krh@248: /*
krh@248:  * Copyright (C) 2008  Kristian Høgsberg <krh@redhat.com>
krh@248:  * Copyright (C) 2008  Red Hat, Inc
krh@248:  *
krh@248:  * This program is free software; you can redistribute it and/or modify
krh@248:  * it under the terms of the GNU General Public License as published by
krh@248:  * the Free Software Foundation; either version 2 of the License, or
krh@248:  * (at your option) any later version.
krh@248:  *
krh@248:  * This program is distributed in the hope that it will be useful,
krh@248:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
krh@248:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
krh@248:  * GNU General Public License for more details.
krh@248:  *
krh@248:  * You should have received a copy of the GNU General Public License along
krh@248:  * with this program; if not, write to the Free Software Foundation, Inc.,
krh@248:  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
krh@248:  */
krh@248: 
krh@248: #define _GNU_SOURCE
krh@248: 
richard@302: #include <stdarg.h>
krh@248: #include <string.h>
richard@301: #include <assert.h>
richard@301: 
krh@248: #include "razor-internal.h"
krh@248: #include "razor.h"
krh@248: 
krh@248: static struct razor_package_iterator *
krh@248: razor_package_iterator_create_with_index(struct razor_set *set,
krh@248: 					 struct list *index)
krh@248: {
krh@248: 	struct razor_package_iterator *pi;
krh@248: 
krh@248: 	pi = zalloc(sizeof *pi);
krh@248: 	pi->set = set;
krh@248: 	pi->index = index;
krh@248: 
krh@248: 	return pi;
krh@248: }
krh@248: 
jbowes@278: static struct razor_package_iterator *
jbowes@278: razor_package_iterator_create_empty(struct razor_set *set)
jbowes@278: {
jbowes@278: 	struct razor_package_iterator *pi;
jbowes@278: 	return zalloc(sizeof *pi);
jbowes@278: }
jbowes@278: 
krh@269: RAZOR_EXPORT struct razor_package_iterator *
krh@248: razor_package_iterator_create(struct razor_set *set)
krh@248: {
krh@248: 	struct razor_package_iterator *pi;
krh@248: 
richard@301: 	assert (set != NULL);
richard@301: 
krh@248: 	pi = zalloc(sizeof *pi);
krh@248: 	pi->set = set;
krh@248: 	pi->end = set->packages.data + set->packages.size;
krh@248: 	pi->package = set->packages.data;
krh@248: 
krh@248: 	return pi;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT void
krh@248: razor_package_iterator_init_for_property(struct razor_package_iterator *pi,
krh@248: 					 struct razor_set *set,
krh@248: 					 struct razor_property *property)
krh@248: {
richard@301: 	assert (pi != NULL);
richard@301: 	assert (set != NULL);
richard@301: 	assert (property != NULL);
richard@301: 
krh@248: 	memset(pi, 0, sizeof *pi);
krh@248: 	pi->set = set;
krh@248: 	pi->index = list_first(&property->packages, &set->package_pool);
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT struct razor_package_iterator *
krh@248: razor_package_iterator_create_for_property(struct razor_set *set,
krh@248: 					   struct razor_property *property)
krh@248: {
krh@248: 	struct list *index;
krh@248: 
richard@301: 	assert (set != NULL);
richard@301: 	assert (property != NULL);
richard@301: 
krh@248: 	index = list_first(&property->packages, &set->package_pool);
krh@248: 	return razor_package_iterator_create_with_index(set, index);
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT struct razor_package_iterator *
krh@248: razor_package_iterator_create_for_file(struct razor_set *set,
krh@248: 				       const char *filename)
krh@248: {
krh@248: 	struct razor_entry *entry;
krh@248: 	struct list *index;
krh@248: 
richard@301: 	assert (set != NULL);
richard@301: 	assert (filename != NULL);
richard@301: 
krh@248: 	entry = razor_set_find_entry(set, set->files.data, filename);
krh@248: 	if (entry == NULL)
jbowes@278: 		return razor_package_iterator_create_empty(set);
krh@248: 
krh@248: 	index = list_first(&entry->packages, &set->package_pool);
krh@248: 	return razor_package_iterator_create_with_index(set, index);
krh@248: }
krh@248: 
richard@302: /**
richard@302:  * razor_package_iterator_next:
richard@302:  * @pi: a %razor_package_iterator
richard@302:  * @package: a %razor_package
richard@302:  *
richard@302:  * Gets the next iteratr along with any vararg data.
