diff --git a/JavaCollections/JavaCollections/src/test/java/TestJavaCollections.java b/JavaCollections/JavaCollections/src/test/java/TestJavaCollections.java new file mode 100644 index 0000000..e52deb7 --- /dev/null +++ b/JavaCollections/JavaCollections/src/test/java/TestJavaCollections.java @@ -0,0 +1,33 @@ +import org.junit.jupiter.api.Test; + +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Queue; +import java.util.TreeSet; + +public class TestJavaCollections { + @Test + void test1() { + new ArrayList(); + new LinkedList(); + + List a = new ArrayList(); + a.addAll(Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9)); + a.removeAll(a.subList(2, 4)); + System.out.println(a); + + Map map = new HashMap(); + TreeSet set = new TreeSet(); + set.addAll(Arrays.asList(9,4,5,7,2,3)); + System.out.println(set); + + Queue dequeue = new ArrayDeque<>(); + Queue queue = new LinkedList<>(); + + } +} diff --git a/SpringDataResultSetProcessing/.gitignore b/SpringDataResultSetProcessing/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/SpringDataResultSetProcessing/.gitignore @@ -0,0 +1,37 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ diff --git a/SpringDataResultSetProcessing/build.gradle b/SpringDataResultSetProcessing/build.gradle new file mode 100644 index 0000000..0b82858 --- /dev/null +++ b/SpringDataResultSetProcessing/build.gradle @@ -0,0 +1,24 @@ +plugins { + id 'org.springframework.boot' version '2.6.6' + id 'io.spring.dependency-management' version '1.0.13.RELEASE' + id 'java' +} + +group = 'me.bvn13.test' +version = '0.0.1-SNAPSHOT' +sourceCompatibility = '17' + +repositories { + mavenCentral() +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-data-jdbc' + implementation 'org.springframework.boot:spring-boot-starter-data-jpa' + runtimeOnly 'com.h2database:h2' + testImplementation 'org.springframework.boot:spring-boot-starter-test' +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.jar b/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.jar differ diff --git a/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.properties b/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..8049c68 --- /dev/null +++ b/SpringDataResultSetProcessing/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/SpringDataResultSetProcessing/gradlew b/SpringDataResultSetProcessing/gradlew new file mode 100755 index 0000000..a69d9cb --- /dev/null +++ b/SpringDataResultSetProcessing/gradlew @@ -0,0 +1,240 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/SpringDataResultSetProcessing/gradlew.bat b/SpringDataResultSetProcessing/gradlew.bat new file mode 100644 index 0000000..f127cfd --- /dev/null +++ b/SpringDataResultSetProcessing/gradlew.bat @@ -0,0 +1,91 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/SpringDataResultSetProcessing/settings.gradle b/SpringDataResultSetProcessing/settings.gradle new file mode 100644 index 0000000..b20ecb8 --- /dev/null +++ b/SpringDataResultSetProcessing/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'SpringDataResultSetProcessing' diff --git a/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplication.java b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplication.java new file mode 100644 index 0000000..2fae6ac --- /dev/null +++ b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplication.java @@ -0,0 +1,13 @@ +package me.bvn13.test.spring.data.processing; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class SpringDataResultSetProcessingApplication { + + public static void main(String[] args) { + SpringApplication.run(SpringDataResultSetProcessingApplication.class, args); + } + +} diff --git a/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/Product.java b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/Product.java new file mode 100644 index 0000000..428ec43 --- /dev/null +++ b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/Product.java @@ -0,0 +1,47 @@ +package me.bvn13.test.spring.data.processing.model; + +import javax.persistence.Column; +import javax.persistence.Entity; +import javax.persistence.GeneratedValue; +import javax.persistence.GenerationType; +import javax.persistence.Id; +import javax.persistence.Table; + +@Entity +@Table(name = "product") +public class Product { + + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + @Column(name = "id") + private Integer id; + + @Column(name = "name") + private String name; + + public Product() { + } + + public Product(Integer id, String name) { + this.id = id; + this.name = name; + } + + public Integer getId() { + return id; + } + + public Product setId(Integer id) { + this.id = id; + return this; + } + + public String getName() { + return name; + } + + public Product setName(String name) { + this.name = name; + return this; + } +} diff --git a/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/ProductRepository.java