On 02/05/2016 08:44 PM, David Turner wrote:
> git init learns a new argument --ref-storage. Presently, only
> "files" is supported, but later we will add other storage backends.
>
> When this argument is used, the repository's extensions.refStorage
> configuration value is set (as well as core.repositoryformatversion),
> and the ref storage backend's initdb function is used to set up the
> ref database.
>
> Signed-off-by: David Turner <dtur...@twopensource.com>
> Signed-off-by: SZEDER Gábor <sze...@ira.uka.de>
> ---
> Documentation/git-init-db.txt | 2 +-
> Documentation/git-init.txt | 7 +++++-
> builtin/init-db.c | 44
> +++++++++++++++++++++++++++-------
> cache.h | 2 ++
> contrib/completion/git-completion.bash | 3 ++-
> path.c | 29 ++++++++++++++++++++--
> refs.c | 8 +++++++
> refs.h | 8 +++++++
> setup.c | 12 ++++++++++
> t/t0001-init.sh | 25 +++++++++++++++++++
> 10 files changed, 127 insertions(+), 13 deletions(-)
>
> [...]
> diff --git a/Documentation/git-init.txt b/Documentation/git-init.txt
> index 8174d27..d2b150f 100644
> --- a/Documentation/git-init.txt
> +++ b/Documentation/git-init.txt
> @@ -12,7 +12,7 @@ SYNOPSIS
> 'git init' [-q | --quiet] [--bare] [--template=<template_directory>]
> [--separate-git-dir <git dir>]
> [--shared[=<permissions>]] [directory]
> -
> + [--ref-storage=<name>]
>
> DESCRIPTION
> -----------
> @@ -113,6 +113,11 @@ does not exist, it will be created.
>
> --
>
> +--ref-storage=<name>::
> +Type of refs storage backend. Default is to use the original "files"
> +storage, which stores ref data in files in .git/refs and
> +.git/packed-refs.
> +
Technically, that should be $GIT_DIR/refs and $GIT_DIR/packed-refs. But
it might be that we are not so picky about the distinction in the user docs.
> TEMPLATE DIRECTORY
> ------------------
>
> diff --git a/builtin/init-db.c b/builtin/init-db.c
> index 801e977..d331ce8 100644
> --- a/builtin/init-db.c
> +++ b/builtin/init-db.c
> @@ -24,6 +24,7 @@ static int init_is_bare_repository = 0;
> static int init_shared_repository = -1;
> static const char *init_db_template_dir;
> static const char *git_link;
> +static char *requested_ref_storage_backend;
>
> static void copy_templates_1(struct strbuf *path, struct strbuf *template,
> DIR *dir)
> @@ -179,6 +180,7 @@ static int create_default_files(const char *template_path)
> int reinit;
> int filemode;
> struct strbuf err = STRBUF_INIT;
> + int repo_version = 0;
>
> /* Just look for `init.templatedir` */
> git_config(git_init_db_config, NULL);
> @@ -205,6 +207,32 @@ static int create_default_files(const char
> *template_path)
> }
>
> /*
> + * Create the default symlink from ".git/HEAD" to the "master"
I know that you are just moving this comment, but s/symlink/symref/
would make it more up-to-date.
> + * branch, if it does not exist yet.
> + */
> [...]
> diff --git a/setup.c b/setup.c
> index 0deb022..1a62277 100644
> --- a/setup.c
> +++ b/setup.c
> @@ -1,5 +1,6 @@
> #include "cache.h"
> #include "dir.h"
> +#include "refs.h"
> #include "string-list.h"
>
> static int inside_git_dir = -1;
> @@ -263,6 +264,15 @@ int get_common_dir_noenv(struct strbuf *sb, const char
> *gitdir)
> return ret;
> }
>
> +int ref_storage_backend_config(const char *var, const char *value, void *ptr)
> +{
> + char **cdata = ptr;
> +
> + if (!strcmp(var, "extensions.refstorage"))
> + *cdata = xstrdup(value);
> + return 0;
> +}
> +
> /*
> * Test if it looks like we're at a git directory.
> * We want to see:
> @@ -390,6 +400,8 @@ static int check_repo_format(const char *var, const char
> *value, void *cb)
> ;
> else if (!strcmp(ext, "preciousobjects"))
> repository_format_precious_objects =
> git_config_bool(var, value);
> + else if (!strcmp(ext, "refstorage"))
> + ref_storage_backend = xstrdup(value);
> else
> string_list_append(&unknown_extensions, ext);
> }
> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
> index 295aa59..31c8279 100755
> --- a/t/t0001-init.sh
> +++ b/t/t0001-init.sh
> @@ -174,6 +174,31 @@ test_expect_success 'reinit' '
> test_i18ncmp again/empty again/err2
> '
>
> +test_expect_success 'init with bogus storage backend fails' '
> +
> + (
> + mkdir again2 &&
> + cd again2 &&
> + test_must_fail git init --ref-storage=test >out2 2>err2 &&
> + test_i18ngrep "Unknown ref storage backend test" err2
> + )
> +'
> +
> +test_expect_failure 'reinit with changed storage backend fails' '
> +
> + (
> + mkdir again3 &&
> + cd again3 &&
> + git init >out1 2>err1 &&
> + git init --ref-storage=test >out2 2>err2
> + ) &&
> + test_i18ngrep "Initialized empty" again3/out1 &&
> + test_i18ngrep "Reinitialized existing" again3/out2 &&
> + >again3/empty &&
> + test_i18ncmp again3/empty again3/err1 &&
> + test_i18ncmp again3/empty again3/err2
> +'
> +
Is it worth testing re-initializing with the same --ref-storage? Perhaps
not.
> test_expect_success 'init with --template' '
> mkdir template-source &&
> echo content >template-source/file &&
>
Michael
--
Michael Haggerty
mhag...@alum.mit.edu
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