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build.main.kts
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build.main.kts
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// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
@file:Repository("https://repo1.maven.org/maven2/")
@file:DependsOn("net.sourceforge.plantuml:plantuml:1.2021.6")
import net.sourceforge.plantuml.FileFormat
import net.sourceforge.plantuml.FileFormatOption
import net.sourceforge.plantuml.SourceFileReader
import net.sourceforge.plantuml.error.PSystemError
import org.w3c.dom.*
import java.nio.file.Files
import java.nio.file.Path
import javax.xml.parsers.DocumentBuilderFactory
import javax.xml.transform.OutputKeys
import javax.xml.transform.Transformer
import javax.xml.transform.TransformerFactory
import javax.xml.transform.dom.DOMSource
import javax.xml.transform.stream.StreamResult
import javax.xml.xpath.XPathConstants
import javax.xml.xpath.XPathExpression
import javax.xml.xpath.XPathFactory
val defaultFontSize = "14"
val noteBackgroundColor = "#EBEBEB"
var start = System.currentTimeMillis()
val outDir: Path = Path.of("out").toAbsolutePath()
Files.createDirectories(outDir)
val svgFileFormat = FileFormatOption(FileFormat.SVG, /* withMetadata = */ false)
Files.newDirectoryStream(Path.of(".").toAbsolutePath(), "*.puml").use { inFiles ->
for (inFile in inFiles) {
if (inFile.fileName.toString().contains("-theme.")) {
continue
}
val sourceFileReader = SourceFileReader(inFile.toFile(), outDir.toFile(), svgFileFormat)
val result = sourceFileReader.generatedImages
if (result.size == 0) {
System.err.println("warning: no image in $inFile")
continue
}
for (s in sourceFileReader.blocks) {
val diagram = s.diagram
if (diagram is PSystemError) {
System.err.println("status=ERROR")
System.err.println("lineNumber=" + diagram.lineLocation.position)
for (error in diagram.errorsUml) {
System.err.println("label=" + error.error)
}
}
}
}
}
println("Generate SVG in: ${System.currentTimeMillis() - start} ms")
start = System.currentTimeMillis()
val dbFactory: DocumentBuilderFactory = DocumentBuilderFactory.newDefaultInstance()
val xPathFactory: XPathFactory = XPathFactory.newInstance()
val textFillXPath: XPathExpression = xPathFactory.newXPath().compile("/svg/g/text")
val rectFillXPath: XPathExpression = xPathFactory.newXPath().compile("/svg/g/rect")
val lineStyleXPath: XPathExpression = xPathFactory.newXPath().compile("/svg/g/line")
val pathFillXPath: XPathExpression = xPathFactory.newXPath().compile("/svg/g/path")
Files.newDirectoryStream(outDir, "*.svg").use { svgFiles ->
for (svgFile in svgFiles) {
transformSvg(svgFile)
}
}
println("Transform SVG in: ${System.currentTimeMillis() - start} ms")
fun transformSvg(svgFile: Path) {
val dBuilder = dbFactory.newDocumentBuilder()
val content = Files.readString(svgFile)
val document = dBuilder.parse(content.byteInputStream())
if (!content.contains("xlink:")) {
document.documentElement.removeAttribute("xmlns:xlink")
}
val classNameToBuilder = linkedMapOf<String, String>()
val textNodes = textFillXPath.evaluate(document, XPathConstants.NODESET) as NodeList
for (i in 0 until textNodes.length) {
val element = textNodes.item(i) as Element
val fill = element.getAttributeNode("fill") ?: continue
if (element.getAttribute("lengthAdjust") == "spacing") {
element.removeAttribute("lengthAdjust")
}
if (fill.value == "#000000") {
element.removeAttributeNode(fill)
}
if (hasOnlyAttributes(element.attributes, "font-", listOf("font-family", "font-size"))) {
extractFontStyle(element, classNameToBuilder)
}
}
val rectNodes = rectFillXPath.evaluate(document, XPathConstants.NODESET) as NodeList
for (i in 0 until rectNodes.length) {
val element = rectNodes.item(i) as Element
val style = element.getAttributeNode("style") ?: continue
val fill = element.getAttributeNode("fill") ?: continue
if (style.value == "stroke:#383838;stroke-width:1.0;") {
applyBackgroundAndBorder("process", element, style, fill, classNameToBuilder)
