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36e2c1813d
- String() for colorized output - JSON() for json marshalled output All messages should adhere to this interface unless its explicitly not necessary in some cases.
94 lines
3.0 KiB
Go
94 lines
3.0 KiB
Go
/*
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* Minio Client (C) 2015 Minio, Inc.
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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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*/
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package main
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import (
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"strings"
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"github.com/fatih/color"
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"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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)
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// Compute differences between two files or folders.
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var diffCmd = cli.Command{
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Name: "diff",
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Usage: "Compute differences between two files or folders.",
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Description: "NOTE: This command *DOES NOT* check for content similarity, which means objects with same size, but different content will not be spotted.",
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Action: mainDiff,
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CustomHelpTemplate: `NAME:
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mc {{.Name}} - {{.Usage}}
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USAGE:
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mc {{.Name}} FIRST SECOND
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EXAMPLES:
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1. Compare foo.ogg on a local filesystem with bar.ogg on Amazon AWS cloud storage.
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$ mc {{.Name}} foo.ogg https://s3.amazonaws.com/jukebox/bar.ogg
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2. Compare two different folders on a local filesystem.
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$ mc {{.Name}} ~/Photos /Media/Backup/Photos
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`,
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}
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func checkDiffSyntax(ctx *cli.Context) {
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if len(ctx.Args()) != 2 || ctx.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(ctx, "diff", 1) // last argument is exit code
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}
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for _, arg := range ctx.Args() {
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if strings.TrimSpace(arg) == "" {
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fatalIf(errInvalidArgument().Trace(), "Unable to validate empty argument.")
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}
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}
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if isURLRecursive(ctx.Args().Last()) {
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fatalIf(errInvalidArgument().Trace(), "Second argument ‘"+ctx.Args().Last()+"’ cannot be recursive.")
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}
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}
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// mainDiff - is a handler for mc diff command
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func mainDiff(ctx *cli.Context) {
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checkDiffSyntax(ctx)
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console.SetCustomTheme(map[string]*color.Color{
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"DiffMessage": color.New(color.FgGreen, color.Bold),
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"DiffOnlyInFirst": color.New(color.FgRed, color.Bold),
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"DiffType": color.New(color.FgYellow, color.Bold),
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"DiffSize": color.New(color.FgMagenta, color.Bold),
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})
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config := mustGetMcConfig()
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firstArg := ctx.Args().First()
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secondArg := ctx.Args().Last()
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firstURL := getAliasURL(firstArg, config.Aliases)
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secondURL := getAliasURL(secondArg, config.Aliases)
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newFirstURL := stripRecursiveURL(firstURL)
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for diff := range doDiffCmd(newFirstURL, secondURL, isURLRecursive(firstURL)) {
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fatalIf(diff.Error.Trace(newFirstURL, secondURL), "Failed to diff ‘"+firstURL+"’ and ‘"+secondURL+"’.")
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Prints("%s\n", diff)
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}
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}
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// doDiffCmd - Execute the diff command
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func doDiffCmd(firstURL, secondURL string, recursive bool) <-chan DiffMessage {
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ch := make(chan DiffMessage, 10000)
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go doDiffInRoutine(firstURL, secondURL, recursive, ch)
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return ch
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}
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