Add .arc file stubs

.gitignore

@@ -14,3 +14,5 @@ cm3d2tool-test-*
 *.obj
 *.lst
 out/
+*.menu
+*.txt

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "dfuse"]
+	path = dfuse
+	url = https://github.com/lesderid/dfuse

dfuse

@@ -0,0 +1 @@
+Subproject commit d92184e5ca90730a2aceef469a393eeed9e9c5c7

dub.sdl

@@ -4,4 +4,5 @@ authors "lesderid"
 copyright "Copyright © 2019, Les De Ridder"
 license "NCSA"
 dependency "sdlang-d" version="~>0.10.4"
+dependency "dfuse" version="~>0.3.0" path="dfuse"
 targetPath "out"

dub.selections.json

@@ -1,9 +1,10 @@
 {
 	"fileVersion": 1,
 	"versions": {
+		"dfuse": {"path":"dfuse"},
 		"libinputvisitor": "1.2.2",
-		"sdlang-d": "0.10.4",
-		"taggedalgebraic": "0.10.12",
+		"sdlang-d": "0.10.5",
+		"taggedalgebraic": "0.11.2",
 		"unit-threaded": "0.7.55"
 	}
 }

source/app.d

@@ -1,51 +1,102 @@
 import std.stdio;
 import std.range;
 import std.algorithm;
+import std.path;
+import std.file;
+
+import dfuse.fuse;
 
 import cm3d2;
 
 void main(string[] args)
 {
-	if (args.length < 2)
-	{
-		help(args[0]);
-		return;
-	}
+    if (args.length < 2)
+    {
+        help(args[0]);
+        return;
+    }
 
-	switch (args[1])
-	{
-		case "help":
-		case "-h":
-		case "--help":
-			help(args[0]);
-			break;
-		case "menu-to-sdl":
-			ubyte[] data = stdin.byChunk(4096).joiner.array;
-			writeln(Menu.fromMenu(data).toSDL());
-			break;
-		case "sdl-to-menu":
-        	throw new Exception("Not implemented yet");
-		default:
-			writeln("Unknown option '" ~ args[1] ~ "'");
-			writeln();
-			goto case "help";
-	}
+    switch (args[1])
+    {
+    case "help":
+    case "-h":
+    case "--help":
+        help(args[0]);
+        break;
+    case "menu-to-sdl":
+        ubyte[] data = stdin.byChunk(4096).joiner.array;
+        writeln(Menu.fromMenu(data).toSDL());
+        break;
+    case "sdl-to-menu":
+        throw new Exception("Not implemented yet");
+    case "mount-arc":
+        string arcPath;
+        string mountpoint;
+
+        if (args.length < 4 || !(arcPath = args[2]).isValidPath || !(mountpoint = args[3]).isValidPath)
+        {
+            goto case "help";
+        }
+
+        mountArc(arcPath, mountpoint);
+        break;
+    default:
+        writeln("Unknown option '" ~ args[1] ~ "'");
+        writeln();
+        goto case "help";
+    }
 }
 
 void help(string toolPath)
 {
-	writeln("Usage: " ~ toolPath ~ " <command>");
-	writeln();
+    writeln("usage: " ~ toolPath ~ " [--help] <command> [<args>]");
+    writeln();
 
-	void showCommandUsage(string command, string description)
-	{
-		writeln("    " ~ toolPath ~ " " ~ command);
-		writeln("        " ~ description);
-	}
+    void showCommandUsage(string command, string description)
+    {
+        writeln("    " ~ toolPath ~ " " ~ command);
+        writeln("        " ~ description);
+    }
 
-	showCommandUsage("menu-to-sdl", "Convert .menu to SDL");
-	showCommandUsage("sdl-to-menu", "Convert SDL to .menu");
+    showCommandUsage("menu-to-sdl", "Convert .menu (from stdin) to SDL (stdout)");
+    showCommandUsage("sdl-to-menu", "Convert SDL (from stdin) to .menu (stdout)");
+    writeln();
+    showCommandUsage("mount-arc <path> <mountpoint>", "FUSE mount arc file(s) on mountpoint");
 
-	writeln();
-	writeln("Reads input from stdin and writes output to stdout.");
+    writeln();
+    writeln("Reads input from stdin and writes output to stdout.");
+}
+
+void mountArc(string arcPath, string mountpoint)
+{
+    if (!arcPath.exists)
+    {
+        writeln("Error: .arc path doesn't exist.");
+        return;
+    }
+
+    if (!mountpoint.exists || !mountpoint.isDir)
+    {
+        writeln("Error: mountpoint doesn't exist or isn't a directory.");
+        return;
+    }
+
+    string[] arcFiles;
+    if (arcPath.isDir)
+    {
+        arcFiles ~= arcPath.dirEntries("*.arc", SpanMode.shallow).map!(e => e.name).array;
+    }
+    else
+    {
+        arcFiles ~= arcPath;
+    }
+
+    if (arcFiles.length == 0)
+    {
+        writeln("Error: no .arc file(s) selected!");
+        return;
+    }
+
+    auto fuse = new Fuse("cm3d2tool-arcfs", true, true);
+    fuse.mount(new ArcFileSystem(arcFiles), mountpoint, ["ro", "noexec"]);
 }

