graphviz-sys 1.0.0

Low level bindings to graphviz.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

use bindgen::builder;
use bindgen::callbacks::ParseCallbacks;

use std::collections::HashSet;
use std::env;
use std::path::PathBuf;

#[derive(Debug)]
struct IgnoreMacros(HashSet<String>);

impl ParseCallbacks for IgnoreMacros {
    fn will_parse_macro(&self, name: &str) -> bindgen::callbacks::MacroParsingBehavior {
        if self.0.contains(name) {
            bindgen::callbacks::MacroParsingBehavior::Ignore
        } else {
            bindgen::callbacks::MacroParsingBehavior::Default
        }
    }
}

fn main() {
    println!("cargo:rustc-link-lib=gvc");
    println!("cargo:rustc-link-lib=cgraph");
    println!("cargo:rustc-link-lib=pathplan");
    println!("cargo:rustc-link-lib=cdt");

    let ignored_macros = IgnoreMacros(
        vec![
            "FP_INFINITE".into(),
            "FP_NAN".into(),
            "FP_NORMAL".into(),
            "FP_SUBNORMAL".into(),
            "FP_ZERO".into(),
        ]
        .into_iter()
        .collect(),
    );

    let bindings = builder()
        .header("./wrapper.h")
        .parse_callbacks(Box::new(ignored_macros))
        .allowlist_file(".*/graphviz/.*")
        .opaque_type("FILE")
        .generate()
        .expect("Unable to generate bindings");

    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());

    bindings
        .write_to_file(out_path.join("bindings.rs"))
        .expect("Couldn't write bindings!");
}