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Add from pad link to IPFS works. Get from IPFS to file works.

master
arnaucode 6 years ago
commit
dfbae1fd70
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      LICENSE
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      README.md
  4. +80
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      pad2ipfs.go
  5. +56
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      pad2ipfs_test.go

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.gitignore

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addedPads
gettedPads

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LICENSE

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MIT License
Copyright (c) 2018 arnau
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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README.md

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# pad2ipfs [![Go Report Card](https://goreportcard.com/badge/github.com/arnaucode/pad2ipfs)](https://goreportcard.com/report/github.com/arnaucode/pad2ipfs)
Simply Go lang library to get the content from a pad (etherpad) and put into IPFS.
Needs to have installed IPFS (https://ipfs.io), and the daemon running ('> ipfs daemon').
### Install
```
go get github.com/arnaucode/pad2ipfs
```
### Usage
The added pads are stored in 'addedPads' directory.
The getted pads are stored in 'gettedPads' directory.
##### - Add
Adds the content from a pad to IPFS
```go
hash, err := pad2ipfs.Add(link, format)
```
```go
hash, err := pad2ipfs.Add("https://board.net/p/selectedpad", "md")
if err!=nil{
fmt.Println(err)
}
```
Supported formats:
- md
- txt
- html
- pdf
- odt
##### - Get
Gets the content from IPFS and stores it into a file
```go
err := pad2ipfs.Get(hash, filename)
```
```go
err := pad2ipfs.Get("QmVyp4JSREK5syLmNRCafkZkhzC7CfvS9qYWKfvfffqK2B", "selectedpad.md")
if err!=nil {
fmt.Println(err)
}
```

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pad2ipfs.go

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package pad2ipfs
import (
"errors"
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
sh "github.com/ipfs/go-ipfs-api"
)
const addedPads = "addedPads"
const gettedPads = "gettedPads"
//Add gets the content from the etherpad specified in the link, and downloads it in the format of the specified extension, and then, puts it into IPFS
func Add(link string, extension string) (string, error) {
if extension != "md" && extension != "txt" && extension != "html" && extension != "pdf" && extension != "odt" {
return "", errors.New("No valid extension")
}
format := extension
if extension == "md" {
format = "markdown"
extension = "md"
}
//create the pads directory
_ = os.Mkdir(addedPads, os.ModePerm)
//get the pad name
linkSplitted := strings.Split(link, "/")
padName := linkSplitted[len(linkSplitted)-1]
completeLink := link + "/export/" + format
//get the content from the url
r, err := http.Get(completeLink)
if err != nil {
fmt.Println(err)
return "", err
}
defer r.Body.Close()
content, err := ioutil.ReadAll(r.Body)
if err != nil {
fmt.Printf("%s", err)
return "", err
}
//save the content into a file
err = ioutil.WriteFile(addedPads+"/"+padName+"."+extension, content, 0644)
if err != nil {
fmt.Println(err)
return "", err
}
//connect to ipfs shell
s := sh.NewShell("localhost:5001")
//save the file into IPFS
ipfsHash, err := s.AddDir(addedPads + "/" + padName + "." + extension)
if err != nil {
fmt.Println(err)
return "", err
}
return ipfsHash, nil
}
//Get gets the content from IPFS for a given hash, and saves it into a file
func Get(hash string, filename string) error {
//create the pads directory
_ = os.Mkdir(gettedPads, os.ModePerm)
//connect to ipfs shell
s := sh.NewShell("localhost:5001")
err := s.Get(hash, gettedPads+"/"+filename)
if err != nil {
fmt.Println(err)
return err
}
return nil
}

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pad2ipfs_test.go

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package pad2ipfs
import (
"fmt"
"testing"
"github.com/fatih/color"
)
const checkIcon = "\xE2\x9C\x94 "
func TestGenerateEmptyMT(t *testing.T) {
hash1, err := Add("http://board.net/p/pad1", "md")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "added file1")
fmt.Print(" IPFS hash:")
color.Blue(hash1)
}
hash2, err := Add("http://board.net/p/pad2", "txt")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "added file2")
fmt.Print(" IPFS hash:")
color.Blue(hash2)
}
hash3, err := Add("http://board.net/p/pad3", "html")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "added file3")
fmt.Print(" IPFS hash:")
color.Blue(hash3)
}
err = Get(hash1, "pad1.md")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "getted file1")
}
err = Get(hash2, "pad2.txt")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "getted file2")
}
err = Get(hash3, "pad3.html")
if err != nil {
t.Errorf(err.Error())
} else {
color.Green(checkIcon + "getted file3")
}
}

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