Convert '-U pkg1 pkg2' codepath to parallel download

Installing remote packages using its URL is an interesting case for ALPM
API. Unlike package sync ('pacman -S pkg1 pkg2') '-U' does not deal with
server mirror list. Thus _alpm_multi_download() should be able to
handle file download for payloads that either have 'fileurl' field
or pair of fields ('servers' and 'filepath') set.

Signature for alpm_fetch_pkgurl() has changed and it accepts an
output list that is populated with filepaths to fetched packages.

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/libalpm/dload.h b/lib/libalpm/dload.h
index 1e4af755..b9ef9c99 100644
--- a/lib/libalpm/dload.h
+++ b/lib/libalpm/dload.h
@@ -30,6 +30,11 @@ struct dload_payload {
 	char *tempfile_name;
 	char *destfile_name;
 	char *content_disp_name;
+	/* client has to provide either
+	 *  1) fileurl - full URL to the file
+	 *  2) pair of (servers, filepath), in this case ALPM iterates over the
+	 *     server list and tries to download "$server/$filepath"
+	 */
 	char *fileurl;
 	char *filepath; /* download URL path */
 	alpm_list_t *servers;