Finished partial BDF output

src/main.rs

@@ -3,7 +3,7 @@ use std::fmt::Display;
 mod bit_reader;
 
 fn main() {
-    let font_file = include_bytes!("u8g2_font_logisoso24_tr.u8g2font");
+    let font_file = include_bytes!("u8g2_font_8x13_tr.u8g2font");
 
     let header_bytes = &font_file[0..23];
     let mut data_bytes = &font_file[23..];
@@ -120,6 +120,8 @@ fn main() {
     for i in glyphs.iter() {
         bdf_file.push_str(&format!("STARTCHAR {}\n", i.unicode as char));
         bdf_file.push_str(&format!("ENCODING {}\n", i.unicode));
+        bdf_file.push_str(&format!("BBX {} {} {} {}\n", i.glyph_width, i.glyph_height, i.glyph_x, i.glyph_y));
+        bdf_file.push_str("BITMAP\n");
         
         let mut decoded_bits = Vec::new();
 
@@ -143,17 +145,37 @@ fn main() {
             }
         }
 
-        let mut bdf_bitmap: Vec<Vec<u8>> = Vec::new();
+        let mut decoded_bits_iter = decoded_bits.iter();
         
-        while !decoded_bits.is_empty() {
-            for j in decoded_bits.iter().by_ref().take(i.glyph_width as usize) {
-                
+        for _ in 0..i.glyph_height {
+            let bitmap_row = decoded_bits_iter.by_ref().take(i.glyph_width as usize).cloned().collect::<Vec<_>>();
+            let (chunks, remainder) = bitmap_row.as_chunks::<8>();
+            let mut bitmap_row_bytes = Vec::new();
+
+            for k in chunks {
+                bitmap_row_bytes.push(k.iter().fold(0_u8, |v, b| (v << 1) + (*b as u8)));
             }
+
+            if remainder.len() != 0 {
+                let bits = remainder.len();
+                let mut last_byte = remainder.iter().fold(0_u8, |v, b| (v << 1) + (*b as u8));
+                last_byte = last_byte << 8-bits;
+                bitmap_row_bytes.push(last_byte);
+            }
+            let mut bitmap_hex = String::new();
+
+            for byte in bitmap_row_bytes {
+                bitmap_hex.push_str(&format!("{:X}", byte));
+            }
+            bitmap_hex.push('\n');
+            bdf_file.push_str(&bitmap_hex);
         }
+        bdf_file.push_str("ENDCHAR\n");
     }
 
     bdf_file.push_str("ENDFONT");
 
+    println!("{bdf_file}");
 }
 
 #[derive(Debug)]