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GFile: Add g_file_peek_path()

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This is a variant of g_file_get_path() which returns a const string to
the caller, rather than transferring ownership.

I've been carrying `gs_file_get_path_cached()` in libgsystem and it
has seen a lot of use in the ostree and flatpak codebases.  There are
probably others too.

I think language bindings like Python/Gjs could also use this to avoid
an extra malloc (i.e. we could transparently replace
`g_file_get_path()` with `g_file_peek_path()`.

(Originally by Colin Walters. Tweaked by Philip Withnall to update to
2.56, change the function name and drop the locking.)

https://bugzilla.gnome.org/show_bug.cgi?id=767976
This commit is contained in:
Colin Walters
2016-06-23 08:42:53 -04:00
committed by Philip Withnall
parent 261cb8ea86
commit 4808a957b5
4 changed files with 109 additions and 3 deletions
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2
gio/gfile.h
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@@ -620,6 +620,8 @@ GLIB_AVAILABLE_IN_ALL
char * g_file_get_basename (GFile *file);
GLIB_AVAILABLE_IN_ALL
char * g_file_get_path (GFile *file);
GLIB_AVAILABLE_IN_2_56
const char * g_file_peek_path (GFile *file);
GLIB_AVAILABLE_IN_ALL
char * g_file_get_uri (GFile *file);
GLIB_AVAILABLE_IN_ALL