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Merge pull request #3661 from cakebaker/unescaped_backslash
paste: handle list ending with unescaped backslash
This commit is contained in:
commit
9f9847188d
2 changed files with 44 additions and 3 deletions
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@ -12,7 +12,7 @@ use std::fmt::Display;
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use std::fs::File;
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use std::io::{stdin, stdout, BufRead, BufReader, Read, Write};
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use std::path::Path;
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use uucore::error::{FromIo, UResult};
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use uucore::error::{FromIo, UResult, USimpleError};
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use uucore::{format_usage, help_about, help_usage};
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const ABOUT: &str = help_about!("paste.md");
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@ -129,6 +129,16 @@ fn paste(
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files.push(file);
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}
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if delimiters.ends_with('\\') && !delimiters.ends_with("\\\\") {
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return Err(USimpleError::new(
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1,
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format!(
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"delimiter list ends with an unescaped backslash: {}",
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delimiters
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),
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));
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}
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let delimiters: Vec<char> = unescape(delimiters).chars().collect();
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let mut delim_count = 0;
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let mut delim_length = 1;
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@ -222,10 +232,8 @@ fn paste(
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}
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// Unescape all special characters
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// TODO: this will need work to conform to GNU implementation
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fn unescape(s: &str) -> String {
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s.replace("\\n", "\n")
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.replace("\\t", "\t")
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.replace("\\\\", "\\")
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.replace('\\', "")
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}
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@ -156,6 +156,39 @@ fn test_multi_stdin() {
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}
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}
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#[test]
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// TODO: make this test work on Windows
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#[cfg(not(windows))]
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fn test_delimiter_list_ending_with_escaped_backslash() {
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for d in ["-d", "--delimiters"] {
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let (at, mut ucmd) = at_and_ucmd!();
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let mut ins = vec![];
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for (i, _in) in ["a\n", "b\n"].iter().enumerate() {
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let file = format!("in{}", i);
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at.write(&file, _in);
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ins.push(file);
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}
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ucmd.args(&[d, "\\\\"])
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.args(&ins)
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.succeeds()
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.stdout_is("a\\b\n");
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}
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}
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#[test]
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fn test_delimiter_list_ending_with_unescaped_backslash() {
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for d in ["-d", "--delimiters"] {
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new_ucmd!()
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.args(&[d, "\\"])
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.fails()
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.stderr_contains("delimiter list ends with an unescaped backslash: \\");
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new_ucmd!()
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.args(&[d, "_\\"])
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.fails()
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.stderr_contains("delimiter list ends with an unescaped backslash: _\\");
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}
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}
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#[test]
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fn test_data() {
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for example in EXAMPLE_DATA {
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