Add wasm pkg

Cargo.toml

@@ -10,6 +10,9 @@ license = "MIT"
 name = "patchver"
 path = "main.rs"
 
+[lib]
+path = "lib.rs"
+
 [dependencies]
 libsui = "0.3.0"
 pico-args = "0.5.0"

lib.rs

@@ -0,0 +1,35 @@
+use libsui::Elf;
+use libsui::Macho;
+use libsui::PortableExecutable;
+
+use libsui::utils;
+
+const CHANNELS: [&str; 4] = ["stable", "lts", "canary", "rc"];
+const SECTION: &str = "denover";
+
+pub fn patchver<W: std::io::Write>(
+    exe: Vec<u8>,
+    data: String,
+    out: &mut W,
+) -> Result<(), Box<dyn std::error::Error>> {
+    if !CHANNELS.contains(&data.as_str()) {
+        panic!("Invalid channel. Expected one of: stable, lts, canary, rc");
+    }
+
+    let data = data.as_bytes().to_vec();
+    if utils::is_pe(&exe) {
+        PortableExecutable::from(&exe)?
+            .write_resource(SECTION, data)?
+            .build(out)?;
+    } else if utils::is_macho(&exe) {
+        Macho::from(exe)?
+            .write_section(SECTION, data)?
+            .build_and_sign(out)?;
+    } else if utils::is_elf(&exe) {
+        Elf::new(&exe).append(SECTION, &data, out)?;
+    } else {
+        panic!("Unsupported file format");
+    }
+
+    Ok(())
+}

lib/.gitignore

@@ -0,0 +1 @@
+target/