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diskimage.js
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#!/usr/bin/env node
/**
* @fileoverview Command-line interface to disk image processing module
* @author Jeff Parsons <[email protected]>
* @copyright © 2012-2025 Jeff Parsons
* @license MIT <https://www.pcjs.org/LICENSE.txt>
*
* This file is part of PCjs, a computer emulation software project at <https://www.pcjs.org>.
*/
import fs from "fs";
import glob from "glob";
import path from "path";
import DiskLib from "../modules/disklib.js";
import PCJSLib from "../modules/pcjslib.js";
import StreamZip from "../modules/streamzip.js"; // PCjs replacement for "node-stream-zip"
import JSONLib from "../../machines/modules/v2/jsonlib.js";
import StrLib from "../../machines/modules/v2/strlib.js";
import CharSet from "../../machines/pcx86/modules/v2/charset.js";
import Device from "../../machines/modules/v3/device.js";
import MESSAGE from "../../machines/modules/v3/message.js";
import DiskInfo from "../../machines/pcx86/modules/v3/diskinfo.js";
let device = new Device("node");
let printf = device.printf.bind(device);
let sprintf = device.sprintf.bind(device);
let diskLib = new DiskLib(device);
let rootDir, sFileIndexCache;
/**
* compareDisks(sDisk1, sDisk2)
*
* @param {string} sDisk1
* @param {string} sDisk2
* @returns {boolean} (true if the contents of this buffer are equal to the contents of the specified buffer, false otherwise)
*/
function compareDisks(sDisk1, sDisk2)
{
/**
* Passing null for the encoding parameter tells readFileSync() to return a buffer (which, in our case, is a DataBuffer).
*/
let db1 = diskLib.readFileSync(sDisk1, null);
let db2 = diskLib.readFileSync(sDisk2, null);
return db1 && db2 && db1.compare(db2) || false;
}
/**
* createDisk(diskFile, diskette, argv, done)
*
* @param {string} diskFile
* @param {Object} diskette
* @param {Array} argv
* @param {function(DiskInfo)} done
*/
function createDisk(diskFile, diskette, argv, done)
{
let sArchiveFolder = "archive/";
if (path.dirname(diskFile).endsWith("/disks")) {
sArchiveFolder = "../archive/";
}
let sArchiveFile = path.join(path.dirname(diskFile), sArchiveFolder, path.basename(diskFile).replace(".json", ".img"));
if (diskette.archive) {
/**
* The "archive" property determines what we look for in an "archive/" folder alongside the JSON disk image:
*
* 1) If it begins with a period, then we assume it's a file extension (eg, ".img", ".psi", etc)
* 2) If it's "folder", then the name of the diskette is used as a folder name (with trailing slash)
* 3) Anything else is more or less used as-is (and unless it contains a period, we add a trailing slash)
*/
if (diskette.archive[0] == '/') {
sArchiveFile = path.sep + diskette.archive.slice(1);
} else if (diskette.archive[0] == '.') {
if (diskette.archive != ".img") {
sArchiveFile = sArchiveFile.replace(".img", diskette.archive.toUpperCase());
}
} else if (diskette.archive == "folder") {
sArchiveFile = sArchiveFile.replace(".img", path.sep);
} else {
sArchiveFile = path.join(path.dirname(sArchiveFile), diskette.archive) + (diskette.archive.indexOf(".") < 0 && !diskette.archive.endsWith(path.sep)? path.sep : "");
}
} else if (!diskLib.existsFile(sArchiveFile)) {
/**
* Try automatically switching from a "--disk" to a "--dir" operation if there's no IMG file.
*/
sArchiveFile = sArchiveFile.replace(".img", path.sep);
}
let name = path.basename(sArchiveFile);
let fDir = false, arcType = 0, sExt = StrLib.getExtension(sArchiveFile);
if (sArchiveFile.endsWith(path.sep)) {
fDir = true;
diskette.command = "--dir=" + name;
}
else if (sExt == "arc") {
arcType = 1;
diskette.command = "--arc=" + name;
}
else if (sExt == "zip") {
arcType = 2;
diskette.command = "--zip=" + name;
}
else {
diskette.command = "--disk=" + name;
}
let driveInfo = createDriveInfo(argv, diskette);
diskette.archive = sArchiveFile;
printf("checking archive: %s\n", sArchiveFile);
if (fDir || arcType) {
let arcOffset = +argv['offset'] || 0;
let label = diskette.label || argv['label'];
let password = argv['password'];
let normalize = diskette.normalize || argv['normalize'];
let target = diskLib.getTargetValue(diskette.format);
let verbose = argv['verbose'];
diskLib.readDir(sArchiveFile, arcType, arcOffset, label, password, normalize, target, undefined, verbose, driveInfo, done);
} else {
done(diskLib.readDiskSync(sArchiveFile, false, driveInfo));
}
}
/**
* createDriveInfo(argv, diskette)
