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Diffstat (limited to 'vendor/memmap2-0.2.3/examples')
-rw-r--r-- | vendor/memmap2-0.2.3/examples/cat.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/vendor/memmap2-0.2.3/examples/cat.rs b/vendor/memmap2-0.2.3/examples/cat.rs new file mode 100644 index 000000000..34599af2e --- /dev/null +++ b/vendor/memmap2-0.2.3/examples/cat.rs @@ -0,0 +1,23 @@ +extern crate memmap2; + +use std::env; +use std::fs::File; +use std::io::{self, Write}; + +use memmap2::Mmap; + +/// Output a file's contents to stdout. The file path must be provided as the first process +/// argument. +fn main() { + let path = env::args() + .nth(1) + .expect("supply a single path as the program argument"); + + let file = File::open(path).expect("failed to open the file"); + + let mmap = unsafe { Mmap::map(&file).expect("failed to map the file") }; + + io::stdout() + .write_all(&mmap[..]) + .expect("failed to output the file contents"); +} |