Sometimes the history of a submodule is not considered important by
the projects upstream. To make it easier for downstream users, allow
a boolean field 'submodule.<name>.shallow' in .gitmodules, which can
be used to recommend whether upstream considers the history important.
This field is honored in the initial clone by default, it can be
ignored by giving the `--no-recommend-shallow` option.
Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
Documentation/git-submodule.txt | 10 ++++++--
builtin/submodule--helper.c | 7 +++++-
git-submodule.sh | 9 ++++++-
t/t5614-clone-submodules.sh | 52 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 74 insertions(+), 4 deletions(-)
diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index 9226c43..c928c0d 100644
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -15,8 +15,9 @@ SYNOPSIS
'git submodule' [--quiet] init [--] [<path>...]
'git submodule' [--quiet] deinit [-f|--force] (--all|[--] <path>...)
'git submodule' [--quiet] update [--init] [--remote] [-N|--no-fetch]
- [-f|--force] [--rebase|--merge] [--reference <repository>]
- [--depth <depth>] [--recursive] [--jobs <n>] [--] [<path>...]
+ [--[no-]recommended-depth] [-f|--force] [--rebase|--merge]
+ [--reference <repository>] [--depth <depth>] [--recursive]
+ [--jobs <n>] [--] [<path>...]
'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) <n>]
[commit] [--] [<path>...]
'git submodule' [--quiet] foreach [--recursive] <command>
@@ -384,6 +385,11 @@ for linkgit:git-clone[1]'s `--reference` and `--shared` options carefully.
clone with a history truncated to the specified number of revisions.
See linkgit:git-clone[1]
+--[no-]recommended-depth::
+ This option is only valid for the update command.
+ The initial clone of a submodule will use the recommended
+ `submodule.<name>.depth` as provided by the .gitmodules file.
+
-j <n>::
--jobs <n>::
This option is only valid for the update command.
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 8da263f..ca33408 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -581,6 +581,7 @@ struct submodule_update_clone {
/* configuration parameters which are passed on to the children */
int quiet;
+ int recommend_shallow;
const char *reference;
const char *depth;
const char *recursive_prefix;
@@ -593,7 +594,7 @@ struct submodule_update_clone {
unsigned quickstop : 1;
};
#define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
- SUBMODULE_UPDATE_STRATEGY_INIT, 0, NULL, NULL, NULL, NULL, \
+ SUBMODULE_UPDATE_STRATEGY_INIT, 0, -1, NULL, NULL, NULL, NULL, \
STRING_LIST_INIT_DUP, 0}
@@ -698,6 +699,8 @@ static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
argv_array_push(&child->args, "--quiet");
if (suc->prefix)
argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
+ if (suc->recommend_shallow && sub->recommend_shallow == 1)
+ argv_array_push(&child->args, "--depth=1");
argv_array_pushl(&child->args, "--path", sub->path, NULL);
argv_array_pushl(&child->args, "--name", sub->name, NULL);
argv_array_pushl(&child->args, "--url", url, NULL);
@@ -780,6 +783,8 @@ static int update_clone(int argc, const char **argv, const char *prefix)
"specified number of revisions")),
OPT_INTEGER('j', "jobs", &max_jobs,
N_("parallel jobs")),
+ OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
+ N_("whether the initial clone should follow the shallow recommendation")),
OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
OPT_END()
};
diff --git a/git-submodule.sh b/git-submodule.sh
index 5a4dec0..42e0e9f 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -9,7 +9,7 @@ USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <re
or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
or: $dashless [--quiet] init [--] [<path>...]
or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
- or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--reference <repository>] [--recursive] [--] [<path>...]
+ or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
or: $dashless [--quiet] foreach [--recursive] <command>
or: $dashless [--quiet] sync [--recursive] [--] [<path>...]"
@@ -559,6 +559,12 @@ cmd_update()
--checkout)
update="checkout"
;;
+ --recommend-shallow)
+ recommend_shallow="--recommend-shallow"
+ ;;
+ --no-recommend-shallow)
+ recommend_shallow="--no-recommend-shallow"
+ ;;
--depth)
case "$2" in '') usage ;; esac
depth="--depth=$2"
@@ -601,6 +607,7 @@ cmd_update()
${update:+--update "$update"} \
${reference:+--reference "$reference"} \
${depth:+--depth "$depth"} \
+ ${recommend_shallow:+"$recommend_shallow"} \
${jobs:+$jobs} \
"$@" || echo "#unmatched"
} | {
diff --git a/t/t5614-clone-submodules.sh b/t/t5614-clone-submodules.sh
index 62044c5..32d83e2 100755
--- a/t/t5614-clone-submodules.sh
+++ b/t/t5614-clone-submodules.sh
@@ -82,4 +82,56 @@ test_expect_success 'non shallow clone with shallow submodule' '
)
'
+test_expect_success 'clone follows shallow recommendation' '
+ test_when_finished "rm -rf super_clone" &&
+ git config -f .gitmodules submodule.sub.shallow true &&
+ git add .gitmodules &&
+ git commit -m "recommed shallow for sub" &&
+ git clone --recurse-submodules --no-local "file://$pwd/." super_clone &&
+ (
+ cd super_clone &&
+ git log --oneline >lines &&
+ test_line_count = 4 lines
+ ) &&
+ (
+ cd super_clone/sub &&
+ git log --oneline >lines &&
+ test_line_count = 1 lines
+ )
+'
+
+test_expect_success 'get unshallow recommended shallow submodule' '
+ test_when_finished "rm -rf super_clone" &&
+ git clone --no-local "file://$pwd/." super_clone &&
+ (
+ cd super_clone &&
+ git submodule update --init --no-recommend-shallow &&
+ git log --oneline >lines &&
+ test_line_count = 4 lines
+ ) &&
+ (
+ cd super_clone/sub &&
+ git log --oneline >lines &&
+ test_line_count = 3 lines
+ )
+'
+
+test_expect_success 'clone follows non shallow recommendation' '
+ test_when_finished "rm -rf super_clone" &&
+ git config -f .gitmodules submodule.sub.shallow false &&
+ git add .gitmodules &&
+ git commit -m "recommed non shallow for sub" &&
+ git clone --recurse-submodules --no-local "file://$pwd/." super_clone &&
+ (
+ cd super_clone &&
+ git log --oneline >lines &&
+ test_line_count = 5 lines
+ ) &&
+ (
+ cd super_clone/sub &&
+ git log --oneline >lines &&
+ test_line_count = 3 lines
+ )
+'
+
test_done
--
2.9.0.rc0.2.g145fc64
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