public static Collection mapEnvVariables()

in src/main/java/CodeBuilder.java [953:984]
29 lines of code
11 McCabe index (conditional complexity)

    public static Collection<EnvironmentVariable> mapEnvVariables(String envVars, EnvironmentVariableType envVarType) throws InvalidInputException {
        Collection<EnvironmentVariable> result = new HashSet<EnvironmentVariable>();
        if(envVars == null || envVars.isEmpty()) {
            return result;
        }

        envVars = envVars.replaceAll("\\}\\s*,\\s*\\{", "},{");
        envVars = envVars.replaceAll("\\[\\s*\\{", "[{");
        envVars = envVars.replaceAll("\\}\\s*\\]", "}]");
        envVars = envVars.replaceAll("[\\n|\\t]", "").trim();
        if(envVars.length() < 4 || envVars.charAt(0) != '[' || envVars.charAt(envVars.length()-1) != ']' ||
           envVars.charAt(1) != '{' || envVars.charAt(envVars.length()-2) != '}') {
            throw new InvalidInputException(envVariableSyntaxError);
        } else {
            envVars = envVars.substring(2, envVars.length()-2);
        }

        int numCommas = envVars.replaceAll("[^,]", "").length();
        if(numCommas == 0) {
            throw new InvalidInputException(envVariableSyntaxError);
        }
        //single environment variable case vs multiple
        if(numCommas == 1) {
            result.add(deserializeCodeBuildEnvVar(envVars, envVarType));
        } else {
            String[] evs = envVars.split("\\},\\{");
            for(int i = 0; i < evs.length; i++) {
                result.add(deserializeCodeBuildEnvVar(evs[i], envVarType));
            }
        }
        return result;
    }