);
fname = newpkg->filename;
fpath = _alpm_filecache_find(handle, fname);
/* downloaded file exists, so there's nothing to grab */
if(fpath) {
FREE(fpath);
size = 0;
goto finish;
}
CALLOC(fnamepart, strlen(fname) + 6, sizeof(char), return -1);
sprintf(fnamepart, "%s.part", fname);
fpath = _alpm_filecache_find(handle, fnamepart);
if(fpath) {
struct stat st;
if(stat(fpath, &st) == 0) {
/* subtract the size of the .part file */
_alpm_log(handle, ALPM_LOG_DEBUG, "using (package - .part) size\n");
size = newpkg->size - st.st_size;
size = size < 0 ? 0 : size;
}
} else if(handle->usedelta) {
off_t dltsize;
@ -319,11 +335,16 @@ static int compute_download_size(alpm_pkg_t *newpkg)
size = newpkg->size;
}
finish:
_alpm_log(handle, ALPM_LOG_DEBUG, "setting download size %jd for pkg %s\n",
(intmax_t)size, newpkg->name);
newpkg->infolevel |= INFRQ_DSIZE;
newpkg->download_size = size;
FREE(fpath);
FREE(fnamepart);
return 0;
}