101 lines
3.3 KiB
Go
101 lines
3.3 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 coresys
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import (
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"context"
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"os"
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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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func init() {
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simple.ModuleRegister(ModuleName, "getenv", &simple.Scaffold{
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T: types.NewType("func(str) str"),
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F: GetEnv,
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})
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simple.ModuleRegister(ModuleName, "defaultenv", &simple.Scaffold{
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T: types.NewType("func(str, str) str"),
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F: DefaultEnv,
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})
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simple.ModuleRegister(ModuleName, "hasenv", &simple.Scaffold{
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T: types.NewType("func(str) bool"),
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F: HasEnv,
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})
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simple.ModuleRegister(ModuleName, "env", &simple.Scaffold{
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T: types.NewType("func() map{str: str}"),
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F: Env,
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})
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}
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// GetEnv gets environment variable by name or returns empty string if non
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// existing.
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func GetEnv(ctx context.Context, input []types.Value) (types.Value, error) {
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return &types.StrValue{
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V: os.Getenv(input[0].Str()),
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}, nil
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}
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// DefaultEnv gets environment variable by name or returns default if non
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// existing.
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func DefaultEnv(ctx context.Context, input []types.Value) (types.Value, error) {
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value, exists := os.LookupEnv(input[0].Str())
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if !exists {
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value = input[1].Str()
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}
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return &types.StrValue{
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V: value,
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}, nil
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}
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// HasEnv returns true if environment variable exists.
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func HasEnv(ctx context.Context, input []types.Value) (types.Value, error) {
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_, exists := os.LookupEnv(input[0].Str())
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return &types.BoolValue{
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V: exists,
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}, nil
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}
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// Env returns a map of all keys and their values.
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func Env(ctx context.Context, input []types.Value) (types.Value, error) {
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environ := make(map[types.Value]types.Value)
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for _, keyval := range os.Environ() {
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if i := strings.IndexRune(keyval, '='); i != -1 {
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environ[&types.StrValue{V: keyval[:i]}] = &types.StrValue{V: keyval[i+1:]}
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}
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}
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return &types.MapValue{
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T: types.NewType("map{str: str}"),
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V: environ,
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}, nil
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}
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