}
else if (style.value == "stroke:#FEFECE;stroke-width:1.5;") {
applyBackgroundAndBorder("node", element, style, fill, classNameToBuilder)
}
}
val lineNodes = lineStyleXPath.evaluate(document, XPathConstants.NODESET) as NodeList
for (i in 0 until lineNodes.length) {
val element = lineNodes.item(i) as Element
val style = element.getAttributeNode("style") ?: continue
if (style.value == "stroke:#A80036;stroke-width:1.0;") {
classNameToBuilder.computeIfAbsent("arrow") {
"""
${style.value}
""".trimIndent()
}
element.removeAttributeNode(style)
element.setAttribute("class", "arrow")
}
}
val pathNodes = pathFillXPath.evaluate(document, XPathConstants.NODESET) as NodeList
for (i in 0 until pathNodes.length) {
val element = pathNodes.item(i) as Element
val style = element.getAttributeNode("style") ?: continue
val fill = element.getAttributeNode("fill") ?: continue
if (fill.value == noteBackgroundColor) {
applyBackgroundAndBorder("note", element, style, fill, classNameToBuilder)
}
}
appendStyleElement(document, classNameToBuilder)
// re-format SVG
val transformer: Transformer = TransformerFactory.newDefaultInstance().newTransformer()
transformer.setOutputProperty(OutputKeys.INDENT, "yes")
@Suppress("HttpUrlsUsage")
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2")
// so, first node of insertAdjacentHTML result will be svg and not comment
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes")
Files.newOutputStream(svgFile).buffered().use { fileOut ->
transformer.transform(DOMSource(document.documentElement), StreamResult(fileOut))
}
}
fun hasOnlyAttributes(list: NamedNodeMap, prefix: String, names: List<String>): Boolean {
val nameSet = names.toMutableSet()
for (i in 0 until list.length) {
val attribute = list.item(i) as Attr
val name = attribute.name
if (name.startsWith(prefix) && !nameSet.remove(name)) {
return false
}
}
return nameSet.isEmpty()
}
@Suppress("JavaMapForEach")
fun appendStyleElement(document: Document, classNameToBuilder: Map<String, String>) {
val styleElement = document.createElement("style")
val builder = StringBuilder()
builder.append('\n')
builder.append(""" @import url('https://fonts.googleapis.com/css?family=Roboto|Roboto+Mono&display=swap');""")
classNameToBuilder.forEach { name, content ->
builder.append("\n .").append(name).append(" {")
content.lineSequence().iterator().forEach { builder.append("\n ").append(it.trim()) }
builder.append("\n }")
}
builder.append('\n')
styleElement.textContent = builder.toString()
document.documentElement.insertBefore(styleElement, document.getElementsByTagName("defs").item(0))
}
var lastUsedMonoFont: String? = null
fun extractFontStyle(element: Element, classNameToBuilder: MutableMap<String, String>) {
val family = element.getAttributeNode("font-family")
val size = element.getAttributeNode("font-size")
var fontFamily = family.value
if (lastUsedMonoFont == null && (fontFamily.contains("Mono") || fontFamily == "monospace")) {
lastUsedMonoFont = fontFamily
}
val className = if (fontFamily != lastUsedMonoFont && size.value == defaultFontSize) {
fontFamily = "'Roboto', sans-serif"
"text"
}
else if (size.value == defaultFontSize) {
fontFamily = "'Roboto Mono', monospace"
"code"
}
else {
throw UnsupportedOperationException("font combination is unknown (fontFamily=$fontFamily, lastUsedMonoFont=$lastUsedMonoFont)")
}
classNameToBuilder.computeIfAbsent(className) {
"""
font-family: $fontFamily;
font-size: ${size.value}px;
""".trimIndent()
}
element.removeAttributeNode(family)
element.removeAttributeNode(size)
element.setAttribute("class", className)
}
fun applyBackgroundAndBorder(className: String, element: Element, style: Attr, fill: Attr, classNameToBuilder: MutableMap<String, String>) {
classNameToBuilder.computeIfAbsent(className) {
"""
${style.value.removeSuffix(";").replace(";", ";\n")};
fill: ${fill.value};
""".trimIndent()
}
element.removeAttributeNode(style)
element.removeAttributeNode(fill)
element.setAttribute("class", className)
}