64 lines
1.7 KiB
Go
64 lines
1.7 KiB
Go
/*
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* LURE - Linux User REpository
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* Copyright (C) 2023 Arsen Musayelyan
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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 <http://www.gnu.org/licenses/>.
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*/
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package shutils
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import (
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"context"
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"fmt"
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"time"
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"mvdan.cc/sh/v3/interp"
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)
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func InsufficientArgsError(cmd string, exp, got int) error {
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argsWord := "arguments"
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if exp == 1 {
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argsWord = "argument"
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}
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return fmt.Errorf("%s: command requires at least %d %s, got %d", cmd, exp, argsWord, got)
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}
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type ExecFunc func(hc interp.HandlerContext, name string, args []string) error
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type ExecFuncs map[string]ExecFunc
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// ExecHandler returns a new ExecHandlerFunc that falls back to fallback
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// if the command cannot be found in the map. If fallback is nil, the default
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// handler is used.
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func (ef ExecFuncs) ExecHandler(fallback interp.ExecHandlerFunc) interp.ExecHandlerFunc {
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return func(ctx context.Context, args []string) error {
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name := args[0]
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if fn, ok := ef[name]; ok {
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hctx := interp.HandlerCtx(ctx)
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if len(args) > 1 {
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return fn(hctx, args[0], args[1:])
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} else {
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return fn(hctx, args[0], nil)
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}
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}
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if fallback == nil {
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fallback = interp.DefaultExecHandler(2 * time.Second)
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}
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return fallback(ctx, args)
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}
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}
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