github.com/jdhenke/godel@v0.0.0-20161213181855-abeb3861bf0d/apps/distgo/cmd/global.go (about) 1 // Copyright 2016 Palantir Technologies, Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package cmd 16 17 import ( 18 "fmt" 19 "strings" 20 21 "github.com/palantir/pkg/cli/flag" 22 23 "github.com/palantir/godel/apps/distgo/pkg/osarch" 24 ) 25 26 const ( 27 ProductsParamName = "products" 28 OSArchFlagName = "os-arch" 29 ) 30 31 var ( 32 ProductsParam = flag.StringSlice{ 33 Name: ProductsParamName, 34 Usage: "Products for which action should be performed", 35 Optional: true, 36 } 37 OSArchFlag = flag.StringFlag{ 38 Name: OSArchFlagName, 39 Usage: "GOOS-GOARCH for the command (comma-separate for multiple values)", 40 } 41 ) 42 43 type OSArchFilter []osarch.OSArch 44 45 // Matches returns true if the provided osArch is in the filter list or if the filter list is empty. 46 func (f OSArchFilter) Matches(osArch osarch.OSArch) bool { 47 if len(f) == 0 { 48 return true 49 } 50 for _, curr := range f { 51 if curr == osArch { 52 return true 53 } 54 } 55 return false 56 } 57 58 func NewOSArchFilter(osArchs string) (OSArchFilter, error) { 59 if osArchs == "" { 60 return nil, nil 61 } 62 63 var filterArchs []osarch.OSArch 64 var invalidValues []string 65 // if value was provided for flag, parse 66 for _, osArchStr := range strings.Split(osArchs, ",") { 67 if osArch, err := osarch.New(osArchStr); err == nil { 68 filterArchs = append(filterArchs, osArch) 69 } else { 70 invalidValues = append(invalidValues, osArchStr) 71 } 72 } 73 if len(invalidValues) > 0 { 74 return nil, fmt.Errorf("invalid os-arch values: %v", invalidValues) 75 } 76 77 return OSArchFilter(filterArchs), nil 78 }