*
* @param {Object} argv
* @param {Object} [diskette]
* @returns {DiskInfo}
*/
function createDriveInfo(argv, diskette)
{
let driveInfo = {};
let typeDrive = argv['drivetype'];
if (typeof typeDrive == "string") {
let match = typeDrive.match(/^([0-9]+):([0-9]+):([0-9]+):?([0-9]*)$/i);
if (match) {
driveInfo.driveCtrl = "PCJS"; // this pseudo drive controller is required for custom drive geometries
driveInfo.driveType = 0;
driveInfo.nCylinders = +match[1];
driveInfo.nHeads = +match[2];
driveInfo.nSectors = +match[3];
driveInfo.cbSector = +match[4] || 512;
if (argv['partitioned'] !== undefined) {
driveInfo.fPartitioned = !!argv['partitioned'];
} else {
driveInfo.fPartitioned = (driveInfo.nCylinders * driveInfo.nHeads * driveInfo.nSectors * driveInfo.cbSector >= DiskInfo.MIN_PARTITION);
}
} else {
match = typeDrive.match(/^([A-Z]+|):?([0-9]+)$/i);
if (match) {
let driveCtrl = match[1] || driveInfo.driveCtrl || "XT";
let driveType = +match[2];
if (DiskInfo.validateDriveType(driveCtrl, driveType)) {
driveInfo.driveCtrl = driveCtrl;
driveInfo.driveType = driveType;
} else {
match = null;
}
}
}
if (!match) {
printf("unrecognized drive type: %s\n", typeDrive);
}
}
let typeFAT = argv['fat'];
if (typeof typeFAT == "string") {
let match = typeFAT.match(/^([0-9]+):?([0-9]*):?([0-9]*)$/i);
if (match) {
driveInfo.driveCtrl = driveInfo.driveCtrl || "XT";
driveInfo.typeFAT = +match[1];
if (match[2]) driveInfo.clusterSize = +match[2] || 0;
if (match[3]) driveInfo.rootEntries = +match[3] || 0;
}
}
driveInfo.sectorIDs = diskette && diskette.argv['sectorID'] || argv['sectorID'];
driveInfo.sectorErrors = diskette && diskette.argv['sectorError'] || argv['sectorError'];
driveInfo.suppData = diskLib.readFileSync(diskette && diskette.argv['suppData'] || argv['suppData']);
return driveInfo;
}
/**
* dumpSector(di, sector, offset, limit)
*
* @param {DiskInfo} di
* @param {Sector} sector
* @param {number} [offset]
* @param {number} [limit]
* @returns {string}
*/
function dumpSector(di, sector, offset = 0, limit = -1)
{
let sBytes = "", sChars = "", sLines = "";
if (limit < 0) limit = di.cbSector;
while (offset < limit) {
let b = di.read(sector, offset);
if (b < 0) break;
if (!sLines || offset % 16 == 0) sLines += sprintf("%#06x ", offset);
sBytes += sprintf("%02x ", b);
sChars += (b >= 0x20 && b < 0x7f? String.fromCharCode(b) : '.');
if (++offset % 16 == 0) {
sLines += sprintf("%48s %16s\n", sBytes, sChars);
sBytes = sChars = "";
}
}
if (sBytes) sLines += sprintf("%-48s %-16s\n", sBytes, sChars);
return sLines;
}
/**
* printFileDesc(diskFile, diskName, desc)
*
* @param {string} diskFile
* @param {string} diskName
* @param {Object} desc
*/
function printFileDesc(diskFile, diskName, desc)
{
printf("%-32s %-12s %s %#05x %7d %s\n", desc[DiskInfo.FILEDESC.HASH] || "-".repeat(32), desc[DiskInfo.FILEDESC.NAME], desc[DiskInfo.FILEDESC.DATE], +desc[DiskInfo.FILEDESC.ATTR], desc[DiskInfo.FILEDESC.SIZE] || 0, diskName + ':' + desc[DiskInfo.FILEDESC.PATH]);
}
/**
* printManifest(diskFile, diskName, manifest)
*
* @param {string} diskFile
* @param {string} diskName
* @param {Array.<FILEDESC>} manifest
*/
function printManifest(diskFile, diskName, manifest)
{
manifest.forEach(function printManifestFile(desc) {
printFileDesc(diskFile, diskName, desc);
});
}
/**
* processDisk(di, diskFile, argv, diskette, fSingle)
*
* @param {DiskInfo} di
* @param {string} diskFile
* @param {Array} argv
* @param {Object} [diskette] (if present, then we were invoked by readCollection(), so any --output option should be ignored)
* @param {boolean} [fSingle]
*/
function processDisk(di, diskFile, argv, diskette = null, fSingle = false)
{
di.setArgs(argv.slice(1).join(' '));
/**
* Any "--format=xxx" acts as a filter function; if the disk's format doesn't contain
* the specified format, we skip the disk.
*/
if (typeof argv['format'] == "string") {
let sFormat = di.getFormat();
if (sFormat.indexOf(argv['format']) < 0) {
printf("warning: specified format (\"%s\") does not match disk format (\"%s\")\n", argv['format'], sFormat);
return;
}
}
if (argv['all'] || argv['collection'] || argv['verbose']) {
printf("processing: %s (%d bytes, hash %s)\n", di.getName(), di.getSize(), di.getHash());
}
let sFindName = argv['file'];
if (typeof sFindName == "string") {
let sFindText = argv['find'];
if (typeof sFindText != "string") sFindText = false;
/**
* TODO: Implement support for finding text in findFile()....
