From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Herland Subject: [PATCHv12 04/23] Notes API: init_notes(): Initialize the notes tree from the given notes ref Date: Wed, 27 Jan 2010 12:51:41 +0100 Message-ID: <1264593120-4428-5-git-send-email-johan@herland.net> References: <1264593120-4428-1-git-send-email-johan@herland.net> Mime-Version: 1.0 Content-Type: TEXT/PLAIN Content-Transfer-Encoding: 7BIT Cc: git@vger.kernel.org, johan@herland.net To: gitster@pobox.com X-From: git-owner@vger.kernel.org Wed Jan 27 12:54:25 2010 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by lo.gmane.org with esmtp (Exim 4.50) id 1Na6TU-0000ze-MD for gcvg-git-2@lo.gmane.org; Wed, 27 Jan 2010 12:54:21 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753847Ab0A0Lxe (ORCPT ); Wed, 27 Jan 2010 06:53:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753832Ab0A0Lxb (ORCPT ); Wed, 27 Jan 2010 06:53:31 -0500 Received: from smtp.getmail.no ([84.208.15.66]:52693 "EHLO get-mta-out02.get.basefarm.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752890Ab0A0LwV (ORCPT ); Wed, 27 Jan 2010 06:52:21 -0500 Received: from smtp.getmail.no ([10.5.16.4]) by get-mta-out02.get.basefarm.net (Sun Java(tm) System Messaging Server 7.0-0.04 64bit (built Jun 20 2008)) with ESMTP id <0KWW00JBUMB72M00@get-mta-out02.get.basefarm.net> for git@vger.kernel.org; Wed, 27 Jan 2010 12:52:19 +0100 (MET) Received: from localhost.localdomain ([84.215.68.234]) by get-mta-in01.get.basefarm.net (Sun Java(tm) System Messaging Server 7.0-0.04 64bit (built Jun 20 2008)) with ESMTP id <0KWW00EZ7MAZN340@get-mta-in01.get.basefarm.net> for git@vger.kernel.org; Wed, 27 Jan 2010 12:52:19 +0100 (MET) X-PMX-Version: 5.5.3.366731, Antispam-Engine: 2.7.0.366912, Antispam-Data: 2010.1.27.113919 X-Mailer: git-send-email 1.6.6.405.g80ed6 In-reply-to: <1264593120-4428-1-git-send-email-johan@herland.net> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Created by a simple refactoring of initialize_notes(). Also add a new 'flags' parameter, which is a bitwise combination of notes initialization flags. For now, there is only one flag - NOTES_INIT_EMPTY - which indicates that the notes tree should not auto-load the contents of the given (or default) notes ref, but rather should leave the notes tree initialized to an empty state. This will become useful in the future when manipulating the notes tree through the notes API. Signed-off-by: Johan Herland --- notes.c | 30 ++++++++++++++++++------------ notes.h | 20 ++++++++++++++++++++ 2 files changed, 38 insertions(+), 12 deletions(-) diff --git a/notes.c b/notes.c index 4ee4fec..3f4ae35 100644 --- a/notes.c +++ b/notes.c @@ -340,15 +340,28 @@ static void load_subtree(struct leaf_node *subtree, struct int_node *node, free(buf); } -static void initialize_notes(const char *notes_ref_name) +void init_notes(const char *notes_ref, int flags) { unsigned char sha1[20], object_sha1[20]; unsigned mode; struct leaf_node root_tree; - if (!notes_ref_name || read_ref(notes_ref_name, object_sha1) || - get_tree_entry(object_sha1, "", sha1, &mode)) + assert(!initialized); + initialized = 1; + + if (!notes_ref) + notes_ref = getenv(GIT_NOTES_REF_ENVIRONMENT); + if (!notes_ref) + notes_ref = notes_ref_name; /* value of core.notesRef config */ + if (!notes_ref) + notes_ref = GIT_NOTES_DEFAULT_REF; + + if (flags & NOTES_INIT_EMPTY || !notes_ref || + read_ref(notes_ref, object_sha1)) return; + if (get_tree_entry(object_sha1, "", sha1, &mode)) + die("Failed to read notes tree referenced by %s (%s)", + notes_ref, object_sha1); hashclr(root_tree.key_sha1); hashcpy(root_tree.val_sha1, sha1); @@ -379,15 +392,8 @@ void format_note(const unsigned char *object_sha1, struct strbuf *sb, unsigned long linelen, msglen; enum object_type type; - if (!initialized) { - const char *env = getenv(GIT_NOTES_REF_ENVIRONMENT); - if (env) - notes_ref_name = getenv(GIT_NOTES_REF_ENVIRONMENT); - else if (!notes_ref_name) - notes_ref_name = GIT_NOTES_DEFAULT_REF; - initialize_notes(notes_ref_name); - initialized = 1; - } + if (!initialized) + init_notes(NULL, 0); sha1 = lookup_notes(object_sha1); if (!sha1) diff --git a/notes.h b/notes.h index d745ed1..6b52799 100644 --- a/notes.h +++ b/notes.h @@ -1,6 +1,26 @@ #ifndef NOTES_H #define NOTES_H +/* + * Flags controlling behaviour of notes tree initialization + * + * Default behaviour is to initialize the notes tree from the tree object + * specified by the given (or default) notes ref. + */ +#define NOTES_INIT_EMPTY 1 + +/* + * Initialize internal notes tree structure with the notes tree at the given + * ref. If given ref is NULL, the value of the $GIT_NOTES_REF environment + * variable is used, and if that is missing, the default notes ref is used + * ("refs/notes/commits"). + * + * If you need to re-intialize the internal notes tree structure (e.g. loading + * from a different notes ref), please first de-initialize the current notes + * tree by calling free_notes(). + */ +void init_notes(const char *notes_ref, int flags); + /* Free (and de-initialize) the internal notes tree structure */ void free_notes(void); -- 1.6.6.405.g80ed6