tectonic/io/
mod.rs

1// Copyright 2016-2021 the Tectonic Project
2// Licensed under the MIT License.
3
4//! Extensions to Tectonic’s pluggable I/O backend.
5
6use tectonic_status_base::StatusBackend;
7
8pub mod format_cache;
9pub mod memory;
10
11// Convenience re-exports.
12
13pub use tectonic_io_base::{
14    digest::{self, DigestData},
15    filesystem::{FilesystemIo, FilesystemPrimaryInputIo},
16    normalize_tex_path,
17    stack::IoStack,
18    stdstreams::GenuineStdoutIo,
19    try_open_file, InputFeatures, InputHandle, InputOrigin, IoProvider, OpenResult, OutputHandle,
20};
21
22// Internal Reexports
23
24pub use self::memory::MemoryIo;
25
26// Helper for testing. FIXME: I want this to be conditionally compiled with
27// #[cfg(test)] but things break if I do that.
28
29#[doc(hidden)]
30pub mod testing {
31    use super::*;
32    use std::fs::File;
33    use std::path::{Path, PathBuf};
34
35    pub struct SingleInputFileIo {
36        name: String,
37        full_path: PathBuf,
38    }
39
40    impl SingleInputFileIo {
41        pub fn new(path: &Path) -> SingleInputFileIo {
42            let p = path.to_path_buf();
43
44            SingleInputFileIo {
45                name: p.file_name().unwrap().to_str().unwrap().to_owned(),
46                full_path: p,
47            }
48        }
49    }
50
51    impl IoProvider for SingleInputFileIo {
52        fn output_open_name(&mut self, _: &str) -> OpenResult<OutputHandle> {
53            OpenResult::NotAvailable
54        }
55
56        fn output_open_stdout(&mut self) -> OpenResult<OutputHandle> {
57            OpenResult::NotAvailable
58        }
59
60        fn input_open_name(
61            &mut self,
62            name: &str,
63            _status: &mut dyn StatusBackend,
64        ) -> OpenResult<InputHandle> {
65            if name == self.name {
66                OpenResult::Ok(InputHandle::new(
67                    name,
68                    File::open(&self.full_path).unwrap(),
69                    InputOrigin::Filesystem,
70                ))
71            } else {
72                OpenResult::NotAvailable
73            }
74        }
75    }
76}
tectonic/io/mod.rs

tectonic/io/
mod.rs