*/
let desc = di.findFile(sFindName, sFindText);
if (desc) {
printFileDesc(di.getName(), desc);
if (argv['index']) {
/**
* We cheat and search for matching hash values in the provided index; this is much faster than
* opening and searching all the other disk images, even when they DO contain pre-generated file tables.
*/
if (sFileIndexCache === undefined) {
sFileIndexCache = diskLib.readFileSync(argv['index']);
if (!sFileIndexCache) sFileIndexCache = null;
}
let cMatches = 0;
if (sFileIndexCache) {
let re = new RegExp("^" + desc[DiskInfo.FILEDESC.HASH] + ".*$", "gm"), match;
while ((match = re.exec(sFileIndexCache))) {
if (match[0].indexOf(diskFile) >= 0) continue;
if (!cMatches++) printf("see also:\n");
printf("%s\n", match[0]);
}
}
if (!cMatches) printf("no matches\n");
}
}
}
let chs = argv['dump'];
if (chs) {
let iCylinder, iHead, idSector, nSectors;
if (typeof chs == "string") {
let values = chs.split(':');
iCylinder = +values[0], iHead = +values[1], idSector = +values[2], nSectors = +values[3] || 1;
}
if (isNaN(iCylinder) || isNaN(iHead) || !idSector) {
printf("specify --dump=C:H:S[:N]\n");
} else {
while (nSectors-- > 0) {
let sector = di.seek(iCylinder, iHead, idSector);
if (!sector) {
printf("unable to find %d:%d:%d\n", iCylinder, iHead, idSector);
break;
}
let sLines = sprintf("CHS=%d:%d:%d\n", iCylinder, iHead, idSector);
sLines += dumpSector(di, sector, 0);
printf("%s\n", sLines);
idSector++;
}
}
}
if (argv['list']) {
let sLines = "";
let iVolume = +argv['volume'];
if (isNaN(iVolume)) iVolume = -1;
if (argv['list'] == "unused") {
let lba = -1;
while ((lba = di.getUnusedSector(iVolume, lba)) >= 0) {
let sector = di.getSector(lba);
let offset = di.getUnusedSectorData(sector);
sLines += sprintf("\nLBA=%d\n", lba);
/**
* There are two partial sector usage cases: the current sector contains the last N bytes of a file,
* or the sector is COMPLETELY unused (ie, offset is zero). When would a file have a completely unused
* sector? When the disk's cluster size is 2 or more sectors. If a file ends somewhere in the middle
* of a cluster, leaving 1 or more sectors in that cluster unused, we still "flag" all the sectors in
* the cluster as belonging to the file.
*
* This is why we don't differentiate those cases on the basis of whether there's an associated file,
* but simply on whether the offset is zero.
*/
if (offset) {
let iFile = sector[DiskInfo.SECTOR.FILE_INDEX];
device.assert(iFile != undefined);
let file = di.fileTable[iFile];
let cbPartial = file.size - sector[DiskInfo.SECTOR.FILE_OFFSET];
sLines += sprintf("last %d bytes of %s:\n", cbPartial, file.path);
sLines += dumpSector(di, sector, 0, offset);
}
sLines += sprintf("unused %d bytes:\n", di.cbSector - offset);
sLines += dumpSector(di, sector, offset);
}
if (!sLines) sLines = "no unused data space on disk";
} else {
/**
* Other --list options include: "metadata", "sorted"
*/
sLines = di.getFileListing(iVolume, 0, argv['list']) || "\tno listing available\n";
}
printf("%s\n", sLines);
}
/**
* Similar to --extract, --type is another form of extraction (ie, extract file(s) to the console).
*/
let sExtraction, fExtractToFile;
if (argv['type']) {
fExtractToFile = false;
sExtraction = argv['type'];
} else if (argv['extract']) {
fExtractToFile = true;
sExtraction = argv['extract'];
}
let fExtractAll = (typeof sExtraction != "string");
if (sExtraction) {
let extractDir = argv['extdir'];
if (typeof extractDir != "string") {
extractDir = "";
} else if (diskFile.indexOf("http") != 0) {
extractDir = extractDir.replace("%d", path.dirname(diskFile));
}
let extractName = "", extractFolder = "";
if (fExtractAll) {
/**
* Normally, we want every disk to be extracted into its own folder, but if you're just
* extracting a single disk AND you've already specified an extraction dir, then we don't need
* to ALSO put the files inside their own disk-based folder name.
*/
if (!fSingle || !extractDir) {
extractFolder = di.getName();
}
} else {
extractName = sExtraction.toUpperCase();
}
if (argv['collection'] && !extractDir) {
extractFolder = diskLib.getLocalPath(path.join(path.dirname(diskFile), "archive", extractFolder));
if (diskFile.indexOf("/private") == 0 && diskFile.indexOf("/disks") > 0) {
extractFolder = extractFolder.replace("/disks/archive", "/archive");
}
}
diskLib.extractFiles(di, argv, extractName, path.join(extractDir, extractFolder), argv['hidden'] || !fExtractAll, fExtractToFile);
}
if (argv['manifest']) {
let manifest = di.getFileManifest(diskLib.getHash, argv['sorted'], argv['metadata']);
printManifest(diskFile, di.getName(), manifest);
}
/**
* If --rewrite, then rewrite the JSON disk image. --overwrite is implicit.
