Allow adding files to a package without needing a file on disk

closes #207

CHANGELOG.md

@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `Dependency::config()`, `Dependency::user()`, `Dependency::group()`
 - `PackageBuilder::verify_script()`
 - `PackageBuilder::group()` and `PackageBuilder::packager()`
+- `PackageBuilder::with_file_contents()`
 - Added support for the automatic user/group creation feature in rpm 4.19
 
 ### Changed

src/rpm/builder.rs

@@ -363,6 +363,40 @@ impl PackageBuilder {
  Ok(self)
  }
 
+ /// Add a file to the package without needing an existing file.
+ ///
+ /// Helpful if files are being generated on-demand, and you don't want to write them to disk.
+ ///
+ /// ```
+ /// # fn foo() -> Result<(), Box<dyn std::error::Error>> {
+ ///
+ /// let pkg = rpm::PackageBuilder::new("foo", "1.0.0", "Apache-2.0", "x86_64", "some baz package")
+ /// .with_file_contents(
+ /// "
+ /// [check]
+ /// date = true
+ /// time = true
+ /// ",
+ /// rpm::FileOptions::new("/etc/awesome/config.toml").is_config(),
+ /// )?
+ /// .with_file_contents(
+ /// "./awesome-config.toml",
+ /// // you can set a custom mode, capabilities and custom user too
+ /// rpm::FileOptions::new("/etc/awesome/second.toml").mode(0o100744).caps("cap_sys_admin=pe")?.user("hugo"),
+ /// )?
+ /// .build()?;
+ /// # Ok(())
+ /// # }
+ /// ```
+ pub fn with_file_contents(
+ mut self,
+ content: impl Into<Vec<u8>>,
+ options: impl Into<FileOptions>,
+ ) -> Result<Self, Error> {
+ self.add_data(content.into(), Timestamp::now(), options.into())?;
+ Ok(self)
+ }
+
  fn add_data(
  &mut self,
  content: Vec<u8>,