b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/ProductRepository.java new file mode 100644 index 0000000..bbd780b --- /dev/null +++ b/SpringDataResultSetProcessing/src/main/java/me/bvn13/test/spring/data/processing/model/ProductRepository.java @@ -0,0 +1,8 @@ +package me.bvn13.test.spring.data.processing.model; + +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface ProductRepository extends JpaRepository { +} diff --git a/SpringDataResultSetProcessing/src/main/resources/application.yaml b/SpringDataResultSetProcessing/src/main/resources/application.yaml new file mode 100644 index 0000000..8b13789 --- /dev/null +++ b/SpringDataResultSetProcessing/src/main/resources/application.yaml @@ -0,0 +1 @@ + diff --git a/SpringDataResultSetProcessing/src/test/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplicationTests.java b/SpringDataResultSetProcessing/src/test/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplicationTests.java new file mode 100644 index 0000000..dbeae93 --- /dev/null +++ b/SpringDataResultSetProcessing/src/test/java/me/bvn13/test/spring/data/processing/SpringDataResultSetProcessingApplicationTests.java @@ -0,0 +1,82 @@ +package me.bvn13.test.spring.data.processing; + +import me.bvn13.test.spring.data.processing.model.Product; +import me.bvn13.test.spring.data.processing.model.ProductRepository; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.jdbc.core.JdbcTemplate; +import org.springframework.jdbc.core.namedparam.MapSqlParameterSource; +import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate; +import org.springframework.test.context.ActiveProfiles; +import org.springframework.transaction.annotation.Transactional; + +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.atomic.AtomicInteger; + +@Transactional +@ActiveProfiles("test") +@SpringBootTest +class SpringDataResultSetProcessingApplicationTests { + + @Autowired + ProductRepository productRepository; + @Autowired + JdbcTemplate jdbc; + @Autowired + NamedParameterJdbcTemplate namedJdbc; + + @Test + void testResultSet1() { + + productsExist(); + + List allProducts = jdbc.query("select * from product", + (ResultSet rse) -> { + List products = new ArrayList<>(); + while(rse.next()) { + products.add(map(rse)); + } + return products; + }); + + Assertions.assertEquals(2, allProducts.size()); + + } + + @Test + void testResultSet2() { + + productsExist(); + + List allProducts = namedJdbc.query("select * from product where id > :id", + new MapSqlParameterSource().addValue("id", 0), + (ResultSet rse) -> { + List products = new ArrayList<>(); + while(rse.next()) { + products.add(map(rse)); + } +// do { +// products.add(map(rse)); +// } while(rse.next()); + return products; + }); + + Assertions.assertEquals(2, allProducts.size()); + + } + + private void productsExist() { + productRepository.save(new Product(1, "product 1")); + productRepository.save(new Product(2, "product 2")); + } + + private Product map(ResultSet rse) throws SQLException { + return new Product(rse.getInt("id"), rse.getString("name")); + } + +} diff --git a/SpringDataResultSetProcessing/src/test/resources/application-test.yaml b/SpringDataResultSetProcessing/src/test/resources/application-test.yaml new file mode 100644 index 0000000..8c83371 --- /dev/null +++ b/SpringDataResultSetProcessing/src/test/resources/application-test.yaml @@ -0,0 +1,14 @@ +spring: + datasource: + url: 'jdbc:h2:mem:jpadb' + driverClassName: org.h2.Driver + username: sa + password: mypass + jpa: + database-platform: org.hibernate.dialect.H2Dialect + generate-ddl: true + show-sql: true + hibernate.ddl-auto: create-drop + properties.hibernate: + format_sql: true + generate_statistics: true \ No newline at end of file diff --git a/hexdec/hexdec/src/main/java/Hex2DecUnlimitedConverter.java b/hexdec/hexdec/src/main/java/Hex2DecUnlimitedConverter.java new file mode 100644 index 0000000..b73d664 --- /dev/null +++ b/hexdec/hexdec/src/main/java/Hex2DecUnlimitedConverter.java @@ -0,0 +1,41 @@ +import java.math.BigDecimal; +import java.math.BigInteger; + +public class Hex2DecUnlimitedConverter { + public BigInteger convert(String hex) { + BigInteger result = BigInteger.ZERO; + for (int pos = hex.length() - 1, pow = 0; pos >= 0; pos--, pow++) { + int value = take(hex.charAt(pos)); + result = result.add(BigInteger.valueOf(value).multiply(BigInteger.valueOf(16L).pow(pow))); + } + return result; + } + + private int take(char digit) { + return switch (digit) { + case '0' -> 0; + case '1' -> 1; + case '2' -> 2; + case '3' -> 3; + case '4' -> 4; + case '5' -> 5; + case '6' -> 6; + case '7' -> 7; + case '8' -> 8; + case '9' -> 9; + case 'A' -> 10; + case 'a' -> 10; + case 'B' -> 11; + case 'b' -> 11; + case 'C' -> 12; + case 'c' -> 12; + case 'D' -> 13; + case 'd' -> 13; + case 'E' -> 14; + case 'e' -> 14; + case 'F' -> 15; + case 'f' -> 15; + default -> throw new