Struct MemoryIo 

pub struct MemoryIo {
    pub files: Rc<RefCell<MemoryFileCollection>>,
    /* private fields */
}

An I/O driver backed by a collection of in-memory files.

Fields

files: Rc<RefCell<MemoryFileCollection>>

Map of file paths to in-memory file data in this I/O provider.

Implementations

impl MemoryIo

pub fn new(stdout_allowed: bool) -> MemoryIo

Create a new memory-backed I/O. stdout_allowed controls whether attempts to open stdout on this type succeed or fail.

pub fn create_entry(&mut self, name: &str, data: Vec<u8>)

Create a new entry into the backing file collection, with automatically generated modification time.

pub fn stdout_key(&self) -> &str

Name to use for stdout file

Trait Implementations

impl IoProvider for MemoryIo

fn output_open_name(&mut self, name: &str) -> OpenResult<OutputHandle>

Open the named file for output.

fn output_open_stdout(&mut self) -> OpenResult<OutputHandle>

Open the standard output stream.

fn input_open_name( &mut self, name: &str, _status: &mut dyn StatusBackend, ) -> OpenResult<InputHandle>

Open the named file for input.

fn input_open_name_with_abspath( &mut self, name: &str, status: &mut dyn StatusBackend, ) -> OpenResult<(InputHandle, Option<PathBuf>)>

Open the named file for input and return filesystem path information.

fn input_open_primary( &mut self, _status: &mut dyn StatusBackend, ) -> OpenResult<InputHandle>

Open the “primary” input file, which in the context of TeX is the main input that it’s given. When the build is being done using the filesystem and the input is a file on the filesystem, this function isn’t necesssarily that important, but those conditions don’t always hold.

fn input_open_primary_with_abspath( &mut self, status: &mut dyn StatusBackend, ) -> OpenResult<(InputHandle, Option<PathBuf>)>

Open the primary input and return filesystem path information.

fn input_open_format( &mut self, name: &str, status: &mut dyn StatusBackend, ) -> OpenResult<InputHandle>

Open a format file with the specified name. Format files have a specialized entry point because IOProviders may wish to handle them specially: namely, to munge the filename to one that includes the current version of the Tectonic engine, since the format contents depend sensitively on the engine internals.

fn write_format( &mut self, _name: &str, _data: &[u8], _status: &mut dyn StatusBackend, ) -> Result<(), Error>

Save an a format dump in some way that this provider may be able to recover in the future. This awkward interface is needed to write formats with their special munged file names.