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database.go
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database.go
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package alpm
// #include <alpm.h>
import "C"
import (
"unsafe"
)
type Database struct {
ref *C.alpm_db_t
handle *Handle
}
func NewDatabase(handle *Handle) (*Database, error) {
database := C.alpm_get_localdb(handle.Ref())
if database == nil {
err := C.alpm_errno(handle.Ref())
return nil, NewError(err)
}
return &Database{
ref: database,
handle: handle,
}, nil
}
// alpm_list_t
type list struct {
Data unsafe.Pointer
Prev *list
Next *list
}
// alpm_pkg_t
type Package struct {
ref *C.alpm_pkg_t
}
type PackageFrom int
const (
PKG_SKIP PackageFrom = iota
PKG_FROM_FILE
PKG_FROM_LOCALDB
PKG_FROM_SYNCDB
)
func (p *Package) FileName() string {
return C.GoString(C.alpm_pkg_get_filename(p.ref))
}
func (p *Package) Base() string {
return C.GoString(C.alpm_pkg_get_base(p.ref))
}
func (p *Package) Name() string {
return C.GoString(C.alpm_pkg_get_name(p.ref))
}
func (p *Package) Version() string {
return C.GoString(C.alpm_pkg_get_version(p.ref))
}
func (p *Package) Origin() PackageFrom {
return PackageFrom(C.alpm_pkg_get_origin(p.ref))
}
func (p *Package) Desc() string {
return C.GoString(C.alpm_pkg_get_desc(p.ref))
}
func (p *Package) URL() string {
return C.GoString(C.alpm_pkg_get_url(p.ref))
}
func (d *Database) packageList() (*list, error) {
packageCache := C.alpm_db_get_pkgcache(d.ref)
if packageCache == nil {
err := C.alpm_errno(d.handle.Ref())
return nil, NewError(err)
}
return (*list)(unsafe.Pointer(packageCache)), nil
}
func (d *Database) Packages() ([]Package, error) {
packageList, err := d.packageList()
if err != nil {
return nil, err
}
packages := []Package{}
for packageList != nil {
var packageRef *C.alpm_pkg_t
packageRef = (*C.alpm_pkg_t)(packageList.Data)
packages = append(packages, Package{
ref: packageRef,
})
packageList = packageList.Next
}
return packages, nil
}