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db.go
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db.go
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// db.go - Functions for database handling.
//
// Copyright (c) 2013 The go-alpm Authors
//
// MIT Licensed. See LICENSE for details.
package alpm
/*
#include <alpm.h>
*/
import "C"
import (
"unsafe"
)
// DB structure representing a alpm database.
type DB struct {
ptr *C.alpm_db_t
handle Handle
}
// RegisterSyncDB Loads a sync database with given name and signature check level.
func (h *Handle) RegisterSyncDB(dbname string, siglevel SigLevel) (*DB, error) {
cName := C.CString(dbname)
defer C.free(unsafe.Pointer(cName))
db := C.alpm_register_syncdb(h.ptr, cName, C.int(siglevel))
if db == nil {
return nil, h.LastError()
}
return &DB{db, *h}, nil
}
func (db *DB) Unregister() error {
ok := C.alpm_db_unregister(db.ptr)
if ok != 0 {
return db.handle.LastError()
}
return nil
}
func (h *Handle) UnregisterAllSyncDBs() error {
ok := C.alpm_unregister_all_syncdbs(h.ptr)
if ok != 0 {
return h.LastError()
}
return nil
}
// Name returns name of the db
func (db *DB) Name() string {
return C.GoString(C.alpm_db_get_name(db.ptr))
}
// Servers returns host server URL.
func (db *DB) Servers() StringList {
ptr := C.alpm_db_get_servers(db.ptr)
return makeStringList(ptr)
}
// SetServers sets server list to use.
func (db *DB) SetServers(servers StringList) {
C.alpm_db_set_servers(db.ptr, (*C.alpm_list_t)(unsafe.Pointer(servers.List)))
}
// Doesn'twork because this function strdups the server
// AddServers adds a string to the server list.
/*func (db *DB) AddServer(server string) {
Csrv := C.CString(server)
//defer C.free(unsafe.Pointer(Csrv))
C.alpm_db_add_server(db.ptr, Csrv)
}*/
// SetUsage sets the Usage of the database
func (db *DB) SetUsage(usage Usage) {
C.alpm_db_set_usage(db.ptr, C.int(usage))
}
// Name searches a package in db.
func (db *DB) Pkg(name string) (*Package, error) {
cName := C.CString(name)
defer C.free(unsafe.Pointer(cName))
ptr := C.alpm_db_get_pkg(db.ptr, cName)
if ptr == nil {
return nil, db.handle.LastError()
}
return &Package{ptr, db.handle}, nil
}
// PkgCache returns the list of packages of the database
func (db *DB) PkgCache() PackageList {
pkgcache := C.alpm_db_get_pkgcache(db.ptr)
return makePackageList(pkgcache, db.handle)
}
func (db *DB) Search(targets StringList) PackageList {
pkglist := C.alpm_db_search(db.ptr, (*C.alpm_list_t)(unsafe.Pointer(targets.List)))
return makePackageList(pkglist, db.handle)
}