1// Copyright 2019 Google Inc. All rights reserved. 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 15package main 16 17import ( 18 "flag" 19 "fmt" 20 "os" 21 "strings" 22) 23 24var ( 25 whitelists = newMultiString("whitelist", "whitelist patterns in the form <pattern>[:<regex of line to ignore>]") 26 whitelistFiles = newMultiString("whitelist_file", "files containing whitelist definitions") 27 28 filters = newMultiString("filter", "filter patterns to apply to files in target-files.zip before comparing") 29) 30 31func newMultiString(name, usage string) *multiString { 32 var f multiString 33 flag.Var(&f, name, usage) 34 return &f 35} 36 37type multiString []string 38 39func (ms *multiString) String() string { return strings.Join(*ms, ", ") } 40func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil } 41 42func main() { 43 flag.Parse() 44 45 if flag.NArg() != 2 { 46 fmt.Fprintf(os.Stderr, "Error, exactly two arguments are required\n") 47 os.Exit(1) 48 } 49 50 whitelists, err := parseWhitelists(*whitelists, *whitelistFiles) 51 if err != nil { 52 fmt.Fprintf(os.Stderr, "Error parsing whitelists: %v\n", err) 53 os.Exit(1) 54 } 55 56 priZip, err := NewLocalZipArtifact(flag.Arg(0)) 57 if err != nil { 58 fmt.Fprintf(os.Stderr, "Error opening zip file %v: %v\n", flag.Arg(0), err) 59 os.Exit(1) 60 } 61 defer priZip.Close() 62 63 refZip, err := NewLocalZipArtifact(flag.Arg(1)) 64 if err != nil { 65 fmt.Fprintf(os.Stderr, "Error opening zip file %v: %v\n", flag.Arg(1), err) 66 os.Exit(1) 67 } 68 defer refZip.Close() 69 70 diff, err := compareTargetFiles(priZip, refZip, targetFilesPattern, whitelists, *filters) 71 if err != nil { 72 fmt.Fprintf(os.Stderr, "Error comparing zip files: %v\n", err) 73 os.Exit(1) 74 } 75 76 fmt.Print(diff.String()) 77 78 if len(diff.modified) > 0 || len(diff.onlyInA) > 0 || len(diff.onlyInB) > 0 { 79 fmt.Fprintln(os.Stderr, "differences found") 80 os.Exit(1) 81 } 82} 83