/
diff-main.go
111 lines (95 loc) · 3.49 KB
/
diff-main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
/*
* Minio Client (C) 2015 Minio, Inc.
*
* 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 main
import (
"strings"
"github.com/fatih/color"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
)
// Compute differences between two files or folders.
var diffCmd = cli.Command{
Name: "diff",
Usage: "Compute differences between two files or folders.",
Description: "NOTE: This command *DOES NOT* check for content similarity, which means objects with same size, but different content will not be spotted.",
Action: mainDiff,
CustomHelpTemplate: `NAME:
mc {{.Name}} - {{.Usage}}
USAGE:
mc {{.Name}} FIRST SECOND
EXAMPLES:
1. Compare foo.ogg on a local filesystem with bar.ogg on Amazon AWS cloud storage.
$ mc {{.Name}} foo.ogg https://s3.amazonaws.com/jukebox/bar.ogg
2. Compare two different folders on a local filesystem.
$ mc {{.Name}} ~/Photos /Media/Backup/Photos
`,
}
func checkDiffSyntax(ctx *cli.Context) {
if len(ctx.Args()) != 2 || ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "diff", 1) // last argument is exit code
}
for _, arg := range ctx.Args() {
if strings.TrimSpace(arg) == "" {
fatalIf(errInvalidArgument().Trace(), "Unable to validate empty argument.")
}
}
if isURLRecursive(ctx.Args().Last()) {
fatalIf(errInvalidArgument().Trace(), "Second argument ‘"+ctx.Args().Last()+"’ cannot be recursive.")
}
}
func setDiffPalette(style string) {
console.SetCustomPalette(map[string]*color.Color{
"DiffMessage": color.New(color.FgGreen, color.Bold),
"DiffOnlyInFirst": color.New(color.FgRed, color.Bold),
"DiffType": color.New(color.FgYellow, color.Bold),
"DiffSize": color.New(color.FgMagenta, color.Bold),
})
if style == "light" {
console.SetCustomPalette(map[string]*color.Color{
"DiffMessage": color.New(color.FgWhite, color.Bold),
"DiffOnlyInFirst": color.New(color.FgWhite, color.Bold),
"DiffType": color.New(color.FgWhite, color.Bold),
"DiffSize": color.New(color.FgWhite, color.Bold),
})
return
}
/// Add more styles here
if style == "nocolor" {
// All coloring options exhausted, setting nocolor safely
console.SetNoColor()
}
}
// mainDiff - is a handler for mc diff command
func mainDiff(ctx *cli.Context) {
checkDiffSyntax(ctx)
setDiffPalette(ctx.GlobalString("colors"))
config := mustGetMcConfig()
firstArg := ctx.Args().First()
secondArg := ctx.Args().Last()
firstURL := getAliasURL(firstArg, config.Aliases)
secondURL := getAliasURL(secondArg, config.Aliases)
newFirstURL := stripRecursiveURL(firstURL)
for diff := range doDiff(newFirstURL, secondURL, isURLRecursive(firstURL)) {
fatalIf(diff.Error.Trace(newFirstURL, secondURL), "Failed to diff ‘"+firstURL+"’ and ‘"+secondURL+"’.")
Prints("%s\n", diff)
}
}
// doDiff - Execute the diff command
func doDiff(firstURL, secondURL string, recursive bool) <-chan DiffMessage {
ch := make(chan DiffMessage, 10000)
go doDiffInRoutine(firstURL, secondURL, recursive, ch)
return ch
}