@import url("/assets/md.css")feat: describe the font's pattern

@import url("/assets/md.css")

1 files changed, 34 insertions, 0 deletions

diff --git a/patterns/font.hexpat b/patterns/font.hexpat
new file mode 100644
index 0000000..4a6a8c4
--- /dev/null
+++ b/patterns/font.hexpat
@@ -0,0 +1,34 @@
+#pragma author memdmp
+#pragma description Character Bitmap (.charbmp) file format, version 1
+
+#pragma endian little
+#pragma pattern_limit 4294967295
+
+import std.sys;
+import type.magic;
+
+struct PixelRow<auto width> {
+  u8 columns[width - 1] [[name("Row"), inline]];
+};
+struct ImageData<auto width> {
+  PixelRow<width> rows[while(!std::mem::eof())] [[name("Rows"), inline]];
+};
+struct Offset {
+  /** The X Offset of the character */
+  s32 x [[name("X"), comment("The X offset of the character's pixel data"), color("ff99ff")]];
+  /** The Y Offset of the character */
+  s32 y [[name("Y"), comment("The Y offset of the character's pixel data"), color("ffff99")]];
+};
+
+struct CharBmp {
+  /** The width of each line of the drawn character */
+  u8 width [[name("Width"), comment("Indicates the width of the character's drawn data, in pixels"), color("ff44aa")]];
+  /** The width of each line of the drawn character */
+  Offset offset [[name("Offset"), comment("Indicates the offset of the character's drawn data, in pixels"), color("cc99bb")]];
+  /** The horizontal offset that the origin of the next glyph should be from the origin of this glyph. */
+  float advance_width  [[name("Offset"), comment("Indicates the offset of the character's drawn data, in pixels"), color("99aaff")]];
+  /** Table of contents entries */
+  ImageData<width> imageData[width] [[name("Content")]];
+};
+
+CharBmp charbmp @ 0x00 [[name("CharBmp")]];