Files
Terrarum/src/net/torvald/btex/BTeXParser.kt
2024-04-25 17:04:15 +09:00

601 lines
25 KiB
Kotlin

package net.torvald.btex
import com.badlogic.gdx.files.FileHandle
import com.badlogic.gdx.graphics.Color
import net.torvald.terrarum.App
import net.torvald.terrarum.btex.BTeXDocument
import net.torvald.terrarum.btex.BTeXDrawCall
import net.torvald.terrarum.btex.MovableTypeDrawCall
import net.torvald.terrarum.gameitems.ItemID
import net.torvald.terrarumsansbitmap.MovableType
import net.torvald.terrarumsansbitmap.gdx.TerrarumSansBitmap
import org.xml.sax.Attributes
import org.xml.sax.InputSource
import org.xml.sax.helpers.DefaultHandler
import java.io.*
import java.util.*
import javax.xml.parsers.SAXParserFactory
import kotlin.reflect.KFunction
import kotlin.reflect.full.declaredFunctions
import kotlin.reflect.full.findAnnotation
/**
* Created by minjaesong on 2023-10-28.
*/
object BTeXParser {
internal val textTags = hashSetOf("P", "TITLE", "AUTHOR", "EDITION", "CHAPTER", "SECTION")
internal val textDecorTags = hashSetOf("SPAN", "CODE")
operator fun invoke(file: FileHandle) = invoke(file.file())
operator fun invoke(file: File): BTeXDocument {
val doc = BTeXDocument()
val parser = SAXParserFactory.newDefaultInstance().newSAXParser()
val stream = FileInputStream(file)
parser.parse(stream, BTeXHandler(doc))
return doc
}
operator fun invoke(string: String): BTeXDocument {
val doc = BTeXDocument()
val parser = SAXParserFactory.newDefaultInstance().newSAXParser()
parser.parse(InputSource(StringReader(string)), BTeXHandler(doc))
return doc
}
internal class BTeXHandler(val doc: BTeXDocument) : DefaultHandler() {
private val DEFAULT_FONTCOL = Color(0x222222ff)
private val LINE_HEIGHT = doc.lineHeightInPx
private var cover = ""
private var inner = ""
private var papersize = ""
private var def = ""
private var btexOpened = false
private var pageWidth = doc.textWidth
private var pageLines = doc.pageLines
private var pageHeight = doc.textHeight
private val blockLut = HashMap<String, ItemID>()
private val tagStack = ArrayList<String>() // index zero should be "btex"
private var currentTheme = ""
private var spanColour: String? = null
private var typeX = 0
private var typeY = 0
private val elemOpeners: HashMap<String, KFunction<*>> = HashMap()
private val elemClosers: HashMap<String, KFunction<*>> = HashMap()
private val paragraphBuffer = StringBuilder()
init {
BTeXHandler::class.declaredFunctions.filter { it.findAnnotation<OpenTag>() != null }.forEach {
println("Tag opener: ${it.name}")
elemOpeners[it.name] = it
}
BTeXHandler::class.declaredFunctions.filter { it.findAnnotation<CloseTag>() != null }.forEach {
println("Tag closer: ${it.name}")
elemClosers[it.name] = it
}
}
private fun printdbg(message: String?) {
val CSI = "\u001B[32m"
val timeNow = System.currentTimeMillis()
val ss = (timeNow / 1000) % 60
val mm = (timeNow / 60000) % 60
val hh = (timeNow / 3600000) % 24
val ms = timeNow % 1000
