README and examples progress

Author: mcuadros

README.md

@@ -1,6 +1,6 @@
 # go-git [![GoDoc](https://godoc.org/gopkg.in/src-d/go-git.v4?status.svg)](https://godoc.org/gopkg.in/src-d/go-git.v4) [![Build Status](https://travis-ci.org/src-d/go-git.svg)](https://travis-ci.org/src-d/go-git) [![codecov.io](https://codecov.io/github/src-d/go-git/coverage.svg)](https://codecov.io/github/src-d/go-git) [![codebeat badge](https://codebeat.co/badges/b6cb2f73-9e54-483d-89f9-4b95a911f40c)](https://codebeat.co/projects/github-com-src-d-go-git)
 
-A low level and highly extensible git implementation in **pure Go**. 
+A low level and highly extensible git implementation in **pure Go**.
 
 *go-git* aims to reach the completeness of [libgit2](https://libgit2.github.com/) or [jgit](http://www.eclipse.org/jgit/), nowadays covers the **majority** of the plumbing **read operations** and **some** of the main **write operations**, but lacks the main porcelain operations such as merges.
 
@@ -12,7 +12,7 @@ The master branch represents the `v4` of the library, it is currently under acti
 
 If you are looking for a production ready version, please take a look to the [`v3`](https://github.com/src-d/go-git/tree/v3) which is being used in production at [source{d}](http://sourced.tech) since August 2015 to analyze all GitHub public repositories (i.e. 16M repositories).
 
-We recommend the use of `v4` to develop new projects since it includes much new functionality and provides a more *idiomatic git* API 
+We recommend the use of `v4` to develop new projects since it includes much new functionality and provides a more *idiomatic git* API
 
 Installation
 ------------
@@ -29,7 +29,7 @@ Examples
 
 Cloning a repository and printing the history of HEAD, just like `git log` does
 
-> Please note that the functions `CheckIfError` and `Inf`o used in the examples are from the [examples package](https://github.com/src-d/go-git/blob/master/examples/common.go#L17) just to be used in the examples.
+> Please note that the functions `CheckIfError` and `Info` used in the examples are from the [examples package](https://github.com/src-d/go-git/blob/master/examples/common.go#L17) just to be used in the examples.
 
 
 ```go
@@ -66,21 +66,20 @@ for _, c := range history {
 
 Outputs:
 ```
-commit 2275fa7d0c75d20103f90b0e1616937d5a9fc5e6
-Author: Máximo Cuadros <[email protected]>
-Date:   2015-10-23 00:44:33 +0200 +0200
+commit ded8054fd0c3994453e9c8aacaf48d118d42991e
+Author: Santiago M. Mola <[email protected]>
+Date:   Sat Nov 12 21:18:41 2016 +0100
 
-commit 35b585759cbf29f8ec428ef89da20705d59f99ec
-Author: Carlos Cobo <[email protected]>
-Date:   2015-05-20 15:21:37 +0200 +0200
+    index: ReadFrom/WriteTo returns IndexReadError/IndexWriteError. (#9)
 
-commit 7e3259c191a9de23d88b6077dcb1cd427e925432
-Author: Alberto Cortés <[email protected]>
-Date:   2016-01-21 03:29:57 +0100 +0100
+commit df707095626f384ce2dc1a83b30f9a21d69b9dfc
+Author: Santiago M. Mola <[email protected]>
+Date:   Fri Nov 11 13:23:22 2016 +0100
 
-commit 24b8ae50db91f3909b11304014564bffc6fdee79
-Author: Alberto Cortés <[email protected]>
-Date:   2015-12-11 17:57:10 +0100 +0100
+    readwriter: fix bug when writing index. (#10)
+
+    When using ReadWriter on an existing siva file, absolute offset for
+    index entries was not being calculated correctly.
 ...
 ```
 

examples/README.md

@@ -7,6 +7,7 @@ Here you can find a list of annotated _go-git_ examples:
 - [open](open/main.go) - Opening a existing repository cloned by _git_
 - [clone](clone/main.go) - Cloning a repository
 - [remotes](remotes/main.go) - Working with remotes: adding, removing, etc
+- [progress](progress/main.go) - Priting the progress information from the sideband
 
 ### Advanced
 - [custom_http](custom_http/main.go) - Replacing the HTTP client using a custom one

examples/common_test.go

@@ -18,6 +18,7 @@ var args = map[string][]string{
 	"showcase":    []string{defaultURL},
 	"custom_http": []string{defaultURL},
 	"clone":       []string{defaultURL, tempFolder()},
+	"progress":    []string{defaultURL, tempFolder()},
 	"open":        []string{filepath.Join(cloneRepository(defaultURL, tempFolder()), ".git")},
 }
 

examples/progress/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"os"
+
+	"gopkg.in/src-d/go-git.v4"
+	. "gopkg.in/src-d/go-git.v4/examples"
+)
+
+func main() {
+	CheckArgs("<url>", "<directory>")
+	url := os.Args[1]
+	directory := os.Args[2]
+
+	r, err := git.NewFilesystemRepository(directory)
+	CheckIfError(err)
+
+	// as git does, when you make a clone, pull or some other operations, the
+	// server sends information via the sideband, this information can being
+	// collected provinding a io.Writer to the repository
+	r.Progress = os.Stdout
+
+	// Clone the given repository to the given directory
+	Info("git clone %s %s", url, directory)
+
+	err = r.Clone(&git.CloneOptions{
+		URL:   url,
+		Depth: 1,
+	})
+
+	CheckIfError(err)
+}