Ability to read & write DOCTYPE information

[emmercm]

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• [X] Have you included sample input, output, error, and expected output?
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Description

Apologies if I missed this in the documentation, but I couldn't find it anywhere, even when stepping through the code.

I would like to read and write DOCTYPEs, including their public ID and system ID. xml2js has the ability to at least write them with the syntax:

xml2js.Builder({
  doctype: {
    pubID: '-//Logiqx//DTD ROM Management Datafile//EN',
    sysID: 'http://www.logiqx.com/Dats/datafile.dtd',
});

Input

Here's some example XML from No-Intro:

<?xml version="1.0"?>
<!DOCTYPE datafile PUBLIC "-//Logiqx//DTD ROM Management Datafile//EN" "http://www.logiqx.com/Dats/datafile.dtd">
<datafile>
    <header>
        <name>Nintendo - Game Boy (Parent-Clone)</name>
        <description>Nintendo - Game Boy (Parent-Clone)</description>
        <version>20230729-000034</version>
        <date>20230729-000034</date>
        <author>aci68, akubi, Arctic Circle System, Aringon, baldjared, Bent, BigFred, BitLooter, buckwheat, C. V. Reynolds, chillerecke, darthcloud, DeadSkullzJr, Densetsu, DeriLoko3, ElBarto, foxe, fuzzball, Gefflon, Hiccup, hking0036, InternalLoss, Jack, jimmsu, Just001Kim, kazumi213, leekindo, Lesserkuma, Madeline, NESBrew12, NGEfreak, nnssxx, norkmetnoil577, NovaAurora, omonim2007, Powerpuff, PPLToast, Psychofox11, rarenight, relax, RetroUprising, rpg2813, sCZther, SonGoku, Tauwasser, togemet2, UnlockerPT, xNo, xprism, xuom2</author>
        <url>https://www.no-intro.org</url>
    </header>
    <game name="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)">
        <description>[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)</description>
        <release name="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)" region="EUR"/>
        <release name="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)" region="JPN"/>
        <release name="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)" region="USA"/>
        <rom name="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1).gb" size="256" crc="59c8598e" md5="32fbbd84168d3482956eb3c5051637f5" sha1="4ed31ec6b0b175bb109c0eb5fd3d193da823339f" status="verified"/>
    </game>
    <game name="[BIOS] Nintendo Game Boy Boot ROM (Japan) (En)" cloneof="[BIOS] Nintendo Game Boy Boot ROM (World) (Rev 1)">
        <description>[BIOS] Nintendo Game Boy Boot ROM (Japan) (En)</description>
        <rom name="[BIOS] Nintendo Game Boy Boot ROM (Japan) (En).gb" size="256" crc="c2f5cc97" md5="a8f84a0ac44da5d3f0ee19f9cea80a8c" sha1="8bd501e31921e9601788316dbd3ce9833a97bcbc" status="verified"/>
    </game>
</datafile>

Code

new XMLParser({
  attributeNamePrefix: '',
}).parse(xmlContents);

Output

See the above

expected data

See the above

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[amitguptagwl]

Honestly speaking, I have never thought about it. But it can be considered for future release.