*/
if (argv['rewrite']) {
if (StrLib.getExtension(diskFile) == "json") {
diskLib.writeDiskSync(diskFile, di, argv['legacy'], 0, true, argv['quiet'], undefined, argv['source']);
}
}
/**
* If --checkdisk, then let's load the corresponding archived disk image (.IMG) as well, convert it to JSON,
* load the JSON as a disk image, save it as a temp .IMG, and verify that temp image and archived image are identical.
*
* You must ALSO specify --rebuild if you want the JSON disk image updated as well.
*/
if (argv['checkdisk'] && diskette) {
if (diskette.format) {
let matchFormat = diskette.format.match(/PC([0-9]+)K/);
if (matchFormat) {
let diskSize = di.getSize();
if (+matchFormat[1] * 1024 != diskSize) {
printf("warning: format '%s' does not match disk size (%d) for %s\n", diskette.format, diskSize, diskFile);
}
}
}
/**
* If a JSON disk image was originally built from kryoflux data AND included special args (eg, for copy-protection),
* then don't bother with the rebuild, because those disks can't be saved as IMG disk images.
*/
if (StrLib.getExtension(diskFile) == "json" && !(diskette.kryoflux && diskette.args)) {
if (typeof argv['checkdisk'] == "string" && diskFile.indexOf(argv['checkdisk']) < 0) return;
createDisk(diskFile, diskette, argv, function(diTemp) {
if (diTemp) {
let sTempJSON = path.join(rootDir, "disks", "tmp", path.basename(diskFile).replace(/\.[a-z]+$/, "") + ".json");
diTemp.setArgs(sprintf("%s --output %s%s", diskette.command, sTempJSON, diskette.args));
diskLib.writeDiskSync(sTempJSON, diTemp, argv['legacy'], 0, true, true, undefined, diskette.source);
let warning = false;
if (StrLib.getExtension(diskette.archive) == "img") {
let json = diTemp.getJSON();
diTemp.buildDiskFromJSON(json);
let sTempIMG = sTempJSON.replace(".json",".img");
diskLib.writeDiskSync(sTempIMG, diTemp, true, 0, true, true, undefined, diskette.source);
if (!compareDisks(sTempIMG, diskette.archive)) {
printf("warning: %s unsuccessfully rebuilt\n", diskette.archive);
warning = true;
} else {
fs.unlinkSync(sTempIMG);
}
}
if (!warning) {
if (argv['rebuild']) {
printf("rebuilding %s\n", diskFile);
fs.renameSync(sTempJSON, diskLib.getLocalPath(diskFile));
} else {
fs.unlinkSync(sTempJSON);
}
}
}
});
}
}
/**
* If --checkpage, then get the disk's listing and see if it's up-to-date in the website's README.md.
*
* Additionally, if the page doesn't have a machine, add one, tailored to the software's requirements as best we can.
*
* You must ALSO specify --rebuild if you want the README.md updated (or created) as well.
*/
if (argv['checkpage'] && diskette && !diskette.hidden && !diskette.demos) {
/**
* We don't need/want any software pages checked/built for private diskette collections.
*
* The PCSIG08 software pages (originally at /software/pcx86/shareware/pcsig08/ and later moved
* to /software/pcx86/sw/misc/pcsig08/) were hand-generated, so it would take some extra effort
* to automatically rebuild those. However, those pages no longer use their own set of diskette
* images at pcsig8a-disks.pcjs.org and pcsig8b-disks.pcjs.org, and the pages themselves are now
* deprecated in favor of the more complete set of pages at /software/pcx86/sw/misc/pcsig/, so the
* "pcsig8" exception below is a bit moot now.
*
* 2023-09-12 UPDATE: GitHub Pages has started giving me deployment errors, due to the large number
* of pages the website contains when a page for every PC-SIG diskette is added to the site. Even
* though the pcjs repository itself is well under the "soft" 1Gb limit that GitHub recommends, there
* is apparently also a "soft" (undocumented?) 1Gb limit on the amount of data GitHub Pages can deploy
* as well, and since the web pages are significantly larger than the README files in the repo,
* we were trying to deploy over 1.5Gb. The size itself only generated a warning, but the process of
* deploying that much data was timing out after about 10 minutes. None of this is explained very
* well by GitHub (or their email notifications), but at least their logs hinted at the problem.
*
* So, for now, only PC-SIG pages for diskettes that we have original copies of are being retained,
* and the rest are no longer being automatically generated. Hence the "/pcsig" exception below
* (formerly "/pcsig8").
*/
if (diskFile.indexOf("/private") >= 0 || diskFile.indexOf("/pcsig") >= 0) return;
if (typeof argv['checkpage'] == "string") {
if (argv['verbose']) printf("checking %s for '%s'...\n", diskFile, argv['checkpage']);
if (diskFile.indexOf(argv['checkpage']) < 0) return;
}
let sListing = di.getFileListing(0, 4);
if (!sListing) return;
let sIndex = "", sIndexNew = "", sAction = "";
let sHeading = "\n### Directory of " + diskette.name + "\n";
let sIndexFile = path.join(path.dirname(diskLib.replaceServerPrefix(diskFile, "/software/")), "README.md");
if (diskLib.existsFile(sIndexFile)) {
sIndex = sIndexNew = diskLib.readFileSync(sIndexFile);
sAction = "updated";
} else {
if (diskette.title) {
let sTitle = diskette.title;
if (sTitle.match(/[#:[\]{}]/)) {
sTitle = '"' + sTitle + '"';
}
let permalink = path.dirname(diskette.path.replace(/^\/(disks\/|)[^/]+/, "/software")) + '/';
sIndexNew = "---\nlayout: page\ntitle: " + sTitle + "\npermalink: " + permalink + "\n---\n";
sIndexNew += sHeading + sListing;
sAction = "created";
}
}
/**
* Step 1: make sure there's a machine present to load/examine/test the software.
