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-rw-r--r--examples/cat.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/examples/cat.rs b/examples/cat.rs
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+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");
+}