104 lines
3.5 KiB
Plaintext
104 lines
3.5 KiB
Plaintext
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#!/bin/bash
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# environment and environment file functions
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clean_env_file () {
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local compact
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module_load helpers
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# -c will also remove comments and all empty lines
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[[ $1 == "-c" ]] && compact=true && shift 1
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#
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# remove trailing spaces | remove double quotes
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# | remove blanks after equals and quote value | remove any spaces before afer =
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# remove blank lines | remove comment lines if requested
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cat $1 | sed_ignore_comments s/\\s*$//g | sed_ignore_comments s/\"//g \
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| sed_ignore_comments s/\(=[[:blank:]]*\)\(.*\)/\\1\"\\2\"/ \
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| sed_ignore_comments s/\\s*=\\s*/=/g \
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| sed -rz 's/^\n+//; s/\n+$/\n/g' | if [[ $compact ]]; then grep -v '^#' | grep -v "^$" ; else cat; fi
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}
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# https://stackoverflow.com/questions/19331497/set-environment-variables-from-file-of-key-value-pairs
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env_file () {
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env=${1:-.env}
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[[ -f "${env}" ]] && { echo $env; return 0; } # || echo not $env
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[[ -f "${env}.env" ]] && { echo "${env}.env"; return 0; } # || echo not ${env}.env
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[[ -f "${env}/.env" ]] && { echo "${env}/.env"; return 0; } # || echo not ${env}/.env
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return 1
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}
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# ignore non assignment lines
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list_env_file_vars () {
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env=$(env_file $1)
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# cat $env
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[[ ! $env ]] && { iecho "Env file ${1} doesn't exist"; return 1; }
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clean_env_file $env | grep -v '^#'| sed -n -E 's/(.*)=[^ =].*/\1/p' | xargs
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}
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function load_env_file() {
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# second argument, "-x" will export within function (or anything called), "-gx" is equivalent of export and is global
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env=$(env_file $1)
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[[ ! $env ]] && { iecho "Env file ${1} doesn't exist"; return 1; }
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while read line; do
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# echo var to add $line
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declare $2 "$(echo "${line}" | sed 's/\"//g' )"
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done < <(clean_env_file -c $env)
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}
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# list_env_file_vals() {
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# local vars
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# vars=$(list_env_file_vars $1)
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# echo $vars
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# [[ $? -gt 0 ]] && return 1
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# export_env_file $1
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# for var in $vars ;
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# do
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# "$var=${!var}"
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# done
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# }
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export_env_file () {
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load_env_file $1 -gx
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}
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unset_env_file () {
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env=$(env_file $1)
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[[ ! $env ]] && { iecho "Env file ${1} doesn't exist"; return 1; }
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unset $(clean_env_file -c ${env} | sed -E 's/(.*)=.*/\1/' | xargs)
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}
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testenv () {
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echo in testenv
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echo TEST Variable $TEST
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env | grep TEST
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echo done testenv
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}
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# https://www.baeldung.com/linux/envsubst-command
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# todo allow input file -o overwrite or to another file -f <name>
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env_subs_file () {
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local fin; local fenv; local useenv; local tout; local fout; local fenv; local tout2
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[[ $1 == "-e" ]] && useenv=true && shift 1
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[[ $1 == "-o" ]] && { shift 1; fout=$1; }
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[[ $1 == "-f" ]] && { fout=$2; shift 2; }
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fin=$1; fenv=$2
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# echo useenv $useenv, fout $fout, fin $fin, fenv $fenv
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[[ ! $fin ]] && iecho "nothing was passed to merge with environment" && return 1
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[[ ! -f "$fin" ]] && iecho "file $fin does not exit nothing to merge with environment" && return 1
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[[ ! $(cat $fin | grep -F "$") ]] && iecho "no variables in $fin to merge" && return 2
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tout=/tmp/${USER}-mergedenvfile
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if [[ $useenv ]] && [[ -f $fenv ]]; then
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tout2=/tmp/${USER}-mergedenvfile2
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cat $fin | envsubst "$(printf '${%s} ' $(env | cut -d'=' -f1) )" > $tout2
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fin=$tout2
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fi
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if [[ -f $fenv ]]; then
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(export_env_file $fenv; cat $fin | envsubst "$(printf '${%s} ' $(clean_env_file -c $fenv | cut -d'=' -f1) )")
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else
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cat $fin | envsubst "$(printf '${%s} ' $(env | cut -d'=' -f1) )"
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fi > $tout
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[[ -f $tout2 ]] && rm -f $tout2
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[[ $fout ]] && mv -f $tout $fout || { echo merged; cat "$tout"; }
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# env | grep BASE
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# # unset_env_file $2
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}
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