Initial import of xbps with code as August '09.

--HG--
extra : convert_revision : juan%40xbps-20090817170720-amxxac4a2e8bza1j

lib/requiredby.c

@@ -0,0 +1,215 @@
+/*-
+ * 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>
+
+static int
+add_pkg_into_reqby(prop_dictionary_t pkgd, const char *reqname)
+{
+	prop_array_t array;
+	prop_string_t reqstr;
+	bool alloc = false;
+
+	array = prop_dictionary_get(pkgd, "requiredby");
+	if (array == NULL) {
+		alloc = true;
+		array = prop_array_create();
+		if (array == NULL)
+			return ENOMEM;
+	}
+
+	if (xbps_find_string_in_array(array, reqname))
+		return EEXIST;
+
+	reqstr = prop_string_create_cstring(reqname);
+	if (reqstr == NULL) {
+		if (alloc)
+			prop_object_release(array);
+		return errno;
+	}
+
+	if (!xbps_add_obj_to_array(array, reqstr)) {
+		if (alloc)
+			prop_object_release(array);
+
+		prop_object_release(reqstr);
+		return EINVAL;
+	}
+
+	if (!alloc)
+		return 0;
+
+	if (!xbps_add_obj_to_dict(pkgd, array, "requiredby")) {
+		if (alloc)
+			prop_object_release(array);
+
+		return EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+remove_pkg_from_reqby(prop_object_t obj, void *arg, bool *loop_done)
+{
+	prop_array_t array;
+	prop_object_t obj2;
+	prop_object_iterator_t iter;
+	const char *pkgname = arg;
+	char *curpkgname;
+	size_t idx = 0;
+	bool found = false;
+
+	(void)loop_done;
+
+	array = prop_dictionary_get(obj, "requiredby");
+	if (array == NULL || prop_array_count(array) == 0)
+		return 0;
+
+	iter = prop_array_iterator(array);
+	if (iter == NULL)
+		return ENOMEM;
+
+	while ((obj2 = prop_object_iterator_next(iter)) != NULL) {
+		curpkgname =
+		    xbps_get_pkg_name(prop_string_cstring_nocopy(obj2));
+		if (strcmp(curpkgname, pkgname) == 0) {
+			free(curpkgname);
+			found = true;
+			break;
+		}
+		free(curpkgname);
+		idx++;
+	}
+	prop_object_iterator_release(iter);
+	if (found)
+		prop_array_remove(array, idx);
+
+	return 0;
+}
+
+int
+xbps_requiredby_pkg_remove(const char *pkgname)
+{
+	prop_dictionary_t dict;
+	const char *rootdir;
+	char *plist;
+	int rv = 0;
+
+	rootdir = xbps_get_rootdir();
+	plist = xbps_xasprintf("%s/%s/%s", rootdir,
+	    XBPS_META_PATH, XBPS_REGPKGDB);
+	if (plist == NULL)
+		return EINVAL;
+
+	dict = prop_dictionary_internalize_from_file(plist);
+	if (dict == NULL) {
+		free(plist);
+		return errno;
+	}
+
+	rv = xbps_callback_array_iter_in_dict(dict, "packages",
+	    remove_pkg_from_reqby, __UNCONST(pkgname));
+	if (rv == 0) {
+		if (!prop_dictionary_externalize_to_file(dict, plist))
+			rv = errno;
+	}
+
+	prop_object_release(dict);
+	free(plist);
+
+	return rv;
+}
+
+int
+xbps_requiredby_pkg_add(prop_array_t regar, prop_dictionary_t pkg)
+{
+	prop_array_t rdeps;
+	prop_object_t obj, obj2;
+	prop_object_iterator_t iter, iter2;
+	const char *reqname, *pkgname, *version;
+	char *rdepname, *fpkgn;
+	int rv = 0;
+
+	prop_dictionary_get_cstring_nocopy(pkg, "pkgname", &pkgname);
+	prop_dictionary_get_cstring_nocopy(pkg, "version", &version);
+	fpkgn = xbps_xasprintf("%s-%s", pkgname, version);
+	if (fpkgn == NULL)
+		return ENOMEM;
+
+	rdeps = prop_dictionary_get(pkg, "run_depends");
+	if (rdeps == NULL || prop_array_count(rdeps) == 0) {
+		free(fpkgn);
+		return EINVAL;
+	}
+
+	iter = prop_array_iterator(rdeps);
+	if (iter == NULL) {
+		free(fpkgn);
+		return ENOMEM;
+	}
+
+	while ((obj = prop_object_iterator_next(iter)) != NULL) {
+		rdepname = xbps_get_pkg_name(prop_string_cstring_nocopy(obj));
+		iter2 = prop_array_iterator(regar);
+		if (iter2 == NULL) {
+			free(rdepname);
+			rv = ENOMEM;
+			goto out;
+		}
+
+		/*
+		 * Iterate over the array to find the dictionary for the
+		 * current run dependency.
+		 */
+		while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
+			prop_dictionary_get_cstring_nocopy(obj2, "pkgname",
+			    &reqname);
+			if (strcmp(rdepname, reqname) == 0) {
+				rv = add_pkg_into_reqby(obj2, fpkgn);
+				if (rv != 0) {
+					free(rdepname);
+					prop_object_iterator_release(iter2);
+					goto out;
+				}
+				break;
+			}
+		}
+		prop_object_iterator_release(iter2);
+		free(rdepname);
+	}
+
+out:
+	free(fpkgn);
+	prop_object_iterator_release(iter);
+
+	return rv;
+}