75 lines
2.5 KiB
Go
75 lines
2.5 KiB
Go
// Copyright 2016-2018, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmdutil
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import (
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"github.com/hashicorp/go-multierror"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/util/contract"
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"github.com/spf13/cobra"
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)
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// ArgsFunc wraps a standard cobra argument validator with standard Pulumi error handling.
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func ArgsFunc(argsValidator cobra.PositionalArgs) cobra.PositionalArgs {
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return func(cmd *cobra.Command, args []string) error {
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err := argsValidator(cmd, args)
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if err != nil {
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contract.IgnoreError(cmd.Help())
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Exit(err)
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}
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return nil
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}
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}
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// NoArgs is the same as cobra.NoArgs, except it is wrapped with ArgsFunc to provide standard
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// Pulumi error handling.
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var NoArgs = ArgsFunc(cobra.NoArgs)
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// MaximumNArgs is the same as cobra.MaximumNArgs, except it is wrapped with ArgsFunc to provide standard
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// Pulumi error handling.
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func MaximumNArgs(n int) cobra.PositionalArgs {
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return ArgsFunc(cobra.MaximumNArgs(n))
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}
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// ExactArgs is the same as cobra.ExactArgs, except it is wrapped with ArgsFunc to provide standard
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// Pulumi error handling.
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func ExactArgs(n int) cobra.PositionalArgs {
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return ArgsFunc(cobra.ExactArgs(n))
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}
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// SpecificArgs requires a set of specific arguments. We use the names to improve diagnostics.
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func SpecificArgs(argNames []string) cobra.PositionalArgs {
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return ArgsFunc(func(cmd *cobra.Command, args []string) error {
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if len(args) > len(argNames) {
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return errors.Errorf("too many arguments: got %d, expected %d", len(args), len(argNames))
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} else if len(args) < len(argNames) {
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var result error
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for i := len(args); i < len(argNames); i++ {
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result = multierror.Append(result, errors.Errorf("missing required argument: %s", argNames[i]))
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}
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return result
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} else {
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return nil
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}
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})
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}
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// RangeArgs is the same as cobra.RangeArgs, except it is wrapped with ArgsFunc to provide standard
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// Pulumi error handling.
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func RangeArgs(min int, max int) cobra.PositionalArgs {
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return ArgsFunc(cobra.RangeArgs(min, max))
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}
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