xbps-{install,query}: added -M --memory-sync option.

This explicitly enables the in memory fetch/store of remote repository
data archives mode, ignoring existing on-disk repodata archives.

This changes the previous behaviour of falling back to this mode if no
on-disk repodata archives were found.

Thanks to @Gottox and @dominikh for comments.

bin/xbps-install/main.c

@@ -52,6 +52,8 @@ usage(bool fail)
 	    "                          overwritten.\n"
 	    " -h --help                Print help usage\n"
 	    " -i --ignore-conf-repos   Ignore repositories defined in xbps.d\n"
+	    " -M --memory-sync         Remote repository data is fetched and stored\n"
+	    "                          in memory, ignoring on-disk repodata archives.\n"
 	    " -n --dry-run             Dry-run mode\n"
 	    " -R,--repository=<url>    Add repository to the top of the list.\n"
 	    "                          This option can be specified multiple times.\n"
@@ -91,7 +93,7 @@ repo_import_key_cb(struct xbps_repo *repo, void *arg _unused, bool *done _unused
 int
 main(int argc, char **argv)
 {
-	const char *shortopts = "AC:c:dfhinR:r:SuVvy";
+	const char *shortopts = "AC:c:dfhiMnR:r:SuVvy";
 	const struct option longopts[] = {
 		{ "automatic", no_argument, NULL, 'A' },
 		{ "config", required_argument, NULL, 'C' },
@@ -100,6 +102,7 @@ main(int argc, char **argv)
 		{ "force", no_argument, NULL, 'f' },
 		{ "help", no_argument, NULL, 'h' },
 		{ "ignore-conf-repos", no_argument, NULL, 'i' },
+		{ "memory-sync", no_argument, NULL, 'M' },
 		{ "dry-run", no_argument, NULL, 'n' },
 		{ "repository", required_argument, NULL, 'R' },
 		{ "rootdir", required_argument, NULL, 'r' },
@@ -149,6 +152,9 @@ main(int argc, char **argv)
 		case 'i':
 			flags |= XBPS_FLAG_IGNORE_CONF_REPOS;
 			break;
+		case 'M':
+			flags |= XBPS_FLAG_REPOS_MEMSYNC;
+			break;
 		case 'n':
 			drun = true;
 			break;

bin/xbps-install/xbps-install.8

@@ -1,4 +1,4 @@
-.Dd November 5, 2014
+.Dd November 27, 2014
 .Dt XBPS-INSTALL 8
 .Sh NAME
 .Nm xbps-install
@@ -86,6 +86,9 @@ Ignore repositories defined in configuration files.
 Only repositories specified in the command line via
 .Ar --repository
 will be used.
+.It Fl M, Fl -memory-sync
+For remote repositories, the data is fetched and stored in memory for the current
+operation. This ignores the existing on-disk repository archives in rootdir.
 .It Fl n, Fl -dry-run
 Dry-run mode. Show what actions would be done but don't do anything.
 .It Fl R, Fl -repository=uri

bin/xbps-query/main.c

@@ -43,6 +43,8 @@ usage(bool fail)
 	    " -d --debug               Debug mode shown to stderr\n"
 	    " -h --help                Print help usage\n"
 	    " -i --ignore-conf-repos   Ignore repositories defined in xbps.d\n"
+	    " -M --memory-sync         Remote repository data is fetched and stored\n"
+	    "                          in memory, ignoring on-disk repodata archives.\n"
 	    " -p --property PROP[,...] Show properties for PKGNAME\n"
 	    " -R --repository          Enable repository mode. This mode explicitly\n"
 	    "                          looks for packages in repositories.\n"
@@ -74,7 +76,7 @@ usage(bool fail)
 int
 main(int argc, char **argv)
 {
-	const char *shortopts = "C:c:df:hHiLlmOo:p:Rr:s:S:VvX:x:";
+	const char *shortopts = "C:c:df:hHiLlMmOo:p:Rr:s:S:VvX:x:";
 	const struct option longopts[] = {
 		{ "config", required_argument, NULL, 'C' },
 		{ "cachedir", required_argument, NULL, 'c' },
@@ -84,6 +86,7 @@ main(int argc, char **argv)
 		{ "list-repos", no_argument, NULL, 'L' },
 		{ "list-pkgs", no_argument, NULL, 'l' },
 		{ "list-hold-pkgs", no_argument, NULL, 'H' },
+		{ "memory-sync", no_argument, NULL, 'M' },
 		{ "list-manual-pkgs", no_argument, NULL, 'm' },
 		{ "list-orphans", no_argument, NULL, 'O' },
 		{ "ownedby", required_argument, NULL, 'o' },
@@ -148,6 +151,9 @@ main(int argc, char **argv)
 		case 'l':
 			list_pkgs = opmode = true;
 			break;
+		case 'M':
+			flags |= XBPS_FLAG_REPOS_MEMSYNC;
+			break;
 		case 'm':
 			list_manual = opmode = true;
 			break;

bin/xbps-query/xbps-query.8

@@ -1,4 +1,4 @@
-.Dd November 21, 2014
+.Dd November 27, 2014
 .Dt XBPS-QUERY 8
 .Sh NAME
 .Nm xbps-query
@@ -70,6 +70,9 @@ Ignore repositories defined in configuration files.
 Only repositories specified in the command line via
 .Ar --repository
 will be used.
+.It Fl M, Fl -memory-sync
+For remote repositories, the data is fetched and stored in memory for the current
+operation. This ignores the existing on-disk repository archives in rootdir.
 .It Fl p, Fl -property Ar PROP[,...]
 Only match this package property.
 Multiple properties can be specified by delimiting them with commas.