зеркало из https://github.com/mozilla/gecko-dev.git
24 строки
580 B
Rust
24 строки
580 B
Rust
extern crate memmap;
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use std::env;
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use std::io::{self, Write};
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use std::fs::File;
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use memmap::Mmap;
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/// Output a file's contents to stdout. The file path must be provided as the first process
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/// argument.
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fn main() {
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let path = env::args()
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.nth(1)
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.expect("supply a single path as the program argument");
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let file = File::open(path).expect("failed to open the file");
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let mmap = unsafe { Mmap::map(&file).expect("failed to map the file") };
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io::stdout()
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.write_all(&mmap[..])
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.expect("failed to output the file contents");
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}
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