experimental libgit2 flake and code

Author: mipmip

flake.lock

@@ -1,6 +1,7 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs";
+    #nixpkgs.url = "github:NixOS/nixpkgs";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";
     utils.url = "github:numtide/flake-utils";
   };
 
@@ -31,7 +32,15 @@
         devShell = pkgs.mkShell {
           buildInputs = with pkgs; [
             gnumake
+            libgit2
+            #openssl zstd libgit2 libssh2
+            pkg-config
           ];
+
+          shellHook = ''
+            export LIBSSH2_SYS_USE_PKG_CONFIG=1
+            export PKG_CONFIG_PATH=${pkgs.libgit2}/lib/pkgconfig/
+          '';
         };
       });
-}
+    }

flake.nix

@@ -24,6 +24,7 @@ require (
 	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/kevinburke/ssh_config v0.0.0-20201106050909-4977a11b4351 // indirect
+	github.com/libgit2/git2go/v34 v34.0.0 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect

go.mod

@@ -140,6 +140,7 @@ github.com/google/pprof v0.0.0-20201023163331-3e6fc7fc9c4c/go.mod h1:kpwsk12EmLe
 github.com/google/pprof v0.0.0-20201203190320-1bf35d6f28c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20201218002935-b9804c9f04c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
+github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510/go.mod h1:pupxD2MaaD3pAXIBCelhxNneeOaAeabZDe5s4K6zSpQ=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
@@ -169,6 +170,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/libgit2/git2go/v34 v34.0.0 h1:UKoUaKLmiCRbOCD3PtUi2hD6hESSXzME/9OUZrGcgu8=
+github.com/libgit2/git2go/v34 v34.0.0/go.mod h1:blVco2jDAw6YTXkErMMqzHLcAjKkwF0aWIRHBqiJkZ0=
 github.com/magiconair/properties v1.8.6 h1:5ibWZ6iY0NctNGWo87LalDlEZ6R41TqbbDamhfG/Qzo=
 github.com/magiconair/properties v1.8.6/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
 github.com/matryer/is v1.2.0 h1:92UTHpy8CDwaJ08GqLDzhhuixiBUUD1p3AU6PHddz4A=
@@ -238,6 +241,7 @@ golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20201203163018-be400aefbc4c/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
@@ -343,6 +347,7 @@ golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -362,6 +367,7 @@ golang.org/x/sys v0.0.0-20200905004654-be1d3432aa8f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -373,6 +379,7 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

go.sum

@@ -0,0 +1,69 @@
+package main
+import (
+  "github.com/urfave/cli/v2"
+
+  "github.com/libgit2/git2go/v34"
+)
+
+func cmdGit2test() *cli.Command {
+
+  return &cli.Command{
+    Name:  "git2test",
+    Usage: "show logs from remote",
+    Flags: []cli.Flag{
+      &cli.StringFlag{
+        Name:    "ssh-key",
+        Aliases: []string{"i"},
+        Usage:   "alternative ssh-key from `FILE`",
+      },
+      &cli.BoolFlag{
+        Name: "insecure",
+        Aliases: []string{"s"},
+        Usage:   "skip host key validation",
+      },
+    },
+    Action: func(c *cli.Context) error {
+
+
+      repo, err := git.OpenRepository(".")
+      if err != nil {
+        return err
+      }
+      defer repo.Free()
+
+      headRef, err := repo.Head()
+      if err != nil {
+        return err
+      }
+      defer headRef.Free()
+
+      revWalk, err := repo.Walk()
+      if err != nil {
+        return err
+      }
+      defer revWalk.Free()
+
+      if err := revWalk.Push(headRef.Target()); err != nil {
+        return err
+      }
+
+      revWalk.Sorting(git.SortTime)
+
+      count := 0
+      if err := revWalk.Iterate(func(commit *git.Commit) bool {
+        defer commit.Free()
+        count++
+        Git2GoCommitRevWalk = commit
+        return true
+      }); err != nil {
+        return err
+      }
+
+      return nil
+
+    },
+
+  }
+}
+
+

src/cmd_git2test.go

@@ -0,0 +1,76 @@
+package main
+import (
+  "fmt"
+  "os"
+  "time"
+  "github.com/urfave/cli/v2"
+  "github.com/go-git/go-git/v5"
+
+  "github.com/go-git/go-git/v5/plumbing/object"
+  "github.com/go-git/go-git/v5/storage/memory"
+)
+
+func cmdLog() *cli.Command {
+
+  return &cli.Command{
+    Name:  "log",
+    Usage: "show logs from remote",
+    Flags: []cli.Flag{
+      &cli.StringFlag{
+        Name:    "ssh-key",
+        Aliases: []string{"i"},
+        Usage:   "alternative ssh-key from `FILE`",
+      },
+      &cli.BoolFlag{
+        Name: "insecure",
+        Aliases: []string{"s"},
+        Usage:   "skip host key validation",
+      },
+    },
+    Action: func(c *cli.Context) error {
+
+
+      url := c.Args().Get(0)
+      directory := c.Args().Get(1)
+      auth := setAuth(c.String("ssh-key"), c.Bool("insecure"))
+      //branch := c.String("branch")
+
+      Info("git log %s %s", url, directory)
+
+      r, err := git.Clone(memory.NewStorage(), nil, &git.CloneOptions{
+        URL:      url,
+        Progress: os.Stdout,
+        Auth:     auth,
+      })
+
+      CheckIfError(err)
+
+
+      // Gets the HEAD history from HEAD, just like this command:
+      Info("git log")
+
+      // ... retrieves the branch pointed by HEAD
+      ref, err := r.Head()
+      CheckIfError(err)
+
+      // ... retrieves the commit history
+      since := time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
+      until := time.Date(2019, 7, 30, 0, 0, 0, 0, time.UTC)
+      cIter, err := r.Log(&git.LogOptions{From: ref.Hash(), Since: &since, Until: &until})
+      CheckIfError(err)
+
+      // ... just iterates over the commits, printing it
+      err = cIter.ForEach(func(c *object.Commit) error {
+        fmt.Println(c)
+
+        return nil
+      })
+      CheckIfError(err)
+
+      return nil
+    },
+
+  }
+}
+
+