/
diff.go
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/
diff.go
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// Copyright 2018 Microsoft Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"encoding/json"
"fmt"
"github.com/spf13/cobra"
"io/ioutil"
)
var diffCmd = &cobra.Command{
Use: "diff <base export filepath> <target export filepath>",
Short: "Generate a diff report between the two export report files",
Long: `The diff command consumes two JSON files with the export reports, and generates a diff report between them.`,
Args: cobra.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
return diffCommand(args[0], args[1])
},
}
func init() {
rootCmd.AddCommand(diffCmd)
diffCmd.PersistentFlags().BoolVarP(&asMarkdown, "markdown", "m", false, "emits the report in markdown format")
}
func diffCommand(basePath, targetPath string) error {
base, err := ioutil.ReadFile(basePath)
if err != nil {
return fmt.Errorf("failed to read base export file %s: %+v", basePath, err)
}
target, err := ioutil.ReadFile(targetPath)
if err != nil {
return fmt.Errorf("failed to read target export file %s: %+v", targetPath, err)
}
var baseExport, targetExport repoContent
if err := json.Unmarshal(base, &baseExport); err != nil {
return fmt.Errorf("failed to unmarshal base export: %+v", err)
}
if err := json.Unmarshal(target, &targetExport); err != nil {
return fmt.Errorf("failed to unmarshal target export: %+v", err)
}
r := getPkgsReport(baseExport, targetExport)
if asMarkdown {
fmt.Println(r.toMarkdown())
} else {
b, _ := json.Marshal(r)
fmt.Println(string(b))
}
return nil
}