1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 package jdk.jpackage.test;

    24 

    25 import java.io.IOException;

    26 import java.nio.file.Files;

    27 import java.nio.file.Path;

    28 import java.util.Collections;

    29 import java.util.HashMap;

    30 import java.util.Map;

    31 import java.util.Objects;

    32 import java.util.regex.Matcher;

    33 import java.util.regex.Pattern;

    34 

    35 

    36 public final class CfgFile {

    37     public String getValue(String section, String key) {

    38         Objects.requireNonNull(section);

    39         Objects.requireNonNull(key);

    40 

    41         Map<String, String> entries = data.get(section);

    42         TKit.assertTrue(entries != null, String.format(

    43                 "Check section [%s] is found in [%s] cfg file", section, id));

    44 

    45         String value = entries.get(key);

    46         TKit.assertNotNull(value, String.format(

    47                 "Check key [%s] is found in [%s] section of [%s] cfg file", key,

    48                 section, id));

    49 

    50         return value;

    51     }

    52 

    53     private CfgFile(Map<String, Map<String, String>> data, String id) {

    54         this.data = data;

    55         this.id = id;

    56     }

    57 

    58     public static CfgFile readFromFile(Path path) throws IOException {

    59         TKit.trace(String.format("Read [%s] jpackage cfg file", path));

    60 

    61         final Pattern sectionBeginRegex = Pattern.compile( "\\s*\\[([^]]*)\\]\\s*");

    62         final Pattern keyRegex = Pattern.compile( "\\s*([^=]*)=(.*)" );

    63 

    64         Map<String, Map<String, String>> result = new HashMap<>();

    65 

    66         String currentSectionName = null;

    67         Map<String, String> currentSection = new HashMap<>();

    68         for (String line : Files.readAllLines(path)) {

    69             Matcher matcher = sectionBeginRegex.matcher(line);

    70             if (matcher.find()) {

    71                 if (currentSectionName != null) {

    72                     result.put(currentSectionName, Collections.unmodifiableMap(

    73                             new HashMap<>(currentSection)));

    74                 }

    75                 currentSectionName = matcher.group(1);

    76                 currentSection.clear();

    77                 continue;

    78             }

    79 

    80             matcher = keyRegex.matcher(line);

    81             if (matcher.find()) {

    82                 currentSection.put(matcher.group(1), matcher.group(2));

    83                 continue;

    84             }

    85         }

    86 

    87         if (!currentSection.isEmpty()) {

    88             result.put("", Collections.unmodifiableMap(currentSection));

    89         }

    90 

    91         return new CfgFile(Collections.unmodifiableMap(result), path.toString());

    92     }

    93 

    94     private final Map<String, Map<String, String>> data;

    95     private final String id;

    96 }