6 releases (3 breaking)
0.4.0 | Aug 20, 2024 |
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0.3.3 | Aug 15, 2024 |
0.3.2 | Jul 11, 2024 |
0.2.0 | May 30, 2024 |
0.1.0 | May 27, 2024 |
#243 in Filesystem
6,286 downloads per month
Used in 25 crates
(4 directly)
19KB
292 lines
fast-glob
Introduce
A high-performance glob matching crate for Rust based on devongovett/glob-match
.
Key Features:
- Up to 60% performance improvement.
- Supports more complete and well-rounded features.
Examples
use fast_glob::glob_match;
let glob = "some/**/n*d[k-m]e?txt";
let path = "some/a/bigger/path/to/the/crazy/needle.txt";
assert!(glob_match(glob, path));
Syntax
Syntax | Meaning |
---|---|
? |
Matches any single character. |
* |
Matches zero or more characters, except for path separators (e.g. / ). |
** |
Matches zero or more characters, including path separators. Must match a complete path segment (i.e. followed by a / or the end of the pattern). |
[ab] |
Matches one of the characters contained in the brackets. Character ranges, e.g. [a-z] are also supported. Use [!ab] or [^ab] to match any character except those contained in the brackets. |
{a,b} |
Matches one of the patterns contained in the braces. Any of the wildcard characters can be used in the sub-patterns. Braces may be nested up to 10 levels deep. |
! |
When at the start of the glob, this negates the result. Multiple ! characters negate the glob multiple times. |
\ |
A backslash character may be used to escape any of the above special characters. |
Benchmark
Test Case 1
const GLOB: &'static str = "some/**/n*d[k-m]e?txt";
const PATH: &'static str = "some/a/bigger/path/to/the/crazy/needle.txt";
mine time: [83.742 ns 84.400 ns 85.132 ns]
glob time: [386.77 ns 396.19 ns 406.87 ns]
globset time: [21.010 µs 21.114 µs 21.225 µs]
glob_match time: [195.58 ns 196.80 ns 198.24 ns]
glob_pre_compiled time: [88.180 ns 90.274 ns 92.158 ns]
globset_pre_compiled time: [42.680 ns 42.778 ns 42.911 ns]
Test Case 2
const GLOB: &'static str = "some/**/{tob,crazy}/?*.{png,txt}";
const PATH: &'static str = "some/a/bigger/path/to/the/crazy/needle.txt";
mine time: [309.80 ns 311.56 ns 313.25 ns]
globset time: [31.456 µs 31.502 µs 31.559 µs]
glob_match time: [384.21 ns 384.71 ns 385.15 ns]
globset_pre_compiled time: [42.505 ns 42.526 ns 42.551 ns]
FAQ
Why not use the more efficient glob_match
for brace expansion?
glob_match
is unable to handle complex brace expansions. Below are some failed examples:
glob_match("{a/b,a/b/c}/c", "a/b/c")
glob_match("**/foo{bar,b*z}", "foobuzz")
glob_match("**/{a,b}/c.png", "some/a/b/c.png")
Due to these limitations, brace expansion
requires a different implementation that can handle the complexity of such patterns, resulting in some performance trade-offs.
Credits
- The glob-match project created by @devongovett which is an extremely fast glob matching library in Rust.