source/cm3d2/arc.d

@@ -0,0 +1,90 @@
+module cm3d2.arc;
+
+import std.file;
+import std.mmfile;
+
+import dfuse.fuse;
+
+import cm3d2;
+
+class WarcFile
+{
+    private MmFile _file;
+
+    this(MmFile file)
+    {
+        _file = file;
+
+        readHeader();
+    }
+
+    private void readHeader()
+    {
+        auto data = cast(ubyte[]) _file[];
+
+        auto type = cast(string) data.readBytes(4);
+        assert(type == "warc", "Invalid warc file: " ~ type);
+    }
+}
+
+class WarpFile
+{
+    private MmFile _file;
+
+    this(MmFile file)
+    {
+        _file = file;
+
+        readHeader();
+    }
+
+    private void readHeader()
+    {
+        auto data = cast(ubyte[]) _file[];
+
+        auto type = cast(string) data.readBytes(4);
+        assert(type == "warp", "Invalid warp file: " ~ type);
+    }
+}
+
+class ArcFileSystem : Operations
+{
+    private string[] _arcPaths;
+    private WarcFile[] _warcFiles;
+    private WarpFile[] _warpFiles;
+
+    this(string[] arcPaths)
+    {
+        import std.stdio;
+
+        foreach (path; arcPaths)
+        {
+            assert(path.exists);
+
+            stderr.write(path ~ ": ");
+
+            auto mmfile = new MmFile(path);
+            auto type = cast(string) mmfile[0 .. 4];
+            if (type == "warc")
+            {
+                _warcFiles ~= new WarcFile(mmfile);
+
+                stderr.writeln("warc");
+            }
+            else if (type == "warp")
+            {
+                _warpFiles ~= new WarpFile(mmfile);
+
+                stderr.writeln("warp");
+            }
+            else
+            {
+                assert(false, path ~ ": not a valid .arc file");
+            }
+        }
+
+        stderr.writeln(".arc files checked");
+
+        throw new Exception("Not implemented yet");
+    }
+}

source/cm3d2/menu.d

@@ -7,7 +7,7 @@ import std.range;
 
 import sdlang;
 
-import cm3d2.util;
+import cm3d2;
 
 class Menu
 {
@@ -49,7 +49,7 @@ class Menu
 
         assert(data.readInt() == data.length, "Unexpected data at end of file");
 
-        while(data.length > 0)
+        while (data.length > 0)
         {
             string[] line;
 
@@ -80,7 +80,8 @@ class Menu
         auto categoryTag = new Tag(null, "category", [Value(category)]);
         auto descriptionTag = new Tag(null, "description", [Value(description)]);
 
-        auto root = new Tag(null, null, null, null, [versionTag, pathTag, nameTag, categoryTag, descriptionTag]);
+        auto root = new Tag(null, null, null, null, [versionTag, pathTag,
+                nameTag, categoryTag, descriptionTag]);
 
         Tag[] dataTags;
         foreach (line; lines)

source/cm3d2/package.d

@@ -1,3 +1,6 @@
 module cm3d2;
 
+public import cm3d2.util;
+
 public import cm3d2.menu;
+public import cm3d2.arc;

source/cm3d2/util.d

@@ -5,15 +5,31 @@ import std.range;
 import std.traits;
 
 ubyte readByte(Range)(ref Range data)
-    if (isRandomAccessRange!(Unqual!(Range)) && is(ElementType!Range == ubyte) && hasSlicing!Range)
+        if (isRandomAccessRange!(Unqual!(Range))
+            && is(ElementType!Range == ubyte) && hasSlicing!Range)
 {
     auto value = data[0];
     data = data[1 .. $];
     return value;
 }
 
+ubyte[] readBytes(Range)(ref Range data, uint count)
+        if (isRandomAccessRange!(Unqual!(Range))
+            && is(ElementType!Range == ubyte) && hasSlicing!Range)
+{
+    ubyte[] bytes = new ubyte[count];
+
+    for (auto i = 0; i < count; i++)
+    {
+        bytes[i] = data.readByte();
+    }
+
+    return bytes;
+}
+
 string readString(Range)(ref Range data)
-    if (isRandomAccessRange!(Unqual!(Range)) && is(ElementType!Range == ubyte) && hasSlicing!Range)
+        if (isRandomAccessRange!(Unqual!(Range))
+            && is(ElementType!Range == ubyte) && hasSlicing!Range)
 {
     auto length = 0;
     ubyte[] chars;
@@ -42,7 +58,8 @@ string readString(Range)(ref Range data)
 }
 
 uint readInt(Range)(ref Range data)
-    if (isRandomAccessRange!(Unqual!(Range)) && is(ElementType!Range == ubyte) && hasSlicing!Range)
+        if (isRandomAccessRange!(Unqual!(Range))
+            && is(ElementType!Range == ubyte) && hasSlicing!Range)
 {
     auto value = littleEndianToNative!uint(data[0 .. 4]);
     data = data[4 .. $];