mirror of
https://github.com/mbierlee/mirage-config.git
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119 lines
3 KiB
D
119 lines
3 KiB
D
/**
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* Utilities for loading Java properties files.
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*
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* Authors:
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* Mike Bierlee, m.bierlee@lostmoment.com
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* Copyright: 2022 Mike Bierlee
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* License:
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* This software is licensed under the terms of the MIT license.
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* The full terms of the license can be found in the LICENSE file.
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*/
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module mirage.java;
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import mirage.config : ConfigDictionary;
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import mirage.keyvalue : KeyValueConfigFactory, SupportHashtagComments, SupportSemicolonComments, SupportSections;
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/**
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* Creates configuration files from Java properties.
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*/
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class JavaPropertiesFactory : KeyValueConfigFactory!(
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SupportHashtagComments.yes,
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SupportSemicolonComments.no,
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SupportSections.no
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) {
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}
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/**
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* Parse Java properties from the given Java properties string.
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* Params:
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* properties = Text contents of the config to be parsed.
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* Returns: The parsed configuration.
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*/
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ConfigDictionary parseJavaProperties(const string properties) {
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return new JavaPropertiesFactory().parseConfig(properties);
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}
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/**
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* Load a Java properties file from disk.
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*
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* Params:
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* filePath = Path to the Java properties file.
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* Returns: The loaded configuration.
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*/
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ConfigDictionary loadJavaProperties(const string filePath) {
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return new JavaPropertiesFactory().loadFile(filePath);
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}
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version (unittest) {
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import std.exception : assertThrown;
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import std.process : environment;
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import mirage.config : ConfigCreationException;
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@("Parse java properties")
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unittest {
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auto config = parseJavaProperties("
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# I have a comment
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bla=one
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di.bla=two
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");
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assert(config.get("bla") == "one");
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assert(config.get("di.bla") == "two");
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}
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@("Parse java properties file")
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unittest {
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auto config = loadJavaProperties("testfiles/java.properties");
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assert(config.get("bla") == "one");
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assert(config.get("di.bla") == "two");
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}
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@("Fail to parse when there are too many equals signs")
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unittest {
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assertThrown!ConfigCreationException(parseJavaProperties("one=two=three"));
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}
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@("Fail to parse when value assignment is missing")
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unittest {
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assertThrown!ConfigCreationException(parseJavaProperties("answertolife"));
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}
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@("Substitute env vars")
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unittest {
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environment["MIRAGE_TEST_ENVY"] = "Much";
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auto config = parseJavaProperties("envy=$MIRAGE_TEST_ENVY");
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assert(config.get("envy") == "Much");
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}
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@("Use value from other key")
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unittest {
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auto config = parseJavaProperties("
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one=money
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two=${one}
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");
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assert(config.get("two") == "money");
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}
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@("Values and keys are trimmed")
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unittest {
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auto config = parseJavaProperties("
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one = money
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");
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assert(config.get("one") == "money");
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}
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@("Remove end-of-line comments")
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unittest {
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auto config = parseJavaProperties("
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server=localhost #todo: change me. default=localhost when not set.
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");
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assert(config.get("server") == "localhost");
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}
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}
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