refactored logic from init_users() into mch_get_usernames()

1 files changed, 57 insertions, 0 deletions

diff --git a/src/os/users.c b/src/os/users.c
new file mode 100644
index 0000000000..b392118f1b
--- /dev/null
+++ b/src/os/users.c
@@ -0,0 +1,57 @@
+/* vi:set ts=2 sts=2 sw=2:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * users.c -- operating system user information
+ */
+
+#include <uv.h>
+
+#include "os.h"
+#include "../garray.h"
+#include "../misc2.h"
+#ifdef HAVE_PWD_H
+# include <pwd.h>
+#endif
+
+/*
+ * Initialize users garray and fill it with os usernames.
+ * Return Ok for success, FAIL for failure.
+ */
+int mch_get_usernames(garray_T *users)
+{
+  if (users == NULL) {
+    return FALSE;
+  }
+  ga_init2(users, sizeof(char *), 20);
+
+# if defined(HAVE_GETPWENT) && defined(HAVE_PWD_H)
+  char *user;
+  struct passwd *pw;
+
+  setpwent();
+  while ((pw = getpwent()) != NULL) {
+    /* pw->pw_name shouldn't be NULL but just in case... */
+    if (pw->pw_name != NULL) {
+      if (ga_grow(users, 1) == FAIL) {
+        return FAIL;
+      }
+      user = (char *)vim_strsave((char_u*)pw->pw_name);
+      if (user == NULL) {
+        return FAIL;
+      }
+      ((char **)(users->ga_data))[users->ga_len++] = user;
+    }
+  }
+  endpwent();
+# endif
+
+  return OK;
+}
+