krh@308:  * The vararg must be terminated with %RAZOR_DETAIL_LAST.
richard@302:  *
richard@307:  * Example: razor_package_iterator_next (pi, package,
richard@307:  *					 RAZOR_DETAIL_NAME, &name,
richard@307:  *					 RAZOR_DETAIL_LAST);
richard@302:  **/
krh@269: RAZOR_EXPORT int
krh@248: razor_package_iterator_next(struct razor_package_iterator *pi,
richard@302: 			    struct razor_package **package, ...)
krh@248: {
richard@302: 	va_list args;
krh@248: 	int valid;
krh@248: 	struct razor_package *p, *packages;
krh@248: 
richard@301: 	assert (pi != NULL);
richard@301: 
krh@248: 	if (pi->package) {
krh@248: 		p = pi->package++;
krh@248: 		valid = p < pi->end;
krh@248: 	} else if (pi->index) {
krh@248: 		packages = pi->set->packages.data;
krh@248: 		p = &packages[pi->index->data];
krh@248: 		pi->index = list_next(pi->index);
krh@248: 		valid = 1;
krh@248: 	} else
krh@248: 		valid = 0;
krh@248: 
richard@302: 	if (valid == 0) {
krh@248: 		*package = NULL;
richard@302: 		goto out;
krh@248: 	}
krh@248: 
richard@302: 	*package = p;
richard@302: 
richard@302: 	va_start(args, NULL);
richard@302: 	razor_package_get_details_varg (pi->set, p, args);
richard@302: 	va_end (args);
richard@302: out:
krh@248: 	return valid;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT void
krh@248: razor_package_iterator_destroy(struct razor_package_iterator *pi)
krh@248: {
richard@301: 	assert (pi != NULL);
richard@301: 
krh@248: 	if (pi->free_index)
krh@248: 		free(pi->index);
krh@248: 
krh@248: 	free(pi);
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT struct razor_property_iterator *
krh@248: razor_property_iterator_create(struct razor_set *set,
krh@248: 			       struct razor_package *package)
krh@248: {
krh@248: 	struct razor_property_iterator *pi;
krh@248: 
richard@301: 	assert (set != NULL);
richard@301: 
krh@248: 	pi = zalloc(sizeof *pi);
krh@248: 	pi->set = set;
krh@248: 
krh@248: 	if (package) {
krh@248: 		pi->index = list_first(&package->properties,
krh@248: 				       &set->property_pool);
krh@248: 	} else {
krh@248: 		pi->property = set->properties.data;
krh@248: 		pi->end = set->properties.data + set->properties.size;
krh@248: 	}
krh@248: 
krh@248: 	return pi;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT int
krh@248: razor_property_iterator_next(struct razor_property_iterator *pi,
krh@248: 			     struct razor_property **property,
krh@248: 			     const char **name,
krh@248: 			     uint32_t *flags,
krh@248: 			     const char **version)
krh@248: {
krh@248: 	char *pool;
krh@248: 	int valid;
krh@248: 	struct razor_property *p, *properties;
krh@248: 
richard@301: 	assert (pi != NULL);
richard@301: 
krh@248: 	if (pi->property) {
krh@248: 		p = pi->property++;
krh@248: 		valid = p < pi->end;
krh@248: 	} else if (pi->index) {
krh@248: 		properties = pi->set->properties.data;
krh@248: 		p = &properties[pi->index->data];
krh@248: 		pi->index = list_next(pi->index);
krh@248: 		valid = 1;
krh@248: 	} else
krh@248: 		valid = 0;
krh@248: 
krh@248: 	if (valid) {
