examples: update examples if repository exists.

This adds a git_update method to the scm lib which we use here
to update the existing examples git repository. This ensures
the developer is always using an up-to-date copy of EFL
examples when creating.

src/lib/edi_create.c

@@ -410,8 +410,7 @@ edi_create_example(const char *example_name, const char *parentdir,
    INF("Extracting example project \"%s\" at path %s\n", example_name, dest);
 
    if (ecore_file_exists(examplepath))
-     ERR("TODO: UPDATE NOT IMPLEMENTED");
-//     status = edi_scm_git_update(examplepath);
+     status = edi_scm_git_update(examplepath);
    else
      status = edi_scm_git_clone(EXAMPLES_GIT_URL, examplepath);
 

src/lib/edi_scm.c

@@ -85,6 +85,23 @@ edi_scm_git_clone(const char *url, const char *dir)
    return code;
 }
 
+EAPI int
+edi_scm_git_update(const char *dir)
+{
+   char *oldpwd;
+   int code;
+
+   oldpwd = getcwd(NULL, PATH_MAX);
+
+   chdir(dir);
+   code = edi_exe_wait("git fetch origin && git reset --hard origin/master");
+   chdir(oldpwd);
+
+   free(oldpwd);
+
+   return code;
+}
+
 static int
 _edi_scm_git_file_stage(const char *path)
 {

src/lib/edi_scm.h

@@ -128,14 +128,25 @@ EAPI int edi_scm_git_new(void);
 /**
  * Clone an existing git repository from the provided url.
  *
- * @param url the URL to clone from.
- * @param dir the new directory that will be created to clone into
+ * @param url The URL to clone from.
+ * @param dir The new directory that will be created to clone into.
  * @return The status code of the clone command.
  *
  * @ingroup Scm
  */
 EAPI int edi_scm_git_clone(const char *url, const char *dir);
 
+/**
+ * Update a local git repository from remote source.
+ *
+ * @param dir The directory to update.
+ *
+ * @return The status code of the update process.
+ *
+ * @ingroup Scm
+ */
+EAPI int edi_scm_git_update(const char *dir);
+
 /**
  * Get a pointer to the SCM engine in use.
  *