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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/memmap2/examples/cat.rs
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/memmap2/examples/cat.rs')
-rw-r--r--third_party/rust/memmap2/examples/cat.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/third_party/rust/memmap2/examples/cat.rs b/third_party/rust/memmap2/examples/cat.rs
new file mode 100644
index 0000000000..34599af2e5
--- /dev/null
+++ b/third_party/rust/memmap2/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");
+}