krh@248: 		pool = pi->set->string_pool.data;
krh@248: 		*property = p;
krh@248: 		*name = &pool[p->name];
krh@248: 		*flags = p->flags;
krh@248: 		*version = &pool[p->version];
krh@248: 	} else {
krh@248: 		*property = NULL;
krh@248: 	}
krh@248: 
krh@248: 	return valid;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT void
krh@248: razor_property_iterator_destroy(struct razor_property_iterator *pi)
krh@248: {
krh@248: 	free(pi);
krh@248: }
krh@248: 
krh@248: struct razor_package_query {
krh@248: 	struct razor_set *set;
krh@248: 	char *vector;
krh@248: 	int count;
krh@248: };
krh@248: 
krh@269: RAZOR_EXPORT struct razor_package_query *
krh@248: razor_package_query_create(struct razor_set *set)
krh@248: {
krh@248: 	struct razor_package_query *pq;
krh@248: 	int count;
krh@248: 
richard@301: 	assert (set != NULL);
richard@301: 
krh@248: 	pq = zalloc(sizeof *pq);
krh@248: 	pq->set = set;
krh@248: 	count = set->packages.size / sizeof(struct razor_package);
krh@248: 	pq->vector = zalloc(count * sizeof(char));
krh@248: 
krh@248: 	return pq;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT void
krh@248: razor_package_query_add_package(struct razor_package_query *pq,
krh@248: 				struct razor_package *p)
krh@248: {
krh@248: 	struct razor_package *packages;
krh@248: 
richard@301: 	assert (pq != NULL);
richard@301: 	assert (p != NULL);
richard@301: 
krh@248: 	packages = pq->set->packages.data;
krh@248: 	pq->count += pq->vector[p - packages] ^ 1;
krh@248: 	pq->vector[p - packages] = 1;
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT void
krh@248: razor_package_query_add_iterator(struct razor_package_query *pq,
krh@248: 				 struct razor_package_iterator *pi)
krh@248: {
krh@248: 	struct razor_package *packages, *p;
krh@248: 
richard@301: 	assert (pq != NULL);
richard@301: 	assert (pi != NULL);
richard@301: 
krh@248: 	packages = pq->set->packages.data;
richard@307: 	while (razor_package_iterator_next(pi, &p, RAZOR_DETAIL_LAST)) {
krh@248: 		pq->count += pq->vector[p - packages] ^ 1;
krh@248: 		pq->vector[p - packages] = 1;
krh@248: 	}
krh@248: }
krh@248: 
krh@269: RAZOR_EXPORT struct razor_package_iterator *
krh@248: razor_package_query_finish(struct razor_package_query *pq)
krh@248: {
krh@248: 	struct razor_package_iterator *pi;
krh@248: 	struct razor_set *set;
krh@248: 	struct list *index;
krh@251: 	int i, j;
krh@248: 
richard@301: 	assert (pq != NULL);
richard@301: 
krh@248: 	set = pq->set;
krh@251: 	if (pq->count > 0)
krh@251: 		index = zalloc(pq->count * sizeof *index);
krh@251: 	else
krh@251: 		index = NULL;
krh@248: 
krh@267: 	for (i = 0, j = 0; j < pq->count; i++) {
krh@248: 		if (!pq->vector[i])
krh@248: 			continue;
krh@248: 
krh@248: 		index[j].data = i;
krh@248: 		if (j == pq->count - 1)
krh@248: 			index[j].flags = 0x80;
krh@248: 		j++;
krh@248: 	}
krh@248: 
krh@251: 	free(pq->vector);
krh@248: 	free(pq);
krh@248: 
krh@248: 	pi = razor_package_iterator_create_with_index(set, index);
krh@248: 	pi->free_index = 1;
krh@248: 
krh@248: 	return pi;
krh@248: }