mirror of
https://github.com/minio/mc.git
synced 2025-11-12 01:02:26 +03:00
97 lines
2.9 KiB
Go
97 lines
2.9 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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"errors"
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"fmt"
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"io"
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"os"
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"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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"github.com/minio/minio/pkg/iodine"
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)
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func runCatCmd(ctx *cli.Context) {
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if !ctx.Args().Present() || ctx.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(ctx, "cat", 1) // last argument is exit code
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}
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if !isMcConfigExist() {
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console.Fatalln(console.ErrorMessage{
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Message: "Please run \"mc config generate\"",
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Error: iodine.New(errors.New("\"mc\" is not configured"), nil),
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})
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}
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config, err := getMcConfig()
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if err != nil {
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console.Fatalln(console.ErrorMessage{
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Message: fmt.Sprintf("Unable to read config file ‘%s’", mustGetMcConfigPath()),
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Error: iodine.New(err, nil),
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})
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}
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// Convert arguments to URLs: expand alias, fix format...
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urls, err := getExpandedURLs(ctx.Args(), config.Aliases)
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if err != nil {
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console.Fatalln(console.ErrorMessage{
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Message: fmt.Sprintf("Unknown type of URL ‘%s’", urls),
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Error: iodine.New(err, nil),
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})
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}
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sourceURLs := urls
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sourceURLConfigMap, err := getHostConfigs(sourceURLs)
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if err != nil {
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console.Fatalln(console.ErrorMessage{
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Message: fmt.Sprintf("Unable to read host configuration for ‘%s’ from config file ‘%s’", sourceURLs, mustGetMcConfigPath()),
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Error: iodine.New(err, nil),
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})
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}
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humanReadable, err := doCatCmd(sourceURLConfigMap)
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if err != nil {
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console.Fatalln(console.ErrorMessage{
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Message: humanReadable,
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Error: iodine.New(err, nil),
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})
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}
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}
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func doCatCmd(sourceURLConfigMap map[string]*hostConfig) (string, error) {
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for url, config := range sourceURLConfigMap {
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sourceClnt, err := getNewClient(url, config)
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if err != nil {
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return "Unable to create client: " + url, iodine.New(err, nil)
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}
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reader, size, err := sourceClnt.GetObject(0, 0)
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if err != nil {
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return "Unable to retrieve file: " + url, iodine.New(err, nil)
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}
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defer reader.Close()
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_, err = io.CopyN(os.Stdout, reader, int64(size))
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if err != nil {
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switch e := iodine.ToError(err).(type) {
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case *os.PathError:
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return "Reading data to stdout failed, unexpected problem.. please report this error", iodine.New(e, nil)
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default:
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return "Reading data from source failed: " + url, iodine.New(errors.New("Copy data from source failed"), nil)
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}
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}
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}
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return "", nil
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}
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