Fix changelog and version parsing

CHANGELOG.md

@@ -12,6 +12,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 ### Added
 
 - We added an extra option when right-clicking an entry in the Entry List to copy either the DOI or the DOI url.
+- We improved the version check to take also beta version into account and now redirect to the right changelog for the version
 - We added two new web and fulltext fetchers: SemanticScholar and ResearchGate
 
 ### Changed
@@ -34,6 +35,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We fixed an issue when reading non-UTF-8 encoded. When no encoding header is present, the encoding is now detected from the file content (and the preference option is disregarded) [#8417](https://github.com/JabRef/jabref/issues/8417)
 - We fixed an issue where pasting a URL was replacing + signs by spaces making the URL unreachable. [#8448](https://github.com/JabRef/jabref/issues/8448)
 - We fixed an issue where creating subsidiary files from aux files created with some versions of biblatex would produce incorrect results. [#8513](https://github.com/JabRef/jabref/issues/8513)
+- We fixed an issue where opening the changelog from withing JabRef led to a 404 error [#8563](https://github.com/JabRef/jabref/issues/8563)
 - We fixed an issue where not all found unlinked local files were imported correctly due to some race condition. [#8444](https://github.com/JabRef/jabref/issues/8444)
 
 ### Removed

src/main/java/org/jabref/gui/JabRefFrame.java

@@ -565,7 +565,7 @@ public LibraryTab getLibraryTabAt(int i) {
      */
     public List<LibraryTab> getLibraryTabs() {
         return tabbedPane.getTabs().stream()
-            .filter(LibraryTab.class::isInstance)
+                         .filter(LibraryTab.class::isInstance)
                          .map(LibraryTab.class::cast)
                          .collect(Collectors.toList());
     }
@@ -892,7 +892,7 @@ private MenuBar createMenu() {
                         new SeparatorMenuItem(),
 
                         factory.createMenuItem(StandardActions.OPEN_DEV_VERSION_LINK, new OpenBrowserAction("https://builds.jabref.org/master/")),
-                        factory.createMenuItem(StandardActions.OPEN_CHANGELOG, new OpenBrowserAction("https://github.com/JabRef/jabref/blob/master/CHANGELOG.md"))
+                        factory.createMenuItem(StandardActions.OPEN_CHANGELOG, new OpenBrowserAction("https://github.com/JabRef/jabref/blob/main/CHANGELOG.md"))
                 ),
                 factory.createMenuItem(StandardActions.ABOUT, new AboutAction())
         );

src/main/java/org/jabref/logic/util/Version.java

@@ -27,7 +27,7 @@ public class Version {
 
     private static final Version UNKNOWN_VERSION = new Version();
 
-    private final static Pattern VERSION_PATTERN = Pattern.compile("(?<major>\\d+)(\\.(?<minor>\\d+))?(\\.(?<patch>\\d+))?(?<stage>-alpha|-beta)?(?<dev>-?dev)?.*");
+    private final static Pattern VERSION_PATTERN = Pattern.compile("(?<major>\\d+)(\\.(?<minor>\\d+))?(\\.(?<patch>\\d+))?(?<stage>-alpha|-beta)?(?<num>\\d+)?(?<dev>-?dev)?.*");
     private final static Pattern CI_SUFFIX_PATTERN = Pattern.compile("-ci\\.\\d+");
 
     private static final String JABREF_GITHUB_RELEASES = "https://api.github.com/repos/JabRef/JabRef/releases";
@@ -37,6 +37,7 @@ public class Version {
     private int minor = -1;
     private int patch = -1;
     private DevelopmentStage developmentStage = DevelopmentStage.UNKNOWN;
+    private int developmentNum = -1;
     private boolean isDevelopmentVersion;
 
     /**
@@ -75,6 +76,10 @@ public static Version parse(String version) {
 
                 String versionStageString = matcher.group("stage");
                 parsedVersion.developmentStage = versionStageString == null ? DevelopmentStage.STABLE : DevelopmentStage.parse(versionStageString);
+
+                String stageNumString = matcher.group("num");
+                parsedVersion.developmentNum = stageNumString == null ? 0 : Integer.parseInt(stageNumString);
+
                 parsedVersion.isDevelopmentVersion = matcher.group("dev") != null;
             } catch (NumberFormatException e) {
                 LOGGER.warn("Invalid version string used: " + version, e);
@@ -138,8 +143,13 @@ public boolean isNewerThan(Version otherVersion) {
                     if (this.developmentStage.isMoreStableThan(otherVersion.developmentStage)) {
                         return true;
                     } else if (this.developmentStage == otherVersion.developmentStage) {
-                        // if the stage is equal check if this version is in development and the other is not
-                        return !this.isDevelopmentVersion && otherVersion.isDevelopmentVersion;
+                        // if the development stage are equal compare the development number
+                        if (this.getDevelopmentNum() > otherVersion.getDevelopmentNum()) {
+                            return true;
+                        } else if (this.getDevelopmentNum() == otherVersion.getDevelopmentNum()) {
+                            // if the stage is equal check if this version is in development and the other is not
+                            return !this.isDevelopmentVersion && otherVersion.isDevelopmentVersion;
+                        }
                     }
                 }
             }
@@ -148,8 +158,7 @@ public boolean isNewerThan(Version otherVersion) {
     }
 
