Initial commit

.gitignore

@@ -0,0 +1,3 @@
+.gradle
+build
+.idea

build.gradle.kts

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+plugins {
+    kotlin("multiplatform") version "1.3.70-eap-184"
+}
+
+group = "nl.astraeus"
+version = "0.1.0-SNAPSHOT"
+
+repositories {
+    maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap") }
+    mavenCentral()
+}
+
+kotlin {
+    /* Targets configuration omitted. 
+    *  To find out how to configure the targets, please follow the link:
+    *  https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html#setting-up-targets */
+    jvm()
+    js {
+    }
+
+    sourceSets {
+        val commonMain by getting {
+            dependencies {
+                implementation(kotlin("stdlib-common"))
+            }
+        }
+        val commonTest by getting {
+            dependencies {
+                implementation(kotlin("test-common"))
+                implementation(kotlin("test-annotations-common"))
+            }
+        }
+        val jsMain by getting {
+            dependencies {
+                implementation(kotlin("stdlib-js"))
+            }
+        }
+        val jsTest by getting {
+            dependencies {
+                implementation(kotlin("test-js"))
+                implementation(kotlin("test-annotations-js"))
+            }
+        }
+        val jvmMain by getting {
+            dependencies {
+                implementation(kotlin("stdlib-jdk8"))
+            }
+        }
+    }
+}

gradle.properties

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+kotlin.code.style=official

gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

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+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or 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 UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

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+@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 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 init
+
+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 init
+
+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
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+: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 %CMD_LINE_ARGS%
+
+: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

settings.gradle.kts

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+pluginManagement {
+    repositories {
+        maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap") }
+
+        mavenCentral()
+
+        maven { setUrl("https://plugins.gradle.org/m2/") }
+    }
+}
+rootProject.name = "kotlin-css-generator"
+

src/commonMain/kotlin/nl/astraeus/css/Color.kt

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+package nl.astraeus.css
+
+fun rgb(red: Int, green: Int, blue: Int): Color = RGBColor(red, green, blue)
+fun rgba(red: Int, green: Int, blue: Int, alpha: Double): Color = RGBAColor(red, green, blue, alpha)
+fun hsl(hue: Int, saturation: Int, lightness: Int): Color = HSLColor(hue, saturation, lightness)
+fun hsla(hue: Int, saturation: Int, lightness: Int, alpha: Double): Color = HSLAColor(hue, saturation, lightness, alpha)
+
+open class Color : CssProperty() {
+
+    override fun css(): String = "#xxxxxx"
+
+}
+
+class RGBColor(
+    val red: Int,
+    val green: Int,
+    val blue: Int
+) : Color() {
+
+    override fun css(): String = "rgb($red, $green, $blue)"
+
+}
+
+class RGBAColor(
+    val red: Int,
+    val green: Int,
+    val blue: Int,
+    val alpha: Double
+) : Color() {
+
+    override fun css(): String = "rgba($red, $green, $blue, $alpha)"
+
+}
+
+class HSLColor(
+    val hue: Int,
+    val saturation: Int,
+    val lightness: Int
+) : Color() {
+
+    override fun css(): String = "hsl($hue, $saturation, $lightness)"
+
+}
+
+class HSLAColor(
+    val hue: Int,
+    val saturation: Int,
+    val lightness: Int,
+    val alpha: Double
+) : Color() {
+
+    override fun css(): String = "hsla($hue, $saturation, $lightness, $alpha)"
+
+}

src/commonMain/kotlin/nl/astraeus/css/CssBuilder.kt

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+package nl.astraeus.css
+
+@DslMarker
+annotation class CssTagMarker
+
+@CssTagMarker
+open class Style(
+    var color: Color? = null,
+    var backgroundColor: Color? = null,
+    var left: Measurement? = null,
+    var top: Measurement? = null,
+    var width: Measurement? = null,
+    var height: Measurement? = null,
+    var fontFamily: PlainProperty? = null,
+    var fontSize: FontSize? = null
+) {
+
+    fun getMapping() = mapOf(
+        "color" to color,
+        "background-color" to backgroundColor,
+        "left" to left,
+        "top" to top,
+        "width" to width,
+        "height" to height,
+        "font-family" to fontFamily,
+        "font-size" to fontSize
+    )
+
+    fun propertyCss(indent: String, name: String, prop: CssProperty?): String = if (prop != null) {
+        "$indent$name: ${prop.css()};\n"
+    } else {
+        ""
+    }
+
+    fun generatePropertyCss(indent: String): String {
+        val builder = StringBuilder()
+
+        for ((name, prop) in getMapping()) {
+            builder.append(propertyCss(indent, name, prop))
+        }
+
+        return builder.toString()
+    }
+
+}
+
+@CssTagMarker
+open class StyleDefinition : Style() {
+    val definitions: MutableMap<String, StyleDefinition> = mutableMapOf()
+    val includes: MutableList<Style> = mutableListOf()
+
+    fun css(selector: String, style: StyleDefinition.() -> Unit) {
+        val styleValue = StyleDefinition()
+
+        style(styleValue)
+
+        definitions[selector] = styleValue
+    }
+
+    fun include(style: Style) {
+        includes.add(style)
+    }
+
+    open fun generateCss(namespace: String = "", indent: String = "  "): String {
+        val builder = StringBuilder()
+
+        for ((name, prop) in definitions) {
+            val css = StringBuilder()
+            css.append(prop.generatePropertyCss(indent))
+            for (style in prop.includes) {
+                css.append(style.generatePropertyCss(indent))
+            }
+            if (css.isNotBlank()) {
+                builder.append("$namespace $name".trim())
+                builder.append(" {\n")
+                builder.append(css)
+                builder.append("}\n\n")
+            }
+
+            builder.append(prop.generateCss( "${namespace} $name".trim(), indent))
+        }
+
+        return builder.toString()
+    }
+
+}
+
+fun css(definition: Style.() -> Unit): Style {
+    val css = Style()
+
+    definition(css)
+
+    return css
+}
+
+class CssBuilder {
+    var definition: StyleDefinition = StyleDefinition()
+
+    fun style(definition: StyleDefinition.() -> Unit) {
+        definition(this.definition)
+    }
+
+    fun getCss(): String = definition.generateCss()
+
+    override fun toString(): String {
+        return "CssBuilder(${definition.generateCss()})"
+    }
+}

