added possibility to document template parameters

master
Marc Wäckerlin 7 years ago
parent 501df8a948
commit 5c338d1692
  1. 20
      template.sh

@ -2,11 +2,20 @@
while test $# -gt 0; do
case "$1" in
(-h|--help) cat <<EOF
(-h|--help) if test -e "${!#}"; then
cat <<EOF
$0 $(sed -n 's,^ *# *,,p' "${!#}" | tr '\n' ' ') ${!#}
EOF
else
cat <<EOF
$0 [OPTIONS] FILE
OPTIONS
-h, --help Show this help
-h, --help file Show usage of template file (if documented)
-v, --var name=value Set environment variable to be used in the template.
-p, --pwd name Generate a random password with the given name.
@ -17,6 +26,9 @@ FILE
and execute bash commands, e.g. you are allowed wo use the \$()
expression.
Document the parameters that shall be used in comment lines, this
are lines thet start with # followed by -v or -p options.
DESCRIPTION
Parse a template file and generate an instance for it, using the
@ -27,6 +39,9 @@ EXAMPLE
file wordpress.tpl
-----------------------------------------------------------------------------
# -v NAME=
# -v PORT=
# -p PASSWORD
version: '3.3'
services:
mysql:
@ -68,6 +83,7 @@ services:
$0 -v NAME=my-site -v PORT=8006 -p PASSWORD wordpress.tpl > my-site.yaml
EOF
fi
exit;;
(-v|--var) shift;
if [[ $1 =~ ^[a-zA-Z][a-zA-Z0-9_]*= ]]; then
@ -107,6 +123,6 @@ if ! test -e "$file"; then
exit 1
fi
eval "cat <<EOFXXXX
eval "sed '/^ *#/d' <<EOFXXXX
$(<$file)
EOFXXXX"

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