xbps-bin: add two new targets 'show-deps' and 'show-revdeps" to print

dependencies and reverse dependencies of a package, respectively.

'xbps-bin show' no longer prints the deps anymore.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20090821231219-n26o21xcxor46nk1

bin/xbps-bin/show-deps.c

@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 2009 Juan Romero Pardines.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <xbps_api.h>
+#include "../xbps-repo/util.h"
+#include "defs.h"
+
+static int
+list_deps(prop_object_t obj, void *arg, bool *loop_done)
+{
+	char *pkgname;
+	const char *version;
+
+	(void)arg;
+	(void)loop_done;
+
+	assert(prop_object_type(obj) == PROP_TYPE_STRING);
+
+	pkgname = xbps_get_pkg_name(prop_string_cstring_nocopy(obj));
+	version = xbps_get_pkg_version(prop_string_cstring_nocopy(obj));
+	if (strcmp(version, "0") == 0)
+		printf("%s\n", pkgname);
+	else
+		printf("%s >= %s\n", pkgname, version);
+
+	free(pkgname);
+	
+	return 0;
+}
+
+int
+xbps_show_pkg_deps(const char *pkgname)
+{
+	prop_dictionary_t pkgd, propsd;
+	const char *rootdir;
+	char *path;
+	int rv = 0;
+
+	assert(pkgname != NULL);
+
+	rootdir = xbps_get_rootdir();
+	pkgd = xbps_find_pkg_installed_from_plist(pkgname);
+	if (pkgd == NULL) {
+		printf("Package %s is not installed.\n", pkgname);
+		return 0;
+	}
+
+	/*
+	 * Check for props.plist metadata file.
+	 */
+	path = xbps_xasprintf("%s/%s/metadata/%s/%s", rootdir,
+	    XBPS_META_PATH, pkgname, XBPS_PKGPROPS);
+	if (path == NULL)
+		return errno;
+
+	propsd = prop_dictionary_internalize_from_file(path);
+	free(path);
+	if (propsd == NULL) {
+		printf("%s: unexistent %s metadata file.\n", pkgname,
+		    XBPS_PKGPROPS);
+		return errno;
+	}
+
+	rv = xbps_callback_array_iter_in_dict(propsd, "run_depends",
+	     list_deps, NULL);
+	xbps_release_regpkgdb_dict();
+
+	return rv;
+}
+
+int
+xbps_show_pkg_reverse_deps(const char *pkgname)
+{
+	prop_dictionary_t pkgd;
+	int rv = 0;
+
+	pkgd = xbps_find_pkg_installed_from_plist(pkgname);
+	if (pkgd == NULL) {
+		printf("Package %s is not installed.\n", pkgname);
+		return 0;
+	}
+
+	rv = xbps_callback_array_iter_in_dict(pkgd, "requiredby",
+	    list_strings_sep_in_array, NULL);
+
+	return rv;
+}