build: Add support for shallow-cloning of subdirectories.
diff --git a/ChangeLog b/ChangeLog
index be963d6..c64970e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2019-09-01 Bruno Haible <bruno@clisp.org>
+
+ build: Add support for shallow-cloning of subdirectories.
+ * gitsub.sh (func_usage): Document allowed git options with 'git pull'.
+ (func_pull): Accept GIT_OPTIONS argument.
+ (pull): Parse git options before complaining about too many arguments.
+ Pass the git options to func_pull.
+
2019-07-05 Bruno Haible <bruno@clisp.org>
Don't export the symbol 'aliases_lookup' on non-ELF platforms.
diff --git a/gitsub.sh b/gitsub.sh
index 9665198..4df47fd 100755
--- a/gitsub.sh
+++ b/gitsub.sh
@@ -95,13 +95,17 @@
Operations:
-gitsub.sh pull [SUBDIR]
+gitsub.sh pull [GIT_OPTIONS] [SUBDIR]
You should perform this operation after 'git clone ...' and after
every 'git pull'.
It brings your checkout in sync with what the other developers of
your package have committed and pushed.
If an environment variable <SUBDIR>_SRCDIR is set, with a non-empty
value, nothing is done for this SUBDIR.
+ Supported GIT_OPTIONS (for expert git users) are:
+ --reference <repository>
+ --depth <depth>
+ --recursive
If no SUBDIR is specified, the operation applies to all dependencies.
gitsub.sh upgrade [SUBDIR]
@@ -201,7 +205,8 @@
echo "Try 'gitsub.sh --help' for more information." 1>&2
exit 1 ;;
esac
-if test $# = 2 && test $mode != checkout || test $# -gt 2; then
+if { test $mode = upgrade && test $# -gt 1; } \
+ || { test $mode = checkout && test $# -gt 2; }; then
echo "gitsub.sh: too many arguments in '$mode' mode" 1>&2
echo "Try 'gitsub.sh --help' for more information." 1>&2
exit 1
@@ -335,7 +340,7 @@
func_fatal_error "git clone failed"
}
-# func_pull SUBDIR
+# func_pull SUBDIR GIT_OPTIONS
# Implements the 'pull' operation.
func_pull ()
{
@@ -350,7 +355,7 @@
else
# The subdir does not yet exist. Create a plain checkout.
trap func_cleanup_current_git_clone 1 2 13 15
- git clone "$url" "$path" || func_cleanup_current_git_clone
+ git clone $2 "$url" "$path" || func_cleanup_current_git_clone
trap - 1 2 13 15
fi
;;
@@ -359,7 +364,7 @@
# It's a submodule.
if test -n "$needs_init"; then
# Create a submodule checkout.
- git submodule init -- "$path" && git submodule update -- "$path" || func_fatal_error "git operation failed"
+ git submodule init -- "$path" && git submodule update $2 -- "$path" || func_fatal_error "git operation failed"
else
# See https://stackoverflow.com/questions/1030169/easy-way-to-pull-latest-of-all-git-submodules
# https://stackoverflow.com/questions/4611512/is-there-a-way-to-make-git-pull-automatically-update-submodules
@@ -428,9 +433,30 @@
case "$mode" in
pull )
+ git_options=""
+ while test $# -gt 0; do
+ case "$1" in
+ --reference=* | --depth=* | --recursive)
+ git_options="$git_options $1"
+ shift
+ ;;
+ --reference | --depth)
+ git_options="$git_options $1 $2"
+ shift; shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+ done
+ if test $# -gt 1; then
+ echo "gitsub.sh: too many arguments in '$mode' mode" 1>&2
+ echo "Try 'gitsub.sh --help' for more information." 1>&2
+ exit 1
+ fi
if test $# = 0; then
for sub in $subcheckout_names $submodule_names; do
- func_pull "$sub"
+ func_pull "$sub" "$git_options"
done
else
valid=false
@@ -440,7 +466,7 @@
fi
done
if $valid; then
- func_pull "$1"
+ func_pull "$1" "$git_options"
else
func_fatal_error "Subdir '$1' is not configured as a subcheckout or a submodule in .gitmodules"
fi