*/
let sMachineEmbed = "";
let matchFrontMatter = sIndexNew.match(/^---\n([\s\S]*?\n)---\n/);
if (matchFrontMatter && diskette) {
let sFrontMatter = matchFrontMatter[1];
let matchMachines = sFrontMatter.match(/^machines: *\n([\s\S]*?\n)(\S|$)/m);
if (matchMachines) {
/**
* If this was a generated machine and --rebuild is set, then we'll regenerate it.
*/
if (matchMachines[1].indexOf("autoGen: true") >= 0 && matchMachines[1].indexOf(diskette.name) >= 0 && argv['rebuild']) {
sFrontMatter = sFrontMatter.replace(matchMachines[0], matchMachines[2]);
sIndexNew = sIndexNew.replace(/\n\{% include machine.html .*?%\}\n/, "");
matchMachines = null;
}
}
if (!matchMachines) {
/**
* To add a compatible machine, we look at a few aspects of the diskette itself:
*
* if the diskette format > 360K or any file dates are >= 1986, then a PC AT ("5170") is preferred;
* otherwise, if any file dates are >= 1984, a PC XT ("5160") is preferred;
* otherwise, a PC ("5150") should suffice.
*
* However, a diskette's "version" definition can also include a "@hardware" configuration with "options"
* that supplement or override those initial preferences:
*
* manufacturer, such as "ibm" or "compaq"
* model, such as "5150" or "5160"
* video preference, such as "mda" or "cga"
* memory preference, such "256kb" or "640kb"
* hardware preference, such as "com1" or "mouse"
* operating system (aka boot disk) preference, such as "PC DOS 2.00 (Disk 1)"
*
* Browse diskettes.json for more examples (look for "@hardware" properties).
*
* TODO: Finish support for all of the above preferences (eg, mouse support, serial and parallel ports, etc).
*
* TODO: Consider using the @hardware 'machine' property to allow a specific machine to be used; when that property
* is named 'url' instead, the /_includes/explorer/software.html template uses it to create a hardware_url link for the
* software, but we REALLY prefer having dedicated pages for each piece of software.
*/
let diskSize = di.getSize() / 1024;
let dateNewest = di.getNewestDate(true);
let yearNewest = dateNewest && dateNewest.getFullYear() || 1981;
let hardware = diskette.hardware || {}, options = "";
if (hardware) options = hardware.options || "";
let aOptions = options.split(",");
let findOption = function(aPossibleOptions) {
for (let i = 0; i < aPossibleOptions.length; i++) {
if (!aPossibleOptions[i]) continue;
for (let j = 0; j < aOptions.length; j++) {
if (aOptions[j].indexOf(aPossibleOptions[i]) >= 0) return aOptions[j];
}
}
return aPossibleOptions[0];
};
let findConfig = function(configPath) {
configPath = diskLib.getLocalPath(configPath);
let configPossible;
let aPossibleConfigs = glob.sync(configPath);
let optionMemory = findOption(["kb"]);
for (let i = 0; i < aPossibleConfigs.length; i++) {
let configFile = aPossibleConfigs[i];
if (configFile.indexOf("debugger") > 0 || configFile.indexOf("array") > 0) continue;
configPossible = configFile.substr(rootDir.length);
if (configFile.indexOf(optionMemory) >= 0) break;
}
return configPossible;
};
/**
* Now that we have all the raw inputs ("ingredients"), let's toss some defaults together.