IllegalArgumentException("Not a HEX: " + digit); + }; + } +} diff --git a/hexdec/hexdec/src/test/java/Hex2DecUnlimitedConverterTest.java b/hexdec/hexdec/src/test/java/Hex2DecUnlimitedConverterTest.java new file mode 100644 index 0000000..e1adad9 --- /dev/null +++ b/hexdec/hexdec/src/test/java/Hex2DecUnlimitedConverterTest.java @@ -0,0 +1,13 @@ +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +import java.math.BigInteger; + +public class Hex2DecUnlimitedConverterTest { + @Test + void test() { + Hex2DecUnlimitedConverter converter = new Hex2DecUnlimitedConverter(); + Assertions.assertEquals(BigInteger.valueOf(9223372036854775807L), converter.convert("7fffffffffffffff")); + Assertions.assertEquals(new BigInteger("170141183460469231722463931679029329919"), converter.convert("7FFFFFFFFFFFFFFF7FFFFFFFFFFFFFFF")); + } +} diff --git a/log-sorter/log-sorter/build.gradle b/log-sorter/log-sorter/build.gradle new file mode 100644 index 0000000..505b893 --- /dev/null +++ b/log-sorter/log-sorter/build.gradle @@ -0,0 +1,34 @@ +plugins { + id 'java' + id "application" +} + +apply plugin : "java" +ext { + javaMainClass = "me.bvn13.logsorter.LogSorter" +} +application { + mainClassName = javaMainClass +} +jar { + manifest { + attributes 'Main-Class': application.mainClass + } +} + +group 'org.example' +version '1.0-SNAPSHOT' + +repositories { + mavenCentral() +} + + +dependencies { + testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1' + testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1' +} + +test { + useJUnitPlatform() +} \ No newline at end of file diff --git a/log-sorter/log-sorter/gradle/wrapper/gradle-wrapper.properties b/log-sorter/log-sorter/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..41dfb87 --- /dev/null +++ b/log-sorter/log-sorter/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/log-sorter/log-sorter/gradlew b/log-sorter/log-sorter/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/log-sorter/log-sorter/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/log-sorter/log-sorter/gradlew.bat b/log-sorter/log-sorter/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/log-sorter/log-sorter/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/log-sorter/log-sorter/settings.gradle b/log-sorter/log-sorter/settings.gradle new file mode 100644 index 0000000..2c7f72b --- /dev/null +++ b/log-sorter/log-sorter/settings.gradle @@ -0,0 +1,2 @@ +rootProject.name = 'log-sorter' + diff --git a/log-sorter/log-sorter/src/main/java/me/bvn13/logsorter/LogSorter.java b/log-sorter/log-sorter/src/main/java/me/bvn13/logsorter/LogSorter.java new file mode 100644 index 0000000..b1acd98 --- /dev/null +++ b/log-sorter/log-sorter/src/main/java/me/bvn13/logsorter/LogSorter.java @@ -0,0 +1,86 @@ +package me.bvn13.logsorter; + +import java.io.File; +import java.io.IOException; +import java.nio.file.Files; +import java.util.List; +import java.util.Set; +import java.util.TreeSet; + +public class LogSorter { + + public static void main(String[] args) { + int timestampLength; + try { + timestampLength = Integer.parseInt(args[0]) - 1; + } catch (Exception e) { + System.out.println("java -jar file.jar ... "); + System.exit(1); + throw new RuntimeException("Exit"); + } + final Set logs = new TreeSet<>(); + int maxLen = 0; + for (int i = 1; i < args.length; i++) { + String filename = args[i]; + maxLen = Math.max(maxLen, filename.length()); + File file = new File(filename); + List lines; + try { + lines = Files.readAllLines(file.toPath()); + } catch (IOException e) { + System.err.println(e.getMessage()); + continue; + } + String previousLine = null; + for (String line : lines) { + if (line.indexOf(" ") != timestampLength) { + previousLine = append(previousLine, line); + } else { + if (previousLine != null) { + logs.add(new LogEntry(previousLine, filename)); + } + previousLine = line; + } + } + if (previousLine != null) { + logs.add(new LogEntry(previousLine, filename)); + } + } + String dummy = createDummy(maxLen); + for (LogEntry entry : logs) { + String filename = String.format("%s%s", entry.filename, dummy).substring(0, maxLen); + String lines[] = entry.logMessage.split("\n"); + for (String line : lines) { + System.out.println(filename + ": " + line); + } + } + } + + private static String createDummy(int length) { + return " ".repeat(Math.max(0, length)); + } + + private static String append(String a, String b) { + StringBuilder sb = new StringBuilder(); + if (a != null) { + sb.append(a).append("\n"); + } + sb.append(b); + return sb.toString(); + } + + private static class LogEntry implements Comparable { + final String logMessage; + final String filename; + + public LogEntry(String logMessage, String filename) { + this.logMessage = logMessage; + this.filename = filename; + } + + @Override + public int compareTo(LogEntry o) { + return this.logMessage.compareTo(o.logMessage); + } + } +}