mirror of
https://github.com/fluencelabs/wasmer
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48 lines
1.5 KiB
Rust
48 lines
1.5 KiB
Rust
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// Args:
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// mapdir: .:wasitests/test_fs/hamlet
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use std::fs;
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use std::io::{Read, Seek, SeekFrom};
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use std::path::PathBuf;
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fn main() {
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#[cfg(not(target_os = "wasi"))]
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let mut base = PathBuf::from("wasitests/test_fs/hamlet");
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#[cfg(target_os = "wasi")]
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let mut base = PathBuf::from(".");
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base.push("act1/scene3.txt");
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let mut file = fs::File::open(&base).expect("Could not open file");
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let mut buffer = [0u8; 32];
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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assert_eq!(file.seek(SeekFrom::Start(123)).unwrap(), 123);
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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assert_eq!(file.seek(SeekFrom::End(-123)).unwrap(), 6617);
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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assert_eq!(file.seek(SeekFrom::Current(-250)).unwrap(), 6399);
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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assert_eq!(file.seek(SeekFrom::Current(50)).unwrap(), 6481);
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assert_eq!(file.read(&mut buffer).unwrap(), 32);
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let str_val = std::str::from_utf8(&buffer[..]).unwrap();
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println!("{}", str_val);
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}
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