val out = this.javaClass.getSimpleName()
val prompt = CSI + String.format("%02d:%02d:%02d.%03d [%s]%s ", hh, mm, ss, ms, out, App.csi0)
if (message == null) {
println(prompt + "null")
}
else {
val indentation = " ".repeat(out.length + 16)
val msgLines: Array<String> = message.toString().split("\\n".toRegex()).dropLastWhile { it.isEmpty() }
.toTypedArray()
for (i in msgLines.indices) {
println((if (i == 0) prompt else indentation) + msgLines[i])
}
}
}
override fun startElement(uri: String, localName: String, qName: String, attributes: Attributes) {
val tag = qName
if (tagStack.isEmpty() && tag.lowercase() != "btexdoc") throw BTeXParsingException("Document is not BTeX")
val theTag = tag.uppercase()
if (tagStack.isNotEmpty() && tagStack.any { textTags.contains(it) } && textTags.contains(theTag))
throw IllegalStateException("Text tag '$theTag' used inside of text tags (tag stack is ${tagStack.joinToString()})")
if (tagStack.isNotEmpty() && !textTags.contains(tagStack.last()) && textDecorTags.contains(theTag))
throw IllegalStateException("Text decoration tag '$theTag' used outside of a text tag (tag stack is ${tagStack.joinToString()})")
tagStack.add(theTag)
val attribs = HashMap<String, String>().also {
it.putAll((0 until attributes.length).map { attributes.getQName(it) to attributes.getValue(it) })
}
elemOpeners["processElem$theTag"].let {
if (it == null)
System.err.println("Unknown tag: $theTag")
else {
try {
it.call(this, this, doc, theTag, uri, attribs)
}
catch (e: Throwable) {
throw BTeXParsingException(e.stackTraceToString())
}
}
}
// printdbg("Start element \t($theTag)")
}
override fun endElement(uri: String, localName: String, qName: String) {
val popped = tagStack.removeLast()
val theTag = qName.uppercase()
elemClosers["closeElem$theTag"].let {
try {
it?.call(this, this, doc, theTag, uri)
}
catch (e: Throwable) {
throw BTeXParsingException(e.stackTraceToString())
}
}
// printdbg(" End element \t($popped)")
}
override fun characters(ch: CharArray, start: Int, length: Int) {
val str =
String(ch.sliceArray(start until start + length)).replace('\n', ' ').replace(Regex(" +"), " ")//.trim()
if (str.isNotEmpty()) {
// printdbg("Characters \t\"$str\"")
paragraphBuffer.append(str)
}
}
private fun advanceCursorPre(w: Int, h: Int) {
if (typeX + w > pageWidth) {
typeY += LINE_HEIGHT
typeX = 0
}
if (typeY + h > pageHeight) {
typeX = 0
typeY = 0
doc.addNewPage()
}
}
private fun advanceCursorPost(w: Int, h: Int) {
typeX += w
typeY += h
}
private lateinit var testFont: TerrarumSansBitmap
private fun getFont() = when (cover) {
"typewriter" -> TODO()
else -> App.fontGame ?: let {
if (!::testFont.isInitialized) testFont = TerrarumSansBitmap(App.FONT_DIR)
testFont
}
}
private val hexColRegexRGBshort = Regex("#[0-9a-fA-F]{3,3}")
private val hexColRegexRGB = Regex("#[0-9a-fA-F]{6,6}")
private fun getSpanColour(): Color = if (spanColour == null) DEFAULT_FONTCOL
else if (spanColour!!.matches(hexColRegexRGB)) {
