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models.go
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models.go
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/* {{{ Copyright (c) Paul R. Tagliamonte <paultag@debian.org>, 2015
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE. }}} */
package dependency // import "github.com/ebikt/go-debian/dependency"
// Possibilities {{{
// Arch models an architecture dependency restriction, commonly used to
// restrict the relation to one some architectures. This is also usually
// used in a string of many possibilities.
type ArchSet struct {
Not bool
Architectures []Arch
}
// VersionRelation models a version restriction on a possibility, such as
// greater than version 1.0, or less than 2.0. The values that are valid
// in the Operator field are defined by section 7.1 of Debian policy.
//
// The relations allowed are <<, <=, =, >= and >> for strictly earlier,
// earlier or equal, exactly equal, later or equal and strictly later,
// respectively.
//
type VersionRelation struct {
Number string
Operator string
}
type Stage struct {
Not bool
Name string
}
type StageSet struct {
Stages []Stage
}
// Possibility models a concrete Possibility that may be satisfied in order
// to satisfy the Dependency Relation. Given the Dependency line:
//
// Depends: foo, bar | baz
//
// All of foo, bar and baz are Possibilities. Possibilities may come with
// further restrictions, such as restrictions on Version, Architecture, or
// Build Stage.
//
type Possibility struct {
Name string
Arch *Arch
Architectures *ArchSet
StageSets []StageSet
Version *VersionRelation
Substvar bool
}
// }}}
// A Relation is a set of Possibilities that must be satisfied. Given the
// Dependency line:
//
// Depends: foo, bar | baz
//
// There are two Relations, one composed of foo, and another composed of
// bar and baz.
type Relation struct {
Possibilities []Possibility
}
// A Dependency is the top level type that models a full Dependency relation.
type Dependency struct {
Relations []Relation
}
func (dep *Dependency) UnmarshalControl(data string) error {
ibuf := input{Index: 0, Data: data}
dep.Relations = []Relation{}
err := parseDependency(&ibuf, dep)
return err
}
func (dep Dependency) MarshalControl() (string, error) {
return dep.String(), nil
}
// vim: foldmethod=marker