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-rw-r--r--lib/libalpm/be_files.c247
1 files changed, 245 insertions, 2 deletions
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index c0298049..e8573947 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -1,8 +1,8 @@
/*
* be_files.c
*
- * Copyright (c) 2006 by Christian Hamar <krics@linuxforum.hu>
- * Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
+ * Copyright (c) 2006-2010 Pacman Development Team <pacman-dev@archlinux.org>
+ * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -51,6 +51,247 @@
#include "dload.h"
+#define LAZY_LOAD(info, errret) \
+ do { \
+ ALPM_LOG_FUNC; \
+ ASSERT(handle != NULL, return(errret)); \
+ ASSERT(pkg != NULL, return(errret)); \
+ if(pkg->origin != PKG_FROM_FILE && !(pkg->infolevel & info)) { \
+ _alpm_db_read(pkg->origin_data.db, pkg, info); \
+ } \
+ } while(0)
+
+
+/* Cache-specific accessor functions. These implementations allow for lazy
+ * loading by the files backend when a data member is actually needed
+ * rather than loading all pieces of information when the package is first
+ * initialized.
+ */
+
+const char *_cache_get_filename(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->filename;
+}
+
+const char *_cache_get_name(pmpkg_t *pkg)
+{
+ ASSERT(pkg != NULL, return(NULL));
+ return pkg->name;
+}
+
+static const char *_cache_get_version(pmpkg_t *pkg)
+{
+ ASSERT(pkg != NULL, return(NULL));
+ return pkg->version;
+}
+
+static const char *_cache_get_desc(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->desc;
+}
+
+const char *_cache_get_url(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->url;
+}
+
+time_t _cache_get_builddate(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, 0);
+ return pkg->builddate;
+}
+
+time_t _cache_get_installdate(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, 0);
+ return pkg->installdate;
+}
+
+const char *_cache_get_packager(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->packager;
+}
+
+const char *_cache_get_md5sum(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->md5sum;
+}
+
+const char *_cache_get_arch(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->arch;
+}
+
+off_t _cache_get_size(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, -1);
+ return pkg->size;
+}
+
+off_t _cache_get_isize(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, -1);
+ return pkg->isize;
+}
+
+pmpkgreason_t _cache_get_reason(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, -1);
+ return pkg->reason;
+}
+
+alpm_list_t *_cache_get_licenses(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->licenses;
+}
+
+alpm_list_t *_cache_get_groups(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->groups;
+}
+
+int _cache_has_force(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, -1);
+ return pkg->force;
+}
+
+alpm_list_t *_cache_get_depends(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DEPENDS, NULL);
+ return pkg->depends;
+}
+
+alpm_list_t *_cache_get_optdepends(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DEPENDS, NULL);
+ return pkg->optdepends;
+}
+
+alpm_list_t *_cache_get_conflicts(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DEPENDS, NULL);
+ return pkg->conflicts;
+}
+
+alpm_list_t *_cache_get_provides(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DEPENDS, NULL);
+ return pkg->provides;
+}
+
+alpm_list_t *_cache_get_replaces(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DESC, NULL);
+ return pkg->replaces;
+}
+
+alpm_list_t *_cache_get_deltas(pmpkg_t *pkg)
+{
+ LAZY_LOAD(INFRQ_DELTAS, NULL);
+ return pkg->deltas;
+}
+
+alpm_list_t *_cache_get_files(pmpkg_t *pkg)
+{
+ ALPM_LOG_FUNC;
+
+ /* Sanity checks */
+ ASSERT(handle != NULL, return(NULL));
+ ASSERT(pkg != NULL, return(NULL));
+
+ if(pkg->origin == PKG_FROM_LOCALDB
+ && !(pkg->infolevel & INFRQ_FILES)) {
+ _alpm_db_read(pkg->origin_data.db, pkg, INFRQ_FILES);
+ }
+ return pkg->files;
+}
+
+alpm_list_t *_cache_get_backup(pmpkg_t *pkg)
+{
+ ALPM_LOG_FUNC;
+
+ /* Sanity checks */
+ ASSERT(handle != NULL, return(NULL));
+ ASSERT(pkg != NULL, return(NULL));
+
+ if(pkg->origin == PKG_FROM_LOCALDB
+ && !(pkg->infolevel & INFRQ_FILES)) {
+ _alpm_db_read(pkg->origin_data.db, pkg, INFRQ_FILES);
+ }
+ return pkg->backup;
+}
+
+/** The sync database operations struct. Get package fields through
+ * lazy accessor methods that handle any backend loading and caching
+ * logic.
+ */
+static struct pkg_operations sync_pkg_ops = {
+ .get_filename = _cache_get_filename,
+ .get_name = _cache_get_name,
+ .get_version = _cache_get_version,
+ .get_desc = _cache_get_desc,
+ .get_url = _cache_get_url,
+ .get_builddate = _cache_get_builddate,
+ .get_installdate = _cache_get_installdate,
+ .get_packager = _cache_get_packager,
+ .get_md5sum = _cache_get_md5sum,
+ .get_arch = _cache_get_arch,
+ .get_size = _cache_get_size,
+ .get_isize = _cache_get_isize,
+ .get_reason = _cache_get_reason,
+ .has_force = _cache_has_force,
+ .get_licenses = _cache_get_licenses,
+ .get_groups = _cache_get_groups,
+ .get_depends = _cache_get_depends,
+ .get_optdepends = _cache_get_optdepends,
+ .get_conflicts = _cache_get_conflicts,
+ .get_provides = _cache_get_provides,
+ .get_replaces = _cache_get_replaces,
+ .get_deltas = _cache_get_deltas,
+ .get_files = _cache_get_files,
+ .get_backup = _cache_get_backup,
+};
+
+/** The local database operations struct. Get package fields through
+ * lazy accessor methods that handle any backend loading and caching
+ * logic.
+ */
+static struct pkg_operations local_pkg_ops = {
+ .get_filename = _cache_get_filename,
+ .get_name = _cache_get_name,
+ .get_version = _cache_get_version,
+ .get_desc = _cache_get_desc,
+ .get_url = _cache_get_url,
+ .get_builddate = _cache_get_builddate,
+ .get_installdate = _cache_get_installdate,
+ .get_packager = _cache_get_packager,
+ .get_md5sum = _cache_get_md5sum,
+ .get_arch = _cache_get_arch,
+ .get_size = _cache_get_size,
+ .get_isize = _cache_get_isize,
+ .get_reason = _cache_get_reason,
+ .has_force = _cache_has_force,
+ .get_licenses = _cache_get_licenses,
+ .get_groups = _cache_get_groups,
+ .get_depends = _cache_get_depends,
+ .get_optdepends = _cache_get_optdepends,
+ .get_conflicts = _cache_get_conflicts,
+ .get_provides = _cache_get_provides,
+ .get_replaces = _cache_get_replaces,
+ .get_deltas = _cache_get_deltas,
+ .get_files = _cache_get_files,
+ .get_backup = _cache_get_backup,
+};
+
static int checkdbdir(pmdb_t *db)
{
struct stat buf;
@@ -417,8 +658,10 @@ int _alpm_db_populate(pmdb_t *db)
}
if(db == handle->db_local) {
pkg->origin = PKG_FROM_LOCALDB;
+ pkg->ops = &local_pkg_ops;
} else {
pkg->origin = PKG_FROM_SYNCDB;
+ pkg->ops = &sync_pkg_ops;
}
pkg->origin_data.db = db;
/* add to the collection */