val rs = spanColour!!.substring(1,3)
val gs = spanColour!!.substring(3,5)
val bs = spanColour!!.substring(5,7)
val r = rs.toInt(16) / 255f
val g = gs.toInt(16) / 255f
val b = bs.toInt(16) / 255f
Color(r, g, b, 1f)
}
else if (spanColour!!.matches(hexColRegexRGBshort)) {
val rs = spanColour!!.substring(1,2)
val gs = spanColour!!.substring(2,3)
val bs = spanColour!!.substring(3,4)
val r = rs.toInt(16) / 15f
val g = gs.toInt(16) / 15f
val b = bs.toInt(16) / 15f
Color(r, g, b, 1f)
}
else
spanColourMap.getOrDefault(spanColour, DEFAULT_FONTCOL)
// list of CSS named colours (list supports up to CSS Colors Level 4)
private val spanColourMap = hashMapOf(
"black" to Color(0x000000ff.toInt()),
"silver" to Color(0xc0c0c0ff.toInt()),
"gray" to Color(0x808080ff.toInt()),
"white" to Color(0xffffffff.toInt()),
"maroon" to Color(0x800000ff.toInt()),
"red" to Color(0xff0000ff.toInt()),
"purple" to Color(0x800080ff.toInt()),
"fuchsia" to Color(0xff00ffff.toInt()),
"green" to Color(0x008000ff.toInt()),
"lime" to Color(0x00ff00ff.toInt()),
"olive" to Color(0x808000ff.toInt()),
"yellow" to Color(0xffff00ff.toInt()),
"navy" to Color(0x000080ff.toInt()),
"blue" to Color(0x0000ffff.toInt()),
"teal" to Color(0x008080ff.toInt()),
"aqua" to Color(0x00ffffff.toInt()),
"aliceblue" to Color(0xf0f8ffff.toInt()),
"antiquewhite" to Color(0xfaebd7ff.toInt()),
"aqua" to Color(0x00ffffff.toInt()),
"aquamarine" to Color(0x7fffd4ff.toInt()),
"azure" to Color(0xf0ffffff.toInt()),
"beige" to Color(0xf5f5dcff.toInt()),
"bisque" to Color(0xffe4c4ff.toInt()),
"black" to Color(0x000000ff.toInt()),
"blanchedalmond" to Color(0xffebcdff.toInt()),
"blue" to Color(0x0000ffff.toInt()),
"blueviolet" to Color(0x8a2be2ff.toInt()),
"brown" to Color(0xa52a2aff.toInt()),
"burlywood" to Color(0xdeb887ff.toInt()),
"cadetblue" to Color(0x5f9ea0ff.toInt()),
"chartreuse" to Color(0x7fff00ff.toInt()),
"chocolate" to Color(0xd2691eff.toInt()),
"coral" to Color(0xff7f50ff.toInt()),
"cornflowerblue" to Color(0x6495edff.toInt()),
"cornsilk" to Color(0xfff8dcff.toInt()),
"crimson" to Color(0xdc143cff.toInt()),
"cyan" to Color(0x00ffffff.toInt()),
"darkblue" to Color(0x00008bff.toInt()),
"darkcyan" to Color(0x008b8bff.toInt()),
"darkgoldenrod" to Color(0xb8860bff.toInt()),
"darkgray" to Color(0xa9a9a9ff.toInt()),
"darkgreen" to Color(0x006400ff.toInt()),
"darkgrey" to Color(0xa9a9a9ff.toInt()),
"darkkhaki" to Color(0xbdb76bff.toInt()),
"darkmagenta" to Color(0x8b008bff.toInt()),
"darkolivegreen" to Color(0x556b2fff.toInt()),
"darkorange" to Color(0xff8c00ff.toInt()),
"darkorchid" to Color(0x9932ccff.toInt()),
"darkred" to Color(0x8b0000ff.toInt()),
"darksalmon" to Color(0xe9967aff.toInt()),
"darkseagreen" to Color(0x8fbc8fff.toInt()),
"darkslateblue" to Color(0x483d8bff.toInt()),
"darkslategray" to Color(0x2f4f4fff.toInt()),
"darkslategrey" to Color(0x2f4f4fff.toInt()),
"darkturquoise" to Color(0x00ced1ff.toInt()),
