xbps-bin: added support for the show target.

--HG--
extra : convert_revision : 24b2d30a94c95b22b1c524203cf578da03314335

bin/xbps-bin/Makefile

@@ -1,7 +1,7 @@
 TOPDIR = ../..
 include $(TOPDIR)/vars.mk
 
-OBJS = main.o
+OBJS = main.o ../xbps-repo/util.o
 BIN = xbps-bin
 
 all: $(BIN)
@@ -18,6 +18,7 @@ clean-bins:
 
 clean-objs:
 	-rm -f *.o
+	-rm -f ../xbps-repo/util.o
 
 install: $(BIN)
 	install -d $(SBINDIR)

bin/xbps-bin/main.c

@@ -33,6 +33,7 @@
 #include <unistd.h>
 
 #include <xbps_api.h>
+#include "../xbps-repo/util.h"
 
 static void	usage(void);
 static void	show_missing_deps(prop_dictionary_t, const char *);
@@ -188,6 +189,16 @@ main(int argc, char **argv)
 			printf("Package %s removed successfully.\n", argv[1]);
 		}
 
+	} else if (strcasecmp(argv[0], "show") == 0) {
+		/* Shows info about an installed binary package. */
+		if (argc != 2)
+			usage();
+
+		rv = show_pkg_info_from_metadir(argv[1]);
+		if (rv != 0) {
+			printf("Package %s not installed\n", argv[1]);
+			exit(EXIT_FAILURE);
+		}
 	} else {
 		usage();
 	}

bin/xbps-repo/util.c

@@ -152,6 +152,41 @@ search_string_in_pkgs(prop_object_t obj, void *arg, bool *loop_done)
 	return 0;
 }
 
+int
+show_pkg_info_from_metadir(const char *pkgname)
+{
+	prop_dictionary_t pkgd;
+	size_t len = 0;
+	char *plist, *path;
+
+	/* XBPS_META_PATH/metadata/<pkgname> + NULL */
+	len = strlen(XBPS_META_PATH) + strlen(pkgname) + 12;
+	path = malloc(len);
+	if (path == NULL)
+		return EINVAL;
+
+	(void)snprintf(path, len, "%s/metadata/%s", XBPS_META_PATH, pkgname);
+
+	plist = xbps_append_full_path(true, path, XBPS_PKGPROPS);
+	if (plist == NULL) {
+		free(path);
+		return EINVAL;
+	}
+	free(path);
+
+	pkgd = prop_dictionary_internalize_from_file(plist);
+	if (pkgd == NULL) {
+		free(plist);
+		return errno;
+	}
+
+	show_pkg_info(pkgd);
+	prop_object_release(pkgd);
+	free(plist);
+
+	return 0;
+}
+
 int
 show_pkg_info_from_repolist(prop_object_t obj, void *arg, bool *loop_done)
 {

bin/xbps-repo/util.h

@@ -23,6 +23,12 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifndef _XBPS_REPO_UTIL_H_
+#define _XBPS_REPO_UTIL_H_
+
 int	search_string_in_pkgs(prop_object_t, void *, bool *);
+int	show_pkg_info_from_metadir(const char *);
 int	show_pkg_info_from_repolist(prop_object_t, void *, bool *);
 int	list_strings_in_array(prop_object_t, void *, bool *);
+
+#endif /* !_XBPS_REPO_UTIL_H_ */

doc/TODO

@@ -25,7 +25,6 @@ xbps-bin:
  * Add support to detect orphaned packages.
  * Add support to check sha256 hashes of all installed files, as well as
    hashes for binary packages before installation happens.
- * Add support to use the show target with no repositories.
  * Add support to install binary packages without any repository.
 
 xbps-repo:

include/xbps_api.h

@@ -47,6 +47,9 @@
 /* Filename of the packages register. */
 #define XBPS_REGPKGDB		"regpkgdb.plist"
 
+/* Filename of the package properties plist file. */
+#define XBPS_PKGPROPS		"props.plist"
+
 #include "cmpver.h"
 #include "fexec.h"
 #include "humanize_number.h"