HW01

.github/workflows/gradle.yml

@@ -0,0 +1,16 @@
+name: CI
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 17
+        uses: actions/setup-java@v2
+        with:
+          java-version: 17
+          distribution: 'adopt'
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Test with Gradle
+        run: ./gradlew test

README.md

@@ -1 +1,19 @@
-# sd-homework
+# simplecli
+
+Implemented build-ins:
+- [cat](src/main/java/ru/itmo/simplecli/executor/constructors/Cat.java)
+- [echo](src/main/java/ru/itmo/simplecli/executor/constructors/Echo.java)
+- [exit](src/main/java/ru/itmo/simplecli/executor/constructors/Exit.java)
+- [grep](src/main/java/ru/itmo/simplecli/executor/constructors/Grep.java)
+- [pwd](src/main/java/ru/itmo/simplecli/executor/constructors/Pwd.java)
+- [wc](src/main/java/ru/itmo/simplecli/executor/constructors/WC.java)
+- [variable assignment](src/main/java/ru/itmo/simplecli/executor/constructors/Assignment.java)
+
+[Main](src/main/java/ru/itmo/simplecli/Main.java) runs loop until `exit` command is given.
+If the entered string contains incomplete quotes, it asks to continue typing.
+
+[Parser](src/main/java/ru/itmo/simplecli/executor/Parser.java) supports double and single quotes.
+It also performs substitution for values beginning with `$` if it is not surrounded by single quotes.
+
+The CLI [supports](src/main/java/ru/itmo/simplecli/executor/PipedCommand.java) a pipeline of commands, separated by a sign `|`,
+each command receives as input the output of the previous one.

build.gradle.kts

@@ -0,0 +1,26 @@
+plugins {
+    java
+}
+
+group = "org.example"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("commons-cli:commons-cli:1.5.0")
+    testImplementation("org.junit.jupiter:junit-jupiter-api:5.8.2")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+}
+
+tasks.test {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

settings.gradle.kts

@@ -0,0 +1,2 @@
+rootProject.name = "simplecli"
+

src/main/java/ru/itmo/simplecli/Main.java

@@ -0,0 +1,45 @@
+package ru.itmo.simplecli;
+
+import ru.itmo.simplecli.executor.*;
+
+import java.util.*;
+
+/**
+ * Entry point. Loop: read - parse - execute.
+ */
+public class Main {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        EnvironmentManager environment = new EnvironmentManager();
+        Parser parser = new Parser(environment);
+
+        while (true) {
+            System.out.print(">> ");
+            String input = scanner.nextLine();
+            if (input.trim().equals("")) {
+                continue;
+            }
+
+            parser.parse(input);
+            while (parser.hasUnclosedQuote()) {
+                System.out.print("> ");
+                input = input + scanner.nextLine();
+                parser.parse(input);
+            }
+
+            var command = PipedCommandFactory.construct(parser.getResult(), environment);
+            if (command == null) {
+                System.out.println("Can't construct command");
+                continue;
+            }
+
+            command.execute(null);
+            if (command.getEndStatus() == Executable.EndStatus.EXIT) {
+                break;
+            }
+            if (command.getOutput() != null) {
+                System.out.println(command.getOutput());
+            }
+        }
+    }
+}