"darkviolet" to Color(0x9400d3ff.toInt()),
"deeppink" to Color(0xff1493ff.toInt()),
"deepskyblue" to Color(0x00bfffff.toInt()),
"dimgray" to Color(0x696969ff.toInt()),
"dimgrey" to Color(0x696969ff.toInt()),
"dodgerblue" to Color(0x1e90ffff.toInt()),
"firebrick" to Color(0xb22222ff.toInt()),
"floralwhite" to Color(0xfffaf0ff.toInt()),
"forestgreen" to Color(0x228b22ff.toInt()),
"fuchsia" to Color(0xff00ffff.toInt()),
"gainsboro" to Color(0xdcdcdcff.toInt()),
"ghostwhite" to Color(0xf8f8ffff.toInt()),
"gold" to Color(0xffd700ff.toInt()),
"goldenrod" to Color(0xdaa520ff.toInt()),
"gray" to Color(0x808080ff.toInt()),
"green" to Color(0x008000ff.toInt()),
"greenyellow" to Color(0xadff2fff.toInt()),
"grey" to Color(0x808080ff.toInt()),
"honeydew" to Color(0xf0fff0ff.toInt()),
"hotpink" to Color(0xff69b4ff.toInt()),
"indianred" to Color(0xcd5c5cff.toInt()),
"indigo" to Color(0x4b0082ff.toInt()),
"ivory" to Color(0xfffff0ff.toInt()),
"khaki" to Color(0xf0e68cff.toInt()),
"lavender" to Color(0xe6e6faff.toInt()),
"lavenderblush" to Color(0xfff0f5ff.toInt()),
"lawngreen" to Color(0x7cfc00ff.toInt()),
"lemonchiffon" to Color(0xfffacdff.toInt()),
"lightblue" to Color(0xadd8e6ff.toInt()),
"lightcoral" to Color(0xf08080ff.toInt()),
"lightcyan" to Color(0xe0ffffff.toInt()),
"lightgoldenrodyellow" to Color(0xfafad2ff.toInt()),
"lightgray" to Color(0xd3d3d3ff.toInt()),
"lightgreen" to Color(0x90ee90ff.toInt()),
"lightgrey" to Color(0xd3d3d3ff.toInt()),
"lightpink" to Color(0xffb6c1ff.toInt()),
"lightsalmon" to Color(0xffa07aff.toInt()),
"lightseagreen" to Color(0x20b2aaff.toInt()),
"lightskyblue" to Color(0x87cefaff.toInt()),
"lightslategray" to Color(0x778899ff.toInt()),
"lightslategrey" to Color(0x778899ff.toInt()),
"lightsteelblue" to Color(0xb0c4deff.toInt()),
"lightyellow" to Color(0xffffe0ff.toInt()),
"lime" to Color(0x00ff00ff.toInt()),
"limegreen" to Color(0x32cd32ff.toInt()),
"linen" to Color(0xfaf0e6ff.toInt()),
"magenta" to Color(0xff00ffff.toInt()),
"maroon" to Color(0x800000ff.toInt()),
"mediumaquamarine" to Color(0x66cdaaff.toInt()),
"mediumblue" to Color(0x0000cdff.toInt()),
"mediumorchid" to Color(0xba55d3ff.toInt()),
"mediumpurple" to Color(0x9370dbff.toInt()),
"mediumseagreen" to Color(0x3cb371ff.toInt()),
"mediumslateblue" to Color(0x7b68eeff.toInt()),
"mediumspringgreen" to Color(0x00fa9aff.toInt()),
"mediumturquoise" to Color(0x48d1ccff.toInt()),
"mediumvioletred" to Color(0xc71585ff.toInt()),
"midnightblue" to Color(0x191970ff.toInt()),
"mintcream" to Color(0xf5fffaff.toInt()),
"mistyrose" to Color(0xffe4e1ff.toInt()),
"moccasin" to Color(0xffe4b5ff.toInt()),
"navajowhite" to Color(0xffdeadff.toInt()),
"navy" to Color(0x000080ff.toInt()),
"oldlace" to Color(0xfdf5e6ff.toInt()),
"olive" to Color(0x808000ff.toInt()),
"olivedrab" to Color(0x6b8e23ff.toInt()),
"orange" to Color(0xffa500ff.toInt()),
"orangered" to Color(0xff4500ff.toInt()),
"orchid" to Color(0xda70d6ff.toInt()),
