feat(lines-scanner): initial commit

This commit is contained in:
dancingCycle 2022-03-02 10:21:29 +01:00
parent bc72cef545
commit f1250d6b5a
3 changed files with 183 additions and 0 deletions

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lines-scanner/.gitignore vendored Normal file
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# Files
.classpath
.externalToolBuilders
.gradle
.project
.pydevproject
.settings
.sonar
*~
*.ipr
*.iml
*.iws
*.swp
*.DS_Store
*.snap.debug
dependency-reduced-pom.xml
# Directories
.idea/
.run/
.venv/
_site/
build/
dist/
docs/_build/
gen-java/
gen-javabean/
gen-py/
node_modules/
target/

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lines-scanner/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<name>lines_scanner</name>
<description>description</description>
<url>https://swingbe.de</url>
<groupId>de.swingbe</groupId>
<artifactId>lines_scanner</artifactId>
<version>0.0.1</version>
<packaging>jar</packaging>
<licenses>
<license>
<name>GNU General Public License</name>
<url>https://www.gnu.org/licenses/gpl-3.0.txt</url>
</license>
</licenses>
<scm>
<url>https://github.com/Software-Ingenieur-Begerad/sandbox-java</url>
</scm>
<properties>
<!-- Other properties -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<!-- Target Java versions -->
<release>11</release>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<!-- exclude signatures from merged JAR to avoid invalid signature messages -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<!-- The shaded JAR will not be the main artifact for the project, it will be attached
for deployment in the way source and docs are. -->
<shadedArtifactAttached>true
</shadedArtifactAttached>
<shadedClassifierName>shaded</shadedClassifierName>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>de.swingbe.lines_scanner.Main
</Main-Class>
</manifestEntries>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

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package de.swingbe.lines_scanner;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Scanner;
public class Main {
static void usage() {
System.err.println("usage: java Main file");
System.exit(-1);
}
private static void lines_scanner(Path pathFile) {
FileInputStream inputStream = null;
Scanner sc = null;
try {
inputStream = new FileInputStream(pathFile.toString());
sc = new Scanner(inputStream, StandardCharsets.UTF_8);
int count = 0;
while (sc.hasNextLine()) {
String line = sc.nextLine();
// System.out.println(line);
count++;
}
System.out.println("count: " + count);
// note that Scanner suppresses exceptions
if (sc.ioException() != null) {
throw sc.ioException();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (sc != null) {
sc.close();
}
}
}
public static void main(String[] args) {
System.out.println("Hello world!");
// parse arguments
if (args.length == 0 || args.length > 2) usage();
int fileArg = 0;
// get lines count
Path pathFile = Paths.get(args[fileArg]);
System.out.println("pathFile: " + pathFile);
lines_scanner(pathFile);
return;
}
}