patterns: Added PCX, GZip and PFS0 pattern

README.md

@@ -52,6 +52,9 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
 | FDT | | [`patterns/fdt.hexpat`](patterns/fdt.hexpat) | Flat Linux Device Tree blob |
 | StuffItV5 | `application/x-stuffit` | [`patterns/sit5.hexpat`](patterns/sit5.hexpat) | StuffIt V5 archive |
 | NBT | | [`patterns/nbt.hexpat`](patterns/nbt.hexpat) | Minecraft NBT format |
+| PCX | `application/x-pcx` | [`patterns/pcx.hexpat`](patterns/pcx.hexpat) | PCX Image format |
+| GZIP | `application/gzip` | [`patterns/gzip.hexpat`](patterns/gzip.hexpat) | GZip compressed data format |
+| PFS0 | | [`patterns/pfs0.hexpat`](patterns/pfs0.hexpat) | Nintendo Switch PFS0 archive (NSP files) |
 
 ### Scripts
 

patterns/gzip.hexpat

@@ -0,0 +1,77 @@
+#pragma MIME application/gzip
+
+#include <type/time.pat>
+#include <type/size.pat>
+#include <std/mem.pat>
+
+bitfield Flags {
+    FTEXT       : 1;
+    FHCRC       : 1;
+    FEXTRA      : 1;
+    FNAME       : 1;
+    FCOMMENT    : 1;
+    padding     : 3;
+} [[right_to_left]];
+
+bitfield ExtraFlags {
+    padding : 1;
+    maximumCompression : 1;
+    fastestCompression : 1;
+    padding : 5;
+};
+
+enum CompressionMethod : u8 {
+    Reserved = 0 ... 7,
+    Deflate = 8
+};
+
+enum OperatingSystemID : u8 {
+    FATFileSystem = 0x00,
+    Amiga = 0x01,
+    VMS = 0x02,
+    Unix = 0x03,
+    VM_CMS = 0x04,
+    AtariTOS = 0x05,
+    HPFSFileSystem = 0x06,
+    Macintosh = 0x07,
+    ZSystem = 0x08,
+    CP_M = 0x09,
+    TOPS_20 = 0x0A,
+    NTFSFileSystem = 0x0B,
+    QDOS = 0x0C,
+    AcordRISCOS = 0x0D,
+    Unknown = 0xFF
+};
+
+struct GZip {
+    u16 signature;
+    CompressionMethod compressionMethod;
+    Flags flags;
+    type::time32_t modificationTime;
+    ExtraFlags extraFlags;
+    OperatingSystemID operatingSystemId;
+    
+    if (flags.FEXTRA) {
+        u16 extraLength;
+        u8 extraField[extraLength];
+    }
+    
+    if (flags.FNAME) {
+        char originalFileName[];
+    }
+    
+    if (flags.FCOMMENT) {
+        char comment[];
+    }
+    
+    if (flags.FHCRC) {
+        u16 crc16;
+    }
+    
+    u8 data[while($ < std::mem::size() - 8)] [[sealed]];
+    
+    u32 crc32;
+    type::Size<u32> isize;
+};
+
+GZip gzip @ 0x00;

patterns/pcx.hexpat

@@ -0,0 +1,52 @@
+#pragma MIME application/x-pcx
+
+#include <std/io.pat>
+
+enum Encoding : u8 {
+    NoEncoding = 0x00,
+    RunLengthEncoding = 0x01
+};
+
+enum PaletteType : u16 {
+    MonochromeOrColorInformation = 0x01,
+    GrayscaleInformation = 0x02
+};
+
+enum Version : u8 {
+    V2_5 = 0x00,
+    V2_8WithPalette = 0x02,
+    V2_8_WithoutPalette = 0x03,
+    PaintbrushForWindows = 0x04,
+    V3_0 = 0x05
+};
+
+struct Header {
+    u8 magic;
+    Version version;
+    Encoding encoding;
+    u8 bitsPerPixel;
+    u16 xMin, yMin;
+    u16 xMax, yMax;
+    u16 hdpi, vdpi;
+};
+
+struct RGB8 {
+    u8 r, g, b;
+} [[sealed, color(std::format("{:02X}{:02X}{:02X}", this.r, this.g, this.b))]];
+
+struct Palette {
+    RGB8 color[16];
+};
+
+struct PCX {
+    Header header;
+    Palette palette;
+    padding[1];
+    u8 numPlanes;
+    u16 bytesPerLine;
+    PaletteType paletteType;
+    u16 hres, vres;
+    padding[54];
+};
+
+PCX pcx @ 0x00;

patterns/pfs0.hexpat

@@ -0,0 +1,38 @@
+#include <type/magic.pat>
+#include <type/size.pat>
+
+#include <std/core.pat>
+
+struct FileEntry {
+    u64 dataOffset;
+    type::Size<u64> dataSize;
+    u32 nameOffset;
+    padding[4];
+};
+
+struct String {
+    char value[];
+};
+
+struct Header {
+    type::Magic<"PFS0"> magic;
+    u32 numFiles;
+    type::Size<u32> stringTableSize;
+    padding[4];
+    
+    FileEntry fileEntryTable[numFiles];
+    String strings[numFiles];
+};
+
+struct File {
+    char name[] @ addressof(parent.header.strings) + parent.header.fileEntryTable[std::core::array_index()].nameOffset;
+    u8 data[parent.header.fileEntryTable[std::core::array_index()].dataSize] @ parent.header.fileEntryTable[std::core::array_index()].dataOffset [[sealed]];
+};
+
+struct PFS0 {
+    Header header; 
+    
+    File files[header.numFiles];
+};
+
+PFS0 pfs0 @ 0x00;