     /**
-     * Checks if this version should be updated to one of the given ones.
-     * Ignoring the other Version if this one is Stable and the other one is not.
+     * Checks if this version should be updated to one of the given ones. Ignoring the other Version if this one is Stable and the other one is not.
      *
      * @return The version this one should be updated to, or an empty Optional
      */
@@ -165,8 +174,7 @@ public Optional<Version> shouldBeUpdatedTo(List<Version> availableVersions) {
     }
 
     /**
-     * Checks if this version should be updated to the given one.
-     * Ignoring the other Version if this one is Stable and the other one is not.
+     * Checks if this version should be updated to the given one. Ignoring the other Version if this one is Stable and the other one is not.
      *
      * @return True if this version should be updated to the given one
      */
@@ -197,6 +205,10 @@ public int getPatch() {
         return patch;
     }
 
+    public int getDevelopmentNum() {
+        return developmentNum;
+    }
+
     public boolean isDevelopmentVersion() {
         return isDevelopmentVersion;
     }
@@ -206,7 +218,7 @@ public boolean isDevelopmentVersion() {
      */
     public String getChangelogUrl() {
         if (isDevelopmentVersion) {
-            return "https://github.com/JabRef/jabref/blob/master/CHANGELOG.md#unreleased";
+            return "https://github.com/JabRef/jabref/blob/main/CHANGELOG.md#unreleased";
         } else {
             StringBuilder changelogLink = new StringBuilder()
                     .append("https://github.com/JabRef/jabref/blob/v")
@@ -221,8 +233,14 @@ public String getChangelogUrl() {
             }
 
             changelogLink
-                    .append(this.developmentStage.stage)
-                    .append("/CHANGELOG.md");
+                    .append(this.developmentStage.stage);
+
+            if (this.getDevelopmentNum() != 0) {
+                changelogLink
+                        .append(this.getDevelopmentNum());
+            }
+
+            changelogLink.append("/CHANGELOG.md");
 
             return changelogLink.toString();
         }

src/test/java/org/jabref/logic/util/VersionTest.java

@@ -193,6 +193,20 @@ public void versionNotNewerPatch() {
         assertFalse(older.isNewerThan(newer));
     }
 
+    @Test
+    public void versionNewerDevelopmentNumber() {
+        Version older = Version.parse("4.2-beta1");
+        Version newer = Version.parse("4.2-beta2");
+        assertFalse(older.isNewerThan(newer));
+    }
+
+    @Test
+    public void versionNotNewerThanSameVersionWithBeta() {
+        Version version1 = Version.parse("4.2-beta2");
+        Version version2 = Version.parse("4.2-beta2");
+        assertFalse(version2.isNewerThan(version1));
+    }
+
     @Test
     public void equalVersionsNotNewer() {
         Version version1 = Version.parse("4.2.2");
@@ -203,13 +217,25 @@ public void equalVersionsNotNewer() {
     @Test
     public void changelogOfDevelopmentVersionWithDash() {
         Version version = Version.parse("4.0-dev");
-        assertEquals("https://github.com/JabRef/jabref/blob/master/CHANGELOG.md#unreleased", version.getChangelogUrl());
+        assertEquals("https://github.com/JabRef/jabref/blob/main/CHANGELOG.md#unreleased", version.getChangelogUrl());
     }
 
     @Test
     public void changelogOfDevelopmentVersionWithoutDash() {
         Version version = Version.parse("3.7dev");
-        assertEquals("https://github.com/JabRef/jabref/blob/master/CHANGELOG.md#unreleased", version.getChangelogUrl());
+        assertEquals("https://github.com/JabRef/jabref/blob/main/CHANGELOG.md#unreleased", version.getChangelogUrl());
+    }
+
+    @Test
+    public void changelogOfDevelopmentStageSubNumber() {
+        Version version1 = Version.parse("4.0");
+        Version version2 = Version.parse("4.0-beta");
+        Version version3 = Version.parse("4.0-beta2");
+        Version version4 = Version.parse("4.0-beta3");
+        assertEquals("https://github.com/JabRef/jabref/blob/v4.0/CHANGELOG.md", version1.getChangelogUrl());
+        assertEquals("https://github.com/JabRef/jabref/blob/v4.0-beta/CHANGELOG.md", version2.getChangelogUrl());
+        assertEquals("https://github.com/JabRef/jabref/blob/v4.0-beta2/CHANGELOG.md", version3.getChangelogUrl());
+        assertEquals("https://github.com/JabRef/jabref/blob/v4.0-beta3/CHANGELOG.md", version4.getChangelogUrl());
     }
 
     @Test