Anonymous user
Read a configuration file: Difference between revisions
→{{header|Java}}
m (remove duplicated entry) |
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Line 2,251:
{{out}}
<pre>{otherfamily=[Rhu Barber, Harry Barber], favouritefruit=banana, seedsremoved=false, needspeeling=true, fullname=Foo Barber}</pre>
A more functional and concise approach using Java 8:
<lang Java>import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
public class ConfigReader {
private static final Pattern LINE_PATTERN = Pattern.compile("([^ =]+)[ =]?(.*)");
public static void main(final String[] args) throws IOException {
System.out.println(parseFile(args[0]));
}
public static Map<String, Object> parseFile(final String fileName) throws IOException {
final Map<String, Object> result = new HashMap<>();
result.put("needspeeling", false);
result.put("seedsremoved", false);
try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) {
result.putAll(reader.lines()
.filter(line -> !"".equals(line.trim()) && !line.startsWith("#") && !line.startsWith(";"))
.map(LINE_PATTERN::matcher)
.filter(Matcher::matches)
.collect(Collectors.toMap(matcher -> matcher.group(1).trim().toLowerCase(), matcher -> {
final String value = matcher.group(2).trim();
if ("".equals(value)) {
return true;
} else if (-1 == value.indexOf(',')) {
return value;
}
return Arrays.asList(value.split(",")).stream().map(String::trim).collect(Collectors.toList());
}))
);
}
return result;
}
}</lang>
{{out}}
<pre>{seedsremoved=false, otherfamily=[Rhu Barber, Harry Barber], needspeeling=true, fullname=Foo Barber, favouritefruit=banana}</pre>
=={{header|JavaScript}}==
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