char index no overflow, but needs to be higher

Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "ahash"
 version = "0.7.6"
@@ -16,6 +18,8 @@ name = "asciiGenerator"
 version = "0.1.0"
 dependencies = [
  "fontdue",
+ "serde",
+ "serde_json",
 ]
 
 [[package]]
@@ -54,6 +58,12 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "itoa"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
+
 [[package]]
 name = "libc"
 version = "0.2.108"
@@ -66,12 +76,84 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb37d2df5df740e582f28f8560cf425f52bb267d872fe58358eadb554909f07a"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c9613b5a66ab9ba26415184cfc41156594925a9cf3a2057e57f31ff145f6568"
+
+[[package]]
+name = "serde"
+version = "1.0.131"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4ad69dfbd3e45369132cc64e6748c2d65cdfb001a2b1c232d128b4ad60561c1"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.131"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b710a83c4e0dff6a3d511946b95274ad9ca9e5d3ae497b63fda866ac955358d2"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.72"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0ffa0837f2dfa6fb90868c2b5468cad482e175f7dad97e7421951e663f2b527"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8daf5dd0bb60cbd4137b1b587d2fc0ae729bc07cf01cd70b36a1ed5ade3b9d59"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
 [[package]]
 name = "ttf-parser"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ae2f58a822f08abdaf668897e96a5656fe72f5a9ce66422423e8849384872e6"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
+
 [[package]]
 name = "version_check"
 version = "0.9.3"

Cargo.toml

@@ -7,4 +7,14 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-fontdue = "0.6.2"
+fontdue = "0.6.2"
+
+# The core APIs, including the Serialize and Deserialize traits. Always
+# required when using Serde. The "derive" feature is only required when
+# using #[derive(Serialize, Deserialize)] to make Serde work with structs
+# and enums defined in your crate.
+serde = { version = "1.0", features = ["derive"] }
+
+# Each data format lives in its own crate; the sample code below uses JSON
+# but you may be using a different one.
+serde_json = "1.0"

src/main.rs

@@ -5,6 +5,7 @@ use fontdue;
 use std::collections::HashMap;
 use std::ops::Add;
 use std::fs::File;
+use serde_json::to_string;
 
 
 fn main() {
@@ -12,21 +13,47 @@ fn main() {
     //let mut currentPath = env::current_dir().expect("what").as_path();
     let data = fs::read("./font/Lucida Console.ttf").expect("it didnt work");
     let font = fontdue::Font::from_bytes(data, fontdue::FontSettings::default()).expect("yessir");
-    let mut output: HashMap<char, Vec<Vec<u8>>> = HashMap::new(); //todo Second value should be bitmap type???
+    let mut font_data: HashMap<char, Vec<Vec<u8>>> = HashMap::new(); //todo Second value should be bitmap type???
     let mut char_index:u32 = 0;
     //NOTE this starts at 0
     const RASTER_FACTOR: f32 = 15.0;
     while char_index < 10000 {
         let char = std::char::from_u32(char_index).expect("error converting u32 to char");
-        char_index += 1;
         let (metrics, mut unsorted_raster) = font.rasterize(char, RASTER_FACTOR);
         if (unsorted_raster.len() > 0) {
-
+            let sorted = rasterize(unsorted_raster, RASTER_FACTOR as usize);
+            font_data.insert(char, sorted);
 
             //(chunks, remainder) = unsorted_raster.as_chunks(RASTER_FACTOR as usize);
             //output.insert(char, chunks.clone());
         }
+        char_index += 1;
     }
+
+    print_json(&mut font_data);
+    //INFO the data in fontdata is a grid as an array with each value being a number from 1 to 100, not a float
+    //TODO load in image and convert to greyscale
+    //TODO create image string
+    //TODO loop through chunks of image adding a new line at the end of each line
+    //TODO compare each chunk to the font_data to find its most representative character and add to the image string
+
+}
+
+fn print_json(output: &mut HashMap<char, Vec<Vec<u8>>>) {
+    let json = serde_json::to_string(&output).unwrap();
+
+    print!("{}", json);
+}
+
+
+fn rasterize(mut unsorted: Vec<u8>, chunk_size: usize) -> Vec<Vec<u8>> {
+    let mut result: Vec<Vec<u8>> = Vec::new();
+    while unsorted.len() > chunk_size {
+        let mut temp = unsorted.clone();
+        unsorted = temp.split_off(chunk_size);
+        result.push(temp.clone());
+    }
+    return result;
 }
 
 //returns remainder, chunk