src/commonMain/kotlin/nl/astraeus/css/CssProperty.kt

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+package nl.astraeus.css
+
+abstract class CssProperty {
+
+    abstract fun css(): String
+
+}
+
+fun plain(value: String) = PlainProperty(value)
+
+class PlainProperty(
+    val value: String
+): CssProperty() {
+
+    override fun css(): String = value
+
+}

src/commonMain/kotlin/nl/astraeus/css/Measurement.kt

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+package nl.astraeus.css
+
+fun px(nr: Int): Measurement = Measurement(MeasurementType.PX, nr)
+fun em(nr: Int): Measurement = Measurement(MeasurementType.EM, nr)
+fun perc(nr: Int): Measurement = Measurement(MeasurementType.PERCENTAGE, nr)
+
+enum class MeasurementType {
+    PX,
+    EM,
+    PERCENTAGE,
+    OTHER
+}
+
+open class Measurement(
+    val type: MeasurementType,
+    val intValue: Int = 0,
+    val stringValue: String = ""
+) : CssProperty() {
+
+    override fun css(): String = when(type) {
+        MeasurementType.PX -> {
+            "${intValue}px"
+        }
+        MeasurementType.EM -> {
+            "${intValue}em"
+        }
+        MeasurementType.PERCENTAGE -> {
+            "${stringValue}%"
+        }
+        else -> {
+            error("Unhandled type $type")
+        }
+    }
+
+}
+
+enum class FontSizeType {
+    PX,
+    EM,
+    PERCENTAGE,
+
+}
+
+class FontSize(
+    val fontType: FontSizeType,
+    intValue: Int = 0,
+    stringValue: String = ""
+) : Measurement(
+    MeasurementType.PX,
+    intValue,
+    stringValue
+) {
+    override fun css(): String = "12px"
+}

src/commonTest/kotlin/nl/astraeus/css/TestCssBuilder.kt

@@ -0,0 +1,27 @@
+package nl.astraeus.css
+
+import kotlin.test.Test
+
+object TestCssBuilder {
+
+    @Test
+    fun testBuilder() {
+        val css = CssBuilder()
+
+        css.style {
+
+            css(".test") {
+                top = px(10)
+                left = em(5)
+                backgroundColor = rgba(255, 255, 255, 0.75)
+
+                sel("> a") {
+                    color = hsl(200, 50, 50)
+                }
+            }
+        }
+
+        println(css)
+    }
+
+}

src/jvmMain/kotlin/nl/astraeus/css/Test.kt

@@ -0,0 +1,72 @@
+package nl.astraeus.css
+
+class StyleBase(
+    val mainColor: Color = hsl(128, 50, 50),
+    val mainBackgroundColor: Color = hsl(64, 50, 50),
+    val mainFont: PlainProperty = plain("Arial")
+)
+
+private fun StyleDefinition.sizePX(
+    left: Int,
+    top: Int,
+    width: Int,
+    height: Int
+) {
+    this@sizePX.top = px(top)
+    this@sizePX.left = px(left)
+    this@sizePX.width = px(width)
+    this@sizePX.height = px(height)
+}
+
+private fun generateCss(
+    base: StyleBase
+): String {
+    val css = CssBuilder()
+
+    css.style {
+        css("body") {
+            fontFamily = base.mainFont
+            color = base.mainColor
+            backgroundColor = base.mainBackgroundColor
+        }
+
+        css(".test") {
+            top = px(10)
+            left = em(5)
+            backgroundColor = rgba(255, 255, 255, 0.75)
+
+            css("> a") {
+                color = hsl(200, 50, 50)
+            }
+        }
+
+        css("nav") {
+            css("ul") {
+                color = hsl(0, 100, 25)
+                backgroundColor = base.mainBackgroundColor
+            }
+            css("li") {
+                sizePX(25, 25, 200, 200)
+
+                css("a") {
+                    width = px(725)
+                    backgroundColor = base.mainBackgroundColor
+                }
+            }
+        }
+    }
+
+    return css.getCss()
+}
+
+fun main() {
+    val css1 = generateCss(StyleBase())
+    val css2 = generateCss(StyleBase(
+        hsl(32, 40, 50),
+        hsl(64, 60, 35),
+        plain("Courier")
+    ))
+
+    println(css1)
+    println(css2)
+}