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globset: fix repeated use of **

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This fixes a bug where repeated use of ** didn't behave as it should. In
particular, each use of `**` added a new requirement directory depth
requirement. For example, something like `**/**/b` would match
`foo/bar/b`, but it wouldn't match `foo/b` even though it should. In
particular, `**` semantics demand "infinite" depth, so repeated uses of
`**` should just coalesce as if only one was given.

We do this coalescing in the parser. It's a little tricky because we
treat `**/a`, `a/**` and `a/**/b` as distinct tokens with their own
regex conversions. We also test the crap out of it.

Fixes #1174
This commit is contained in:
Andrew Gallant 2019-01-23 19:15:02 -05:00
parent 7048a06c31
commit aeaa5fc1b1
No known key found for this signature in database
GPG Key ID: B2E3A4923F8B0D44
3 changed files with 55 additions and 13 deletions
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46
globset/src/glob.rs
View File

@ -850,27 +850,44 @@ impl<'a> Parser<'a> {
}
return Ok(());
}
self.pop_token()?;
if !prev.map(is_separator).unwrap_or(false) {
if self.stack.len() <= 1
|| (prev != Some(',') && prev != Some('{')) {
return Err(self.error(ErrorKind::InvalidRecursive));
}
}
let is_suffix =
match self.chars.peek() {
None => {
assert!(self.bump().is_none());
self.push_token(Token::RecursiveSuffix)
true
}
Some(&',') | Some(&'}') if self.stack.len() >= 2 => {
self.push_token(Token::RecursiveSuffix)
true
}
Some(&c) if is_separator(c) => {
assert!(self.bump().map(is_separator).unwrap_or(false));
self.push_token(Token::RecursiveZeroOrMore)
false
}
_ => Err(self.error(ErrorKind::InvalidRecursive)),
_ => return Err(self.error(ErrorKind::InvalidRecursive)),
};
match self.pop_token()? {
Token::RecursivePrefix => {
self.push_token(Token::RecursivePrefix)?;
}
Token::RecursiveSuffix => {
self.push_token(Token::RecursiveSuffix)?;
}
_ => {
if is_suffix {
self.push_token(Token::RecursiveSuffix)?;
} else {
self.push_token(Token::RecursiveZeroOrMore)?;
}
}
}
Ok(())
}
fn parse_class(&mut self) -> Result<(), Error> {
@ -1194,8 +1211,23 @@ mod tests {
toregex!(re8, "[*]", r"^[\*]$");
toregex!(re9, "[+]", r"^[\+]$");
toregex!(re10, "+", r"^\+$");
toregex!(re11, "**", r"^.*$");
toregex!(re12, "☃", r"^\xe2\x98\x83$");
toregex!(re11, "☃", r"^\xe2\x98\x83$");
toregex!(re12, "**", r"^.*$");
toregex!(re13, "**/", r"^.*$");
toregex!(re14, "**/*", r"^(?:/?|.*/).*$");
toregex!(re15, "**/**", r"^.*$");
toregex!(re16, "**/**/*", r"^(?:/?|.*/).*$");
toregex!(re17, "**/**/**", r"^.*$");
toregex!(re18, "**/**/**/*", r"^(?:/?|.*/).*$");
toregex!(re19, "a/**", r"^a(?:/?|/.*)$");
toregex!(re20, "a/**/**", r"^a(?:/?|/.*)$");
toregex!(re21, "a/**/**/**", r"^a(?:/?|/.*)$");
toregex!(re22, "a/**/b", r"^a(?:/|/.*/)b$");
toregex!(re23, "a/**/**/b", r"^a(?:/|/.*/)b$");
toregex!(re24, "a/**/**/**/b", r"^a(?:/|/.*/)b$");
toregex!(re25, "**/b", r"^(?:/?|.*/)b$");
toregex!(re26, "**/**/b", r"^(?:/?|.*/)b$");
toregex!(re27, "**/**/**/b", r"^(?:/?|.*/)b$");
matches!(match1, "a", "a");
matches!(match2, "a*b", "a_b");

1
ignore/src/gitignore.rs
View File

@ -710,6 +710,7 @@ mod tests {
ignored!(ig41, ROOT, "\\a", "a");
ignored!(ig42, ROOT, "s*.rs", "sfoo.rs");
ignored!(ig43, ROOT, "**", "foo.rs");
ignored!(ig44, ROOT, "**/**/*", "a/foo.rs");
not_ignored!(ignot1, ROOT, "amonths", "months");
not_ignored!(ignot2, ROOT, "monthsa", "months");

9
tests/regression.rs
View File

@ -604,3 +604,12 @@ rgtest!(r1173, |dir: Dir, mut cmd: TestCommand| {
dir.create("foo", "test");
cmd.arg("test").assert_err();
});
// See: https://github.com/BurntSushi/ripgrep/issues/1174
rgtest!(r1174, |dir: Dir, mut cmd: TestCommand| {
dir.create_dir(".git");
dir.create(".gitignore", "**/**/*");
dir.create_dir("a");
dir.create("a/foo", "test");
cmd.arg("test").assert_err();
});