*/
let sAutoGen = " autoGen: true\n";
let sAutoType = hardware.autoType;
if (sAutoType == undefined) sAutoType = diskette.autoType;
let manufacturer = findOption(["ibm","compaq"]);
let sDefaultIBMModel = diskSize > 360 || yearNewest >= 1986? "5170" : (yearNewest >= 1984? "5160" : "5150");
let sDefaultCOMPAQModel = diskSize > 360 || yearNewest >= 1986? "deskpro386" : "portable";
let model = findOption({
"ibm": [sDefaultIBMModel, "5150","5160","5170"],
"compaq": [sDefaultCOMPAQModel, "portable","deskpro386"]
}[manufacturer]);
let video = findOption(["*","mda","cga","ega","vga","vdu"]);
let configFile = hardware.config || findConfig("/machines/pcx86/" + manufacturer + '/' + model + '/' + video + "/**/machine.xml");
if (configFile == "none") configFile = "";
if (configFile) {
let bootDisk = findOption(["", "DOS"]);
let demoDisk = diskette.name;
let sDiskettes = "";
let diskMatch = diskFile.match(/\/pcsig\/([0-9])[0-9]+-/);
if (diskMatch) {
sDiskettes = " diskettes: /machines/pcx86/diskettes.json,/disks/pcsigdisks/pcx86/diskettes.json\n";
}
if (diskette.bootable) {
bootDisk = demoDisk;
demoDisk = "";
} else {
if (sAutoType == undefined) sAutoType = "$date\\r$time\\rB:\\rDIR\\r";
}
let sMachineID = (model.length <= 4? manufacturer : "") + model;
let sMachine = " - id: " + sMachineID + "\n type: pcx86\n config: " + configFile + "\n";
for (let prop in hardware) {
if (prop == "autoType" || prop == "config" || prop == "machine" || prop == "options" || prop == "url" || prop[0] == '@') continue;
let chQuote = "";
if (prop == "drives" || prop == "floppyDrives") {
chQuote = "'";
if (prop == "drives") bootDisk = "None";
sAutoType = "";
}
sMachine += " " + prop + ": " + chQuote + hardware[prop] + chQuote + "\n";
}
if (bootDisk) bootDisk = " A: \"" + bootDisk + "\"\n";
if (demoDisk) demoDisk = " B: \"" + demoDisk + "\"\n";
let sAutoMount = " autoMount:\n" + bootDisk + demoDisk;
if (sAutoType) sAutoType = " autoType: " + sAutoType + "\n";
sFrontMatter += "machines:\n" + sMachine + sDiskettes + sAutoGen + sAutoMount + (sAutoType || "");
sIndexNew = sIndexNew.replace(matchFrontMatter[1], sFrontMatter);
sMachineEmbed = "\n{% include machine.html id=\"" + sMachineID + "\" %}\n";
}
}
}
/**
* Step 2: Making sure there's an up-to-date directory listing. The listing can include a picture of
* the diskette, if any, and a link to the source of the diskette, if any, so append those to the listing now.
*
* Picture example:
*
* 
*/
let sDiskPic = diskette.path.replace(".json", ".jpg");
if (!diskLib.existsFile(sDiskPic)) {
sDiskPic = diskette.path.replace(".json", ".png");
}
if (diskLib.existsFile(sDiskPic)) {
let sDiskServer = diskLib.getServerPrefix(sDiskPic);
if (sDiskServer) {
sListing += "\n![" + diskette.name + "]({{ site.software." + sDiskServer.replace("disks/", "") + ".server }}" + sDiskPic.slice(sDiskServer.length + 1) + ")\n";
}
/**
* Let's rematch the page header and see if the page also needs a preview image.
*/
matchFrontMatter = sIndexNew.match(/^(---\n[\s\S]*?\n---\n)/);
if (matchFrontMatter) {
let sFrontMatter = matchFrontMatter[1];
let match = sFrontMatter.match(/\npreview:.*\n/);
if (!match) {
match = sFrontMatter.match(/\npermalink:.*\n/);
if (match) {
let n = match.index + match[0].length;
sDiskPic = diskLib.getServerPath(sDiskPic, true);
sFrontMatter = sFrontMatter.slice(0, n) + "preview: " + sDiskPic + "\n" + sFrontMatter.slice(n);
sIndexNew = sFrontMatter + sIndexNew.slice(matchFrontMatter[0].length);
}
}
}
}
if (diskette.source && !diskette.source.indexOf("http")) {
sListing += "\n[[Source](" + diskette.source + ")]\n";
}
let sMatch = "\n(##+)\\s+Directory of " + diskette.name.replace("(","\\(").replace(")","\\)").replace("*","\\*").replace("+","\\+") + " *\n([\\s\\S]*?)(\n[^!{[\\s]|$)";
let matchDirectory = sIndexNew.match(new RegExp(sMatch));
if (matchDirectory) {
if (matchDirectory[1].length != 3) {
printf("warning: directory heading level '%s' should really be '###'\n", matchDirectory[1]);
}
let matchInclude = matchDirectory[2].match(/\n\{%.*?%}\n/);
/**
* Work around JavaScript's handling of '$' in the replacement string ('$' is interpreted as a back-reference
* indicator, with '$$' interpreted as '$', even when the search string is NOT a regular expression) by first
* replacing every '$' with '$$' in sListing (the only portion where we're likely encounter '$' characters).
*
* Note that the work-around itself is subject to the interpretation of '$$' as '$', therefore it must use '$$$$'.
*/
sIndexNew = sIndexNew.replace(matchDirectory[0], sHeading + (matchInclude? matchInclude[0] : "") + sListing.replace(/\$/g, "$$$$") + matchDirectory[3]);
} else {
/**
* Look for the last "Directory of ..." entry and insert this directory listing after it (and if there's none, append it).
*/
sListing = sHeading + sListing;
let matchLast, match, re = /\n(##+)\\s+Directory of [^\n]*\n([\\s\\S]*?)\n(\\S|$)/g;
while ((match = re.exec(sIndexNew))) {
matchLast = match;
}
let index = sIndexNew.length, length = 0;
if (matchLast) {
index = matchLast.index;
length = matchLast[0].length;
if (matchLast[3]) length--;
}
sIndexNew = sIndexNew.substr(0, index + length) + sListing + sIndex.substr(index + length);
}
/**
* Step 3: If a generated machine needs to be embedded, put it just ahead of the first directory listing (which
* is why we waited until now); if there are any diskette 'info' summary lines, we want it just ahead of those, too.
