forked from paultag/go-debian
/
control.go
157 lines (135 loc) · 4.82 KB
/
control.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 control
import (
"bufio"
"fmt"
"os"
"path/filepath"
"github.com/paultag/go-debian/dependency"
)
// Encapsulation for a debian/control file, which is a series of RFC2822-like
// blocks, starting with a Source control paragraph, and then a series of
// Binary control paragraphs.
//
// The debian/control file contains the most vital (and version-independent)
// information about the source package and about the binary packages it
// creates.
//
// The first paragraph of the control file contains information about the source
// package in general. The subsequent sets each describe a binary package that
// the source tree builds.
type Control struct {
Filename string
Source SourceParagraph
Binaries []BinaryParagraph
}
// Encapsulation for a debian/control Source entry. This contains information
// that will wind up in the .dsc and friends. Really quite fun!
type SourceParagraph struct {
Paragraph
Maintainer string
Uploaders []string `delim:","`
Source string
Priority string
Section string
Description string
BuildDepends dependency.Dependency `control:"Build-Depends"`
BuildDependsIndep dependency.Dependency `control:"Build-Depends-Indep"`
BuildConflicts dependency.Dependency `control:"Build-Conflicts"`
BuildConflictsIndep dependency.Dependency `control:"Build-Conflicts-Indep"`
}
// Return a list of all entities that are responsible for the package's
// well being. The 0th element is always the package's Maintainer,
// with any Uploaders following.
func (s *SourceParagraph) Maintainers() []string {
return append([]string{s.Maintainer}, s.Uploaders...)
}
// Encapsulation for a debian/control Binary control entry. This contains
// information that will be eventually put lovingly into the .deb file
// after it's built on a given Arch.
type BinaryParagraph struct {
Paragraph
Architectures []dependency.Arch `control:"Architecture"`
Package string
Priority string
Section string
Essential bool
Description string
Depends dependency.Dependency
Recommends dependency.Dependency
Suggests dependency.Dependency
Enhances dependency.Dependency
PreDepends dependency.Dependency `control:"Pre-Depends"`
Breaks dependency.Dependency
Conflicts dependency.Dependency
Replaces dependency.Dependency
BuiltUsing dependency.Dependency `control:"Built-Using"`
}
func (para *Paragraph) getDependencyField(field string) (*dependency.Dependency, error) {
if val, ok := para.Values[field]; ok {
return dependency.Parse(val)
}
return nil, fmt.Errorf("Field `%s' Missing", field)
}
func (para *Paragraph) getOptionalDependencyField(field string) dependency.Dependency {
val := para.Values[field]
dep, err := dependency.Parse(val)
if err != nil {
return dependency.Dependency{}
}
return *dep
}
// Given a path on the filesystem, Parse the file off the disk and return
// a pointer to a brand new Control struct, unless error is set to a value
// other than nil.
func ParseControlFile(path string) (ret *Control, err error) {
path, err = filepath.Abs(path)
if err != nil {
return nil, err
}
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
ret, err = ParseControl(bufio.NewReader(f), path)
if err != nil {
return nil, err
}
return ret, nil
}
// Given a bufio.Reader, consume the Reader, and return a Control object
// for use.
func ParseControl(reader *bufio.Reader, path string) (*Control, error) {
ret := Control{
Filename: path,
Binaries: []BinaryParagraph{},
Source: SourceParagraph{},
}
if err := Unmarshal(&ret.Source, reader); err != nil {
return nil, err
}
if err := Unmarshal(&ret.Binaries, reader); err != nil {
return nil, err
}
return &ret, nil
}
// vim: foldmethod=marker