python: use PyO3 for Python bindings

Not sure it's the best way but it's way simpler to maintain than plain
Rust FFI.
This commit is contained in:
dece 2020-05-12 18:45:43 +02:00
parent 4079996395
commit 8cfe445d68
11 changed files with 362 additions and 49 deletions

298
Cargo.lock generated
View file

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@ -5,17 +5,19 @@ authors = ["Dece <shgck@pistache.land>"]
edition = "2018"
[lib]
name = "rir"
name = "ironring"
crate-type = ["lib", "cdylib"]
[[bin]]
name = "ironring"
name = "rir"
[dependencies]
clap = "2.33"
encoding_rs = "0.8"
flate2 = "1.0"
libc = "0.2"
nom = "5"
num-bigint = "0.2"
num-traits = "0.2"
[workspace]
members = ["bindings/python"]

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2
bindings/python/.gitignore vendored Normal file
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@ -0,0 +1,2 @@
/target
Cargo.lock

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@ -0,0 +1,13 @@
[package]
name = "pyironring"
version = "0.1.0"
authors = ["dece <shgck@pistache.land>"]
edition = "2018"
[lib]
name = "pyironring"
crate-type = ["cdylib"]
[dependencies]
rusted_iron_ring = { path = "../.." }
pyo3 = { version = "0.9", features = ["extension-module"] }

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@ -0,0 +1,32 @@
use std::collections::HashMap;
use pyo3::wrap_pymodule;
use pyo3::prelude::*;
#[pymodule]
fn name_hashes(_py: Python, m: &PyModule) -> PyResult<()> {
use ironring::name_hashes::*;
#[pyfn(m, "hash")]
fn py_hash(_py: Python, s: &str) -> PyResult<u32> {
Ok(hash(s))
}
#[pyfn(m, "hash_as_string")]
fn py_hash_as_string(_py: Python, h: u32) -> PyResult<String> {
Ok(hash_as_string(h))
}
#[pyfn(m, "load_name_map")]
fn py_load_name_map(_py: Python, path: &str) -> PyResult<HashMap<String, String>> {
Ok(load_name_map(path)?)
}
Ok(())
}
#[pymodule]
fn pyironring(_py: Python, m: &PyModule) -> PyResult<()> {
m.add_wrapped(wrap_pymodule!(name_hashes))?;
Ok(())
}

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@ -1,17 +1,17 @@
#!/usr/bin/env python3
"""Import hash from the rir dynamic lib."""
import ctypes
import sys
import pyironring
lib = ctypes.cdll.LoadLibrary(sys.argv[1])
path = "/chr/c0000.anibnd.dcx"
hash_u32 = pyironring.name_hashes.hash(path)
print('Hash for path "{}" is {:X}'.format(path, hash_u32))
s = ctypes.c_char_p(b"/chr/c0000.anibnd.dcx")
lib.nam_hash.restype = ctypes.c_uint32
h = lib.nam_hash(s)
print(hex(h))
hash_u32_str = pyironring.name_hashes.hash_as_string(hash_u32)
print("Formatted by Rust: {}".format(hash_u32_str))
lib.nam_hash_as_string.restype = ctypes.c_char_p
h_str = lib.nam_hash_as_string(h)
print(h_str)
hm = pyironring.name_hashes.load_name_map("res/namefile.txt")
#print("Hash map for DS1 names: {}".format(hm))
wrong_hm = pyironring.name_hashes.load_name_map("res/nonexistent.txt")
#print("Loading a non-existent names: {}".format(wrong_hm))

1
pyironring.so Symbolic link
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@ -0,0 +1 @@
target/debug/libpyironring.so

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@ -5,11 +5,11 @@ use std::process;
use clap::{App, AppSettings, Arg, ArgMatches, SubCommand};
use rir::{name_hashes, unpackers};
use ironring::{name_hashes, unpackers};
fn main() {
let default_namefilepath: &str = &get_default_namefilepath();
let matches = App::new("Iron Ring")
let matches = App::new("Rusted Iron Ring")
.setting(AppSettings::ArgRequiredElseHelp)
.subcommand(SubCommand::with_name("bhd")
.about("Extracts BHD/BDT contents")

View file

@ -21,11 +21,6 @@ pub fn hash_as_string(h: u32) -> String {
format!("{:08X}", h)
}
//#[no_mangle]
//pub extern "C" fn nam_hash_as_string(h: u32) -> *mut libc::c_char {
// hash_as_string(h)
//}
/// Load a namelist file into a map.
///
/// Format for the input file should be the following for every line:
@ -42,22 +37,6 @@ pub fn load_name_map(path: &str) -> Result<HashMap<String, String>, Error> {
Ok(names)
}
mod rir_ffi {
use std::ffi;
use super::*;
#[no_mangle]
pub extern "C" fn nam_hash(s: *const libc::c_char) -> u32 {
let c_s = unsafe { assert!(!s.is_null()); ffi::CStr::from_ptr(s) };
hash(c_s.to_str().unwrap())
}
#[no_mangle]
pub extern "C" fn nam_hash_as_string(h: u32) -> *mut libc::c_char {
ffi::CString::new(hash_as_string(h)).unwrap().into_raw()
}
}
#[cfg(test)]
mod tests {
use super::*;

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@ -1,12 +0,0 @@
use std::ffi;
/// Free a String owned by librir.
#[no_mangle]
pub extern "C" fn ffi_free_string(s: *mut libc::c_char) {
unsafe {
if s.is_null() {
return;
}
ffi::CString::from_raw(s)
}
}