exitIfVariablesNotDefined and use in parse-(fn-)args

README.md

@@ -1385,6 +1385,10 @@ exitIfCommandDoesNotExist "git" "please install it via https://git-scm.com/downl
 
 # meant to be used in a file which is sourced where a contract exists between the file which `source`s and the sourced file
 exitIfVarsNotAlreadySetBySource myVar1 var2 var3
+
+declare myVar4
+exitIfVariablesNotDefined myVar4 myVar5 # would exit because myVar5 is not set
+echo "myVar4 $myVar4"
 ```
 
 </utility-checks>

spec/utility/parse-args_spec.sh

@@ -14,6 +14,8 @@ Describe 'parse-arg.sh'
 	Describe 'parseArguments'
 		Describe '--help'
 			It 'without examples'
+				# shellcheck disable=SC2034	# withoutHelp is never used but that's fine
+				declare version withoutHelp
 				declare params=(
 					version -v 'The version'
 					withoutHelp -wv ''
@@ -22,11 +24,12 @@ Describe 'parse-arg.sh'
 				The status should be successful
 				The output should include 'Parameters'
 				The output should include '-v'
-				The output should include '-wv'
 				The output should include 'The version'
+				The output should include '-wv'
 				The output should not include 'Examples'
 			End
 			It 'with examples'
+				declare version
 				declare params=(version -v 'The version')
 				When call parseArguments params "example code\non multiple lines" 'v1.0.0' --help
 				The status should be successful
@@ -38,14 +41,15 @@ Describe 'parse-arg.sh'
 			End
 		End
 		It '--version'
+			declare version
 			declare params=(version -v 'The version')
 			When call parseArguments params "example code\non multiple lines" "v1.2.0-RC2" --version
 			The status should be successful
 			The output should include 'v1.2.0-RC2'
 		End
 		Describe 'happy cases'
 			It 'does not fail if not for all parameters an argument is passed'
-					declare version
+					declare version asdf
 					declare params=(
 						version -v ''
 						asdf -a ''
@@ -56,7 +60,8 @@ Describe 'parse-arg.sh'
 			End
 			It 'does not pollute parent "scope"'
 				function foo() {
-					declare version
+					# shellcheck disable=SC2034	#
+					declare version asdf
 					declare params=(
 						version -v ''
 						asdf -a ''
@@ -71,13 +76,15 @@ Describe 'parse-arg.sh'
 		End
 		Describe 'errors'
 			It 'not enough arguments passed'
+				declare version
 				declare params=(version -v '')
 				When run parseArguments params
 				The status should be failure
 				The stderr should include 'At least three arguments need to be passed to parseArguments'
 			End
 			Describe 'wrong number in params'
 				It 'one leftover'
+					declare version
 					declare params=(version -v '' leftOver1)
 					When run parseArguments params '' 'v1.0.0'--help
 					The status should be failure
@@ -88,6 +95,7 @@ Describe 'parse-arg.sh'
 					The stderr should include 'leftOver1'
 				End
 				It 'two leftovers'
+					declare version
 					declare params=(version -v '' leftOver1 leftOver2)
 					When run parseArguments params '' 'v1.0.0' --help
 					The status should be failure
@@ -106,6 +114,16 @@ Describe 'parse-arg.sh'
 				The stderr should include "$(printf "array \033[0;36massociativeParams\033[0m is broken")"
 				The stderr should include 'The first argument to parse_args_exitIfParameterDefinitionIsNotTriple needs to be a non-associative array containing parameter definitions'
 			End
+			It 'fails if variable not defined in scope'
+				declare version
+				declare params=(
+					version -v ''
+					asdf -a ''
+				)
+				When run parseArguments params 'example' 'v1.0.0' -v v0.1.0
+				The status should be failure
+				The stderr should include "$(printf "you need to define the variable \033[0;36masdf\033[0m")"
+			End
 		End
 	End
 

src/utility/checks.doc.sh

@@ -53,3 +53,7 @@ exitIfCommandDoesNotExist "git" "please install it via https://git-scm.com/downl
 
 # meant to be used in a file which is sourced where a contract exists between the file which `source`s and the sourced file
 exitIfVarsNotAlreadySetBySource myVar1 var2 var3
+
+declare myVar4
+exitIfVariablesNotDefined myVar4 myVar5 # would exit because myVar5 is not set
+echo "myVar4 $myVar4"

src/utility/checks.sh

@@ -70,6 +70,10 @@
 #    # meant to be used in a file which is sourced where a contract exists between the file which `source`s and the sourced file
 #    exitIfVarsNotAlreadySetBySource myVar1 var2 var3
 #
+#    declare myVar4
+#    exitIfVariablesNotDefined myVar4 myVar5 # would exit because myVar5 is not set
+#    echo "myVar4 $myVar4"
+#
 ###################################
 set -euo pipefail
 shopt -s inherit_errexit
@@ -295,3 +299,14 @@ function exitIfVarsNotAlreadySetBySource() {
 		fi
 	done
 }
+
+function exitIfVariablesNotDefined() {
+	shift 1 || die "could not shift by 1"
+	for variableName in "$@"; do
+		if ! declare -p "$variableName" 2>/dev/null | grep -q 'declare --'; then
+			logError "you need to define the variable \033[0;36m%s\033[0m otherwise we write to the global scope" "$variableName"
+			printStackTrace
+			exit 1
+		fi
+	done
+}

src/utility/parse-args.sh

@@ -135,6 +135,11 @@ function parseArgumentsInternal {
 
 	parse_args_exitIfParameterDefinitionIsNotTriple parseArguments_paramArr
 
+	# shellcheck disable=SC2034		# passed by name to exitIfVariablesNotDefined
+	local -a parseArguments_variableNames
+	arrTakeEveryX parseArguments_paramArr parseArguments_variableNames 3 0
+	exitIfVariablesNotDefined "${parseArguments_variableNames[@]}"
+
 	local -ri parseArguments_arrLength="${#parseArguments_paramArr[@]}"
 
 	local -i parseArguments_numOfArgumentsParsed=0

src/utility/parse-fn-args.sh

@@ -127,6 +127,8 @@ function parseFnArgs() {
 		exit 9
 	fi
 
+	exitIfVariablesNotDefined "${parseFnArgs_paramArr1[@]}"
+
 	for ((parseFnArgs_i = 0; parseFnArgs_i < parseFnArgs_minExpected; ++parseFnArgs_i)); do
 		local parseFnArgs_name=${parseFnArgs_paramArr1[parseFnArgs_i]}
 		# assign arguments to specified variables