98 lines
3.4 KiB
Go
98 lines
3.4 KiB
Go
// Mgmt
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// Copyright (C) 2013-2024+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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package coreos
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import (
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"context"
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"fmt"
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"strings"
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"github.com/purpleidea/mgmt/lang/funcs/simple"
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"github.com/purpleidea/mgmt/lang/types"
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)
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const structDistroUID = "struct{distro str; version str; arch str}"
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var typeParseDistroUID = types.NewType(fmt.Sprintf("func(str) %s", structDistroUID))
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func init() {
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simple.ModuleRegister(ModuleName, "parse_distro_uid", &simple.Scaffold{
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T: typeParseDistroUID,
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F: ParseDistroUID,
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})
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}
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// ParseDistroUID parses a distro UID into its component values. If it cannot
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// parse correctly, all the struct fields have the zero values.
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// NOTE: The UID pattern is subject to change.
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func ParseDistroUID(ctx context.Context, input []types.Value) (types.Value, error) {
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fn := func(distro, version, arch string) (types.Value, error) {
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st := types.NewStruct(types.NewType(structDistroUID))
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if err := st.Set("distro", &types.StrValue{V: distro}); err != nil {
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return nil, err
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}
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if err := st.Set("version", &types.StrValue{V: version}); err != nil {
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return nil, err
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}
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if err := st.Set("arch", &types.StrValue{V: arch}); err != nil {
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return nil, err
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}
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return st, nil
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}
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distro, version, arch, err := parseDistroUID(input[0].Str())
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//if err != nil {
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// return fn("", "", "") // empty
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//}
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_ = err
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return fn(distro, version, arch)
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}
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// parseDistroUID returns distro, version, arch in that order after parsing a
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// string like: fedora39-x86_64 and returning error if it doesn't match.
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// NOTE: The UID pattern is subject to change.
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func parseDistroUID(uid string) (string, string, string, error) {
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before, arch, found := strings.Cut(uid, "-")
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if !found {
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return "", "", "", fmt.Errorf("dash not found")
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}
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distro := strings.TrimRight(before, "0123456789")
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version := before[len(distro):]
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if distro == "" || version == "" || arch == "" {
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return "", "", "", fmt.Errorf("got empty value")
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}
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// TODO: check for valid distro or arch?
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return distro, version, arch, nil
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}
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