Yann Autissier
f2bcbc6857
myos export prints every setting the requested stacks declare, in one process: 68 variables in half a second, where asking for them one at a time costs a process each and about ten seconds. The shim reads that once and includes it, so a .mk target sees HOST_FABIO_VERSION and the computed fabio tag without make knowing anything about how they are produced. --make quotes the values so make neither expands a $ nor starts a comment at a #.
37 lines
1.3 KiB
Bash
37 lines
1.3 KiB
Bash
#shellcheck shell=sh
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# myos export print every setting the requested stacks declare, as KEY=value.
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#
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# One call, so a Makefile can read the whole set at once:
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# $(eval $(shell myos export STACK=host))
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# Asking for each variable separately costs a process per variable.
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myos_cmd_export() {
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# shellcheck disable=SC2209 # these are literal format names, not commands
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_fmt=sh
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# shellcheck disable=SC2209
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case ${MYOS_ARGS:-}${MYOS_VARS:-} in *--make*) _fmt=make ;; esac
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for _v in $(myos_declared_defaults); do
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_val=$(myos_var "$_v")
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case $_fmt in
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make)
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# make would expand a $ and start a comment at a #, and := stops it
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# from expanding the value again later
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printf '%s := %s\n' "$_v" "$(printf '%s' "$_val" | sed -e 's/\$/$$/g' -e 's/#/\\#/g')" ;;
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*) printf '%s=%s\n' "$_v" "$_val" ;;
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esac
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done
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}
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# myos_declared_defaults the variables the loaded hooks declare
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myos_declared_defaults() {
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for _ref in $MYOS_STACKS; do
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for _d in $(myos_stack_dirs "$_ref"); do
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for _f in "$_d"/_stack.sh "$_d/$(myos_stack_name "$_ref").sh"; do
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[ -f "$_f" ] && sed -n 's/^myos_default_\([A-Za-z_][A-Za-z0-9_]*\)().*/\1/p' "$_f"
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done
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for _f in "$_d"/_stack.env "$_d/$(myos_stack_name "$_ref").env"; do
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[ -f "$_f" ] && myos_dotenv_parse "$_f" | sed 's/=.*//'
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done
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done
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done | sort -u
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}
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