*/
let info = "";
if (diskette.info) {
let i;
info += "\n## Information about \"" + diskette.info.diskTitle + "\"\n\n";
for (i = 0; i < diskette.info.diskSummary.length; i++) {
info += " " + diskette.info.diskSummary[i] + "\n";
}
}
/**
* Along with any diskette info, see if there are any files in the decompressed archive folder that we might want
* to include in the index, too.
*
* For now, this inclusion is limited to the PC-SIG collection.
*/
let samples = "";
if (diskFile.indexOf("/pcsig/") >= 0) {
let sampleSpec = path.join(path.dirname(diskLib.getLocalPath(diskette.path)), "archive", "**", "*.{ASM,BAS,DOC,TXT}");
let sampleFiles = glob.sync(sampleSpec);
for (let sampleFile of sampleFiles) {
let sample = diskLib.readFileSync(sampleFile);
if (sample) {
if (CharSet.isText(sample)) {
let fileType = StrLib.getExtension(sampleFile) == "BAS"? "bas" : "";
if (sample[sample.length-1] != '\n') sample += '\n';
sample = "{% raw %}\n```" + fileType + "\n" + sample /* .replace(/([^\n]*\n)/g, ' $1\n') */ + "```\n{% endraw %}\n";
samples += "\n## " + path.basename(sampleFile) + "\n\n" + sample;
} else {
printf("warning: ignoring non-text file '%s'\n", sampleFile);
}
}
}
}
/**
* Clean out any old info and then add any new info. It should be bracketed by 'info_begin'/'info_end' comments.
*/
let sInsert = sMachineEmbed;
let match = sIndexNew.match(/\n\{% comment %\}info_begin\{% endcomment %\}[\S\s]*\{% comment %\}info_end\{% endcomment %\}\n\n/);
if (match) {
sIndexNew = sIndexNew.slice(0, match.index) + sIndexNew.slice(match.index + match[0].length);
} else {
let i = sIndexNew.indexOf(info); // look for (old) unbracketed info, too (probably don't need this anymore)
if (i >= 0) {
sIndexNew = sIndexNew.slice(0, i) + sIndexNew.slice(i + info.length);
}
}
if (info) {
sInsert += "\n{% comment %}info_begin{% endcomment %}\n" + info + "{% comment %}info_end{% endcomment %}\n\n";
}
/**
* Clean out any old samples and then add any new samples. They should be bracketed by 'samples_begin'/'samples_end' comments.
*/
match = sIndexNew.match(/\{% comment %\}samples_begin\{% endcomment %\}[\S\s]*\{% comment %\}samples_end\{% endcomment %\}\n/);
if (match) {
sIndexNew = sIndexNew.slice(0, match.index) + sIndexNew.slice(match.index + match[0].length);
}
if (samples) {
sInsert += "{% comment %}samples_begin{% endcomment %}\n" + samples + "\n{% comment %}samples_end{% endcomment %}\n";
}
if (sInsert) {
matchDirectory = sIndexNew.match(/\n(##+)\s+Directory of /);
if (matchDirectory) {
/**
* WARNING: This is another place where we need to work around JavaScript's handling of '$' in the replacement string.
*/
sIndexNew = sIndexNew.replace(matchDirectory[0], sInsert.replace(/\$/g, "$$$$") + matchDirectory[0]);
} else {
sIndexNew += sInsert;
}
}
/**
* Step 4: Add a document gallery section if there are any documents associated with this software.
*/
if (diskette.documents) {
let skip = true;
for (let document of diskette.documents) {
if (document['@link'] != path.dirname(sIndexFile) + '/') {
skip = false;
break;
}
}
if (!skip) {
let sHeader = "\n<!-- Documentation -->\n";
let sGallery = sHeader + "\n{% include gallery/documents.html width=\"200\" height=\"260\" %}\n";
if (sIndexNew && sIndexNew.indexOf(sHeader) < 0) {
sIndexNew += sGallery;
}
}
}
if (!sIndexNew) {
printf("\tmissing index for \"%s\": %s\n", diskette.title, sIndexFile);
}
else if (sIndexNew != sIndex) {
if (argv['rebuild']) {
if (diskLib.writeFileSync(diskLib.getLocalPath(sIndexFile), sIndexNew, true, true)) {
printf("\t%s index for \"%s\": %s\n", sAction, diskette.title, sIndexFile);
}
} else {
printf("\tindex for \"%s\" should be %s (%s); use --rebuild\n", diskette.title, sAction, sIndexFile);
}
}
}
/**
* NOTE: When recreating an IMG file from a JSON file, if the JSON file preserved the original BPB
* (which includes the original OEM signature), then you can use --legacy to tell writeDiskSync() to tell
* getData() to restore those BPB bytes as well. Otherwise, we leave the PCJS_OEM signature, if any, alone.
*/
if (!diskette) {
if (argv['boot']) {
di.updateBootSector(diskLib.readFileSync(argv['boot'], null));
}
let output = argv['output'];
if (!output || typeof output == "boolean") {
output = argv[1];
}
if (output) {
if (typeof output == "string") output = [output];
if (Array.isArray(output)) {
output.forEach((outputFile) => {
let file = outputFile.replace("%d", path.dirname(diskFile));
diskLib.writeDiskSync(file, di, argv['legacy'], argv['indent']? 2 : 0, argv['overwrite'], argv['quiet'], argv['writable'], argv['source']);
});
} else {
printf("missing output file(s)\n");
}
}
}
}
/**
* readCollection(argv)
*
* If "--collection=[string]" then the set of disks is limited to those where pathname contains [string].
