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https://github.com/RGBCube/uutils-coreutils
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tail: add fixes to pass "gnu/tests/tail-2/tail-c.sh" from GNU's test suite
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parent
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commit
cd0d23752a
2 changed files with 38 additions and 2 deletions
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@ -22,7 +22,7 @@ use chunks::ReverseChunks;
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use clap::{App, Arg};
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use std::collections::VecDeque;
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use std::fmt;
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use std::fs::File;
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use std::fs::{File, Metadata};
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use std::io::{stdin, stdout, BufRead, BufReader, Read, Seek, SeekFrom, Write};
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use std::path::Path;
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use std::thread::sleep;
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@ -32,6 +32,8 @@ use uucore::ringbuffer::RingBuffer;
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#[cfg(unix)]
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use crate::platform::stdin_is_pipe_or_fifo;
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#[cfg(unix)]
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use std::os::unix::fs::MetadataExt;
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pub mod options {
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pub mod verbosity {
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@ -189,7 +191,8 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
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continue;
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}
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let mut file = File::open(&path).unwrap();
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if is_seekable(&mut file) {
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let md = file.metadata().unwrap();
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if is_seekable(&mut file) && get_block_size(&md) > 0 {
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bounded_tail(&mut file, &settings);
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if settings.follow {
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let reader = BufReader::new(file);
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@ -437,6 +440,8 @@ fn unbounded_tail<T: Read>(reader: &mut BufReader<T>, settings: &Settings) {
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fn is_seekable<T: Seek>(file: &mut T) -> bool {
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file.seek(SeekFrom::Current(0)).is_ok()
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&& file.seek(SeekFrom::End(0)).is_ok()
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&& file.seek(SeekFrom::Start(0)).is_ok()
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}
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#[inline]
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@ -464,3 +469,14 @@ fn parse_num(src: &str) -> Result<(usize, bool), ParseSizeError> {
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parse_size(size_string).map(|n| (n, starting_with))
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}
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fn get_block_size(md: &Metadata) -> u64 {
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#[cfg(unix)]
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{
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md.blocks()
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}
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#[cfg(not(unix))]
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{
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md.len()
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}
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}
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@ -425,3 +425,23 @@ fn test_tail_num_with_undocumented_sign_bytes() {
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.succeeds()
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.stdout_is("efghijklmnopqrstuvwxyz");
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}
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#[test]
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#[cfg(unix)]
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fn test_tail_bytes_for_funny_files() {
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// gnu/tests/tail-2/tail-c.sh
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let ts = TestScenario::new(util_name!());
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let at = &ts.fixtures;
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for &file in &["/proc/version", "/sys/kernel/profiling"] {
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if !at.file_exists(file) {
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continue;
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}
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let args = ["--bytes", "1", file];
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let result = ts.ucmd().args(&args).run();
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let exp_result = unwrap_or_return!(expected_result(&ts, &args));
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result
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.stdout_is(exp_result.stdout_str())
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.stderr_is(exp_result.stderr_str())
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.code_is(exp_result.code());
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}
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}
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