[libgit2-glib] Update to libgit2 changes

[Garrett Regier <gregier src gnome org>]

commit 553dcc25612e46a3b870b2ac9418ae9e4175ae7f
Author: Garrett Regier <garrettregier gmail com>
Date:   Mon Jun 25 11:33:54 2012 -0700

    Update to libgit2 changes
    
    git_branch_list() was replaced with git_branch_foreach()

 docs/reference/libgit2-glib-1.0-sections.txt |    3 +-
 libgit2-glib/ggit-repository.c               |   43 ++++++++++++-------------
 libgit2-glib/ggit-repository.h               |    4 ++-
 libgit2-glib/ggit-types.h                    |   16 +++++++++
 4 files changed, 42 insertions(+), 24 deletions(-)
---
diff --git a/docs/reference/libgit2-glib-1.0-sections.txt b/docs/reference/libgit2-glib-1.0-sections.txt
index 5f3c64d..042ff8f 100644
--- a/docs/reference/libgit2-glib-1.0-sections.txt
+++ b/docs/reference/libgit2-glib-1.0-sections.txt
@@ -460,7 +460,7 @@ ggit_repository_list_tags
 ggit_repository_create_branch
 ggit_repository_delete_branch
 ggit_repository_move_branch
-ggit_repository_list_branches
+ggit_repository_branches_foreach
 ggit_repository_get_remote
 ggit_repository_add_remote
 ggit_repository_list_remotes
@@ -627,6 +627,7 @@ GgitSortMode
 GgitStatusFlags
 GgitSubmoduleIgnore
 GgitSubmoduleUpdate
+GgitBranchesCallback
 GgitConfigCallback
 GgitConfigMatchCallback
 GgitDiffFileCallback
diff --git a/libgit2-glib/ggit-repository.c b/libgit2-glib/ggit-repository.c
index ce16986..96dd8ca 100644
--- a/libgit2-glib/ggit-repository.c
+++ b/libgit2-glib/ggit-repository.c
@@ -1331,43 +1331,42 @@ ggit_repository_move_branch (GgitRepository   *repository,
 	}
 }
 
+typedef gint (* _GitBranchesCallback) (const gchar  *branch_name,
+                                       git_branch_t  branch_type,
+                                       gpointer      payload);
+
 /**
- * ggit_repository_list_branches:
+ * ggit_repository_branches_foreach:
  * @repository: a #GgitRepository.
  * @branch_type: a GgitBranchType.
+ * @callback: (scope call): a #GgitBranchesCallback.
+ * @user_data: callback user data.
  * @error: a #GError.
  *
- * Fill a list with all the branches in the Repository.
- *
- * Returns: (transfer full) (allow-none): a list with the branches specified by @branch_type.
+ * Foreach branch of type @branch_type the callback @callback is called.
  **/
-gchar **
-ggit_repository_list_branches (GgitRepository  *repository,
-                               GgitBranchType   branch_type,
-                               GError         **error)
+void
+ggit_repository_branches_foreach (GgitRepository        *repository,
+                                  GgitBranchType         branch_type,
+                                  GgitBranchesCallback   callback,
+                                  gpointer               user_data,
+                                  GError               **error)
 {
 	gint ret;
-	git_strarray branch_names;
-	gchar **branches;
 
-	g_return_val_if_fail (GGIT_IS_REPOSITORY (repository), FALSE);
-	g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+	g_return_if_fail (GGIT_IS_REPOSITORY (repository));
+	g_return_if_fail (callback != NULL);
+	g_return_if_fail (error == NULL || *error == NULL);
 
-	ret = git_branch_list (&branch_names,
-	                       _ggit_native_get (repository),
-	                       branch_type);
+	ret = git_branch_foreach (_ggit_native_get (repository),
+	                          branch_type,
+	                          (_GitBranchesCallback) callback,
+	                          user_data);
 
 	if (ret != GIT_OK)
 	{
 		_ggit_error_set (error, ret);
-		branches = NULL;
 	}
-	else
-	{
-		branches = ggit_utils_get_str_array_from_git_strarray (&branch_names);
-	}
-
-	return branches;
 }
 
 /**
diff --git a/libgit2-glib/ggit-repository.h b/libgit2-glib/ggit-repository.h
index da5aa1b..2450048 100644
--- a/libgit2-glib/ggit-repository.h
+++ b/libgit2-glib/ggit-repository.h
@@ -137,8 +137,10 @@ void                ggit_repository_move_branch       (GgitRepository        *re
                                                        GgitCreateFlags        flags,
                                                        GError               **error);
 
-gchar             **ggit_repository_list_branches     (GgitRepository        *repository,
+void                ggit_repository_branches_foreach  (GgitRepository        *repository,
                                                        GgitBranchType         branch_type,
+                                                       GgitBranchesCallback   callback,
+                                                       gpointer               user_data,
                                                        GError               **error);
 
 GgitRemote         *ggit_repository_get_remote        (GgitRepository        *repository,
diff --git a/libgit2-glib/ggit-types.h b/libgit2-glib/ggit-types.h
index be6eba0..a28bf19 100644
--- a/libgit2-glib/ggit-types.h
+++ b/libgit2-glib/ggit-types.h
@@ -516,6 +516,22 @@ typedef enum {
 
 
 /**
+ * GgitBranchesCallback:
+ * @branch_name: the branch name.
+ * @branch_type: a #GgitBranchType.
+ * @user_data: (closure): user-supplied data.
+ *
+ * The type of the callback functions for retrieving the branches
+ * in a #GgitRepository. See ggit_repository_branches_foreach().
+ *
+ * Returns: 0 to go for the next branch or a #GgitError in case there was an error.
+ *
+ */
+typedef gint (* GgitBranchesCallback) (const gchar    *branch_name,
+                                       GgitBranchType  branch_type,
+                                       gpointer        user_data);
+
+/**
  * GgitConfigCallback:
  * @name: the name of the configuration value
  * @value: the value