forked from cerc-io/plugeth
86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
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// Copyright 2018 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/swarm/api"
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swarm "github.com/ethereum/go-ethereum/swarm/api/client"
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"gopkg.in/urfave/cli.v1"
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)
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func download(ctx *cli.Context) {
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log.Debug("downloading content using swarm down")
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args := ctx.Args()
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dest := "."
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switch len(args) {
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case 0:
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utils.Fatalf("Usage: swarm down [options] <bzz locator> [<destination path>]")
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case 1:
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log.Trace(fmt.Sprintf("swarm down: no destination path - assuming working dir"))
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default:
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log.Trace(fmt.Sprintf("destination path arg: %s", args[1]))
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if absDest, err := filepath.Abs(args[1]); err == nil {
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dest = absDest
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} else {
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utils.Fatalf("could not get download path: %v", err)
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}
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}
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var (
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bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
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isRecursive = ctx.Bool(SwarmRecursiveFlag.Name)
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client = swarm.NewClient(bzzapi)
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)
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if fi, err := os.Stat(dest); err == nil {
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if isRecursive && !fi.Mode().IsDir() {
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utils.Fatalf("destination path is not a directory!")
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}
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} else {
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if !os.IsNotExist(err) {
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utils.Fatalf("could not stat path: %v", err)
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}
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}
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uri, err := api.Parse(args[0])
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if err != nil {
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utils.Fatalf("could not parse uri argument: %v", err)
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}
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// assume behaviour according to --recursive switch
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if isRecursive {
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if err := client.DownloadDirectory(uri.Addr, uri.Path, dest); err != nil {
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utils.Fatalf("encoutered an error while downloading directory: %v", err)
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}
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} else {
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// we are downloading a file
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log.Debug(fmt.Sprintf("downloading file/path from a manifest. hash: %s, path:%s", uri.Addr, uri.Path))
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err := client.DownloadFile(uri.Addr, uri.Path, dest)
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if err != nil {
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utils.Fatalf("could not download %s from given address: %s. error: %v", uri.Path, uri.Addr, err)
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}
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}
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}
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