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lang: core: os: Add expand_home function
Simple helper that works with ~/foo/ or ~james/foo/ type patterns.
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// Mgmt | ||
// Copyright (C) 2013-2024+ James Shubin and the project contributors | ||
// Written by James Shubin <[email protected]> and the project contributors | ||
// | ||
// This program is free software: you can redistribute it and/or modify | ||
// it under the terms of the GNU General Public License as published by | ||
// the Free Software Foundation, either version 3 of the License, or | ||
// (at your option) any later version. | ||
// | ||
// This program is distributed in the hope that it will be useful, | ||
// but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
// GNU General Public License for more details. | ||
// | ||
// You should have received a copy of the GNU General Public License | ||
// along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
// | ||
// Additional permission under GNU GPL version 3 section 7 | ||
// | ||
// If you modify this program, or any covered work, by linking or combining it | ||
// with embedded mcl code and modules (and that the embedded mcl code and | ||
// modules which link with this program, contain a copy of their source code in | ||
// the authoritative form) containing parts covered by the terms of any other | ||
// license, the licensors of this program grant you additional permission to | ||
// convey the resulting work. Furthermore, the licensors of this program grant | ||
// the original author, James Shubin, additional permission to update this | ||
// additional permission if he deems it necessary to achieve the goals of this | ||
// additional permission. | ||
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package coreos | ||
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import ( | ||
"context" | ||
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"github.com/purpleidea/mgmt/lang/funcs/simple" | ||
"github.com/purpleidea/mgmt/lang/types" | ||
"github.com/purpleidea/mgmt/util" | ||
) | ||
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func init() { | ||
simple.ModuleRegister(ModuleName, "expand_home", &simple.Scaffold{ | ||
T: types.NewType("func(str) str"), | ||
F: ExpandHome, | ||
}) | ||
} | ||
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// ExpandHome expands any tilde patterns in the input path according to the | ||
// currently running user. While most of the time its likely this is `root`, | ||
// there is no reason the program is necessarily running as root! | ||
func ExpandHome(ctx context.Context, input []types.Value) (types.Value, error) { | ||
expanded, err := util.ExpandHome(input[0].Str()) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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return &types.StrValue{ | ||
V: expanded, | ||
}, nil | ||
} |