add tool for graph visualization

graph2viz/.gitignore

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+*.csv
+*.png
+*.pdf
+target

graph2viz/Cargo.toml

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+[package]
+name = "graph2viz"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+fret = { path = "../LibAFL/fuzzers/FRET" }
+serde = { version = "1.0", default-features = false, features = ["alloc"] } # serialization lib
+hashbrown =  { version = "0.12", features = ["serde", "ahash-compile-time-rng"] } # A faster hashmap, nostd compatible
+petgraph = { version="0.6.0", features = ["serde-1"] }
+ron = "0.7" # write serialized data - including hashmaps
+rand = "0.5"

graph2viz/src/main.rs

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+use std::path::PathBuf;
+use std::{env,fs};
+use fret::systemstate::graph::SysGraphFeedbackState;
+use petgraph::dot::{Dot, Config};
+
+fn main() {
+    let args : Vec<String> = env::args().collect();
+
+    let path_a = PathBuf::from(args[1].clone());
+    let raw_a = fs::read(path_a).expect("Can not read dumped traces b");
+    // let path_b = PathBuf::from(args[2].clone());
+
+    let feedbackstate : SysGraphFeedbackState = ron::from_str(&String::from_utf8_lossy(&raw_a)).expect("Can not parse HashMap");
+
+    let newgraph = feedbackstate.graph.map(
+        |_, n| n.get_taskname(),
+        // |_, n| format!("{} {:?}",n.get_taskname(),n.get_input_counts().iter().min().unwrap_or(&0)),
+        |_, e| e,
+    );
+    // let tempg = format!("{:?}",Dot::with_config(&newgraph, &[Config::EdgeNoLabel]));
+    println!("{:?}",Dot::with_config(&newgraph, &[Config::EdgeNoLabel]));
+
+}