mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-20 21:40:15 +00:00
45 lines
1.7 KiB
Bash
45 lines
1.7 KiB
Bash
## fetches a submodule
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##
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## @param $1 name
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## @param $2 fallback Gzip URL
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## @param $3 fallback Git URL
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## @param $4 if set to 1, report submodule update
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## @retval 1 submodule was updated (and $4 was set to 1)
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## @retval 0 otherwise
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fetch_submodule() {
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MODULE=$1
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FALLBACK_URL=$2
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FALLBACK_GIT_URL=$3
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SUBMODULE_UPDATED= # assume that submodule have not been updated
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printf "Downloading ${MODULE}... "
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if ! command -v git >/dev/null; then
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if [ ! -d ext-deps/$MODULE ]; then
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echo "git not found - trying to download a release"
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mkdir -p ext-deps/tmp
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curl -L $FALLBACK_URL | tar -C ext-deps/tmp -xz
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[ -d ext-deps/$MODULE ] && rmdir ext-deps/$MODULE
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mv ext-deps/tmp/* ext-deps/$MODULE
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rmdir ext-deps/tmp
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else
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echo "skipped (ext-deps/$MODULE is already present)"
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fi
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elif ! git branch >/dev/null 2>&1; then
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# we are not in UltraGrid git repository but can use git to download
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if [ ! -d ext-deps/$MODULE ]; then
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echo "git submodule found - trying to clone"
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git clone $FALLBACK_GIT_URL ext-deps/$MODULE
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else
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echo "skipped (ext-deps/$MODULE is already present)"
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fi
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else
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SUBMODULE_UPDATED=`git submodule update --init ext-deps/$MODULE`
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if [ -z "$SUBMODULE_UPDATED" ]; then
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echo "not needed"
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return 0
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fi
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return ${4:-0}
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fi
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return 0
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}
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