From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.3 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 441D020193 for ; Thu, 11 Aug 2016 23:14:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752372AbcHKXOX (ORCPT ); Thu, 11 Aug 2016 19:14:23 -0400 Received: from mail-pa0-f51.google.com ([209.85.220.51]:36764 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752127AbcHKXOV (ORCPT ); Thu, 11 Aug 2016 19:14:21 -0400 Received: by mail-pa0-f51.google.com with SMTP id pp5so2703649pac.3 for ; Thu, 11 Aug 2016 16:14:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=mLeHLJBl2v9yHzut1HrmA7mSrS78qWQbh/foaolnTUo=; b=D5hj3IPx5132owPF7sE1dftSjX5KDaAKp58ex1e3vekYzgylMbPpnoIfIzE3ELCGUI gi/AHv9ctM5CLeeHa8Cv85dBFiTa3/vqJIMQycn/9uhS0sNlsKQaAvtyrUbp1kiwPmWP U4CsFZQEsADZxK1SMtZR+tTRxlzMtCFGvuyt7oSvLsSk9qK5Hf/iKFAmnXDjCDXkv4ev SeWej7QuOKeRLBgjAthf2GO1dyP1U+wJXgLT8Vou/uQGtXH/mu8kAai54ETIkSo08D8E M3AHIuk7iNAfeaxhpMbTialgy/2m4nB5R5Do1SFYUVQBk/uiZcPr2vm4WpPla+3gAEF9 uhTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mLeHLJBl2v9yHzut1HrmA7mSrS78qWQbh/foaolnTUo=; b=FXYDODVSwKCtF9GjMZqlm/7255m9UKQYNVxEfJuTzskM0vaTTy8tk7PeYBb16mlh6g SFl6d8ICnwlywGuZrp4SgrCnKoO6fTBQJoUhFc0CYy5P02KB0iG5SkyydtoWauLM8LO4 zfdYcAKzp+AFMpSulOL2BNB4k/Wwh4zxby0KnHS6VhvyY1CHoFGM1il0NXAgpJ2jKV/i 3081eM+ZOrjsB+85Ex86zR1b21cmJflYzOD5I6GlcEXbKOfoyqakJVTZcjnSHM8QAMOg ao3fkSzgT9YqZaDWONJT6FtieDnL+AQeDXDcnbDl7eJKKUk0CBnXt2GvCuxwilIWfRpH H2dg== X-Gm-Message-State: AEkoouv42N9EnltcFyfEp2umOA08RrWSPfb0NazWtstU8fgjyhP4B/tghUTB4cRCKw4WhTNy X-Received: by 10.66.191.66 with SMTP id gw2mr21390645pac.153.1470957260247; Thu, 11 Aug 2016 16:14:20 -0700 (PDT) Received: from localhost ([2620:0:1000:5b10:2879:1504:a6e4:e441]) by smtp.gmail.com with ESMTPSA id v26sm7722404pfi.41.2016.08.11.16.14.19 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Thu, 11 Aug 2016 16:14:19 -0700 (PDT) From: Stefan Beller To: gitster@pobox.com Cc: git@vger.kernel.org, jrnieder@gmail.com, Jens.Lehmann@web.de, Stefan Beller Subject: [PATCHv4 5/8] clone: factor out checking for an alternate path Date: Thu, 11 Aug 2016 16:14:02 -0700 Message-Id: <20160811231405.17318-6-sbeller@google.com> X-Mailer: git-send-email 2.9.2.737.g4a14654 In-Reply-To: <20160811231405.17318-1-sbeller@google.com> References: <20160811231405.17318-1-sbeller@google.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org In a later patch we want to determine if a path is suitable as an alternate from other commands than builtin/clone. Move the checking functionality of `add_one_reference` to `compute_alternate_path` that is defined in cache.h. Signed-off-by: Stefan Beller --- builtin/clone.c | 42 ++++++-------------------------- cache.h | 1 + sha1_file.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 82 insertions(+), 35 deletions(-) diff --git a/builtin/clone.c b/builtin/clone.c index f044a8c..24b17539 100644 --- a/builtin/clone.c +++ b/builtin/clone.c @@ -282,44 +282,16 @@ static void strip_trailing_slashes(char *dir) static int add_one_reference(struct string_list_item *item, void *cb_data) { - char *ref_git; - const char *repo; - struct strbuf alternate = STRBUF_INIT; - - /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */ - ref_git = xstrdup(real_path(item->string)); - - repo = read_gitfile(ref_git); - if (!repo) - repo = read_gitfile(mkpath("%s/.git", ref_git)); - if (repo) { - free(ref_git); - ref_git = xstrdup(repo); - } - - if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) { - char *ref_git_git = mkpathdup("%s/.git", ref_git); - free(ref_git); - ref_git = ref_git_git; - } else if (!is_directory(mkpath("%s/objects", ref_git))) { - struct strbuf sb = STRBUF_INIT; - if (get_common_dir(&sb, ref_git)) - die(_("reference repository '%s' as a linked checkout is not supported yet."), - item->string); - die(_("reference repository '%s' is not a local repository."), - item->string); - } + struct strbuf sb = STRBUF_INIT; + char *ref_git = compute_alternate_path(item->string, &sb); - if (!access(mkpath("%s/shallow", ref_git), F_OK)) - die(_("reference repository '%s' is shallow"), item->string); + if (!ref_git) + die("%s", sb.buf); - if (!access(mkpath("%s/info/grafts", ref_git), F_OK)) - die(_("reference repository '%s' is grafted"), item->string); + strbuf_addf(&sb, "%s/objects", ref_git); + add_to_alternates_file(sb.buf); - strbuf_addf(&alternate, "%s/objects", ref_git); - add_to_alternates_file(alternate.buf); - strbuf_release(&alternate); - free(ref_git); + strbuf_release(&sb); return 0; } diff --git a/cache.h b/cache.h index 95a0bd3..35f41f7 100644 --- a/cache.h +++ b/cache.h @@ -1344,6 +1344,7 @@ extern struct alternate_object_database { } *alt_odb_list; extern void prepare_alt_odb(void); extern void read_info_alternates(const char * relative_base, int depth); +extern char *compute_alternate_path(const char *path, struct strbuf *err); extern void add_to_alternates_file(const char *reference); typedef int alt_odb_fn(struct alternate_object_database *, void *); extern int foreach_alt_odb(alt_odb_fn, void*); diff --git a/sha1_file.c b/sha1_file.c index 02940f1..7351d8c 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -418,6 +418,80 @@ void add_to_alternates_file(const char *reference) free(alts); } +/* + * Compute the exact path an alternate is at and returns it. In case of + * error NULL is returned and the human readable error is added to `err` + * `path` may be relative and should point to $GITDIR. + * `err` must not be null. + */ +char *compute_alternate_path(const char *path, struct strbuf *err) +{ + char *ref_git = NULL; + const char *repo, *ref_git_s; + struct strbuf err_buf = STRBUF_INIT; + + ref_git_s = real_path_if_valid(path); + if (!ref_git_s) { + strbuf_addf(&err_buf, _("path '%s' does not exist"), path); + goto out; + } else + /* + * Beware: read_gitfile(), real_path() and mkpath() + * return static buffer + */ + ref_git = xstrdup(ref_git_s); + + repo = read_gitfile(ref_git); + if (!repo) + repo = read_gitfile(mkpath("%s/.git", ref_git)); + if (repo) { + free(ref_git); + ref_git = xstrdup(repo); + } + + if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) { + char *ref_git_git = mkpathdup("%s/.git", ref_git); + free(ref_git); + ref_git = ref_git_git; + } else if (!is_directory(mkpath("%s/objects", ref_git))) { + struct strbuf sb = STRBUF_INIT; + if (get_common_dir(&sb, ref_git)) { + strbuf_addf(&err_buf, + _("reference repository '%s' as a linked " + "checkout is not supported yet."), + path); + goto out; + } + + strbuf_addf(&err_buf, _("reference repository '%s' is not a " + "local repository."), path); + goto out; + } + + if (!access(mkpath("%s/shallow", ref_git), F_OK)) { + strbuf_addf(&err_buf, _("reference repository '%s' is shallow"), + path); + goto out; + } + + if (!access(mkpath("%s/info/grafts", ref_git), F_OK)) { + strbuf_addf(&err_buf, + _("reference repository '%s' is grafted"), + path); + goto out; + } + +out: + if (err_buf.len) { + strbuf_addbuf(err, &err_buf); + free(ref_git); + ref_git = NULL; + } + + strbuf_release(&err_buf); + return ref_git; +} + int foreach_alt_odb(alt_odb_fn fn, void *cb) { struct alternate_object_database *ent; -- 2.9.2.737.g4a14654