809f2544ad
Update images dependency and adjust import paths for distro package changes. Signed-off-by: Achilleas Koutsou <achilleas@koutsou.net>
72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
package distroidparser
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import (
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"github.com/osbuild/images/pkg/distro"
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"github.com/osbuild/images/pkg/distro/fedora"
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"github.com/osbuild/images/pkg/distro/rhel/rhel10"
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"github.com/osbuild/images/pkg/distro/rhel/rhel8"
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"github.com/osbuild/images/pkg/distro/rhel/rhel9"
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"github.com/osbuild/images/pkg/distro/rhel7"
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)
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var DefaultParser = NewDefaultParser()
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type ParserFunc func(idStr string) (*distro.ID, error)
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// Parser is a list of distro-specific idStr parsers.
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type Parser struct {
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parsers []ParserFunc
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}
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func New(parsers ...ParserFunc) *Parser {
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return &Parser{parsers: parsers}
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}
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// Parse returns the distro.ID that matches the given distro ID string. If no
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// distro.ID matches the given distro ID string, it returns nil. If multiple
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// distro.IDs match the given distro ID string, it panics.
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// If no distro-specific parser matches the given distro ID string, it falls back
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// to the default parser.
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//
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// The fact that the Parser returns a distro.ID does not mean that the distro is
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// actually supported or implemented. This functionality is provided as an easy
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// and consistent way to parse distro IDs, while allowing distro-specific parsers.
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func (p *Parser) Parse(idStr string) (*distro.ID, error) {
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var match *distro.ID
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for _, f := range p.parsers {
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if d, err := f(idStr); err == nil {
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if match != nil {
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panic("distro ID was matched by multiple parsers")
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}
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match = d
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}
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}
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// Fall back to the default parser
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if match == nil {
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return distro.ParseID(idStr)
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}
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return match, nil
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}
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// Standardize returns the standardized distro ID string for the given distro ID
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// string. If the given distro ID string is not valid, it returns an error.
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func (p *Parser) Standardize(idStr string) (string, error) {
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id, err := p.Parse(idStr)
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if err != nil {
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return "", err
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}
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return id.String(), nil
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}
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func NewDefaultParser() *Parser {
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return New(
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fedora.ParseID,
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rhel7.ParseID,
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rhel8.ParseID,
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rhel9.ParseID,
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rhel10.ParseID,
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)
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}
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