VCS

.gitignore

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+build
+.idea

.travis.yml

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+language: java
+
+jdk:
+- oraclejdk8

build.gradle

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+group 'ru.spbau.shevchenko'
+version '1.0-SNAPSHOT'
+
+apply plugin: 'java'
+
+sourceCompatibility = 1.8
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testCompile group: 'junit', name: 'junit', version: '4.11'
+    compile group: 'org.jetbrains', name: 'annotations', version: '13.0'
+}

gradle/wrapper/gradle-wrapper.properties

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+#Tue Mar 21 12:37:10 MSK 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.13-bin.zip

settings.gradle

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+rootProject.name = 'VCS'
+rootProject.name = 'VCS'
+

src/main/java/console/Main.java

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+package console;
+
+import vcs.EmptyCommitMessageException;
+import vcs.NothingToCommitException;
+import vcs.VCS;
+import vcs.VCSException;
+
+import java.io.IOException;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        for (String arg : args) {
+            System.out.println(arg);
+        }
+        VCS vcs;
+        try {
+            vcs = new VCS();
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            return;
+        }
+        switch (args[0]) {
+            case "add": {
+                try {
+                    vcs.add(args[1]);
+                } catch (IOException e) {
+                    printException(e);
+                }
+                break;
+            }
+            case "commit": {
+                try {
+                    vcs.commit(args[1]);
+                } catch (Exception e) {
+                    printException(e);
+                }
+                break;
+            }
+            case "branch": {
+                if (args[1].equals("-d")) {
+                    try {
+                        vcs.deleteBranch(args[2]);
+                    } catch (VCSException | IOException e) {
+                        printException(e);
+                    }
+                }
+                else {
+                    try {
+                        vcs.createBranch(args[1]);
+                    } catch (Exception e) {
+                        printException(e);
+                    }
+                }
+                break;
+            }
+            case "log": {
+                try {
+                    List<String> log = vcs.log();
+                    for (String record : log) {
+                        System.out.print(record);
+                        System.out.println("\n---------------------\n");
+                    }
+                } catch (IOException | ClassNotFoundException e) {
+                    printException(e);
+                }
+                break;
+            }
+            case "checkout": {
+                try {
+                    vcs.checkout(args[1]);
+                } catch (Exception e) {
+                    printException(e);
+                }
+                break;
+            }
+            case "merge": {
+                try {
+                    List<String> conflicts = vcs.merge(args[1]);
+                    if (conflicts.isEmpty()) {
+                        System.out.println("Merged successfully");
+                    }
+                    else {
+                        System.out.println("Following files conflict:");
+                        conflicts.forEach(System.out::println);
+                    }
+                } catch (Exception e) {
+                    printException(e);
+                }
+            }
+        }
+    }
+
+    private static void printException(Exception e) {
+        System.out.println(e.getClass().toString() + " " + e.getMessage());
+    }
+}

src/main/java/console/package-info.java

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+/**
+ * Provides Main class for console interface.
+ */
+package console;