"palegoldenrod" to Color(0xeee8aaff.toInt()),
"palegreen" to Color(0x98fb98ff.toInt()),
"paleturquoise" to Color(0xafeeeeff.toInt()),
"palevioletred" to Color(0xdb7093ff.toInt()),
"papayawhip" to Color(0xffefd5ff.toInt()),
"peachpuff" to Color(0xffdab9ff.toInt()),
"peru" to Color(0xcd853fff.toInt()),
"pink" to Color(0xffc0cbff.toInt()),
"plum" to Color(0xdda0ddff.toInt()),
"powderblue" to Color(0xb0e0e6ff.toInt()),
"purple" to Color(0x800080ff.toInt()),
"rebeccapurple" to Color(0x663399ff.toInt()),
"red" to Color(0xff0000ff.toInt()),
"rosybrown" to Color(0xbc8f8fff.toInt()),
"royalblue" to Color(0x4169e1ff.toInt()),
"saddlebrown" to Color(0x8b4513ff.toInt()),
"salmon" to Color(0xfa8072ff.toInt()),
"sandybrown" to Color(0xf4a460ff.toInt()),
"seagreen" to Color(0x2e8b57ff.toInt()),
"seashell" to Color(0xfff5eeff.toInt()),
"sienna" to Color(0xa0522dff.toInt()),
"silver" to Color(0xc0c0c0ff.toInt()),
"skyblue" to Color(0x87ceebff.toInt()),
"slateblue" to Color(0x6a5acdff.toInt()),
"slategray" to Color(0x708090ff.toInt()),
"slategrey" to Color(0x708090ff.toInt()),
"snow" to Color(0xfffafaff.toInt()),
"springgreen" to Color(0x00ff7fff.toInt()),
"steelblue" to Color(0x4682b4ff.toInt()),
"tan" to Color(0xd2b48cff.toInt()),
"teal" to Color(0x008080ff.toInt()),
"thistle" to Color(0xd8bfd8ff.toInt()),
"tomato" to Color(0xff6347ff.toInt()),
"transparent" to Color(0),
"turquoise" to Color(0x40e0d0ff.toInt()),
"violet" to Color(0xee82eeff.toInt()),
"wheat" to Color(0xf5deb3ff.toInt()),
"white" to Color(0xffffffff.toInt()),
"whitesmoke" to Color(0xf5f5f5ff.toInt()),
"yellow" to Color(0xffff00ff.toInt()),
"yellowgreen" to Color(0x9acd32ff.toInt())
)
private val pageWidthMap = hashMapOf(
"standard" to 450
)
private val pageHeightMap = hashMapOf(
"standard" to 24
)
@OpenTag // reflective access is impossible with 'private'
fun processElemBTEXDOC(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
if (handler.btexOpened) {
throw BTeXParsingException("BTEXDOC tag has already opened")
}
if (attribs.containsKey("def"))
handler.def = attribs["def"]!!
else {
handler.cover = attribs["cover"] ?: "printout"
handler.inner = attribs["inner"] ?: "standard"
handler.papersize = attribs["papersize"] ?: "standard"
//change the "default values" of the document
handler.pageWidth = pageWidthMap[papersize]!!
handler.pageLines = pageHeightMap[papersize]!!
handler.pageHeight = pageLines * LINE_HEIGHT
doc.textWidth = pageWidth
doc.textHeight = pageHeight
}
handler.btexOpened = true
printdbg("BTeX document: def=${handler.def}, cover=${handler.cover}, inner=${handler.inner}, papersize=${handler.papersize}, dim=${handler.pageWidth}x${handler.pageHeight} (${handler.pageLines} lines)")
}
@OpenTag // reflective access is impossible with 'private'
fun processElemPAIR(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
if (tagStack.size == 3 && tagStack.getOrNull(1) == "blocklut") {
blockLut[attribs["key"]!!] = attribs["value"]!!
