66 lines
1.8 KiB
Bash
Executable File
66 lines
1.8 KiB
Bash
Executable File
#! /bin/sh
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#
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# Parses a database URL in the format schema://user:
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#
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DB_URL="$1";
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DB_VAR_PREFIX="${DB_VAR_PREFIX:-DB_}";
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DB_ARG_VAR_PREFIX="${DB_ARG_VAR_PREFIX:-db_arg_}";
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# get URL's query args
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query_args="${DB_URL#*\?}";
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queryless_url="${DB_URL%%\?*}";
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# get URL's schema
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schema="${queryless_url%//*}";
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if test "${schema}" = "${queryless_url}"; then
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echo >&2 "database URLs must start with schema (i.e.: mysql://)"\
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&& echo >&2 "URL_INVALID_ERROR: \"${DB_URL}\""\
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&& exit 2;
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fi
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schemaless_url=${queryless_url#*//};
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# left hand is everything until the first @ (the user part)
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# with no @ there's no difference from $schemaless_url
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# so $username and $password will be blank
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left_hand=${schemaless_url%@*};
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if test ! ${left_hand} = ${schemaless_url}; then
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username=$(echo ${left_hand} | cut -d ':' -f 1);
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if test ! ${username} = ${left_hand}; then
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password=$(echo ${left_hand} | cut -d ':' -f 2);
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fi
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fi
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# the right hand is the host part (after @) and will be always present
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right_hand=${schemaless_url#*@};
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host=$(echo ${right_hand} | cut -d ':' -f 1 | cut -d '/' -f 1);
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if test -n "$(echo ${right_hand} | grep -o ':')"; then
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port=$(echo ${right_hand} | cut -d ':' -f 2 | cut -d '/' -f 1);
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fi
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if test -n "$(echo ${right_hand} | grep -o '/')"; then
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database=$(echo ${right_hand} | cut -d ':' -f 2 | cut -d '/' -f 2);
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fi
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# throw an error if $DB_URL is empty and so is $host
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if test -z "${host}"; then
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echo "database URL providen was invalid" && exit 1;
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fi
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cat << HEREDOC
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${DB_VAR_PREFIX}SCHEMA=${schema%:}
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${DB_VAR_PREFIX}USERNAME=${username}
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${DB_VAR_PREFIX}PASSWORD=${password}
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${DB_VAR_PREFIX}HOST=${host}
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${DB_VAR_PREFIX}PORT=${port}
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${DB_VAR_PREFIX}NAME=${database}
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$(
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echo ${query_args}\
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| sed 's/[&;]/\n/g'\
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| while read arg_item; do
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echo "${DB_ARG_VAR_PREFIX}${arg_item}";
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done
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)
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HEREDOC
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