*
* @param {Array} argv
*/
function readCollection(argv)
{
let family = "pcx86";
let asServers = ["diskettes", "gamedisks", "miscdisks", "pcsigdisks", "private"];
let cCollections = 0, cDisks = 0;
let asCollections = [];
asServers.forEach((server) => {
asCollections = asCollections.concat(glob.sync(path.join(rootDir, "disks" + path.sep + server + path.sep + family + path.sep + (server == "pcsigdisks"? "diskettes-annotated.json" : "diskettes.json"))));
});
let messages;
if (argv['quiet']) {
messages = device.setMessages(MESSAGE.WARNING + MESSAGE.ERROR, false);
}
let aDiskNames = {}; // we use this table of disk names to detect non-unique disk names
asCollections.forEach(function readAllCollections(collectionFile) {
collectionFile = collectionFile.substr(rootDir.length);
if (argv['verbose']) printf("reading collection %s...\n", collectionFile);
let library = diskLib.readJSONSync(collectionFile);
if (library) {
let aDiskettes = [];
JSONLib.parseDiskettes(aDiskettes, library, "/pcx86", "/diskettes");
aDiskettes.forEach(function readAllDiskettes(diskette) {
diskette.argc = 0;
diskette.argv = [];
if (!diskette.args) {
diskette.args = "";
} else {
[diskette.argc, diskette.argv] = PCJSLib.getArgs(diskette.args);
diskette.args = " " + diskette.args;
}
/**
* TODO: I don't think '@local' is being used anymore, so consider removing this support. The last
* place I saw it used was in the PCSIG08 diskettes.json files, but weblib.getResource() knows how to map
* local folder names (eg, /pcsig8a-disks) to the corresponding server names now, as does this module,
* so there's probably no longer any need for this.
*/
if (library['@local']) {
diskette.path = diskette.path.replace(library['@server'], library['@local']);
}
let diskFile = diskette.path;
if (typeof argv['collection'] == "string") {
if (argv['verbose']) printf("checking %s for '%s'...\n", diskFile, argv['collection']);
if (diskFile.indexOf(argv['collection']) < 0) return;
}
let sName = path.basename(diskFile);
if (aDiskNames[sName]) {
if (argv['verbose']) printf("warning: %s disk name is not unique (see %s)\n", diskFile, aDiskNames[sName]);
} else {
aDiskNames[sName] = diskFile;
}
let done = function(di, fWrite = true) {
if (di) {
if (fWrite) {
diskLib.writeDiskSync(diskFile, di, false, 0, undefined, undefined, undefined, diskette.source);
}
processDisk(di, diskFile, argv, diskette);
cDisks++;
}
};
let di = diskLib.readDiskSync(diskFile);
if (di) {
done(di, false);
} else {
createDisk(diskFile, diskette, argv, done);
}
});
}
cCollections++;
});
printf("%d config(s), %d disks(s) processed\n\n", cCollections, cDisks);
if (messages) device.setMessages(messages, true);
}
/**
* getArchiveOffset(sArchive, arcType, sOffset)
*
* There were some ARC archives embedded in EXE files (eg, old self-extracting archives) produced by PKware, before they
* started using ZIP archives. Examples include:
*
* PKX35A35.EXE
* PK361.EXE
* PKFIND11.EXE
*
* They can be detected by a 32-bit signature near the end of the file ("PK\xAA\x55" or 0x55aa4b50) followed by a 32-bit
* archive size. The beginning of the archive can be found by subtracting the archive size from the file size (ie, the file
* size up to and including the 32-bit archive size), and then subtracting another 40 (0x28) bytes from that value.
*
* TODO: Determine what that final 40-byte offset represents.
*
* However, since this is an expensive operation, we perform this search ONLY if 1) the caller doesn't provide an explicit
* offset, 2) the caller explicitly set the archive type to TYPE_ARC, and 3) the input file is an EXE file.
*
* There were self-extracting ARC archives produced by SEA (System Enhancement Associates) as well (eg, ARC602.EXE from 1989),
* but those used a different format; this function does not yet support those files.
*
* Self-extracting ZIP archives don't need any help locating the archive offset, because the ZIP file format specifically
* allows for prepended files (eg, EXE files).
*
* @param {string} sArchive
* @param {number} arcType
* @param {string} sOffset
* @returns {number} (the specified --offset value, if any, else the offset of the embedded ARC archive, if any; -1 if none)
*/
function getArchiveOffset(sArchive, arcType, sOffset)
{
let offset = 0;
if (sOffset) {
offset = +sOffset || 0;
} else {
if (arcType == StreamZip.TYPE_ARC && sArchive.toUpperCase().endsWith(".EXE")) {
offset = -1;
let data = diskLib.readFileSync(sArchive, null);
if (data) {
let sizeArc = -1, sizeFile;
let max = 512; // limit the search to the last 512 bytes of the file
for (let o = data.length - 8; o >= 0 && max--; o--) {
if (data.readUInt32LE(o) == 0x55aa4b50) {
sizeArc = data.readUInt32LE(o + 4);
sizeFile = o + 8;
break;
}
}