}
else {
throw BTeXParsingException("<pair> used outside of <blocklut>")
}
}
@OpenTag // reflective access is impossible with 'private'
fun processElemSPAN(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
attribs["span"]?.let {
spanColour = it
}
}
@OpenTag // reflective access is impossible with 'private'
fun processElemTABLEOFCONTENTS(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
// TODO add post-parsing hook to the handler
}
@OpenTag // reflective access is impossible with 'private'
fun processElemBTEX(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
handler.paragraphBuffer.append("BTeX")
}
@OpenTag // reflective access is impossible with 'private'
fun processElemCOVER(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
doc.addNewPage(Color(0x6f4a45ff))
handler.spanColour = "white"
}
@OpenTag // reflective access is impossible with 'private'
fun processElemTOC(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
doc.addNewPage()
}
@OpenTag // reflective access is impossible with 'private'
fun processElemMANUSCRIPT(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
doc.addNewPage()
}
@OpenTag // reflective access is impossible with 'private'
fun processElemBR(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
handler.paragraphBuffer.append("\n")
}
@OpenTag // reflective access is impossible with 'private'
fun processElemNEWPAGE(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
doc.addNewPage()
}
@CloseTag // reflective access is impossible with 'private'
fun closeElemFULLPAGEBOX(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) {
doc.addNewPage()
}
@OpenTag // reflective access is impossible with 'private'
fun processElemP(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
}
@CloseTag
fun closeElemCOVER(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) {
handler.spanColour = null
}
@CloseTag // reflective access is impossible with 'private'
fun closeElemTITLE(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) = closeElemP(handler, doc, theTag, uri)
@CloseTag // reflective access is impossible with 'private'
fun closeElemAUTHOR(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) = closeElemP(handler, doc, theTag, uri)
@CloseTag // reflective access is impossible with 'private'
fun closeElemEDITION(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) = closeElemP(handler, doc, theTag, uri)
@CloseTag // reflective access is impossible with 'private'
fun closeElemCHAPTER(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) = closeElemP(handler, doc, theTag, uri)
@CloseTag // reflective access is impossible with 'private'
fun closeElemSECTION(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) = closeElemP(handler, doc, theTag, uri)
@CloseTag // reflective access is impossible with 'private'
fun closeElemP(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) {
val thePar = handler.paragraphBuffer.toString().trim() + "\n"
printdbg("Par: '$thePar'")
val font = getFont()
val slugs = MovableType(font, thePar, doc.textWidth)
var remainder = doc.pageLines - doc.currentLine
var slugHeight = slugs.height
var linesOut = 0
printdbg("Page: ${doc.currentPage+1}, Line: ${doc.currentLine}")
if (slugHeight > remainder) {
val subset = linesOut to linesOut + remainder
val drawCall = BTeXDrawCall(
0,
doc.currentLine * doc.lineHeightInPx,
handler.currentTheme,
handler.getSpanColour(),
MovableTypeDrawCall(slugs, subset.first, subset.second)
)
doc.appendDrawCall(drawCall)
linesOut += remainder
slugHeight -= remainder
doc.addNewPage()
}
while (slugHeight > 0) {
remainder = minOf(slugHeight, doc.pageLines)
val subset = linesOut to linesOut + remainder
val drawCall = BTeXDrawCall(
0,
doc.currentLine * doc.lineHeightInPx,
handler.currentTheme,
handler.getSpanColour(),
MovableTypeDrawCall(slugs, subset.first, subset.second)
)
doc.appendDrawCall(drawCall)
linesOut += remainder
slugHeight -= remainder
if (remainder == doc.pageLines) {
doc.addNewPage()
}
}
handler.paragraphBuffer.clear()
}
@OpenTag // reflective access is impossible with 'private'
fun processElemARST(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String, attribs: HashMap<String, String>) {
}
@CloseTag // reflective access is impossible with 'private'
fun closeElemSPAN(handler: BTeXHandler, doc: BTeXDocument, theTag: String, uri: String) {
spanColour = null
}
}
private annotation class OpenTag
private annotation class CloseTag
}
class BTeXParsingException(s: String) : RuntimeException(s) {
}